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Fix fdo#49508 incorrect square gradients in slideshow.

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Make sure client code sees isotrophic aspect ratio for the
square gradient case. This somehow never worked.
This commit is contained in:
Thorsten Behrens
2012-05-04 21:50:13 +02:00
parent b134e75c5e
commit f7d3567c1b
1 changed files with 10 additions and 4 deletions
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14
basegfx/source/tools/gradienttools.cxx
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@@ -185,7 +185,8 @@ namespace basegfx
const B2DVector& rOffset,
sal_uInt32 nSteps,
double fBorder,
double fAngle)
double fAngle,
bool bSquare)
{
o_rGradientInfo.maTextureTransform.identity();
o_rGradientInfo.maBackTextureTransform.identity();
@@ -238,7 +239,10 @@ namespace basegfx
o_rGradientInfo.maTextureTransform.translate(fTargetOffsetX, fTargetOffsetY);
// prepare aspect for texture
o_rGradientInfo.mfAspectRatio = (0.0 != fTargetSizeY) ? fTargetSizeX / fTargetSizeY : 1.0;
if( bSquare )
o_rGradientInfo.mfAspectRatio = 1.0; // since we want a square
else
o_rGradientInfo.mfAspectRatio = (0.0 != fTargetSizeY) ? fTargetSizeX / fTargetSizeY : 1.0;
// build transform from u,v to [0.0 .. 1.0]. As base, use inverse texture transform
o_rGradientInfo.maBackTextureTransform = o_rGradientInfo.maTextureTransform;
@@ -322,7 +326,8 @@ namespace basegfx
rOffset,
nSteps,
fBorder,
fAngle);
fAngle,
true);
return o_rGradientInfo;
}
@@ -338,7 +343,8 @@ namespace basegfx
rOffset,
nSteps,
fBorder,
fAngle);
fAngle,
false);
return o_rGradientInfo;
}