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
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
|
/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qxlibwindowsurface.h"
#include "qxlibintegration.h"
#include <QtCore/qdebug.h>
#include <QWindowSystemInterface>
#include "qxlibwindow.h"
#include "qxlibscreen.h"
#include "qxlibdisplay.h"
# include <sys/ipc.h>
# include <sys/shm.h>
# include <X11/extensions/XShm.h>
QT_BEGIN_NAMESPACE
struct QXlibShmImageInfo {
QXlibShmImageInfo(Display *xdisplay) : image(0), display(xdisplay) {}
~QXlibShmImageInfo() { destroy(); }
void destroy();
XShmSegmentInfo shminfo;
XImage *image;
Display *display;
};
#ifndef DONT_USE_MIT_SHM
void QXlibShmImageInfo::destroy()
{
XShmDetach (display, &shminfo);
XDestroyImage (image);
shmdt (shminfo.shmaddr);
shmctl (shminfo.shmid, IPC_RMID, 0);
}
#endif
void QXlibWindowSurface::resizeShmImage(int width, int height)
{
#ifdef DONT_USE_MIT_SHM
shm_img = QImage(width, height, QImage::Format_RGB32);
#else
QXlibScreen *screen = QXlibScreen::testLiteScreenForWidget(window());
if (image_info)
image_info->destroy();
else
image_info = new QXlibShmImageInfo(screen->display()->nativeDisplay());
Visual *visual = screen->defaultVisual();
XImage *image = XShmCreateImage (screen->display()->nativeDisplay(), visual, 24, ZPixmap, 0,
&image_info->shminfo, width, height);
image_info->shminfo.shmid = shmget (IPC_PRIVATE,
image->bytes_per_line * image->height, IPC_CREAT|0777);
image_info->shminfo.shmaddr = image->data = (char*)shmat (image_info->shminfo.shmid, 0, 0);
image_info->shminfo.readOnly = False;
image_info->image = image;
Status shm_attach_status = XShmAttach(screen->display()->nativeDisplay(), &image_info->shminfo);
Q_ASSERT(shm_attach_status == True);
shm_img = QImage( (uchar*) image->data, image->width, image->height, image->bytes_per_line, QImage::Format_RGB32 );
#endif
painted = false;
}
void QXlibWindowSurface::resizeBuffer(QSize s)
{
if (shm_img.size() != s)
resizeShmImage(s.width(), s.height());
}
QSize QXlibWindowSurface::bufferSize() const
{
return shm_img.size();
}
QXlibWindowSurface::QXlibWindowSurface (QWidget *window)
: QWindowSurface(window),
painted(false), image_info(0)
{
xw = static_cast<QXlibWindow*>(window->platformWindow());
// qDebug() << "QTestLiteWindowSurface::QTestLiteWindowSurface:" << xw->window;
}
QXlibWindowSurface::~QXlibWindowSurface()
{
delete image_info;
}
QPaintDevice *QXlibWindowSurface::paintDevice()
{
return &shm_img;
}
void QXlibWindowSurface::flush(QWidget *widget, const QRegion ®ion, const QPoint &offset)
{
Q_UNUSED(widget);
Q_UNUSED(region);
Q_UNUSED(offset);
if (!painted)
return;
QXlibScreen *screen = QXlibScreen::testLiteScreenForWidget(widget);
GC gc = xw->graphicsContext();
Window window = xw->xWindow();
#ifdef DONT_USE_MIT_SHM
// just convert the image every time...
if (!shm_img.isNull()) {
Visual *visual = DefaultVisual(screen->display(), screen->xScreenNumber());
QImage image = shm_img;
//img.convertToFormat(
XImage *xi = XCreateImage(screen->display(), visual, 24, ZPixmap,
0, (char *) image.scanLine(0), image.width(), image.height(),
32, image.bytesPerLine());
int x = 0;
int y = 0;
/*int r =*/ XPutImage(screen->display(), window, gc, xi, 0, 0, x, y, image.width(), image.height());
xi->data = 0; // QImage owns these bits
XDestroyImage(xi);
}
#else
// Use MIT_SHM
if (image_info && image_info->image) {
//qDebug() << "Here we go" << image_info->image->width << image_info->image->height;
int x = 0;
int y = 0;
// We could set send_event to true, and then use the ShmCompletion to synchronize,
// but let's do like Qt/11 and just use XSync
XShmPutImage (screen->display()->nativeDisplay(), window, gc, image_info->image, 0, 0,
x, y, image_info->image->width, image_info->image->height,
/*send_event*/ False);
screen->display()->sync();
}
#endif
}
// from qwindowsurface.cpp
extern void qt_scrollRectInImage(QImage &img, const QRect &rect, const QPoint &offset);
bool QXlibWindowSurface::scroll(const QRegion &area, int dx, int dy)
{
if (shm_img.isNull())
return false;
const QVector<QRect> rects = area.rects();
for (int i = 0; i < rects.size(); ++i)
qt_scrollRectInImage(shm_img, rects.at(i), QPoint(dx, dy));
return true;
}
void QXlibWindowSurface::beginPaint(const QRegion ®ion)
{
Q_UNUSED(region);
resizeBuffer(size());
}
void QXlibWindowSurface::endPaint(const QRegion ®ion)
{
Q_UNUSED(region);
painted = true; //there is content in the buffer
}
QT_END_NAMESPACE
|
