Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 252 insertions, 0 deletions

diff --git a/gfx/2d/DrawTargetCairo.h b/gfx/2d/DrawTargetCairo.h
new file mode 100644
index 0000000000..8de89f9397
--- /dev/null
+++ b/gfx/2d/DrawTargetCairo.h
@@ -0,0 +1,252 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef _MOZILLA_GFX_DRAWTARGET_CAIRO_H_
+#define _MOZILLA_GFX_DRAWTARGET_CAIRO_H_
+
+#include "2D.h"
+#include "cairo.h"
+#include "PathCairo.h"
+
+#include <vector>
+
+namespace mozilla {
+namespace gfx {
+
+class SourceSurfaceCairo;
+
+class GradientStopsCairo : public GradientStops {
+ public:
+  MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(GradientStopsCairo, override)
+
+  GradientStopsCairo(GradientStop* aStops, uint32_t aNumStops,
+                     ExtendMode aExtendMode)
+      : mExtendMode(aExtendMode) {
+    for (uint32_t i = 0; i < aNumStops; ++i) {
+      mStops.push_back(aStops[i]);
+    }
+  }
+
+  virtual ~GradientStopsCairo() = default;
+
+  const std::vector<GradientStop>& GetStops() const { return mStops; }
+
+  ExtendMode GetExtendMode() const { return mExtendMode; }
+
+  virtual BackendType GetBackendType() const override {
+    return BackendType::CAIRO;
+  }
+
+ private:
+  std::vector<GradientStop> mStops;
+  ExtendMode mExtendMode;
+};
+
+class DrawTargetCairo final : public DrawTarget {
+ public:
+  MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(DrawTargetCairo, override)
+  friend class BorrowedXlibDrawable;
+
+  DrawTargetCairo();
+  virtual ~DrawTargetCairo();
+
+  virtual bool IsValid() const override;
+  virtual DrawTargetType GetType() const override;
+  virtual BackendType GetBackendType() const override {
+    return BackendType::CAIRO;
+  }
+
+  virtual void Link(const char* aDestination, const Rect& aRect) override;
+  virtual void Destination(const char* aDestination,
+                           const Point& aPoint) override;
+
+  virtual already_AddRefed<SourceSurface> Snapshot() override;
+  virtual IntSize GetSize() const override;
+
+  virtual bool IsCurrentGroupOpaque() override;
+
+  virtual void SetPermitSubpixelAA(bool aPermitSubpixelAA) override;
+
+  virtual bool LockBits(uint8_t** aData, IntSize* aSize, int32_t* aStride,
+                        SurfaceFormat* aFormat,
+                        IntPoint* aOrigin = nullptr) override;
+  virtual void ReleaseBits(uint8_t* aData) override;
+
+  virtual void Flush() override;
+  virtual void DrawSurface(
+      SourceSurface* aSurface, const Rect& aDest, const Rect& aSource,
+      const DrawSurfaceOptions& aSurfOptions = DrawSurfaceOptions(),
+      const DrawOptions& aOptions = DrawOptions()) override;
+  virtual void DrawFilter(FilterNode* aNode, const Rect& aSourceRect,
+                          const Point& aDestPoint,
+                          const DrawOptions& aOptions = DrawOptions()) override;
+  virtual void DrawSurfaceWithShadow(SourceSurface* aSurface,
+                                     const Point& aDest,
+                                     const ShadowOptions& aShadow,
+                                     CompositionOp aOperator) override;
+
+  virtual void ClearRect(const Rect& aRect) override;
+
+  virtual void CopySurface(SourceSurface* aSurface, const IntRect& aSourceRect,
+                           const IntPoint& aDestination) override;
+  virtual void CopyRect(const IntRect& aSourceRect,
+                        const IntPoint& aDestination) override;
+
+  virtual void FillRect(const Rect& aRect, const Pattern& aPattern,
+                        const DrawOptions& aOptions = DrawOptions()) override;
+  virtual void StrokeRect(const Rect& aRect, const Pattern& aPattern,
+                          const StrokeOptions& aStrokeOptions = StrokeOptions(),
+                          const DrawOptions& aOptions = DrawOptions()) override;
+  virtual void StrokeLine(const Point& aStart, const Point& aEnd,
+                          const Pattern& aPattern,
+                          const StrokeOptions& aStrokeOptions = StrokeOptions(),
+                          const DrawOptions& aOptions = DrawOptions()) override;
+
+  virtual void Stroke(const Path* aPath, const Pattern& aPattern,
+                      const StrokeOptions& aStrokeOptions = StrokeOptions(),
+                      const DrawOptions& aOptions = DrawOptions()) override;
+
+  virtual void Fill(const Path* aPath, const Pattern& aPattern,
+                    const DrawOptions& aOptions = DrawOptions()) override;
+
+  virtual void FillGlyphs(ScaledFont* aFont, const GlyphBuffer& aBuffer,
+                          const Pattern& aPattern,
+                          const DrawOptions& aOptions) override;
+  virtual void Mask(const Pattern& aSource, const Pattern& aMask,
+                    const DrawOptions& aOptions = DrawOptions()) override;
+  virtual void MaskSurface(
+      const Pattern& aSource, SourceSurface* aMask, Point aOffset,
+      const DrawOptions& aOptions = DrawOptions()) override;
+
+  virtual bool Draw3DTransformedSurface(SourceSurface* aSurface,
+                                        const Matrix4x4& aMatrix) override;
+
+  virtual void PushClip(const Path* aPath) override;
+  virtual void PushClipRect(const Rect& aRect) override;
+  virtual void PopClip() override;
+  virtual void PushLayer(bool aOpaque, Float aOpacity, SourceSurface* aMask,
+                         const Matrix& aMaskTransform,
+                         const IntRect& aBounds = IntRect(),
+                         bool aCopyBackground = false) override;
+  virtual void PushLayerWithBlend(
+      bool aOpaque, Float aOpacity, SourceSurface* aMask,
+      const Matrix& aMaskTransform, const IntRect& aBounds = IntRect(),
+      bool aCopyBackground = false,
+      CompositionOp = CompositionOp::OP_OVER) override;
+  virtual void PopLayer() override;
+
+  virtual already_AddRefed<PathBuilder> CreatePathBuilder(
+      FillRule aFillRule = FillRule::FILL_WINDING) const override {
+    return PathBuilderCairo::Create(aFillRule);
+  }
+
+  virtual already_AddRefed<SourceSurface> CreateSourceSurfaceFromData(
+      unsigned char* aData, const IntSize& aSize, int32_t aStride,
+      SurfaceFormat aFormat) const override;
+  virtual already_AddRefed<SourceSurface> OptimizeSourceSurface(
+      SourceSurface* aSurface) const override;
+  virtual already_AddRefed<SourceSurface> CreateSourceSurfaceFromNativeSurface(
+      const NativeSurface& aSurface) const override;
+  virtual already_AddRefed<DrawTarget> CreateSimilarDrawTarget(
+      const IntSize& aSize, SurfaceFormat aFormat) const override;
+  virtual already_AddRefed<DrawTarget> CreateShadowDrawTarget(
+      const IntSize& aSize, SurfaceFormat aFormat, float aSigma) const override;
+  virtual RefPtr<DrawTarget> CreateClippedDrawTarget(
+      const Rect& aBounds, SurfaceFormat aFormat) override;
+
+  virtual already_AddRefed<GradientStops> CreateGradientStops(
+      GradientStop* aStops, uint32_t aNumStops,
+      ExtendMode aExtendMode = ExtendMode::CLAMP) const override;
+
+  virtual already_AddRefed<FilterNode> CreateFilter(FilterType aType) override;
+
+  virtual void* GetNativeSurface(NativeSurfaceType aType) override;
+
+  bool Init(cairo_surface_t* aSurface, const IntSize& aSize,
+            SurfaceFormat* aFormat = nullptr);
+  bool Init(const IntSize& aSize, SurfaceFormat aFormat);
+  bool Init(unsigned char* aData, const IntSize& aSize, int32_t aStride,
+            SurfaceFormat aFormat);
+
+  virtual void SetTransform(const Matrix& aTransform) override;
+
+  virtual void DetachAllSnapshots() override { MarkSnapshotIndependent(); }
+
+  // Call to set up aContext for drawing (with the current transform, etc).
+  // Pass the path you're going to be using if you have one.
+  // Implicitly calls WillChange(aPath).
+  void PrepareForDrawing(cairo_t* aContext, const Path* aPath = nullptr);
+
+  static cairo_surface_t* GetDummySurface();
+
+  // Cairo hardcodes this as its maximum surface size.
+  static size_t GetMaxSurfaceSize() { return 32766; }
+
+ private:  // methods
+  // Init cairo surface without doing a cairo_surface_reference() call.
+  bool InitAlreadyReferenced(cairo_surface_t* aSurface, const IntSize& aSize,
+                             SurfaceFormat* aFormat = nullptr);
+  enum DrawPatternType { DRAW_FILL, DRAW_STROKE };
+  void DrawPattern(const Pattern& aPattern, const StrokeOptions& aStrokeOptions,
+                   const DrawOptions& aOptions, DrawPatternType aDrawType,
+                   bool aPathBoundsClip = false);
+
+  void CopySurfaceInternal(cairo_surface_t* aSurface, const IntRect& aSource,
+                           const IntPoint& aDest);
+
+  Rect GetUserSpaceClip() const;
+
+  // Call before you make any changes to the backing surface with which this
+  // context is associated. Pass the path you're going to be using if you have
+  // one.
+  void WillChange(const Path* aPath = nullptr);
+
+  // Call if there is any reason to disassociate the snapshot from this draw
+  // target; for example, because we're going to be destroyed.
+  void MarkSnapshotIndependent();
+
+  // If the current operator is "source" then clear the destination before we
+  // draw into it, to simulate the effect of an unbounded source operator.
+  void ClearSurfaceForUnboundedSource(const CompositionOp& aOperator);
+
+  // Set the Cairo context font options according to the current draw target
+  // font state.
+  void SetFontOptions(cairo_antialias_t aAAMode = CAIRO_ANTIALIAS_DEFAULT);
+
+ private:  // data
+  cairo_t* mContext;
+  cairo_surface_t* mSurface;
+  IntSize mSize;
+  bool mTransformSingular;
+
+  uint8_t* mLockedBits;
+
+  cairo_font_options_t* mFontOptions;
+
+  struct PushedLayer {
+    PushedLayer(Float aOpacity, CompositionOp aCompositionOp,
+                bool aWasPermittingSubpixelAA)
+        : mOpacity(aOpacity),
+          mCompositionOp(aCompositionOp),
+          mMaskPattern(nullptr),
+          mWasPermittingSubpixelAA(aWasPermittingSubpixelAA) {}
+    Float mOpacity;
+    CompositionOp mCompositionOp;
+    cairo_pattern_t* mMaskPattern;
+    bool mWasPermittingSubpixelAA;
+  };
+  std::vector<PushedLayer> mPushedLayers;
+
+  // The latest snapshot of this surface. This needs to be told when this
+  // target is modified. We keep it alive as a cache.
+  RefPtr<SourceSurfaceCairo> mSnapshot;
+  static cairo_surface_t* mDummySurface;
+};
+
+}  // namespace gfx
+}  // namespace mozilla
+
+#endif  // _MOZILLA_GFX_DRAWTARGET_CAIRO_H_