fix set color regression in cairo canvas

- the cairo_set_source_rgba should be called with non-alpha-pre-multiplied color values - fixes fdo#33591 and fdo#35681

fix set color regression in cairo canvas
- the cairo_set_source_rgba should be called with non-alpha-pre-multiplied color values - fixes fdo#33591 and fdo#35681
72eff9e6 · Radek Doulik · 4cb99334 · 72eff9e6
Kaydet (Commit) 72eff9e6 authored Tem 12, 2011 tarafından Radek Doulik
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Showing with 4 additions and 6 deletions

cairo_canvashelper.cxx canvas/source/cairo/cairo_canvashelper.cxx +4 -6

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--- a/canvas/source/cairo/cairo_canvashelper.cxx
+++ b/canvas/source/cairo/cairo_canvashelper.cxx
@@ -128,13 +128,11 @@ namespace cairocanvas
    {
        if( rColor.getLength() > 3 )
        {
-            const double alpha = rColor[3];
            cairo_set_source_rgba( pCairo,
-                                   alpha*rColor[0],
+                                   rColor[0],
-                                   alpha*rColor[1],
+                                   rColor[1],
-                                   alpha*rColor[2],
+                                   rColor[2],
-                                   alpha );
+                                   rColor[3] );
        }
        else if( rColor.getLength() == 3 )
            cairo_set_source_rgb( pCairo,