Bug 1308394 - In CopyGlyphsToBuilder, use PathBuilder's backend instead of DrawTarget's. r=bas

--HG--
extra : rebase_source : 27d283fe8fecf613bdc4cc7c0492a0d3e97a3253

gfx/2d/2D.h

@@ -694,7 +694,7 @@ public:
    * implementation in some backends, and more efficient implementation in
    * others.
    */
-  virtual void CopyGlyphsToBuilder(const GlyphBuffer &aBuffer, PathBuilder *aBuilder, BackendType aBackendType, const Matrix *aTransformHint = nullptr) = 0;
+  virtual void CopyGlyphsToBuilder(const GlyphBuffer &aBuffer, PathBuilder *aBuilder, const Matrix *aTransformHint = nullptr) = 0;
 
   /* This gets the metrics of a set of glyphs for the current font face.
    */

gfx/2d/ScaledFontBase.cpp

@@ -151,17 +151,18 @@ ScaledFontBase::GetPathForGlyphs(const GlyphBuffer &aBuffer, const DrawTarget *a
 }
 
 void
-ScaledFontBase::CopyGlyphsToBuilder(const GlyphBuffer &aBuffer, PathBuilder *aBuilder, BackendType aBackendType, const Matrix *aTransformHint)
+ScaledFontBase::CopyGlyphsToBuilder(const GlyphBuffer &aBuffer, PathBuilder *aBuilder, const Matrix *aTransformHint)
 {
+  BackendType backendType = aBuilder->GetBackendType();
 #ifdef USE_SKIA
-  if (aBackendType == BackendType::SKIA) {
+  if (backendType == BackendType::SKIA) {
     PathBuilderSkia *builder = static_cast<PathBuilderSkia*>(aBuilder);
     builder->AppendPath(GetSkiaPathForGlyphs(aBuffer));
     return;
   }
 #endif
 #ifdef USE_CAIRO
-  if (aBackendType == BackendType::CAIRO) {
+  if (backendType == BackendType::CAIRO) {
     MOZ_ASSERT(mScaledFont);
 
     PathBuilderCairo* builder = static_cast<PathBuilderCairo*>(aBuilder);
@@ -191,8 +192,6 @@ ScaledFontBase::CopyGlyphsToBuilder(const GlyphBuffer &aBuffer, PathBuilder *aBu
     return;
   }
 #endif
-
-  MOZ_CRASH("GFX: The specified backend type is not supported by CopyGlyphsToBuilder");
 }
 
 void

gfx/2d/ScaledFontBase.h

@@ -33,7 +33,7 @@ public:
 
   virtual already_AddRefed<Path> GetPathForGlyphs(const GlyphBuffer &aBuffer, const DrawTarget *aTarget);
 
-  virtual void CopyGlyphsToBuilder(const GlyphBuffer &aBuffer, PathBuilder *aBuilder, BackendType aBackendType, const Matrix *aTransformHint);
+  virtual void CopyGlyphsToBuilder(const GlyphBuffer &aBuffer, PathBuilder *aBuilder, const Matrix *aTransformHint);
 
   virtual void GetGlyphDesignMetrics(const uint16_t* aGlyphIndices, uint32_t aNumGlyphs, GlyphMetrics* aGlyphMetrics);
 

gfx/2d/ScaledFontDWrite.cpp

@@ -151,10 +151,11 @@ ScaledFontDWrite::GetSkTypeface()
 #endif
 
 void
-ScaledFontDWrite::CopyGlyphsToBuilder(const GlyphBuffer &aBuffer, PathBuilder *aBuilder, BackendType aBackendType, const Matrix *aTransformHint)
+ScaledFontDWrite::CopyGlyphsToBuilder(const GlyphBuffer &aBuffer, PathBuilder *aBuilder, const Matrix *aTransformHint)
 {
-  if (aBackendType != BackendType::DIRECT2D && aBackendType != BackendType::DIRECT2D1_1) {
-    ScaledFontBase::CopyGlyphsToBuilder(aBuffer, aBuilder, aBackendType, aTransformHint);
+  BackendType backendType = aBuilder->GetBackendType();
+  if (backendType != BackendType::DIRECT2D && backendType != BackendType::DIRECT2D1_1) {
+    ScaledFontBase::CopyGlyphsToBuilder(aBuffer, aBuilder, aTransformHint);
     return;
   }
 

gfx/2d/ScaledFontDWrite.h

@@ -32,7 +32,7 @@ public:
   virtual FontType GetType() const { return FontType::DWRITE; }
 
   virtual already_AddRefed<Path> GetPathForGlyphs(const GlyphBuffer &aBuffer, const DrawTarget *aTarget);
-  virtual void CopyGlyphsToBuilder(const GlyphBuffer &aBuffer, PathBuilder *aBuilder, BackendType aBackendType, const Matrix *aTransformHint);
+  virtual void CopyGlyphsToBuilder(const GlyphBuffer &aBuffer, PathBuilder *aBuilder, const Matrix *aTransformHint);
 
   void CopyGlyphsToSink(const GlyphBuffer &aBuffer, ID2D1GeometrySink *aSink);
 

gfx/thebes/gfxFont.cpp

@@ -1736,8 +1736,7 @@ private:
             mRunParams.context->EnsurePathBuilder();
             Matrix mat = mRunParams.dt->GetTransform();
             mFontParams.scaledFont->CopyGlyphsToBuilder(
-                buf, mRunParams.context->mPathBuilder,
-                mRunParams.dt->GetBackendType(), &mat);
+                buf, mRunParams.context->mPathBuilder, &mat);
         }
 
         mNumGlyphs = 0;