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Qt: fixed TQtWidgetSet.DrawText() when ARect param is out of bounds of clipRect, also added QT_DRAWTEXT_MAP_TO_CLIPRECT define if someone want's that drawText respects DT_WORDBREAK flag if included. fixes #17678

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git-svn-id: trunk@27779 -
This commit is contained in:
zeljko 2010-10-21 07:27:47 +00:00
parent ab775d508d
commit cd8a98a15d
1 changed files with 30 additions and 2 deletions
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32
lcl/interfaces/qt/qtwinapi.inc
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@ -1200,6 +1200,9 @@ var
QtDC: TQtDeviceContext;
F: Integer;
Pt: TPoint;
ClipRect: TRect;
B: Boolean;
procedure CalculateOffsetWithAngle(const AFontAngle: Integer;
var TextLeft,TextTop: Integer);
@ -1245,7 +1248,7 @@ var
begin
{$ifdef VerboseQtWinAPI}
WriteLn('[WinAPI DrawText] DC: ', dbghex(DC), ' Str: ', string(Str),
' CalcRect: ', dbgs((Flags and DT_CALCRECT) = DT_CALCRECT));
' CalcRect: ', dbgs((Flags and DT_CALCRECT) = DT_CALCRECT),' ARect ',dbgs(ARect));
{$endif}
Result := 0;
@ -1260,6 +1263,31 @@ begin
else
WideStr := GetUtf8String(Str);
B := QtDC.getClipping;
if B and
(Flags and DT_NOCLIP = DT_NOCLIP) and
(Flags and DT_WORDBREAK = DT_WORDBREAK) then
begin
ClipRect := QtDC.getClipRegion.getBoundingRect;
//this is just to get same behaviour as gtk2 and win32
//IMO, we should change ARect.Left and/or ARect.Top if smaller than
//clip rect (map to clipRect). Then multiline text is drawn ok.
//look at issue http://bugs.freepascal.org/view.php?id=17678 . zeljko.
if (ARect.Left < ClipRect.Left) or (ARect.Top < ClipRect.Top) then
begin
{$note remove ifdef if I'm wrong about DT_WORDBREAK OBSERVATION}
{$IFDEF QT_DRAWTEXT_MAP_TO_CLIPRECT}
if ARect.Left < ClipRect.Left then
ARect.Left := ClipRect.Left;
if ARect.Top < ClipRect.Top then
ARect.Top := ClipRect.Top;
{$ELSE}
Flags := Flags and not DT_WORDBREAK;
{$ENDIF}
end;
end;
F := DTFlagsToQtFlags(Flags);
QtDC.Metrics.BoundingRect(@R, @ARect, F, @WideStr);
@ -1296,7 +1324,7 @@ begin
// we cannot fit into rectangle, so use DT_SINGLELINE.See #17329.
// http://msdn.microsoft.com/en-us/library/dd162498%28v=VS.85%29.aspx
if QtDC.getClipping and
if B and
(Flags and DT_NOCLIP = DT_NOCLIP) and
(Flags and DT_WORDBREAK = DT_WORDBREAK) and
(Flags and DT_SINGLELINE = DT_SINGLELINE) and