Quelle SourceSurfaceCairo.h Sprache: C

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef _MOZILLA_GFX_OP_SOURCESURFACE_CAIRO_H
#define _MOZILLA_GFX_OP_SOURCESURFACE_CAIRO_H

#include "2D.h"

namespace mozilla {
namespace gfx {

class DrawTargetCairo;

class SourceSurfaceCairo : public SourceSurface {
public:
  MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(SourceSurfaceCairo, override)

  // Create a SourceSurfaceCairo. The surface will not be copied, but simply
  // referenced.
  // If aDrawTarget is non-nullptr, it is assumed that this is a snapshot source
  // surface, and we'll call DrawTargetCairo::RemoveSnapshot(this) on it when
  // we're destroyed.
  SourceSurfaceCairo(cairo_surface_t* aSurface, const IntSize& aSize,
                     const SurfaceFormat& aFormat,
                     DrawTargetCairo* aDrawTarget = nullptr);
  virtual ~SourceSurfaceCairo();

  SurfaceType GetType() const override { return SurfaceType::CAIRO; }
  IntSize GetSize() const override;
  SurfaceFormat GetFormat() const override;
  already_AddRefed<DataSourceSurface> GetDataSurface() override;

  cairo_surface_t* GetSurface() const;

private:  // methods
  friend class DrawTargetCairo;
  void DrawTargetWillChange();

private:  // data
  IntSize mSize;
  SurfaceFormat mFormat;
  cairo_surface_t* mSurface;
  DrawTargetCairo* mDrawTarget;
};

class DataSourceSurfaceCairo : public DataSourceSurface {
public:
  MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(DataSourceSurfaceCairo, override)

  explicit DataSourceSurfaceCairo(cairo_surface_t* imageSurf);
  virtual ~DataSourceSurfaceCairo();
  unsigned char* GetData() override;
  int32_t Stride() override;

  SurfaceType GetType() const override { return SurfaceType::CAIRO_IMAGE; }
  IntSize GetSize() const override;
  SurfaceFormat GetFormat() const override;

  cairo_surface_t* GetSurface() const;

private:
  cairo_surface_t* mImageSurface;
};

}  // namespace gfx
}  // namespace mozilla

#endif  // _MOZILLA_GFX_OP_SOURCESURFACE_CAIRO_H

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