PassRefPtr<PictureSnapshot> PictureSnapshot::load(const Vector<RefPtr<TilePictureStream>>& tiles)
{
ASSERT(!tiles.isEmpty());
Vector<sk_sp<SkPicture>> pictures;
pictures.reserveCapacity(tiles.size());
FloatRect unionRect;
for (const auto& tileStream : tiles) {
SkMemoryStream stream(tileStream->data.begin(), tileStream->data.size());
sk_sp<SkPicture> picture = SkPicture::MakeFromStream(&stream, decodeBitmap);
if (!picture)
return nullptr;
FloatRect cullRect(picture->cullRect());
cullRect.moveBy(tileStream->layerOffset);
unionRect.unite(cullRect);
pictures.append(std::move(picture));
}
if (tiles.size() == 1)
return adoptRef(new PictureSnapshot(fromSkSp(std::move(pictures[0]))));
SkPictureRecorder recorder;
SkCanvas* canvas = recorder.beginRecording(unionRect.width(), unionRect.height(), 0, 0);
for (size_t i = 0; i < pictures.size(); ++i) {
canvas->save();
canvas->translate(tiles[i]->layerOffset.x() - unionRect.x(), tiles[i]->layerOffset.y() - unionRect.y());
pictures[i]->playback(canvas, 0);
canvas->restore();
}
return adoptRef(new PictureSnapshot(fromSkSp(recorder.finishRecordingAsPicture())));
}
PassRefPtr<SkImageFilter> FEBlend::createImageFilter(SkiaImageFilterBuilder& builder)
{
RefPtr<SkImageFilter> foreground(builder.build(inputEffect(0), operatingColorSpace()));
RefPtr<SkImageFilter> background(builder.build(inputEffect(1), operatingColorSpace()));
sk_sp<SkXfermode> mode(SkXfermode::Make(WebCoreCompositeToSkiaComposite(CompositeSourceOver, m_mode)));
SkImageFilter::CropRect cropRect = getCropRect();
return fromSkSp(SkXfermodeImageFilter::Make(std::move(mode), background.get(), foreground.get(), &cropRect));
}
PassRefPtr<SkColorFilter> createColorSpaceFilter(ColorSpace srcColorSpace, ColorSpace dstColorSpace)
{
const uint8_t* lookupTable = getConversionLUT(dstColorSpace, srcColorSpace);
if (!lookupTable)
return nullptr;
return fromSkSp(SkTableColorFilter::MakeARGB(0, lookupTable, lookupTable, lookupTable));
}
PassRefPtr<SkPicture> TestPaintArtifact::DummyRectClient::makePicture() const
{
SkPictureRecorder recorder;
SkCanvas* canvas = recorder.beginRecording(m_rect);
SkPaint paint;
paint.setColor(m_color.rgb());
canvas->drawRect(m_rect, paint);
return fromSkSp(recorder.finishRecordingAsPicture());
}
std::unique_ptr<Vector<char>> PictureSnapshot::replay(unsigned fromStep, unsigned toStep, double scale) const
{
const SkIRect bounds = m_picture->cullRect().roundOut();
// TODO(fmalita): convert this to SkSurface/SkImage, drop the intermediate SkBitmap.
SkBitmap bitmap;
bitmap.allocPixels(SkImageInfo::MakeN32Premul(bounds.width(), bounds.height()));
bitmap.eraseARGB(0, 0, 0, 0);
{
ReplayingCanvas canvas(bitmap, fromStep, toStep);
// Disable LCD text preemptively, because the picture opacity is unknown.
// The canonical API involves SkSurface props, but since we're not SkSurface-based
// at this point (see TODO above) we (ab)use saveLayer for this purpose.
SkAutoCanvasRestore autoRestore(&canvas, false);
canvas.saveLayer(nullptr, nullptr);
canvas.scale(scale, scale);
canvas.resetStepCount();
m_picture->playback(&canvas, &canvas);
}
std::unique_ptr<Vector<char>> base64Data = wrapUnique(new Vector<char>());
Vector<char> encodedImage;
RefPtr<SkImage> image = fromSkSp(SkImage::MakeFromBitmap(bitmap));
if (!image)
return nullptr;
ImagePixelLocker pixelLocker(image, kUnpremul_SkAlphaType, kRGBA_8888_SkColorType);
ImageDataBuffer imageData(IntSize(image->width(), image->height()),
static_cast<const unsigned char*>(pixelLocker.pixels()));
if (!PNGImageEncoder::encode(imageData, reinterpret_cast<Vector<unsigned char>*>(&encodedImage)))
return nullptr;
base64Encode(encodedImage, *base64Data);
return base64Data;
}
PassRefPtr<SkImage> UnacceleratedImageBufferSurface::newImageSnapshot(AccelerationHint, SnapshotReason)
{
return fromSkSp(m_surface->makeImageSnapshot());
}
SkShader* Gradient::shader()
{
if (m_gradient)
return m_gradient.get();
sortStopsIfNecessary();
ASSERT(m_stopsSorted);
size_t countUsed = totalStopsNeeded(m_stops.data(), m_stops.size());
ASSERT(countUsed >= 2);
ASSERT(countUsed >= m_stops.size());
ColorStopOffsetVector pos(countUsed);
ColorStopColorVector colors(countUsed);
fillStops(m_stops.data(), m_stops.size(), pos, colors);
SkShader::TileMode tile = SkShader::kClamp_TileMode;
switch (m_spreadMethod) {
case SpreadMethodReflect:
tile = SkShader::kMirror_TileMode;
break;
case SpreadMethodRepeat:
tile = SkShader::kRepeat_TileMode;
break;
case SpreadMethodPad:
tile = SkShader::kClamp_TileMode;
break;
}
uint32_t shouldDrawInPMColorSpace = m_drawInPMColorSpace ? SkGradientShader::kInterpolateColorsInPremul_Flag : 0;
if (m_radial) {
if (aspectRatio() != 1) {
// CSS3 elliptical gradients: apply the elliptical scaling at the
// gradient center point.
m_gradientSpaceTransformation.translate(m_p0.x(), m_p0.y());
m_gradientSpaceTransformation.scale(1, 1 / aspectRatio());
m_gradientSpaceTransformation.translate(-m_p0.x(), -m_p0.y());
ASSERT(m_p0 == m_p1);
}
SkMatrix localMatrix = affineTransformToSkMatrix(m_gradientSpaceTransformation);
// Since the two-point radial gradient is slower than the plain radial,
// only use it if we have to.
if (m_p0 == m_p1 && m_r0 <= 0.0f) {
m_gradient = fromSkSp(SkGradientShader::MakeRadial(m_p1.data(), m_r1, colors.data(), pos.data(), static_cast<int>(countUsed), tile, shouldDrawInPMColorSpace, &localMatrix));
} else {
// The radii we give to Skia must be positive. If we're given a
// negative radius, ask for zero instead.
SkScalar radius0 = m_r0 >= 0.0f ? WebCoreFloatToSkScalar(m_r0) : 0;
SkScalar radius1 = m_r1 >= 0.0f ? WebCoreFloatToSkScalar(m_r1) : 0;
m_gradient = fromSkSp(SkGradientShader::MakeTwoPointConical(m_p0.data(), radius0, m_p1.data(), radius1, colors.data(), pos.data(), static_cast<int>(countUsed), tile, shouldDrawInPMColorSpace, &localMatrix));
}
} else {
SkPoint pts[2] = { m_p0.data(), m_p1.data() };
SkMatrix localMatrix = affineTransformToSkMatrix(m_gradientSpaceTransformation);
m_gradient = fromSkSp(SkGradientShader::MakeLinear(pts, colors.data(), pos.data(), static_cast<int>(countUsed), tile, shouldDrawInPMColorSpace, &localMatrix));
}
if (!m_gradient) {
// use last color, since our "geometry" was degenerate (e.g. radius==0)
m_gradient = fromSkSp(SkShader::MakeColorShader(colors[countUsed - 1]));
}
return m_gradient.get();
}
