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// Copyright (c) 2012 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/icc_profile.h"
#include <windows.h>
#include <stddef.h>
#include <map>
#include "base/files/file_util.h"
#include "base/lazy_instance.h"
#include "base/macros.h"
#include "base/synchronization/lock.h"
namespace gfx {
namespace {
void ReadBestMonitorICCProfile(std::vector<char>* profile) {
HDC screen_dc = GetDC(NULL);
DWORD path_len = MAX_PATH;
WCHAR path[MAX_PATH + 1];
BOOL result = GetICMProfile(screen_dc, &path_len, path);
ReleaseDC(NULL, screen_dc);
if (!result)
return;
std::string profile_data;
if (!base::ReadFileToString(base::FilePath(path), &profile_data))
return;
size_t length = profile_data.size();
profile->assign(profile_data.data(), profile_data.data() + length);
}
base::LazyInstance<base::Lock> g_best_monitor_color_space_lock =
LAZY_INSTANCE_INITIALIZER;
base::LazyInstance<gfx::ICCProfile> g_best_monitor_color_space =
LAZY_INSTANCE_INITIALIZER;
bool g_has_initialized_best_monitor_color_space = false;
} // namespace
// static
ICCProfile ICCProfile::FromBestMonitor() {
base::AutoLock lock(g_best_monitor_color_space_lock.Get());
return g_best_monitor_color_space.Get();
}
// static
bool ICCProfile::CachedProfilesNeedUpdate() {
base::AutoLock lock(g_best_monitor_color_space_lock.Get());
return !g_has_initialized_best_monitor_color_space;
}
// static
void ICCProfile::UpdateCachedProfilesOnBackgroundThread() {
std::vector<char> icc_profile;
ReadBestMonitorICCProfile(&icc_profile);
gfx::ICCProfile color_space = FromData(
icc_profile.data(), icc_profile.size());
base::AutoLock lock(g_best_monitor_color_space_lock.Get());
g_best_monitor_color_space.Get() = color_space;
g_has_initialized_best_monitor_color_space = true;
}
} // namespace gfx
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