void onDraw(int loops, SkCanvas* canvas) override {
SkLayerDrawLooper::Builder looperBuilder;
{
SkLayerDrawLooper::LayerInfo info;
info.fPaintBits = SkLayerDrawLooper::kMaskFilter_Bit
| SkLayerDrawLooper::kColorFilter_Bit;
info.fColorMode = (SK_XFERMODE_MODE_PARAM)SkBlendMode::kSrc;
info.fOffset = SkPoint::Make(SkIntToScalar(-1), SkIntToScalar(0));
info.fPostTranslate = false;
SkPaint* paint = looperBuilder.addLayerOnTop(info);
paint->setMaskFilter(SkBlurMaskFilter::Make(kNormal_SkBlurStyle,
SkBlurMask::ConvertRadiusToSigma(0.5),
SkBlurMaskFilter::kHighQuality_BlurFlag));
paint->setColorFilter(SkColorFilter::MakeModeFilter(SK_ColorLTGRAY,
SkBlendMode::kSrcIn));
paint->setColor(SK_ColorGRAY);
}
{
SkLayerDrawLooper::LayerInfo info;
looperBuilder.addLayerOnTop(info);
}
SkPaint dullPaint;
dullPaint.setAntiAlias(true);
SkPaint loopedPaint;
loopedPaint.setLooper(looperBuilder.detach());
loopedPaint.setAntiAlias(true);
loopedPaint.setColor(SK_ColorCYAN);
for (int i = 0; i < loops; i++) {
canvas->drawRect(fRRect.rect(), dullPaint);
canvas->drawRRect(fRRect, loopedPaint);
}
}
void onDraw(SkCanvas* canvas) override {
SkLayerDrawLooper::Builder looperBuilder;
{
SkLayerDrawLooper::LayerInfo info;
info.fPaintBits = SkLayerDrawLooper::kMaskFilter_Bit
| SkLayerDrawLooper::kColorFilter_Bit;
info.fColorMode = SkXfermode::kSrc_Mode;
info.fOffset = SkPoint::Make(SkIntToScalar(-1), SkIntToScalar(0));
info.fPostTranslate = false;
SkPaint* paint = looperBuilder.addLayerOnTop(info);
SkMaskFilter* maskFilter = SkBlurMaskFilter::Create(
kNormal_SkBlurStyle,
SkBlurMask::ConvertRadiusToSigma(SK_ScalarHalf),
SkBlurMaskFilter::kHighQuality_BlurFlag);
paint->setMaskFilter(maskFilter)->unref();
SkColorFilter* colorFilter = SkColorFilter::CreateModeFilter(
sk_tool_utils::color_to_565(SK_ColorLTGRAY),
SkXfermode::kSrcIn_Mode);
paint->setColorFilter(colorFilter)->unref();
paint->setColor(sk_tool_utils::color_to_565(SK_ColorGRAY));
}
{
SkLayerDrawLooper::LayerInfo info;
looperBuilder.addLayerOnTop(info);
}
SkPaint paint;
canvas->drawRect(fRRect.rect(), paint);
paint.setLooper(looperBuilder.detachLooper())->unref();
paint.setColor(SK_ColorCYAN);
paint.setAntiAlias(true);
canvas->drawRRect(fRRect, paint);
}
static void test_backToFront(skiatest::Reporter* reporter) {
SkLayerDrawLooper::Builder looperBuilder;
SkLayerDrawLooper::LayerInfo layerInfo;
// Add the back layer, with the defaults.
(void)looperBuilder.addLayerOnTop(layerInfo);
// Add the front layer, with some layer info set.
layerInfo.fOffset.set(10.0f, 20.0f);
layerInfo.fPaintBits |= SkLayerDrawLooper::kXfermode_Bit;
SkPaint* layerPaint = looperBuilder.addLayerOnTop(layerInfo);
layerPaint->setBlendMode(SkBlendMode::kSrc);
FakeDevice device;
SkCanvas canvas(&device);
SkPaint paint;
auto looper(looperBuilder.detach());
SkArenaAlloc alloc{48};
SkDrawLooper::Context* context = looper->makeContext(&canvas, &alloc);
// The back layer should come first.
REPORTER_ASSERT(reporter, context->next(&canvas, &paint));
REPORTER_ASSERT(reporter, paint.getBlendMode() == SkBlendMode::kSrcOver);
canvas.drawRect(SkRect::MakeWH(50.0f, 50.0f), paint);
REPORTER_ASSERT(reporter, 0.0f == device.fLastMatrix.getTranslateX());
REPORTER_ASSERT(reporter, 0.0f == device.fLastMatrix.getTranslateY());
paint.reset();
// Then the front layer.
REPORTER_ASSERT(reporter, context->next(&canvas, &paint));
REPORTER_ASSERT(reporter, paint.getBlendMode() == SkBlendMode::kSrc);
canvas.drawRect(SkRect::MakeWH(50.0f, 50.0f), paint);
REPORTER_ASSERT(reporter, 10.0f == device.fLastMatrix.getTranslateX());
REPORTER_ASSERT(reporter, 20.0f == device.fLastMatrix.getTranslateY());
// Only two layers were added, so that should be the end.
REPORTER_ASSERT(reporter, !context->next(&canvas, &paint));
}