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/*
* Copyright (C) 2024, 2025 Igalia S.L.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#if USE(SKIA)
#include "GLFence.h"
#include "GraphicsContext.h"
WTF_IGNORE_WARNINGS_IN_THIRD_PARTY_CODE_BEGIN
#include <skia/core/SkCanvas.h>
#include <skia/core/SkImage.h>
#include <skia/effects/SkDashPathEffect.h>
WTF_IGNORE_WARNINGS_IN_THIRD_PARTY_CODE_END
#include <wtf/CompletionHandler.h>
#include <wtf/HashMap.h>
class SkSurface;
namespace WebCore {
using SkiaImageToFenceMap = HashMap<const SkImage*, std::unique_ptr<GLFence>>;
class WEBCORE_EXPORT GraphicsContextSkia final : public GraphicsContext {
public:
GraphicsContextSkia(SkCanvas&, RenderingMode, RenderingPurpose, CompletionHandler<void()>&& = nullptr);
virtual ~GraphicsContextSkia();
bool hasPlatformContext() const final;
SkCanvas* platformContext() const final;
const DestinationColorSpace& colorSpace() const final;
void beginRecording();
SkiaImageToFenceMap endRecording();
void didUpdateState(GraphicsContextState&);
void setLineCap(LineCap) final;
void setLineDash(const DashArray&, float) final;
void setLineJoin(LineJoin) final;
void setMiterLimit(float) final;
using GraphicsContext::fillRect;
void fillRect(const FloatRect&, RequiresClipToRect = RequiresClipToRect::Yes) final;
void fillRect(const FloatRect&, const Color&) final;
void fillRect(const FloatRect&, Gradient&, const AffineTransform&, RequiresClipToRect = RequiresClipToRect::Yes) final;
void fillRoundedRectImpl(const FloatRoundedRect&, const Color&) final;
void fillRectWithRoundedHole(const FloatRect&, const FloatRoundedRect&, const Color&) final;
void fillPath(const Path&) final;
void strokeRect(const FloatRect&, float) final;
void strokePath(const Path&) final;
void clearRect(const FloatRect&) final;
void drawNativeImageInternal(NativeImage&, const FloatRect&, const FloatRect&, ImagePaintingOptions) final;
void drawPattern(NativeImage&, const FloatRect& destRect, const FloatRect& srcRect, const AffineTransform&, const FloatPoint& phase, const FloatSize& spacing, ImagePaintingOptions) final;
void drawRect(const FloatRect&, float) final;
void drawLine(const FloatPoint&, const FloatPoint&) final;
void drawLinesForText(const FloatPoint&, float thickness, std::span<const FloatSegment>, bool isPrinting, bool doubleLines, StrokeStyle) final;
void drawDotsForDocumentMarker(const FloatRect&, DocumentMarkerLineStyle) final;
void drawEllipse(const FloatRect&) final;
void drawFocusRing(const Path&, float outlineWidth, const Color&) final;
void drawFocusRing(const Vector<FloatRect>&, float outlineOffset, float outlineWidth, const Color&) final;
void save(GraphicsContextState::Purpose = GraphicsContextState::Purpose::SaveRestore) final;
void restore(GraphicsContextState::Purpose = GraphicsContextState::Purpose::SaveRestore) final;
void translate(float, float) final;
void rotate(float) final;
using GraphicsContext::scale;
void scale(const FloatSize&) final;
void concatCTM(const AffineTransform&) final;
void setCTM(const AffineTransform&) final;
AffineTransform getCTM(GraphicsContext::IncludeDeviceScale) const final;
void beginTransparencyLayer(float) final;
void beginTransparencyLayer(CompositeOperator, BlendMode) final;
void endTransparencyLayer() final;
void resetClip() final;
void clip(const FloatRect&) final;
void clipOut(const FloatRect&) final;
void clipOut(const Path&) final;
void clipPath(const Path&, WindRule) final;
IntRect clipBounds() const final;
void clipToImageBuffer(ImageBuffer&, const FloatRect&) final;
RenderingMode renderingMode() const final;
SkPaint createFillPaint() const;
SkPaint createStrokePaint() const;
void drawSkiaText(const sk_sp<SkTextBlob>&, SkScalar, SkScalar, bool, bool);
static std::unique_ptr<GLFence> createAcceleratedRenderingFenceIfNeeded(SkSurface*);
static std::unique_ptr<GLFence> createAcceleratedRenderingFenceIfNeeded(const sk_sp<SkImage>&);
private:
enum class ContextMode : bool {
PaintingMode,
RecordingMode
};
bool makeGLContextCurrentIfNeeded() const;
void trackAcceleratedRenderingFenceIfNeeded(const sk_sp<SkImage>&);
void trackAcceleratedRenderingFenceIfNeeded(SkPaint&);
void setupFillSource(SkPaint&);
void setupStrokeSource(SkPaint&);
enum class ShadowStyle : uint8_t { Outset, Inset };
sk_sp<SkImageFilter> createDropShadowFilterIfNeeded(ShadowStyle) const;
bool drawOutsetShadow(SkPaint&, Function<void(const SkPaint&)>&&);
void drawSkiaRect(const SkRect&, SkPaint&);
void drawSkiaPath(const SkPath&, SkPaint&);
class SkiaState {
public:
SkiaState() = default;
struct {
SkScalar miter { SkFloatToScalar(4) };
SkPaint::Cap cap { SkPaint::kButt_Cap };
SkPaint::Join join { SkPaint::kMiter_Join };
sk_sp<SkPathEffect> dash;
} m_stroke;
};
struct LayerState {
std::optional<CompositeMode> compositeMode;
};
SkCanvas& m_canvas;
ContextMode m_contextMode { ContextMode::PaintingMode };
RenderingMode m_renderingMode { RenderingMode::Accelerated };
RenderingPurpose m_renderingPurpose { RenderingPurpose::Unspecified };
CompletionHandler<void()> m_destroyNotify;
SkiaState m_skiaState;
Vector<SkiaState, 1> m_skiaStateStack;
Vector<LayerState, 1> m_layerStateStack;
SkiaImageToFenceMap m_imageToFenceMap;
const DestinationColorSpace m_colorSpace;
};
} // namespace WebCore
#endif // USE(SKIA)
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