gfx/2d/ScaledFontBase.h

   1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   2  * This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef MOZILLA_GFX_SCALEDFONTBASE_H_
   7 #define MOZILLA_GFX_SCALEDFONTBASE_H_
   8
   9 #include "2D.h"
  10
  11 // Skia uses cairo_scaled_font_t as the internal font type in ScaledFont
  12 #if defined(USE_SKIA) || defined(USE_CAIRO)
  13 #define USE_CAIRO_SCALED_FONT
  14 #endif
  15
  16 #ifdef USE_SKIA
  17 #include "skia/SkPath.h"
  18 #include "skia/SkTypeface.h"
  19 #endif
  20 #ifdef USE_CAIRO_SCALED_FONT
  21 #include "cairo.h"
  22 #endif
  23
  24 class gfxFont;
  25
  26 namespace mozilla {
  27 namespace gfx {
  28
  29 class ScaledFontBase : public ScaledFont
  30 {
  31 public:
  32   MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(ScaledFontBase)
  33   explicit ScaledFontBase(Float aSize);
  34   virtual ~ScaledFontBase();
  35
  36   virtual TemporaryRef<Path> GetPathForGlyphs(const GlyphBuffer &aBuffer, const DrawTarget *aTarget);
  37
  38   virtual void CopyGlyphsToBuilder(const GlyphBuffer &aBuffer, PathBuilder *aBuilder, BackendType aBackendType, const Matrix *aTransformHint);
  39
  40   float GetSize() { return mSize; }
  41
  42 #ifdef USE_SKIA
  43   virtual SkTypeface* GetSkTypeface() { return mTypeface; }
  44 #endif
  45
  46   // Not true, but required to instantiate a ScaledFontBase.
  47   virtual FontType GetType() const { return FontType::SKIA; }
  48
  49 #ifdef USE_CAIRO_SCALED_FONT
  50   cairo_scaled_font_t* GetCairoScaledFont() { return mScaledFont; }
  51   void SetCairoScaledFont(cairo_scaled_font_t* font);
  52 #endif
  53
  54 protected:
  55   friend class DrawTargetSkia;
  56 #ifdef USE_SKIA
  57   SkTypeface* mTypeface;
  58   SkPath GetSkiaPathForGlyphs(const GlyphBuffer &aBuffer);
  59 #endif
  60 #ifdef USE_CAIRO_SCALED_FONT
  61   cairo_scaled_font_t* mScaledFont;
  62 #endif
  63   Float mSize;
  64 };
  65
  66 }
  67 }
  68
  69 #endif /* MOZILLA_GFX_SCALEDFONTBASE_H_ */