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Fixes arc drawing in Linux

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git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@1503 8e941d3f-bd1b-0410-a28a-d453659cc2b4
This commit is contained in:
sekelsenmat
2011-02-14 11:12:48 +00:00
parent a3b8d5787d
commit 4a3c7b8a24
1 changed files with 23 additions and 1 deletions
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24
applications/fpvviewer/fpvectorialsrc/fpvtocanvas.pas
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@ -128,7 +128,7 @@ var
CurArc: TvCircularArc;
FinalStartAngle, FinalEndAngle, tmpAngle: double;
BoundsLeft, BoundsTop, BoundsRight, BoundsBottom,
IntStartAngle, IntAngleLength: Integer;
IntStartAngle, IntAngleLength, IntTmp: Integer;
//
CurDim: TvAlignedDimension;
Points: array of TPoint;
@ -233,12 +233,34 @@ begin
end;}
IntStartAngle := Round(16*FinalStartAngle);
IntAngleLength := Abs(Round(16*(FinalEndAngle - FinalStartAngle)));
// On Gtk2 and Carbon, the Left really needs to be to the Left of the Right position
// The same for the Top and Bottom
// On Windows it works fine either way
// On Gtk2 if the positions are inverted then the arcs are screwed up
// In Carbon if the positions are inverted, then the arc is inverted
if BoundsLeft > BoundsRight then
begin
IntTmp := BoundsLeft;
BoundsLeft := BoundsRight;
BoundsRight := IntTmp;
end;
if BoundsTop > BoundsBottom then
begin
IntTmp := BoundsTop;
BoundsTop := BoundsBottom;
BoundsBottom := IntTmp;
end;
// Arc(ALeft, ATop, ARight, ABottom, Angle16Deg, Angle16DegLength: Integer);
ADest.Arc(
BoundsLeft, BoundsTop, BoundsRight, BoundsBottom,
IntStartAngle, IntAngleLength
);
// Debug info
// {$define FPVECTORIALDEBUG}
// {$ifdef FPVECTORIALDEBUG}
// WriteLn(Format('Drawing Arc x1y1=%d,%d x2y2=%d,%d start=%d end=%d',
// [BoundsLeft, BoundsTop, BoundsRight, BoundsBottom, IntStartAngle, IntAngleLength]));
// {$endif}
{ ADest.TextOut(CoordToCanvasX(CurArc.CenterX), CoordToCanvasY(CurArc.CenterY),
Format('R=%d S=%d L=%d', [Round(CurArc.Radius*AMulX), Round(FinalStartAngle),
Abs(Round((FinalEndAngle - FinalStartAngle)))]));