示例#1
0
    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);
        }
    }
示例#2
0
    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));
}