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 #include "ui/gfx/native_widget_types.h"
  13
  14 namespace gfx {
  15
  16 static const size_t kMinProfileLength = 128;
  17 static const size_t kMaxProfileLength = 4 * 1024 * 1024;
  18
  19 class GFX_EXPORT ColorProfile {
  20  public:
  21   // On Windows, this reads a file from disk so it should not be run on the UI
  22   // or IO thread.
  23   ColorProfile();
  24   ~ColorProfile();
  25
  26   const std::vector<char>& profile() const { return profile_; }
  27
  28  private:
  29   std::vector<char> profile_;
  30
  31   DISALLOW_COPY_AND_ASSIGN(ColorProfile);
  32 };
  33
  34 inline bool InvalidColorProfileLength(size_t length) {
  35   return (length < kMinProfileLength) || (length > kMaxProfileLength);
  36 }
  37
  38 // Return the color profile of the display nearest the screen bounds. On Win32,
  39 // this may read a file from disk so it should not be run on the UI/IO threads.
  40 // If the given bounds are empty, or are off-screen, return false meaning there
  41 // is no color profile associated with the bounds.  Otherwise return true after
  42 // storing the display's color profile in |profile|, which will be empty if the
  43 // standard sRGB color profile should be assumed.
  44 GFX_EXPORT bool GetDisplayColorProfile(const gfx::Rect& bounds,
  45                                        std::vector<char>* profile);
  46 #if defined(OS_MACOSX)
  47 // Return the color profile of the native window. If the window is null, or has
  48 // empty bounds, return false meaning there is no color profile associated with
  49 // the window.  Otherwise return true after storing the window color profile in
  50 // |profile|, which will be empty if the sRGB color profile should be assumed.
  51 GFX_EXPORT bool GetDisplayColorProfile(gfx::NativeWindow window,
  52                                        std::vector<char>* profile);
  53 #endif
  54 }  // namespace gfx
  55
  56 #endif  // UI_GFX_COLOR_PROFILE_H_