cc/resources/resource.h

   1 // Copyright 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CC_RESOURCES_RESOURCE_H_
   6 #define CC_RESOURCES_RESOURCE_H_
   7
   8 #include "cc/base/cc_export.h"
   9 #include "cc/resources/resource_provider.h"
  10 #include "ui/gfx/geometry/size.h"
  11
  12 namespace cc {
  13
  14 class CC_EXPORT Resource {
  15  public:
  16   Resource() : id_(0) {}
  17   Resource(unsigned id, const gfx::Size& size, ResourceFormat format)
  18       : id_(id),
  19         size_(size),
  20         format_(format) {}
  21
  22   ResourceProvider::ResourceId id() const { return id_; }
  23   gfx::Size size() const { return size_; }
  24   ResourceFormat format() const { return format_; }
  25   size_t bytes() const;
  26
  27   inline static size_t MemorySizeBytes(const gfx::Size& size,
  28                                        ResourceFormat format) {
  29     DCHECK_EQ(0u, (BitsPerPixel(format) * size.width() * size.height()) % 8);
  30     return (BitsPerPixel(format) * size.width() * size.height()) / 8;
  31   }
  32
  33  protected:
  34   void set_id(ResourceProvider::ResourceId id) { id_ = id; }
  35   void set_dimensions(const gfx::Size& size, ResourceFormat format) {
  36     size_ = size;
  37     format_ = format;
  38   }
  39
  40  private:
  41   ResourceProvider::ResourceId id_;
  42   gfx::Size size_;
  43   ResourceFormat format_;
  44
  45   DISALLOW_COPY_AND_ASSIGN(Resource);
  46 };
  47
  48 }  // namespace cc
  49
  50 #endif  // CC_RESOURCES_RESOURCE_H_