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Qt: fixed TWinControl.PaintTo(). issue #36883

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git-svn-id: trunk@62903 -
This commit is contained in:
zeljko 2020-04-07 09:07:25 +00:00
parent e25e50dcd3
commit fc34d6ba75
1 changed files with 16 additions and 34 deletions
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50
lcl/interfaces/qt/qtwscontrols.pp
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@ -387,54 +387,36 @@ class procedure TQtWSWinControl.PaintTo(const AWinControl: TWinControl;
var
Context: TQtDeviceContext absolute ADC;
Widget: TQtWidget;
Window: TQtMainWindow;
Pixmap: TQtPixmap;
DCSize: TSize;
APoint: TQtPoint;
ARect, GRect: TRect;
OffsetY: Integer;
NewHandle: QPixmapH;
ARect: TRect;
Pixmap: QPixmapH;
ASourceRegion: QRegionH;
AFlags: Integer;
begin
if not WSCheckHandleAllocated(AWincontrol, 'PaintTo') or (ADC = 0) then
Exit;
Widget := TQtWidget(AWinControl.Handle);
ARect := Widget.getFrameGeometry;
GRect := Widget.getGeometry;
// calculate OffsetY only in case when we are form
if (AWinControl.FCompStyle = csForm) and Assigned(TCustomForm(AWinControl).Menu) then
begin
Window := TQtMainWindow(TCustomForm(AWinControl).Handle);
if Window.MenuBar.getVisible then
OffsetY := Window.MenuBar.getHeight;
end else
OffsetY := 0;
with DCSize, ARect do
begin
cx := Right - Left;
cy := Bottom - Top;
end;
Pixmap := TQtPixmap.Create(@DCSize);
Pixmap := QPixmap_create(PSize(@DCSize));
try
OffsetRect(GRect, -ARect.Left, -ARect.Top);
Pixmap.grabWidget(Widget.Widget, 0, 0);
APoint := QtPoint(0, 0);
ASourceRegion := QRegion_Create(0, 0, DCSize.cx, DCSize.cy);
AFlags := QWidgetDrawChildren;
if (Widget is TQtMainWindow) then
AFlags := AFlags or QWidgetDrawWindowBackground;
QWidget_render(Widget.Widget, QPaintDeviceH(Pixmap), @APoint, ASourceRegion, AFlags);
QRegion_destroy(ASourceRegion);
// apply offset if we have main menu
APoint := QtPoint(X, Y + OffsetY);
ARect := Rect(0, 0, Pixmap.getWidth, Pixmap.getHeight);
// also scale pixmap by height of menu, so it's catched in our image.
if OffsetY <> 0 then
begin
NewHandle := QPixmap_create();
QPixmap_scaled(Pixmap.Handle, NewHandle, Pixmap.GetWidth, Pixmap.GetHeight - OffsetY);
Context.drawPixmap(@APoint, NewHandle, @ARect);
QPixmap_destroy(NewHandle);
end else
Context.drawPixmap(@APoint, Pixmap.Handle, @ARect);
APoint := QtPoint(X, Y);
ARect := Rect(0, 0, QPixmap_width(Pixmap), QPixmap_height(Pixmap));
Context.drawPixmap(@APoint, Pixmap, @ARect);
finally
Pixmap.Free;
QPixmap_destroy(Pixmap);
end;
end;