gfx/2d/SourceSurfaceCairo.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_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