paweld/lazarus
1
0
Fork 0
mirror of https://gitlab.com/freepascal.org/lazarus/lazarus.git synced 2025-08-17 19:19:19 +02:00
Code Issues Packages Projects Releases Wiki Activity

gtk3: implemented Gtk3MouseWheel() event

Browse Source 
git-svn-id: trunk@55105 -
This commit is contained in:
zeljko 2017-05-26 13:49:35 +00:00
parent 92595f0745
commit e2c35dd6d1
2 changed files with 61 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
lcl/interfaces/gtk3/gtk3procs.pas
View File

@ -291,6 +291,7 @@ function GtkAllocationFromRect(R: TRect): TGtkAllocation;
function GdkKeyToLCLKey(AValue: Word): Word;
function GdkModifierStateToLCL(AState: TGdkModifierType; const AIsKeyEvent: Boolean): PtrInt;
function GdkModifierStateToShiftState(AState: TGdkModifierType): TShiftState;
procedure SetWindowCursor(AWindow: PGdkWindow; ACursor: HCursor;
ARecursive: Boolean; ASetDefault: Boolean);
@ -682,6 +683,34 @@ begin
Result := Result or MK_CONTROL;
end;
function GdkModifierStateToShiftState(AState: TGdkModifierType): TShiftState;
begin
Result := [];
if AState and GDK_BUTTON1_MASK <> 0 then
Include(Result, ssLeft);
if AState and GDK_BUTTON2_MASK <> 0 then
Include(Result, ssRight);
if AState and GDK_BUTTON3_MASK <> 0 then
Include(Result, ssMiddle);
if AState and GDK_BUTTON4_MASK <> 0 then
Include(Result, ssExtra1);
if AState and GDK_BUTTON5_MASK <> 0 then
Include(Result, ssExtra2);
if AState and GDK_SHIFT_MASK <> 0 then
Include(Result, ssShift);
if AState and GDK_CONTROL_MASK <> 0 then
Include(Result, ssCtrl);
if AState and GDK_META_MASK <> 0 then
Include(Result, ssAlt);
end;
procedure AddCharsetEncoding(CharSet: Byte; CharSetReg, CharSetCod: CharSetStr;
ToEnum:boolean=true; CrPart:boolean=false; CcPart:boolean=false);
var

32
lcl/interfaces/gtk3/gtk3widgets.pas
View File

@ -1240,6 +1240,11 @@ begin
// Result := TGtk3Widget(Data).GtkEventShowHide(Widget, Event);
// DebugLn('****** GDK_VISIBILITY_NOTIFY FOR ' + dbgsName(TGtk3Widget(Data).LCLObject));
end;
31: // GDK_SCROLL
begin
// DebugLn('****** GDK_SCROLL ' + dbgsName(TGtk3Widget(Data).LCLObject));
Result := TGtk3Widget(Data).GtkEventMouseWheel(Widget, Event);
end;
32: // GDK_WINDOW_STATE
begin
// DebugLn('****** GDK_WINDOW_STATE FOR ' + dbgsName(TGtk3Widget(Data).LCLObject));
@ -1790,10 +1795,37 @@ end;
function TGtk3Widget.GtkEventMouseWheel(Sender: PGtkWidget; Event: PGdkEvent
): Boolean; cdecl;
var
Msg: TLMMouseEvent;
EventXY: TPoint;
begin
// gtk3 have ugly bug with scroll-event
// https://bugzilla.gnome.org/show_bug.cgi?id=675959
Result := False;
EventXY := Point(TruncToInt(Event^.scroll.x), TruncToInt(Event^.scroll.y));
FillChar(Msg{%H-},SizeOf(Msg),0);
Msg.Msg := LM_MOUSEWHEEL;
//DebugLn('Scroll ',Format('deltaX %2.2n deltaY %2.2n x %2.2n y %2.2n rootx %2.2n rooty %2.2n',
// [Event^.scroll.delta_x, Event^.scroll.delta_y, Event^.scroll.x, Event^.scroll.y,
// Event^.scroll.x_root, Event^.scroll.y_root]));
if Event^.scroll.direction = GDK_SCROLL_UP then
Msg.WheelDelta := 120
else
if Event^.scroll.direction = GDK_SCROLL_DOWN then
Msg.WheelDelta := -120
else
exit;
Msg.X := EventXY.X;
Msg.Y := EventXY.Y;
Msg.State := GdkModifierStateToShiftState(Event^.scroll.state);
Msg.UserData := LCLObject;
Msg.Button := 0;
NotifyApplicationUserInput(LCLObject, Msg.Msg);
if Widget^.get_parent <> nil then
Event^.motion.send_event := NO_PROPAGATION_TO_PARENT;
if DeliverMessage(Msg, True) <> 0 then
Result := True;
end;
function TGtk3Widget.IsValidHandle: Boolean;