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lazarus/lcl/interfaces/gtk/gtkcallback.inc

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{%MainUnit gtkproc.pp}
{
*****************************************************************************
* *
* This file is part of the Lazarus Component Library (LCL) *
* *
* See the file COPYING.modifiedLGPL.txt, included in this distribution, *
* for details about the copyright. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. *
* *
*****************************************************************************
}
{$IFOPT C-}
// Uncomment for local trace
// {$C+}
// {$DEFINE ASSERT_IS_ON}
{$ENDIF}
{$IFDEF RELEASE}
{$DEFINE ASSERT_IS_ON}
{$ELSE}
{.$DEFINE EventTrace}
{$ENDIF}
function DoDeliverPaintMessage(const Target: TObject; var PaintMsg: TLMPaint): PtrInt;
{$ifndef gtk1}
var
WidgetInfo: PWidgetInfo;
{$endif}
begin
{
erase backgound of custom controls
use only for real custom controls for gtk1 - that are GTKAPIWidget
}
if (TObject(Target) is TCustomControl)
{$ifdef gtk1}
and GtkWidgetIsA(PGtkWidget(TCustomControl(Target).Handle), GTKAPIWidget_Type)
and not (wwiNoEraseBkgnd in GetWidgetInfo(PGtkWidget(TCustomControl(Target).Handle))^.Flags)
{$endif}
then begin
Include(TWinControlAccess(Target).FWinControlFlags, wcfEraseBackground);
TWinControl(Target).Perform(LM_ERASEBKGND, PaintMsg.DC, 0);
Exclude(TWinControlAccess(Target).FWinControlFlags, wcfEraseBackground);
end;
Result := DeliverMessage(Target, PaintMsg);
{$ifndef gtk1}
if (TObject(Target) is TCustomControl) then begin
WidgetInfo := GetWidgetInfo(PGtkWidget(TCustomControl(Target).Handle), False);
if WidgetInfo <> nil then
WidgetInfo^.UpdateRect := Rect(0,0,0,0);
end;
{$endif}
end;
function DeliverPaintMessage(const Target: Pointer; var TheMessage): GBoolean;
var
PaintMsg: TLMPaint;
begin
if TLMessage(TheMessage).Msg = LM_GTKPAINT then
PaintMsg := GtkPaintMessageToPaintMessage(TLMGtkPaint(TheMessage), True)
else
PaintMsg := TLMPaint(TheMessage);
Result := DoDeliverPaintMessage(TObject(Target), PaintMsg) = 0;
FinalizePaintMessage(PLMessage(@PaintMsg));
end;
{-------------------------------------------------------------------------------
function DeliverPostMessage(const Target: Pointer; var TheMessage): GBoolean;
'TheMessage' is in TLMessage format. Don't confuse this with tagMsg.
--------------------------------------------------------------------------------}
function DeliverPostMessage(const Target: Pointer; var TheMessage): GBoolean;
begin
if TObject(Target) is TWinControl then
begin
// convert TLMessage into a tagMsg and push on the message queue
Result := PostMessage(TWinControl(Target).Handle,
TLMessage(TheMessage).Msg,
TLMessage(TheMessage).WParam,
TLMessage(TheMessage).LParam
);
end
else
begin
if TLMessage(TheMessage).Msg <> LM_GTKPAINT then
Result := DeliverMessage(Target, TheMessage) = 0
else
Result := DeliverPaintMessage(Target, TheMessage);
end;
end;
function DeliverGtkPaintMessage(Target: Pointer; Widget: PGtkWidget;
Area: PGDKRectangle; RepaintAll, IsAfterGtk: boolean): GBoolean;
{$IFDEF Gtk2}
// the gtk2 has a working double buffering and expose event area
{$DEFINE DirectPaintMsg}
{$ENDIF}
var
Msg: TLMGtkPaint;
begin
//DebugLn(['DeliverGtkPaintMessage ',DbgSName(TObject(Target)),' Widget=',GetWidgetDebugReport(Widget),' RepaintAll=',RepaintAll,' AfterGtk=',IsAfterGtk,' Area=',dbgs(Area)]);
{$IFDEF Gtk2}
// default is, that a control receives the paint message after gtk (including the child paints)
// In case of TCustomControl, there is no gtk painting only the
// child paintings. Let the TCustomControl paint the background.
// ToDo: Eventually there must be a 'before paint message'.
if IsAfterGtk then
begin
if TObject(Target) is TCustomControl then exit(false);
end else
begin
if not (TObject(Target) is TCustomControl) then exit(false);
end;
{$ENDIF}
if (not RepaintAll) and ((Area^.Width<1) or (Area^.Height<1)) then exit(false);
Msg.Msg := LM_GTKPAINT;
Msg.Data := TLMGtkPaintData.Create;
Msg.Data.Widget := Widget;
Msg.Data.State := GtkPaint_LCLWidget;
Msg.Data.Rect := Bounds(Area^.x, Area^.y, Area^.Width, Area^.Height);
Msg.Data.RepaintAll := RepaintAll;
{$IFDEF DirectPaintMsg}
Result := DeliverPaintMessage(Target, Msg);
{$ELSE}
Result := DeliverPostMessage(Target, Msg);
{$ENDIF}
end;
procedure EventTrace(const TheMessage : string; data : pointer);
begin
// if Data = nil then
//DebugLn(Format('Trace:Event [%s] fired',[Themessage]))
// else
//DebugLn(Format('Trace:Event [%s] fired for %s', [TheMessage, TObject(data).Classname]));
end;
{*************************************************************}
{ callback routines }
{*************************************************************}
{-------------------------------------------------------------------------------
function gtkNoteBookCloseBtnClicked
Params: Widget: PGtkWidget; Data: Pointer
Result: GBoolean
gtkNoteBookCloseBtnClicked is called by the gtk, whenever a close button in
the tab of a notebook page is clicked.
-------------------------------------------------------------------------------}
function gtkNoteBookCloseBtnClicked(Widget: PGtkWidget;
Data: Pointer): GBoolean; cdecl;
var APage: TCustomPage;
begin
Result:=true; // handled = true
if Widget=nil then ;
if ComponentIsDestroyingHandle(TWinControl(Data)) then exit;
APage:=TCustomPage(Data);
TCustomTabControl(APage.Parent).DoCloseTabClicked(APage);
end;
function FilterFuc(xevent: PGdkXEvent; event: PGdkEvent; data: gpointer): TGdkFilterReturn; cdecl;
var
AForm: TCustomForm absolute data;
begin
Result := GDK_FILTER_CONTINUE;
{$ifdef windows}
if (PMSG(xevent)^.message = WM_NCLBUTTONDOWN) and
(PMSG(xevent)^.wParam = HTCAPTION) and
not (csDesigning in AForm.ComponentState) and
(TWinControlAccess(TWinControl(AForm)).DragKind = dkDock) and
(TWinControlAccess(TWinControl(AForm)).DragMode = dmAutomatic) then
begin
AForm.BeginDrag(True);
Result := GDK_FILTER_REMOVE;
end;
{$endif}
end;
{-------------------------------------------------------------------------------
function GTKRealizeCB
Params: Widget: PGtkWidget; Data: Pointer
Result: GBoolean
GTKRealizeCB is called by the gtk, whenever a widget is realized (ie mapped),
but before the widget itself gets the realize signal.
That means that the gdk window on the xserver has been created.
-------------------------------------------------------------------------------}
function gtkRealizeCB(Widget: PGtkWidget; Data: Pointer): GBoolean; cdecl;
var
decor,Func : Longint;
TheWindow: PGdkWindow;
TheForm: TCustomForm;
begin
Result := CallBackDefaultReturn;
{$IFDEF EventTrace}
EventTrace('realize', nil);
{$ENDIF}
if (Data<>nil) then begin
if TObject(Data) is TCustomForm then begin
TheForm:=TCustomForm(Data);
if TheForm.Parent=nil then begin
TheWindow:=gtk_widget_get_toplevel(Widget)^.window;
//apart from none and sizeable, this will
//only work if WM supports motif flags
//properly, which very few actually do.
Decor := GetWindowDecorations(TheForm);
Func := GetWindowFunction(TheForm);
gdk_window_set_decorations(TheWindow, decor);
gdk_window_set_functions(TheWindow, func);
{$ifdef windows} // for drag/dock
gdk_window_add_filter(TheWindow, @FilterFuc, TheForm)
{$endif}
end;
end;
if (csDesigning in TComponent(Data).ComponentState) then begin
//DebugLn(['gtkRealizeCB ',dbgsName(TComponent(Data)),' ',GetWidgetDebugReport(Widget)]);
end else begin
RealizeAccelerator(TComponent(Data),Widget);
end;
end;
end;
{-------------------------------------------------------------------------------
function GTKRealizeAfterCB
Params: Widget: PGtkWidget; Data: Pointer
Result: GBoolean
GTKRealizeAfterCB is called by the gtk, whenever a widget is realized
(ie mapped), and after the widget itself got the realize signal.
That means that the gdk window on the xserver has been created and the widget
initialized the gdkwindow. This function is used for the second part of
the initialization of a widget.
-------------------------------------------------------------------------------}
function gtkRealizeAfterCB(Widget: PGtkWidget; Data: Pointer): GBoolean; cdecl;
var
WinWidgetInfo: PWinWidgetInfo;
HiddenLCLObject, LCLObject: TObject;
NewEventMask: TGdkEventMask;
TheWinControl: TWinControl;
ClientWidget: PGtkWidget;
MainWidget: PGtkWidget;
begin
Result := CallBackDefaultReturn;
//DebugLn(['gtkRealizeAfterCB ',GetWidgetDebugReport(Widget)]);
if Data=nil then ;
{$IFDEF EventTrace}
EventTrace('realizeafter', nil);
{$ENDIF}
HiddenLCLObject:=GetHiddenLCLObject(Widget);
if HiddenLCLObject=nil then begin
// this is a normal lcl wigdet
MainWidget:=GetMainWidget(Widget);
if MainWidget=nil then
MainWidget:=Widget;
WinWidgetInfo:=GetWidgetInfo(MainWidget,true);
LCLObject:=GetLCLObject(MainWidget);
if (LCLObject<>nil) and (WinWidgetInfo<>nil) then begin
ClientWidget:=GetFixedWidget(Widget);
if (LCLObject is TWinControl) then
TheWinControl:=TWinControl(LCLObject)
else
TheWinControl:=nil;
// set extra signal masks after the widget window is created
// define extra events we're interrested in
//write('GTKRealizeAfterCB ');
//if TheWinControl<>nil then DbgOut(' ',TheWinControl.Name,':',TheWinControl.ClassName,' ',DbgS(TheWinControl.Handle));
//DebugLn(' Widget=',DbgS(Widget),' Fixed=',DbgS(GetFixedWidget(Widget)),' Main=',DbgS(GetMainWidget(Widget)));
if (TheWinControl<>nil) then begin
//DebugLn(['gtkRealizeAfterCB ',GetWidgetDebugReport(Widget)]);
{$IFDEF DebugGDK}BeginGDKErrorTrap;{$ENDIF}
NewEventMask:=gdk_window_get_events(GetControlWindow(Widget))
or WinWidgetInfo^.EventMask;
{$IFNDEF Gtk1}
gtk_widget_add_events(Widget,NewEventMask);
{$ENDIF}
gdk_window_set_events(GetControlWindow(Widget),NewEventMask);
if (ClientWidget<>nil) and (GetControlWindow(ClientWidget)<>nil)
and (GetControlWindow(ClientWidget)<>GetControlWindow(Widget)) then begin
//DebugLn(['gtkRealizeAfterCB ClientWindow<>Window']);
NewEventMask:=gdk_window_get_events(GetControlWindow(ClientWidget))
or WinWidgetInfo^.EventMask;
{$IFNDEF Gtk1}
gtk_widget_add_events(ClientWidget,WinWidgetInfo^.EventMask);
{$ENDIF}
gdk_window_set_events(GetControlWindow(ClientWidget),NewEventMask);
end;
//DebugLn('BBB1 ',DbgS(NewEventMask),8),' ',DbgS(Cardinal(gdk_window_get_events(Widget^.Window)));
{$IFDEF DebugGDK}EndGDKErrorTrap;{$ENDIF}
end;
if TheWinControl<>nil then
begin
TheWinControl.CNPreferredSizeChanged;
TGtkPrivateWidgetClass(TheWinControl.WidgetSetClass.WSPrivate).UpdateCursor(WinWidgetInfo);
ConnectInternalWidgetsSignals(MainWidget,TheWinControl);
if TheWinControl is TCustomPage then
UpdateNotebookPageTab(nil,TheWinControl);
if TheWinControl is TCustomForm then
SetFormShowInTaskbar(TCustomForm(TheWinControl),
TCustomForm(TheWinControl).ShowInTaskbar);
end;
end;
end else begin
// this is a hidden child widget of a lcl widget
if HiddenLCLObject is TWinControl then
ConnectInternalWidgetsSignals(Widget,TWinControl(HiddenLCLObject));
end;
end;
function gtkshowCB( widget: PGtkWidget; data: gPointer) : GBoolean; cdecl;
var
Mess : TLMShowWindow;
begin
Result := True;
{$IFDEF EventTrace}
EventTrace('show', data);
{$ENDIF}
if Widget=nil then ;
FillChar(Mess,SizeOf(Mess),0);
Mess.Msg := LM_SHOWWINDOW;
Mess.Show := True;
Result := DeliverMessage(Data, Mess) = 0;
end;
function gtkHideCB( widget: PGtkWidget; data: gPointer) : GBoolean; cdecl;
var
Mess : TLMShowWindow;
begin
Result := True;
{$IFDEF EventTrace}
EventTrace('hide', data);
{$ENDIF}
if Widget=nil then ;
FillChar(Mess,SizeOf(Mess),0);
Mess.Msg := LM_SHOWWINDOW;
Mess.Show := False;
Result := DeliverMessage(Data, Mess) = 0;
end;
function gtkactivateCB(widget: PGtkWidget; data: gPointer) : GBoolean; cdecl;
var
Mess: TLMActivate;
begin
Result:= True;
{$IFDEF EventTrace}
EventTrace('activate', data);
{$ENDIF}
ResetDefaultIMContext;
if LockOnChange(PgtkObject(Widget),0) > 0 then Exit;
FillChar(Mess, SizeOf(Mess), #0);
Mess.Msg := LM_ACTIVATE;
Mess.Active := WA_ACTIVE;
Mess.Minimized := False;
if GtkWidgetIsA(Widget, gtk_window_get_type) then
Mess.ActiveWindow:=HWnd(PtrUInt(PGTKWindow(Widget)^.focus_widget))
else
Mess.ActiveWindow := 0;
Mess.Result := 0;
//DebugLn('gtkactivateCB ',DbgSName(TObject(Data)));
DeliverMessage(Data, Mess);
Result := CallBackDefaultReturn;
end;
function GTKCheckMenuToggeledCB(AMenuItem: PGTKCheckMenuItem; AData: gPointer): GBoolean; cdecl;
// AData --> LCLMenuItem
var
LCLMenuItem: TMenuItem;
begin
Result := CallBackDefaultReturn;
{$IFDEF EventTrace}
EventTrace('toggled', AData);
{$ENDIF}
LCLMenuItem := TMenuItem(AData);
// some sanity checks
if LCLMenuItem = nil then Exit;
if not LCLMenuItem.IsCheckItem then Exit; // ???
// the gtk always toggles the check flag
// -> restore 'checked' flag if needed
if gtk_check_menu_item_get_active(AMenuItem) = LCLMenuItem.Checked then Exit;
if LCLMenuItem.AutoCheck then Exit;
// restore it
LockOnChange(PgtkObject(AMenuItem), +1);
gtk_check_menu_item_set_active(AMenuItem, LCLMenuItem.Checked);
LockOnChange(PgtkObject(AMenuItem), -1);
end;
function gtkchangedCB( widget: PGtkWidget; data: gPointer) : GBoolean; cdecl;
var
Mess : TLMessage;
begin
Result := CallBackDefaultReturn;
if ComponentIsDestroyingHandle(TWinControl(Data))
or (LockOnChange(PgtkObject(Widget),0)>0) then exit;
{$IFDEF EventTrace}
EventTrace('changed', data);
{$ENDIF}
FillChar(Mess, SizeOf(Mess), 0);
Mess.Msg := LM_CHANGED;
DeliverMessage(Data, Mess);
end;
function gtkchanged_editbox( widget: PGtkWidget; data: gPointer) : GBoolean; cdecl;
var
Mess : TLMessage;
{$IFDEF GTK2}
GStart, GEnd: gint;
Info: PWidgetInfo;
EntryText: PgChar;
{$ENDIF}
begin
Result := CallBackDefaultReturn;
if LockOnChange(PgtkObject(Widget),0)>0 then exit;
{$IFDEF EventTrace}
EventTrace('changed_editbox', data);
{$ENDIF}
if GTK_IS_ENTRY(Widget) then
begin
{cheat GtkEditable to update cursor pos in gtkEntry. issue #7243}
{$IFDEF GTK1}
{under gtk1 we have not text_width & backspace signal
so we cannot reach our goal like in gtk2 case.
IMHO, better to leave as bug than as partial bug
since pressing bkspace or delete always move
cursor pos to last pos (text width) or positioning
inside text by mouse click and then start typing
also makes a mess.
GStart := PGtkOldEditable(Widget)^.selection_start_pos;
GEnd := PGtkOldEditable(Widget)^.selection_end_pos;
if (GStart = GEnd) then
gtk_editable_set_position(PGtkEditable(Widget), -1);
}
{$ELSE}
gtk_editable_get_selection_bounds(PGtkEditable(Widget), @GStart, @GEnd);
EntryText := gtk_entry_get_text(PGtkEntry(Widget));
if (GStart = GEnd) and
(UTF8Length(EntryText) >= PGtkEntry(Widget)^.text_length) then
begin
Info := GetWidgetInfo(Widget, False);
{do not update position if backspace or delete pressed}
if wwiInvalidEvent in Info^.Flags then
exclude(Info^.Flags, wwiInvalidEvent)
else
gtk_editable_set_position(PGtkEditable(Widget), GStart + 1);
end;
{$ENDIF}
end;
FillByte(Mess,SizeOf(Mess),0);
Mess.Msg := CM_TEXTCHANGED;
DeliverMessage(Data, Mess);
end;
{$IFDEF GTK2}
function gtkchanged_spinbox(widget: PGtkWidget; data: gPointer): GBoolean; cdecl;
begin
Result := CallBackDefaultReturn;
if LockOnChange(PgtkObject(Widget),0) > 0 then exit;
if GTK_IS_SPIN_BUTTON(Widget) then
gtk_spin_button_update(PGtkSpinButton(Widget));
end;
function gtkchanged_editbox_backspace(widget: PGtkWidget;
data: gPointer): GBoolean; cdecl;
var
GStart, GEnd: gint;
Info: PWidgetInfo;
EntryText: PgChar;
begin
Result := CallBackDefaultReturn;
if GTK_IS_ENTRY(Widget) then
begin
gtk_editable_get_selection_bounds(PGtkEditable(Widget), @GStart, @GEnd);
EntryText := gtk_entry_get_text(PGtkEntry(Widget));
if (GStart = GEnd) and (GStart > 0) and
(UTF8Length(EntryText) = PGtkEntry(Widget)^.text_length) then
begin
{mark as invalid event for gtkchanged_editbox, so
it doesn't update cursor pos or we have a mess.}
if (gtk_major_version = 2) and (gtk_minor_version < 17) then
begin
Info := GetWidgetInfo(Widget, False);
include(Info^.Flags, wwiInvalidEvent);
end;
PGtkEntry(Widget)^.current_pos := GStart - 1;
end;
end;
end;
function gtkchanged_editbox_delete(widget: PGtkWidget;
AType: TGtkDeleteType; APos: gint; data: gPointer): GBoolean; cdecl;
var
Info: PWidgetInfo;
begin
Result := CallBackDefaultReturn;
Info := GetWidgetInfo(Widget, False);
include(Info^.Flags, wwiInvalidEvent);
end;
{$ENDIF}
function gtkdaychanged(Widget: PGtkWidget; data: gPointer) : GBoolean; cdecl;
var
MSG: TLMessage;
begin
Result := CallBackDefaultReturn;
if LockOnChange(PgtkObject(Widget),0)>0 then exit;
EventTrace('day changed', data);
MSG.Msg := LM_DAYCHANGED;
DeliverPostMessage(Data, MSG);
Result := CallBackDefaultReturn;
end;
function gtktoggledCB( widget: PGtkWidget; data: gPointer): GBoolean; cdecl;
var
Mess : TLMessage;
procedure ChangeCheckbox(AGrayed,AChecked: boolean);
begin
LockOnChange(PgtkObject(Widget),1);
{$IFDEF GTK1}
if AGrayed then
gtk_object_set_data(PgtkObject(Widget), 'Grayed', Widget)
else
gtk_object_set_data(PgtkObject(Widget), 'Grayed', nil);
{$ENDIF}
{$IFDEF GTK2}
gtk_toggle_button_set_Inconsistent(PGtkToggleButton(Widget), AGrayed);
{$ENDIF}
gtk_toggle_button_set_active(PGtkToggleButton(Widget), AChecked);
LockOnChange(PgtkObject(Widget),-1);
end;
begin
//DebugLn('gtktoggledCB ',DbgSName(TObject(Data)));
Result := CallBackDefaultReturn;
{$IFDEF EventTrace}
EventTrace('toggled', data);
{$ENDIF}
if LockOnChange(PgtkObject(Widget),0) > 0 then Exit;
if GtkWidgetIsA(Widget,gtk_toggle_button_get_type) then begin
if TObject(Data) is TCustomCheckbox then begin
{$IFDEF GTK1}
if gtk_object_get_data(PgtkObject(Widget), 'Grayed')<>nil then
ChangeCheckbox(false, true)
else
if TCustomCheckbox(Data).AllowGrayed and
gtk_toggle_button_get_active(PGtkToggleButton(Widget)) then
ChangeCheckbox(true, false);
{$ENDIF}
{$IFDEF GTK2}
if gtk_toggle_button_get_inconsistent(PGtkToggleButton(Widget)) then
ChangeCheckbox(false, true)
else
if TCustomCheckbox(Data).AllowGrayed and
gtk_toggle_button_get_active(PGtkToggleButton(Widget)) then
ChangeCheckbox(true, false);
{$ENDIF}
end;
end;
Mess.Msg := LM_CHANGED;
Mess.Result := 0;
DeliverMessage(Data, Mess);
//DebugLn('gtktoggledCB END ',DbgSName(TObject(Data)));
end;
{$Ifdef GTK1}
function gtkDrawCB(Widget: PGtkWidget; area: PGDKRectangle;
data: gPointer): GBoolean; cdecl;
begin
Result := CallBackDefaultReturn;
//DebugLn(['gtkDrawCB ',GetWidgetDebugReport(Widget),' area=',dbgs(area)]);
{$IFDEF EventTrace}
EventTrace('DrawAfter', data);
{$ENDIF}
end;
function gtkDrawAfterCB(Widget: PGtkWidget; area: PGDKRectangle;
data: gPointer) : GBoolean; cdecl;
function WidgetHasDrawAllBug: boolean;
{$IFDEF Gtk1}
var
WidgetStyle: PGtkStyle;
{$ENDIF}
begin
Result:=false;
{$IFDEF Gtk1}
WidgetStyle := gtk_widget_get_style(Widget);
if (WidgetStyle=nil) then exit;
if (WidgetStyle^.engine=nil) then exit;
Result:=true;
{$ENDIF}
//DebugLn(['WidgetHasDrawAllBug ',dbgs(WidgetStyle^.engine)]);
end;
var
DesignOnlySignal: boolean;
begin
Result := CallBackDefaultReturn;
//DebugLn(['gtkDrawAfterCB ',GetWidgetDebugReport(Widget),' area=',dbgs(area)]);
{$IFDEF EventTrace}
EventTrace('DrawAfter', data);
{$ENDIF}
if not (csDesigning in TComponent(Data).ComponentState) then begin
DesignOnlySignal:=GetDesignOnlySignalFlag(Widget,dstDrawAfter);
if DesignOnlySignal then exit;
end else begin
{$IFDEF VerboseDesignerDraw}
DebugLn('gtkDrawAfterCB',
' Widget=',DbgS(Widget),'=',GetWidgetClassName(Widget),
' ',TComponent(Data).Name,
' ',area^.x,',',area^.y,',',area^.width,',',area^.height,
'');
{$ENDIF}
end;
// some gtk1 theme engines show a bug: they ignore the area and repaint all
// In this case the LCL must repaint all too.
DeliverGtkPaintMessage(Data,Widget,Area,WidgetHasDrawAllBug,true);
end;
{$ENDIF}
function gtkExposeEvent(Widget: PGtkWidget; Event : PGDKEventExpose;
Data: gPointer): GBoolean; cdecl;
var
DesignOnlySignal: boolean;
begin
Result := CallBackDefaultReturn;
{$IFDEF EventTrace}
EventTrace('ExposeAfter', data);
{$ENDIF}
//DebugLn(['gtkExposeEvent ',GetWidgetDebugReport(Widget),' Event^.Count=',Event^.Count]);
if (Event^.Count > 0) then exit;
if not (csDesigning in TComponent(Data).ComponentState) then begin
DesignOnlySignal:=GetDesignOnlySignalFlag(Widget,dstExposeAfter);
if DesignOnlySignal then exit;
end else begin
{$IFDEF VerboseDesignerDraw}
DebugLn('gtkExpose',
' Widget=',DbgS(Widget),'=',GetWidgetClassName(Widget),
' ',TComponent(Data).Name,
' ',dbgs(Event^.area.x),',',dbgs(Event^.area.y),',',dbgs(Event^.area.width),',',dbgs(Event^.area.height),
'');
{$ENDIF}
end;
//DebugLn(['gtkExposeEvent ',GetWidgetDebugReport(Widget),' ',dbgGRect(@Event^.Area)]);
{$IFDEF Gtk1}
// the expose area is ok, but some gtk widgets repaint everything on expose
// -> maximize the area
DeliverGtkPaintMessage(Data, Widget, @Event^.Area, True, False);
{$ELSE}
DeliverGtkPaintMessage(Data, Widget, @Event^.Area, False, False);
{$ENDIF}
end;
function gtkExposeEventAfter(Widget: PGtkWidget; Event : PGDKEventExpose;
Data: gPointer): GBoolean; cdecl;
var
DesignOnlySignal: boolean;
{$IFDEF GTK2}
//children: PGList;
{$ENDIF}
begin
Result := CallBackDefaultReturn;
{$IFDEF EventTrace}
EventTrace('ExposeAfter', data);
{$ENDIF}
//DebugLn(['gtkExposeEventAfter ',GetWidgetDebugReport(Widget),' Event^.Count=',Event^.Count]);
if (Event^.Count > 0) then exit;
if not (csDesigning in TComponent(Data).ComponentState) then begin
DesignOnlySignal:=GetDesignOnlySignalFlag(Widget,dstExposeAfter);
if DesignOnlySignal then exit;
end else begin
{$IFDEF VerboseDesignerDraw}
DebugLn('gtkExposeAfter',
' Widget=',DbgS(Widget),'=',GetWidgetClassName(Widget),
' ',TComponent(Data).Name,
' ',dbgs(Event^.area.x),',',dbgs(Event^.area.y),',',dbgs(Event^.area.width),',',dbgs(Event^.area.height),
'');
{$ENDIF}
end;
//DebugLn(['gtkExposeEventAfter ',GetWidgetDebugReport(Widget),' ',dbgGRect(@Event^.Area)]);
{$IFDEF Gtk1}
// the expose area is ok, but some gtk widgets repaints everything on expose
// -> maximize the area
DeliverGtkPaintMessage(Data,Widget,@Event^.Area,true,true);
{$ELSE}
DeliverGtkPaintMessage(Data,Widget,@Event^.Area,false,true);
// Some widgets in gtk2 don't have their own exclusive "windows" so a synthetic event must be sent
// MG: That is already done by the gtk2. For which widgets does this not work?
// Enabling this results in double painting, which is slower and
// wrong for anitaliased text.
{if GTK_IS_FIXED(Widget) then begin
children := gtk_container_get_children(PGtkContainer(Widget));
while children <> nil do begin
if (children^.data <> nil) then begin
if GTK_WIDGET_NO_WINDOW(PGtkWidget(children^.data)) then
gtk_container_propagate_expose(PGtkContainer(Widget), PGtkWidget(children^.data), Event);
if children^.next = nil then break;
children := children^.next;
end;
end;
g_list_free(children);
end;}
{$ENDIF}
end;
function gtkfrmactivateAfter(widget: PGtkWidget; Event : PgdkEventFocus;
data: gPointer) : GBoolean; cdecl;
var
Mess: TLMActivate;
Info: PWidgetInfo;
{$IFDEF VerboseFocus}
LCLObject: TObject;
CurFocusWidget: PGtkWidget;
{$ENDIF}
begin
{$IFDEF EventTrace}
EventTrace('activate after', data);
{$ENDIF}
if (Widget=nil) or (Event=nil) then ;
ResetDefaultIMContext;
UpdateMouseCaptureControl;
FillChar(Mess,SizeOf(Mess),#0);
{$IFDEF VerboseFocus}
write('gtkfrmactivateAfter Widget=',DbgS(Widget),' Event^.theIn=',Event^.{$ifdef gtk1}thein{$else}_in{$endif});
LCLObject:=TObject(data);
if LCLObject<>nil then begin
if LCLObject is TComponent then begin
write(' LCLObject=',TComponent(LCLObject).Name,':',LCLObject.ClassName)
end else begin
write(' LCLObject=',LCLObject.ClassName)
end;
end else
write(' LCLObject=nil');
DebugLn(''); DbgOut(' ');
CurFocusWidget:=PGtkWidget(GetFocus);
if CurFocusWidget<>nil then begin
write(' GetFocus=',DbgS(CurFocusWidget));
LCLObject:=GetNearestLCLObject(CurFocusWidget);
if LCLObject<>nil then begin
if LCLObject is TComponent then begin
DbgOut(' ParentLCLFocus=',TComponent(LCLObject).Name,':',LCLObject.ClassName)
end else begin
DbgOut(' ParentLCLFocus=',LCLObject.ClassName)
end;
end else
DbgOut(' LCLObject=nil');
end else begin
DbgOut(' GetFocus=nil');
end;
DebugLn('');
{$ENDIF}
Info := GetWidgetInfo(Widget, false);
try
if (Info <> nil) then
Include(Info^.Flags, wwiActivating);
FillChar(Mess, SizeOf(Mess), #0);
Mess.Msg := LM_ACTIVATE;
Mess.Active := WA_ACTIVE;
Mess.Minimized := False;
if GtkWidgetIsA(Widget, gtk_window_get_type) then
Mess.ActiveWindow := HWnd(PtrUInt(PGTKWindow(Widget)^.focus_widget))
else
Mess.ActiveWindow := 0;
Mess.Result := 0;
DeliverMessage(Data, Mess); // send message directly (not Post)
finally
if Info <> nil then
Exclude(Info^.Flags, wwiActivating);
end;
Result := CallBackDefaultReturn;
end;
function gtkfrmdeactivateAfter( widget: PGtkWidget; Event : PgdkEventFocus;
data: gPointer) : GBoolean; cdecl;
var
Mess: TLMActivate;
Info: PWidgetInfo;
{$IFDEF VerboseFocus}
LCLObject: TControl;
{$ENDIF}
begin
{$IFDEF EventTrace}
EventTrace('deactivate after', data);
{$ENDIF}
if (Widget=nil) or (Event=nil) then ;
{$IFDEF VerboseFocus}
write('gtkfrmdeactivate Widget=',DbgS(Widget),' ',Event^.{$ifdef gtk1}thein{$else}_in{$endif},
' GetFocus=',DbgS(Widget));
LCLObject:=TControl(GetLCLObject(Widget));
if LCLObject<>nil then
DebugLn(' LCLObject=',LCLObject.Name,':',LCLObject.ClassName)
else
DebugLn(' LCLObject=nil');
{$ENDIF}
ResetDefaultIMContext;
UpdateMouseCaptureControl;
Info:=GetWidgetInfo(Widget,false);
try
if (Info<>nil) then
Include(Info^.Flags,wwiDeactivating);
FillChar(Mess, SizeOf(Mess), #0);
Mess.Msg := LM_ACTIVATE;
Mess.Active := WA_INACTIVE;
Mess.Minimized := False;
Mess.ActiveWindow := 0;
Mess.Result := 0;
DeliverMessage(Data, Mess);
finally
if Info<>nil then
Exclude(Info^.Flags,wwiDeactivating);
end;
Result := CallBackDefaultReturn;
end;
function GTKMap(Widget: PGTKWidget; Data: gPointer): GBoolean; cdecl;
begin
Result := CallBackDefaultReturn;
if (Widget=nil) then ;
EventTrace('map', data);
end;
function GTKKeyPress(Widget: PGtkWidget; Event: PGdkEventKey; Data: gPointer) : GBoolean; cdecl;
begin
Result := HandleGtkKeyUpDown(Widget,Event,Data,true,True,'key-press-event');
end;
function GTKKeyPressAfter(Widget: PGtkWidget; Event: pgdkeventkey; Data: gPointer): GBoolean; cdecl;
begin
Result := HandleGtkKeyUpDown(Widget,Event,Data,false,True,'key-press-event');
end;
function GTKKeyRelease(Widget: PGtkWidget; Event: PGdkEventKey; Data: gPointer) : GBoolean; cdecl;
begin
Result := HandleGtkKeyUpDown(Widget,Event,Data,true,False,'key-release-event');
end;
function GTKKeyReleaseAfter(Widget: PGtkWidget; Event: pgdkeventkey; Data: gPointer): GBoolean; cdecl;
begin
Result := HandleGtkKeyUpDown(Widget,Event,Data,false,False,'key-release-event');
end;
function GTKFocusCB( widget: PGtkWidget; event:PGdkEventFocus;
data: gPointer) : GBoolean; cdecl;
{$IFDEF VerboseFocus}
var
LCLObject: TObject;
CurFocusWidget: PGtkWidget;
{$ENDIF}
begin
{$IFDEF EventTrace}
EventTrace('focus', data);
{$ENDIF}
if (Widget=nil) or (Event=nil) then ;
//DebugLn('GTKFocusCB ',DbgSName(TObject(Data)),' ',GetWidgetDebugReport(Widget));
{$IFDEF VerboseFocus}
write('GTKFocusCB Widget=',DbgS(Widget),' Event^.theIn=',Event^.{$ifdef gtk1}thein{$else}_in{$endif});
LCLObject:=TObject(data);
if LCLObject<>nil then begin
if LCLObject is TComponent then begin
write(' LCLObject=',TComponent(LCLObject).Name,':',LCLObject.ClassName)
end else begin
write(' LCLObject=',LCLObject.ClassName)
end;
end else
write(' LCLObject=nil');
DebugLn(''); DbgOut(' ');
CurFocusWidget:=PGtkWidget(GetFocus);
if CurFocusWidget<>nil then begin
write(' GetFocus=',DbgS(CurFocusWidget));
LCLObject:=GetNearestLCLObject(CurFocusWidget);
if LCLObject<>nil then begin
if LCLObject is TComponent then begin
write(' ParentLCLFocus=',TComponent(LCLObject).Name,':',LCLObject.ClassName)
end else begin
write(' ParentLCLFocus=',LCLObject.ClassName)
end;
end else
write(' LCLObject=nil');
end else begin
write(' GetFocus=nil');
end;
DebugLn('');
{$ENDIF}
Result:=CallBackDefaultReturn;
end;
function GTKFocusCBAfter(widget: PGtkWidget; event:PGdkEventFocus;
data: gPointer) : GBoolean; cdecl;
var
Mess : TLMessage;
{$IFDEF VerboseFocus}
LCLObject: TObject;
CurFocusWidget: PGtkWidget;
{$ENDIF}
begin
{$IFDEF EventTrace}
EventTrace('focus', data);
{$ENDIF}
if (Widget=nil) or (Event=nil) then ;
//DebugLn('GTKFocusCBAfter ',DbgSName(TObject(Data)),' ',GetWidgetDebugReport(Widget));
{$IFDEF VerboseFocus}
write('GTKFocusCBAfter Widget=',DbgS(Widget),' Event^.theIn=',Event^.{$ifdef gtk1}thein{$else}_in{$endif});
LCLObject:=TObject(data);
if LCLObject<>nil then begin
if LCLObject is TComponent then begin
write(' LCLObject=',TComponent(LCLObject).Name,':',LCLObject.ClassName)
end else begin
write(' LCLObject=',LCLObject.ClassName)
end;
end else
write(' LCLObject=nil');
DebugLn(''); DbgOut(' ');
CurFocusWidget:=PGtkWidget(GetFocus);
if CurFocusWidget<>nil then begin
write(' GetFocus=',DbgS(CurFocusWidget));
LCLObject:=GetNearestLCLObject(CurFocusWidget);
if LCLObject<>nil then begin
if LCLObject is TComponent then begin
write(' ParentLCLFocus=',TComponent(LCLObject).Name,':',LCLObject.ClassName)
end else begin
write(' ParentLCLFocus=',LCLObject.ClassName)
end;
end else
write(' LCLObject=nil');
end else begin
write(' GetFocus=nil');
end;
DebugLn('');
{$ENDIF}
ResetDefaultIMContext;
UpdateMouseCaptureControl;
//TODO: fill in old focus
FillChar(Mess,SizeOf(Mess),0);
Mess.msg := LM_SETFOCUS;
DeliverMessage(Data, Mess);
Result:=true;
end;
function GTKKillFocusCB(widget: PGtkWidget; event:PGdkEventFocus;
data: gPointer) : GBoolean; cdecl;
{$IFDEF VerboseFocus}
var
LCLObject: TObject;
CurFocusWidget: PGtkWidget;
{$ENDIF}
begin
{$IFDEF EventTrace}
EventTrace('killfocusCB', data);
{$ENDIF}
if (Widget=nil) or (Event=nil) then ;
//DebugLn('GTKKillFocusCB ',DbgSName(TObject(Data)),' ',GetWidgetDebugReport(Widget));
{$IFDEF VerboseFocus}
write('GTKillFocusCB Widget=',DbgS(Widget),' Event^.theIn=',Event^.{$ifdef gtk1}thein{$else}_in{$endif});
LCLObject:=TObject(data);
if LCLObject<>nil then begin
if LCLObject is TComponent then begin
write(' LCLObject=',TComponent(LCLObject).Name,':',LCLObject.ClassName)
end else begin
write(' LCLObject=',LCLObject.ClassName)
end;
end else
write(' LCLObject=nil');
DebugLn(''); DbgOut(' ');
CurFocusWidget:=PGtkWidget(GetFocus);
if CurFocusWidget<>nil then begin
write(' GetFocus=',DbgS(CurFocusWidget));
LCLObject:=GetNearestLCLObject(CurFocusWidget);
if LCLObject<>nil then begin
if LCLObject is TComponent then begin
write(' ParentLCLFocus=',TComponent(LCLObject).Name,':',LCLObject.ClassName)
end else begin
write(' ParentLCLFocus=',LCLObject.ClassName)
end;
end else
write(' LCLObject=nil');
end else begin
write(' GetFocus=nil');
end;
DebugLn('');
{$ENDIF}
// do not release capture widget here, as this will interfere
//ReleaseCaptureWidget(Widget);
Result:=CallBackDefaultReturn;
end;
function GTKKillFocusCBAfter(widget: PGtkWidget; event:PGdkEventFocus;
data: gPointer) : GBoolean; cdecl;
var
Mess : TLMessage;
{$IFDEF VerboseFocus}
LCLObject: TObject;
CurFocusWidget: PGtkWidget;
{$ENDIF}
begin
if (Widget=nil) or (Event=nil) then ;
{$IFDEF EventTrace}
EventTrace('killfocusCBAfter', data);
{$ENDIF}
//DebugLn('GTKKillFocusCBAfter ',DbgSName(TObject(Data)),' ',GetWidgetDebugReport(Widget));
{$IFDEF VerboseFocus}
write('GTKillFocusCBAfter Widget=',DbgS(Widget),' Event^.theIn=',Event^.{$ifdef gtk1}thein{$else}_in{$endif});
LCLObject:=TObject(data);
if LCLObject<>nil then begin
if LCLObject is TComponent then begin
write(' LCLObject=',TComponent(LCLObject).Name,':',LCLObject.ClassName)
end else begin
write(' LCLObject=',LCLObject.ClassName)
end;
end else
write(' LCLObject=nil');
DebugLn(''); DbgOut(' ');
CurFocusWidget:=PGtkWidget(GetFocus);
if CurFocusWidget<>nil then begin
write(' GetFocus=',DbgS(CurFocusWidget));
LCLObject:=GetNearestLCLObject(CurFocusWidget);
if LCLObject<>nil then begin
if LCLObject is TComponent then begin
write(' ParentLCLFocus=',TComponent(LCLObject).Name,':',LCLObject.ClassName)
end else begin
write(' ParentLCLFocus=',LCLObject.ClassName)
end;
end else
write(' LCLObject=nil');
end else begin
write(' GetFocus=nil');
end;
DebugLn('');
{$ENDIF}
ResetDefaultIMContext;
UpdateMouseCaptureControl;
FillChar(Mess,SizeOf(Mess),0);
Mess.msg := LM_KILLFOCUS;
// do not release the capture widget here
//TODO: fill in new focus
//DebugLn(Format('Trace:TODO: [gtkkillfocusCB] %s finish', [TObject(Data).ClassName]));
DeliverMessage(Data, Mess);
Result:=true;
end;
function gtkdestroyCB(widget: PGtkWidget; data: gPointer) : GBoolean; cdecl;
var
Mess: TLMessage;
Info: PWidgetInfo;
begin
Result := CallBackDefaultReturn;
//DebugLn(['gtkdestroyCB ',GetWidgetDebugReport(Widget)]);
Info:=GetWidgetInfo(Widget,false);
if Info = nil then // this widget is already destroyed
Exit;
if (Data = nil) or (Info^.LCLObject <> TObject(Data)) then // this LCLObject does not use this widget anymore
Exit;
if (TObject(Data) is TWinControl) then
begin
if (not TWinControl(Data).HandleAllocated) then
begin
FreeWidgetInfo(Widget);
Exit;
end else
if (PGtkWidget(TWinControl(Data).Handle) <> Widget) then // the TWinControl does not use this widget anymore.
Exit;
end;
{$IFDEF EventTrace}
EventTrace('destroyCB', data);
{$ENDIF}
//DebugLn('gtkdestroyCB Data="',DbgSName(TObject(Data)),'" LCLObject="',DbgSName(Info^.LCLObject),'" ',GetWidgetDebugReport(Widget));
FillChar(Mess, SizeOf(Mess), 0);
Mess.msg := LM_DESTROY;
DeliverMessage(Data, Mess);
// NOTE: if the destroy message is posted
// we should post an info destroy message as well
FreeWidgetInfo(Widget);
end;
procedure DestroyWindowFromPointCB(Widget: PGtkWidget; data: gPointer); cdecl;
begin
if PGtkWidget(LastWFPResult) <> Widget then Exit;
LastWFPResult := 0;
LastWFPMousePos := Point(High(Integer), High(Integer));
end;
function gtkdeleteCB( widget : PGtkWidget; event : PGdkEvent;
data : gPointer) : GBoolean; cdecl;
var Mess : TLMessage;
begin
FillChar(Mess,SizeOf(Mess),0);
if (Widget=nil) or (Event=nil) then ;
Mess.Msg:= LM_CLOSEQUERY;
{ Message results : True - do nothing, False - destroy or hide window }
Result:= DeliverMessage(Data, Mess) = 0;
end;
function gtkresizeCB( widget: PGtkWidget; data: gPointer) : GBoolean; cdecl;
//var
// Mess : TLMessage;
begin
Result := CallBackDefaultReturn;
if (Widget=nil) then ;
{$IFDEF EventTrace}
EventTrace('resize', data);
{$ENDIF}
// Mess.msg := LM_RESIZE;
// TControl(data).WindowProc(TLMessage(Mess));
//DebugLn('Trace:TODO: [gtkresizeCB] fix (or remove) to new LM_SIZE');
//TObject(data).Dispatch(Mess);
end;
function gtkMonthChanged(Widget: PGtkWidget; data: gPointer) : GBoolean; cdecl;
var
Mess: TLMessage;
begin
Result := CallBackDefaultReturn;
if (Widget=nil) then ;
{$IFDEF EventTrace}
EventTrace('month changed', data);
{$ENDIF}
FillChar(Mess,SizeOf(Mess),0);
Mess.Msg := LM_MONTHCHANGED;
DeliverPostMessage(Data, Mess);
Result := CallBackDefaultReturn;
end;
{-------------------------------------------------------------------------------
procedure DeliverMouseMoveMessage(Widget:PGTKWidget; Event: PGDKEventMotion;
AWinControl: TWinControl);
Translate a gdk mouse motion event into a LCL mouse move message and send it.
Mouse coordinate mapping:
Why mapping:
An lcl control can consists of several gtk widgets, and any message to them is
send to the lcl control. The gtk sends the coordinates relative to the
emitting gdkwindow (not relative to the gtkwidget). And the area of a lcl
control can belong to several gdkwindows. Therefore the mouse coordinates must
be mapped.
What the lcl expects:
For Delphi compatibility the mouse coordinates must be relative to the client
area of the control.
That means for example if the mouse is over the top-left pixel of the client
widget (mostly a gtkfixed widget), then 0,0 is send.
If the mouse is on the top-left pixel of the container widget then the
coordinates can be negative, if there is frame around the client area.
-------------------------------------------------------------------------------}
procedure DeliverMouseMoveMessage(Widget: PGTKWidget; Event: PGDKEventMotion;
AWinControl: TWinControl);
var
Msg: TLMMouseMove;
ShiftState: TShiftState;
MappedXY: TPoint;
begin
MappedXY := TranslateGdkPointToClientArea(Event^.Window,
Point(TruncToInt(Event^.X), TruncToInt(Event^.Y)),
PGtkWidget(AWinControl.Handle));
{$ifndef gtk1}
MappedXY := SubtractScoll(PGtkWidget(AWinControl.Handle), MappedXY);
{$endif}
ShiftState := GTKEventStateToShiftState(Event^.State);
with Msg do
begin
Msg := LM_MouseMove;
XPos := MappedXY.X;
YPos := MappedXY.Y;
Keys := ShiftStateToKeys(ShiftState);
Result := 0;
end;
// send the message directly to the LCL
// (Posting the message via queue
// has the risk of getting out of sync with the gtk)
NotifyApplicationUserInput(AWinControl, Msg.Msg);
//DebugLn(['DeliverMouseMoveMessage ',dbgsName(AWinControl)]);
DeliverMessage(AWinControl, Msg);
end;
{-------------------------------------------------------------------------------
function ControlGetsMouseMoveBefore(AControl: TControl): boolean;
Returns true, if mouse move event should be sent before the widget istelf
reacts.
-------------------------------------------------------------------------------}
function ControlGetsMouseMoveBefore(AControl: TControl): boolean;
begin
if (AControl=nil) then ;
// currently there are no controls, that need after events.
Result:=true;
end;
{-------------------------------------------------------------------------------
GTKMotionNotify
Params: widget: PGTKWidget; event: PGDKEventMotion; data: gPointer
Returns: GBoolean
Called whenever the mouse is moved over a widget.
The gtk event is translated into a lcl MouseMove message.
-------------------------------------------------------------------------------}
function gtkMotionNotify(Widget:PGTKWidget; Event: PGDKEventMotion;
Data: gPointer): GBoolean; cdecl;
var
DesignOnlySignal: boolean;
ShiftState: TShiftState;
begin
Result := CallBackDefaultReturn;
MousePositionValid:=false;
{$IFDEF VerboseMouseBugfix}
DesignOnlySignal:=GetDesignOnlySignalFlag(Widget,dstMouseMotion);
DebugLn('[GTKMotionNotify] ',
DbgSName(TControl(Data)),
' Widget=',DbgS(Widget),
' DSO=',dbgs(DesignOnlySignal),
' Event^.X=',dbgs(TruncToInt(Event^.X)),' Event^.Y=',dbgs(TruncToInt(Event^.Y))
);
{$ENDIF}
UpdateMouseCaptureControl;
ShiftState := GTKEventStateToShiftState(Event^.State);
if (MouseCaptureWidget=Widget)
and (MouseCaptureType=mctGTK)
and ([ssLeft,ssRight,ssMiddle]*ShiftState=[]) then begin
{$IFDEF VerboseMouseCapture}
DebugLn(['gtkMotionNotify gtk capture without mouse down: ',GetWidgetDebugReport(Widget)]);
{$ENDIF}
{$IFDEF Gtk1}
// workaround for buggy gtk1: release capture and clean up editable
// (happens when popupmenu of TEdit/TComboBox closes)
gtk_grab_remove(MouseCaptureWidget);
if GtkWidgetIsA(MouseCaptureWidget,GTK_TYPE_ENTRY) then begin
PGtkEntry(MouseCaptureWidget)^.button:=0;
end;
if GtkWidgetIsA(MouseCaptureWidget,gtk_editable_get_type) then begin
PGtkEditable(MouseCaptureWidget)^.flag0:=
PGtkEditable(MouseCaptureWidget)^.flag0 and not bm_TGtkEditable_has_selection;
end;
UpdateMouseCaptureControl;
{$ENDIF}
end;
if not (csDesigning in TComponent(Data).ComponentState) then
begin
DesignOnlySignal := GetDesignOnlySignalFlag(Widget, dstMouseMotion);
if DesignOnlySignal then exit;
if not ControlGetsMouseMoveBefore(TControl(Data)) then exit;
end else
begin
// stop the signal, so that the widget does not auto react
g_signal_stop_emission_by_name(PGTKObject(Widget), 'motion-notify-event');
Result := CallBackDefaultReturn; // why not True if we want to stop it?
end;
DeliverMouseMoveMessage(Widget,Event,TWinControl(Data));
{$IFDEF gtk2}
if TControl(Data).FCompStyle = csWinControl then
Result := True; // stop signal
{$ENDIF}
end;
{-------------------------------------------------------------------------------
GTKMotionNotifyAfter
Params: widget: PGTKWidget; event: PGDKEventMotion; data: gPointer
Returns: GBoolean
Called whenever the mouse is moved over a widget as last handler.
-------------------------------------------------------------------------------}
function GTKMotionNotifyAfter(widget:PGTKWidget; event: PGDKEventMotion;
data: gPointer): GBoolean; cdecl;
begin
Result := true; // stop event propagation
MousePositionValid := False;
{$IFDEF VerboseMouseBugfix}
DebugLn('[GTKMotionNotifyAfter] ',
DbgSName(TControl(Data)));
{$ENDIF}
// stop the signal, so that it is not sent to the parent widgets
g_signal_stop_emission_by_name(PGTKObject(Widget),'motion-notify-event');
UpdateMouseCaptureControl;
if (csDesigning in TComponent(Data).ComponentState) then exit;
if ControlGetsMouseMoveBefore(TControl(Data)) then exit;
DeliverMouseMoveMessage(Widget,Event, TWinControl(Data));
end;
{-------------------------------------------------------------------------------
function ControlGetsMouseDownBefore(AControl: TControl): boolean;
Returns true, if mouse down event should be sent before the widget istelf
reacts.
-------------------------------------------------------------------------------}
function ControlGetsMouseDownBefore(AControl: TControl;
AWidget: PGtkWidget): boolean;
begin
Result:=true;
if AControl=nil then exit;
if GtkWidgetIsA(AWidget,gtk_toggle_button_get_type) then begin
{$IFDEF Gtk1}
Result:=false;
{$ENDIF}
end;
end;
{-------------------------------------------------------------------------------
procedure DeliverMouseDownMessage(widget: PGtkWidget; event : pgdkEventButton;
AWinControl: TWinControl);
Translate a gdk mouse press event into a LCL mouse down message and send it.
-------------------------------------------------------------------------------}
procedure DeliverMouseDownMessage(widget: PGtkWidget; event : pgdkEventButton;
AWinControl: TWinControl);
const
WHEEL_DELTA : array[Boolean] of Integer = (-120, 120);
var
MessI : TLMMouse;
MessE : TLMMouseEvent;
ShiftState: TShiftState;
MappedXY: TPoint;
EventXY: TPoint;
{off $DEFINE VerboseMouseBugfix}
function CheckMouseButtonDown(var LastMouse: TLastMouseClick;
BtnKey, MsgNormal, MsgDouble, MsgTriple, MsgQuad: longint): boolean;
function LastClickInSameGdkWindow: boolean;
begin
Result:=(LastMouse.Window<>nil) and (LastMouse.Window=Event^.Window);
end;
function LastClickAtSamePosition: boolean;
begin
Result:= (Abs(EventXY.X-LastMouse.WindowPoint.X)<=DblClickThreshold)
and (Abs(EventXY.Y-LastMouse.WindowPoint.Y)<=DblClickThreshold);
end;
function LastClickInTime: boolean;
begin
Result := ((now - LastMouse.TheTime) <= ((1/86400)*(DblClickTime/1000)));
end;
function TestIfMultiClick: boolean;
begin
Result:=LastClickInSameGdkWindow
and LastClickAtSamePosition
and LastClickInTime;
end;
var
IsMultiClick: boolean;
begin
Result := False;
if (LastMouse.Down) and
(not (gdk_event_get_type(Event) in [gdk_2button_press, gdk_3button_press]))
then begin
{$IFDEF VerboseMouseBugfix}
DebugLn(' NO CLICK: LastMouse.Down=',dbgs(LastMouse.Down),
' Event^.theType=',dbgs(gdk_event_get_type(Event)));
{$ENDIF}
Exit;
end;
MessI.Keys := MessI.Keys or BtnKey;
IsMultiClick := TestIfMultiClick;
case gdk_event_get_type(Event) of
gdk_2button_press:
// the gtk itself has detected a double click
if (LastMouse.ClickCount>=2)
and IsMultiClick
then begin
// the double click was already detected and sent to the LCL
// -> skip this message
exit;
end else begin
LastMouse.ClickCount:=2;
end;
gdk_3button_press:
// the gtk itself has detected a triple click
if (LastMouse.ClickCount>=3)
and IsMultiClick
then begin
// the triple click was already detected and sent to the LCL
// -> skip this message
exit;
end else begin
LastMouse.ClickCount:=3;
end;
else
begin
inc(LastMouse.ClickCount);
if (LastMouse.ClickCount<=4)
and IsMultiClick
then begin
// multi click
{$IFDEF VerboseMouseBugfix}
DebugLn(' MULTI CLICK: ',dbgs(now),'-',dbgs(LastMouse.TheTime),'<= ',
dbgs((1/86400)*(DblClickTime/1000)));
{$ENDIF}
end else begin
// normal click
LastMouse.ClickCount:=1;
end;
end;
end;
{$IFDEF VerboseMouseBugfix}
DebugLn(' ClickCount=',dbgs(LastMouse.ClickCount));
{$ENDIF}
LastMouse.TheTime := Now;
LastMouse.Window := Event^.Window;
LastMouse.WindowPoint := EventXY;
LastMouse.Down := True;
LastMouse.Component := AWinControl;
//DebugLn('DeliverMouseDownMessage ',DbgSName(AWinControl),' Mapped=',dbgs(MappedXY.X),',',dbgs(MappedXY.Y),' Event=',dbgs(EventXY.X),',',dbgs(EventXY.Y),' ',dbgs(LastMouse.ClickCount));
case LastMouse.ClickCount of
1: MessI.Msg := MsgNormal;
2: MessI.Msg := MsgDouble;
3: MessI.Msg := MsgTriple;
4: MessI.Msg := MsgQuad;
else
MessI.Msg := LM_NULL;
end;
Result := True;
end;
begin
MousePositionValid := False;
EventXY := Point(TruncToInt(Event^.X), TruncToInt(Event^.Y));
ShiftState := GTKEventStateToShiftState(Event^.State);
MappedXY := TranslateGdkPointToClientArea(Event^.Window, EventXY,
PGtkWidget(AWinControl.Handle));
{$ifndef gtk1}
MappedXY := SubtractScoll(PGtkWidget(AWinControl.Handle), MappedXY);
{$endif}
//DebugLn('DeliverMouseDownMessage ',DbgSName(AWinControl),' Mapped=',dbgs(MappedXY.X),',',dbgs(MappedXY.Y),' Event=',dbgs(EventXY.X),',',dbgs(EventXY.Y));
if event^.Button in [4, 5] then
begin
// this is a mouse wheel event
MessE.Msg := LM_MOUSEWHEEL;
MessE.WheelDelta := WHEEL_DELTA[event^.Button = 4];
MessE.X := MappedXY.X;
MessE.Y := MappedXY.Y;
MessE.State := ShiftState;
MessE.UserData := AWinControl;
MessE.Button := 0;
// send the message directly to the LCL
NotifyApplicationUserInput(AWinControl, MessE.Msg);
DeliverMessage(AWinControl, MessE);
end
else
begin
// a normal mouse button is pressed
MessI.Keys := 0;
case event^.Button of
1: if not CheckMouseButtonDown(LastLeft,
MK_LBUTTON, LM_LBUTTONDOWN,
LM_LBUTTONDBLCLK, LM_LBUTTONTRIPLECLK, LM_LBUTTONQUADCLK) then Exit;
2: if not CheckMouseButtonDown(LastMiddle,
MK_MBUTTON, LM_MBUTTONDOWN,
LM_MBUTTONDBLCLK, LM_MBUTTONTRIPLECLK, LM_MBUTTONQUADCLK) then Exit;
3: if not CheckMouseButtonDown(LastRight,
MK_RBUTTON, LM_RBUTTONDOWN,
LM_RBUTTONDBLCLK, LM_RBUTTONTRIPLECLK, LM_RBUTTONQUADCLK) then Exit;
else
begin
MessI.Msg := LM_NULL;
exit;
end;
end; // case
MessI.XPos := MappedXY.X;
MessI.YPos := MappedXY.Y;
MessI.Keys := MessI.Keys or ShiftStateToKeys(ShiftState);
MessI.Result:=0;
// send the message directly to the LCL
NotifyApplicationUserInput(AWinControl, MessI.Msg);
DeliverMessage(AWinControl, MessI);
end;
end;
{-------------------------------------------------------------------------------
gtkMouseBtnPress
Params: widget: PGTKWidget; event: PGDKEventMotion; data: gPointer
Returns: GBoolean
Called whenever the mouse is over a widget and a mouse button is pressed.
-------------------------------------------------------------------------------}
function gtkMouseBtnPress(widget: PGtkWidget; event: pgdkEventButton;
data: gPointer) : GBoolean; cdecl;
procedure CheckListSelection;
var
List: PGlist;
ListWidget: PGtkList;
R: TRect;
Info: PWinWidgetInfo;
begin
// When in browse mode and a listbox is focused and nothing is selected,
// the first item is focused.
// Clicking with the mouse on this item won't select it.
Info := GetWidgetInfo(Widget, false);
if Info = nil then Exit;
if Info^.CoreWidget = nil then Exit;
if not GtkWidgetIsA(Info^.CoreWidget, gtk_list_get_type) then Exit;
ListWidget := PGtkList(Info^.CoreWidget);
// Check mode
if selection_mode(ListWidget^) <> GTK_SELECTION_BROWSE then Exit;
// Check selection
List := ListWidget^.selection;
if (List <> nil) and (List^.data <> nil) then Exit;
// Check if there are children
List := ListWidget^.children;
if List = nil then Exit;
if List^.Data = nil then Exit;
// we need only to check the first
with PGtkWidget(List^.Data)^.allocation do
R := Bounds(X, Y, Width, Height);
if not PtInRect(R, Point(Trunc(event^.X), Trunc(event^.Y))) then Exit;
// Select it
gtk_list_item_select(PGtkListItem(List^.Data));
end;
var
DesignOnlySignal: boolean;
AWinControl: TWinControl;
{$IFDEF GTK1}
CaptureWidget: PGtkWidget;
EventXY: TPoint;
MappedXY: TPoint;
{$ENDIF}
begin
Result := CallBackDefaultReturn;
MousePositionValid := False;
AWinControl:=TWinControl(Data);
{$IFDEF VerboseMouseBugfix}
DebugLn('');
DesignOnlySignal:=GetDesignOnlySignalFlag(Widget,dstMousePress);
DebugLn('[gtkMouseBtnPress] ',
DbgSName(AWinControl),
' Widget=',DbgS(Widget),
' ControlWidget=',DbgS(AWinControl.Handle),
' DSO='+dbgs(DesignOnlySignal),
' '+dbgs(TruncToInt(Event^.X)),',',dbgs(TruncToInt(Event^.Y)),
' Type='+dbgs(gdk_event_get_type(Event)));
{$ENDIF}
{$IFDEF EventTrace}
EventTrace('Mouse button Press', data);
{$ENDIF}
ResetDefaultIMContext;
UpdateMouseCaptureControl;
if not (csDesigning in TComponent(Data).ComponentState) then
begin
// fix gtklist selection first
CheckListSelection;
DesignOnlySignal := GetDesignOnlySignalFlag(Widget, dstMousePress);
if DesignOnlySignal then exit;
if not ControlGetsMouseDownBefore(TControl(Data), Widget) then Exit;
if Event^.button = 1 then
begin
{$IFDEF Gtk1}
// gtk2: the LCL will capture itself if DragMode=dmAutomatic
CaptureWidget := PGtkWidget(AWinControl.Handle);
EventXY := Point(TruncToInt(Event^.X), TruncToInt(Event^.Y));
MappedXY := TranslateGdkPointToClientArea(Event^.Window, EventXY, CaptureWidget);
SetCaptureControl(AWinControl, MappedXY);
{$ENDIF}
//CaptureMouseForWidget(CaptureWidget,mctGTKIntf);
end
else
// how to skip default right click handling? LCL can tell only on mouse up
// if handling can be skiped but gtk needs on mouse down
if (Event^.button = 3) and
((AWinControl.PopupMenu <> nil) or
(TWinControlAccess(Data).OnContextPopup <> nil)) then begin
{$IFDEF GTK1}
if (TControl(Data) is TCustomTabControl) then
g_signal_stop_emission_by_name(PGTKObject(Widget), 'button-press-event');
{$ENDIF}
Result := True;
end;
end else begin
if (event^.Button=1) and (TControl(Data) is TCustomTabControl) then
begin
// clicks on the notebook should be handled by the gtk (switching page)
end
else
begin
// stop the signal, so that the widget does not auto react
//DebugLn(['gtkMouseBtnPress stop signal']);
g_signal_stop_emission_by_name(PGTKObject(Widget), 'button-press-event');
end;
end;
//debugln('[gtkMouseBtnPress] calling DeliverMouseDownMessage Result=',dbgs(Result));
DeliverMouseDownMessage(Widget, Event, TWinControl(Data));
end;
{-------------------------------------------------------------------------------
gtkMouseBtnPressAfter
Params: widget: PGTKWidget; event: PGDKEventMotion; data: gPointer
Returns: GBoolean
Called whenever the mouse is over a widget and a mouse button is pressed.
This is the last handler.
-------------------------------------------------------------------------------}
function gtkMouseBtnPressAfter(widget: PGtkWidget; event : pgdkEventButton;
data: gPointer) : GBoolean; cdecl;
begin
Result := True;
MousePositionValid := False;
{$IFDEF VerboseMouseBugfix}
debugln('[gtkMouseBtnPressAfter] ',
DbgSName(TObject(Data)),
' Widget=',DbgS(Widget), ' ', GetWidgetClassName(Widget),
' ',dbgs(TruncToInt(Event^.X)),',',dbgs(TruncToInt(Event^.Y)));
{$ENDIF}
ResetDefaultIMContext;
UpdateMouseCaptureControl;
// stop the signal, so that it is not sent to the parent widgets
g_signal_stop_emission_by_name(PGTKObject(Widget), 'button-press-event');
if (csDesigning in TComponent(Data).ComponentState) then exit;
if ControlGetsMouseDownBefore(TControl(Data),Widget) then exit;
//debugln('[gtkMouseBtnPressAfter] calling DeliverMouseDownMessage');
DeliverMouseDownMessage(Widget, Event, TWinControl(Data));
end;
{-------------------------------------------------------------------------------
function ControlGetsMouseUpBefore(AControl: TControl): boolean;
Returns true, if mouse up event should be sent before the widget istelf
reacts.
-------------------------------------------------------------------------------}
function ControlGetsMouseUpBefore(AControl: TControl): boolean;
begin
Result:=true;
if AControl=nil then ;
{$IFDEF Gtk1}
case AControl.fCompStyle of
csCheckBox,
csRadioButton,
csToggleBox:
Result:=false;
end;
{$ENDIF}
end;
{-------------------------------------------------------------------------------
procedure DeliverMouseUpMessage(widget: PGtkWidget; event : pgdkEventButton;
AWinControl: TWinControl);
Translate a gdk mouse release event into a LCL mouse up message and send it.
returns true, if message was handled by LCL
-------------------------------------------------------------------------------}
function DeliverMouseUpMessage(widget: PGtkWidget; event: pgdkEventButton;
AWinControl: TWinControl): boolean;
var
MessI : TLMMouse;
ShiftState: TShiftState;
MappedXY: TPoint;
function CheckMouseButtonUp(var LastMouse: TLastMouseClick;
MsgUp: longint): boolean;
begin
MessI.Msg := MsgUp;
LastMouse.Down := False;
Result := True;
end;
begin
Result := False;
MappedXY := TranslateGdkPointToClientArea(Event^.Window,
Point(TruncToInt(Event^.X), TruncToInt(Event^.Y)),
PGtkWidget(AWinControl.Handle));
{$ifndef gtk1}
MappedXY := SubtractScoll(PGtkWidget(AWinControl.Handle), MappedXY);
{$endif}
//DebugLn(['DeliverMouseUpMessage ',GetWidgetDebugReport(Widget),' ',dbgsName(AWinControl),' ',dbgs(MappedXY)]);
case event^.Button of
1: if not CheckMouseButtonUp(LastLeft, LM_LBUTTONUP) then Exit;
2: if not CheckMouseButtonUp(LastMiddle, LM_MBUTTONUP) then Exit;
3: if not CheckMouseButtonUp(LastRight, LM_RBUTTONUP) then exit;
else
begin
MessI.Msg := LM_NULL;
Exit;
end;
end; // case
MessI.XPos := MappedXY.X;
MessI.YPos := MappedXY.Y;
ShiftState := GTKEventStateToShiftState(Event^.State);
MessI.Keys := ShiftStateToKeys(ShiftState);
if MessI.Msg <> LM_NULL then
begin
// send the message directly to the LCL
// (Posting the message via queue
// has the risk of getting out of sync with the gtk)
MessI.Result := 0;
NotifyApplicationUserInput(AWinControl, MessI.Msg);
DeliverMessage(AWinControl, MessI);
if MessI.Result <> 0 then
begin
// handled by the LCL
//DebugLn(['DeliverMouseUpMessage msg was handled by the LCL, Stopping signal ...']);
g_signal_stop_emission_by_name(PGTKObject(Widget), 'button-release-event');
Result := True;
end;
end;
end;
{-------------------------------------------------------------------------------
gtkMouseBtnRelease
Params: widget: PGTKWidget; event: PGDKEventMotion; data: gPointer
Returns: GBoolean
Called whenever the mouse is over a widget and a mouse button is released.
-------------------------------------------------------------------------------}
function gtkMouseBtnRelease(widget: PGtkWidget; event : pgdkEventButton;
data: gPointer) : GBoolean; cdecl;
var
DesignOnlySignal: boolean;
begin
Result := CallBackDefaultReturn;
MousePositionValid := False;
{$IFDEF VerboseMouseBugfix}
DesignOnlySignal:=GetDesignOnlySignalFlag(Widget,dstMouseRelease);
DebugLn(['[gtkMouseBtnRelease] A ',DbgSName(TObject(Data)),' ',
' Widget=',DbgS(Widget),
' Event.time=',event^.time,
' DSO=',DesignOnlySignal,
' ',TruncToInt(Event^.X),',',TruncToInt(Event^.Y),' Btn=',event^.Button]);
{$ENDIF}
//DebugLn('EEE1 MouseRelease Widget=',DbgS(Widget),
//' EventMask=',DbgS(gdk_window_get_events(Widget^.Window)),
//' GDK_BUTTON_RELEASE_MASK=',DbgS(GDK_BUTTON_RELEASE_MASK));
ResetDefaultIMContext;
UpdateMouseCaptureControl;
if not (csDesigning in TComponent(Data).ComponentState) then
begin
DesignOnlySignal := GetDesignOnlySignalFlag(Widget, dstMouseRelease);
ReleaseMouseCapture;
if DesignOnlySignal or (not ControlGetsMouseUpBefore(TControl(Data))) then
Exit;
end else
begin
// stop the signal, so that the widget does not auto react
if not (TControl(Data) is TCustomTabControl) then
begin
g_signal_stop_emission_by_name(PGTKObject(Widget), 'button-release-event');
Result := not CallBackDefaultReturn;
end;
end;
if DeliverMouseUpMessage(Widget, Event, TWinControl(Data)) then
Result := not CallBackDefaultReturn;
end;
{-------------------------------------------------------------------------------
gtkMouseBtnReleaseAfter
Params: widget: PGTKWidget; event: PGDKEventMotion; data: gPointer
Returns: GBoolean
Called whenever the mouse is over a widget and a mouse button is released.
This is the last handler.
-------------------------------------------------------------------------------}
function gtkMouseBtnReleaseAfter(widget: PGtkWidget; event : pgdkEventButton;
data: gPointer) : GBoolean; cdecl;
begin
Result := True;
MousePositionValid := False;
{$IFDEF VerboseMouseBugfix}
DebugLn('[gtkMouseBtnReleaseAfter] ',DbgSName(TObject(Data)),' ',
' Widget=',DbgS(Widget),
' ',dbgs(TruncToInt(Event^.X)),',',dbgs(TruncToInt(Event^.Y)),' Btn=',dbgs(event^.Button));
{$ENDIF}
// stop the signal, so that it is not sent to the parent widgets
g_signal_stop_emission_by_name(PGTKObject(Widget),'button-release-event');
ResetDefaultIMContext;
UpdateMouseCaptureControl;
if (csDesigning in TComponent(Data).ComponentState) then exit;
if ControlGetsMouseUpBefore(TControl(Data)) then exit;
DeliverMouseUpMessage(Widget,Event,TWinControl(Data));
end;
function gtkclickedCB(widget: PGtkWidget; data: gPointer) : GBoolean; cdecl;
var
Mess: TLMessage;
begin
Result := CallBackDefaultReturn;
//DebugLn('[gtkclickedCB] ',TObject(Data).ClassName);
EventTrace('clicked', data);
if (LockOnChange(PgtkObject(Widget),0)>0) then exit;
Mess.Msg := LM_CLICKED;
DeliverMessage(Data, Mess);
end;
function gtkEnterCB(widget: PGtkWidget; data: gPointer) : GBoolean; cdecl;
var
Mess : TLMessage;
begin
Result := CallBackDefaultReturn;
{$IFDEF EventTrace}
EventTrace('enter', data);
{$ENDIF}
if csDesigning in TControl(Data).ComponentState then begin
// stop the signal, so that the widget does not auto react
g_signal_stop_emission_by_name(PGTKObject(Widget),'enter');
end;
Mess.msg := LM_MOUSEENTER;
DeliverMessage(Data, Mess);
end;
function gtkLeaveCB(widget: PGtkWidget; data: gPointer) : GBoolean; cdecl;
var
Mess : TLMessage;
begin
Result := CallBackDefaultReturn;
{$IFDEF EventTrace}
EventTrace('leave', data);
{$ENDIF}
if csDesigning in TControl(Data).ComponentState then begin
// stop the signal, so that the widget does not auto react
g_signal_stop_emission_by_name(PGTKObject(Widget),'leave');
end;
Mess.msg := LM_MOUSELEAVE;
DeliverMessage(Data, Mess);
end;
function gtksize_allocateCB(widget: PGtkWidget; size: pGtkAllocation;
data: gPointer) : GBoolean; cdecl;
{$IFDEF VerboseSizeMsg}
var
w, h: Gint;
{$ENDIF}
begin
Result := CallBackDefaultReturn;
EventTrace('size-allocate', data);
with Size^ do //DebugLn(Format('Trace:[gtksize_allocateCB] %s --> X: %d, Y: %d, Width: %d, Height: %d', [TObject(data).ClassName, X, Y, Width, Height]));
if not (TObject(Data) is TControl) then begin
// owner is not TControl -> ignore
DebugLn('WARNING: gtksize_allocateCB: Data is not TControl. Data=',
DbgS(Data),' ',GetWidgetClassName(Widget));
if Data<>nil then
DebugLn(' Data=',TObject(Data).ClassName);
RaiseGDBException('');
exit;
end;
{$IFDEF VerboseSizeMsg}
w:=0; h:=0;
if Widget^.window<>nil then
gdk_window_get_size(Widget^.window,@w,@h);
DebugLn(['gtksize_allocateCB: ',
DbgSName(TControl(Data)),
' widget=',GetWidgetDebugReport(Widget),
' fixwidget=',DbgS(GetFixedWidget(Widget)),
' NewSize=',Size^.Width,',',Size^.Height,
' GtkPos=',Widget^.allocation.x,',',Widget^.allocation.y,
',',Widget^.allocation.width,'x',Widget^.allocation.height,
' LCLPos=',TControl(Data).Left,',',TControl(Data).Top,
',',TControl(Data).Width,'x',TControl(Data).Height,
' gdkwindow=',w,'x',h]);
{$ENDIF}
{$IFDEF VerboseFormPositioning}
if TControl(Data) is TCustomForm then
DebugLn('VFP gtksize_allocateCB: ',TControl(Data).ClassName,' ',dbgs(Size^.X),',',dbgs(Size^.Y));
{$ENDIF}
{$IFDEF Gtk1}
if GTK_WIDGET_REALIZED(Widget) then begin
{ The gtk sends the size messages after the resizing. Therefore the parent
widget is already resized, but the parent resize message will be emitted
after all its children. So, the gtk resizes in top-bottom order, just like the
LCL. But it sends size messages in bottom-top order, which can result in
many resizes in the LCL.
}
// All resize messages between lcl and gtk1 are cached.
SaveSizeNotification(Widget);
end;
{$ELSE}
SendSizeNotificationToLCL(Widget);
{$ENDIF}
end;
function gtksize_allocate_client(widget: PGtkWidget; size: pGtkAllocation;
data: gPointer): GBoolean; cdecl;
var
MainWidget: PGtkWidget;
ClientWidget: PGtkWidget;
begin
Result := CallBackDefaultReturn;
if (Widget=nil) or (Size=nil) then ;
if (TObject(Data) is TWinControl) then
begin
{$IFDEF VerboseSizeMsg}
DebugLn('gtksize_allocate_client: ',
TControl(Data).Name,':',TControl(Data).ClassName,
' widget=',DbgS(Widget),
' NewSize=',dbgs(Size^.Width),',',dbgs(Size^.Height),
' Allocation='+dbgs(widget^.Allocation.Width)+'x'+dbgs(Widget^.Allocation.Height),
' Requisiton='+dbgs(widget^.Requisition.Width)+'x'+dbgs(Widget^.Requisition.Height)
);
{$ENDIF}
if not TWinControl(Data).HandleAllocated then begin
exit;
end;
MainWidget:=PGtkWidget(TWinControl(Data).Handle);
ClientWidget:=GetFixedWidget(MainWidget);
if GTK_WIDGET_REALIZED(ClientWidget) then begin
// the gtk resizes bottom to top, that means the
// inner widget (client area) is resized before the outer widget
// is resized. Because the LCL reads both sizes, keep this message back.
SaveClientSizeNotification(ClientWidget);
end;
end else begin
// owner is not TWinControl -> ignore
DebugLn('WARNING: gtksize_allocate_client: Data is not TWinControl. Data=',
DbgS(Data));
exit;
end;
end;
function gtkconfigureevent( widget: PGtkWidget; event : PgdkEventConfigure;
data: gPointer) : GBoolean; cdecl;
var
Allocation : TGtkAllocation;
begin
{ This signal is emitted for top level controls only, i.e. only controls
that are not children. Thus, we register this event only for forms.
This event is fired when the form is sized, moved or changes Z order.
}
FillChar(Allocation,SizeOf(TGtkAllocation),0);
with Allocation do begin
X:= Event^.X;
Y:= Event^.Y;
Width:= Event^.Width;
Height:= Event^.Height;
end;
Result:= gtksize_allocateCB( Widget, @Allocation, Data);
end;
function gtkInsertText(widget: PGtkWidget; char : pChar;
NewTextLength : Integer; Position : pgint; data: gPointer) : GBoolean; cdecl;
var
Memo: TCustomMemo;
CurrLength, CutLength: integer;
begin
Result := CallBackDefaultReturn;
{ GTK does not provide its own max. length for memos
we have to do our own. }
if TObject(Data) is TCustomMemo then begin
if (NewTextLength = 1) and (char^ = #13) and (LineEnding = #10) then
char^ := #10;
Memo:= TCustomMemo(Data);
if Memo.MaxLength <= 0 then Exit;
CurrLength:= gtk_text_get_length(PGtkText(widget));
if CurrLength + NewTextLength <= Memo.MaxLength then Exit;
CutLength:= CurrLength + NewTextLength - Memo.MaxLength;
if NewTextLength - CutLength > 0 then
gtk_editable_insert_text(PGtkEditable(widget), char,
NewTextLength - CutLength, Position);
g_signal_stop_emission_by_name(PGtkObject(widget), 'insert_text');
end;
if TObject(Data) is TCustomEdit then
if (NewTextLength = 1) and (char^ = #13) then
g_signal_stop_emission_by_name(PGtkObject(widget), 'insert_text');
end;
function gtkSetEditable( widget: PGtkWidget; data: gPointer) : GBoolean; cdecl;
var
Mess : TLMessage;
begin
EventTrace('Set Editable', data);
if (Widget=nil) then ;
Mess.msg := LM_SETEDITABLE;
Result:= DeliverMessage(Data, Mess) = 0;
end;
function gtkMoveWord( widget: PGtkWidget; data: gPointer) : GBoolean; cdecl;
var
Mess : TLMessage;
begin
EventTrace('Move Word', data);
if (Widget=nil) then ;
Mess.msg := LM_MOVEWORD;
Result:= DeliverMessage(Data, Mess) = 0;
end;
function gtkMovePage( widget: PGtkWidget; data: gPointer) : GBoolean; cdecl;
var
Mess : TLMessage;
begin
EventTrace('Move Page', data);
if (Widget=nil) then ;
Mess.msg := LM_MOVEPAGE;
Result:= DeliverMessage(Data, Mess) = 0;
end;
function gtkMoveToRow( widget: PGtkWidget; data: gPointer) : GBoolean; cdecl;
var
Mess : TLMessage;
begin
EventTrace('Move To Row!!', data);
if (Widget=nil) then ;
Mess.msg := LM_MOVETOROW;
Result:= DeliverMessage(Data, Mess) = 0;
end;
function gtkMoveToColumn( widget: PGtkWidget; data: gPointer) : GBoolean; cdecl;
var
Mess : TLMessage;
begin
EventTrace('MoveToColumn', data);
if (Widget=nil) then ;
Mess.msg := LM_MOVETOCOLUMN;
Result:= DeliverMessage(Data, Mess) = 0;
end;
function gtkKillChar( widget: PGtkWidget; data: gPointer) : GBoolean; cdecl;
var
Mess : TLMessage;
begin
EventTrace('Kill Char', data);
if (Widget=nil) then ;
Mess.msg := LM_KILLCHAR;
Result:= DeliverMessage(Data, Mess) = 0;
end;
function gtkKillWord( widget: PGtkWidget; data: gPointer) : GBoolean; cdecl;
var
Mess : TLMessage;
begin
EventTrace('Kill Word', data);
if (Widget=nil) then ;
Mess.msg := LM_KILLWORD;
Result:= DeliverMessage(Data, Mess) = 0;
end;
function gtkKillLine( widget: PGtkWidget; data: gPointer) : GBoolean; cdecl;
var
Mess : TLMessage;
begin
EventTrace('Kill Line', data);
if (Widget=nil) then ;
Mess.msg := LM_KILLLINE;
Result:= DeliverMessage(Data, Mess) = 0;
end;
function gtkCutToClip( widget: PGtkWidget; data: gPointer) : GBoolean; cdecl;
var
Mess : TLMessage;
{$IFDEF GTK2}
Info: PWidgetInfo;
{$ENDIF}
begin
EventTrace('Cut to clip', data);
if (Widget=nil) then ;
{$IFDEF GTK2}
if (gtk_major_version = 2) and (gtk_minor_version < 17) then
begin
if (Widget <> nil) and (GTK_IS_ENTRY(Widget)) then
begin
Info := GetWidgetInfo(Widget, False);
include(Info^.Flags, wwiInvalidEvent);
end;
end;
{$ENDIF}
Mess.msg := LM_CUT;
Result:= DeliverMessage(Data, Mess) = 0;
end;
function gtkCopyToClip( widget: PGtkWidget; data: gPointer) : GBoolean; cdecl;
var
Mess : TLMessage;
begin
EventTrace('Copy to Clip', data);
if (Widget=nil) then ;
Mess.msg := LM_COPY;
Result:= DeliverMessage(Data, Mess) = 0;
end;
function gtkPasteFromClip( widget: PGtkWidget; data: gPointer) : GBoolean; cdecl;
var
Mess : TLMessage;
{$IFDEF GTK2}
Info: PWidgetInfo;
{$ENDIF}
begin
EventTrace('Paste from clip', data);
if (Widget=nil) then ;
{$IFDEF GTK2}
if (gtk_major_version = 2) and (gtk_minor_version < 17) then
begin
if (Widget <> nil) and (GTK_IS_ENTRY(Widget)) then
begin
Info := GetWidgetInfo(Widget, False);
include(Info^.Flags, wwiInvalidEvent);
end;
end;
{$ENDIF}
Mess.msg := LM_PASTE;
Result:= DeliverMessage(Data, Mess) = 0;
end;
function gtkValueChanged(widget: PGtkWidget; data: gPointer) : GBoolean; cdecl;
var
Mess : TLMessage;
begin
Result := CallBackDefaultReturn;
EventTrace('Value changed', data);
Mess.msg := LM_CHANGED;
DeliverMessage(Data, Mess);
end;
{------------------------------------------------------------------------------
Method: gtkTimerCB
Params: Data - pointer TGtkITimerInfo structure
Returns: 1 - 1 tells gtk to restart the timer
0 - 0 will stop the gtk timer
Callback for gtk timer.
WARNING: There seems to be a bug in gtk-1.2.x which breaks
gtk_timeout_remove so we have to dispose data here & return 0
(s.a. KillTimer).
------------------------------------------------------------------------------}
function gtkTimerCB(Data: gPointer): {$IFDEF Gtk2}gBoolean{$ELSE}gint{$ENDIF}; cdecl;
var
TimerInfo: PGtkITimerinfo;
begin
EventTrace ('TimerCB', nil);
Result := GdkFalse; // assume: timer will stop
TimerInfo:=PGtkITimerinfo(Data);
if (FTimerData=nil) or (FTimerData.IndexOf(Data)<0) then begin
{$IFDEF VerboseTimer}
DebugLn('gtkTimerCB Timer was killed: TimerInfo=',DbgS(TimerInfo));
{$ENDIF}
// timer was killed
Result:=GdkFalse; // stop timer
end else begin
{$IFDEF VerboseTimer}
DebugLn('gtkTimerCB Timer Event: TimerInfo=',DbgS(TimerInfo));
{$ENDIF}
if TimerInfo^.TimerFunc <> nil
then begin
// Call users timer function
//DebugLn(['gtkTimerCB ']);
TimerInfo^.TimerFunc;
Result:=GdkTrue; // timer will go on
end
else begin
Result := GdkFalse; // stop timer
end;
end;
if (Result<>GdkFalse) and (FTimerData.IndexOf(Data)<0) then begin
// timer was killed
// -> stop timer
Result:=GdkFalse;
end;
if Result=GdkFalse then begin
{$IFDEF VerboseTimer}
DebugLn('gtkTimerCB Timer was STOPPED: TimerInfo=',DbgS(TimerInfo));
{$ENDIF}
// timer will be stopped
// -> free timer data, if not already done
if (FTimerData<>nil) and (FTimerData.IndexOf(Data)>=0) then begin
FTimerData.Remove(Data);
Dispose (TimerInfo); // free memory with timer data
end;
end;
end;
function gtkFocusInNotifyCB (widget : PGtkWidget; event : PGdkEvent;
data : gpointer) : GBoolean; cdecl;
var
MessI : TLMEnter;
begin
Result := CallBackDefaultReturn;
//DebugLn('[gtkFocusInNotifyCB] ',TControl(data).Name,':',TObject(data).ClassName);
{$IFDEF EventTrace}
EventTrace ('FocusInNotify (alias Enter)', data);
{$ENDIF}
if (Event=nil) then ;
if csDesigning in TControl(Data).ComponentState then begin
// stop the signal, so that the widget does not auto react
g_signal_stop_emission_by_name(PGTKObject(Widget),'focus-in-event');
end;
MessI.msg := LM_Enter;
DeliverMessage(Data, MessI);
end;
function gtkFocusOutNotifyCB (widget : PGtkWidget; event : PGdkEvent;
data : gpointer) : GBoolean; cdecl;
var
MessI : TLMExit;
begin
Result := CallBackDefaultReturn;
//DebugLn('[gtkFocusOutNotifyCB] ',TControl(data).Name,':',TObject(data).ClassName);
{$IFDEF EventTrace}
EventTrace ('FocusOutNotify (alias Exit)', data);
{$ENDIF}
if (Event=nil) then ;
if csDesigning in TControl(Data).ComponentState then begin
// stop the signal, so that the widget does not auto react
g_signal_stop_emission_by_name(PGTKObject(Widget),'focus-out-event');
end;
MessI.msg := LM_Exit;
DeliverMessage(Data, MessI);
end;
{$IFDEF gtk1}
function gtk_range_get_update_policy(range: PGTKRange): TGtkUpdateType;
begin
result := policy(Range^);
end;
{$ENDIF}
function get_gtk_scroll_type(range: PGTKRange): TGtkScrollType;
{$IFNDEF gtk1}
type
TUnOpaqueTimer=record
timeout_id: guint;
ScrollType: TGTkScrollType;
end;
PUnOpaqueTimer=^TUnopaqueTimer;
{$ENDIF}
begin
{$IFDEF gtk1}
Result := Scroll_type(Range^);
{$ELSE}
if (gtk_major_version=2) and (gtk_minor_version<6) and
(Range^.Timer<>nil) then
{ gtk2 pre gtk2.6 ONLY, tested gtk2.0.
Later versions (gtk2.6+) have a change-value signal that includes scrolltype anyways }
Result := PUnOpaqueTimer(Range^.Timer)^.ScrollType
else
Result := GTK_SCROLL_NONE;
{$ENDIF}
end;
{$IFDEF VerboseGtkScrollbars}
procedure DebugScrollStyle(Scroll: LongInt);
begin
DbgOut('TYPE=');
case Scroll of
GTK_SCROLL_NONE: DbgOut('GTK_SCROLL_NONE ');
GTK_SCROLL_STEP_BACKWARD: DbgOut('GTK_SCROLL_STEP_BACKWARD ');
GTK_SCROLL_STEP_FORWARD: DbgOut('GTK_SCROLL_STEP_FORWARD ');
GTK_SCROLL_PAGE_BACKWARD: DbgOut('GTK_SCROLL_PAGE_BACKWARD ');
GTK_SCROLL_PAGE_FORWARD: DbgOut('GTK_SCROLL_PAGE_FORWARD ');
GTK_SCROLL_JUMP: DbgOut('GTK_SCROLL_JUMP ');
{$ifdef gtk2}
GTK_SCROLL_STEP_UP: DbgOut('GTK_SCROLL_STEP_UP');
GTK_SCROLL_STEP_DOWN: DbgOut('GTK_SCROLL_STEP_DOWN');
GTK_SCROLL_PAGE_UP: DbgOut('GTK_SCROLL_PAGE_UP');
GTK_SCROLL_PAGE_DOWN: DbgOut('GTK_SCROLL_PAGE_DOWN');
GTK_SCROLL_STEP_LEFT: DbgOut('GTK_SCROLL_STEP_LEFT');
GTK_SCROLL_STEP_RIGHT: DbgOut('GTK_SCROLL_STEP_RIGHT');
GTK_SCROLL_PAGE_LEFT: DbgOut('GTK_SCROLL_PAGE_LEFT');
GTK_SCROLL_PAGE_RIGHT: DbgOut('GTK_SCROLL_PAGE_RIGHT');
GTK_SCROLL_START: DbgOut('GTK_SCROLL_START');
GTK_SCROLL_END: DbgOut('GTK_SCROLL_END');
{$endif}
else
DbgOut(IntToStr(Scroll), '->?');
end;
end;
{$ENDIF VerboseGtkScrollbars}
function ScrollTypeToSbCode(IsVertSB: boolean; ScrollType: TGtkScrollType;
UpdatePolicy: TGtkUpdateType): Integer;
begin
case ScrollType of
GTK_SCROLL_STEP_BACKWARD:
if IsVertSB then
Result := SB_LINEUP
else
Result := SB_LINELEFT;
GTK_SCROLL_STEP_FORWARD:
if IsVertSB then
Result := SB_LINEDOWN
else
Result := SB_LINERIGHT;
GTK_SCROLL_PAGE_BACKWARD:
if IsVertSB then
Result := SB_PAGEUP
else
Result := SB_PAGELEFT;
GTK_SCROLL_PAGE_FORWARD:
if IsVertSB then
Result := SB_PAGEDOWN
else
Result := SB_PAGERIGHT;
{$ifdef GTK2}
GTK_SCROLL_STEP_UP:
Result := SB_LINEUP;
GTK_SCROLL_STEP_DOWN:
Result := SB_LINEDOWN;
GTK_SCROLL_PAGE_UP:
Result := SB_PAGEUP;
GTK_SCROLL_PAGE_DOWN:
Result := SB_PAGEDOWN;
GTK_SCROLL_STEP_LEFT:
Result := SB_LINELEFT;
GTK_SCROLL_STEP_RIGHT:
Result := SB_LINERIGHT;
GTK_SCROLL_PAGE_LEFT:
Result := SB_PAGELEFT;
GTK_SCROLL_PAGE_RIGHT:
Result := SB_PAGERIGHT;
GTK_SCROLL_START:
if IsVertSB then
Result := SB_TOP
else
Result := SB_LEFT;
GTK_SCROLL_END:
if IsVertSB then
Result := SB_BOTTOM
else
Result := SB_RIGHT;
{$endif}
else
begin
{$IFDEF VerboseGtkScrollbars}
debugln('ScrollTypeToSbCode: Scroll_type=', IntToStr(ScrollType));
{$Endif}
if UpdatePolicy=GTK_UPDATE_CONTINUOUS then
Result := SB_THUMBTRACK
else
Result := SB_THUMBPOSITION;
end;
end;
end;
function GTKHScrollCB(Adjustment: PGTKAdjustment; data: GPointer): GBoolean; cdecl;
var
Msg: TLMHScroll;
Scroll: PGtkRange;
ScrollType: TGtkScrollType;
begin
Result := CallBackDefaultReturn;
//DebugLn(Format('Trace:[GTKHScrollCB] Value: %d', [RoundToInt(Adjustment^.Value)]));
Scroll := PgtkRange(gtk_object_get_data(PGTKObject(Adjustment), odnScrollBar));
if Scroll<>nil then begin
Msg.Msg := LM_HSCROLL;
with Msg do begin
Pos := Round(Adjustment^.Value);
if Pos < High(SmallPos)
then SmallPos := Pos
else SmallPos := High(SmallPos);
ScrollBar := HWND(PtrUInt(Scroll));
ScrollType := get_gtk_scroll_type(Scroll);
ScrollCode := ScrollTypeToSbCode(False, ScrollType,
gtk_range_get_update_policy(Scroll));
end;
DeliverMessage(Data, Msg);
end;
end;
function GTKVScrollCB(Adjustment: PGTKAdjustment; data: GPointer): GBoolean; cdecl;
var
Msg: TLMVScroll;
Scroll: PGtkRange;
ScrollType: TGtkScrollType;
begin
//TODO: implement SB_THUMBPOSITION message after track is finished
Result := CallBackDefaultReturn;
//DebugLn(Format('Trace:[GTKVScrollCB] Value: %d', [RoundToInt(Adjustment^.Value)]));
Scroll := PgtkRange(gtk_object_get_data(PGTKObject(Adjustment), odnScrollBar));
if Scroll<>nil then begin
Msg.Msg := LM_VSCROLL;
with Msg do begin
Pos := Round(Adjustment^.Value);
if Pos < High(SmallPos)
then SmallPos := Pos
else SmallPos := High(SmallPos);
//DebugLn('GTKVScrollCB A Adjustment^.Value=',dbgs(Adjustment^.Value),' SmallPos=',dbgs(SmallPos));
ScrollBar := HWND(PtrUInt(Scroll));
ScrollType := get_gtk_scroll_type(Scroll);
// GTK1 has a bug with wheel mouse. It sometimes gives the wrong direction.
ScrollCode := ScrollTypeToSbCode(True, ScrollType,
gtk_range_get_update_policy(Scroll));
//DebugLn('GTKVScrollCB B Adjustment^.Value=',dbgs(Adjustment^.Value),' ScrollCode=',dbgs(ScrollCode),' ScrollType=',dbgs(ScrollType));
end;
DeliverMessage(Data, Msg);
end;
end;
{$ifdef gtk2}
function Gtk2RangeScrollCB(ARange: PGtkRange; AScrollType: TGtkScrollType;
AValue: gdouble; AWidgetInfo: PWidgetInfo): gboolean; cdecl;
var
Msg: TLMVScroll;
MaxValue: gdouble;
begin
Result := CallBackDefaultReturn;
//DebugLn(Format('Trace:[Gtk2RangeScrollCB] Value: %d', [RoundToInt(AValue)]));
if G_OBJECT_TYPE(ARange) = gtk_hscrollbar_get_type then
Msg.Msg := LM_HSCROLL
else
Msg.Msg := LM_VSCROLL;
if (AWidgetInfo^.LCLObject is TScrollingWinControl) then
begin
if ARange^.adjustment^.page_size > 0 then
MaxValue := ARange^.adjustment^.upper - ARange^.adjustment^.page_size
else
MaxValue := ARange^.adjustment^.upper;
if (AValue > MaxValue) or (AValue < ARange^.adjustment^.lower) then
begin
Result := not Result;
AValue := MaxValue;
end;
end;
with Msg do
begin
Pos := Round(AValue);
if Pos < High(SmallPos) then
SmallPos := Pos
else
SmallPos := High(SmallPos);
ScrollBar := HWND(PtrUInt(ARange));
ScrollCode := GtkScrollTypeToScrollCode(AScrollType);
end;
Result := DeliverMessage(AWidgetInfo^.LCLObject, Msg) <> 0;
end;
{$endif}
{------------------------------------------------------------------------------
Function: GTKKeySnooper
Params: Widget: The widget for which this event is fired
Event: The keyevent data
FuncData: the user parameter passed when the snooper was installed
Returns: True if other snoopers shouldn't handled
Keeps track of which keys are pressed. The keycode is casted to a pointer and
if it exists in the KeyStateList, it is pressed.
------------------------------------------------------------------------------}
function GTKKeySnooper(Widget: PGtkWidget; Event: PGdkEventKey;
FuncData: gPointer): gInt; cdecl;
var
KeyStateList: TFPList;
procedure UpdateToggleList(const AVKeyCode: Integer);
begin
// Check for a toggle
// If the remove was successfull, the key was on
// else it was off so we should set the toggle flag
if KeyStateList.Remove(Pointer(PtrInt(AVKeyCode or KEYMAP_TOGGLE))) < 0
then KeyStateList.Add(Pointer(PtrInt(AVKeyCode or KEYMAP_TOGGLE)));
end;
procedure UpdateList(const AVKeyCode: Integer; const APressed: Boolean);
begin
if AVKeyCode = 0 then Exit;
if APressed
then begin
if KeyStateList.IndexOf(Pointer(PtrInt(AVKeyCode))) < 0
then KeyStateList.Add(Pointer(PtrInt(AVKeyCode)));
end
else begin
KeyStateList.Remove(Pointer(PtrInt(AVKeyCode)));
end;
end;
const
STATE_MAP: array[0..3] of TShiftStateEnum = (
ssShift,
ssCtrl,
ssAlt,
ssSuper
);
VK_MAP: array[0..3] of array[0..2] of Byte = (
// (Main key, alt key 1, alt key 2) to check
(VK_SHIFT, VK_LSHIFT, VK_RSHIFT),
(VK_CONTROL, VK_LCONTROL, VK_RCONTROL),
(VK_MENU, VK_LMENU, VK_RMENU),
(VK_LWIN, VK_RWIN, 0)
);
var
KeyCode: Word;
KCInfo: TKeyCodeInfo;
VKey: Byte;
Pressed, InState: Boolean;
n: Integer;
ShiftState: TShiftState;
begin
Result := 0;
// TODO: Remove when KeyStateList is obsolete
case gdk_event_get_type(Event) of
GDK_KEY_PRESS: Pressed := True;
GDK_KEY_RELEASE: Pressed := False;
else
// not interested
Exit;
end;
{$ifdef gtk1}
KeyCode := XKeysymToKeycode(gdk_display, Event^.keyval);
{$else}
KeyCode := Event^.hardware_keycode;
{$endif}
//DebugLn('GTKKeySnooper: KeyCode=%u -> %s', [KeyCode, {$IFDEF GTK2} Event^._String {$ELSE} Event^.theString {$ENDIF}]);
if KeyCode > High(MKeyCodeInfo)
then begin
if Pressed
then DebugLn('[WARNING] Key pressed with keycode (%u) larger than expected: K=0x%x S="%s"', [
KeyCode,
Event^.KeyVal,
{$IFDEF GTK2} Event^._String {$ELSE} Event^.theString {$ENDIF}
]);
Exit;
end;
KCInfo := MKeyCodeInfo[KeyCode];
if KCInfo.VKey1 = 0
then begin
if Pressed
then DebugLn('[WARNING] Key pressed without VKey: K=0x%x S="%s"', [
Event^.KeyVal,
{$IFDEF GTK2} Event^._String {$ELSE} Event^.theString {$ENDIF}
]);
Exit;
end;
if FuncData = nil then exit;
KeyStateList := TObject(FuncData) as TFPList;
ShiftState := GTKEventStateToShiftState(Event^.State);
if (KCInfo.Flags and KCINFO_FLAG_SHIFT_XOR_NUM <> 0)
and ((ssShift in ShiftState) xor (ssNum in ShiftState))
then VKey := KCInfo.VKey2
else VKey := KCInfo.VKey1;
UpdateList(VKey, Pressed);
if Pressed then
UpdateToggleList(VKey);
// Add special left and right codes
case Event^.KeyVal of
GDK_Key_Shift_L: UpdateList(VK_LSHIFT, Pressed);
GDK_Key_Shift_R: UpdateList(VK_RSHIFT, Pressed);
GDK_Key_Control_L: UpdateList(VK_LCONTROL, Pressed);
GDK_Key_Control_R: UpdateList(VK_RCONTROL, Pressed);
GDK_Key_Alt_L: UpdateList(VK_LMENU, Pressed);
GDK_Key_Alt_R: UpdateList(VK_RMENU, Pressed);
end;
// Recheck the list against the modifiers
for n := 0 to High(STATE_MAP) do
begin
// Skip our current key, since the state is updated after the event
if VKey = VK_MAP[n][0] then Continue;
if VKey = VK_MAP[n][1] then Continue;
if VKey = VK_MAP[n][2] then Continue;
InState := STATE_MAP[n] in ShiftState;
UpdateList(VK_MAP[n][0], InState);
UpdateList(VK_MAP[n][1], InState);
UpdateList(VK_MAP[n][2], InState);
end;
// if the VKey has multiple VK_codes then SHIFT distinguishes between them
// In that case SHIFT is not pressed
// On the next event the shift flag will be restored based on modifiers
if Pressed and ((KCInfo.Flags and KCINFO_FLAG_SHIFT_XOR_NUM) <> 0)
then begin
UpdateList(VK_SHIFT, False);
UpdateList(VK_LSHIFT, False);
UpdateList(VK_RSHIFT, False);
end;
end;
function gtkYearChanged(Widget: PGtkWidget; data: gPointer) : GBoolean; cdecl;
var
MSG: TLMessage;
begin
Result := CallBackDefaultReturn;
if (Widget=nil) then ;
EventTrace('year changed', data);
MSG.Msg := LM_YEARCHANGED;
DeliverPostMessage(Data, MSG);
end;
procedure GtkDragDataReceived(widget:PGtkWidget; context:PGdkDragContext;
x:gint; y:gint; selection_data:PGtkSelectionData; info:guint; time:guint; Data: gPointer);cdecl;
var
S: TStringList;
I: Integer;
FileName, DecodedFileName: String;
Files: Array of String;
Form: TControl;
Result: Boolean;
U: TURI;
begin
//DebugLn('GtkDragDataReceived ' + PChar(selection_data^.data));
Result := False;
if selection_data^.data <> nil then // data is list of uri
begin
SetLength(Files, 0);
S := TStringList.Create;
try
S.Text := PChar(selection_data^.data);
for I := 0 to S.Count - 1 do
begin
FileName := S[I];
if FileName = '' then Continue;
// uri = protocol://hostname/file name
U := ParseURI(FileName);
if (SameText(U.Host, 'localhost') or (U.Host = '')) and SameText(U.Protocol, 'file')
and URIToFileName(FileName, DecodedFileName) then // convert uri of local files to file name
begin
FileName := DecodedFileName;
end;
// otherwise: protocol and hostname are preserved!
if FileName = '' then Continue;
SetLength(Files, Length(Files) + 1);
Files[High(Files)] := FileName;
//DebugLn('GtkDragDataReceived ' + DbgS(I) + ': ' + PChar(FileName));
end;
finally
S.Free;
end;
if Length(Files) > 0 then
begin
Form := nil;
if (TObject(Data) is TWinControl) then
Form := (TObject(Data) as TWinControl).GetTopParent;
if Form is TCustomForm then
(Form as TCustomForm).IntfDropFiles(Files)
else
if (Application <> nil) and (Application.MainForm <> nil) then
Application.MainForm.IntfDropFiles(Files);
if Application <> nil then
Application.IntfDropFiles(Files);
Result := True;
end;
end;
gtk_drag_finish(Context, Result, false, time);
end;
{------------------------------------------------------------------------------
ClipboardSelectionReceivedHandler
This handler is called whenever a clipboard owner sends data. Because the LCL
caches all requests, this is typically data from another application.
Copy the received selection data record and buffer to
internal record and buffer (ClipboardSelectionData)
------------------------------------------------------------------------------}
procedure ClipboardSelectionReceivedHandler(TargetWidget: PGtkWidget;
SelectionData: PGtkSelectionData; TimeID: guint32; Data: Pointer); cdecl;
var TempBuf: Pointer;
c: PClipboardEventData;
i: integer;
begin
// at any time there can be several requests
// find the request with the correct TimeID
if (Data=nil) or (TargetWidget=nil) then ;
i:=ClipboardSelectionData.Count-1;
while (i>=0) do begin
c:=PClipboardEventData(ClipboardSelectionData[i]);
if c^.TimeID=TimeID then break;
dec(i);
end;
{$IFDEF DEBUG_CLIPBOARD}
DebugLn('[ClipboardSelectionReceivedHandler] A TimeID=',dbgs(TimeID),' RequestIndex=',dbgs(i),
' selection=',dbgs(SelectionData^.selection)+'='+GdkAtomToStr(SelectionData^.selection),
' target=',dbgs(SelectionData^.Target)+'='+GdkAtomToStr(SelectionData^.Target),
' theType=',dbgs(SelectionData^.{$IFDEF Gtk1}theType{$ELSE}_type{$ENDIF})+'='+GdkAtomToStr(SelectionData^.{$IFDEF Gtk1}theType{$ELSE}_type{$ENDIF}),
' format=',dbgs(SelectionData^.format),
' len=',dbgs(SelectionData^.length)
);
{$ENDIF}
if i<0 then exit;
// free old data
if (c^.Data.Data<>nil) then FreeMem(c^.Data.Data);
// copy the information
c^.Data:=SelectionData^;
// copy the raw data to an internal buffer (the gtk buffer will be destroyed
// right after this event)
{$IFDEF DEBUG_CLIPBOARD}
DebugLn('[ClipboardSelectionReceivedHandler] B DataLen=',dbgs(c^.Data.Length));
{$ENDIF}
if (c^.Data.Data<>nil)
and (c^.Data.Length>0) then begin
GetMem(TempBuf,c^.Data.Length);
Move(c^.Data.Data^,TempBuf^,c^.Data.Length);
c^.Data.Data:=TempBuf;
{$IFDEF DEBUG_CLIPBOARD}
DebugLn('[ClipboardSelectionReceivedHandler] C FirstCharacter=',dbgs(ord(PChar(c^.Data.Data)[0])));
{$ENDIF}
end else begin
{if (SelectionData^.Target <> GDK_TARGET_STRING)
and (SelectionData^.length<0) then begin
if gtk_selection_convert (TargetWidget, SelectionData^.selection,
GDK_TARGET_STRING, TimeID)<>GdkFalse
then begin
DebugLn('[ClipboardSelectionReceivedHandler] D TimeID=',dbgs(TimeID),' RequestIndex=',dbgs(i),
' selection=',dbgs(SelectionData^.selection)+'='+GdkAtomToStr(SelectionData^.selection),
' target=',dbgs(SelectionData^.Target)+'='+GdkAtomToStr(SelectionData^.Target),
' theType=',dbgs(SelectionData^.theType)+'='+GdkAtomToStr(SelectionData^.theType),
' format=',dbgs(SelectionData^.format),
' len=',dbgs(SelectionData^.length)
);
end;
end;}
c^.Data.Data:=nil;
end;
end;
{------------------------------------------------------------------------------
ClipboardSelectionRequestHandler
This signal is emitted if someone requests the clipboard data.
Since the lcl clipboard caches all requests this will typically be another
application.
------------------------------------------------------------------------------}
procedure ClipboardSelectionRequestHandler(TargetWidget: PGtkWidget;
SelectionData: PGtkSelectionData; Info: cardinal; TimeID: cardinal;
Data: Pointer); cdecl;
var ClipboardType: TClipboardType;
MemStream: TMemoryStream;
FormatID: cardinal;
Buffer: Pointer;
BufLength: integer;
BitCount: integer;
P: PChar;
begin
{$IFDEF DEBUG_CLIPBOARD}
DebugLn('*** [ClipboardSelectionRequestHandler] START');
{$ENDIF}
if (Data=nil) or (TimeID=0) or (Info=0) or (TargetWidget=nil) then ;
if SelectionData^.Target=0 then exit;
for ClipboardType:=Low(TClipboardType) to High(TClipboardType) do begin
if SelectionData^.Selection=ClipboardTypeAtoms[ClipboardType] then begin
if Assigned(ClipboardHandler[ClipboardType]) then begin
// handler found for this of clipboard
// now create a stream and find a supported format
{$IFDEF DEBUG_CLIPBOARD}
DebugLn('[ClipboardSelectionRequestHandler] "',ClipboardTypeName[ClipboardType],'" Format=',GdkAtomToStr(SelectionData^.Target),' ID=',dbgs(SelectionData^.Target));
{$ENDIF}
MemStream:=TMemoryStream.Create;
try
// the gtk-interface provides automatically some formats, that the lcl
// does not know. Wrapping them to lcl formats ...
FormatID:=SelectionData^.Target;
if ((FormatID=gdk_atom_intern('COMPOUND_TEXT',GdkTrue))
and (ClipboardExtraGtkFormats[ClipboardType][gfCOMPOUND_TEXT]))
or ((FormatID=gdk_atom_intern('UTF8_STRING',GdkTrue))
and (ClipboardExtraGtkFormats[ClipboardType][gfUTF8_STRING]))
or ((FormatID=gdk_atom_intern('STRING',GdkTrue))
and (ClipboardExtraGtkFormats[ClipboardType][gfSTRING]))
or ((FormatID=gdk_atom_intern('TEXT',GdkTrue))
and (ClipboardExtraGtkFormats[ClipboardType][gfTEXT]))
then
FormatID:=gdk_atom_intern('text/plain',GdkTrue);
{$IFDEF DEBUG_CLIPBOARD}
DebugLn('[ClipboardSelectionRequestHandler] FormatID=',dbgs(FormatID),'=',GdkAtomToStr(FormatID),' ',dbgs(ClipboardExtraGtkFormats[ClipboardType][gfCOMPOUND_TEXT]));
{$ENDIF}
// get the requested data by calling the handler for this clipboard type
ClipboardHandler[ClipboardType](FormatID,MemStream);
MemStream.Position:=0;
// build clipboard data for gtk
Buffer:=nil;
BufLength:=0;
BitCount:=8;
// if the format was wrapped, transform it back
if (FormatID=gdk_atom_intern('text/plain',GdkTrue)) then begin
if (SelectionData^.Target=gdk_atom_intern('COMPOUND_TEXT',GdkTrue))
then begin
// transform text/plain to COMPOUND_TEXT
BufLength:=integer(MemStream.Size);
P:=StrAlloc(BufLength+1);
MemStream.Read(P^,BufLength);
P[BufLength]:=#0;
BufLength:=0;
gdk_string_to_compound_text(P,
@SelectionData^.{$ifdef GTK2}_Type{$ELSE}theType{$ENDIF},
@SelectionData^.Format,ppguchar(@Buffer),@BufLength);
StrDispose(P);
gtk_selection_data_set(SelectionData,SelectionData^.Target,
SelectionData^.Format,Buffer,BufLength);
gdk_free_compound_text(Buffer);
exit;
end;
end;
if Buffer=nil then begin
{$IFDEF DEBUG_CLIPBOARD}
DebugLn('[ClipboardSelectionRequestHandler] Default MemStream.Size=',dbgs(MemStream.Size));
{$ENDIF}
BufLength:=integer(MemStream.Size);
if BufLength>0 then begin
GetMem(Buffer,BufLength);
MemStream.Read(Buffer^,BufLength);
{SetLength(s,MemStream.Size);
MemStream.Position:=0;
MemStream.Read(s[1],MemStream.Size);
DebugLn(' >>> "',s,'"');}
end;
end;
{$IFDEF DEBUG_CLIPBOARD}
DebugLn('[ClipboardSelectionRequestHandler] Len=',dbgs(BufLength));
{$ENDIF}
gtk_selection_data_set(SelectionData,SelectionData^.Target,BitCount,
Buffer,BufLength);
if Buffer<>nil then
FreeMem(Buffer);
finally
MemStream.Free;
end;
end;
break;
end;
end;
end;
{------------------------------------------------------------------------------
ClipboardSelectionLostOwnershipHandler
This signal is emitted if another application gets the clipboard ownership.
------------------------------------------------------------------------------}
function ClipboardSelectionLostOwnershipHandler(TargetWidget: PGtkWidget;
EventSelection: PGdkEventSelection; Data: Pointer): cardinal; cdecl;
var ClipboardType: TClipboardType;
begin
if (Data=nil) or (TargetWidget=nil) then ;
//DebugLn('*** [ClipboardSelectionLostOwnershipHandler] ',DbgS(targetwidget));
for ClipboardType:=Low(TClipboardType) to High(TClipboardType) do
if EventSelection^.Selection=ClipboardTypeAtoms[ClipboardType] then begin
{$IFDEF DEBUG_CLIPBOARD}
DebugLn('*** [ClipboardSelectionLostOwnershipHandler] ',ClipboardTypeName[ClipboardType]);
{$ENDIF}
if (ClipboardWidget<>nil)
and (gdk_selection_owner_get(ClipboardTypeAtoms[ClipboardType])
<> GetControlWindow(ClipboardWidget))
and Assigned(ClipboardHandler[ClipboardType]) then begin
// handler found for this type of clipboard
{$IFDEF DEBUG_CLIPBOARD}
DebugLn('[ClipboardSelectionLostOwnershipHandler] ',ClipboardTypeName[ClipboardType]);
{$ENDIF}
ClipboardHandler[ClipboardType](0,nil);
ClipboardHandler[ClipboardType]:=nil;
end;
break;
end;
Result:=1;
end;
{-------------------------------------------------------------------------------
procedure GTKStyleChanged(Widget: PGtkWidget; previous_style : PGTKStyle;
Data: Pointer); cdecl;
Handler for style changes. For example the user changes the theme.
But also called on every widget realize, so it should not release all styles
everytime.
-------------------------------------------------------------------------------}
procedure GTKStyleChanged(Widget: PGtkWidget; previous_style : PGTKStyle;
Data: Pointer); cdecl;
begin
if (Widget=nil) or (Data=nil) or (previous_style=nil) then ;
{$IFDEF EventTrace}
EventTrace('style-set', nil);
{$ENDIF}
//ReleaseAllStyles;
end;
function gtkListBoxSelectionChangedAfter(widget: PGtkWidget; data: gPointer
): GBoolean; cdecl;
var
Mess: TLMessage;
GtkList: PGtkList;
begin
Result := CallBackDefaultReturn;
{$IFDEF EventTrace}
EventTrace('gtkListSelectionChangedAfter', data);
{$ENDIF}
GtkList:=PGtkList(widget);
if (GtkList^.selection = nil) or (LockOnChange(PGtkObject(widget),0) > 0) then
Exit;
FillChar(Mess,SizeOf(Mess),0);
Mess.msg := LM_SelChange;
if gtkListGetSelectionMode(GtkList)=GTK_SELECTION_SINGLE then
gtk_list_set_selection_mode(GtkList,GTK_SELECTION_BROWSE);
DeliverMessage(Data, Mess);
end;
{$I gtkDragCallback.inc}
{$I gtkComboBoxCallback.inc}
{$I gtkPageCallback.inc}
{$IFDEF ASSERT_IS_ON}
{$UNDEF ASSERT_IS_ON}
{$C-}
{$ENDIF}
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