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support for switching the alpha drawing mode when the blending mode changes

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@11100 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Stephan Aßmus
2005-01-28 13:07:21 +00:00
parent 8eca754bfd
commit d4734e04d1
1 changed files with 22 additions and 2 deletions
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src/servers/app/server/Painter/Painter.cpp
+22 -2
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@@ -51,6 +51,9 @@ Painter::Painter()
fOrigin(0.0, 0.0),
fClippingRegion(NULL),
fDrawingMode(B_OP_COPY),
fAlphaSrcMode(B_PIXEL_ALPHA),
// fAlphaSrcMode(B_CONSTANT_ALPHA),
fAlphaFncMode(B_ALPHA_OVERLAY),
fPenLocation(0.0, 0.0),
fPatternHandler(new PatternHandler()),
fFont(be_plain_font),
@@ -87,7 +90,9 @@ Painter::AttachToBuffer(RenderingBuffer* buffer)
buffer->BytesPerRow());
fPixelFormat = new pixfmt(*fBuffer, fPatternHandler);
fPixelFormat->set_drawing_mode(DrawingModeFactory::DrawingModeFor(fDrawingMode));
fPixelFormat->set_drawing_mode(DrawingModeFactory::DrawingModeFor(fDrawingMode,
fAlphaSrcMode,
fAlphaFncMode));
fBaseRenderer = new renderer_base(*fPixelFormat);
@@ -242,7 +247,22 @@ Painter::SetDrawingMode(drawing_mode mode)
if (fDrawingMode != mode) {
fDrawingMode = mode;
if (fPixelFormat) {
fPixelFormat->set_drawing_mode(DrawingModeFactory::DrawingModeFor(fDrawingMode));
fPixelFormat->set_drawing_mode(DrawingModeFactory::DrawingModeFor(fDrawingMode,
fAlphaSrcMode,
fAlphaFncMode));
}
}
}
// SetBlendingMode
void
Painter::SetBlendingMode(source_alpha alphaSrcMode, alpha_function alphaFncMode)
{
if (fAlphaSrcMode != alphaSrcMode || fAlphaFncMode != alphaFncMode) {
if (fDrawingMode == B_OP_ALPHA && fPixelFormat) {
fPixelFormat->set_drawing_mode(DrawingModeFactory::DrawingModeFor(fDrawingMode,
fAlphaSrcMode,
fAlphaFncMode));
}
}
}