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
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
|
// 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 "chrome/browser/ui/ash/screenshot_taker.h"
#include <climits>
#include <string>
#include "ash/shell.h"
#include "ash/shell_delegate.h"
#include "ash/shell_window_ids.h"
#include "base/bind.h"
#include "base/file_path.h"
#include "base/file_util.h"
#include "base/i18n/time_formatting.h"
#include "base/logging.h"
#include "base/memory/ref_counted_memory.h"
#include "base/stringprintf.h"
#include "base/time.h"
#include "chrome/browser/download/download_prefs.h"
#include "chrome/browser/prefs/pref_service.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/profiles/profile_manager.h"
#include "chrome/browser/ui/window_snapshot/window_snapshot.h"
#include "chrome/common/pref_names.h"
#include "content/public/browser/browser_thread.h"
#include "ui/aura/root_window.h"
#include "ui/aura/window.h"
#if defined(OS_CHROMEOS)
#include "chrome/browser/chromeos/login/user_manager.h"
#endif
namespace {
bool ShouldUse24HourClock() {
#if defined(OS_CHROMEOS)
Profile* profile = ProfileManager::GetDefaultProfileOrOffTheRecord();
if (profile) {
PrefService* pref_service = profile->GetPrefs();
if (pref_service) {
return pref_service->GetBoolean(prefs::kUse24HourClock);
}
}
#endif
return base::GetHourClockType() == base::k24HourClock;
}
FilePath GetScreenshotPath(const FilePath& base_directory,
bool use_24hour_clock) {
base::Time::Exploded now;
base::Time::Now().LocalExplode(&now);
// We don't use base/i18n/time_formatting.h here because it doesn't
// support our format. Don't use ICU either to avoid i18n file names
// for non-English locales.
// TODO(mukai): integrate this logic somewhere time_formatting.h
std::string file_name = base::StringPrintf(
"Screenshot %d-%02d-%02d ", now.year, now.month, now.day_of_month);
if (use_24hour_clock) {
file_name.append(base::StringPrintf(
"%02d:%02d:%02d", now.hour, now.minute, now.second));
} else {
int hour = now.hour;
if (hour > 12) {
hour -= 12;
} else if (hour == 0) {
hour = 12;
}
file_name.append(base::StringPrintf(
"%d:%02d:%02d ", hour, now.minute, now.second));
file_name.append((now.hour >= 12) ? "PM" : "AM");
}
for (int retry = 0; retry < INT_MAX; retry++) {
std::string retry_suffix;
if (retry > 0)
retry_suffix = base::StringPrintf(" (%d)", retry + 1);
FilePath file_path = base_directory.AppendASCII(
file_name + retry_suffix + ".png");
if (!file_util::PathExists(file_path))
return file_path;
}
return FilePath();
}
// |is_logged_in| is used only for ChromeOS. Otherwise it is always true.
void SaveScreenshot(const FilePath& screenshot_directory,
bool use_24hour_clock,
scoped_refptr<base::RefCountedBytes> png_data) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::FILE));
FilePath screenshot_path = GetScreenshotPath(
screenshot_directory, use_24hour_clock);
if (screenshot_path.empty()) {
LOG(ERROR) << "Failed to find a screenshot file name.";
return;
}
if (static_cast<size_t>(file_util::WriteFile(
screenshot_path,
reinterpret_cast<char*>(&(png_data->data()[0])),
png_data->size())) != png_data->size()) {
LOG(ERROR) << "Failed to save to " << screenshot_path.value();
}
}
bool GrabWindowSnapshot(aura::Window* window,
const gfx::Rect& snapshot_bounds,
std::vector<unsigned char>* png_data) {
#if defined(OS_LINUX)
// We use XGetImage() for Linux/ChromeOS for performance reasons.
// See crbug.com/119492
// TODO(mukai): remove this when the performance issue has been fixed.
if (window->GetRootWindow()->GrabSnapshot(snapshot_bounds, png_data))
return true;
#endif // OS_LINUX
return browser::GrabWindowSnapshot(window, png_data, snapshot_bounds);
}
// How opaque should the layer that we flash onscreen to provide visual
// feedback after the screenshot is taken be?
const float kVisualFeedbackLayerOpacity = 0.25f;
// How long should the visual feedback layer be displayed?
const int64 kVisualFeedbackLayerDisplayTimeMs = 100;
} // namespace
ScreenshotTaker::ScreenshotTaker() {
}
ScreenshotTaker::~ScreenshotTaker() {
}
void ScreenshotTaker::HandleTakePartialScreenshot(
aura::Window* window, const gfx::Rect& rect) {
DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
scoped_refptr<base::RefCountedBytes> png_data(new base::RefCountedBytes);
bool is_logged_in = true;
#if defined(OS_CHROMEOS)
is_logged_in = chromeos::UserManager::Get()->IsUserLoggedIn();
#endif
FilePath screenshot_directory;
if (is_logged_in) {
DownloadPrefs* download_prefs = DownloadPrefs::FromBrowserContext(
ash::Shell::GetInstance()->delegate()->GetCurrentBrowserContext());
screenshot_directory = download_prefs->DownloadPath();
} else {
if (!file_util::GetTempDir(&screenshot_directory)) {
LOG(ERROR) << "Failed to find temporary directory.";
return;
}
}
bool use_24hour_clock = ShouldUse24HourClock();
if (GrabWindowSnapshot(window, rect, &png_data->data())) {
DisplayVisualFeedback(rect);
content::BrowserThread::PostTask(
content::BrowserThread::FILE, FROM_HERE,
base::Bind(&SaveScreenshot, screenshot_directory, use_24hour_clock,
png_data));
} else {
LOG(ERROR) << "Failed to grab the window screenshot";
}
}
void ScreenshotTaker::HandleTakeScreenshot(aura::Window* window) {
HandleTakePartialScreenshot(window, window->bounds());
}
void ScreenshotTaker::CloseVisualFeedbackLayer() {
visual_feedback_layer_.reset();
}
void ScreenshotTaker::DisplayVisualFeedback(const gfx::Rect& rect) {
visual_feedback_layer_.reset(new ui::Layer(ui::LAYER_SOLID_COLOR));
visual_feedback_layer_->SetColor(SK_ColorWHITE);
visual_feedback_layer_->SetOpacity(kVisualFeedbackLayerOpacity);
visual_feedback_layer_->SetBounds(rect);
ui::Layer* parent = ash::Shell::GetContainer(
ash::Shell::GetActiveRootWindow(),
ash::internal::kShellWindowId_OverlayContainer)->layer();
parent->Add(visual_feedback_layer_.get());
visual_feedback_layer_->SetVisible(true);
MessageLoopForUI::current()->PostDelayedTask(
FROM_HERE,
base::Bind(&ScreenshotTaker::CloseVisualFeedbackLayer,
base::Unretained(this)),
base::TimeDelta::FromMilliseconds(kVisualFeedbackLayerDisplayTimeMs));
}
|
