1 files changed, 57 insertions, 0 deletions
diff --git a/chromium/third_party/skia/src/gpu/GrDistanceFieldTextContext.h b/chromium/third_party/skia/src/gpu/GrDistanceFieldTextContext.h
new file mode 100644
index 00000000000..3a602f050b3
--- /dev/null
+++ b/chromium/third_party/skia/src/gpu/GrDistanceFieldTextContext.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef GrDistanceFieldTextContext_DEFINED
+#define GrDistanceFieldTextContext_DEFINED
+
+#include "GrTextContext.h"
+
+class GrTextStrike;
+
+/*
+ * This class implements GrTextContext using distance field fonts
+ */
+class GrDistanceFieldTextContext : public GrTextContext {
+public:
+    GrDistanceFieldTextContext(GrContext*, const SkDeviceProperties&, bool enable);
+    virtual ~GrDistanceFieldTextContext();
+
+    virtual void drawText(const GrPaint&, const SkPaint&, const char text[], size_t byteLength,
+                          SkScalar x, SkScalar y) SK_OVERRIDE;
+    virtual void drawPosText(const GrPaint&, const SkPaint&,
+                             const char text[], size_t byteLength,
+                             const SkScalar pos[], SkScalar constY,
+                             int scalarsPerPosition) SK_OVERRIDE;
+
+    virtual bool canDraw(const SkPaint& paint) SK_OVERRIDE;
+
+private:
+    GrTextStrike*           fStrike;
+    SkScalar                fTextRatio;
+    bool                    fUseLCDText;
+    bool                    fEnableDFRendering;
+    GrTexture*              fGammaTexture;
+
+    void init(const GrPaint&, const SkPaint&);
+    void drawPackedGlyph(GrGlyph::PackedID, SkFixed left, SkFixed top, GrFontScaler*);
+    void flushGlyphs();                 // automatically called by destructor
+    void finish();
+
+    enum {
+        kMinRequestedGlyphs      = 1,
+        kDefaultRequestedGlyphs  = 64,
+        kMinRequestedVerts       = kMinRequestedGlyphs * 4,
+        kDefaultRequestedVerts   = kDefaultRequestedGlyphs * 4,
+    };
+
+    SkPoint*                fVertices;
+    int32_t                 fMaxVertices;
+    GrTexture*              fCurrTexture;
+    int                     fCurrVertex;
+};
+
+#endif