ui/gfx/image/image_png_rep.h

   1 // Copyright (c) 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 UI_GFX_IMAGE_IMAGE_PNG_REP_H_
   6 #define UI_GFX_IMAGE_IMAGE_PNG_REP_H_
   7
   8 #include "base/memory/ref_counted_memory.h"
   9 #include "ui/base/layout.h"
  10 #include "ui/base/ui_export.h"
  11
  12 namespace gfx {
  13 class Size;
  14
  15 // An ImagePNGRep represents a bitmap's png encoded data and the scale factor it
  16 // was intended for.
  17 struct UI_EXPORT ImagePNGRep {
  18   ImagePNGRep();
  19   ImagePNGRep(const scoped_refptr<base::RefCountedMemory>& data,
  20               ui::ScaleFactor data_scale_factor);
  21   ~ImagePNGRep();
  22
  23   // Width and height of the image, in pixels.
  24   // If the image is invalid, returns gfx::Size(0, 0).
  25   // Warning: This operation processes the entire image stream, so its result
  26   // should be cached if it is needed multiple times.
  27   gfx::Size Size() const;
  28
  29   scoped_refptr<base::RefCountedMemory> raw_data;
  30   ui::ScaleFactor scale_factor;
  31 };
  32
  33 }  // namespace gfx
  34
  35 #endif  // UI_GFX_IMAGE_IMAGE_PNG_REP_H_