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lazarus/lcl/interfaces/gtk/gtkwidgetset.inc
Bad Sector f5718e9f06 LCL-GTK1: Fix various startup warnings and Gtk1 assertions 
This fixes a bunch of warnings when Gtk1 applications start.  The fixes
are on keyboard initialization (make a previously statically sized array
dynamic as the old value wasn't long enough and disable an unnecessary
warning about filling the VK table as the user can't do anything about
it - nor we unless the whole thing is redesigned), module loading (this
is a side effect of an environment variable collision between Gtk1, Gtk2
and Gtk3 - all of these use the GTK_MODULES variable to load some
modules but since as of 2023 no distribution aside from Slackware comes
with Gtk1, all of these warnings are bogus, so this patch temporarily
cleans the environment variable before initializing Gtk and restores it
later so that child processes can still access it) and passing NULL
styles to gtk_style_copy (the previous code assumed the style retrieval
functions always return a valid object, which is not the case).
2023-11-30 23:13:16 +00:00

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{%MainUnit gtkint.pp}
{******************************************************************************
TGtkWidgetSet
******************************************************************************
*****************************************************************************
This file is part of the Lazarus Component Library (LCL)
See the file COPYING.modifiedLGPL.txt, included in this distribution,
for details about the license.
*****************************************************************************
}
{$IFOPT C-}
// Uncomment for local trace
// {$C+}
// {$DEFINE ASSERT_IS_ON}
{$ENDIF}
{off $define GtkFixedWithWindow}
{------------------------------------------------------------------------------
Procedure: GLogFunc
Replaces the default glib loghandler. All errors, warnings etc, are logged
through this function.
Here are Fatals, Criticals and Errors translated to Exceptions
Comment Ex to skip exception, comment Level to skip logging
------------------------------------------------------------------------------}
procedure GLogFunc(ALogDomain: Pgchar; ALogLevel: TGLogLevelFlags;
AMessage: Pgchar; AData: gpointer);cdecl;
var
Flag, Level, Domain: String;
Ex: ExceptClass;
begin
(*
G_LOG_FLAG_RECURSION = 1 shl 0;
G_LOG_FLAG_FATAL = 1 shl 1;
G_LOG_LEVEL_ERROR = 1 shl 2;
G_LOG_LEVEL_CRITICAL = 1 shl 3;
G_LOG_LEVEL_WARNING = 1 shl 4;
G_LOG_LEVEL_MESSAGE = 1 shl 5;
G_LOG_LEVEL_INFO = 1 shl 6;
G_LOG_LEVEL_DEBUG = 1 shl 7;
G_LOG_LEVEL_MASK = (1 shl 8) - 2;
*)
if (AData=nil) then ;
Ex := nil;
Level := '';
Flag := '';
if ALogDomain = nil
then Domain := ''
else Domain := ALogDomain + ': ';
if ALogLevel and G_LOG_FLAG_RECURSION <> 0
then Flag := '[RECURSION] ';
if ALogLevel and G_LOG_FLAG_FATAL <> 0
then Flag := Flag + '[FATAL] ';
if ALogLevel and G_LOG_LEVEL_ERROR <> 0
then begin
Level := 'ERROR';
Ex := EInterfaceError;
end
else
if ALogLevel and G_LOG_LEVEL_CRITICAL <> 0
then begin
Level := 'CRITICAL';
Ex := EInterfaceCritical;
end
else
if ALogLevel and G_LOG_LEVEL_WARNING <> 0
then begin
Level := 'WARNING';
Ex := EInterfaceWarning;
end
else
if ALogLevel and G_LOG_LEVEL_INFO <> 0
then begin
Level := 'INFO';
end
else
if ALogLevel and G_LOG_LEVEL_DEBUG <> 0
then begin
Level := 'DEBUG';
end
else begin
Level := 'USER';
end;
if Ex = nil
then begin
if Level <> ''
then DebugLn('[', Level, '] ', Flag, Domain, AMessage);
end
else begin
if ALogLevel and G_LOG_FLAG_FATAL <> 0
then begin
// always create exception
//
// see callstack for more info
raise Ex.Create(Flag + Domain + AMessage);
end
else begin
// create a debugger trappable exception
// but for now let the app continue and log a line
// in future when all warnings etc. are gone they might raise
// a real exception
//
// see callstack for more info
try
raise Ex.Create(Flag + Domain + AMessage);
except
on Exception do begin
// just write a line
DebugLn('[', Level, '] ', Flag, Domain, AMessage);
end;
end;
end;
end;
end;
{$ifdef Unix}
// TThread.Synchronize support
var
threadsync_pipein, threadsync_pipeout: cint;
threadsync_giochannel: pgiochannel;
childsig_pending: boolean;
procedure ChildEventHandler(sig: longint; siginfo: psiginfo;
sigcontext: psigcontext); cdecl;
begin
childsig_pending := true;
WakeMainThread(nil);
end;
procedure InstallSignalHandler;
var
child_action: sigactionrec;
begin
child_action.sa_handler := @ChildEventHandler;
fpsigemptyset(child_action.sa_mask);
child_action.sa_flags := 0;
fpsigaction(SIGCHLD, @child_action, nil);
end;
{$ifdef ClearGtkModulesEnvVar}
function setenv(envname, envvar: PAnsiChar; overwrite: cint): cint; cdecl; external 'c' name 'setenv';
{$endif}
{$endif}
{------------------------------------------------------------------------------
Method: TGtkWidgetSet.Create
Params: None
Returns: Nothing
Constructor for the class.
------------------------------------------------------------------------------}
constructor TGtkWidgetSet.Create;
{$IFDEF EnabledGtkThreading}
{$IFNDEF Win32}
var
TM: TThreadManager;
{$ENDIF}
{$ENDIF}
{$ifdef ClearGtkModulesEnvVar}
var
OldGtkModulesValue: AnsiString;
{$endif}
begin
if ClassType = TGtkWidgetSet
then raise EInvalidOperation.Create('Cannot create the base gtkwidgetset, use gtk1 or gtk2 instead');
inherited Create;
FAppActive := False;
FLastFocusIn := nil;
FLastFocusOut := nil;
LastWFPMousePos := Point(MaxInt, MaxInt);
{$IFDEF EnabledGtkThreading}
{$IFNDEF Win32}
if GetThreadManager(TM) and Assigned(TM.InitManager) and g_thread_supported then
begin
g_thread_init(nil);
gdk_threads_init;
gdk_threads_enter;
fMultiThreadingEnabled := True;
end;
{$ELSE}
g_thread_init(nil);
{$ENDIF}
{$ENDIF}
// DCs, GDIObjects
FDeviceContexts := TDynHashArray.Create(-1);
FDeviceContexts.Options:=FDeviceContexts.Options+[dhaoCacheContains];
FGDIObjects := TDynHashArray.Create(-1);
FGDIObjects.Options:=FGDIObjects.Options+[dhaoCacheContains];
GtkDef.ReleaseGDIObject:=@ReleaseGDIObject;
GtkDef.ReferenceGDIObject:=@ReferenceGDIObject;
{$Ifdef GTK2}
FDefaultFontDesc:= nil;
{$Else}
FDefaultFont:= nil;
{$EndIf}
// messages
FMessageQueue := TGtkMessageQueue.Create;
WaitingForMessages := false;
FWidgetsWithResizeRequest := TDynHashArray.Create(-1);
FWidgetsWithResizeRequest.Options:=
FWidgetsWithResizeRequest.Options+[dhaoCacheContains];
FWidgetsResized := TDynHashArray.Create(-1);
FWidgetsResized.Options:=FWidgetsResized.Options+[dhaoCacheContains];
FFixWidgetsResized := TDynHashArray.Create(-1);
FTimerData := TFPList.Create;
{$IFDEF Use_KeyStateList}
FKeyStateList_ := TFPList.Create;
{$ENDIF}
DestroyConnectedWidgetCB:=@DestroyConnectedWidget;
FRCFilename := ChangeFileExt(ParamStrUTF8(0),'.gtkrc');
FRCFileParsed := false;
// initialize app level gtk engine
gtk_set_locale ();
// clear the GTK_MODULES environment variable if needed
{$ifdef ClearGtkModulesEnvVar}
OldGtkModulesValue:=GetEnvironmentVariable('GTK_MODULES');
setenv('GTK_MODULES', '', 1);
{$endif}
// call init and pass cmd line args
PassCmdLineOptions;
// restore the GTK_MODULES environment variable
{$ifdef ClearGtkModulesEnvVar}
setenv('GTK_MODULES', PAnsiChar(OldGtkModulesValue), 1);
{$endif}
// set glib log handler
FLogHandlerID := g_log_set_handler(nil, -1, @GLogFunc, Self);
// read gtk rc file
ParseRCFile;
// Initialize Stringlist for holding styles
Styles := TStringlist.Create;
{$IFDEF Use_KeyStateList}
gtk_key_snooper_install(@GTKKeySnooper, FKeyStateList_);
{$ELSE}
gtk_key_snooper_install(@GTKKeySnooper, nil);
{$ENDIF}
// Init tooltips
FGTKToolTips := gtk_tooltips_new;
//gtk_object_ref(PGTKObject(FGTKToolTips));
gtk_toolTips_Enable(FGTKToolTips);
// Init stock objects;
InitStockItems;
InitSystemColors;
InitSystemBrushes;
// clipboard
ClipboardTypeAtoms[ctPrimarySelection]:=GDK_SELECTION_PRIMARY;
ClipboardTypeAtoms[ctSecondarySelection]:=GDK_SELECTION_SECONDARY;
ClipboardTypeAtoms[ctClipboard]:=gdk_atom_intern('CLIPBOARD',GdkFalse);
{$ifdef Unix}
InitSynchronizeSupport;
{$ifdef UseAsyncProcess}
DebugLn(['TGtkWidgetSet.Create Installing signal handler for TAsyncProcess']);
InstallSignalHandler;
{$endif}
{$endif}
GTKWidgetSet := Self;
end;
{------------------------------------------------------------------------------
Method: TGtkWidgetSet.PassCmdLineOptions
Params: None
Returns: Nothing
Passes command line options to the gtk engine
------------------------------------------------------------------------------}
procedure TGtkWidgetSet.PassCmdLineOptions;
function SearchOption(const Option: string; Remove: boolean): boolean;
var
i: Integer;
ArgCount: LongInt;
begin
Result:=false;
if Option='' then exit;
i:=0;
ArgCount:=argc;
while i<ArgCount do begin
if AnsiStrComp(PChar(Option),argv[i])=0 then begin
// option exists
Result:=true;
if Remove then begin
// remove option from parameters, so that no other parameter parsed
// can see it.
dec(ArgCount);
while i<ArgCount do begin
argv[i]:=argv[i+1];
inc(i);
end;
argv[i]:=nil;
end;
exit;
end;
inc(i);
end;
end;
begin
gtk_init(@argc,@argv);
UseTransientForModalWindows:=not SearchOption('--lcl-no-transient',true);
end;
{------------------------------------------------------------------------------
procedure TGtkWidgetSet.FreeAllStyles;
------------------------------------------------------------------------------}
procedure TGtkWidgetSet.FreeAllStyles;
begin
If Assigned(Styles) then begin
ReleaseAllStyles;
Styles.Free;
Styles:=nil;
end;
end;
{$ifdef TraceGdiCalls}
procedure DumpBackTrace(BackTrace: TCallBacksArray);
var
func,source: shortString;
line: longint;
i: integer;
begin
for i:=0 to MaxCallBacks do begin
LineInfo.GetLineInfo(longWord(BackTrace[i]), Func, source, line);
DebugLn('$', Hexstr(LongInt(BackTrace[i]),8),' ', Func, ', line ',
dbgs(line),' of ',Source);
end;
end;
procedure FillStackAddrs(bp: pointer; BackTraces: PCallBacksArray);
var
prevbp: pointer;
caller_frame,
caller_addr : Pointer;
i: Integer;
begin
Prevbp := bp-1;
i:=0;
while (bp>prevbp)do begin
caller_addr := get_caller_addr(bp);
caller_frame := get_caller_frame(bp);
BackTraces^[i] := Caller_Addr;
inc(i);
if (caller_addr=nil) or
(caller_frame=nil) or
(i>MaxCallBacks) then
break;
prevbp:=bp;
bp:=caller_frame;
end;
end;
{$endif}
{------------------------------------------------------------------------------
Method: TGtkWidgetSet.Destroy
Params: None
Returns: Nothing
Destructor for the class.
------------------------------------------------------------------------------}
destructor TGtkWidgetSet.Destroy;
const
ProcName = '[TGtkWidgetSet.Destroy]';
var
n: Integer;
pTimerInfo : PGtkITimerinfo;
GDITypeCount: array[TGDIType] of Integer;
GDIType: TGDIType;
HashItem: PDynHashArrayItem;
QueueItem : TGtkMessageQueueItem;
NextQueueItem : TGtkMessageQueueItem;
begin
if FDockImage <> nil then
gtk_widget_destroy(FDockImage);
ReAllocMem(FExtUTF8OutCache,0);
FExtUTF8OutCacheSize:=0;
FreeAllStyles;
FreeStockItems;
FreeSystemBrushes;
if FGTKToolTips<>nil then begin
{$IFDEF Gtk2}
gtk_object_sink(PGTKObject(FGTKToolTips));
{$ELSE}
gtk_object_unref(PGTKObject(FGTKToolTips));
{$ENDIF}
FGTKToolTips := nil;
end;
// tidy up the paint messages
FMessageQueue.Lock;
try
QueueItem:=FMessageQueue.FirstMessageItem;
while (QueueItem<>nil) do begin
NextQueueItem := TGtkMessageQueueItem(QueueItem.Next);
if QueueItem.IsPaintMessage then
fMessageQueue.RemoveMessage(QueueItem,FPMF_All,true);
QueueItem := NextQueueItem;
end;
// warn about unremoved paint messages
if fMessageQueue.HasPaintMessages then begin
DebugLn(ProcName, Format(rsWarningUnremovedPaintMessages,
[IntToStr(fMessageQueue.NumberOfPaintMessages)]));
end;
finally
FMessageQueue.UnLock;
end;
// warn about unreleased DC
if (FDeviceContexts.Count > 0)
then begin
DebugLn(ProcName, Format(rsWarningUnreleasedDCsDump,
[FDeviceContexts.Count]));
n:=0;
DbgOut(ProcName,' DCs: ');
HashItem:=FDeviceContexts.FirstHashItem;
while (n<7) and (HashItem<>nil) do
begin
DbgOut(' ',DbgS(HashItem^.Item));
HashItem:=HashItem^.Next;
inc(n);
end;
DebugLn();
end;
// warn about unreleased gdi objects
if (FGDIObjects.Count > 0)
then begin
DebugLn(ProcName,Format(rsWarningUnreleasedGDIObjectsDump,
[FGDIObjects.Count]));
for GDIType := Low(TGDIType) to High(TGDIType) do
GDITypeCount[GDIType] := 0;
n:=0;
{$ifndef TraceGdiCalls}
DbgOut(ProcName,' GDIOs:');
{$endif}
HashItem := FGDIObjects.FirstHashItem;
while (HashItem <> nil) do
begin
{$ifndef TraceGdiCalls}
if n < 7
then
DbgOut(' ',DbgS(HashItem^.Item));
{$endif}
Inc(GDITypeCount[PGdiObject(HashItem^.Item)^.GDIType]);
HashItem := HashItem^.Next;
Inc(n);
end;
{$ifndef TraceGdiCalls}
DebugLn();
{$endif}
for GDIType := Low(GDIType) to High(GDIType) do
if GDITypeCount[GDIType] > 0 then
DebugLn(ProcName,Format(' %s: %d', [dbgs(GDIType), GDITypeCount[GDIType]]));
// tidy up messages
if FMessageQueue.Count > 0 then begin
DebugLn(ProcName, Format(rsWarningUnreleasedMessagesInQueue,[FMessageQueue.Count]));
while FMessageQueue.First<>nil do
fMessageQueue.RemoveMessage(fMessageQueue.FirstMessageItem,FPMF_All,true);
end;
end;
// warn about unreleased timers
n := FTimerData.Count;
if (n > 0) then
begin
DebugLn(ProcName,Format(rsWarningUnreleasedTimerInfos,[n]));
while (n > 0) do
begin
dec (n);
pTimerInfo := PGtkITimerinfo (FTimerData.Items[n]);
Dispose (pTimerInfo);
FTimerData.Delete (n);
end;
end;
{$ifdef TraceGdiCalls}
if FDeviceContexts.Count>0 then begin
//DebugLn('BackTrace for unreleased device contexts follows:');
n:=0;
HashItem:=FDeviceContexts.FirstHashItem;
while (HashItem<>nil) and (n<MaxTraces) do
begin
DebugLn('DC: ', Dbgs(HashItem^.Item));
DumpBackTrace(TGtkDeviceContext(HashItem^.Item).StackAddrs);
DebugLn();
HashItem:=HashItem^.Next;
end;
if (n>=MaxTraces) then begin
DebugLn('... Truncated dump DeviceContext leakage dump.');
DebugLn();
end;
end;
if (FGDIObjects.Count > 0)
then begin
//DebugLn('BackTrace for unreleased gdi objects follows:');
for GDIType := Low(TGDIType) to High(TGDIType) do begin
if GDITypeCount[GDIType]<>0 then begin
n:=0;
HashItem := FGDIObjects.FirstHashItem;
while (HashItem <> nil) and (n<MaxTraces) do begin
DebugLn(dbgs(gdiType),': ', dbgs(HashItem^.Item));
DumpBackTrace(PgdiObject(HashItem^.Item)^.StackAddrs);
DebugLn();
HashItem := HashItem^.Next;
inc(n);
end;
if (n>=MaxTraces) then begin
DebugLn('... Truncated ',dbgs(GDIType),' leakage dump.');
DebugLn();
end;
end;
end;
end;
{$endif}
FreeAndNil(FWidgetsWithResizeRequest);
FreeAndNil(FWidgetsResized);
FreeAndNil(FFixWidgetsResized);
FreeAndNil(FMessageQueue);
FreeAndNil(FDeviceContexts);
FreeAndNil(FGDIObjects);
{$IFDEF Use_KeyStateList}
FreeAndNil(FKeyStateList_);
{$ENDIF}
FreeAndNil(FTimerData);
GtkDefDone;
FreeAndNil(FDCManager);
// finally remove our loghandler
g_log_remove_handler(nil, FLogHandlerID);
GTKWidgetSet := nil;
WakeMainThread := nil;
{$IFDEF EnabledGtkThreading}
if MultiThreadingEnabled then
begin
{$IFNDEF Win32}
gdk_threads_leave;
{$ENDIF}
fMultiThreadingEnabled := False;
end;
{$ENDIF}
inherited Destroy;
end;
{$ifdef Unix}
procedure TGtkWidgetSet.PrepareSynchronize(AObject: TObject);
{ This method is the WakeMainThread of the unit classes.
It is called in TThread.Synchronize to wake up the main thread = LCL GUI thread.
see: TGtkWidgetSet.InitSynchronizeSupport
}
var
thrash: char;
begin
// wake up GUI thread by sending a byte through the threadsync pipe
thrash:='l';
fpwrite(threadsync_pipeout, thrash, 1);
end;
procedure TGtkWidgetSet.ProcessChildSignal;
var
pid: tpid;
reason: TChildExitReason;
status: integer;
info: dword;
handler: PChildSignalEventHandler;
begin
repeat
pid := fpwaitpid(-1, status, WNOHANG);
if pid <= 0 then break;
if wifexited(status) then
begin
reason := cerExit;
info := wexitstatus(status);
end else
if wifsignaled(status) then
begin
reason := cerSignal;
info := wtermsig(status);
end else
continue;
handler := FChildSignalHandlers;
while handler <> nil do
begin
if handler^.pid = pid then
begin
handler^.OnEvent(handler^.UserData, reason, info);
break;
end;
handler := handler^.NextHandler;
end;
until false;
end;
function threadsync_iocallback(source: PGIOChannel; condition: TGIOCondition;
data: gpointer): gboolean; cdecl;
var
thrashspace: array[1..1024] of byte;
begin
// read the sent bytes
fpread(threadsync_pipein, thrashspace[1], 1);
Result := true;
// one of children signaled ?
if childsig_pending then
begin
childsig_pending := false;
TGtkWidgetSet(data).ProcessChildSignal;
end;
// execute the to-be synchronized method
if IsMultiThread then
CheckSynchronize;
end;
procedure TGtkWidgetSet.InitSynchronizeSupport;
{ When a thread calls its Synchronize, it calls
WakeMainThread (defined in the unit classes).
Set
}
begin
{ TThread.Synchronize ``glue'' }
WakeMainThread := @PrepareSynchronize;
assignpipe(threadsync_pipein, threadsync_pipeout);
threadsync_giochannel := g_io_channel_unix_new(threadsync_pipein);
g_io_add_watch(threadsync_giochannel, G_IO_IN, @threadsync_iocallback, Self);
end;
{$else}
{$message warn TThread.Synchronize will not work on Gtk/Win32 }
procedure InitSynchronizeSupport;
begin
end;
{$endif}
{------------------------------------------------------------------------------
procedure TGtkWidgetSet.UpdateTransientWindows;
------------------------------------------------------------------------------}
procedure TGtkWidgetSet.UpdateTransientWindows;
type
PTransientWindow = ^TTransientWindow;
TTransientWindow = record
GtkWindow: PGtkWindow;
Component: TComponent;
IsModal: boolean;
SortIndex: integer;
TransientParent: PGtkWindow;
end;
var
AllWindows: TFPList;
List: PGList;
Window: PGTKWindow;
ATransientWindow: PTransientWindow;
LCLObject: TObject;
LCLComponent: TComponent;
i: Integer;
FirstModal: Integer;
j: Integer;
ATransientWindow1: PTransientWindow;
ATransientWindow2: PTransientWindow;
ParentTransientWindow: PTransientWindow;
OldTransientParent: PGtkWindow;
begin
if (not UseTransientForModalWindows) then exit;
if UpdatingTransientWindows then begin
DebugLn('TGtkWidgetSet.UpdateTransientWindows already updating');
exit;
end;
UpdatingTransientWindows:=true;
try
{$IFDEF VerboseTransient}
DebugLn('TGtkWidgetSet.UpdateTransientWindows');
{$ENDIF}
AllWindows:=nil;
// find all currently visible gtkwindows
List := gdk_window_get_toplevels;
while List <> nil do
begin
if (List^.Data <> nil)
then begin
gdk_window_get_user_data(PGDKWindow(List^.Data), Pgpointer(@Window));
if GtkWidgetIsA(PGtkWidget(Window), GTK_TYPE_WINDOW)
and gtk_widget_visible(PGtkWidget(Window))
then begin
// visible window found -> add to list
New(ATransientWindow);
FillChar(ATransientWindow^,SizeOf(TTransientWindow),0);
ATransientWindow^.GtkWindow:=Window;
LCLObject:=GetLCLObject(Window);
if (LCLObject<>nil) and (LCLObject is TComponent) then begin
LCLComponent:=TComponent(LCLObject);
ATransientWindow^.Component:=LCLComponent;
end;
if (ModalWindows<>nil) then
ATransientWindow^.SortIndex:=ModalWindows.IndexOf(Window)
else
ATransientWindow^.SortIndex:=-1;
ATransientWindow^.IsModal:=(ATransientWindow^.SortIndex>=0)
and (GTK_WIDGET_VISIBLE(PGtkWidget(Window)));
if not ATransientWindow^.IsModal then begin
if (LCLObject is TCustomForm)
and (TCustomForm(LCLObject).Parent=nil) then
ATransientWindow^.SortIndex:=
Screen.CustomFormZIndex(TCustomForm(LCLObject));
end;
if ATransientWindow^.SortIndex<0 then begin
// this window has no form. Move it to the back.
ATransientWindow^.SortIndex:=Screen.CustomFormCount;
end;
//DebugLn(['TGtkWidgetSet.UpdateTransientWindows LCLObject=',DbgSName(LCLObject),' ATransientWindow^.SortIndex=',ATransientWindow^.SortIndex]);
if AllWindows=nil then AllWindows:=TFPList.Create;
AllWindows.Add(ATransientWindow);
end;
end;
list := g_list_next(list);
end;
if AllWindows=nil then exit;
//for i:=0 to SCreen.CustomFormZOrderCount-1 do
// DebugLn(['TGtkWidgetSet.UpdateTransientWindows i=',i,'/',SCreen.CustomFormZOrderCount,' ',DbgSName(SCreen.CustomFormsZOrdered[i])]);
// sort
// move all modal windows to the end of the window list
i:=AllWindows.Count-1;
FirstModal:=AllWindows.Count;
while i>=0 do begin
ATransientWindow:=PTransientWindow(AllWindows[i]);
if ATransientWindow^.IsModal
and (i<FirstModal) then begin
dec(FirstModal);
if i<FirstModal then
AllWindows.Exchange(i,FirstModal);
end;
dec(i);
end;
if FirstModal=AllWindows.Count then begin
// there is no modal window
// -> break all transient window relation ships
for i:=AllWindows.Count-1 downto 0 do begin
ATransientWindow:=PTransientWindow(AllWindows[i]);
{$IFDEF VerboseTransient}
DbgOut('TGtkWidgetSet.UpdateTransientWindows Untransient ',i);
if ATransientWindow^.Component<>nil then
DbgOut(' ',ATransientWindow^.Component.Name,':',ATransientWindow^.Component.ClassName);
DebugLn('');
{$ENDIF}
gtk_window_set_transient_for(ATransientWindow^.GtkWindow,nil);
end;
end else begin
// there are modal windows
// -> sort windows in z order and setup transient relationships
//DebugLn(['TGtkWidgetSet.UpdateTransientWindows ModalWindows=',AllWindows.Count-FirstModal,' NonModalWindows=',FirstModal]);
// sort modal windows (bubble sort)
for i:=FirstModal to AllWindows.Count-2 do begin
for j:=i+1 to AllWindows.Count-1 do begin
ATransientWindow1:=PTransientWindow(AllWindows[i]);
ATransientWindow2:=PTransientWindow(AllWindows[j]);
if ATransientWindow1^.SortIndex>ATransientWindow2^.SortIndex then
AllWindows.Exchange(i,j);
end;
end;
// sort non modal windows for z order
// ToDo: How do we get the z order?
// For now, just use the inverse order in the Screen object
// that means: the lower in the Screen object, the later in the transient list
for i:=0 to FirstModal-2 do begin
for j:=i+1 to FirstModal-1 do begin
ATransientWindow1:=PTransientWindow(AllWindows[i]);
ATransientWindow2:=PTransientWindow(AllWindows[j]);
if ATransientWindow1^.SortIndex<ATransientWindow2^.SortIndex then
AllWindows.Exchange(i,j);
end;
end;
// set all transient relationships for LCL windows
ParentTransientWindow:=nil;
for i:=0 to AllWindows.Count-1 do begin
ATransientWindow:=PTransientWindow(AllWindows[i]);
if (ATransientWindow^.Component<>nil)
and GTK_WIDGET_VISIBLE(PgtkWidget(ATransientWindow^.GtkWindow)) then
begin
if ParentTransientWindow<>nil then begin
{$IFDEF VerboseTransient}
DebugLn('Define TRANSIENT ',
' Parent=',
ParentTransientWindow^.Component.Name,':',
ParentTransientWindow^.Component.ClassName,
' Index=',ParentTransientWindow^.SortIndex,
' Wnd=',DbgS(ParentTransientWindow^.GtkWindow),
' Child=',ATransientWindow^.Component.Name,':',
ATransientWindow^.Component.ClassName,
' Index=',ATransientWindow^.SortIndex,
' Wnd=',DbgS(ATransientWindow^.GtkWindow),
'');
{$ENDIF}
ATransientWindow^.TransientParent:=ParentTransientWindow^.GtkWindow;
end;
ParentTransientWindow:=ATransientWindow;
end;
end;
// Each transient relationship can reorder the visible forms
// To reduce flickering and creation of temporary circles
// do the setup in two separate steps:
// break unneeded transient relationships
for i:=AllWindows.Count-1 downto 0 do begin
ATransientWindow:=PTransientWindow(AllWindows[i]);
OldTransientParent:=ATransientWindow^.GtkWindow^.transient_parent;
if (OldTransientParent<>ATransientWindow^.TransientParent) then begin
{$IFDEF VerboseTransient}
DebugLn('Break old TRANSIENT i=',i,'/',AllWindows.Count,
' OldTransientParent=',DbgS(OldTransientParent),
' Child=',ATransientWindow^.Component.Name,':',
ATransientWindow^.Component.ClassName,
' Index=',ATransientWindow^.SortIndex,
' Wnd=',DbgS(ATransientWindow^.GtkWindow),
'');
{$ENDIF}
gtk_window_set_transient_for(ATransientWindow^.GtkWindow,nil);
end;
end;
// setup transient relationships
for i:=0 to AllWindows.Count-1 do begin
ATransientWindow:=PTransientWindow(AllWindows[i]);
if ATransientWindow^.TransientParent=nil then continue;
{$IFDEF VerboseTransient}
DebugLn('Set TRANSIENT i=',i,'/',AllWindows.Count,
' Child=',ATransientWindow^.Component.Name,':',
ATransientWindow^.Component.ClassName,
' Index=',ATransientWindow^.SortIndex,
' Wnd=',DbgS(ATransientWindow^.GtkWindow),
' Parent=',DbgS(ATransientWindow^.TransientParent),
'');
{$ENDIF}
gtk_window_set_transient_for(ATransientWindow^.GtkWindow,
ATransientWindow^.TransientParent);
end;
end;
// clean up
for i:=0 to AllWindows.Count-1 do begin
ATransientWindow:=PTransientWindow(AllWindows[i]);
Dispose(ATransientWindow);
end;
AllWindows.Free;
finally
UpdatingTransientWindows:=false;
end;
end;
{------------------------------------------------------------------------------
procedure TGtkWidgetSet.UntransientWindow(GtkWindow: PGtkWindow);
------------------------------------------------------------------------------}
procedure TGtkWidgetSet.UntransientWindow(GtkWindow: PGtkWindow);
{$IFDEF VerboseTransient}
var
LCLObject: TObject;
{$ENDIF}
begin
{$IFDEF VerboseTransient}
DbgOut('TGtkWidgetSet.UntransientWindow ',DbgS(GtkWindow));
LCLObject:=GetLCLObject(PGtkWidget(GtkWindow));
if LCLObject<>nil then
DbgOut(' LCLObject=',LCLObject.ClassName)
else
DbgOut(' LCLObject=nil');
DebugLn('');
{$ENDIF}
// hide window, so that UpdateTransientWindows untransients it
if GTK_WIDGET_VISIBLE(PgtkWidget(GtkWindow)) then
gtk_widget_hide(PgtkWidget(GtkWindow));
UpdateTransientWindows;
// remove it from the modal window list
if ModalWindows<>nil then begin
ModalWindows.Remove(GtkWindow);
if ModalWindows.Count=0 then FreeAndNil(ModalWindows);
end;
end;
{------------------------------------------------------------------------------
Method: TGtkWidgetSet.SendCachedLCLMessages
Params: None
Returns: Nothing
Some LCL messages are not sent directly to the gtk. Send them now.
------------------------------------------------------------------------------}
procedure TGtkWidgetSet.SendCachedLCLMessages;
procedure SendCachedLCLResizeRequests;
var
Widget: PGtkWidget;
LCLControl: TWinControl;
IsTopLevelWidget: boolean;
TopologicalList: TFPList; // list of PGtkWidget;
i: integer;
procedure RaiseWidgetWithoutControl;
begin
RaiseGDBException('ERROR: TGtkWidgetSet.SendCachedLCLMessages Widget '
+DbgS(Widget)+' without LCL control');
end;
begin
if FWidgetsWithResizeRequest.Count=0 then exit;
{$IFDEF VerboseSizeMsg}
DebugLn('GGG1 SendCachedLCLResizeRequests SizeMsgCount=',dbgs(FWidgetsWithResizeRequest.Count));
{$ENDIF}
TopologicalList:=CreateTopologicalSortedWidgets(FWidgetsWithResizeRequest);
for i:=0 to TopologicalList.Count-1 do begin
Widget:=TopologicalList[i];
// resize widget
LCLControl:=TWinControl(GetLCLObject(Widget));
if (LCLControl=nil) or (not (LCLControl is TControl)) then begin
RaiseWidgetWithoutControl;
end;
{$IFDEF VerboseSizeMsg}
if CompareText(LCLControl.ClassName,'TScrollBar')=0 then
DebugLn('SendCachedLCLMessages ',LCLControl.Name,':',LCLControl.ClassName,
' ',dbgs(LCLControl.Left)+','+dbgs(LCLControl.Top)+','+dbgs(LCLControl.Width)+'x'+dbgs(LCLControl.Height));
{$ENDIF}
IsTopLevelWidget:= (LCLControl is TCustomForm)
and (LCLControl.Parent = nil);
if not IsTopLevelWidget then begin
SetWidgetSizeAndPosition(LCLControl);
end
else begin
// resize form
{$IFDEF VerboseFormPositioning}
DebugLn('VFP SendCachedLCLMessages1 ', dbgs(GetControlWindow(Widget)<>nil));
if (LCLControl is TCustomForm) then
DebugLn('VFP SendCachedLCLMessages2 ',LCLControl.ClassName,' ',
dbgs(LCLControl.Left),',',dbgs(LCLControl.Top),',',dbgs(LCLControl.Width),',',dbgs(LCLControl.Height));
{$ENDIF}
SetWindowSizeAndPosition(PgtkWindow(Widget),TWinControl(LCLControl));
end;
end;
TopologicalList.Free;
FWidgetsWithResizeRequest.Clear;
end;
begin
SendCachedLCLResizeRequests;
end;
{------------------------------------------------------------------------------
Method: TGtkWidgetSet.LCLtoGtkMessagePending
Params: None
Returns: boolean
Returns true if any messages from the lcl to the gtk is in cache and needs
delivery.
------------------------------------------------------------------------------}
function TGtkWidgetSet.LCLtoGtkMessagePending: boolean;
begin
Result:=(FWidgetsWithResizeRequest.Count>0);
end;
{------------------------------------------------------------------------------
Method: TGtkWidgetSet.SendCachedGtkMessages
Params: None
Returns: Nothing
Some Gtk messages are not sent directly to the LCL. Send them now.
------------------------------------------------------------------------------}
procedure TGtkWidgetSet.SendCachedGtkMessages;
begin
SendCachedGtkResizeNotifications;
end;
{
Changes some colors of the widget style
IMPORTANT:
SystemColors like clBtnFace depend on the theme and widget class, so they
must be read from the theme. But many gtk themes do not provide all colors
and instead only provide bitmaps.
Since we don't have good fallbacks yet, and many controls use SystemColors
for Delphi compatibility: ignore SystemColors from the following list:
Gtk 2:
clNone (should be ignored anyway),
clBtnFace,
Gtk 1:
clNone,
Any system color
}
procedure TGtkWidgetSet.SetWidgetColor(const AWidget: PGtkWidget;
const FGColor, BGColor: TColor; const Mask: TGtkStateEnum);
var
i: integer;
xfg, xbg: TGdkColor;
ChangeFGColor: Boolean;
ChangeBGColor: Boolean;
{$IFDEF Gtk1}
WindowStyle, RCStyle: PGtkStyle;
begin
ChangeFGColor := (FGColor <> clNone);
ChangeBGColor := (BGColor <> clNone);
if (not ChangeFGColor) and (not ChangeBGColor) then Exit;
// the GTKAPIWidget is self drawn, so no use to change the widget style.
if GtkWidgetIsA(AWidget, GTKAPIWidget_GetType) then Exit;
{$IFDEF DisableWidgetColor}
exit;
{$ENDIF}
if (GTK_WIDGET_REALIZED(AWidget)) then
WindowStyle := gtk_widget_get_style(AWidget)
else
WindowStyle := gtk_rc_get_style(AWidget);
if WindowStyle <> nil then WindowStyle := gtk_style_copy(WindowStyle);
if (Windowstyle = nil) then
Windowstyle := gtk_style_new;
//DebugLn('TGtkWidgetSet.SetWidgetColor ',GetWidgetDebugReport(AWidget),' ',hexstr(FGColor,8),' ',hexstr(BGColor,8));
//RaiseGDBException('');
if ChangeFGColor then
begin
if (FGColor = clDefault) then
begin
RCStyle := gtk_rc_get_style(AWidget);
if RCStyle <> nil then
for i := GTK_STATE_NORMAL to GTK_STATE_INSENSITIVE do
begin
if i in mask then
begin
if GTK_STYLE_TEXT in mask then
windowStyle^.text[i] := RCStyle^.text[i]
else
windowStyle^.fg[i] := RCStyle^.fg[i];
end;
end;
end
else
begin
xfg := AllocGDKColor(colorToRGB(FGColor));
for i := GTK_STATE_NORMAL to GTK_STATE_INSENSITIVE do
begin
if i in mask then
begin
if GTK_STYLE_TEXT in mask then
windowStyle^.text[i] := xfg
else
windowStyle^.fg[i] := xfg;
end;
end;
end;
end;
if ChangeBGColor then
begin
if (BGColor = clDefault) or (BGColor = clBtnFace) then
begin
RCStyle := gtk_rc_get_style(AWidget);
if RCStyle <> nil then
for i := GTK_STATE_NORMAL to GTK_STATE_INSENSITIVE do
begin
if i in mask then
begin
if GTK_STYLE_BASE in mask then
windowStyle^.base[i] := RCStyle^.base[i]
else
windowStyle^.bg[i] := RCStyle^.bg[i];
end;
end;
end
else
begin
xbg := AllocGDKColor(colorToRGB(BGColor));
for i := GTK_STATE_NORMAL to GTK_STATE_INSENSITIVE do
begin
if i in mask then
begin
if GTK_STYLE_BASE in mask then
windowStyle^.base[i] := xbg
else
windowStyle^.bg[i] := xbg;
end;
end;
end;
end;
gtk_widget_set_style(aWidget, windowStyle);
end;
{$ELSE}
NewColor: PGdkColor;
begin
ChangeFGColor := (FGColor <> clNone);
ChangeBGColor := (BGColor <> clNone);
if (not ChangeFGColor) and (not ChangeBGColor) then Exit;
// the GTKAPIWidget is self drawn, so no use to change the widget style.
if GtkWidgetIsA(AWidget, GTKAPIWidget_GetType) then Exit;
{$IFDEF DisableWidgetColor}
exit;
{$ENDIF}
//DebugLn('TGtkWidgetSet.SetWidgetColor ',GetWidgetDebugReport(AWidget),' ',hexstr(FGColor,8),' ',hexstr(BGColor,8));
//RaiseGDBException('');
if ChangeFGColor then
begin
if (FGColor = clDefault) then
NewColor := nil
else
begin
xfg := AllocGDKColor(ColorToRGB(FGColor));
NewColor := @xfg;
end;
for i := GTK_STATE_NORMAL to GTK_STATE_INSENSITIVE do
begin
if i in mask then
begin
if GTK_STYLE_TEXT in mask then
gtk_widget_modify_text(AWidget, i, NewColor)
else
gtk_widget_modify_fg(AWidget, i, NewColor);
end;
end;
end;
if ChangeBGColor then
begin
if (BGColor = clDefault) or (BGColor = clBtnFace) then
NewColor := nil
else
begin
xbg := AllocGDKColor(ColorToRGB(BGColor));
NewColor := @xbg;
end;
for i := GTK_STATE_NORMAL to GTK_STATE_INSENSITIVE do
begin
if i in mask then
begin
if GTK_STYLE_BASE in mask then
gtk_widget_modify_base(AWidget, i, NewColor)
else
gtk_widget_modify_bg(AWidget, i, NewColor);
end;
end;
end;
end;
{$ENDIF}
{------------------------------------------------------------------------------
Method: TGtkWidgetSet.AppProcessMessages
Params: None
Returns: Nothing
Handle all pending messages of the GTK engine and of this interface
------------------------------------------------------------------------------}
procedure TGtkWidgetSet.AppProcessMessages;
function PendingGtkMessagesExists: boolean;
begin
Result:=(gtk_events_pending<>0) or LCLtoGtkMessagePending;
end;
var
vlItem : TGtkMessageQueueItem;
vlMsg : PMSg;
i: Integer;
begin
repeat
// send cached LCL messages to the gtk
//DebugLn(['TGtkWidgetSet.AppProcessMessages SendCachedLCLMessages']);
SendCachedLCLMessages;
// let gtk handle up to 100 messages and call our callbacks
i:=100;
while (gtk_events_pending<>0) and (i>0) do begin
gtk_main_iteration_do(False);
dec(i);
end;
//DebugLn(['TGtkWidgetSet.AppProcessMessages SendCachedGtkMessages']);
// send cached gtk messages to the lcl
SendCachedGtkMessages;
// then handle our own messages
while not Application.Terminated do begin
fMessageQueue.Lock;
try
// fetch first message
vlItem := fMessageQueue.FirstMessageItem;
if vlItem = nil then break;
// remove message from queue
if vlItem.IsPaintMessage then begin
//DebugLn(['TGtkWidgetSet.AppProcessMessages Paint: ',DbgSName(GetLCLObject(Pointer(vlItem.Msg^.hwnd)))]);
// paint messages are the most expensive messages in the LCL,
// therefore they are sent after all other
if MovedPaintMessageCount<10 then begin
inc(MovedPaintMessageCount);
if fMessageQueue.HasNonPaintMessages then begin
// there are non paint messages -> move paint message to the end
fMessageQueue.MoveToLast(FMessageQueue.First);
continue;
end else begin
// there are only paint messages left in the queue
// -> check other queues
if PendingGtkMessagesExists then break;
end;
end else begin
// handle this paint message now
MovedPaintMessageCount:=0;
end;
end;
//DebugLn(['TGtkWidgetSet.AppProcessMessages SendMessage: ',DbgSName(GetLCLObject(Pointer(vlItem.Msg^.hwnd)))]);
vlMsg:=fMessageQueue.PopFirstMessage;
finally
fMessageQueue.UnLock;
end;
// Send message
try
with vlMsg^ do SendMessage(hWND, Message, WParam, LParam);
finally
Dispose(vlMsg);
end;
end;
// proceed until all messages are handled
until (not PendingGtkMessagesExists) or Application.Terminated;
end;
{------------------------------------------------------------------------------
Method: TGtkWidgetSet.AppWaitMessage
Params: None
Returns: Nothing
Passes execution control to the GTK engine till something happens
------------------------------------------------------------------------------}
procedure TGtkWidgetSet.AppWaitMessage;
begin
WaitingForMessages:=true;
gtk_main_iteration_do(True);
WaitingForMessages:=false;
end;
procedure TGtkWidgetSet.FreeStockItems;
procedure DeleteAndNilObject(var h: HGDIOBJ);
begin
if h <> 0 then
begin
PGdiObject(h)^.Shared := False;
PGdiObject(h)^.RefCount := 1;
end;
DeleteObject(h);
h := 0;
end;
begin
DeleteAndNilObject(FStockNullBrush);
DeleteAndNilObject(FStockBlackBrush);
DeleteAndNilObject(FStockLtGrayBrush);
DeleteAndNilObject(FStockGrayBrush);
DeleteAndNilObject(FStockDkGrayBrush);
DeleteAndNilObject(FStockWhiteBrush);
DeleteAndNilObject(FStockNullPen);
DeleteAndNilObject(FStockBlackPen);
DeleteAndNilObject(FStockWhitePen);
DeleteAndNilObject(FStockSystemFont);
end;
procedure TGTKWidgetSet.InitSystemColors;
begin
// we need to request style and inside UpdateSysColorMap will be indirectly called
GetStyle(lgsButton);
GetStyle(lgsWindow);
GetStyle(lgsMenuBar);
GetStyle(lgsMenuitem);
GetStyle(lgsVerticalScrollbar);
GetStyle(lgsTooltip);
end;
procedure TGTKWidgetSet.InitSystemBrushes;
var
i: integer;
LogBrush: TLogBrush;
begin
FillChar(LogBrush, SizeOf(TLogBrush), 0);
for i := Low(FSysColorBrushes) to High(FSysColorBrushes) do
begin
LogBrush.lbColor := GetSysColor(i);
FSysColorBrushes[i] := CreateBrushIndirect(LogBrush);
PGDIObject(FSysColorBrushes[i])^.Shared := True;
end;
end;
procedure TGTKWidgetSet.FreeSystemBrushes;
procedure DeleteAndNilObject(var h: HGDIOBJ);
begin
if h <> 0 then
begin
PGdiObject(h)^.Shared := False;
PGdiObject(h)^.RefCount := 1;
end;
DeleteObject(h);
h := 0;
end;
var
i: integer;
begin
for i := Low(FSysColorBrushes) to High(FSysColorBrushes) do
DeleteAndNilObject(FSysColorBrushes[i]);
end;
{------------------------------------------------------------------------------
Method: TGtkWidgetSet.AppTerminate
Params: None
Returns: Nothing
*Note: Tells GTK Engine to halt and destroy
------------------------------------------------------------------------------}
procedure TGtkWidgetSet.AppTerminate;
begin
FreeAllStyles;
// MG: using gtk_main_quit is not a clean way to close
//gtk_main_quit;
end;
function TGTKWidgetSet.GetAppActive: Boolean;
begin
Result := FAppActive;
end;
procedure TGTKWidgetSet.SetAppActive(const AValue: Boolean);
begin
if AValue <> FAppActive then
begin
FAppActive := AValue;
if FAppActive then
begin
Application.IntfAppActivate;
AppRestoreStayOnTopFlags(False);
end else
begin
Application.IntfAppDeactivate;
AppRemoveStayOnTopFlags(False);
end;
end;
end;
function gtkAppFocusTimer(Data: gPointer):gBoolean; cdecl;
// needed by app activate/deactivate
begin
Result := CallBackDefaultReturn;
if TGtkWidgetSet(WidgetSet).LastFocusIn = nil then
TGtkWidgetSet(WidgetSet).AppActive := False;
gtk_timeout_remove(TGtkWidgetSet(WidgetSet).FocusTimer);
TGtkWidgetSet(WidgetSet).FocusTimer := 0;
end;
procedure TGTKWidgetSet.StartFocusTimer;
begin
FLastFocusIn := nil;
if FocusTimer <> 0 then
gtk_timeout_remove(TGtkWidgetSet(WidgetSet).FocusTimer);
FocusTimer := gtk_timeout_add(50, TGtkFunction(@gtkAppFocusTimer), nil);
end;
function TGTKWidgetSet.CreateThemeServices: TThemeServices;
begin
Result := TGtkThemeServices.Create;
end;
procedure TGtkWidgetSet.InitStockItems;
var
LogBrush: TLogBrush;
logPen : TLogPen;
begin
FillChar(LogBrush, SizeOf(TLogBrush), 0);
LogBrush.lbStyle := BS_NULL;
FStockNullBrush := CreateBrushIndirect(LogBrush);
PGDIObject(FStockNullBrush)^.Shared := True;
LogBrush.lbStyle := BS_SOLID;
LogBrush.lbColor := $000000;
FStockBlackBrush := CreateBrushIndirect(LogBrush);
PGDIObject(FStockBlackBrush)^.Shared := True;
LogBrush.lbColor := $C0C0C0;
FStockLtGrayBrush := CreateBrushIndirect(LogBrush);
PGDIObject(FStockLtGrayBrush)^.Shared := True;
LogBrush.lbColor := $808080;
FStockGrayBrush := CreateBrushIndirect(LogBrush);
PGDIObject(FStockGrayBrush)^.Shared := True;
LogBrush.lbColor := $404040;
FStockDkGrayBrush := CreateBrushIndirect(LogBrush);
PGDIObject(FStockDkGrayBrush)^.Shared := True;
LogBrush.lbColor := $FFFFFF;
FStockWhiteBrush := CreateBrushIndirect(LogBrush);
PGDIObject(FStockWhiteBrush)^.Shared := True;
LogPen.lopnStyle := PS_NULL;
LogPen.lopnWidth.X := 1;
LogPen.lopnColor := $FFFFFF;
FStockNullPen := CreatePenIndirect(LogPen);
PGDIObject(FStockNullPen)^.Shared := True;
LogPen.lopnStyle := PS_SOLID;
FStockWhitePen := CreatePenIndirect(LogPen);
PGDIObject(FStockWhitePen)^.Shared := True;
LogPen.lopnColor := $000000;
FStockBlackPen := CreatePenIndirect(LogPen);
PGDIObject(FStockBlackPen)^.Shared := True;
FStockSystemFont := 0;//Styles aren't initialized yet
end;
{------------------------------------------------------------------------------
Method: TGtkWidgetSet.AppInit
Params: None
Returns: Nothing
*Note: Initialize GTK engine
(is called by TApplication.Initialize which is typically after all
finalization sections)
------------------------------------------------------------------------------}
procedure TGtkWidgetSet.AppInit(var ScreenInfo: TScreenInfo);
begin
InitKeyboardTables;
{ Compute pixels per inch variable }
ScreenInfo.PixelsPerInchX :=
RoundToInt(gdk_screen_width / (GetScreenWidthMM / 25.4));
ScreenInfo.PixelsPerInchY :=
RoundToInt(gdk_screen_height / (GetScreenHeightMM / 25.4));
ScreenInfo.ColorDepth := gdk_visual_get_system^.depth;
end;
{------------------------------------------------------------------------------
Method: TGtkWidgetSet.AppMinimize
Params: None
Returns: Nothing
Minimizes the application
------------------------------------------------------------------------------}
procedure TGtkWidgetSet.AppMinimize;
var
i: Integer;
AForm: TCustomForm;
begin
//debugln('TGtkWidgetSet.AppMinimize A');
if Screen=nil then exit;
for i:=0 to Screen.CustomFormCount-1 do begin
AForm:=Screen.CustomForms[i];
//debugln('TGtkWidgetSet.AppMinimize B ',DbgSName(AForm),' AForm.Parent=',DbgSName(AForm.Parent),' AForm.HandleAllocated=',dbgs(AForm.HandleAllocated));
if (AForm.Parent=nil) and AForm.HandleAllocated
and AForm.Visible then begin
ShowWindow(AForm.Handle, SW_MINIMIZE);
end;
end;
end;
procedure TGTKWidgetSet.AppRestore;
begin
DebugLn(['TGTKWidgetSet.AppRestore TODO']);
end;
{------------------------------------------------------------------------------
Method: TGtkWidgetSet.AppBringToFront
Params: None
Returns: Nothing
Shows the application above all other non-topmost windows
------------------------------------------------------------------------------}
procedure TGtkWidgetSet.AppBringToFront;
begin
// TODO: Implement me!
end;
{------------------------------------------------------------------------------
procedure TGTKWidgetSet.AppSetTitle(const ATitle: string);
-------------------------------------------------------------------------------}
procedure TGTKWidgetSet.AppSetTitle(const ATitle: string);
begin
end;
function TGTKWidgetSet.LCLPlatform: TLCLPlatform;
begin
Result:= lpGtk;
end;
{------------------------------------------------------------------------------
Method: TGtkWidgetSet.RecreateWnd
Params: Sender: TObject - the lcl wincontrol, that is to recreated
Returns: none
Destroys Handle and child Handles and recreates them.
-------------------------------------------------------------------------------}
function TGtkWidgetSet.RecreateWnd(Sender: TObject): Integer;
var
aWinControl, aParent: TWinControl;
begin
aWinControl := TWinControl(Sender);
aParent := aWinControl.Parent;
if aParent <> nil then
begin
// remove and insert the control
// this will destroy and recreate all child handles
aWinControl.Parent := nil;
aWinControl.Parent := aParent;
end;
DebugLn(['TGtkWidgetSet.RecreateWnd ',DbgSName(Sender)]);
ResizeChild(Sender,aWinControl.Left,aWinControl.Top,
aWinControl.Width,aWinControl.Height);
SetVisible(Sender, aWinControl.HandleObjectShouldBeVisible);
Result := 0;
end;
{------------------------------------------------------------------------------
Function: CreateTimer
Params: Interval:
TimerFunc: Callback
Returns: a GTK-timer id (use this ID to destroy timer)
This function will create a GTK timer object and associate a callback to it.
Design: A callback to the TTimer class is implemented.
------------------------------------------------------------------------------}
function TGtkWidgetSet.CreateTimer(Interval: integer;
TimerProc: TWSTimerProc) : TLCLHandle;
var
TimerInfo: PGtkITimerinfo;
begin
if ((Interval < 1) or (not Assigned(TimerProc)))
then
Result := 0
else begin
New(TimerInfo);
FillByte(TimerInfo^,SizeOf(TGtkITimerinfo),0);
TimerInfo^.TimerFunc := TimerProc;
{$IFDEF VerboseTimer}
DebugLn(['TGtkWidgetSet.CreateTimer Interval=',dbgs(Interval)]);
{$ENDIF}
Result:= gtk_timeout_add(Interval, @gtkTimerCB, TimerInfo);
if Result = 0 then
Dispose(TimerInfo)
else begin
TimerInfo^.TimerFunc := TimerProc;
TimerInfo^.TimerHandle:=Result;
FTimerData.Add(TimerInfo);
end;
end;
end;
{------------------------------------------------------------------------------
Function: DestroyTimer
Params: TimerHandle
Returns:
WARNING: There seems to be a bug in gtk-1.2.x which breaks gtk_timeout_remove
thus we can't dispose PGtkITimerinfo here (s.a. gtkTimerCB).
------------------------------------------------------------------------------}
function TGtkWidgetSet.DestroyTimer(TimerHandle: TLCLHandle) : boolean;
var
n : integer;
TimerInfo : PGtkITimerinfo;
begin
//DebugLn('Trace:removing timer!!!');
n := FTimerData.Count;
while (n > 0) do begin
dec (n);
TimerInfo := PGtkITimerinfo(FTimerData.Items[n]);
if (TimerInfo^.TimerHandle=guint(TimerHandle)) then
begin
{$IFDEF VerboseTimer}
DebugLn(['TGtkWidgetSet.DestroyTimer TimerInfo=',DbgS(TimerInfo),' TimerHandle=',TimerInfo^.TimerHandle]);
{$ENDIF}
gtk_timeout_remove(TimerInfo^.TimerHandle);
FTimerData.Delete(n);
Dispose(TimerInfo);
end;
end;
Result:=true;
end;
{------------------------------------------------------------------------------
function TGtkWidgetSet.InternalGetDIBits(DC: HDC; Bitmap: HBitmap;
StartScan, NumScans: UINT;
BitSize : Longint; Bits: Pointer;
var BitInfo: BitmapInfo; Usage: UINT; DIB : Boolean): Integer;
------------------------------------------------------------------------------}
function TGtkWidgetSet.InternalGetDIBits(DC: HDC; Bitmap: HBitmap;
StartScan, NumScans: UINT; BitSize : Longint; Bits: Pointer;
var BitInfo: BitmapInfo; Usage: UINT; DIB : Boolean): Integer;
const
PadLine : array[0..12] of Byte = (0,0,0,0,0,0,0,0,0,0,1,0,0);
TempBuffer : array[0..2] of Byte = (0,0,0);
var
GdiObject: PGDIObject absolute Bitmap;
Source: PGDKPixbuf;
rowstride, PixelPos: Longint;
Pixels: PByte;
FDIB: TDIBSection;
X, Y: Longint;
PadSize, Pos, BytesPerPixel: Longint;
Buf16Bit: word;
procedure DataSourceInitialize(Bitmap : PGDIObject; Width : Longint);
begin
Source := nil;
case Bitmap^.GDIBitmapType of
gbBitmap:
if Bitmap^.GDIBitmapObject <> nil
then begin
{$ifdef VerboseGdkPixbuf} debugln('DataSourceInitialize A1');{$endif}
Source := CreatePixbufFromDrawable(Bitmap^.GDIBitmapObject, Bitmap^.Colormap, False, 0,StartScan,0,0,Width,StartScan + NumScans);
rowstride := gdk_pixbuf_get_rowstride(Source);
Pixels := PByte(gdk_pixbuf_get_pixels(Source));
{$ifdef VerboseGdkPixbuf} debugln('DataSourceInitialize A2');{$endif}
end;
gbPixmap:
if Bitmap^.GDIPixmapObject.Image <> nil
then begin
{$ifdef VerboseGdkPixbuf} debugln('DataSourceInitialize B1');{$endif}
Source := CreatePixbufFromDrawable(Bitmap^.GDIPixmapObject.Image, Bitmap^.Colormap, False, 0, StartScan, 0, 0, Width, StartScan + NumScans);
{$IFDEF VerboseGtkToDos}{$note TODO: Apply alpha based on mask when 32bit mode is added}{$ENDIF}
rowstride := gdk_pixbuf_get_rowstride(Source);
Pixels := PByte(gdk_pixbuf_get_pixels(Source));
{$ifdef VerboseGdkPixbuf} debugln('DataSourceInitialize B2');{$endif}
end;
gbPixbuf:
if Bitmap^.GDIPixbufObject <> nil
then begin
rowstride := gdk_pixbuf_get_rowstride(Bitmap^.GDIPixbufObject);
Pixels := PByte(gdk_pixbuf_get_pixels(Bitmap^.GDIPixbufObject));
end;
end;
end;
function DataSourceGetGDIRGB(Bitmap : PGDIObject; X, Y : Longint) : TGDIRGB;
begin
if Bitmap <> nil then ; //Keep compiler happy..
PixelPos := rowstride*Y + X*3;
with Result do
begin
Red := Pixels[PixelPos + 0];
Green := Pixels[PixelPos + 1];
Blue := Pixels[PixelPos + 2];
end;
end;
procedure DataSourceFinalize;
begin
if Source <> nil
then gdk_pixbuf_unref(Source);
end;
procedure WriteData(Value : PByte; Size : Longint);
begin
System.Move(Value^, PByte(Bits)[Pos], Size);
Inc(Pos, Size);
end;
procedure WriteData(Value : Word);
begin
PByte(Bits)[Pos] := Lo(Value);
inc(Pos);
PByte(Bits)[Pos] := Hi(Value);
inc(Pos);
end;
begin
//DebugLn('trace:[TGtkWidgetSet.InternalGetDIBits]');
Result := 0;
if (DC=0) or (Usage=0) then ;
if not IsValidGDIObject(Bitmap)
then begin
DebugLn('WARNING: [TGtkWidgetSet.InternalGetDIBits] invalid Bitmap!');
Exit;
end;
if GdiObject^.GDIType <> gdiBitmap
then begin
DebugLn('WARNING: [TGtkWidgetSet.InternalGetDIBits] not a Bitmap!');
Exit;
end;
FillChar(FDIB, SizeOf(FDIB), 0);
GetObject(Bitmap, SizeOf(FDIB), @FDIB);
BitInfo.bmiHeader := FDIB.dsBmih;
with GdiObject^, BitInfo.bmiHeader do
begin
if not DIB
then begin
NumScans := biHeight;
StartScan := 0;
end;
BytesPerPixel := biBitCount div 8;
if BitSize <= 0 then
BitSize := longint(SizeOf(Byte))
*(longint(biSizeImage) div biHeight)
*longint(NumScans + StartScan);
if MemSizeLessThan(MemSize(Bits), PtrInt(BitSize))
then begin
DebugLn('WARNING: [TGtkWidgetSet.InternalGetDIBits] not enough memory allocated for Bits!');
exit;
end;
// ToDo: other bitcounts
if (biBitCount<>24) and (biBitCount<>16)
then begin
DebugLn('WARNING: [TGtkWidgetSet.InternalGetDIBits] unsupported biBitCount=',dbgs(biBitCount));
exit;
end;
if NumScans = 0 then Exit;
Pos := 0;
PadSize := (Longint(biSizeImage) div biHeight) - biWidth * BytesPerPixel;
{$ifdef DebugGDK} BeginGDKErrorTrap; try{$ENDIF}
DataSourceInitialize(GdiObject, biWidth);
if DIB
then Y := NumScans - 1
else Y := 0;
case biBitCount of
24: repeat
for X := 0 to biwidth - 1 do
begin
with DataSourceGetGDIRGB(PGDIObject(Bitmap), X, Y) do
begin
TempBuffer[0] := Blue;
TempBuffer[1] := Green;
TempBuffer[2] := Red;
end;
WriteData(TempBuffer, BytesPerPixel);
end;
WriteData(PadLine, PadSize);
if DIB
then dec(y)
else inc(y);
until (Y < 0) or (y >= longint(NumScans));
16: repeat
for X := 0 to biwidth - 1 do
begin
with DataSourceGetGDIRGB(PGDIObject(Bitmap), X, Y) do
begin
Buf16Bit := (Blue shr 3) shl 11
+ (Green shr 2) shl 5
+ (Red shr 3);
end;
WriteData(Buf16Bit);
end;
WriteData(PadLine, PadSize);
if DIB
then dec(y)
else inc(y);
until (Y < 0) or (y >= longint(NumScans));
end;
end;
DataSourceFinalize;
{$ifdef DebugGDK}finally EndGDKErrorTrap; end;{$endif}
end;
function TGtkWidgetSet.RawImage_DescriptionFromDrawable(out ADesc: TRawImageDescription; ADrawable: PGdkDrawable; ACustomAlpha: Boolean): Boolean;
var
Visual: PGdkVisual;
Image: PGdkImage;
Width, Height, Depth: integer;
IsBitmap: Boolean;
begin
Visual := nil;
Width := 0;
Height := 0;
if ADrawable = nil
then begin
Visual := gdk_visual_get_system;
IsBitmap := False;
end
else begin
{$ifdef gtk1}
gdk_window_get_geometry(ADrawable, nil, nil, @Width, @Height, @Depth);
{$else}
gdk_drawable_get_size(ADrawable, @Width, @Height);
Depth := gdk_drawable_get_depth(ADrawable);
{$endif}
Visual := gdk_window_get_visual(ADrawable);
// pixmaps and bitmaps do not have a visual, but for pixmaps we need one
if Visual = nil
then Visual := gdk_visual_get_best_with_depth(Depth);
IsBitmap := Depth = 1;
end;
if (Visual = nil) and not IsBitmap // bitmaps don't have a visual
then begin
DebugLn('TGtkWidgetSet.RawImage_DescriptionFromDrawable: visual failed');
Exit(False);
end;
ADesc.Init;
ADesc.Width := cardinal(Width);
ADesc.Height := cardinal(Height);
ADesc.BitOrder := riboBitsInOrder;
if ACustomAlpha
then begin
// always give pixbuf description for alpha images
ADesc.Format:=ricfRGBA;
ADesc.Depth := 32;
ADesc.BitsPerPixel := 32;
ADesc.LineEnd := rileDWordBoundary;
ADesc.ByteOrder := riboLSBFirst;
ADesc.RedPrec := 8;
ADesc.RedShift := 0;
ADesc.GreenPrec := 8;
ADesc.GreenShift := 8;
ADesc.BluePrec := 8;
ADesc.BlueShift := 16;
ADesc.AlphaPrec := 8;
ADesc.AlphaShift := 24;
ADesc.MaskBitsPerPixel := 1;
ADesc.MaskShift := 0;
ADesc.MaskLineEnd := rileByteBoundary;
ADesc.MaskBitOrder := riboBitsInOrder;
Exit(True);
end;
// Format
if IsBitmap
then begin
ADesc.Format := ricfGray;
end
else begin
case Visual^.thetype of
GDK_VISUAL_STATIC_GRAY: ADesc.Format:=ricfGray;
GDK_VISUAL_GRAYSCALE: ADesc.Format:=ricfGray;
GDK_VISUAL_STATIC_COLOR: ADesc.Format:=ricfGray; // this is not really gray, but an index in a color map, but colormaps are not supported yet, so use gray
GDK_VISUAL_PSEUDO_COLOR: ADesc.Format:=ricfGray;
GDK_VISUAL_TRUE_COLOR: ADesc.Format:=ricfRGBA;
GDK_VISUAL_DIRECT_COLOR: ADesc.Format:=ricfRGBA;
else
DebugLn('TGtkWidgetSet.GetWindowRawImageDescription unknown Visual type ',
dbgs(Integer(Visual^.thetype)));
Exit(False);
end;
end;
// Palette
if not IsBitmap
and (Visual^.thetype in [GDK_VISUAL_GRAYSCALE,
GDK_VISUAL_STATIC_COLOR,GDK_VISUAL_PSEUDO_COLOR])
then begin
// has palette
// ToDo
ADesc.PaletteColorCount:=0;
end;
// Depth
if IsBitmap
then ADesc.Depth := 1
else ADesc.Depth := Visual^.Depth;
if IsBitmap or (Visual^.byte_order = GDK_MSB_FIRST)
then ADesc.ByteOrder := riboMSBFirst
else ADesc.ByteOrder := riboLSBFirst;
ADesc.LineOrder := riloTopToBottom;
case ADesc.Depth of
0..8: ADesc.BitsPerPixel := ADesc.Depth;
9..16: ADesc.BitsPerPixel := 16;
17..32: ADesc.BitsPerPixel := 32;
else
ADesc.BitsPerPixel := 64;
end;
if IsBitmap
then begin
ADesc.LineEnd := rileByteBoundary;
ADesc.RedPrec := 1;
ADesc.RedShift := 0;
end
else begin
// Try retrieving the lineend
Image := gdk_image_new(GDK_IMAGE_NORMAL, Visual, 1, 1);
if Image = nil
then begin
DebugLn('TGtkWidgetSet.GetWindowRawImageDescription testimage creation failed ');
Exit(False);
end;
try
// the minimum alignment we can detect is bpp
// that is no problem since a line consists of n x bytesperpixel bytes
case Image^.bpl of
1: ADesc.LineEnd := rileByteBoundary;
2: ADesc.LineEnd := rileWordBoundary;
4: ADesc.LineEnd := rileDWordBoundary;
8: ADesc.LineEnd := rileQWordBoundary;
else
DebugLn('TGtkWidgetSet.GetWindowRawImageDescription Unknown line end: %d', [Image^.bpl]);
Exit(False);
end;
finally
gdk_image_destroy(Image);
Image := nil;
end;
ADesc.RedPrec := Visual^.red_prec;
ADesc.RedShift := Visual^.red_shift;
ADesc.GreenPrec := Visual^.green_prec;
ADesc.GreenShift := Visual^.green_shift;
ADesc.BluePrec := Visual^.blue_prec;
ADesc.BlueShift := Visual^.blue_shift;
ADesc.MaskBitsPerPixel := 1;
ADesc.MaskShift := 0;
ADesc.MaskLineEnd := rileByteBoundary;
ADesc.MaskBitOrder := riboBitsInOrder;
end;
{$IFDEF VerboseRawImage}
DebugLn('TGtkWidgetSet.GetWindowRawImageDescription A ',RawImageDescriptionAsString(Desc));
{$ENDIF}
Result := True;
end;
function TGtkWidgetSet.RawImage_DescriptionFromPixbuf(out ADesc: TRawImageDescription; APixbuf: PGdkPixbuf): boolean;
var
Width, Height, Depth: integer;
HasAlpha: Boolean;
begin
Width := 0;
Height := 0;
if APixbuf = nil
then begin
HasAlpha := False;
Depth := 24;
end
else begin
Width := gdk_pixbuf_get_width(APixbuf);
Height := gdk_pixbuf_get_height(APixbuf);
Depth := gdk_pixbuf_get_bits_per_sample(APixbuf) * gdk_pixbuf_get_n_channels(APixbuf);
HasAlpha := gdk_pixbuf_get_has_alpha(APixbuf);
end;
ADesc.Init;
ADesc.Width := cardinal(Width);
ADesc.Height := cardinal(Height);
ADesc.BitOrder := riboBitsInOrder;
if HasAlpha
then begin
// always give pixbuf description for alpha images
ADesc.Format:=ricfRGBA;
ADesc.Depth := 32;
ADesc.BitsPerPixel := 32;
ADesc.LineEnd := rileDWordBoundary;
ADesc.ByteOrder := riboLSBFirst;
ADesc.RedPrec := 8;
ADesc.RedShift := 0;
ADesc.GreenPrec := 8;
ADesc.GreenShift := 8;
ADesc.BluePrec := 8;
ADesc.BlueShift := 16;
ADesc.AlphaPrec := 8;
ADesc.AlphaShift := 24;
ADesc.MaskBitsPerPixel := 0;
ADesc.MaskShift := 0;
ADesc.MaskLineEnd := rileByteBoundary;
ADesc.MaskBitOrder := riboBitsInOrder;
end
else
begin
ADesc.Depth := Depth;
ADesc.BitsPerPixel := 32;
ADesc.LineEnd := rileDWordBoundary;
ADesc.ByteOrder := riboLSBFirst;
ADesc.MaskBitsPerPixel := 0;
ADesc.MaskShift := 0;
ADesc.MaskLineEnd := rileByteBoundary;
ADesc.MaskBitOrder := riboBitsInOrder;
ADesc.RedPrec := 8;
ADesc.RedShift := 0;
ADesc.GreenPrec := 8;
ADesc.GreenShift := 8;
ADesc.BluePrec := 8;
ADesc.BlueShift := 16;
ADesc.AlphaPrec := 0;
ADesc.AlphaShift := 24;
end;
Result := True;
end;
function TGtkWidgetSet.RawImage_FromDrawable(out ARawImage: TRawImage; ADrawable, AAlpha: PGdkDrawable; ARect: PRect): boolean;
var
ADesc: TRawImageDescription absolute ARawImage.Description;
function GetFromPixbuf(const ARect: TRect): Boolean;
var
Pixbuf: PGdkPixbuf;
pixels: pguchar;
begin
// create pixbuf with alpha channel first
Pixbuf := CreatePixbufFromDrawable(ADrawable, nil, True, ARect.Left, ARect.Top, 0, 0, ADesc.Width, ADesc.Height);
try
pixels := gdk_pixbuf_get_pixels(Pixbuf);
ARawImage.DataSize := PtrUInt(gdk_pixbuf_get_rowstride(Pixbuf)) * PtrUInt(ADesc.Height);
ReAllocMem(ARawImage.Data, ARawImage.DataSize);
if ARawImage.DataSize > 0 then
System.Move(pixels^, ARawImage.Data^, ARawImage.DataSize);
//DbgDumpPixmap(ADrawable, 'RawImage_FromDrawable - image');
//DbgDumpBitmap(AAlpha, 'RawImage_FromDrawable - alpha');
//DbgDumpPixbuf(Pixbuf, 'RawImage_FromDrawable - pixbuf');
finally
gdk_pixbuf_unref(Pixbuf);
end;
Result := RawImage_SetAlpha(ARawImage, AAlpha, @ARect);
end;
function GetFromImage(const ARect: TRect): Boolean;
var
Image: PGdkImage;
begin
Image := gdk_image_get(ADrawable, ARect.Left, ARect.Top, ADesc.Width, ADesc.Height);
if Image = nil
then begin
DebugLn('WARNING: TGtkWidgetSet.RawImage_FromDrawable: gdk_image_get failed');
exit(False);
end;
try
{$ifdef RawimageConsistencyCheks}
// consistency checks
if Description.Depth <> Image^.Depth then
RaiseGDBException('ARawImage.Description.Depth<>Image^.Depth '+IntToStr(ADesc.Depth)+'<>'+IntToStr(Image^.Depth));
if Description.BitsPerPixel <> GetPGdkImageBitsPerPixel(Image) then
RaiseGDBException('NewRawImage.Description.BitsPerPixel<>AnImage^.bpp');
{$endif}
ARawImage.DataSize := PtrUInt(Image^.bpl) * PtrUInt(Image^.Height);
{$IFDEF VerboseRawImage}
DebugLn('TGtkWidgetSet.RawImage_FromDrawable: G Width=',dbgs(Image^.Width),' Height=',dbgs(Image^.Height),
' BitsPerPixel=',dbgs(ADesc.BitsPerPixel),' bpl=',dbgs(Image^.bpl));
{$ENDIF}
// copy data
ADesc.Width := Image^.Width;
ADesc.Height := Image^.Height;
ReAllocMem(ARawImage.Data, ARawImage.DataSize);
if ARawImage.DataSize > 0
then begin
System.Move(Image^.Mem^, ARawImage.Data^, ARawImage.DataSize);
if Image^.Depth = 1
then CheckGdkImageBitOrder(Image, ARawImage.Data, ARawImage.DataSize);
end;
{$IFDEF VerboseRawImage}
DebugLn('TGtkWidgetSet.RawImage_FromDrawable: H ',
' Width=',dbgs(ADesc.Width),
' Height=',dbgs(ADesc.Height),
' Depth=',dbgs(ADesc.Depth),
' DataSize=',dbgs(ARawImage.DataSize));
{$ENDIF}
finally
gdk_image_destroy(Image);
end;
Result := True;
end;
var
R, R1: TRect;
UseAlpha: Boolean;
begin
Result := False;
if ADrawable = nil then
RaiseGDBException('TGtkWidgetSet.RawImage_FromDrawable');
ARawImage.Init;
UseAlpha := AAlpha <> nil;
// get raw image description
if not RawImage_DescriptionFromDrawable(ADesc, ADrawable, UseAlpha)
then begin
DebugLn('WARNING: TGtkWidgetSet.RawImage_FromDrawable: RawImage_DescriptionFromDrawable failed ');
Exit;
end;
R := Rect(0, 0, ADesc.Width, ADesc.Height);
if ARect <> nil
then begin
// get intersection
IntersectRect(R1, ARect^, R);
R := R1;
ADesc.Width := R.Right - R.Left;
ADesc.Height := R.Bottom - R.Top;
end;
{$IFDEF VerboseRawImage}
DebugLn('TGtkWidgetSet.RawImage_FromDrawable get image ',
dbgs(R.Left),',',dbgs(R.Top),',',dbgs(R.Right),',',dbgs(R.Bottom),
' GDKWindow=',DbgS(ADrawable));
{$ENDIF}
if (ADesc.Width <= 0) or (ADesc.Height <= 0)
then begin
//DebugLn('WARNING: TGtkWidgetSet.GetRawImageFromGdkWindow Intersection empty');
exit;
end;
if UseAlpha
then Result := GetFromPixbuf(R)
else Result := GetFromImage(R);
end;
function TGTKWidgetSet.RawImage_FromPixbuf(out ARawImage: TRawImage;
APixbuf: PGdkPixbuf; ARect: PRect): boolean;
var
ADesc: TRawImageDescription absolute ARawImage.Description;
Pixbuf: PGdkPixbuf;
pixels: pguchar;
Dest: PByte;
R, R1: TRect;
i: Integer;
SourceStride, DestStride: PtrUInt;
begin
Result := False;
if APixbuf = nil then
RaiseGDBException('TGtkWidgetSet.RawImage_FromPixbuf');
//DbgDumpPixbuf(APixbuf);
ARawImage.Init;
// get raw image description
if not RawImage_DescriptionFromPixbuf(ADesc, APixbuf)
then begin
DebugLn('WARNING: TGtkWidgetSet.RawImage_FromPixbuf: RawImage_DescriptionFromPixbuf failed ');
Exit;
end;
R := Rect(0, 0, ADesc.Width, ADesc.Height);
if ARect <> nil
then begin
// get intersection
IntersectRect(R1, ARect^, R);
R := R1;
ADesc.Width := R.Right - R.Left;
ADesc.Height := R.Bottom - R.Top;
end;
if (ADesc.Width <= 0) or (ADesc.Height <= 0)
then begin
exit;
end;
Pixbuf := gdk_pixbuf_new_subpixbuf(APixbuf, R.Left, R.Top, ADesc.Width, ADesc.Height);
try
pixels := gdk_pixbuf_get_pixels(Pixbuf);
SourceStride := PtrUInt(gdk_pixbuf_get_rowstride(Pixbuf));
DestStride := ADesc.BytesPerLine;
ARawImage.DataSize := DestStride * PtrUInt(ADesc.Height);
ReAllocMem(ARawImage.Data, ARawImage.DataSize);
if ARawImage.DataSize > 0 then
if SourceStride = DestStride then
System.Move(pixels^, ARawImage.Data^, ARawImage.DataSize)
else begin
{ Extra padding bytes - need to copy by line }
Dest := ARawImage.Data;
for i := 0 to ADesc.Height-1 do begin
System.Move(pixels^, Dest^, ADesc.BytesPerLine);
Inc(pixels, SourceStride);
Inc(Dest, DestStride);
end;
end;
finally
gdk_pixbuf_unref(Pixbuf);
end;
Result := True;
end;
function TGTKWidgetSet.RawImage_SetAlpha(var ARawImage: TRawImage; AAlpha: PGdkPixmap; ARect: PRect): boolean;
// ARect must have the same dimension as the rawimage
var
ADesc: TRawImageDescription absolute ARawImage.Description;
procedure SetAlpha_32_1(AImage: PGdkImage; AWidth, AHeight: Cardinal);
var
SrcPtr, DstPtr, SrcLinePtr, DstLinePtr: PByte;
DstPtr32: PDWord absolute DstPtr;
SrcBytesPerLine: Integer;
DstBytesPerLine: Integer;
SrcBit, SrcStartBit, ShiftInc: ShortInt;
DstMask: DWord;
DstSet: DWord;
X, Y: Cardinal;
{$ifdef hasx}
XImage: PXimage;
{$endif}
begin
SrcLinePtr := AImage^.mem;
SrcBytesPerLine := AImage^.bpl;
DstLinePtr := ARawImage.Data;
DstBytesPerLine := ARawImage.Description.BytesPerLine;
if ADesc.ByteOrder = DefaultByteOrder
then DstSet := (not ($FFFFFFFF shl ADesc.AlphaPrec)) shl ADesc.AlphaShift
else DstSet := (not ($FFFFFFFF shr ADesc.AlphaPrec)) shr ADesc.AlphaShift;
DstMask := not DstSet;
// bit order for X11 can be normal or reversed order, win32 and direct_fb
// is constant in reversed order
SrcStartBit := 7;
ShiftInc := -1;
{$ifdef HasX}
XImage := gdk_x11_image_get_ximage(AImage);
if XImage^.bitmap_bit_order = LSBFirst
then begin
SrcStartBit := 0;
ShiftInc := 1;
end;
{$endif}
for Y := 0 to AHeight - 1 do
begin
SrcBit := SrcStartBit;
SrcPtr := SrcLinePtr;
DstPtr := DstLinePtr;
for x := 0 to AWidth - 1 do
begin
if SrcPtr^ and (1 shl SrcBit) = 0
then DstPtr32^ := DstPtr32^ and DstMask
else DstPtr32^ := (DstPtr32^ and DstMask) or DstSet;
Inc(DstPtr32);
SrcBit := SrcBit + ShiftInc;
if SrcBit and $F8 <> 0
then begin
SrcBit := SrcBit and 7;
Inc(SrcPtr);
end;
end;
Inc(SrcLinePtr, SrcBytesPerLine);
Inc(DstLinePtr, DstBytesPerLine);
end;
end;
procedure SetAlpha_32_8(AImage: PGdkImage; AWidth, AHeight: Cardinal);
var
SrcPtr, DstPtr, SrcLinePtr, DstLinePtr: PByte;
DstPtr32: PDWord absolute DstPtr;
SrcBytesPerLine: Integer;
DstBytesPerLine: Integer;
DstMask: DWord;
DstShift: Byte;
X, Y: Cardinal;
begin
SrcLinePtr := AImage^.mem;
SrcBytesPerLine := AImage^.bpl;
DstLinePtr := ARawImage.Data;
DstBytesPerLine := ARawImage.Description.BytesPerLine;
DstMask := not (((1 shl ADesc.AlphaPrec) - 1) shl ADesc.AlphaShift);
DstShift := ADesc.AlphaShift;
for Y := 0 to AHeight - 1 do
begin
SrcPtr := SrcLinePtr;
DstPtr := DstLinePtr;
for x := 0 to AWidth - 1 do
begin
DstPtr32^ := (DstPtr32^ and DstMask) or (Cardinal(SrcPtr^) shl DstShift);
Inc(DstPtr32);
Inc(SrcPtr);
end;
Inc(SrcLinePtr, SrcBytesPerLine);
Inc(DstLinePtr, DstBytesPerLine);
end;
end;
var
Width, Height, H, W, D: gint;
Image: PGdkImage;
R: TRect;
begin
Result := False;
if ARawImage.Data = nil
then begin
{$ifdef RawimageConsistencyChecks}
RaiseGDBException('TGTKWidgetSet.RawImage_SetAlpha RawImage.Data = nil');
{$else}
DebugLn('WARNING: TGTKWidgetSet.RawImage_SetAlpha RawImage.Data = nil');
{$endif}
Exit;
end;
if ADesc.AlphaPrec = 0
then begin
{$ifdef RawimageConsistencyChecks}
RaiseGDBException('TGTKWidgetSet.RawImage_SetAlpha RawImage.Description.AlphaPrec = 0');
{$else}
DebugLn('WARNING: TGTKWidgetSet.RawImage_SetAlpha No alpha channel defined');
{$endif}
Exit;
end;
if AAlpha = nil
then begin
DebugLn('WARNING: TGTKWidgetSet.RawImage_SetAlpha Alpha = nil');
Exit;
end;
{$ifdef gtk1}
gdk_window_get_geometry(AAlpha, nil, nil, @W, @H, @D);
{$else}
gdk_drawable_get_size(AAlpha, @W, @H);
D := gdk_drawable_get_depth(AAlpha);
{$endif}
if (D <> 1) and (D <> 8)
then begin
DebugLn('WARNING: TGTKWidgetSet.RawImage_SetAlpha: Only a Depth of 1 or 8 is supported. (depth=%d)', [D]);
Exit;
end;
if ARect = nil
then R := Rect(0, 0, ADesc.Width, ADesc.Height)
else R := ARect^;
if (longint(W) < R.Right) or (longint(H) < R.Bottom)
then begin
DebugLn('WARNING: TGTKWidgetSet.RawImage_SetAlpha: Rect(%d,%d %d,%d) outside alpha pixmap(0,0 %d,%d)', [R.Left, R.Top, R.Right, R.Bottom, W, H]);
Exit;
end;
Width := R.Right - R.Left;
Height := R.Bottom - R.Top;
if Width <> ADesc.Width
then begin
{$ifdef RawimageConsistencyChecks}
RaiseGDBException('TGTKWidgetSet.RawImage_SetAlpha: Width <> RawImage.Description.Width');
{$else}
DebugLn('WARNING: TGTKWidgetSet.RawImage_SetAlpha: Width(=%d) <> RawImage.Description.Width(=%d)', [Width, ADesc.Width]);
{$endif}
Exit;
end;
if Height <> ADesc.Height
then begin
{$ifdef RawimageConsistencyChecks}
RaiseGDBException('TGTKWidgetSet.RawImage_SetAlpha: Height <> RawImage.Description.Height');
{$else}
DebugLn('WARNING: TGTKWidgetSet.RawImage_SetAlpha: Height(=%d) <> RawImage.Description.Height(=%d)', [Height, ADesc.Height]);
{$endif}
Exit;
end;
// get gdk_image from gdkbitmap
Image := gdk_image_get(AAlpha, R.Left, R.Top, Width, Height);
if Image = nil
then begin
DebugLn('WARNING: TGtkWidgetSet.RawImage_SetAlpha: gdk_image_get failed');
Exit;
end;
try
case ADesc.BitsPerPixel of
32: begin
if D = 1
then SetAlpha_32_1(Image, Width, Height)
else SetAlpha_32_8(Image, Width, Height);
end;
else
DebugLn('WARNING: TGtkWidgetSet.RawImage_SetAlpha: RawImage.Description.BitsPerPixel=%d not supported', [ADesc.BitsPerPixel]);
Exit;
end;
finally
gdk_image_destroy(Image);
end;
Result:=true;
end;
function TGTKWidgetSet.RawImage_AddMask(var ARawImage: TRawImage; AMask: PGdkBitmap; ARect: PRect): boolean;
// ARect must have the same dimension as the rawimage
var
ADesc: TRawImageDescription absolute ARawImage.Description;
Left, Top, Width, Height, H: longint;
Image: PGdkImage;
BytesPerLine: Integer;
SrcPtr, DstPtr: PByte;
begin
Result := False;
if ARawImage.Mask <> nil
then begin
{$ifdef RawimageConsistencyChecks}
RaiseGDBException('TGTKWidgetSet.RawImage_AddMask RawImage.Mask <> nil');
{$else}
DebugLn('WARNING: TGTKWidgetSet.RawImage_AddMask RawImage.Mask <> nil');
{$endif}
Exit;
end;
if AMask = nil
then begin
DebugLn('WARNING: TGTKWidgetSet.RawImage_AddMask AMask = nil');
Exit;
end;
if ARect = nil
then begin
Left := 0;
Top := 0;
Width := ADesc.Width;
Height := ADesc.Height;
end
else begin
Left := ARect^.Left;
Top := ARect^.Top;
Width := Min(ADesc.Width, ARect^.Right - ARect^.Left);
Height := Min(ADesc.Height, ARect^.Bottom - ARect^.Top);
end;
if cardinal(Width) <> ADesc.Width
then begin
{$ifdef RawimageConsistencyChecks}
RaiseGDBException('TGTKWidgetSet.RawImage_AddMask: Width <> RawImage.Description.Width');
{$else}
DebugLn('WARNING: TGTKWidgetSet.RawImage_AddMask: Width(=%d) <> RawImage.Description.Width(=%d)', [Width, ADesc.Width]);
{$endif}
Exit;
end;
if cardinal(Height) <> ADesc.Height
then begin
{$ifdef RawimageConsistencyChecks}
RaiseGDBException('TGTKWidgetSet.RawImage_AddMask: Height <> RawImage.Description.Height');
{$else}
DebugLn('WARNING: TGTKWidgetSet.RawImage_AddMask: Height(=%d) <> RawImage.Description.Height(=%d)', [Height, ADesc.Height]);
{$endif}
Exit;
end;
// get gdk_image from gdkbitmap
Image := gdk_image_get(AMask, Left, Top, Width, Height);
if Image = nil
then begin
DebugLn('WARNING: TGtkWidgetSet.RawImage_AddMask: gdk_image_get failed');
Exit;
end;
try
{$IFDEF VerboseRawImage}
DebugLn('TGtkWidgetSet.RawImage_AddMask: A BytesPerLine=',dbgs(Image^.bpl),
' theType=',dbgs({$IFDEF Gtk1}Image^.thetype{$ELSE}ord(Image^._type){$ENDIF}),
' depth=',dbgs(Image^.depth),' AnImage^.bpp=',dbgs(Image^.bpp));
DebugLn('RawImage=', ARawImage.Description.AsString);
{$ENDIF}
// See also GetWindowRawImageDescription
ADesc.MaskBitsPerPixel := GetGdkImageBitsPerPixel(Image);
ADesc.MaskLineEnd := rileByteBoundary;// gdk_bitmap_create_from_data expects rileByteBoundary
BytesPerLine := GetBytesPerLine(ADesc.Width, ADesc.MaskBitsPerPixel, ADesc.MaskLineEnd);
ARawImage.MaskSize := PtrUInt(BytesPerLine) * PtrUInt(Height);
ReAllocMem(ARawImage.Mask, ARawImage.MaskSize);
if ARawImage.MaskSize > 0
then begin
// copy data
if BytesPerLine = Image^.bpl
then begin
// we can copy all in one go
System.Move(Image^.Mem^, ARawImage.Mask^, ARawImage.MaskSize);
end
else begin
// copy line by line
SrcPtr := Image^.Mem;
DstPtr := ARawImage.Mask;
H := Height;
while H > 0 do
begin
System.Move(SrcPtr^, DstPtr^, BytesPerLine);
Inc(SrcPtr, Image^.bpl);
Inc(DstPtr, BytesPerLine);
Dec(H);
end;
end;
CheckGdkImageBitOrder(Image, ARawImage.Mask, ARawImage.MaskSize);
end;
{$IFDEF VerboseRawImage}
{DebugLn('TGtkWidgetSet.GetRawImageMaskFromGdkBitmap H ',
' Width=',dbgs(ARawImage.Description.Width),
' Height=',dbgs(ARawImage.Description.Height),
' AlphaBitsPerPixel=',dbgs(ARawImage.Description.AlphaBitsPerPixel),
' MaskSize=',dbgs(ARawImage.MaskSize));}
{$ENDIF}
finally
gdk_image_destroy(Image);
end;
Result:=true;
end;
{------------------------------------------------------------------------------
Function: TGtkWidgetSet.StretchCopyArea
Params: DestDC: The destination devicecontext
X, Y: The left/top corner of the destination rectangle
Width, Height: The size of the destination rectangle
SrcDC: The source devicecontext
XSrc, YSrc: The left/top corner of the source rectangle
SrcWidth, SrcHeight: The size of the source rectangle
Mask: An optional mask
XMask, YMask: Only used if Mask<>nil
Rop: The raster operation to be performed
Returns: True if succesful
The StretchBlt function copies a bitmap from a source rectangle into a
destination rectangle using the specified raster operation. If needed, it
resizes the bitmap to fit the dimensions of the destination rectangle.
Sizing is done according to the stretching mode currently set in the
destination device context.
If SrcDC contains a mask the pixmap will be copied with this transparency.
ToDo:
Mirroring
Extended NonDrawable support (Image, Bitmap, etc)
Scale mask
------------------------------------------------------------------------------}
function TGtkWidgetSet.StretchCopyArea(DestDC: HDC; X, Y, Width, Height: Integer;
SrcDC: HDC; XSrc, YSrc, SrcWidth, SrcHeight: Integer;
Mask: HBITMAP; XMask, YMask: Integer;
Rop: Cardinal): Boolean;
var
SrcDevContext: TGtkDeviceContext absolute SrcDC;
DstDevContext: TGtkDeviceContext absolute DestDC;
TempPixmap: PGdkPixmap;
TempMaskBitmap: PGdkBitmap;
SizeChange, ROpIsSpecial: Boolean;
FlipHorz, FlipVert: Boolean;
function ScaleAndROP(DestGC: PGDKGC;
Src: PGDKDrawable; SrcPixmap: PGdkDrawable; SrcMaskBitmap: PGdkBitmap): Boolean;
var
Depth: Integer;
ScaleMethod: TGdkInterpType;
ShrinkWidth, ShrinkHeight: Boolean;
GC: PGDKGC;
begin
{$IFDEF VerboseStretchCopyArea}
DebugLn('ScaleAndROP START DestGC=',DbgS(DestGC),
' SrcPixmap=',DbgS(SrcPixmap),
' SrcMaskPixmap=',DbgS(SrcMaskPixmap));
{$ENDIF}
Result := False;
if DestGC = nil
then begin
DebugLn('WARNING: [TGtkWidgetSet.StretchCopyArea] Uninitialized DestGC');
exit;
end;
// create a temporary graphic context for the scale and raster operations
// copy the destination GC values into the temporary GC
GC := gdk_gc_new(DstDevContext.Drawable);
gdk_gc_copy(GC, DestGC);
// clear any previous clipping in the temporary GC
gdk_gc_set_clip_region(GC, nil);
gdk_gc_set_clip_rectangle(GC, nil);
if SizeChange
then begin
{$IFDEF VerboseStretchCopyArea}
Depth:=gdk_visual_get_system^.Depth;
DebugLn('ScaleAndROP Scaling buffer: '+dbgs(Width),' x '+dbgs(Height),' x '+dbgs(Depth));
{$ENDIF}
// calculate ScaleMethod
{$IFDEF VerboseGtkToDos}{$note use SetStretchBltMode(dc, mode) here}{$ENDIF}
//GDKPixbuf Scaling is not done in the same way as Windows
//but by rights ScaleMethod should really be chosen based
//on the destination device's internal flag
{GDK_INTERP_NEAREST,GDK_INTERP_TILES,
GDK_INTERP_BILINEAR,GDK_INTERP_HYPER);}
ShrinkWidth := Width < SrcWidth;
ShrinkHeight := Height < SrcHeight;
if ShrinkWidth and ShrinkHeight
then ScaleMethod := GDK_INTERP_TILES
else
if ShrinkWidth or ShrinkHeight
then ScaleMethod := GDK_INTERP_BILINEAR//GDK_INTERP_HYPER
else ScaleMethod := GDK_INTERP_BILINEAR;
// Scale the src part to a temporary pixmap with the size of the
// destination rectangle
Result := ScalePixmapAndMask(GC, ScaleMethod,
SrcPixmap, XSrc, YSrc, SrcWidth, SrcHeight,
nil, SrcMaskBitmap,
Width, Height, FlipHorz, FlipVert, TempPixmap, TempMaskBitmap);
if not Result
then DebugLn('WARNING: ScaleAndROP ScalePixmap for pixmap failed');
end
else begin
if ROpIsSpecial
then begin
// no scaling, but special ROp
Depth:=gdk_visual_get_system^.Depth;
{$IFDEF VerboseStretchCopyArea}
DebugLn('ScaleAndROP Creating rop buffer: '+dbgs(Width),' x '+dbgs(Height),' x '+dbgs(Depth));
{$ENDIF}
TempPixmap := gdk_pixmap_new(nil,SrcWidth,SrcHeight,Depth);
gdk_window_copy_area(TempPixmap, GC, 0, 0,
Src, XSrc, YSrc, SrcWidth, SrcHeight);
end;
Result := True;
end;
// set raster operation in the destination GC
if Result
then SetGCRasterOperation(DestGC, ROP);
gdk_gc_unref(GC);
end;
procedure ROPFillBuffer(DC : hDC);
var
OldCurrentBrush: PGdiObject;
Brush : hBrush;
begin
if TempPixmap = nil then exit;
if not ((ROp=WHITENESS) or (ROp=BLACKNESS) or (ROp=DSTINVERT)) then Exit;
{$IFDEF VerboseStretchCopyArea}
DebugLn('ROPFillBuffer ROp='+dbgs(ROp));
{$ENDIF}
with TGtkDeviceContext(DC) do
begin
// Temporarily hold the old brush to
// replace it with the given brush
OldCurrentBrush := CurrentBrush;
if ROP = WHITENESS
then
Brush := GetStockObject(WHITE_BRUSH)
else
Brush := GetStockObject(BLACK_BRUSH);
CurrentBrush := PGdiObject(Brush);
SelectedColors := dcscBrush;
if not IsNullBrush
then begin
gdk_draw_rectangle(TempPixmap, GC, 1, 0, 0, Width, Height);
end;
// Restore current brush
CurrentBrush := OldCurrentBrush;
end;
end;
function SrcDevBitmapToDrawable: Boolean;
var
SrcDrawable: PGdkDrawable;
MskBitmap: PGdkBitmap;
ClipMask: PGdkBitmap;
SrcGDIBitmap: PGdiObject;
begin
Result:=true;
{$IFDEF VerboseStretchCopyArea}
DebugLn('SrcDevBitmapToDrawable Start');
{$ENDIF}
SrcGDIBitmap := SrcDevContext.CurrentBitmap;
if SrcGDIBitmap = nil
then begin
SrcDrawable := SrcDevContext.Drawable;
MskBitmap := nil;
if SrcDrawable = nil then
begin
DebugLn('SrcDevBitmapToDrawable NOTE: SrcDevContext.CurrentBitmap=nil, SrcDevContext.Drawable = nil');
exit;
end;
end
else begin
SrcDrawable := SrcGDIBitmap^.GDIPixmapObject.Image;
MskBitmap := CreateGdkMaskBitmap(HBITMAP(PtrUInt(SrcGDIBitmap)), Mask);
end;
{$IFDEF VerboseStretchCopyArea}
DebugLn('SrcDevBitmapToDrawable SrcPixmap=[',GetWindowDebugReport(SrcDrawable),']',
' MaskPixmap=[',GetWindowDebugReport(MskBitmap),']');
{$ENDIF}
if (MskBitmap = nil) and (not SizeChange) and (ROP=SRCCOPY)
then begin
// simply copy the area
{$IFDEF VerboseStretchCopyArea}
DebugLn('SrcDevBitmapToDrawable Simple copy');
{$ENDIF}
gdk_gc_set_function(DstDevContext.GC, GDK_COPY);
gdk_window_copy_area(DstDevContext.Drawable, DstDevContext.GC, X, Y,
SrcDrawable, XSrc, YSrc, Width, Height);
gdk_gc_set_function(DstDevContext.GC, DstDevContext.GetFunction);
Exit;
end;
// perform raster operation and scaling into Scale and fGC
DstDevContext.SelectedColors := dcscCustom;
if not ScaleAndROP(DstDevContext.GC, SrcDevContext.Drawable, SrcDrawable, MskBitmap)
then begin
DebugLn('WARNING: SrcDevBitmapToDrawable: ScaleAndROP failed');
Exit;
end;
{$IFDEF VerboseStretchCopyArea}
DebugLn('SrcDevBitmapToDrawable TempPixmap=',DbgS(TempPixmap),' TempMaskPixmap=',DbgS(TempMaskBitmap));
{$ENDIF}
if TempPixmap <> nil
then begin
SrcDrawable := TempPixmap;
XSrc := 0;
YSrc := 0;
SrcWidth := Width;
SrcHeight := Height;
end;
if TempMaskBitmap <> nil
then begin
MskBitmap := TempMaskBitmap;
XMask := 0;
YMask := 0;
end;
case ROP of
WHITENESS, BLACKNESS :
ROPFillBuffer(DestDC);
end;
{$IFDEF VerboseStretchCopyArea}
DebugLn('SrcDevBitmapToDrawable ',
' SrcPixmap=',DbgS(SrcPixmap),
' XSrc='+dbgs(XSrc),' YSrc='+dbgs(YSrc),' SrcWidth='+dbgs(SrcWidth),' SrcHeight='+dbgs(SrcHeight),
' MaskPixmap=',DbgS(MaskPixmap),
' XMask='+dbgs(XMask),' YMask='+dbgs(YMask),
'');
{$ENDIF}
// set clipping mask for transparency
MergeClipping(DstDevContext, DstDevContext.GC, X, Y, Width, Height,
MskBitmap, XMask, YMask, ClipMask);
// draw image
{$IFDEF DebugGDK}BeginGDKErrorTrap;{$ENDIF}
gdk_window_copy_area(DstDevContext.Drawable, DstDevContext.GC, X, Y,
SrcDrawable, XSrc, YSrc, SrcWidth, SrcHeight);
{$IFDEF DebugGDK}EndGDKErrorTrap;{$ENDIF}
// unset clipping mask for transparency
DstDevContext.ResetGCClipping;
if ClipMask <> nil
then gdk_bitmap_unref(ClipMask);
// restore raster operation to SRCCOPY
gdk_gc_set_function(DstDevContext.GC, GDK_Copy);
Result:=True;
end;
function DrawableToDrawable: Boolean;
begin
{$IFDEF VerboseStretchCopyArea}
DebugLn('DrawableToDrawable Start');
{$ENDIF}
Result:=SrcDevBitmapToDrawable;
end;
function PixmapToDrawable: Boolean;
begin
{$IFDEF VerboseStretchCopyArea}
DebugLn('PixmapToDrawable Start');
{$ENDIF}
Result:=SrcDevBitmapToDrawable;
end;
function PixmapToBitmap: Boolean;
begin
DebugLn('WARNING: [TGtkWidgetSet.StretchCopyArea] PixmapToBitmap unimplemented!');
Result:=false;
end;
function BitmapToPixmap: Boolean;
begin
DebugLn('WARNING: [TGtkWidgetSet.StretchCopyArea] BitmapToPixmap unimplemented!');
Result:=false;
end;
function Unsupported: Boolean;
begin
DebugLn('WARNING: [TGtkWidgetSet.StretchCopyArea] Destination and/or Source unsupported!!');
Result:=false;
end;
//----------
function NoDrawableToNoDrawable: Boolean;
begin
Result := Unsupported;
if SrcDevContext.CurrentBitmap = nil then Exit;
if DstDevContext.CurrentBitmap = nil then Exit;
case SrcDevContext.CurrentBitmap^.GDIBitmapType of
gbBitmap:
case DstDevContext.CurrentBitmap^.GDIBitmapType of
gbBitmap: Result:=DrawableToDrawable;
gbPixmap: Result:=BitmapToPixmap;
end;
gbPixmap:
case DstDevContext.CurrentBitmap^.GDIBitmapType of
gbBitmap: Result:=PixmapToBitmap;
gbPixmap: Result:=DrawableToDrawable;
end;
end;
end;
function NoDrawableToDrawable: Boolean;
begin
Result := Unsupported;
if SrcDevContext.CurrentBitmap = nil then Exit;
case SrcDevContext.CurrentBitmap^.GDIBitmapType of
gbBitmap: Result:=PixmapToDrawable;
gbPixmap: Result:=PixmapToDrawable;
end;
end;
function DrawableToNoDrawable: Boolean;
begin
Result := Unsupported;
if DstDevContext.CurrentBitmap = nil then Exit;
case DstDevContext.CurrentBitmap^.GDIBitmapType of
gbBitmap: Result:=Unsupported;
gbPixmap: Result:=Unsupported;
end;
end;
procedure RaiseSrcDrawableNil;
begin
DebugLn(['RaiseSrcDrawableNil ',GetWidgetDebugReport(SrcDevContext.Widget)]);
RaiseGDBException(Format('TGtkWidgetSet.StretchCopyArea SrcDC=%p Drawable=nil', [Pointer(SrcDevContext)]));
end;
procedure RaiseDestDrawableNil;
begin
RaiseGDBException(Format('TGtkWidgetSet.StretchCopyArea DestDC=%p Drawable=nil', [Pointer(DstDevContext)]));
end;
var
NewSrcWidth: Integer;
NewSrcHeight: Integer;
NewWidth: Integer;
NewHeight: Integer;
SrcDCOrigin: TPoint;
DstDCOrigin: TPoint;
SrcWholeWidth, SrcWholeHeight: integer;
DstWholeWidth, DstWholeHeight: integer;
begin
Result := IsValidDC(DestDC) and IsValidDC(SrcDC);
{$IFDEF VerboseStretchCopyArea}
DebugLn('StretchCopyArea Start '+dbgs(Result));
{$ENDIF}
if not Result then Exit;
if SrcDevContext.HasTransf then
begin
// TK: later with shear and rotation error here?
SrcDevContext.TransfPoint(XSrc, YSrc);
SrcDevContext.TransfExtent(SrcWidth, SrcHeight);
end;
if DstDevContext.HasTransf then
begin
// TK: later with shear and rotation error here?
DstDevContext.TransfPoint(X, Y);
DstDevContext.TransfExtent(Width, Height);
end;
FlipHorz := Width < 0;
if FlipHorz then
begin
Width := -Width;
X := X - Width;
end;
FlipVert := Height < 0;
if FlipVert then
begin
Height := -Height;
Y := Y - Height;
end;
if (Width = 0) or (Height = 0) then exit;
if (SrcWidth = 0) or (SrcHeight = 0) then exit;
SizeChange := (Width <> SrcWidth) or (Height <> SrcHeight) or FlipVert or FlipHorz;
ROpIsSpecial := (Rop <> SRCCOPY);
SrcDCOrigin := SrcDevContext.Offset;
Inc(XSrc, SrcDCOrigin.X);
Inc(YSrc, SrcDCOrigin.Y);
if SrcDevContext.Drawable = nil then RaiseSrcDrawableNil;
gdk_window_get_size(PGdkWindow(SrcDevContext.Drawable), @SrcWholeWidth, @SrcWholeHeight);
DstDCOrigin := DstDevContext.Offset;
Inc(X, DstDCOrigin.X);
Inc(Y, DstDCOrigin.Y);
if DstDevContext.Drawable = nil then RaiseDestDrawableNil;
gdk_window_get_size(PGdkWindow(DstDevContext.Drawable), @DstWholeWidth, @DstWholeHeight);
{$IFDEF VerboseStretchCopyArea}
DebugLn('TGtkWidgetSet.StretchCopyArea BEFORE CLIPPING X='+dbgs(X),' Y='+dbgs(Y),' Width='+dbgs(Width),' Height='+dbgs(Height),
' XSrc='+dbgs(XSrc)+' YSrc='+dbgs(YSrc)+' SrcWidth='+dbgs(SrcWidth)+' SrcHeight='+dbgs(SrcHeight),
' SrcDrawable=',DbgS(TGtkDeviceContext(SrcDC).Drawable),
' SrcOrigin='+dbgs(SrcDCOrigin),
' DestDrawable='+DbgS(TGtkDeviceContext(DestDC).Drawable),
' DestOrigin='+dbgs(DestDCOrigin),
' Mask='+DbgS(Mask)+' XMask='+dbgs(XMask)+' YMask='+dbgs(YMask),
' SizeChange='+dbgs(SizeChange)+' ROpIsSpecial='+dbgs(ROpIsSpecial),
' DestWhole='+dbgs(DestWholeWidth)+','+dbgs(DestWholeHeight),
' SrcWhole='+dbgs(SrcWholeWidth)+','+dbgs(SrcWholeHeight),
'');
{$ENDIF}
{$IFDEF VerboseGtkToDos}{$note use intersectrect here}{$ENDIF}
if X >= DstWholeWidth then Exit;
if Y >= DstWholeHeight then exit;
if X + Width <= 0 then exit;
if Y + Height <=0 then exit;
if XSrc >= SrcWholeWidth then Exit;
if YSrc >= SrcWholeHeight then exit;
if XSrc + SrcWidth <= 0 then exit;
if YSrc + SrcHeight <=0 then exit;
// gdk does not allow copying areas, party laying out of bounds
// -> clip
// clip src to the left
if (XSrc<0) then begin
NewSrcWidth:=SrcWidth+XSrc;
NewWidth:=((Width*NewSrcWidth) div SrcWidth);
{$IFDEF VerboseStretchCopyArea}
DebugLn('StretchCopyArea Cliping Src to left NewSrcWidth='+dbgs(NewSrcWidth),' NewWidth='+dbgs(NewWidth));
{$ENDIF}
if NewWidth = 0 then exit;
inc(X, Width-NewWidth);
if X >= DstWholeWidth then exit;
XSrc:=0;
SrcWidth := NewSrcWidth;
end;
// clip src to the top
if (YSrc<0) then begin
NewSrcHeight:=SrcHeight+YSrc;
NewHeight:=((Height*NewSrcHeight) div SrcHeight);
{$IFDEF VerboseStretchCopyArea}
DebugLn('StretchCopyArea Cliping Src to top NewSrcHeight='+dbgs(NewSrcHeight),' NewHeight='+dbgs(NewHeight));
{$ENDIF}
if NewHeight = 0 then exit;
inc(Y, Height - NewHeight);
if Y >= DstWholeHeight then exit;
YSrc:=0;
SrcHeight := NewSrcHeight;
end;
// clip src to the right
if (XSrc+SrcWidth>SrcWholeWidth) then begin
NewSrcWidth:=SrcWholeWidth-XSrc;
Width:=((Width*NewSrcWidth) div SrcWidth);
{$IFDEF VerboseStretchCopyArea}
DebugLn('StretchCopyArea Cliping Src to right NewSrcWidth='+dbgs(NewSrcWidth),' NewWidth='+dbgs(Width));
{$ENDIF}
if (Width=0) then exit;
if (X+Width<=0) then exit;
SrcWidth:=NewSrcWidth;
end;
// clip src to the bottom
if (YSrc+SrcHeight>SrcWholeHeight) then begin
NewSrcHeight:=SrcWholeHeight-YSrc;
Height:=((Height*NewSrcHeight) div SrcHeight);
{$IFDEF VerboseStretchCopyArea}
DebugLn('StretchCopyArea Cliping Src to bottom NewSrcHeight='+dbgs(NewSrcHeight),' NewHeight='+dbgs(Height));
{$ENDIF}
if (Height=0) then exit;
if (Y+Height<=0) then exit;
SrcHeight:=NewSrcHeight;
end;
if Mask = 0
then begin
XMask := XSrc;
YMask := YSrc;
end;
// mark temporary scaling/rop buffers as uninitialized
TempPixmap := nil;
TempMaskBitmap := nil;
{$IFDEF VerboseStretchCopyArea}
write('TGtkWidgetSet.StretchCopyArea AFTER CLIPPING X='+dbgs(X)+' Y='+dbgs(Y)+' Width='+dbgs(Width)+' Height='+dbgs(Height),
' XSrc='+dbgs(XSrc),' YSrc='+dbgs(YSrc)+' SrcWidth='+dbgs(SrcWidth)+' SrcHeight='+dbgs(SrcHeight),
' SrcDrawable='+DbgS(SrcDevContext.Drawable),
' DestDrawable='+DbgS(DstDevContext.Drawable),
' Mask='+DbgS(Mask)+' XMask='+dbgs(XMask)+' YMask='+dbgs(YMask),
' SizeChange='+dbgs(SizeChange)+' ROpIsSpecial='+dbgs(ROpIsSpecial));
write(' ROp=');
case ROp of
SRCCOPY : DebugLn('SRCCOPY');
SRCPAINT : DebugLn('SRCPAINT');
SRCAND : DebugLn('SRCAND');
SRCINVERT : DebugLn('SRCINVERT');
SRCERASE : DebugLn('SRCERASE');
NOTSRCCOPY : DebugLn('NOTSRCCOPY');
NOTSRCERASE : DebugLn('NOTSRCERASE');
MERGECOPY : DebugLn('MERGECOPY');
MERGEPAINT : DebugLn('MERGEPAINT');
PATCOPY : DebugLn('PATCOPY');
PATPAINT : DebugLn('PATPAINT');
PATINVERT : DebugLn('PATINVERT');
DSTINVERT : DebugLn('DSTINVERT');
BLACKNESS : DebugLn('BLACKNESS');
WHITENESS : DebugLn('WHITENESS');
else
DebugLn('???');
end;
{$ENDIF}
{$IFDEF VerboseGtkToDos}{$note tode remove, earlier checks require drawable <> nil}{$ENDIF}
if SrcDevContext.Drawable = nil
then begin
if DstDevContext.Drawable = nil
then
Result := NoDrawableToNoDrawable
else
Result := NoDrawableToDrawable;
end
else begin
if DstDevContext.Drawable = nil
then
Result := DrawableToNoDrawable
else
Result := DrawableToDrawable;
end;
if TempPixmap <> nil
then gdk_pixmap_unref(TempPixmap);
if TempMaskBitmap <> nil
then gdk_pixmap_unref(TempMaskBitmap);
end;
{------------------------------------------------------------------------------
procedure TGtkWidgetSet.SetSelectionMode(Sender: TObject; Widget: PGtkWidget;
MultiSelect, ExtendedSelect: boolean);
------------------------------------------------------------------------------}
procedure TGtkWidgetSet.SetSelectionMode(Sender: TObject; Widget: PGtkWidget;
MultiSelect, ExtendedSelect: boolean);
var
AControl: TWinControl;
SelectionMode: TGtkSelectionMode;
GtkList: PGtkList;
begin
AControl:=TWinControl(Sender);
if (AControl is TWinControl) and
(AControl.fCompStyle in [csListBox, csCheckListBox]) then
begin
if MultiSelect then
begin
if ExtendedSelect
then SelectionMode:= GTK_SELECTION_EXTENDED
else SelectionMode:= GTK_SELECTION_MULTIPLE;
end
else
begin
SelectionMode:= GTK_SELECTION_BROWSE;
end;
GtkList:=PGtkList(GetWidgetInfo(Widget, True)^.CoreWidget);
if (GtkList^.selection=nil)
and (SelectionMode=GTK_SELECTION_BROWSE) then
SelectionMode:=GTK_SELECTION_SINGLE;
gtk_list_set_selection_mode(GtkList,SelectionMode);
end;
end;
{------------------------------------------------------------------------------
procedure TGtkWidgetSet.BringFormToFront(Sender: TObject);
------------------------------------------------------------------------------}
procedure TGtkWidgetSet.BringFormToFront(Sender: TObject);
var
AWindow: PGdkWindow;
Widget: PGtkWidget;
begin
Widget := PgtkWidget(TCustomForm(Sender).Handle);
AWindow:=GetControlWindow(Widget);
if AWindow<>nil then begin
gdk_window_raise(AWindow);
end;
end;
procedure TGtkWidgetSet.SetDesigning(AComponent: TComponent);
{var
AWinControl: TWinControl absolute AComponent;
}
begin
// change cursor
{
Paul Ishenin:
this will never happen
if (AComponent is TWinControl) and (AWinControl.HandleAllocated) then
TGtkWSWinControl(AWinControl.WidgetSetClass).SetCursor(AWinControl, Screen.Cursors[crDefault]);
}
end;
{------------------------------------------------------------------------------
Method: TGtkWidgetSet.ResizeChild
Params: sender - the object which invoked this function
Left,Top,Width,Height - new dimensions for the control
Returns: Nothing
*Note: Resize a child widget on the parents fixed widget
------------------------------------------------------------------------------}
procedure TGtkWidgetSet.ResizeChild(Sender : TObject;
Left, Top, Width, Height : Integer);
var
LCLControl: TWinControl;
begin
//DebugLn('[TGtkWidgetSet.ResizeChild] START ',TControl(Sender).Name,':',Sender.Classname,' Left=',Left,' Top=',Top,' Width=',Width,' Height=',Height);
//DebugLn((Format('trace: [TGtkWidgetSet.ResizeChild] %s --> Resize', [Sender.ClassNAme])));
if Sender is TWinControl then begin
LCLControl:=TWinControl(Sender);
if LCLControl.HandleAllocated then begin
ResizeHandle(LCLControl);
//if (Sender is TCustomForm) then
//if CompareText(Sender.ClassName,'TScrollBar')=0 then
// DebugLn(' FFF ResizeChild ',Sender.ClassName,' ',Left,',',Top,',',Width,',',Height);
end;
end;
//DebugLn('[TGtkWidgetSet.ResizeChild] END ',Sender.Classname,' Left=',Left,' Top=',Top,' Width=',Width,' Height=',Height);
end;
{------------------------------------------------------------------------------
Function: TGtkWidgetSet.SetCallbackEx
Params: AMsg - message for which to set a callback
AGTKObject - object to which callback will be send
ALCLObject - for compatebility reasons provided, will be used when
AGTKObject = nil
Direct - true: connect the signal to the AGTKObject
false: choose smart what gtkobject to use
Returns: nothing
Applies a Message to the sender
------------------------------------------------------------------------------}
//TODO: remove ALCLObject when creation splitup is finished
procedure TGtkWidgetSet.SetCallbackEx(const AMsg: LongInt;
const AGTKObject: PGTKObject; const ALCLObject: TObject; Direct: boolean);
procedure ConnectSenderSignal(const AnObject:PGTKObject; const ASignal: PChar;
const ACallBackProc: Pointer);
begin
ConnectSignal(AnObject,ASignal,ACallBackProc,ALCLObject);
end;
procedure ConnectSenderSignalAfter(const AnObject:PGTKObject;
const ASignal: PChar; const ACallBackProc: Pointer);
begin
ConnectSignalAfter(AnObject,ASignal,ACallBackProc,ALCLObject);
end;
procedure ConnectSenderSignal(const AnObject:PGTKObject; const ASignal: PChar;
const ACallBackProc: Pointer; const AReqSignalMask: TGdkEventMask);
begin
ConnectSignal(AnObject,ASignal,ACallBackProc,ALCLObject, AReqSignalMask);
end;
procedure ConnectSenderSignalAfter(const AnObject:PGTKObject;
const ASignal: PChar; const ACallBackProc: Pointer;
const AReqSignalMask: TGdkEventMask);
begin
ConnectSignalAfter(AnObject,ASignal,ACallBackProc,ALCLObject,
AReqSignalMask);
end;
procedure ConnectFocusEvents(const AnObject: PGTKObject);
begin
ConnectSenderSignal(AnObject, 'focus-in-event', @gtkFocusCB);
ConnectSenderSignalAfter(AnObject, 'focus-in-event', @gtkFocusCBAfter);
ConnectSenderSignal(AnObject, 'focus-out-event', @gtkKillFocusCB);
ConnectSenderSignalAfter(AnObject, 'focus-out-event', @gtkKillFocusCBAfter);
end;
procedure ConnectKeyPressReleaseEvents(const AnObject: PGTKObject);
begin
//debugln('ConnectKeyPressReleaseEvents A ALCLObject=',DbgSName(ALCLObject));
ConnectSenderSignal(AnObject,
'key-press-event', @GTKKeyPress, GDK_KEY_PRESS_MASK);
ConnectSenderSignalAfter(AnObject,
'key-press-event', @GTKKeyPressAfter, GDK_KEY_PRESS_MASK);
ConnectSenderSignal(AnObject,
'key-release-event', @GTKKeyRelease, GDK_KEY_RELEASE_MASK);
ConnectSenderSignalAfter(AnObject,
'key-release-event', @GTKKeyReleaseAfter, GDK_KEY_RELEASE_MASK);
end;
function GetAdjustment(const gObject: PGTKObject; vertical: boolean):PGtkObject;
var
Scroll: PGtkObject;
begin
if Vertical then begin
if ALCLObject is TScrollBar then
result := PGtkObject(PgtkhScrollBar(gObject)^.Scrollbar.Range.Adjustment)
else if (ALCLObject is TScrollBox)
or (ALCLObject is TCustomForm)
or (ALCLObject is TCustomFrame)
then begin
Scroll := gtk_object_get_data(gObject, odnScrollArea);
Result := PGtkObject(gtk_scrolled_window_get_vadjustment(
PGTKScrolledWindow(Scroll)));
end
else if GtkWidgetIsA(PGtkWidget(gObject),gtk_scrolled_window_get_type) then
begin
Result := PGtkObject(gtk_scrolled_window_get_vadjustment(
PGTKScrolledWindow(gObject)))
end else
DebugLn(['TGtkWidgetSet.SetCallbackEx.GetAdjustment WARNING: invalid widget: ',GetWidgetDebugReport(PGtkWidget(gObject))]);
end else begin
if ALCLObject is TScrollBar then
Result := PgtkObject(PgtkhScrollBar(gObject)^.Scrollbar.Range.Adjustment)
else if (ALCLObject is TScrollBox)
or (ALCLObject is TCustomForm)
or (ALCLObject is TCustomFrame)
then begin
Scroll := gtk_object_get_data(gObject, odnScrollArea);
Result := PgtkObject(gtk_scrolled_window_get_hadjustment(
PGTKScrolledWindow(Scroll)));
end
else if GtkWidgetIsA(PGtkWidget(gObject),gtk_scrolled_window_get_type) then
begin
//DebugLn(['GetAdjustment ',GetWidgetDebugReport(PGtkWidget(gObject))]);
Result := PgtkObject(gtk_scrolled_window_get_hadjustment(
PGTKScrolledWindow(gObject)));
end else
DebugLn(['TGtkWidgetSet.SetCallbackEx.GetAdjustment WARNING: invalid widget: ',GetWidgetDebugReport(PGtkWidget(gObject))]);
end;
end;
var
gObject, gFixed, gCore, Adjustment: PGTKObject;
{$IFDEF GTK2}
gTemp: PGTKObject;
{$ENDIF}
Info: PWidgetInfo;
gMain: PGtkObject;
gMouse: PGtkObject;
begin
//debugln('TGtkWidgetSet.SetCallback A ALCLObject=',DbgSName(ALCLObject),' AMsg=',dbgs(AMsg));
if Direct then
begin
gMain := AGTKObject;
gCore := AGTKObject;
gFixed := AGTKObject;
gMouse := AGTKObject;
gObject := AGTKObject;
end
else
begin
// gObject
if AGTKObject = nil then gObject := ObjectToGTKObject(ALCLObject)
else gObject := AGTKObject;
if gObject = nil then Exit;
Info:=GetWidgetInfo(gObject, True);
// gFixed is the widget with the client area (e.g. TGroupBox, TCustomForm have this)
gFixed := PGTKObject(GetFixedWidget(gObject));
if gFixed = nil then
gFixed := gObject;
// gCore is the working widget (e.g. TListBox has a scrolling widget (=main widget) and a tree widget (=core widget))
gCore:=PGtkObject(Info^.CoreWidget);
gMain:=GetMainWidget(gObject);
if (gMain=nil) then
gMain:=gObject;
if (gMain<>gObject) then
DebugLn(['TGtkWidgetSet.SetCallback WARNING: gObject<>MainWidget ',DbgSName(ALCLObject)]);
if (gFixed <> gMain) then
gMouse := gFixed
else
gMouse := gCore;
if gMouse=nil then
DebugLn(['TGtkWidgetSet.SetCallback WARNING: gMouseWidget=nil ',DbgSName(ALCLObject)]);
{$IFDEF GTK1}
if ALCLObject is TCustomListBox then
gMouse:=gMain;
{$ELSE}
if GTK_IS_FIXED(gMouse) and GTK_WIDGET_NO_WINDOW(gMouse) then
begin
gTemp := PGtkObject(gtk_widget_get_parent(PGtkWidget(gMouse)));
//DebugLn(gtk_type_name(g_object_type(gMouse)) + ' => ' + gtk_type_name(g_object_type(gTemp)));
if GTK_IS_EVENT_BOX(gTemp) then
gMouse := gTemp;
end;
{$ENDIF}
end;
//DebugLn(['TGtkWidgetSet.SetCallbackSmart MouseWidget=',GetWidgetDebugReport(PGtkWidget(gMouse))]);
case AMsg of
LM_SHOWWINDOW :
begin
ConnectSenderSignal(gObject, 'show', @gtkshowCB);
ConnectSenderSignal(gObject, 'hide', @gtkhideCB);
end;
LM_DESTROY :
begin
//DebugLn(['TGtkWidgetSet.SetCallback ',DbgSName(ALCLObject)]);
ConnectSenderSignal(gObject, 'destroy', @gtkdestroyCB);
end;
LM_CLOSEQUERY :
begin
ConnectSenderSignal(gObject, 'delete-event', @gtkdeleteCB);
end;
LM_ACTIVATE :
begin
if (ALCLObject is TCustomForm) and (TCustomForm(ALCLObject).Parent=nil)
then begin
ConnectSenderSignalAfter(gObject, 'focus-in-event', @gtkfrmactivateAfter);
ConnectSenderSignalAfter(gObject, 'focus-out-event', @gtkfrmdeactivateAfter);
end else if ALCLObject is TCustomMemo then
ConnectSenderSignal(gCore, 'activate', @gtkactivateCB)
else
ConnectSenderSignal(gObject, 'activate', @gtkactivateCB);
end;
LM_ACTIVATEITEM :
begin
ConnectSenderSignal(gObject, 'activate-item', @gtkactivateCB);
end;
LM_CHANGED :
begin
if ALCLObject is TCustomTrackBar then
begin
ConnectSenderSignal(gtk_Object(
gtk_range_get_adjustment(GTK_RANGE(gObject))) ,
'value_changed', @gtkvaluechanged);
end
else
if ALCLObject is TCustomMemo then
ConnectSenderSignal(gCore, 'changed', @gtkchanged_editbox)
else if ALCLObject is TCustomCheckbox then
begin
ConnectSenderSignal(gObject, 'toggled', @gtktoggledCB)
end else
begin
{$IFDEF VerboseTWinControlRealText}
ConnectSenderSignalAfter(gObject, 'changed', @gtkchanged_editbox);
{$ELSE}
ConnectSenderSignal(gObject, 'changed', @gtkchanged_editbox);
{$ENDIF}
end;
end;
LM_CLICKED:
begin
ConnectSenderSignal(gObject, 'clicked', @gtkclickedCB);
end;
LM_CONFIGUREEVENT :
begin
ConnectSenderSignal(gObject, 'configure-event', @gtkconfigureevent);
end;
LM_DAYCHANGED : //calendar
Begin
ConnectSenderSignal(gCore, 'day-selected', @gtkdaychanged);
ConnectSenderSignal(gCore, 'day-selected-double-click', @gtkdaychanged);
end;
LM_PAINT :
begin
//DebugLn(['TGtkWidgetSet.SetCallback ',DbgSName(ALCLObject),' ',GetWidgetDebugReport(PGtkWIdget(gfixed))]);
{$Ifdef GTK1}
//ConnectSenderSignal(gFixed, 'draw', @gtkDrawCB);
ConnectSenderSignalAfter(gFixed, 'draw', @gtkDrawAfterCB);
{$EndIf}
{$Ifdef GTK2}
ConnectSenderSignal(gFixed,'expose-event', @GTKExposeEvent);
ConnectSenderSignalAfter(gFixed,'style-set', @GTKStyleChangedAfter);
{$EndIf}
ConnectSenderSignalAfter(gFixed,'expose-event', @GTKExposeEventAfter);
ConnectSenderSignal(gFixed,'style-set', @GTKStyleChanged);
end;
{$IFDEF GTK1}
LM_FOCUS :
begin
if (ALCLObject is TCustomComboBox) then begin
ConnectFocusEvents(PgtkObject(PgtkCombo(gObject)^.entry));
ConnectFocusEvents(PgtkObject(PgtkCombo(gObject)^.list));
end else
begin
ConnectFocusEvents(gCore);
end;
end;
LM_GRABFOCUS:
begin
ConnectSenderSignal(gObject, 'grab_focus', @gtkActivateCB);
end;
LM_KEYDOWN,
LM_CHAR,
LM_KEYUP,
LM_SYSKEYDOWN,
LM_SYSCHAR,
LM_SYSKEYUP:
begin
//debugln('TGtkWidgetSet.SetCallback A KEY ALCLObject=',DbgSName(ALCLObject),' AMsg=',dbgs(AMsg));
if (ALCLObject is TCustomComboBox) then begin
ConnectKeyPressReleaseEvents(PgtkObject(PgtkCombo(gObject)^.entry));
end
else
if (ALCLObject is TCustomForm) then begin
ConnectKeyPressReleaseEvents(gObject);
end;
ConnectKeyPressReleaseEvents(gCore);
end;
{$ENDIF}
LM_MONTHCHANGED: //calendar
Begin
ConnectSenderSignal(gCore, 'month-changed', @gtkmonthchanged);
ConnectSenderSignal(gCore, 'prev-month', @gtkmonthchanged);
ConnectSenderSignal(gCore, 'next-month', @gtkmonthchanged);
end;
LM_MOUSEMOVE:
begin
{$IFDEF GTK1}
if (ALCLObject is TCustomComboBox) then
begin
ConnectSenderSignal(PgtkObject(PgtkCombo(gObject)^.entry),
'motion-notify-event',
@GTKMotionNotify, GDK_POINTER_MOTION_MASK);
ConnectSenderSignalAfter(PgtkObject(PgtkCombo(gObject)^.entry),
'motion-notify-event',
@GTKMotionNotifyAfter, GDK_POINTER_MOTION_MASK);
ConnectSenderSignal(PgtkObject(PgtkCombo(gObject)^.button),
'motion-notify-event',
@GTKMotionNotify, GDK_POINTER_MOTION_MASK);
ConnectSenderSignalAfter(PgtkObject(PgtkCombo(gObject)^.button),
'motion-notify-event',
@GTKMotionNotifyAfter, GDK_POINTER_MOTION_MASK);
end
else
{$ENDIF}
begin
ConnectSenderSignal(gMouse, 'motion-notify-event', @GTKMotionNotify,
GDK_POINTER_MOTION_MASK);
ConnectSenderSignalAfter(gMouse, 'motion-notify-event',
@GTKMotionNotifyAfter, GDK_POINTER_MOTION_MASK);
end;
end;
LM_LBUTTONDOWN,
LM_RBUTTONDOWN,
LM_MBUTTONDOWN,
LM_MOUSEWHEEL,
LM_MOUSEHWHEEL:
begin
{$IFDEF GTK1}
if (ALCLObject is TCustomComboBox) then
begin
ConnectSenderSignal(PgtkObject(PgtkCombo(gObject)^.entry),
'button-press-event', @gtkMouseBtnPress, GDK_BUTTON_PRESS_MASK);
ConnectSenderSignalAfter(PgtkObject(PgtkCombo(gObject)^.entry),
'button-press-event', @gtkMouseBtnPressAfter,
GDK_BUTTON_PRESS_MASK);
ConnectSenderSignal(PgtkObject(PgtkCombo(gObject)^.button) ,
'button-press-event', @gtkMouseBtnPress, GDK_BUTTON_PRESS_MASK);
ConnectSenderSignalAfter(PgtkObject(PgtkCombo(gObject)^.button) ,
'button-press-event', @gtkMouseBtnPressAfter, GDK_BUTTON_PRESS_MASK);
// Connecting the list seems to cause errors. Maybe we are returning the
// wrong boolean in the callback func
// ConnectSenderSignal(PgtkObject(PgtkCOmbo(gObject)^.list),
// 'button-press-event', @gtkMouseBtnPress, GDK_BUTTON_PRESS_MASK);
end
else
{$ENDIF}
begin
ConnectSenderSignal(gMouse, 'button-press-event', @gtkMouseBtnPress,
GDK_BUTTON_PRESS_MASK);
ConnectSenderSignalAfter(gMouse, 'button-press-event',
@gtkMouseBtnPressAfter, GDK_BUTTON_PRESS_MASK);
end;
end;
LM_LBUTTONUP,
LM_RBUTTONUP,
LM_MBUTTONUP:
begin
{$IFDEF GTK1}
if (ALCLObject is TCustomComboBox) then
begin
ConnectSenderSignal(PgtkObject(PgtkCombo(gObject)^.entry),
'button-release-event', @gtkMouseBtnRelease, GDK_BUTTON_RELEASE_MASK);
ConnectSenderSignalAfter(PgtkObject(PgtkCombo(gObject)^.entry),
'button-release-event', @gtkMouseBtnReleaseAfter,
GDK_BUTTON_RELEASE_MASK);
ConnectSenderSignal(PgtkObject(PgtkCombo(gObject)^.button) ,
'button-release-event', @gtkMouseBtnRelease, GDK_BUTTON_RELEASE_MASK);
ConnectSenderSignalAfter(PgtkObject(PgtkCombo(gObject)^.button) ,
'button-release-event', @gtkMouseBtnReleaseAfter,
GDK_BUTTON_RELEASE_MASK);
// Connecting the list seems to cause errors. Maybe we are returning the
// wrong boolean in the callback func
// ConnectSenderSignal(PgtkObject(PgtkCombo(gObject)^.list),
// 'button-release-event', @gtkMouseBtnRelease,
// GDK_BUTTON_RELEASE_MASK);
end
else
{$ENDIF}
begin
ConnectSenderSignal(gMouse, 'button-release-event', @gtkMouseBtnRelease,
GDK_BUTTON_RELEASE_MASK);
ConnectSenderSignalAfter(gMouse, 'button-release-event',
@gtkMouseBtnReleaseAfter,GDK_BUTTON_RELEASE_MASK);
end;
end;
LM_ENTER :
begin
if ALCLObject is TCustomButton then
ConnectSenderSignal(gObject, 'enter', @gtkenterCB)
else
ConnectSenderSignal(gObject, 'focus-in-event', @gtkFocusInNotifyCB); //TODO: check this focus in is mapped to focus
end;
LM_EXIT :
begin
if ALCLObject is TCustomButton then
ConnectSenderSignal(gObject, 'leave', @gtkleaveCB)
else
ConnectSenderSignal(gObject, 'focus-out-event', @gtkFocusOutNotifyCB);
end;
LM_LEAVE :
begin
ConnectSenderSignal(gObject, 'leave', @gtkleaveCB);
end;
LM_WINDOWPOSCHANGED: //LM_SIZEALLOCATE, LM_RESIZE :
begin
ConnectSenderSignal(gObject, 'size-allocate', @gtksize_allocateCB);
if gObject<>gFixed then
begin
ConnectSenderSignal(gFixed, 'size-allocate', @gtksize_allocate_client);
end;
end;
LM_CHECKRESIZE :
begin
ConnectSenderSignal(gObject, 'check-resize', @gtkresizeCB);
end;
LM_SETEDITABLE :
begin
ConnectSenderSignal(gObject, 'set-editable', @gtkseteditable);
end;
LM_MOVEWORD :
begin
ConnectSenderSignal(gObject, 'move-word', @gtkmoveword);
end;
LM_MOVEPAGE :
begin
ConnectSenderSignal(gObject, 'move-page', @gtkmovepage);
end;
LM_MOVETOROW :
begin
ConnectSenderSignal(gObject, 'move-to-row', @gtkmovetorow);
end;
LM_MOVETOCOLUMN :
begin
ConnectSenderSignal(gObject, 'move-to-column', @gtkmovetocolumn);
end;
LM_MOUSEENTER:
begin
if gCore<>nil then
ConnectSenderSignal(gCore, 'enter', @gtkEnterCB)
end;
LM_MOUSELEAVE:
begin
if gCore<>nil then
ConnectSenderSignal(gCore, 'leave', @gtkLeaveCB)
end;
LM_KILLCHAR :
begin
ConnectSenderSignal(gObject, 'kill-char', @gtkkillchar);
end;
LM_KILLWORD :
begin
ConnectSenderSignal(gObject, 'kill-word', @gtkkillword);
end;
LM_KILLLINE :
begin
ConnectSenderSignal(gObject, 'kill-line', @gtkkillline);
end;
LM_CUT:
begin
if (ALCLObject is TCustomMemo) then
ConnectSenderSignal(gCore, 'cut-clipboard', @gtkcuttoclip)
else
ConnectSenderSignal(gObject, 'cut-clipboard', @gtkcuttoclip);
end;
LM_COPY:
begin
if (ALCLObject is TCustomMemo) then
ConnectSenderSignal(gCore, 'copy-clipboard', @gtkcopytoclip)
else
ConnectSenderSignal(gObject, 'copy-clipboard', @gtkcopytoclip);
end;
LM_PASTE:
begin
if (ALCLObject is TCustomMemo) then
ConnectSenderSignal(gCore, 'paste-clipboard', @gtkpastefromclip)
else
ConnectSenderSignal(gObject, 'paste-clipboard', @gtkpastefromclip);
end;
LM_HSCROLL:
begin
Adjustment := GetAdjustment(gObject, False);
if Adjustment <> nil then
ConnectSenderSignal(Adjustment, 'value-changed', @GTKHScrollCB);
end;
LM_VSCROLL:
begin
Adjustment := GetAdjustment(gObject, True);
if Adjustment <> nil then
ConnectSenderSignal(Adjustment, 'value-changed', @GTKVScrollCB);
end;
LM_YEARCHANGED : //calendar
Begin
ConnectSenderSignal(gCore, 'prev-year', @gtkyearchanged);
ConnectSenderSignal(gCore, 'next-year', @gtkyearchanged);
end;
// Listview & Header control
LM_COMMAND:
begin
if ALCLObject is TCustomComboBox then begin
ConnectSenderSignalAfter(PgtkObject(PgtkCombo(gObject)^.popwin),
'show', @gtkComboBoxShowAfter);
ConnectSenderSignalAfter(PgtkObject(PgtkCombo(gObject)^.popwin),
'hide', @gtkComboBoxHideAfter);
end;
end;
LM_SelChange:
begin
if ALCLObject is TCustomListBox then
ConnectSenderSignalAfter(PgtkObject(gCore),
'selection_changed', @gtkListBoxSelectionChangedAfter);
end;
LM_DROPFILES:
ConnectSenderSignal(gCore, 'drag_data_received', @GtkDragDataReceived);
LM_CONTEXTMENU:
begin
// Gtk1 does not have an explicit context menu signal, LM_CONTEXTMENU
// support is emulated in gtkMouseBtnPress
end;
(*
LM_WINDOWPOSCHANGED:
begin
ConnectSenderSignal(gObject, 'size-allocate', @gtkSizeAllocateCB);
// ConnectSenderSignal(gObject, 'move_resize', @gtkmoveresize);
end;
*)
else
DebugLn(Format('Trace:ERROR: Signal %d not found!', [AMsg]));
end;
end;
procedure TGTKWidgetSet.SetCallbackDirect(const AMsg: LongInt;
const AGTKObject: PGTKObject; const ALCLObject: TObject);
begin
SetCallbackEx(AMsg,AGTKObject,ALCLObject,true);
end;
procedure TGTKWidgetSet.SetCallback(const AMsg: LongInt;
const AGTKObject: PGTKObject; const ALCLObject: TObject);
begin
SetCallbackEx(AMsg,AGTKObject,ALCLObject,false);
end;
procedure TGTKWidgetSet.SetCommonCallbacks(const AGTKObject: PGTKObject;
const ALCLObject: TObject);
begin
SetCallback(LM_SHOWWINDOW, AGTKObject, ALCLObject);
SetCallback(LM_DESTROY, AGTKObject, ALCLObject);
SetCallback(LM_FOCUS, AGTKObject, ALCLObject);
SetCallback(LM_WINDOWPOSCHANGED, AGTKObject, ALCLObject);
SetCallback(LM_PAINT, AGTKObject, ALCLObject);
SetCallback(LM_KEYDOWN, AGTKObject, ALCLObject);
SetCallback(LM_KEYUP, AGTKObject, ALCLObject);
SetCallback(LM_CHAR, AGTKObject, ALCLObject);
SetCallback(LM_MOUSEMOVE, AGTKObject, ALCLObject);
SetCallback(LM_LBUTTONDOWN, AGTKObject, ALCLObject);
SetCallback(LM_LBUTTONUP, AGTKObject, ALCLObject);
SetCallback(LM_RBUTTONDOWN, AGTKObject, ALCLObject);
SetCallback(LM_RBUTTONUP, AGTKObject, ALCLObject);
SetCallback(LM_MBUTTONDOWN, AGTKObject, ALCLObject);
SetCallback(LM_MBUTTONUP, AGTKObject, ALCLObject);
SetCallback(LM_MOUSEWHEEL, AGTKObject, ALCLObject);
SetCallback(LM_MOUSEHWHEEL, AGTKObject, ALCLObject);
SetCallback(LM_DROPFILES, AGTKObject, ALCLObject);
SetCallback(LM_CONTEXTMENU, AGtkObject, ALCLObject);
end;
{------------------------------------------------------------------------------
Function: TGtkWidgetSet.RemoveCallBacks
Params: Widget
Returns: nothing
Removes Call Back Signals from the Widget
------------------------------------------------------------------------------}
procedure TGtkWidgetSet.RemoveCallbacks(Widget: PGtkWidget);
{$IFDEF Gtk1}
var
MainWidget, ClientWidget, ImplWidget: PGtkWidget;
WinWidgetInfo: PWinWidgetInfo;
{$ELSE}
var
Info: PWinWidgetInfo;
{$ENDIF}
begin
if Widget = nil then Exit;
{$IFDEF Gtk1}
MainWidget := Widget;
if GtkWidgetIsA(Widget, GTK_MENU_ITEM_GET_TYPE) then Exit;
ClientWidget := GetFixedWidget(MainWidget);
WinWidgetInfo := GetWidgetInfo(MainWidget, False);
if WinWidgetInfo <> nil then
ImplWidget := WinWidgetInfo^.CoreWidget
else
ImplWidget := nil;
if MainWidget = PGtkWidget(LastWFPResult) then
DestroyWindowFromPointCB(MainWidget, nil);
g_signal_handlers_destroy(PGtkObject(MainWidget));
if (ClientWidget <> nil) and (ClientWidget <> MainWidget) then
begin
if ClientWidget = PGtkWidget(LastWFPResult) then
DestroyWindowFromPointCB(ClientWidget, nil);
g_signal_handlers_destroy(PGtkObject(ClientWidget));
end;
if (ImplWidget <> nil) and
(ImplWidget <> ClientWidget) and
(ImplWidget <> MainWidget) then
begin
if ImplWidget = PGtkWidget(LastWFPResult) then
DestroyWindowFromPointCB(ImplWidget, nil);
g_signal_handlers_destroy(PGtkObject(ImplWidget));
end;
{$ELSE}
Info := GetWidgetInfo(Widget, False);
if Info <> nil then
g_signal_handlers_disconnect_matched(Widget, G_SIGNAL_MATCH_DATA, 0, 0, nil, nil, Info);
{$ENDIF}
end;
{-------------------------------------------------------------------------------
TGtkWidgetSet.DestroyLCLComponent
Params: Sender: TObject
Destroy the widget and all associated data
-------------------------------------------------------------------------------}
procedure TGtkWidgetSet.DestroyLCLComponent(Sender : TObject);
var
handle: hwnd; // handle of sender
Widget: PGtkWidget;
APage: TCustomPage;
NoteBookWidget: PGtkNotebook;
GtkWindow: PGtkWidget;
begin
Handle := HWnd(PtrUInt(ObjectToGtkObject(Sender)));
if Handle=0 then exit;
Widget:=PGtkWidget(Handle);
if WidgetIsDestroyingHandle(Widget) then exit;
SetWidgetIsDestroyingHandle(Widget);
//DebugLn('TGtkWidgetSet.DestroyLCLComponent A ',GetWidgetClassName(Widget));
// if one of its widgets has the focus then unfocus
GtkWindow:=gtk_widget_get_toplevel(Widget);
if GtkWidgetIsA(GtkWindow,GTK_TYPE_WINDOW)
and (GetNearestLCLObject(PGtkWindow(GtkWindow)^.Focus_Widget)=Sender)
then begin
gtk_window_set_focus(PGtkWindow(GtkWindow),nil);
end;
if Sender is TControl then begin
if Sender is TCustomPage then begin
// a notebook always need at least one page
// -> if this is the last page, then add a dummy page
APage:=TCustomPage(Sender);
if (APage.Parent<>nil) and APage.Parent.HandleAllocated
and (APage.Parent is TCustomTabControl) then begin
NoteBookWidget:=PGtkNotebook(TCustomTabControl(APage.Parent).Handle);
if GetGtkNoteBookPageCount(NoteBookWidget)=1 then begin
AddDummyNoteBookPage(NoteBookWidget);
UpdateNoteBookClientWidget(TCustomTabControl(APage.Parent));
end;
end;
end;
end
else if Sender is TCommonDialog then begin
DestroyCommonDialogAddOns(TCommonDialog(Sender));
end;
// destroy widget and properties
DestroyConnectedWidget(Widget,false);
// clean up unneeded containers
if Sender is TMenuItem then begin
DestroyEmptySubmenu(TMenuItem(Sender));
end;
// mouse click messages
if LastLeft.Component=Sender then
LastLeft:=EmptyLastMouseClick;
if LastMiddle.Component=Sender then
LastMiddle:=EmptyLastMouseClick;
if LastRight.Component=Sender then
LastRight:=EmptyLastMouseClick;
end;
procedure TGTKWidgetSet.FinishCreateHandle(const AWinControl: TWinControl;
Widget: PGtkWidget; const AParams: TCreateParams);
var
WidgetInfo: PWidgetInfo;
Allocation: TGTKAllocation;
begin
WidgetInfo := GetWidgetInfo(Widget,true); // Widget info already created in CreateAPIWidget
WidgetInfo^.LCLObject := AWinControl;
WidgetInfo^.Style := AParams.Style;
WidgetInfo^.ExStyle := AParams.ExStyle;
WidgetInfo^.WndProc := PtrUInt(AParams.WindowClass.lpfnWndProc);
// set allocation
Allocation.X := AParams.X;
Allocation.Y := AParams.Y;
Allocation.Width := AParams.Width;
Allocation.Height := AParams.Height;
gtk_widget_size_allocate(Widget, @Allocation);
Set_RC_Name(AWinControl, Widget);
TGtkWSWinControl.SetCallbacks(PGtkObject(Widget), AWinControl);
end;
procedure TGtkWidgetSet.DestroyConnectedWidget(Widget: PGtkWidget;
CheckIfDestroying: boolean);
var
FixWidget: PGtkWidget;
Accelerators: PGSlist;
AccelEntry : PGtkAccelEntry;
QueueItem : TGtkMessageQueueItem;
NextItem : TGtkMessageQueueItem;
MsgPtr: PMsg;
begin
if CheckIfDestroying then begin
if WidgetIsDestroyingHandle(Widget) then exit;
SetWidgetIsDestroyingHandle(Widget);
end;
FixWidget:=GetFixedWidget(Widget);
// Remove control accelerators - has to be done due to GTK+ bug?
//DebugLn('TGtkWidgetSet.DestroyLCLComponent B Widget=',GetWidgetDebugReport(Widget));
{$IFDef GTK1}
Accelerators:= gtk_accel_group_entries_from_object(PGtkObject(Widget));
while Accelerators <> nil do begin
AccelEntry:= Accelerators^.data;
Accelerators:= Accelerators^.next;
with AccelEntry^ do
gtk_accel_group_remove(accel_group, accelerator_key, accelerator_mods,
PGtkObject(Widget));
end;
{$EndIf}
ClearAccelKey(Widget);
// untransient
if GtkWidgetIsA(Widget,GTK_TYPE_WINDOW) then begin
UntransientWindow(PGtkWindow(Widget));
end;
// callbacks
RemoveCallbacks(Widget);
{$ifdef Gtk1}
//Gtk2 uses a different combobox widget class
// children
if GtkWidgetIsA(Widget,GTK_COMBO_GET_TYPE) then begin
g_signal_handlers_destroy(PGtkObject(PGtkCombo(Widget)^.Entry));
g_signal_handlers_destroy(PGtkObject(PGtkCombo(Widget)^.List));
//is really necessary to clear the text here?
gtk_entry_set_text(PGtkEntry(PGtkCombo(Widget)^.Entry), '');
end;
{$endif}
// update mouse capturing
if (MouseCaptureWidget=Widget) or (MouseCaptureWidget=FixWidget) then
MouseCaptureWidget:=nil;
// update clipboard widget
if (ClipboardWidget=Widget) or (ClipboardWidget=FixWidget) then
begin
// clipboard widget destroyed
if (Application<>nil) and (Application.MainForm<>nil)
and (Application.MainForm.HandleAllocated)
and (PGtkWidget(Application.MainForm.Handle)<>Widget) then
// there is still the main form left -> use it for clipboard
SetClipboardWidget(PGtkWidget(Application.MainForm.Handle))
else
// program closed -> close clipboard
SetClipboardWidget(nil);
end;
// update caret
if GtkWidgetIsA(Widget,GTKAPIWidget_GetType) then
DestroyCaret(HDC(PtrUInt(Widget)));
// remove pending size messages
UnsetResizeRequest(Widget);
FWidgetsResized.Remove(Widget);
if FixWidget<>Widget then
FFixWidgetsResized.Remove(FixWidget);
// destroy the widget
//DebugLn(['TGtkWidgetSet.DestroyConnectedWidget ',GetWidgetDebugReport(Widget)]);
DestroyWidget(Widget);
// remove all remaining messages to this widget
fMessageQueue.Lock;
try
QueueItem:=FMessageQueue.FirstMessageItem;
while (QueueItem<>nil) do begin
MsgPtr := QueueItem.Msg;
NextItem := TGtkMessagequeueItem(QueueItem.Next);
if (PGtkWidget(MsgPtr^.hWnd)=Widget) then
fMessageQueue.RemoveMessage(QueueItem,FPMF_All,true);
QueueItem := NextItem;
end;
finally
fMessageQueue.UnLock;
end;
end;
function TGtkWidgetSet.GetCompStyle(Sender : TObject) : Longint;
begin
Result := csNone;
if (Sender is TControl) then
Result := TControl(Sender).FCompStyle
else
if (Sender is TMenuItem) then
Result := TMenuItem(Sender).FCompStyle
else
if (Sender is TMenu) or (Sender is TPopupMenu)
then
Result := TMenu(Sender).FCompStyle
else
if (Sender is TCommonDialog)
then
result := TCommonDialog(Sender).FCompStyle;
end;
function TGtkWidgetSet.GetCaption(Sender : TObject) : String;
begin
Result := Sender.ClassName;
if (Sender is TControl) then
Result := TControl(Sender).Caption
else
if (Sender is TMenuItem) then
Result := TMenuItem(Sender).Caption;
if Result = '' then
Result := rsBlank;
end;
function TGtkWidgetSet.CreateAPIWidget(
AWinControl: TWinControl): PGtkWidget;
// currently only used for csFixed
var
Adjustment: PGTKAdjustment;
WinWidgetInfo: PWinWidgetInfo;
begin
Result := GTKAPIWidget_New;
WinWidgetInfo := GetWidgetInfo(Result, True);
WinWidgetInfo^.CoreWidget := PGTKAPIWidget(Result)^.Client;
WinWidgetInfo^.LCLObject := AWinControl;
gtk_scrolled_window_set_policy(PGTKScrolledWindow(Result),
GTK_POLICY_NEVER, GTK_POLICY_NEVER);
Adjustment :=
gtk_scrolled_window_get_vadjustment(PGTKScrolledWindow(Result));
if Adjustment <> nil
then with Adjustment^ do
begin
gtk_object_set_data(PGTKObject(Adjustment), odnScrollBar,
PGTKScrolledWindow(Result)^.VScrollBar);
Step_Increment := 1;
end;
Adjustment :=
gtk_scrolled_window_get_hadjustment(PGTKScrolledWindow(Result));
if Adjustment <> nil
then with Adjustment^ do
begin
gtk_object_set_data(PGTKObject(Adjustment), odnScrollBar,
PGTKScrolledWindow(Result)^.HScrollBar);
Step_Increment := 1;
end;
if AWinControl is TCustomControl then
GTKAPIWidget_SetShadowType(PGTKAPIWidget(Result),
BorderStyleShadowMap[TCustomControl(AWinControl).BorderStyle]);
end;
{------------------------------------------------------------------------------
function TGtkWidgetSet.CreateStatusBarPanel(StatusBar: TObject; Index: integer
): PGtkWidget;
Creates a new statusbar panel widget.
------------------------------------------------------------------------------}
function TGtkWidgetSet.OldCreateStatusBarPanel(StatusBar: TObject; Index: integer
): PGtkWidget;
begin
Result:=gtk_statusbar_new;
gtk_widget_show(Result);
// other properties are set in UpdateStatusBarPanels
end;
{------------------------------------------------------------------------------
function TGtkWidgetSet.CreateSimpleClientAreaWidget(Sender: TObject;
NotOnParentsClientArea: boolean): PGtkWidget;
Create a fixed widget in a horizontal box
------------------------------------------------------------------------------}
function TGtkWidgetSet.CreateSimpleClientAreaWidget(Sender: TObject;
NotOnParentsClientArea: boolean): PGtkWidget;
var
TempWidget: PGtkWidget;
WinWidgetInfo: PWinWidgetInfo;
begin
{$if defined(gtk1) or defined(GtkFixedWithWindow)}
// Fixed + GdkWindow
Result := gtk_hbox_new(false, 0);
TempWidget := CreateFixedClientWidget;
{$else}
// Fixed w/o GdkWindow
Result := gtk_event_box_new;
{ MG: Normally the event box should be made invisible as suggested
here: http://library.gnome.org/devel/gtk/stable/GtkEventBox.html#gtk-event-box-set-visible-window
But is has a sideeffect:
Sometimes the mouse events for gtk widgets without window don't get any
mouse events any longer.
For example: Add a PageControl (Page3, Page4) into a PageControl (Page1,Page2).
Start program. Click on Page2, which hides the inner PageControl. Then
click to return to Page1. Now the inner PageControl does no longer
receive mouse events and so you can not switch between Page3 and Page4.}
// MG: disabled: gtk_event_box_set_visible_window(PGtkEventBox(Result), False);
TempWidget := CreateFixedClientWidget(False);
{$ifend}
gtk_container_add(GTK_CONTAINER(Result), TempWidget);
gtk_widget_show(TempWidget);
if NotOnParentsClientArea then
begin
WinWidgetInfo:=GetWidgetInfo(Result, true);
Include(WinWidgetInfo^.Flags, wwiNotOnParentsClientArea);
end;
SetFixedWidget(Result, TempWidget);
SetMainWidget(Result, TempWidget);
// MG: should fix the invisible event box, but does not:
// gtk_widget_add_events (PGtkWidget(Result), GDK_BUTTON_PRESS_MASK);
gtk_widget_show(Result);
end;
function TGTKWidgetSet.CreateStandardCursor(ACursor: SmallInt): hCursor;
var
CursorValue: Integer;
begin
Result := 0;
if ACursor < crLow then Exit;
if ACursor > crHigh then Exit;
case TCursor(ACursor) of
crDefault: CursorValue := GDK_LEFT_PTR;
crArrow: CursorValue := GDK_Arrow;
crCross: CursorValue := GDK_Cross;
crIBeam: CursorValue := GDK_XTerm;
crSizeNESW: CursorValue := GDK_BOTTOM_LEFT_CORNER;
crSizeNS: CursorValue := GDK_SB_V_DOUBLE_ARROW;
crSizeNWSE: CursorValue := GDK_TOP_LEFT_CORNER;
crSizeWE: CursorValue := GDK_SB_H_DOUBLE_ARROW;
crSizeNW: CursorValue := GDK_TOP_LEFT_CORNER;
crSizeN: CursorValue := GDK_TOP_SIDE;
crSizeNE: CursorValue := GDK_TOP_RIGHT_CORNER;
crSizeW: CursorValue := GDK_LEFT_SIDE;
crSizeE: CursorValue := GDK_RIGHT_SIDE;
crSizeSW: CursorValue := GDK_BOTTOM_LEFT_CORNER;
crSizeS: CursorValue := GDK_BOTTOM_SIDE;
crSizeSE: CursorValue := GDK_BOTTOM_RIGHT_CORNER;
crUpArrow: CursorValue := GDK_LEFT_PTR;
crHourGlass:CursorValue := GDK_WATCH;
crHSplit: CursorValue := GDK_SB_H_DOUBLE_ARROW;
crVSplit: CursorValue := GDK_SB_V_DOUBLE_ARROW;
crAppStart: CursorValue := GDK_LEFT_PTR;
crHelp: CursorValue := GDK_QUESTION_ARROW;
crHandPoint:CursorValue := GDK_Hand2;
crSizeAll: CursorValue := GDK_FLEUR;
else
CursorValue := -1;
end;
if CursorValue <> -1 then
Result := hCursor(PtrUInt(gdk_cursor_new(CursorValue)));
end;
{------------------------------------------------------------------------------
procedure TGtkWidgetSet.DestroyEmptySubmenu(Sender: TObject);
Used by DestroyLCLComponent to destroy empty submenus, when destroying the
last menu item.
------------------------------------------------------------------------------}
procedure TGtkWidgetSet.DestroyEmptySubmenu(Sender: TObject);
var
LCLMenuItem: TMenuItem;
ParentLCLMenuItem: TMenuItem;
ParentMenuWidget: PGtkWidget;
ParentSubMenuWidget: PGtkWidget;
SubMenuWidget: PGtkMenu;
begin
if not (Sender is TMenuItem) then
RaiseGDBException('TGtkWidgetSet.DestroyEmptySubmenu');
// destroying a TMenuItem
LCLMenuItem:=TMenuItem(Sender);
// check if in a sub menu
if (LCLMenuItem.Parent=nil) then exit;
if not (LCLMenuItem.Parent is TMenuItem) then exit;
ParentLCLMenuItem:=TMenuItem(LCLMenuItem.Parent);
if not ParentLCLMenuItem.HandleAllocated then exit;
ParentMenuWidget:=PGtkWidget(ParentLCLMenuItem.Handle);
if not GtkWidgetIsA(ParentMenuWidget,GTK_TYPE_MENU_ITEM) then exit;
ParentSubMenuWidget:=PGTKMenuItem(ParentMenuWidget)^.submenu;
if not GtkWidgetIsA(ParentSubMenuWidget,GTK_TYPE_MENU) then exit;
SubMenuWidget:=PGTKMenu(ParentSubMenuWidget);
if SubMenuWidget^.menu_shell.children=nil then begin
gtk_widget_destroy(PgtkWidget(SubMenuWidget));
gtk_object_set_data(PGtkObject(ParentMenuWidget),'ContainerMenu',nil);
end;
end;
{------------------------------------------------------------------------------
TGtkWidgetSet ShowHide
*Note: Show or hide a widget
------------------------------------------------------------------------------}
{$IFDEF VerboseGtkToDos}{$note TODO: move to wsclass }{$ENDIF}
procedure TGtkWidgetSet.SetVisible(Sender: TObject; const AVisible: Boolean);
procedure RaiseWrongClass;
begin
RaiseGDBException('TGtkWidgetSet.ShowHide Sender.ClassName='+Sender.ClassName);
end;
var
SenderWidget: PGTKWidget;
LCLControl: TWinControl;
Decor, Func : Longint;
AWindow: PGdkWindow;
ACustomForm: TCustomForm;
{$IFDEF GTK2}
CurWindowState: TWindowState;
{$ENDIF}
begin
if not (Sender is TWinControl) then
RaiseWrongClass;
if (Sender is TCustomForm) then
ACustomForm := TCustomForm(Sender)
else
ACustomForm := nil;
LCLControl:=TWinControl(Sender);
if not LCLControl.HandleAllocated then exit;
SenderWidget:=PgtkWidget(LCLControl.Handle);
//if (Sender is TForm) and (Sender.ClassName='TForm1') then
// DebugLn('[TGtkWidgetSet.ShowHide] START ',TControl(Sender).Name,':',Sender.ClassName,
// ' Visible=',TControl(Sender).Visible,' GtkVisible=',gtk_widget_visible(SenderWidget),
// ' GtkRealized=',gtk_widget_realized(SenderWidget),
// ' GtkMapped=',gtk_widget_mapped(SenderWidget),
// ' Should=',AVisible );
if AVisible then
begin
if (ACustomForm<>nil) and (ACustomForm.Parent=nil) then begin
// update shared accelerators
ShareWindowAccelGroups(SenderWidget);
end;
// before making the widget visible, set the position and size
// this is not possible for windows - for windows position will be setted
// after widget become visible
if FWidgetsWithResizeRequest.Contains(SenderWidget) then
begin
if (ACustomForm<>nil) and (ACustomForm.Parent=nil) then
begin
// top level control (a form without parent)
{$IFDEF VerboseFormPositioning}
DebugLn('VFP [TGtkWidgetSet.ShowHide] A set bounds ',
LCLControl.Name,':',LCLControl.ClassName,
' Window=',dbgs(GetControlWindow(SenderWidget)<>nil),
' ',dbgs(LCLControl.Left),',',dbgs(LCLControl.Top),
',',dbgs(LCLControl.Width),',',dbgs(LCLControl.Height));
{$ENDIF}
SetWindowSizeAndPosition(PgtkWindow(SenderWidget),LCLControl);
end
else
if (LCLControl.Parent<>nil) then
begin
// resize widget
{$IFDEF VerboseSizeMsg}
DebugLn(['TGtkWidgetSet.ShowHide ',DbgSName(LCLControl)]);
{$ENDIF}
SetWidgetSizeAndPosition(LCLControl);
end;
{$ifndef windows}
UnsetResizeRequest(SenderWidget);
{$endif}
end;
if (ACustomForm<>nil) and (ACustomForm.Parent=nil) then
begin
If (ACustomForm.BorderStyle <> bsSizeable) or
((ACustomForm.FormStyle in fsAllStayOnTop)
and (not (csDesigning in ACustomForm.ComponentState)))
then begin
Decor := GetWindowDecorations(ACustomForm);
Func := GetWindowFunction(ACustomForm);
gtk_widget_realize(SenderWidget);
AWindow:=GetControlWindow(SenderWidget);
gdk_window_set_decorations(AWindow, decor);
gdk_window_set_functions(AWindow, func);
end;
ShareWindowAccelGroups(SenderWidget);
// capturing is always gtkwindow dependent. On showing a new window
// the gtk will put a new widget on the grab stack.
// -> release our capture
ReleaseMouseCapture;
end;
if gtk_widget_visible(SenderWidget) then
exit;
gtk_widget_show(SenderWidget);
end
else begin
if (ACustomForm<>nil) then
UnshareWindowAccelGroups(SenderWidget);
if not gtk_widget_visible(SenderWidget) then
exit;
gtk_widget_hide(SenderWidget);
if GtkWidgetIsA(SenderWidget,GTK_TYPE_WINDOW) then begin
{$IFDEF VerboseTransient}
DebugLn('TGtkWidgetSet.ShowHide HIDE ',Sender.ClassName);
{$ENDIF}
UntransientWindow(PGtkWindow(SenderWidget));
end;
end;
if GtkWidgetIsA(SenderWidget,GTK_TYPE_WINDOW) then begin
// make sure when hiding a window, that at least the main window
// is selectable via the window manager
if (Application<>nil) and (Application.MainForm<>nil)
and (Application.MainForm.HandleAllocated) then begin
SetFormShowInTaskbar(Application.MainForm,stAlways);
end;
end;
//if Sender is TCustomForm then
// DebugLn('[TGtkWidgetSet.ShowHide] END ',Sender.ClassName,' Window=',FormWidget^.Window<>nil);
end;
function TGTKWidgetSet.DragImageList_BeginDrag(APixmap: PGdkPixmap; AMask: PGdkBitmap; AHotSpot: TPoint): Boolean;
var
w, h: gint;
begin
if FDragImageList = nil then
begin
FDragImageList := gtk_window_new(GTK_WINDOW_TOPLEVEL);
gdk_drawable_get_size(APixmap, @w, @h);
gtk_window_set_default_size(PGtkWindow(FDragImageList), w, h);
gtk_widget_realize(FDragImageList);
gdk_window_set_decorations(FDragImageList^.window, 0);
gdk_window_set_functions(FDragImageList^.window, GDK_FUNC_RESIZE or GDK_FUNC_CLOSE);
FDragImageListIcon := gtk_pixmap_new(APixmap, AMask);
gtk_container_add(PGtkContainer(FDragImageList), FDragImageListIcon);
gtk_widget_show(FDragImageListIcon);
// make window transparent outside mask
gdk_window_shape_combine_mask(FDragImageList^.window, AMask, 0, 0);
FDragHotStop := AHotSpot;
end;
Result := FDragImageList <> nil;
end;
procedure TGTKWidgetSet.DragImageList_EndDrag;
begin
if FDragImageList <> nil then
begin
if FDragImageListIcon <> nil then
gtk_widget_destroy(FDragImageListIcon);
gtk_widget_destroy(FDragImageList);
FDragImageList := nil;
end;
end;
function TGTKWidgetSet.DragImageList_DragMove(X, Y: Integer): Boolean;
begin
Result := FDragImageList <> nil;
if Result then
begin
if gdk_window_is_visible(FDragImageList^.Window) then
gdk_window_raise(FDragImageList^.Window);
gdk_window_move(FDragImageList^.Window, X - FDragHotStop.X, Y - FDragHotStop.Y);
end;
end;
function TGTKWidgetSet.DragImageList_SetVisible(NewVisible: Boolean): Boolean;
begin
Result := FDragImageList <> nil;
if Result then
if NewVisible then
gtk_widget_show(FDragImageList)
else
gtk_widget_hide(FDragImageList);
end;
{-------------------------------------------------------------------------------
method TGtkWidgetSet LoadPixbufFromLazResource
Params: const ResourceName: string;
var Pixbuf: PGdkPixbuf
Result: none
Loads a pixbuf from a lazarus resource. The resource must be a XPM file.
-------------------------------------------------------------------------------}
procedure TGtkWidgetSet.LoadPixbufFromLazResource(const ResourceName: string;
var Pixbuf: PGdkPixbuf);
var
ImgData: PPChar;
begin
Pixbuf:=nil;
try
ImgData:=LazResourceXPMToPPChar(ResourceName);
except
on e: Exception do
DebugLn('WARNING: TGtkWidgetSet.LoadXPMFromLazResource: '+e.Message);
end;
{$IFDEF DebugGDK}BeginGDKErrorTrap;{$ENDIF}
{$IFDEF VerboseGdkPixbuf}
debugln('LoadPixbufFromLazResource A1');
{$ENDIF}
pixbuf:=gdk_pixbuf_new_from_xpm_data(ImgData);
{$IFDEF VerboseGdkPixbuf}
debugln('LoadPixbufFromLazResource A2');
{$ENDIF}
{$IFDEF DebugGDK}EndGDKErrorTrap;{$ENDIF}
FreeMem(ImgData);
end;
{-------------------------------------------------------------------------------
procedure AddDummyNoteBookPage(NoteBookWidget: PGtkNoteBook);
Adds the dummy page.
A gtk notebook must have at least one page, but TCustomTabControl also allows
no pages at all. Therefore at least a dummy page is added. This dummy page is
removed as soon as other pages are added.
-------------------------------------------------------------------------------}
procedure TGtkWidgetSet.AddDummyNoteBookPage(NoteBookWidget: PGtkNoteBook);
var
DummyWidget: PGtkWidget;
ALabel: PGtkWidget;
MenuLabel: PGtkWidget;
{$IFDEF Gtk}
AWidget: PGtkWidget;
{$ENDIF}
begin
if NoteBookWidget=nil then exit;
DummyWidget:=GetGtkNoteBookDummyPage(NoteBookWidget);
if (DummyWidget=nil) then begin
// the notebook has no pages
// -> add a dummy page
DummyWidget := gtk_hbox_new(false, 0);
{$IFDEF Gtk}
AWidget := CreateFixedClientWidget{$IFNDEF GtkFixedWithWindow}(false){$ENDIF};
gtk_widget_show(AWidget);
//gtk_box_pack_start_defaults(GTK_BOX(DummyWidget),AWidget);
gtk_container_add(GTK_CONTAINER(DummyWidget), AWidget);
{$ENDIF}
gtk_widget_show(DummyWidget);
ALabel:=gtk_label_new('');
gtk_widget_show(ALabel);
MenuLabel:=gtk_label_new('');
gtk_widget_show(MenuLabel);
gtk_notebook_append_page_menu(NoteBookWidget,DummyWidget,ALabel,MenuLabel);
SetGtkNoteBookDummyPage(NoteBookWidget,DummyWidget);
end;
end;
{------------------------------------------------------------------------------
Method: TGtkWidgetSet.SetPixel
Params: Sender : the lcl object which called this func via SendMessage
Data : pointer to a TLMSetGetPixel record
Returns: nothing
Set the color of the specified pixel on the window?screen?object?
------------------------------------------------------------------------------}
procedure TGtkWidgetSet.DCSetPixel(CanvasHandle: HDC; X, Y: integer; AColor: TGraphicsColor);
var
DC : TGtkDeviceContext absolute CanvasHandle;
DCOrigin: TPoint;
GDKColor: TGDKColor;
begin
if (DC = nil) or (DC.Drawable = nil) then exit;
DCOrigin := DC.Offset;
inc(X,DCOrigin.X);
inc(Y,DCOrigin.Y);
DC.SelectedColors := dcscCustom;
GDKColor := AllocGDKColor(ColorToRGB(AColor));
gdk_gc_set_foreground(DC.GC, @GDKColor);
{$IFDEF DebugGDK}BeginGDKErrorTrap;{$ENDIF}
gdk_draw_point(DC.Drawable, DC.GC, X, Y);
{$IFDEF DebugGDK}EndGDKErrorTrap;{$ENDIF}
end;
procedure TGtkWidgetSet.DCRedraw(CanvasHandle: HDC);
var
fWindow :pGdkWindow;
widget : PgtkWIdget;
PixMap : pgdkPixMap;
Child: PGtkWidget;
begin
//DebugLn('Trace:In AutoRedraw in GTKObject');
Child := PgtkWidget(CanvasHandle);
Widget := GetFixedWidget(Child);
pixmap := gtk_Object_get_data(pgtkobject(Child),'Pixmap');
if PixMap = nil then Exit;
fWindow := GetControlWindow(widget);
if fWindow<>nil then begin
{$IFDEF DebugGDK}BeginGDKErrorTrap;{$ENDIF}
gdk_draw_pixmap(fwindow,
gtk_widget_get_style(widget)^.fg_gc[GTK_WIDGET_STATE (widget)],
pixmap,
0,0,
0,0,
pgtkwidget(widget)^.allocation.width,
pgtkwidget(widget)^.allocation.height);
{$IFDEF DebugGDK}EndGDKErrorTrap;{$ENDIF}
end;
end;
{------------------------------------------------------------------------------
Method: TGtkWidgetSet.GetPixel
Params: Sender : the lcl object which called this func via SenMessage
Data : pointer to a TLMSetGetPixel record
Returns: nothing
Get the color of the specified pixel on the window?screen?object?
------------------------------------------------------------------------------}
function TGtkWidgetSet.DCGetPixel(CanvasHandle: HDC; X, Y: integer): TGraphicsColor;
var
DC : TGtkDeviceContext absolute CanvasHandle;
Image : pGDKImage;
GDKColor: TGDKColor;
Colormap : PGDKColormap;
DCOrigin: TPoint;
MaxX, MaxY: integer;
Pixel: LongWord;
begin
Result := clNone;
if (DC = nil) or (DC.Drawable = nil) then Exit;
DCOrigin := DC.Offset;
inc(X,DCOrigin.X);
inc(Y,DCOrigin.Y);
gdk_drawable_get_size(DC.Drawable, @MaxX, @MaxY);
if (X<0) or (Y<0) or (X>=MaxX) or (Y>=MaxY) then exit;
Image := gdk_drawable_get_image(DC.Drawable,X,Y,1,1);
if Image = nil then exit;
{$ifdef Gtk1}
// previously gdk_image_get_colormap(image) was used, implementation
// was casting GdkImage to GdkWindow which is not valid and cause AVs
if gdk_window_get_type(PGdkWindow(DC.Drawable))= GDK_WINDOW_PIXMAP then
colormap := nil // pixmaps are created with null colormap, get system one instead
else
colormap := gdk_window_get_colormap(PGdkWindow(DC.Drawable));
{$else}
colormap := gdk_image_get_colormap(image);
if colormap = nil then
colormap := gdk_drawable_get_colormap(DC.Drawable);
{$endif}
if colormap = nil then
colormap := gdk_colormap_get_system;
Pixel:=gdk_image_get_pixel(Image,0,0);
FillChar(GDKColor, SizeOf(GDKColor),0);
// does not work with TBitmap.Canvas
gdk_colormap_query_color(colormap, Pixel, @GDKColor);
gdk_image_unref(Image);
Result := TGDKColorToTColor(GDKColor);
end;
{ TODO: move this ``LM_GETVALUE'' spinedit code someplace useful
csSpinEdit :
Begin
Single(Data^):=gtk_spin_button_get_value_As_Float(PgtkSpinButton(Handle));
end;
}
{------------------------------------------------------------------------------
Function: IsValidDC
Params: DC: a (LCL) devicecontext
Returns: True if valid
Checks if the given DC is valid.
------------------------------------------------------------------------------}
function TGtkWidgetSet.IsValidDC(const DC: HDC): Boolean;
begin
Result := FDeviceContexts.Contains(Pointer(DC));
end;
{------------------------------------------------------------------------------
Function: IsValidGDIObject
Params: GDIObject: a (LCL) gdiObject
Returns: True if valid
Checks if the given GDIObject is valid (e.g. known to the gtk interface).
This is a quick consistency check to avoid working with dangling pointers.
------------------------------------------------------------------------------}
function TGtkWidgetSet.IsValidGDIObject(const AGDIObj: HGDIOBJ): Boolean;
var
GdiObject: PGdiObject absolute AGDIObj;
begin
Result := (AGDIObj <> 0) and FGDIObjects.Contains(GDIObject);
end;
{------------------------------------------------------------------------------
Function: IsValidGDIObjectType
Params: GDIObject: a (LCL) gdiObject
GDIType: the requested type
Returns: True if valid
Checks if the given GDIObject is valid and the GDItype is the requested type
------------------------------------------------------------------------------}
function TGtkWidgetSet.IsValidGDIObjectType(
const GDIObject: HGDIOBJ; const GDIType: TGDIType): Boolean;
begin
Result := IsValidGDIObject(GDIObject)
and (PGdiObject(GDIObject)^.GDIType = GDIType);
end;
{------------------------------------------------------------------------------
Function: NewDC
Params: none
Returns: a gtkwinapi DeviceContext
Creates a raw DC and adds it to FDeviceContexts.
Used internally by: CreateCompatibleDC, CreateDCForWidget and SaveDC
------------------------------------------------------------------------------}
function TGtkWidgetSet.NewDC: TGtkDeviceContext;
begin
//DebugLn(Format('Trace:> [TGtkWidgetSet.NewDC]', []));
if FDCManager = nil
then begin
FDCManager := TDeviceContextMemManager.Create(GetDeviceContextClass);
FDCManager.MinimumFreeCount := 1000;
end;
Result := FDCManager.NewDeviceContext;
{$IFDEF DebugLCLComponents}
DebugDeviceContexts.MarkCreated(Result,'TGtkWidgetSet.NewDC');
{$ENDIF}
FDeviceContexts.Add(Result);
{$ifdef TraceGdiCalls}
FillStackAddrs(get_caller_frame(get_frame), @Result.StackAddrs);
{$endif}
//DebugLn(['[TGtkWidgetSet.NewDC] ',DbgS(Result),' ',FDeviceContexts.Count]);
//DebugLn(Format('Trace:< [TGtkWidgetSet.NewDC] FDeviceContexts[%d] --> 0x%p', [n, Result]));
end;
function TGTKWidgetSet.FindDCWithGDIObject(GDIObject: PGdiObject
): TGtkDeviceContext;
var
HashItem: PDynHashArrayItem;
DC: TGtkDeviceContext;
g: TGDIType;
Cnt: Integer;
begin
Result:=nil;
if GdiObject=nil then exit;
HashItem:=FDeviceContexts.FirstHashItem;
Cnt:=0;
while HashItem<>nil do begin
DC:=TGtkDeviceContext(HashItem^.Item);
for g:=Low(TGDIType) to High(TGDIType) do
if DC.GDIObjects[g]=GdiObject then exit(DC);
inc(Cnt);
HashItem:=HashItem^.Next;
end;
if Cnt<>FDeviceContexts.Count then
RaiseGDBException('');
end;
{------------------------------------------------------------------------------
procedure TGtkWidgetSet.DisposeDC(DC: PDeviceContext);
Disposes a DC
------------------------------------------------------------------------------}
procedure TGtkWidgetSet.DisposeDC(aDC: TGtkDeviceContext);
begin
if not FDeviceContexts.Contains(aDC) then Exit;
FDeviceContexts.Remove(aDC);
{$IFDEF DebugLCLComponents}
DebugDeviceContexts.MarkDestroyed(ADC);
{$ENDIF}
FDCManager.DisposeDeviceContext(ADC);
end;
{------------------------------------------------------------------------------
function TGtkWidgetSet.CreateDCForWidget(TheWidget: PGtkWidget;
TheWindow: PGdkWindow; WithChildWindows: boolean): HDC;
Creates an initial DC
------------------------------------------------------------------------------}
function TGtkWidgetSet.CreateDCForWidget(AWidget: PGtkWidget; AWindow: PGdkWindow;
AWithChildWindows: Boolean; ADoubleBuffer: PGdkDrawable): HDC;
var
DC: TGtkDeviceContext absolute Result;
begin
DC := NewDC;
DC.SetWidget(AWidget, AWindow, AWithChildWindows, ADoubleBuffer);
end;
{------------------------------------------------------------------------------
function TGtkWidgetSet.GetDoubleBufferedDC(Handle: HWND): HDC;
------------------------------------------------------------------------------}
function TGtkWidgetSet.GetDoubleBufferedDC(Handle: HWND): HDC;
var
Widget: PGtkWidget;
WidgetInfo: PWinWidgetInfo;
AWindow: PGdkWindow;
Width, Height: integer;
BufferWidth, BufferHeight: integer;
DoubleBuffer: PGdkPixmap;
BufferCreated: Boolean;
DevContext: TGtkDeviceContext absolute Result;
CaretWasVisible: Boolean;
MainWidget: PGtkWidget;
GC: PGdkGC;
//LCLObject: TObject;
//x, y: integer;
begin
Result:=0;
Widget:=PGtkWidget(Handle);
{$IFDEF VerboseDoubleBuffer}
DebugLn('TGtkWidgetSet.GetDoubleBufferedDC ',GetWidgetClassName(Widget));
{$ENDIF}
WidgetInfo:=GetWidgetInfo(Widget,true);
AWindow:=Widget^.Window;
Width:=Widget^.allocation.width;
Height:=Widget^.allocation.height;
// create or resize DoubleBuffer
DoubleBuffer:=WidgetInfo^.DoubleBuffer;
if DoubleBuffer<>nil then begin
gdk_window_get_size(DoubleBuffer,@BufferWidth,@BufferHeight);
{$IFDEF VerboseDoubleBuffer}
DebugLn('TGtkWidgetSet.GetDoubleBufferedDC Checking ',
' Width=',Width,' Height=',Height,
' BufferWidth=',BufferWidth,' BufferHeight=',BufferHeight
);
{$ENDIF}
// lazy update of buffer
if (BufferWidth<Width) or (BufferHeight<Height)
or (BufferWidth>(Width*2+20)) or (BufferHeight>(Height*2+20))
then begin
{$IFDEF VerboseDoubleBuffer}
DebugLn('TGtkWidgetSet.GetDoubleBufferedDC Destroying old double buffer ');
{$ENDIF}
gdk_pixmap_unref(DoubleBuffer);
DoubleBuffer:=nil;
WidgetInfo^.DoubleBuffer:=nil;
end;
end;
BufferCreated:=false;
if DoubleBuffer=nil then begin
// create DoubleBuffer
{$IFDEF VerboseDoubleBuffer}
DebugLn('TGtkWidgetSet.GetDoubleBufferedDC Creating double buffer ',
' Width=',Width,' Height=',Height);
{$ENDIF}
DoubleBuffer:=gdk_pixmap_new(AWindow,Width,Height,-1);
WidgetInfo^.DoubleBuffer := DoubleBuffer;
BufferCreated:=true;
end;
// create DC for double buffer
Result := CreateDCForWidget(Widget, Widget^.Window, False, DoubleBuffer);
if BufferCreated
then begin
// create GC
GC:=DevContext.GC;
// copy old context to buffer
gdk_gc_set_clip_region(GC, nil);
gdk_gc_set_clip_rectangle(GC, nil);
// hide caret
HideCaretOfWidgetGroup(Widget,MainWidget,CaretWasVisible);
// copy
gdk_window_copy_area(DoubleBuffer, GC,0,0,
Widget^.Window,0,0,Width,Height);
{LCLObject:=GetParentLCLObject(Widget);
DebugLn('TGtkWidgetSet.GetDoubleBufferedDC ',DbgS(Widget),8),'=',GetWidgetClassName(Widget),' ',DbgS(Cardinal(LCLObject));
if (LCLObject is TPanel)
and (csDesigning in TPanel(LCLObject).ComponentState) then begin
gdk_window_get_origin(Widget^.Window,@x,@y);
DebugLn('TGtkWidgetSet.BeginPaint ',TPanel(LCLObject).Name,':',TPanel(LCLObject).ClassName,
' Widget=',GetWidgetClassName(Widget),
' Origin=',x,',',y,
' ',Widget^.allocation.x,',',Widget^.allocation.y);
end;}
// restore caret
if CaretWasVisible then
GTKAPIWidget_ShowCaret(PGTKAPIWidget(MainWidget));
end;
{$IFDEF VerboseDoubleBuffer}
DebugLn('TGtkWidgetSet.GetDoubleBufferedDC DC=',DbgS(Result));
{$ENDIF}
end;
{------------------------------------------------------------------------------
Function: NewGDIObject
Params: none
Returns: a gtkwinapi DeviceContext
Creates an initial GDIObject of GDIType.
------------------------------------------------------------------------------}
function TGtkWidgetSet.NewGDIObject(const GDIType: TGDIType): PGdiObject;
begin
//DebugLn(Format('Trace:> [TGtkWidgetSet.NewGDIObject]', []));
Result:=GtkDef.InternalNewPGDIObject;
{$ifdef TraceGdiCalls}
FillStackAddrs(get_caller_frame(get_frame), @Result^.StackAddrs);
{$endif}
Result^.GDIType := GDIType;
Result^.Shared := False;
inc(Result^.RefCount);
FGDIObjects.Add(Result);
//DebugLn('[TGtkWidgetSet.NewGDIObject] ',DbgS(Result),' ',FGDIObjects.Count);
//DebugLn(Format('Trace:< [TGtkWidgetSet.NewGDIObject] FGDIObjects --> 0x%p', [Result]));
end;
{------------------------------------------------------------------------------
Function: NewGDIObject
Params: GdiObject: PGdiObject
Returns: none
Dispose a GdiObject
------------------------------------------------------------------------------}
procedure TGtkWidgetSet.DisposeGDIObject(GDIObject: PGdiObject);
begin
if FGDIObjects.Contains(GDIObject) then
begin
FGDIObjects.Remove(GDIObject);
GtkDef.InternalDisposePGDIObject(GDIObject);
end
else
RaiseGDBException('');
end;
function TGTKWidgetSet.ReleaseGDIObject(GdiObject: PGdiObject): boolean;
procedure RaiseGDIObjectIsStillUsed;
var
CurGDIObject: PGDIObject;
DC: TGtkDeviceContext;
begin
{$ifdef TraceGdiCalls}
DebugLn();
DebugLn('TGtkWidgetSet.ReleaseGDIObject: TraceCall for still used object: ');
DumpBackTrace(PgdiObject(GdiObject)^.StackAddrs);
DebugLn();
DebugLn('Exception will follow:');
DebugLn();
{$endif}
// do not raise an exception, because this is a common bug in many programs
// just give a warning
CurGDIObject:=PGdiObject(GdiObject);
debugln('TGtkWidgetSet.ReleaseGDIObject GdiObject='+dbgs(CurGDIObject)
+' '+dbgs(CurGDIObject^.GDIType)
+' is still used. DCCount='+dbgs(CurGDIObject^.DCCount));
DC:=FindDCWithGDIObject(CurGDIObject);
if DC<>nil then begin
DebugLn(['DC: ',dbgs(Pointer(DC)),' ',
GetWidgetDebugReport(DC.Widget)]);
end else begin
DebugLn(['No DC found with this GDIObject => either the DCCount is wrong or the DC is not in the DC list']);
end;
//DumpStack;
//RaiseGDBException('');
end;
procedure RaiseInvalidGDIOwner;
var
o: PGDIObject;
begin
{$ifdef TraceGdiCalls}
DebugLn();
DebugLn('TGtkWidgetSet.ReleaseGDIObject: TraceCall for invalid object: ');
DumpBackTrace(PgdiObject(GdiObject)^.StackAddrs);
DebugLn();
DebugLn('Exception will follow:');
DebugLn();
{$endif}
o:=PGdiObject(GdiObject);
RaiseGDBException('TGtkWidgetSet.ReleaseGDIObject invalid owner of'
+' GdiObject='+dbgs(o)
+' Owner='+dbgs(o^.Owner)
+' Owner.OwnedGDIObjects='+dbgs(o^.Owner.OwnedGDIObjects[o^.GDIType]));
end;
begin
if GDIObject = nil then
begin
Result := True;
exit;
end;
{$IFDEF DebugLCLComponents}
if DebugGdiObjects.IsDestroyed(GDIObject) then
begin
DebugLn(['TGtkWidgetSet.ReleaseGDIObject object already deleted ',GDIObject]);
debugln(DebugGdiObjects.GetInfo(GDIObject,true));
Halt;
end;
{$ENDIF}
with PGdiObject(GDIObject)^ do
begin
dec(RefCount);
if (RefCount > 0) or Shared then
begin
Result := True;
exit;
end;
if DCCount > 0 then
begin
RaiseGDIObjectIsStillUsed;
exit(False);
end;
if Owner <> nil then
begin
if Owner.OwnedGDIObjects[GDIType] <> PGdiObject(GDIObject) then
RaiseInvalidGDIOwner;
Owner.OwnedGDIObjects[GDIType] := nil;
end;
case GDIType of
gdiFont:
begin
if GDIFontObject <> nil then
begin
//DebugLn(['TGtkWidgetSet.DeleteObject GDIObject=',dbgs(Pointer(PtrInt(GDIObject))),' GDIFontObject=',dbgs(GDIFontObject)]);
FontCache.Unreference(GDIFontObject);
end;
end;
gdiBrush:
begin
{$IFDEF DebugGDKTraps}
BeginGDKErrorTrap;
{$ENDIF}
{$IFDEF DebugGDIBrush}
debugln('TGtkWidgetSet.DeleteObject gdiBrush: ',DbgS(GdiObject));
//if Cardinal(GdiObject)=$404826F4 then RaiseGDBException('');
{$ENDIF}
if (GDIBrushPixmap <> nil) then
gdk_pixmap_unref(GDIBrushPixmap);
{$IFDEF DebugGDKTraps}
EndGDKErrorTrap;
{$ENDIF}
FreeGDIColor(@GDIBrushColor);
end;
gdiBitmap:
begin
{$IFDEF DebugGDKTraps}
BeginGDKErrorTrap;
{$ENDIF}
case GDIBitmapType of
gbBitmap:
begin
if GDIBitmapObject <> nil then
gdk_bitmap_unref(GDIBitmapObject);
end;
gbPixmap:
begin
if GDIPixmapObject.Image <> nil then
gdk_pixmap_unref(GDIPixmapObject.Image);
if GDIPixmapObject.Mask <> nil then
gdk_bitmap_unref(GDIPixmapObject.Mask);
end;
gbPixbuf:
begin
if GDIPixbufObject <> nil then
gdk_pixbuf_unref(GDIPixbufObject);
end;
end;
if (Visual <> nil) and (not SystemVisual) then
gdk_visual_unref(Visual);
if Colormap <> nil then
gdk_colormap_unref(Colormap);
{$IFDEF DebugGDKTraps}
EndGDKErrorTrap;
{$ENDIF}
end;
gdiPen:
begin
FreeGDIColor(@GDIPenColor);
FreeMem(GDIPenDashes);
end;
gdiRegion:
begin
if (GDIRegionObject <> nil) then
gdk_region_destroy(GDIRegionObject);
end;
gdiPalette:
begin
{$IFDEF DebugGDKTraps}
BeginGDKErrorTrap;
{$ENDIF}
If PaletteVisual <> nil then
gdk_visual_unref(PaletteVisual);
If PaletteColormap <> nil then
gdk_colormap_unref(PaletteColormap);
{$IFDEF DebugGDKTraps}
EndGDKErrorTrap;
{$ENDIF}
FreeAndNil(RGBTable);
FreeAndNil(IndexTable);
end;
else begin
Result:= false;
DebugLn('[TGtkWidgetSet.DeleteObject] TODO : Unimplemented GDI type');
//DebugLn('Trace:TODO : Unimplemented GDI object in delete object');
end;
end;
end;
{ Dispose of the GDI object }
//DebugLn('[TGtkWidgetSet.DeleteObject] ',Result,' ',DbgS(GDIObject,8),' ',FGDIObjects.Count);
DisposeGDIObject(PGDIObject(GDIObject));
end;
procedure TGTKWidgetSet.ReferenceGDIObject(GdiObject: PGdiObject);
begin
inc(GdiObject^.RefCount);
end;
{------------------------------------------------------------------------------
Function: CreateDefaultBrush
Params: none
Returns: a Brush GDIObject
Creates an default brush, used for initial values
------------------------------------------------------------------------------}
function TGtkWidgetSet.CreateDefaultBrush: PGdiObject;
begin
//debugln(' TGtkWidgetSet.CreateDefaultBrush ->');
Result := NewGDIObject(gdiBrush);
{$IFDEF DebugGDIBrush}
debugln('TGtkWidgetSet.CreateDefaultBrush Created: ',DbgS(Result));
{$ENDIF}
Result^.GDIBrushFill := GDK_SOLID;
Result^.GDIBrushColor.ColorRef := 0;
Result^.GDIBrushColor.Colormap := gdk_colormap_get_system;
gdk_color_white(Result^.GDIBrushColor.Colormap, @Result^.GDIBrushColor.Color);
BuildColorRefFromGDKColor(Result^.GDIBrushColor);
end;
{------------------------------------------------------------------------------
Function: CreateDefaultFont
Params: none
Returns: a Font GDIObject
Creates an default font, used for initial values
------------------------------------------------------------------------------}
function TGtkWidgetSet.CreateDefaultFont: PGdiObject;
var
CachedFont: TGtkFontCacheDescriptor;
begin
Result := NewGDIObject(gdiFont);
Result^.UntransfFontHeight := 0;
Result^.GDIFontObject:=GetDefaultGtkFont(false);
CachedFont:=FontCache.FindADescriptor(Result^.GDIFontObject);
if CachedFont<>nil then
FontCache.Reference(Result^.GDIFontObject)
else
FontCache.Add(Result^.GDIFontObject,DefaultLogFont,'');
end;
{------------------------------------------------------------------------------
Function: CreateDefaultPen
Params: none
Returns: a Pen GDIObject
Creates an default pen, used for initial values
------------------------------------------------------------------------------}
function TGtkWidgetSet.CreateDefaultPen: PGdiObject;
begin
//write(' TGtkWidgetSet.CreateDefaultPen ->');
Result := NewGDIObject(gdiPen);
Result^.UnTransfPenWidth := 0;
Result^.GDIPenStyle := PS_SOLID;
Result^.GDIPenColor.ColorRef := 0;
Result^.GDIPenColor.Colormap := gdk_colormap_get_system;
gdk_color_black(Result^.GDIPenColor.Colormap, @Result^.GDIPenColor.Color);
BuildColorRefFromGDKColor(Result^.GDIPenColor);
end;
function TGTKWidgetSet.CreateDefaultGDIBitmap: PGdiObject;
begin
Result := NewGDIObject(gdiBitmap);
end;
{------------------------------------------------------------------------------
procedure TGtkWidgetSet.UpdateDCTextMetric(DC: TGtkDeviceContext);
Sets the gtk resource file and parses it.
------------------------------------------------------------------------------}
procedure TGtkWidgetSet.UpdateDCTextMetric(DC: TGtkDeviceContext);
const
TestString: array[boolean] of string = (
// single byte char font
'{ABCDEFGHIJKLMNOPQRSTUVWXYZXYZabcdefghijklmnopqrstuvwxyz|_}',
// double byte char font
#0'{'#0'A'#0'B'#0'C'#0'D'#0'E'#0'F'#0'G'#0'H'#0'I'#0'J'#0'K'#0'L'#0'M'#0'N'
+#0'O'#0'P'#0'Q'#0'R'#0'S'#0'T'#0'U'#0'V'#0'W'#0'X'#0'Y'#0'Z'#0'X'#0'Y'#0'Z'
+#0'a'#0'b'#0'c'#0'd'#0'e'#0'f'#0'g'#0'h'#0'i'#0'j'#0'k'#0'l'#0'm'#0'n'#0'o'
+#0'p'#0'q'#0'r'#0's'#0't'#0'u'#0'v'#0'w'#0'x'#0'y'#0'z'#0'|'#0'_'#0'}'
);
var
UseFont : TGtkIntfFont;
CachedFont: TGtkFontCacheItem;
IsDefault: Boolean;
{$IFDEF Gtk1}
AvgTxtLen: Integer;
Width: LongInt;
{$ELSE}
AWidget: PGtkWidget;
APangoContext: PPangoContext;
APangoLanguage: PPangoLanguage;
Desc: TGtkFontCacheDescriptor;
APangoFontDescription: PPangoFontDescription;
APangoMetrics: PPangoFontMetrics;
aRect: TPangoRectangle;
{$ENDIF}
begin
with TGtkDeviceContext(DC) do begin
if dcfTextMetricsValid in Flags then begin
// cache valid
exit;
end;
UseFont:=GetGtkFont(TGtkDeviceContext(DC));
FillChar(DCTextMetric, SizeOf(DCTextMetric), 0);
CachedFont:=FontCache.FindGTKFont(UseFont);
IsDefault:=UseFont = GetDefaultGtkFont(false);
if (CachedFont=nil) and (not IsDefault) then begin
DebugLn(['TGtkWidgetSet.UpdateDCTextMetric no CachedFont UseFont=',dbgs(UseFont)]);
DumpStack;
end;
//DebugLn(['TGtkWidgetSet.UpdateDCTextMetric IsDefault=',UseFont = GetDefaultGtkFont(false)]);
if (CachedFont<>nil) and (CachedFont.MetricsValid) then begin
DCTextMetric.lBearing:=CachedFont.lBearing;
DCTextMetric.rBearing:=CachedFont.rBearing;
DCTextMetric.IsDoubleByteChar:=CachedFont.IsDoubleByteChar;
DCTextMetric.IsMonoSpace:=CachedFont.IsMonoSpace;
DCTextMetric.TextMetric:=CachedFont.TextMetric;
end
else with DCTextMetric do begin
IsDoubleByteChar:=FontIsDoubleByteCharsFont(UseFont);
IsMonoSpace:=FontIsMonoSpaceFont(UseFont);
{$IFDEF Gtk1}
AvgTxtLen:=length(TestString[false]);
if IsDoubleByteChar then begin
gdk_text_extents(UseFont, PChar(TestString[IsDoubleByteChar]),
AvgTxtLen, @lBearing, @rBearing, @Width,
@TextMetric.tmAscent, @TextMetric.tmDescent);
//debugln('TGtkWidgetSet.UpdateDCTextMetric A IsDoubleByteChar=',dbgs(IsDoubleByteChar),' Width=',dbgs(Width),' AvgTxtLen=',dbgs(AvgTxtLen));
TextMetric.tmHeight := TextMetric.tmAscent+TextMetric.tmDescent;
// gdk_text_height(UseFont,PChar(TestString[IsDoubleByteChar]),
// AvgTxtLen*2)
// {$IfNDef Win32} + TextMetric.tmdescent div 2{$EndIf};
end else begin
gdk_text_extents(UseFont, PChar(TestString[IsDoubleByteChar]),
AvgTxtLen, @lBearing, @rBearing, @Width,
@TextMetric.tmAscent, @TextMetric.tmDescent);
TextMetric.tmHeight := TextMetric.tmAscent+TextMetric.tmDescent;
// gdk_text_height(UseFont,PChar(TestString[IsDoubleByteChar]),
// AvgTxtLen)
// {$IfNDef Win32} + TextMetric.tmdescent div 2{$EndIf};
end;
//if Width<AvgTxtLen then UseWidthHeuristic;
//TextMetric.tmAscent := TextMetric.tmHeight - TextMetric.tmDescent;
if IsDoubleByteChar then
TextMetric.tmAveCharWidth:=Width div (AvgTxtLen div 2)
else
TextMetric.tmAveCharWidth:=Width div AvgTxtLen;
if TextMetric.tmAveCharWidth<1 then TextMetric.tmAveCharWidth:=1;
TextMetric.tmMaxCharWidth :=
Max(gdk_char_width(UseFont, 'W'),
gdk_char_width(UseFont, 'M')); // temp hack
if TextMetric.tmMaxCharWidth<TextMetric.tmAveCharWidth then
TextMetric.tmMaxCharWidth:=TextMetric.tmAveCharWidth;
{$ELSE Gtk2}
// get pango context (= association to a widget)
AWidget:=Widget;
if AWidget=nil then
AWidget:=GetStyleWidget(lgsLabel);
APangoContext := gtk_widget_get_pango_context(AWidget);
if APangoContext=nil then
DebugLn(['TGtkWidgetSet.UpdateDCTextMetric WARNING: no pango context']);
// get pango language (e.g. de_DE)
APangoLanguage := pango_context_get_language(APangoContext);
if APangoLanguage=nil then
DebugLn(['TGtkWidgetSet.UpdateDCTextMetric WARNING: no pango language']);
// get pango font description (e.g. 'sans 12')
APangoFontDescription := nil;
if (not IsDefault) and (CachedFont<>nil) then begin
Desc:=FontCache.FindADescriptor(UseFont);
if Desc<>nil then
APangoFontDescription := Desc.PangoFontDescription;
//DebugLn(['TGtkWidgetSet.UpdateDCTextMetric CachedFont Desc.PangoFontDescription=',GetPangoDescriptionReport(APangoFontDescription),' Desc.LongFontName=',Desc.LongFontName]);
end;
if APangoFontDescription=nil then
APangoFontDescription:=pango_context_get_font_description(APangoContext);
if APangoFontDescription=nil then
APangoFontDescription:=GetDefaultFontDesc(false);
if APangoFontDescription=nil then
DebugLn(['TGtkWidgetSet.UpdateDCTextMetric WARNING: no pango font description']);
//DebugLn(['TGtkWidgetSet.UpdateDCTextMetric APangoFontDescription=',GetPangoDescriptionReport(APangoFontDescription)]);
// get pango metrics (e.g. ascent, descent)
APangoMetrics := pango_context_get_metrics(APangoContext,
APangoFontDescription, APangoLanguage);
if APangoMetrics=nil then
DebugLn(['TGtkWidgetSet.UpdateDCTextMetric WARNING: no pango metrics']);
TextMetric.tmAveCharWidth := Max(1,
pango_font_metrics_get_approximate_char_width(APangoMetrics)
div PANGO_SCALE);
TextMetric.tmAscent := pango_font_metrics_get_ascent(APangoMetrics) div PANGO_SCALE;
TextMetric.tmDescent := pango_font_metrics_get_descent(APangoMetrics) div PANGO_SCALE;
TextMetric.tmHeight := TextMetric.tmAscent+TextMetric.tmDescent;
pango_layout_set_text(UseFont, PChar(TestString[IsDoubleByteChar]),
length(PChar(TestString[IsDoubleByteChar])));
pango_layout_get_extents(UseFont, nil, @aRect);
lBearing := PANGO_LBEARING(aRect) div PANGO_SCALE;
rBearing := PANGO_RBEARING(aRect) div PANGO_SCALE;
pango_layout_set_text(UseFont, 'M', 1);
pango_layout_get_pixel_size(UseFont, @aRect.width, @aRect.height);
TextMetric.tmMaxCharWidth := Max(1,aRect.width);
pango_layout_set_text(UseFont, 'W', 1);
pango_layout_get_pixel_size(UseFont, @aRect.width, @aRect.height);
TextMetric.tmMaxCharWidth := Max(TextMetric.tmMaxCharWidth,aRect.width);
pango_font_metrics_unref(APangoMetrics);
{$ENDIF}
(*debugln('TGtkWidgetSet.UpdateDCTextMetric A IsDoubleByteChar=',dbgs(IsDoubleByteChar),
' lbearing=',dbgs(lBearing),' rbearing=',dbgs(rBearing),
{$IFDEF Gtk1}
' width='+dbgs(width),
' AvgTxtLen='+dbgs(AvgTxtLen),
{$ENDIF}
' tmAscent='+dbgs(TextMetric.tmAscent),
' tmDescent='+dbgs(TextMetric.tmdescent),
' tmHeight='+dbgs(TextMetric.tmHeight),
' tmMaxCharWidth='+dbgs(TextMetric.tmMaxCharWidth),
' tmAveCharWidth='+dbgs(TextMetric.tmAveCharWidth));*)
if (CachedFont<>nil) then begin
CachedFont.lBearing:=lBearing;
CachedFont.rBearing:=rBearing;
CachedFont.IsDoubleByteChar:=IsDoubleByteChar;
CachedFont.IsMonoSpace:=IsMonoSpace;
CachedFont.TextMetric:=TextMetric;
CachedFont.MetricsValid:=true;
end;
end;
Flags := Flags + [dcfTextMetricsValid];
end;
end;
{$Ifdef GTK2}
{------------------------------------------------------------------------------
function TGtkWidgetSet.GetDefaultFontDesc(IncreaseReferenceCount: boolean
): PPangoFontDescription;
------------------------------------------------------------------------------}
function TGtkWidgetSet.GetDefaultFontDesc(IncreaseReferenceCount: boolean
): PPangoFontDescription;
begin
if FDefaultFontDesc = nil then begin
FDefaultFontDesc:=LoadDefaultFontDesc;
if FDefaultFontDesc = nil then
raise EOutOfResources.Create(rsUnableToLoadDefaultFont);
end;
Result:=FDefaultFontDesc;
if IncreaseReferenceCount then
Result := pango_font_description_copy(Result);
end;
{$Endif}
{------------------------------------------------------------------------------
function TGtkWidgetSet.GetDefaultGtkFont(IncreaseReferenceCount: boolean
): TGtkIntfFont;
------------------------------------------------------------------------------}
function TGtkWidgetSet.GetDefaultGtkFont(IncreaseReferenceCount: boolean
): TGtkIntfFont;
begin
if FDefaultFont = nil then begin
FDefaultFont:=LoadDefaultFont;
if FDefaultFont = nil then
raise EOutOfResources.Create(rsUnableToLoadDefaultFont);
ReferenceGtkIntfFont(FDefaultFont); // mark as used globally
end;
Result:=FDefaultFont;
if IncreaseReferenceCount then
ReferenceGtkIntfFont(Result); // mark again
end;
function TGTKWidgetSet.GetGtkFont(DC: TGtkDeviceContext): TGtkIntfFont;
begin
{$IFDEF Gtk}
if (DC.CurrentFont = nil) or (DC.CurrentFont^.GDIFontObject = nil)
then begin
Result := GetDefaultGtkFont(false);
end
else begin
Result := DC.CurrentFont^.GDIFontObject;
end;
{$ELSE}
// create font if needed
Result:=DC.GetFont^.GDIFontObject;
{$ENDIF}
end;
function TGtkWidgetSet.CreateRegionCopy(SrcRGN: hRGN): hRGN;
var
GDIObject: PGDIObject;
begin
GDIObject := NewGDIObject(gdiRegion);
GDIObject^.GDIRegionObject:=gdk_region_copy(PGdiObject(SrcRGN)^.GDIRegionObject);
Result := hRgn(PtrUInt(GDIObject));
end;
function TGtkWidgetSet.DCClipRegionValid(DC: HDC): boolean;
var
CurClipRegion: hRGN;
begin
Result:=false;
if not IsValidDC(DC) then exit;
CurClipRegion:=HRGN(PtrUInt(TGtkDeviceContext(DC).ClipRegion));
if (CurClipRegion<>0) and (not IsValidGDIObject(CurClipRegion)) then exit;
Result:=true;
end;
function TGtkWidgetSet.CreateEmptyRegion: hRGN;
var
GObject: PGdiObject;
begin
GObject := NewGDIObject(gdiRegion);
GObject^.GDIRegionObject := gdk_region_new;
Result := HRGN(PtrUInt(GObject));
//DebugLn('TGtkWidgetSet.CreateEmptyRgn A RGN=',DbgS(Result));
end;
{------------------------------------------------------------------------------
Function: SetRCFilename
Params: const AValue: string
Returns: none
Sets the gtk resource file and parses it.
------------------------------------------------------------------------------}
procedure TGtkWidgetSet.SetRCFilename(const AValue: string);
begin
if (FRCFilename=AValue) then exit;
FRCFilename:=AValue;
FRCFileParsed:=false;
ParseRCFile;
end;
{------------------------------------------------------------------------------
procedure TGtkWidgetSet.CheckRCFilename;
Sets the gtk resource file and parses it.
------------------------------------------------------------------------------}
procedure TGtkWidgetSet.CheckRCFilename;
begin
if FRCFileParsed and (FRCFilename<>'') and FileExistsUTF8(FRCFilename)
and (FileAgeUTF8(FRCFilename)<>FRCFileAge) then
FRCFileParsed:=false;
end;
{------------------------------------------------------------------------------
Function: ParseRCFile
Params: const AValue: string
Returns: none
Sets the gtk resource file and parses it.
------------------------------------------------------------------------------}
procedure TGtkWidgetSet.ParseRCFile;
begin
if (not FRCFileParsed)
and (FRCFilename<>'') and FileExistsUTF8(FRCFilename) then
begin
gtk_rc_parse(PChar(FRCFilename));
FRCFileParsed:=true;
FRCFileAge:=FileAgeUTF8(FRCFilename);
end;
end;
{------------------------------------------------------------------------------
Function: SetClipboardWidget
Params: TargetWidget: PGtkWidget - This widget will be connected to all
clipboard signals which are all handled by the TGtkWidgetSet
itself.
Returns: none
All supported targets are added to the new widget. This way, no one,
especially not the lcl, will notice the change. ;)
------------------------------------------------------------------------------}
procedure TGtkWidgetSet.SetClipboardWidget(TargetWidget: PGtkWidget);
type
TGtkTargetSelectionList = record
Selection: Cardinal;
List: PGtkTargetList;
end;
PGtkTargetSelectionList = ^TGtkTargetSelectionList;
const
gtk_selection_handler_key: PChar = 'gtk-selection-handlers';
{$IFDEF DEBUG_CLIPBOARD}
function gtk_selection_target_list_get(Widget: PGtkWidget;
ClipboardType: TClipboardType): PGtkTargetList;
var
SelectionLists, CurSelList: PGList;
TargetSelList: PGtkTargetSelectionList;
begin
SelectionLists := gtk_object_get_data (PGtkObject(Widget),
gtk_selection_handler_key);
CurSelList := SelectionLists;
while (CurSelList<>nil) do begin
TargetSelList := CurSelList^.Data;
if (TargetSelList^.Selection = ClipboardTypeAtoms[ClipboardType]) then
begin
Result:=TargetSelList^.List;
exit;
end;
CurSelList := CurSelList^.Next;
end;
Result:=nil;
end;
procedure WriteTargetLists(Widget: PGtkWidget);
var c: TClipboardType;
TargetList: PGtkTargetList;
TmpList: PGList;
Pair: PGtkTargetPair;
begin
DebugLn(' WriteTargetLists WWW START');
for c:=Low(TClipboardType) to High(TClipboardType) do begin
TargetList:=gtk_selection_target_list_get(Widget,c);
DebugLn(' WriteTargetLists WWW ',ClipboardTypeName[c],' ',dbgs(TargetList<>nil));
if TargetList<>nil then begin
TmpList:=TargetList^.List;
while TmpList<>nil do begin
Pair:=PGtkTargetPair(TmpList^.Data);
DebugLn(' WriteTargetLists BBB ',dbgs(Pair^.Target),' ',GdkAtomToStr(Pair^.Target));
TmpList:=TmpList^.Next;
end;
end;
end;
DebugLn(' WriteTargetLists WWW END');
end;
{$ENDIF}
procedure ClearTargetLists(Widget: PGtkWidget);
// MG: Reading in gtk internals is dirty, but there seems to be no other way
// to clear the old target lists
var
SelectionLists: PGList;
{$ifdef gtk1}
CurSelList: PGList;
TargetSelList: PGtkTargetSelectionList;
{$else}
CurClipboard: TClipboardType;
{$endif}
begin
{$IFDEF DEBUG_CLIPBOARD}
DebugLn(' ClearTargetLists WWW START');
{$ENDIF}
{$ifdef gtk1}
SelectionLists := gtk_object_get_data (PGtkObject(Widget),
gtk_selection_handler_key);
CurSelList := SelectionLists;
while (CurSelList<>nil) do
begin
TargetSelList := CurSelList^.Data;
gtk_target_list_unref(TargetSelList^.List);
g_free(TargetSelList);
CurSelList := CurSelList^.Next;
end;
g_list_free(SelectionLists);
{$else}
// clear 3 selections
for CurClipboard := Low(TClipboardType) to High(CurClipboard) do
gtk_selection_clear_targets(Widget, ClipboardTypeAtoms[CurClipboard]);
SelectionLists := gtk_object_get_data(PGtkObject(Widget),
gtk_selection_handler_key);
if SelectionLists <> nil then
g_list_free(SelectionLists);
{$endif}
gtk_object_set_data (PGtkObject(Widget), gtk_selection_handler_key, GtkNil);
{$IFDEF DEBUG_CLIPBOARD}
DebugLn(' ClearTargetLists WWW END');
{$ENDIF}
end;
var c: TClipboardType;
begin
if ClipboardWidget=TargetWidget then exit;
{$IFDEF DEBUG_CLIPBOARD}
DebugLn('[TGtkWidgetSet.SetClipboardWidget] ',dbgs(ClipboardWidget<>nil),' -> ',dbgs(TargetWidget<>nil),' ',GetWidgetDebugReport(TargetWidget));
{$ENDIF}
if ClipboardWidget<>nil then begin
{$IFDEF DEBUG_CLIPBOARD}
WriteTargetLists(ClipboardWidget);
{$ENDIF}
ClearTargetLists(ClipboardWidget);
{$IFDEF DEBUG_CLIPBOARD}
WriteTargetLists(ClipboardWidget);
{$ENDIF}
end;
ClipboardWidget:=TargetWidget;
if ClipboardWidget<>nil then begin
// connect widget to all clipboard signals
g_signal_connect(PGtkObject(ClipboardWidget),'selection_received',
TGTKSignalFunc(@ClipboardSelectionReceivedHandler),GtkNil);
g_signal_connect(PGtkObject(ClipboardWidget),'selection_get',
TGTKSignalFunc(@ClipboardSelectionRequestHandler),GtkNil);
g_signal_connect(PGtkObject(ClipboardWidget),'selection_clear_event',
TGTKSignalFunc(@ClipboardSelectionLostOwnershipHandler),GtkNil);
// add all supported targets for all clipboard types
for c:=Low(TClipboardType) to High(TClipboardType) do begin
if (ClipboardTargetEntries[c]<>nil) then begin
//DebugLn('TGtkWidgetSet.SetClipboardWidget ',GdkAtomToStr(ClipboardTypeAtoms[c]),' Entries=',dbgs(ClipboardTargetEntryCnt[c]));
gtk_selection_add_targets(ClipboardWidget,ClipboardTypeAtoms[c],
ClipboardTargetEntries[c],ClipboardTargetEntryCnt[c]);
end;
end;
{$IFDEF DEBUG_CLIPBOARD}
WriteTargetLists(ClipboardWidget);
{$ENDIF}
end;
end;
{------------------------------------------------------------------------------
procedure TGtkWidgetSet.WordWrap(AText: PChar; MaxWidthInPixel: integer;
var Lines: PPChar; var LineCount: integer); virtual;
Breaks AText into several lines and creates a list of PChar. The last entry
will be nil.
Lines break at new line chars and at spaces if a line is longer than
MaxWidthInPixel or in a word.
Lines will be one memory block so that you can free the list and all lines
with FreeMem(Lines).
------------------------------------------------------------------------------}
procedure TGtkWidgetSet.WordWrap(DC: HDC; AText: PChar;
MaxWidthInPixel: integer; var Lines: PPChar; var LineCount: integer);
var
UseFont: TGtkIntfFont;
function GetLineWidthInPixel(LineStart, LineLen: integer): integer;
var
width: LongInt;
begin
GetTextExtentIgnoringAmpersands(UseFont, @AText[LineStart], LineLen,
nil, nil, @width, nil, nil);
Result:=Width;
end;
function FindLineEnd(LineStart: integer): integer;
var
CharLen,
LineStop,
LineWidth, WordWidth, WordEnd, CharWidth: integer;
begin
// first search line break or text break
Result:=LineStart;
while not (AText[Result] in [#0,#10,#13]) do inc(Result);
if Result<=LineStart+1 then exit;
lineStop:=Result;
// get current line width in pixel
LineWidth:=GetLineWidthInPixel(LineStart,Result-LineStart);
if LineWidth>MaxWidthInPixel then begin
// line too long
// -> add words till line size reached
LineWidth:=0;
WordEnd:=LineStart;
WordWidth:=0;
repeat
Result:=WordEnd;
inc(LineWidth,WordWidth);
// find word start
while AText[WordEnd] in [' ',#9] do inc(WordEnd);
// find word end
while not (AText[WordEnd] in [#0,' ',#9,#10,#13]) do inc(WordEnd);
// calculate word width
WordWidth:=GetLineWidthInPixel(Result,WordEnd-Result);
until LineWidth+WordWidth>MaxWidthInPixel;
if LineWidth=0 then begin
// the first word is longer than the maximum width
// -> add chars till line size reached
Result:=LineStart;
LineWidth:=0;
repeat
charLen:=UTF8CodepointSize(@AText[result]);
CharWidth:=GetLineWidthInPixel(Result,charLen);
inc(LineWidth,CharWidth);
if LineWidth>MaxWidthInPixel then break;
if result>=lineStop then break;
inc(Result,charLen);
until false;
// at least one char
if Result=LineStart then begin
charLen:=UTF8CodepointSize(@AText[result]);
inc(Result,charLen);
end;
end;
end;
end;
function IsEmptyText: boolean;
begin
if (AText=nil) or (AText[0]=#0) then begin
// no text
GetMem(Lines,SizeOf(PChar));
Lines[0]:=nil;
LineCount:=0;
Result:=true;
end else
Result:=false;
end;
procedure InitFont;
begin
UseFont:=GetGtkFont(TGtkDeviceContext(DC));
end;
var
LinesList: TFPList;
LineStart, LineEnd, LineLen: integer;
ArraySize, TotalSize: integer;
i: integer;
CurLineEntry: PPChar;
CurLineStart: PChar;
begin
if IsEmptyText then exit;
InitFont;
LinesList:=TFPList.Create;
LineStart:=0;
// find all line starts and line ends
repeat
LinesList.Add(Pointer(PtrInt(LineStart)));
// find line end
LineEnd:=FindLineEnd(LineStart);
LinesList.Add(Pointer(PtrInt(LineEnd)));
// find next line start
LineStart:=LineEnd;
if AText[LineStart] in [#10,#13] then begin
// skip new line chars
inc(LineStart);
if (AText[LineStart] in [#10,#13])
and (AText[LineStart]<>AText[LineStart-1]) then
inc(LineStart);
end else if AText[LineStart] in [' ',#9] then begin
// skip space
while AText[LineStart] in [' ',#9] do
inc(LineStart);
end;
until AText[LineStart]=#0;
// create mem block for 'Lines': array of PChar + all lines
LineCount:=LinesList.Count shr 1;
ArraySize:=(LineCount+1)*SizeOf(PChar);
TotalSize:=ArraySize;
i:=0;
while i<LinesList.Count do begin
// add LineEnd - LineStart + 1 for the #0
LineLen:=PtrUInt(LinesList[i+1])-PtrUInt(LinesList[i])+1;
inc(TotalSize,LineLen);
inc(i,2);
end;
GetMem(Lines,TotalSize);
FillChar(Lines^,TotalSize,0);
// create Lines
CurLineEntry:=Lines;
CurLineStart:=PChar(CurLineEntry)+ArraySize;
i:=0;
while i<LinesList.Count do begin
// set the pointer to the start of the current line
CurLineEntry[i shr 1]:=CurLineStart;
// copy the line
LineStart:=integer(PtrUInt(LinesList[i]));
LineEnd:=integer(PtrUInt(LinesList[i+1]));
LineLen:=LineEnd-LineStart;
if LineLen>0 then
Move(AText[LineStart],CurLineStart^,LineLen);
inc(CurLineStart,LineLen);
// add #0 as line end
CurLineStart^:=#0;
inc(CurLineStart);
// next line
inc(i,2);
end;
if PtrUInt(CurLineStart)-PtrUInt(Lines)<>TotalSize then
RaiseGDBException('TGtkWidgetSet.WordWrap Consistency Error:'
+' Lines+TotalSize<>CurLineStart');
CurLineEntry[i shr 1]:=nil;
LinesList.Free;
end;
function TGtkWidgetSet.ForceLineBreaks(DC: hDC; Src: PChar;
MaxWidthInPixels: Longint;
ConvertAmpersandsToUnderScores: Boolean) : PChar;
var
Lines : PPChar;
I, NumLines : Longint;
TmpStr : PGString;
Line : PgChar;
begin
TmpStr := nil;
WordWrap(DC, Src, MaxWidthInPixels, Lines, NumLines);
For I := 0 to NumLines - 1 do begin
If TmpStr <> nil then
g_string_append_c(TmpStr, #10);
If ConvertAmpersandsToUnderScores then begin
Line := Ampersands2Underscore(Lines[I]);
If Line <> nil then begin
If TmpStr <> nil then begin
g_string_append(TmpStr, Line);
end
else
TmpStr := g_string_new(Line);
StrDispose(Line);
end;
end
else begin
If Lines[I] <> nil then
If TmpStr <> nil then
g_string_append(TmpStr, Lines[I])
else
TmpStr := g_string_new(Lines[I]);
end;
end;
ReallocMem(Lines, 0);
If TmpStr <> nil then
Result := StrNew(TmpStr^.str)
else
Result:=nil;
end;
{$IFDEF ASSERT_IS_ON}
{$UNDEF ASSERT_IS_ON}
{$C-}
{$ENDIF}
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