tor-browser

The Tor Browser
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SourceSurfaceCairo.h (2240B)

      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_OP_SOURCESURFACE_CAIRO_H
      8 #define _MOZILLA_GFX_OP_SOURCESURFACE_CAIRO_H
      9 
     10 #include "2D.h"
     11 
     12 namespace mozilla {
     13 namespace gfx {
     14 
     15 class DrawTargetCairo;
     16 
     17 class SourceSurfaceCairo : public SourceSurface {
     18 public:
     19  MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(SourceSurfaceCairo, override)
     20 
     21  // Create a SourceSurfaceCairo. The surface will not be copied, but simply
     22  // referenced.
     23  // If aDrawTarget is non-nullptr, it is assumed that this is a snapshot source
     24  // surface, and we'll call DrawTargetCairo::RemoveSnapshot(this) on it when
     25  // we're destroyed.
     26  SourceSurfaceCairo(cairo_surface_t* aSurface, const IntSize& aSize,
     27                     const SurfaceFormat& aFormat,
     28                     DrawTargetCairo* aDrawTarget = nullptr);
     29  virtual ~SourceSurfaceCairo();
     30 
     31  SurfaceType GetType() const override { return SurfaceType::CAIRO; }
     32  IntSize GetSize() const override;
     33  SurfaceFormat GetFormat() const override;
     34  already_AddRefed<DataSourceSurface> GetDataSurface() override;
     35 
     36  cairo_surface_t* GetSurface() const;
     37 
     38 private:  // methods
     39  friend class DrawTargetCairo;
     40  void DrawTargetWillChange();
     41 
     42 private:  // data
     43  IntSize mSize;
     44  SurfaceFormat mFormat;
     45  cairo_surface_t* mSurface;
     46  DrawTargetCairo* mDrawTarget;
     47 };
     48 
     49 class DataSourceSurfaceCairo : public DataSourceSurface {
     50 public:
     51  MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(DataSourceSurfaceCairo, override)
     52 
     53  explicit DataSourceSurfaceCairo(cairo_surface_t* imageSurf);
     54  virtual ~DataSourceSurfaceCairo();
     55  unsigned char* GetData() override;
     56  int32_t Stride() override;
     57 
     58  SurfaceType GetType() const override { return SurfaceType::CAIRO_IMAGE; }
     59  IntSize GetSize() const override;
     60  SurfaceFormat GetFormat() const override;
     61 
     62  cairo_surface_t* GetSurface() const;
     63 
     64 private:
     65  cairo_surface_t* mImageSurface;
     66 };
     67 
     68 }  // namespace gfx
     69 }  // namespace mozilla
     70 
     71 #endif  // _MOZILLA_GFX_OP_SOURCESURFACE_CAIRO_H