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Created a new method Graphics::beginTransparencyLayer(), to help with compositing semi-transparent rendering.

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This commit is contained in:
Julian Storer 2010-11-26 17:29:27 +00:00
parent 640a335537
commit 1629f9f66a
20 changed files with 1202 additions and 993 deletions
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16
src/gui/components/juce_Component.cpp
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@ -1836,7 +1836,7 @@ void Component::paintComponentAndChildren (Graphics& g)
g.saveState();
g.addTransform (*child.affineTransform_);
if (child.flags.dontClipGraphicsFlag || g.reduceClipRegion (child.getBounds()))
if ((child.flags.dontClipGraphicsFlag && ! g.isClipEmpty()) || g.reduceClipRegion (child.getBounds()))
child.paintWithinParentContext (g);
g.restoreState();
@ -1904,17 +1904,9 @@ void Component::paintEntireComponent (Graphics& g, const bool ignoreAlphaLevel)
{
if (componentTransparency < 255)
{
Image temp (flags.opaqueFlag ? Image::RGB : Image::ARGB,
getWidth(), getHeight(), ! flags.opaqueFlag, Image::NativeImage);
{
Graphics tempG (temp);
tempG.reduceClipRegion (g.getClipBounds());
paintEntireComponent (tempG, true);
}
g.setColour (Colours::black.withAlpha (getAlpha()));
g.drawImageAt (temp, 0, 0);
g.beginTransparencyLayer (getAlpha());
paintComponentAndChildren (g);
g.endTransparencyLayer();
}
}
else