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109 lines
4.6 KiB
C++
109 lines
4.6 KiB
C++
/*
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* Copyright (c) 2024, Lucien Fiorini <lucienfiorini@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/Assertions.h>
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#include <LibGfx/Filter.h>
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#include <LibGfx/FilterImpl.h>
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#include <LibGfx/SkiaUtils.h>
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#include <core/SkBlender.h>
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#include <core/SkImageFilter.h>
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#include <core/SkString.h>
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#include <effects/SkRuntimeEffect.h>
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namespace Gfx {
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SkPath to_skia_path(Path const& path)
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{
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return static_cast<PathImplSkia const&>(path.impl()).sk_path();
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}
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sk_sp<SkImageFilter> to_skia_image_filter(Gfx::Filter const& filter)
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{
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return filter.impl().filter;
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}
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sk_sp<SkBlender> to_skia_blender(Gfx::CompositingAndBlendingOperator compositing_and_blending_operator)
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{
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switch (compositing_and_blending_operator) {
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case CompositingAndBlendingOperator::Normal:
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return SkBlender::Mode(SkBlendMode::kSrcOver);
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case CompositingAndBlendingOperator::Multiply:
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return SkBlender::Mode(SkBlendMode::kMultiply);
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case CompositingAndBlendingOperator::Screen:
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return SkBlender::Mode(SkBlendMode::kScreen);
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case CompositingAndBlendingOperator::Overlay:
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return SkBlender::Mode(SkBlendMode::kOverlay);
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case CompositingAndBlendingOperator::Darken:
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return SkBlender::Mode(SkBlendMode::kDarken);
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case CompositingAndBlendingOperator::Lighten:
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return SkBlender::Mode(SkBlendMode::kLighten);
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case CompositingAndBlendingOperator::ColorDodge:
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return SkBlender::Mode(SkBlendMode::kColorDodge);
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case CompositingAndBlendingOperator::ColorBurn:
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return SkBlender::Mode(SkBlendMode::kColorBurn);
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case CompositingAndBlendingOperator::HardLight:
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return SkBlender::Mode(SkBlendMode::kHardLight);
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case CompositingAndBlendingOperator::SoftLight:
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return SkBlender::Mode(SkBlendMode::kSoftLight);
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case CompositingAndBlendingOperator::Difference:
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return SkBlender::Mode(SkBlendMode::kDifference);
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case CompositingAndBlendingOperator::Exclusion:
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return SkBlender::Mode(SkBlendMode::kExclusion);
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case CompositingAndBlendingOperator::Hue:
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return SkBlender::Mode(SkBlendMode::kHue);
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case CompositingAndBlendingOperator::Saturation:
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return SkBlender::Mode(SkBlendMode::kSaturation);
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case CompositingAndBlendingOperator::Color:
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return SkBlender::Mode(SkBlendMode::kColor);
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case CompositingAndBlendingOperator::Luminosity:
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return SkBlender::Mode(SkBlendMode::kLuminosity);
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case CompositingAndBlendingOperator::Clear:
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return SkBlender::Mode(SkBlendMode::kClear);
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case CompositingAndBlendingOperator::Copy:
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return SkBlender::Mode(SkBlendMode::kSrc);
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case CompositingAndBlendingOperator::SourceOver:
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return SkBlender::Mode(SkBlendMode::kSrcOver);
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case CompositingAndBlendingOperator::DestinationOver:
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return SkBlender::Mode(SkBlendMode::kDstOver);
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case CompositingAndBlendingOperator::SourceIn:
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return SkBlender::Mode(SkBlendMode::kSrcIn);
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case CompositingAndBlendingOperator::DestinationIn:
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return SkBlender::Mode(SkBlendMode::kDstIn);
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case CompositingAndBlendingOperator::SourceOut:
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return SkBlender::Mode(SkBlendMode::kSrcOut);
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case CompositingAndBlendingOperator::DestinationOut:
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return SkBlender::Mode(SkBlendMode::kDstOut);
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case CompositingAndBlendingOperator::SourceATop:
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return SkBlender::Mode(SkBlendMode::kSrcATop);
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case CompositingAndBlendingOperator::DestinationATop:
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return SkBlender::Mode(SkBlendMode::kDstATop);
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case CompositingAndBlendingOperator::Xor:
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return SkBlender::Mode(SkBlendMode::kXor);
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case CompositingAndBlendingOperator::Lighter:
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return SkBlender::Mode(SkBlendMode::kPlus);
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case CompositingAndBlendingOperator::PlusDarker:
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// https://drafts.fxtf.org/compositing/#porterduffcompositingoperators_plus_darker
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// FIXME: This does not match the spec, however it looks like Safari, the only popular browser supporting this operator.
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return SkRuntimeEffect::MakeForBlender(SkString(R"(
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vec4 main(vec4 source, vec4 destination) {
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return saturate(saturate(destination.a + source.a) - saturate(destination.a - destination) - saturate(source.a - source));
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}
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)"))
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.effect->makeBlender(nullptr);
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case CompositingAndBlendingOperator::PlusLighter:
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// https://drafts.fxtf.org/compositing/#porterduffcompositingoperators_plus_lighter
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return SkRuntimeEffect::MakeForBlender(SkString(R"(
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vec4 main(vec4 source, vec4 destination) {
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return saturate(source + destination);
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}
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)"))
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.effect->makeBlender(nullptr);
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default:
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VERIFY_NOT_REACHED();
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}
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}
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}
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