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Use hairlines judiciously to draw very thin patterned strokes correctly.

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This prevents some dashed or dotted lines from being skipped when printing
or in print preview.

Change-Id: I9d0a8ae743241d17d65935f4bf0d122e4313bff8
This commit is contained in:
Kohei Yoshida
2014-01-14 18:40:10 -05:00
parent 2c702a31f0
commit 3136b39e0d
1 changed files with 23 additions and 3 deletions
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26
drawinglayer/source/primitive2d/borderlineprimitive2d.cxx
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@@ -251,7 +251,6 @@ namespace drawinglayer
const double fExt = getWidth(rViewInformation); // Extend a lot: it'll be clipped after
const basegfx::B2DPoint aTmpStart(getStart() - (fExt * aVector));
const basegfx::B2DPoint aTmpEnd(getEnd() + (fExt * aVector));
xRetval.realloc(1);
// Get which is the line to show
bool bIsSolidline = isSolidLine();
@@ -273,6 +272,7 @@ namespace drawinglayer
aPolygon.append( getStart() );
aPolygon.append( getEnd() );
xRetval.realloc(1);
xRetval[0] = Primitive2DReference(new PolygonHairlinePrimitive2D(
aPolygon,
aColor));
@@ -308,8 +308,28 @@ namespace drawinglayer
aDashed.setB2DPolygon( i, aClipped.getB2DPolygon( 0 ) );
}
xRetval[0] = Primitive2DReference(new PolyPolygonColorPrimitive2D(
basegfx::B2DPolyPolygon( aDashed ), aColor));
sal_uInt32 n = aDashed.count();
xRetval.realloc(n);
for (sal_uInt32 i = 0; i < n; ++i)
{
basegfx::B2DPolygon aDash = aDashed.getB2DPolygon(i);
if (bIsHairline)
{
// Convert a rectanglar polygon into a line.
basegfx::B2DPolygon aDash2;
basegfx::B2DRange aRange = aDash.getB2DRange();
basegfx::B2DPoint aPt(aRange.getMinX(), aRange.getMinY());
aDash2.append(basegfx::B2DPoint(aRange.getMinX(), aRange.getMinY()));
aDash2.append(basegfx::B2DPoint(aRange.getMaxX(), aRange.getMinY()));
xRetval[i] = Primitive2DReference(
new PolygonHairlinePrimitive2D(aDash2, aColor));
}
else
{
xRetval[i] = Primitive2DReference(
new PolyPolygonColorPrimitive2D(basegfx::B2DPolyPolygon(aDash), aColor));
}
}
}
}
}