gfx/2d/ScaledFontBase.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef MOZILLA_GFX_SCALEDFONTBASE_H_
   8 #define MOZILLA_GFX_SCALEDFONTBASE_H_
   9
  10 #include "2D.h"
  11
  12 #include "skia/include/core/SkFont.h"
  13 #include "skia/include/core/SkPath.h"
  14 #include "skia/include/core/SkTypeface.h"
  15 // Skia uses cairo_scaled_font_t as the internal font type in ScaledFont
  16 #include "cairo.h"
  17
  18 namespace mozilla {
  19 namespace gfx {
  20
  21 class ScaledFontBase : public ScaledFont {
  22  public:
  23   MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(ScaledFontBase, override)
  24
  25   ScaledFontBase(const RefPtr<UnscaledFont>& aUnscaledFont, Float aSize);
  26   virtual ~ScaledFontBase();
  27
  28   virtual already_AddRefed<Path> GetPathForGlyphs(
  29       const GlyphBuffer& aBuffer, const DrawTarget* aTarget) override;
  30
  31   virtual void CopyGlyphsToBuilder(const GlyphBuffer& aBuffer,
  32                                    PathBuilder* aBuilder,
  33                                    const Matrix* aTransformHint) override;
  34
  35   virtual Float GetSize() const override { return mSize; }
  36
  37   SkTypeface* GetSkTypeface();
  38   virtual void SetupSkFontDrawOptions(SkFont& aFont) {}
  39
  40   virtual cairo_scaled_font_t* GetCairoScaledFont() override;
  41
  42  protected:
  43   friend class DrawTargetSkia;
  44   Atomic<SkTypeface*> mTypeface;
  45   virtual SkTypeface* CreateSkTypeface() { return nullptr; }
  46   SkPath GetSkiaPathForGlyphs(const GlyphBuffer& aBuffer);
  47   virtual cairo_font_face_t* CreateCairoFontFace(
  48       cairo_font_options_t* aFontOptions) {
  49     return nullptr;
  50   }
  51   virtual void PrepareCairoScaledFont(cairo_scaled_font_t* aFont) {}
  52   cairo_scaled_font_t* mScaledFont;
  53   Float mSize;
  54 };
  55
  56 }  // namespace gfx
  57 }  // namespace mozilla
  58
  59 #endif /* MOZILLA_GFX_SCALEDFONTBASE_H_ */