void Init(SkCanvas *aCanvas, const DrawOptions& aOptions)
{
mPaint.setXfermodeMode(GfxOpToSkiaOp(aOptions.mCompositionOp));
mCanvas = aCanvas;
//TODO: Can we set greyscale somehow?
if (aOptions.mAntialiasMode != AntialiasMode::NONE) {
mPaint.setAntiAlias(true);
} else {
mPaint.setAntiAlias(false);
}
// TODO: We could skip the temporary for operator_source and just
// clear the clip rect. The other operators would be harder
// but could be worth it to skip pushing a group.
if (!IsOperatorBoundByMask(aOptions.mCompositionOp)) {
mPaint.setXfermodeMode(SkXfermode::kSrcOver_Mode);
SkPaint temp;
temp.setXfermodeMode(GfxOpToSkiaOp(aOptions.mCompositionOp));
temp.setAlpha(U8CPU(aOptions.mAlpha*255));
//TODO: Get a rect here
mCanvas->saveLayer(nullptr, &temp);
mNeedsRestore = true;
} else {
mPaint.setAlpha(U8CPU(aOptions.mAlpha*255.0));
mAlpha = aOptions.mAlpha;
}
mPaint.setFilterBitmap(true);
}
void Init(SkCanvas *aCanvas, const DrawOptions& aOptions, const Rect* aMaskBounds)
{
mPaint.setXfermodeMode(GfxOpToSkiaOp(aOptions.mCompositionOp));
mCanvas = aCanvas;
//TODO: Can we set greyscale somehow?
if (aOptions.mAntialiasMode != AntialiasMode::NONE) {
mPaint.setAntiAlias(true);
} else {
mPaint.setAntiAlias(false);
}
Rect clipBounds = GetClipBounds(aCanvas);
bool needsGroup = !IsOperatorBoundByMask(aOptions.mCompositionOp) &&
(!aMaskBounds || !aMaskBounds->Contains(clipBounds));
// TODO: We could skip the temporary for operator_source and just
// clear the clip rect. The other operators would be harder
// but could be worth it to skip pushing a group.
if (needsGroup) {
mPaint.setXfermodeMode(SkXfermode::kSrcOver_Mode);
SkPaint temp;
temp.setXfermodeMode(GfxOpToSkiaOp(aOptions.mCompositionOp));
temp.setAlpha(U8CPU(aOptions.mAlpha*255+0.5));
//TODO: Get a rect here
mCanvas->saveLayer(nullptr, &temp);
mNeedsRestore = true;
} else {
mPaint.setAlpha(U8CPU(aOptions.mAlpha*255.0+0.5));
mAlpha = aOptions.mAlpha;
}
mPaint.setFilterLevel(SkPaint::kLow_FilterLevel);
}
SkColor ColorToSkColor(const Color &color, Float aAlpha)
{
//XXX: do a better job converting to int
return SkColorSetARGB(U8CPU(color.a*aAlpha*255.0), U8CPU(color.r*255.0),
U8CPU(color.g*255.0), U8CPU(color.b*255.0));
}
