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
|
/***************************************************************************
* Copyright (C) 2015 Kai Uwe Broulik <kde@privat.broulik.de> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . *
***************************************************************************/
#include "kwinkscreenhelpereffect.h"
#include <QCoreApplication>
#include <QX11Info>
namespace PowerDevil
{
KWinKScreenHelperEffect::KWinKScreenHelperEffect(QObject *parent) : QObject(parent)
{
m_abortTimer.setSingleShot(true);
m_abortTimer.setInterval(11000);
connect(&m_abortTimer, &QTimer::timeout, this, &KWinKScreenHelperEffect::stop);
qApp->installNativeEventFilter(this);
}
KWinKScreenHelperEffect::~KWinKScreenHelperEffect()
{
stop();
}
bool KWinKScreenHelperEffect::start()
{
m_isValid = checkValid();
if (!m_isValid) {
// emit fade out right away since the effect is not available
Q_EMIT fadedOut();
return false;
}
m_running = true;
setEffectProperty(1);
m_abortTimer.start();
return true;
}
void KWinKScreenHelperEffect::stop()
{
// Maybe somebody got confused, just reset the property then
if (m_state == NormalState) {
setEffectProperty(0);
} else {
setEffectProperty(3);
}
m_running = false;
m_abortTimer.stop();
}
bool KWinKScreenHelperEffect::checkValid()
{
#ifdef HAVE_XCB
if (QX11Info::isPlatformX11()) {
QScopedPointer<xcb_list_properties_reply_t, QScopedPointerPodDeleter> propsReply(xcb_list_properties_reply(QX11Info::connection(),
xcb_list_properties_unchecked(QX11Info::connection(), QX11Info::appRootWindow()),
NULL));
QScopedPointer<xcb_intern_atom_reply_t, QScopedPointerPodDeleter> atomReply(xcb_intern_atom_reply(QX11Info::connection(),
xcb_intern_atom_unchecked(QX11Info::connection(), false, 25, "_KDE_KWIN_KSCREEN_SUPPORT"),
NULL));
if (propsReply.isNull() || atomReply.isNull()) {
return false;
}
auto *atoms = xcb_list_properties_atoms(propsReply.data());
for (int i = 0; i < propsReply->atoms_len; ++i) {
if (atoms[i] == atomReply->atom) {
m_atom = atomReply->atom;
return true;
}
}
m_atom = 0;
return false;
}
#endif
return false;
}
void KWinKScreenHelperEffect::setEffectProperty(long value)
{
#ifdef HAVE_XCB
if (m_isValid && QX11Info::isPlatformX11()) {
xcb_change_property(QX11Info::connection(), XCB_PROP_MODE_REPLACE, QX11Info::appRootWindow(), m_atom, XCB_ATOM_CARDINAL, 32, 1, &value);
}
#else
Q_UNUSED(value);
#endif
}
bool KWinKScreenHelperEffect::nativeEventFilter(const QByteArray &eventType, void *message, long int *result)
{
Q_UNUSED(result);
if (eventType != "xcb_generic_event_t") {
return false;
}
#ifdef HAVE_XCB
if (m_isValid && QX11Info::isPlatformX11()) {
auto e = static_cast<xcb_generic_event_t *>(message);
const uint8_t type = e->response_type & ~0x80;
if (type == XCB_PROPERTY_NOTIFY) {
auto *event = reinterpret_cast<xcb_property_notify_event_t *>(e);
if (event->window == QX11Info::appRootWindow()) {
if (event->atom != m_atom) {
return false;
}
auto cookie = xcb_get_property(QX11Info::connection(), false, QX11Info::appRootWindow(), m_atom, XCB_ATOM_CARDINAL, 0, 1);
QScopedPointer<xcb_get_property_reply_t, QScopedPointerPodDeleter> reply(xcb_get_property_reply(QX11Info::connection(), cookie, NULL));
if (reply.isNull() || reply.data()->value_len != 1 || reply.data()->format != uint8_t(32)) {
return false;
}
auto *data = reinterpret_cast<uint32_t *>(xcb_get_property_value(reply.data()));
if (!data) {
return false;
}
switch(*data) {
case 1:
m_state = FadingOutState;
break;
case 2:
m_state = FadedOutState;
if (m_running) {
Q_EMIT fadedOut();
}
break;
case 3:
m_state = FadingInState;
m_running = false;
m_abortTimer.stop();
break;
default:
m_state = NormalState;
m_running = false;
}
Q_EMIT stateChanged(m_state);
}
}
}
#else
Q_UNUSED(message);
#endif
return false;
}
} // namespace PowerDevil
|
