1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/display/win/color_profile_reader.h"
#include <windows.h>
#include <stddef.h>
#include "base/compiler_specific.h"
#include "base/files/file_util.h"
#include "base/functional/bind.h"
#include "base/task/thread_pool.h"
#include "base/threading/scoped_thread_priority.h"
#include "ui/display/win/display_info.h"
#include "ui/gfx/icc_profile.h"
namespace display {
namespace win {
namespace {
BOOL CALLBACK EnumMonitorForProfilePathCallback(HMONITOR monitor,
HDC input_hdc,
LPRECT rect,
LPARAM data) {
std::wstring device_name;
MONITORINFOEX monitor_info;
UNSAFE_TODO(::ZeroMemory(&monitor_info, sizeof(monitor_info)));
monitor_info.cbSize = sizeof(monitor_info);
::GetMonitorInfo(monitor, &monitor_info);
device_name = std::wstring(monitor_info.szDevice);
std::wstring profile_path;
HDC hdc = ::CreateDC(monitor_info.szDevice, NULL, NULL, NULL);
if (hdc) {
DWORD path_length = MAX_PATH;
WCHAR path[MAX_PATH + 1];
BOOL result = ::GetICMProfile(hdc, &path_length, path);
::DeleteDC(hdc);
if (result)
profile_path = std::wstring(path);
}
int64_t display_id =
internal::DisplayInfo::DisplayIdFromMonitorInfo(monitor_info);
std::map<int64_t, std::wstring>* display_id_to_path_map =
reinterpret_cast<std::map<int64_t, std::wstring>*>(data);
(*display_id_to_path_map)[display_id] = profile_path;
return TRUE;
}
} // namespace
ColorProfileReader::ColorProfileReader(Client* client) : client_(client) {}
ColorProfileReader::~ColorProfileReader() {}
void ColorProfileReader::UpdateIfNeeded() {
// There is a potential race condition wherein the result from
// EnumDisplayMonitors is already stale by the time that we get
// back to BuildDisplayIdToPathMapCompleted. To fix this we would
// need to record the fact that we early-out-ed because of
// update_in_flight_ was true, and then re-issue
// BuildDisplayIdToPathMapOnBackgroundThread when the update
// returned.
if (update_in_flight_)
return;
update_in_flight_ = true;
// Enumerate device profile paths on a background thread. When this
// completes it will run another task on a background thread to read
// the profiles. This can impact the color of the browser so we want
// to set this to a higher priority to complete the task earlier
// during startup.
base::ThreadPool::PostTaskAndReplyWithResult(
FROM_HERE, {base::MayBlock(), base::TaskPriority::USER_VISIBLE},
base::BindOnce(
&ColorProfileReader::BuildDisplayIdToPathMapOnBackgroundThread),
base::BindOnce(&ColorProfileReader::BuildDisplayIdToPathMapCompleted,
weak_factory_.GetWeakPtr()));
}
// static
ColorProfileReader::DisplayIdToPathMap
ColorProfileReader::BuildDisplayIdToPathMapOnBackgroundThread() {
SCOPED_MAY_LOAD_LIBRARY_AT_BACKGROUND_PRIORITY();
DisplayIdToPathMap display_id_to_path_map;
EnumDisplayMonitors(nullptr, nullptr, EnumMonitorForProfilePathCallback,
reinterpret_cast<LPARAM>(&display_id_to_path_map));
return display_id_to_path_map;
}
void ColorProfileReader::BuildDisplayIdToPathMapCompleted(
DisplayIdToPathMap new_display_id_to_path_map) {
DCHECK(update_in_flight_);
// Are there any changes from previous results
if (display_id_to_path_map_ == new_display_id_to_path_map) {
update_in_flight_ = false;
return;
}
display_id_to_path_map_ = new_display_id_to_path_map;
base::ThreadPool::PostTaskAndReplyWithResult(
FROM_HERE, {base::MayBlock(), base::TaskPriority::USER_VISIBLE},
base::BindOnce(&ColorProfileReader::ReadProfilesOnBackgroundThread,
new_display_id_to_path_map),
base::BindOnce(&ColorProfileReader::ReadProfilesCompleted,
weak_factory_.GetWeakPtr()));
}
// static
ColorProfileReader::DisplayIdToDataMap
ColorProfileReader::ReadProfilesOnBackgroundThread(
DisplayIdToPathMap new_display_id_to_path_map) {
DisplayIdToDataMap new_display_id_to_data_map;
for (const auto& [display_id, profile_path] : new_display_id_to_path_map) {
std::string profile_data;
base::ReadFileToString(base::FilePath(profile_path), &profile_data);
new_display_id_to_data_map[display_id] = profile_data;
}
return new_display_id_to_data_map;
}
void ColorProfileReader::ReadProfilesCompleted(
DisplayIdToDataMap display_id_to_data_map) {
DCHECK(update_in_flight_);
update_in_flight_ = false;
display_id_to_profile_map_.clear();
for (const auto& [display_id, profile_data] : display_id_to_data_map) {
if (!profile_data.empty()) {
display_id_to_profile_map_[display_id] =
gfx::ICCProfile::FromData(profile_data.data(), profile_data.size());
}
}
client_->OnColorProfilesChanged();
}
gfx::ColorSpace ColorProfileReader::GetDisplayColorSpace(
int64_t display_id) const {
gfx::ICCProfile icc_profile;
auto found = display_id_to_profile_map_.find(display_id);
if (found != display_id_to_profile_map_.end())
icc_profile = found->second;
return icc_profile.IsValid() ? icc_profile.GetPrimariesOnlyColorSpace()
: gfx::ColorSpace::CreateSRGB();
}
} // namespace win
} // namespace display
|
