ui/gfx/color_profile.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_COLOR_PROFILE_H_
   6 #define UI_GFX_COLOR_PROFILE_H_
   7
   8 #include <vector>
   9
  10 #include "ui/gfx/geometry/rect.h"
  11 #include "ui/gfx/gfx_export.h"
  12
  13 namespace gfx {
  14
  15 static const size_t kMinProfileLength = 128;
  16 static const size_t kMaxProfileLength = 4 * 1024 * 1024;
  17
  18 class GFX_EXPORT ColorProfile {
  19  public:
  20   // On Windows, this reads a file from disk so it should not be run on the UI
  21   // or IO thread.
  22   ColorProfile();
  23   ~ColorProfile();
  24
  25   const std::vector<char>& profile() const { return profile_; }
  26
  27  private:
  28   std::vector<char> profile_;
  29
  30   DISALLOW_COPY_AND_ASSIGN(ColorProfile);
  31 };
  32
  33 inline bool InvalidColorProfileLength(size_t length) {
  34   return (length < kMinProfileLength) || (length > kMaxProfileLength);
  35 }
  36
  37 // Return the color profile of the display nearest the screen bounds. On Win32,
  38 // this may read a file from disk so it should not be run on the UI/IO threads.
  39 // If the given bounds are empty, or are off-screen, return false meaning there
  40 // is no color profile associated with the bounds.  Otherwise return true after
  41 // storing the display's color profile in |profile|, which will be empty if the
  42 // standard sRGB color profile should be assumed.
  43 GFX_EXPORT bool GetDisplayColorProfile(const gfx::Rect& bounds,
  44                                        std::vector<char>* profile);
  45 }  // namespace gfx
  46
  47 #endif  // UI_GFX_COLOR_PROFILE_H_