Add m-esr52 at 52.6.0

1 files changed, 594 insertions, 0 deletions

diff --git a/gfx/2d/DrawCommand.h b/gfx/2d/DrawCommand.h
new file mode 100644
index 000000000..eb415c70a
--- /dev/null
+++ b/gfx/2d/DrawCommand.h
@@ -0,0 +1,594 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * 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_DRAWCOMMAND_H_
+#define MOZILLA_GFX_DRAWCOMMAND_H_
+
+#include <math.h>
+
+#include "2D.h"
+#include "Filters.h"
+#include <vector>
+
+namespace mozilla {
+namespace gfx {
+
+enum class CommandType : int8_t {
+  DRAWSURFACE = 0,
+  DRAWFILTER,
+  DRAWSURFACEWITHSHADOW,
+  CLEARRECT,
+  COPYSURFACE,
+  COPYRECT,
+  FILLRECT,
+  STROKERECT,
+  STROKELINE,
+  STROKE,
+  FILL,
+  FILLGLYPHS,
+  MASK,
+  MASKSURFACE,
+  PUSHCLIP,
+  PUSHCLIPRECT,
+  POPCLIP,
+  SETTRANSFORM,
+  FLUSH
+};
+
+class DrawingCommand
+{
+public:
+  virtual ~DrawingCommand() {}
+
+  virtual void ExecuteOnDT(DrawTarget* aDT, const Matrix* aTransform = nullptr) const = 0;
+
+  virtual bool GetAffectedRect(Rect& aDeviceRect, const Matrix& aTransform) const { return false; }
+
+protected:
+  explicit DrawingCommand(CommandType aType)
+    : mType(aType)
+  {
+  }
+
+  CommandType GetType() { return mType; }
+
+private:
+  CommandType mType;
+};
+
+class StoredPattern
+{
+public:
+  explicit StoredPattern(const Pattern& aPattern)
+  {
+    Assign(aPattern);
+  }
+
+  void Assign(const Pattern& aPattern)
+  {
+    switch (aPattern.GetType()) {
+    case PatternType::COLOR:
+      new (mColor)ColorPattern(*static_cast<const ColorPattern*>(&aPattern));
+      return;
+    case PatternType::SURFACE:
+    {
+      SurfacePattern* surfPat = new (mSurface)SurfacePattern(*static_cast<const SurfacePattern*>(&aPattern));
+      surfPat->mSurface->GuaranteePersistance();
+      return;
+    }
+    case PatternType::LINEAR_GRADIENT:
+      new (mLinear)LinearGradientPattern(*static_cast<const LinearGradientPattern*>(&aPattern));
+      return;
+    case PatternType::RADIAL_GRADIENT:
+      new (mRadial)RadialGradientPattern(*static_cast<const RadialGradientPattern*>(&aPattern));
+      return;
+    }
+  }
+
+  ~StoredPattern()
+  {
+    reinterpret_cast<Pattern*>(mPattern)->~Pattern();
+  }
+
+  operator Pattern&()
+  {
+    return *reinterpret_cast<Pattern*>(mPattern);
+  }
+
+  operator const Pattern&() const
+  {
+    return *reinterpret_cast<const Pattern*>(mPattern);
+  }
+
+  StoredPattern(const StoredPattern& aPattern)
+  {
+    Assign(aPattern);
+  }
+
+private:
+  StoredPattern operator=(const StoredPattern& aOther)
+  {
+    // Block this so that we notice if someone's doing excessive assigning.
+    return *this;
+  }
+
+  union {
+    char mPattern[sizeof(Pattern)];
+    char mColor[sizeof(ColorPattern)];
+    char mLinear[sizeof(LinearGradientPattern)];
+    char mRadial[sizeof(RadialGradientPattern)];
+    char mSurface[sizeof(SurfacePattern)];
+  };
+};
+
+class DrawSurfaceCommand : public DrawingCommand
+{
+public:
+  DrawSurfaceCommand(SourceSurface *aSurface, const Rect& aDest,
+                     const Rect& aSource, const DrawSurfaceOptions& aSurfOptions,
+                     const DrawOptions& aOptions)
+    : DrawingCommand(CommandType::DRAWSURFACE)
+    , mSurface(aSurface), mDest(aDest)
+    , mSource(aSource), mSurfOptions(aSurfOptions)
+    , mOptions(aOptions)
+  {
+  }
+
+  virtual void ExecuteOnDT(DrawTarget* aDT, const Matrix*) const
+  {
+    aDT->DrawSurface(mSurface, mDest, mSource, mSurfOptions, mOptions);
+  }
+
+private:
+  RefPtr<SourceSurface> mSurface;
+  Rect mDest;
+  Rect mSource;
+  DrawSurfaceOptions mSurfOptions;
+  DrawOptions mOptions;
+};
+
+class DrawFilterCommand : public DrawingCommand
+{
+public:
+  DrawFilterCommand(FilterNode* aFilter, const Rect& aSourceRect,
+                    const Point& aDestPoint, const DrawOptions& aOptions)
+    : DrawingCommand(CommandType::DRAWSURFACE)
+    , mFilter(aFilter), mSourceRect(aSourceRect)
+    , mDestPoint(aDestPoint), mOptions(aOptions)
+  {
+  }
+
+  virtual void ExecuteOnDT(DrawTarget* aDT, const Matrix*) const
+  {
+    aDT->DrawFilter(mFilter, mSourceRect, mDestPoint, mOptions);
+  }
+
+private:
+  RefPtr<FilterNode> mFilter;
+  Rect mSourceRect;
+  Point mDestPoint;
+  DrawOptions mOptions;
+};
+
+class ClearRectCommand : public DrawingCommand
+{
+public:
+  explicit ClearRectCommand(const Rect& aRect)
+    : DrawingCommand(CommandType::CLEARRECT)
+    , mRect(aRect)
+  {
+  }
+
+  virtual void ExecuteOnDT(DrawTarget* aDT, const Matrix*) const
+  {
+    aDT->ClearRect(mRect);
+  }
+
+private:
+  Rect mRect;
+};
+
+class CopySurfaceCommand : public DrawingCommand
+{
+public:
+  CopySurfaceCommand(SourceSurface* aSurface,
+                     const IntRect& aSourceRect,
+                     const IntPoint& aDestination)
+    : DrawingCommand(CommandType::COPYSURFACE)
+    , mSurface(aSurface)
+    , mSourceRect(aSourceRect)
+    , mDestination(aDestination)
+  {
+  }
+
+  virtual void ExecuteOnDT(DrawTarget* aDT, const Matrix* aTransform) const
+  {
+    MOZ_ASSERT(!aTransform || !aTransform->HasNonIntegerTranslation());
+    Point dest(Float(mDestination.x), Float(mDestination.y));
+    if (aTransform) {
+      dest = aTransform->TransformPoint(dest);
+    }
+    aDT->CopySurface(mSurface, mSourceRect, IntPoint(uint32_t(dest.x), uint32_t(dest.y)));
+  }
+
+private:
+  RefPtr<SourceSurface> mSurface;
+  IntRect mSourceRect;
+  IntPoint mDestination;
+};
+
+class FillRectCommand : public DrawingCommand
+{
+public:
+  FillRectCommand(const Rect& aRect,
+                  const Pattern& aPattern,
+                  const DrawOptions& aOptions)
+    : DrawingCommand(CommandType::FILLRECT)
+    , mRect(aRect)
+    , mPattern(aPattern)
+    , mOptions(aOptions)
+  {
+  }
+
+  virtual void ExecuteOnDT(DrawTarget* aDT, const Matrix*) const
+  {
+    aDT->FillRect(mRect, mPattern, mOptions);
+  }
+
+  bool GetAffectedRect(Rect& aDeviceRect, const Matrix& aTransform) const
+  {
+    aDeviceRect = aTransform.TransformBounds(mRect);
+    return true;
+  }
+
+private:
+  Rect mRect;
+  StoredPattern mPattern;
+  DrawOptions mOptions;
+};
+
+class StrokeRectCommand : public DrawingCommand
+{
+public:
+  StrokeRectCommand(const Rect& aRect,
+                    const Pattern& aPattern,
+                    const StrokeOptions& aStrokeOptions,
+                    const DrawOptions& aOptions)
+    : DrawingCommand(CommandType::STROKERECT)
+    , mRect(aRect)
+    , mPattern(aPattern)
+    , mStrokeOptions(aStrokeOptions)
+    , mOptions(aOptions)
+  {
+    if (aStrokeOptions.mDashLength) {
+      mDashes.resize(aStrokeOptions.mDashLength);
+      mStrokeOptions.mDashPattern = &mDashes.front();
+      memcpy(&mDashes.front(), aStrokeOptions.mDashPattern, mStrokeOptions.mDashLength * sizeof(Float));
+    }
+  }
+
+  virtual void ExecuteOnDT(DrawTarget* aDT, const Matrix*) const
+  {
+    aDT->StrokeRect(mRect, mPattern, mStrokeOptions, mOptions);
+  }
+
+private:
+  Rect mRect;
+  StoredPattern mPattern;
+  StrokeOptions mStrokeOptions;
+  DrawOptions mOptions;
+  std::vector<Float> mDashes;
+};
+
+class StrokeLineCommand : public DrawingCommand
+{
+public:
+  StrokeLineCommand(const Point& aStart,
+                    const Point& aEnd,
+                    const Pattern& aPattern,
+                    const StrokeOptions& aStrokeOptions,
+                    const DrawOptions& aOptions)
+    : DrawingCommand(CommandType::STROKELINE)
+    , mStart(aStart)
+    , mEnd(aEnd)
+    , mPattern(aPattern)
+    , mStrokeOptions(aStrokeOptions)
+    , mOptions(aOptions)
+  {
+  }
+
+  virtual void ExecuteOnDT(DrawTarget* aDT, const Matrix*) const
+  {
+    aDT->StrokeLine(mStart, mEnd, mPattern, mStrokeOptions, mOptions);
+  }
+
+private:
+  Point mStart;
+  Point mEnd;
+  StoredPattern mPattern;
+  StrokeOptions mStrokeOptions;
+  DrawOptions mOptions;
+};
+
+class FillCommand : public DrawingCommand
+{
+public:
+  FillCommand(const Path* aPath,
+              const Pattern& aPattern,
+              const DrawOptions& aOptions)
+    : DrawingCommand(CommandType::FILL)
+    , mPath(const_cast<Path*>(aPath))
+    , mPattern(aPattern)
+    , mOptions(aOptions)
+  {
+  }
+
+  virtual void ExecuteOnDT(DrawTarget* aDT, const Matrix*) const
+  {
+    aDT->Fill(mPath, mPattern, mOptions);
+  }
+
+  bool GetAffectedRect(Rect& aDeviceRect, const Matrix& aTransform) const
+  {
+    aDeviceRect = mPath->GetBounds(aTransform);
+    return true;
+  }
+
+private:
+  RefPtr<Path> mPath;
+  StoredPattern mPattern;
+  DrawOptions mOptions;
+};
+
+#ifndef M_SQRT2
+#define M_SQRT2 1.41421356237309504880
+#endif
+
+#ifndef M_SQRT1_2
+#define M_SQRT1_2 0.707106781186547524400844362104849039
+#endif
+
+// The logic for this comes from _cairo_stroke_style_max_distance_from_path
+static Rect
+PathExtentsToMaxStrokeExtents(const StrokeOptions &aStrokeOptions,
+                              const Rect &aRect,
+                              const Matrix &aTransform)
+{
+  double styleExpansionFactor = 0.5f;
+
+  if (aStrokeOptions.mLineCap == CapStyle::SQUARE) {
+    styleExpansionFactor = M_SQRT1_2;
+  }
+
+  if (aStrokeOptions.mLineJoin == JoinStyle::MITER &&
+      styleExpansionFactor < M_SQRT2 * aStrokeOptions.mMiterLimit) {
+    styleExpansionFactor = M_SQRT2 * aStrokeOptions.mMiterLimit;
+  }
+
+  styleExpansionFactor *= aStrokeOptions.mLineWidth;
+
+  double dx = styleExpansionFactor * hypot(aTransform._11, aTransform._21);
+  double dy = styleExpansionFactor * hypot(aTransform._22, aTransform._12);
+
+  Rect result = aRect;
+  result.Inflate(dx, dy);
+  return result;
+}
+
+class StrokeCommand : public DrawingCommand
+{
+public:
+  StrokeCommand(const Path* aPath,
+                const Pattern& aPattern,
+                const StrokeOptions& aStrokeOptions,
+                const DrawOptions& aOptions)
+    : DrawingCommand(CommandType::STROKE)
+    , mPath(const_cast<Path*>(aPath))
+    , mPattern(aPattern)
+    , mStrokeOptions(aStrokeOptions)
+    , mOptions(aOptions)
+  {
+    if (aStrokeOptions.mDashLength) {
+      mDashes.resize(aStrokeOptions.mDashLength);
+      mStrokeOptions.mDashPattern = &mDashes.front();
+      memcpy(&mDashes.front(), aStrokeOptions.mDashPattern, mStrokeOptions.mDashLength * sizeof(Float));
+    }
+  }
+
+  virtual void ExecuteOnDT(DrawTarget* aDT, const Matrix*) const
+  {
+    aDT->Stroke(mPath, mPattern, mStrokeOptions, mOptions);
+  }
+
+  bool GetAffectedRect(Rect& aDeviceRect, const Matrix& aTransform) const
+  {
+    aDeviceRect = PathExtentsToMaxStrokeExtents(mStrokeOptions, mPath->GetBounds(aTransform), aTransform);
+    return true;
+  }
+
+private:
+  RefPtr<Path> mPath;
+  StoredPattern mPattern;
+  StrokeOptions mStrokeOptions;
+  DrawOptions mOptions;
+  std::vector<Float> mDashes;
+};
+
+class FillGlyphsCommand : public DrawingCommand
+{
+public:
+  FillGlyphsCommand(ScaledFont* aFont,
+                    const GlyphBuffer& aBuffer,
+                    const Pattern& aPattern,
+                    const DrawOptions& aOptions,
+                    const GlyphRenderingOptions* aRenderingOptions)
+    : DrawingCommand(CommandType::FILLGLYPHS)
+    , mFont(aFont)
+    , mPattern(aPattern)
+    , mOptions(aOptions)
+    , mRenderingOptions(const_cast<GlyphRenderingOptions*>(aRenderingOptions))
+  {
+    mGlyphs.resize(aBuffer.mNumGlyphs);
+    memcpy(&mGlyphs.front(), aBuffer.mGlyphs, sizeof(Glyph) * aBuffer.mNumGlyphs);
+  }
+
+  virtual void ExecuteOnDT(DrawTarget* aDT, const Matrix*) const
+  {
+    GlyphBuffer buf;
+    buf.mNumGlyphs = mGlyphs.size();
+    buf.mGlyphs = &mGlyphs.front();
+    aDT->FillGlyphs(mFont, buf, mPattern, mOptions, mRenderingOptions);
+  }
+
+private:
+  RefPtr<ScaledFont> mFont;
+  std::vector<Glyph> mGlyphs;
+  StoredPattern mPattern;
+  DrawOptions mOptions;
+  RefPtr<GlyphRenderingOptions> mRenderingOptions;
+};
+
+class MaskCommand : public DrawingCommand
+{
+public:
+  MaskCommand(const Pattern& aSource,
+              const Pattern& aMask,
+              const DrawOptions& aOptions)
+    : DrawingCommand(CommandType::MASK)
+    , mSource(aSource)
+    , mMask(aMask)
+    , mOptions(aOptions)
+  {
+  }
+
+  virtual void ExecuteOnDT(DrawTarget* aDT, const Matrix*) const
+  {
+    aDT->Mask(mSource, mMask, mOptions);
+  }
+
+private:
+  StoredPattern mSource;
+  StoredPattern mMask;
+  DrawOptions mOptions;
+};
+
+class MaskSurfaceCommand : public DrawingCommand
+{
+public:
+  MaskSurfaceCommand(const Pattern& aSource,
+                     const SourceSurface* aMask,
+                     const Point& aOffset,
+                     const DrawOptions& aOptions)
+    : DrawingCommand(CommandType::MASKSURFACE)
+    , mSource(aSource)
+    , mMask(const_cast<SourceSurface*>(aMask))
+    , mOffset(aOffset)
+    , mOptions(aOptions)
+  {
+  }
+
+  virtual void ExecuteOnDT(DrawTarget* aDT, const Matrix*) const
+  {
+    aDT->MaskSurface(mSource, mMask, mOffset, mOptions);
+  }
+
+private:
+  StoredPattern mSource;
+  RefPtr<SourceSurface> mMask;
+  Point mOffset;
+  DrawOptions mOptions;
+};
+
+class PushClipCommand : public DrawingCommand
+{
+public:
+  explicit PushClipCommand(const Path* aPath)
+    : DrawingCommand(CommandType::PUSHCLIP)
+    , mPath(const_cast<Path*>(aPath))
+  {
+  }
+
+  virtual void ExecuteOnDT(DrawTarget* aDT, const Matrix*) const
+  {
+    aDT->PushClip(mPath);
+  }
+
+private:
+  RefPtr<Path> mPath;
+};
+
+class PushClipRectCommand : public DrawingCommand
+{
+public:
+  explicit PushClipRectCommand(const Rect& aRect)
+    : DrawingCommand(CommandType::PUSHCLIPRECT)
+    , mRect(aRect)
+  {
+  }
+
+  virtual void ExecuteOnDT(DrawTarget* aDT, const Matrix*) const
+  {
+    aDT->PushClipRect(mRect);
+  }
+
+private:
+  Rect mRect;
+};
+
+class PopClipCommand : public DrawingCommand
+{
+public:
+  PopClipCommand()
+    : DrawingCommand(CommandType::POPCLIP)
+  {
+  }
+
+  virtual void ExecuteOnDT(DrawTarget* aDT, const Matrix*) const
+  {
+    aDT->PopClip();
+  }
+};
+
+class SetTransformCommand : public DrawingCommand
+{
+public:
+  explicit SetTransformCommand(const Matrix& aTransform)
+    : DrawingCommand(CommandType::SETTRANSFORM)
+    , mTransform(aTransform)
+  {
+  }
+
+  virtual void ExecuteOnDT(DrawTarget* aDT, const Matrix* aMatrix) const
+  {
+    if (aMatrix) {
+      aDT->SetTransform(mTransform * (*aMatrix));
+    } else {
+      aDT->SetTransform(mTransform);
+    }
+  }
+
+private:
+  Matrix mTransform;
+};
+
+class FlushCommand : public DrawingCommand
+{
+public:
+  explicit FlushCommand()
+    : DrawingCommand(CommandType::FLUSH)
+  {
+  }
+
+  virtual void ExecuteOnDT(DrawTarget* aDT, const Matrix*) const
+  {
+    aDT->Flush();
+  }
+};
+
+} // namespace gfx
+
+} // namespace mozilla
+
+#endif /* MOZILLA_GFX_DRAWCOMMAND_H_ */