gfx/ui/color_profile: implement GetDisplayColorProfile on win

Add a global device color profile cache and use it to extract the
color profile associated with screen display devices.

TEST=ui_unittests.exe --gtest_filter="ColorProfileTest*"
BUG=368694

Review URL: https://codereview.chromium.org/312723003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@276589 0039d316-1c4b-4281-b951-d872f2087c98

ui/gfx/color_profile_win.cc

@@ -55,12 +55,48 @@ class ColorProfileCache {
   DISALLOW_COPY_AND_ASSIGN(ColorProfileCache);
 };
 
+base::LazyInstance<ColorProfileCache>::Leaky g_color_profile_cache =
+    LAZY_INSTANCE_INITIALIZER;
+
+inline ColorProfileCache& GetColorProfileCache() {
+  return g_color_profile_cache.Get();
+}
+
 bool GetDisplayColorProfile(const gfx::Rect& bounds,
                             std::vector<char>* profile) {
-  if (bounds.IsEmpty())
+  DCHECK(profile->empty());
+
+  RECT rect = bounds.ToRECT();
+  HMONITOR handle = ::MonitorFromRect(&rect, MONITOR_DEFAULTTONULL);
+  if (bounds.IsEmpty() || !handle)
     return false;
-  // TODO(noel): implement.
-  return false;
+
+  MONITORINFOEX monitor;
+  monitor.cbSize = sizeof(MONITORINFOEX);
+  CHECK(::GetMonitorInfo(handle, &monitor));
+  if (GetColorProfileCache().Find(monitor.szDevice, profile))
+    return true;
+
+  HDC hdc = ::CreateDC(monitor.szDevice, NULL, NULL, NULL);
+  DWORD path_length = MAX_PATH;
+  WCHAR path[MAX_PATH + 1];
+  BOOL result = ::GetICMProfile(hdc, &path_length, path);
+  ::DeleteDC(hdc);
+  if (!result)
+    return false;
+
+  base::FilePath file_name = base::FilePath(path).BaseName();
+  if (file_name != base::FilePath(L"sRGB Color Space Profile.icm")) {
+    std::string data;
+    if (base::ReadFileToString(base::FilePath(path), &data))
+      profile->assign(data.data(), data.data() + data.size());
+    size_t length = profile->size();
+    if (gfx::InvalidColorProfileLength(length))
+      profile->clear();
+  }
+
+  GetColorProfileCache().Insert(monitor.szDevice, *profile);
+  return true;
 }
 
 void ReadColorProfile(std::vector<char>* profile) {

ui/gfx/color_profile_win_unittest.cc

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ui/gfx/color_profile.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace {
+
+bool TestColorProfileUsingScreenBounds(const gfx::Rect& bounds) {
+  std::vector<char> color_profile;
+  return gfx::GetDisplayColorProfile(bounds, &color_profile);
+}
+
+TEST(ColorProfileTest, GetDisplayColorProfile) {
+  const gfx::Rect in_screen_bounds(10, 10, 100, 100);
+  EXPECT_TRUE(TestColorProfileUsingScreenBounds(in_screen_bounds));
+}
+
+TEST(ColorProfileTest, GetDisplayColorProfileForOffScreenBounds) {
+  const gfx::Rect off_screen_bounds(-100, -100, 10, 10);
+  EXPECT_FALSE(TestColorProfileUsingScreenBounds(off_screen_bounds));
+}
+
+TEST(ColorProfileTest, GetDisplayColorProfileForEmptyBounds) {
+  const gfx::Rect empty_screen_bounds(10, 10, 0, 0);
+  EXPECT_TRUE(empty_screen_bounds.IsEmpty());
+  EXPECT_FALSE(TestColorProfileUsingScreenBounds(empty_screen_bounds));
+}
+
+}  // namespace

ui/ui_unittests.gyp

@@ -110,6 +110,7 @@
           'sources': [
             'base/dragdrop/os_exchange_data_win_unittest.cc',
             'base/win/hwnd_subclass_unittest.cc',
+            'gfx/color_profile_win_unittest.cc',
             'gfx/font_fallback_win_unittest.cc',
             'gfx/icon_util_unittest.cc',
             'gfx/icon_util_unittests.rc',