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Qt: fixed extra mousewheel events on TQtAbstractControl based widgets.issue #25992

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git-svn-id: trunk@44667 -
This commit is contained in:
zeljko 2014-04-10 14:35:20 +00:00
parent 532b6e1e0f
commit 9718b5cd57
1 changed files with 35 additions and 9 deletions
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44
lcl/interfaces/qt/qtwidgets.pas
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@ -410,6 +410,7 @@ type
FHScrollbar: TQtScrollBar;
FVScrollbar: TQtScrollbar;
public
function EventFilter(Sender: QObjectH; Event: QEventH): Boolean; cdecl; override;
procedure grabMouse; override;
function GetContainerWidget: QWidgetH; override;
function getClientOffset: TPoint; override;
@ -6549,8 +6550,8 @@ begin
{$IFDEF QTSCROLLABLEFORMS}
if Assigned(ScrollArea) and not IsMDIChild then
begin
if QEvent_type(Event) in [QEventPaint,
QEventContextMenu] then
if QEvent_type(Event) in
[QEventPaint, QEventContextMenu, QEventWheel] then
exit;
end;
{$ENDIF}
@ -8070,16 +8071,29 @@ begin
else
if (QEvent_type(Event) = QEventWheel) and Assigned(FOwner) and
(
{$IFDEF QTSCROLLABLEFORMS}
(FOwner is TQtWindowArea) or
{$ENDIF}
(FOwner is TQtCustomControl)
(FOwner is TQtAbstractScrollArea)
) then
begin
Result := inherited EventFilter(Sender, Event);
// do not scroll when disabled
// issue #25992
if not getVisible then
Result := FOwner.SlotMouseWheel(FOwner.Widget, Event)
else
Result := inherited EventFilter(Sender, Event);
// DebugLn('TQtScrollBar.EventFilter: QEventWheel ',dbgsName(LCLObject),' Result=',dbgs(Result));
// do not scroll when disabled or issue #25992
if not getEnabled then
Result := True;
Result := True
else
if not getVisible then
begin
if {$IFDEF QTSCROLLABLEFORMS}(FOwner is TQtWindowArea) or {$ENDIF}
(FOwner.ChildOfComplexWidget in
[ccwScrollingWinControl, ccwScrollingWindow]) then
Result := True;
end;
end else
Result := False;
if (QEvent_type(Event) = QEventKeyRelease) and not
@ -15307,6 +15321,18 @@ begin
end;
end;
function TQtAbstractScrollArea.EventFilter(Sender: QObjectH; Event: QEventH
): Boolean; cdecl;
begin
Result := False;
if (QEvent_type(Event) = QEventWheel) and
not (FChildOfComplexWidget in
[ccwCustomControl, ccwScrollingWinControl, ccwScrollingWindow]) then
// issue #25992.Do not propagate wheel event to lcl, it is done via TQtScrollBar.EventFilter.
else
Result:=inherited EventFilter(Sender, Event);
end;
procedure TQtAbstractScrollArea.grabMouse;
var
W: QWidgetH;