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
225
226
227
228
229
230
231
232
233
234
235
|
/* vi: ts=8 sts=4 sw=4
*
*
* This file is part of the KDE libraries.
* Copyright (C) 1999,2000 Geert Jansen <jansen@kde.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* Shared pixmap client for KDE.
*/
#include "config.h"
#include <tqrect.h>
#include <tqsize.h>
#include <tqstring.h>
#include <tqpixmap.h>
#include <tqwindowdefs.h>
#include <tqwidget.h>
#ifdef Q_WS_X11
#include <tdeapplication.h>
#include <krootprop.h>
#include <ksharedpixmap.h>
#include <kdebug.h>
#include <stdlib.h> // for abs
#include <X11/Xlib.h>
// Make sure to include all this X-based shit before we clean up the mess.
// Needed for --enable-final. Not needed by this file itself!
#include <X11/Xutil.h>
#ifdef HAVE_MITSHM
#include <X11/extensions/XShm.h>
#endif
#include <netwm.h>
// Clean up the mess
#undef Bool
#undef Above
#undef Below
#undef KeyPress
#undef KeyRelease
#undef FocusOut
/**
* TDESharedPixmap
*/
class TDESharedPixmapPrivate
{
public:
Atom pixmap;
Atom target;
Atom selection;
TQRect rect;
};
TDESharedPixmap::TDESharedPixmap()
: TQWidget(0L, "shpixmap comm window")
{
d = new TDESharedPixmapPrivate;
init();
}
TDESharedPixmap::~TDESharedPixmap()
{
delete d;
}
void TDESharedPixmap::init()
{
d->pixmap = XInternAtom(tqt_xdisplay(), "PIXMAP", false);
TQCString atom;
atom.sprintf("target prop for window %lx", static_cast<unsigned long int>(winId()));
d->target = XInternAtom(tqt_xdisplay(), atom.data(), false);
d->selection = None;
}
bool TDESharedPixmap::isAvailable(const TQString & name) const
{
TQString str = TQString("KDESHPIXMAP:%1").arg(name);
Atom sel = XInternAtom(tqt_xdisplay(), str.latin1(), true);
if (sel == None)
return false;
return XGetSelectionOwner(tqt_xdisplay(), sel) != None;
}
bool TDESharedPixmap::loadFromShared(const TQString & name, const TQRect & rect)
{
d->rect = rect;
if (d->selection != None)
// already active
return false;
TQPixmap::resize(0, 0); // invalidate
TQString str = TQString("KDESHPIXMAP:%1").arg(name);
d->selection = XInternAtom(tqt_xdisplay(), str.latin1(), true);
if (d->selection == None)
return false;
if (XGetSelectionOwner(tqt_xdisplay(), d->selection) == None)
{
d->selection = None;
return false;
}
XConvertSelection(tqt_xdisplay(), d->selection, d->pixmap, d->target,
winId(), CurrentTime);
return true;
}
bool TDESharedPixmap::x11Event(XEvent *event)
{
if (event->type != SelectionNotify)
return false;
XSelectionEvent *ev = &event->xselection;
if (ev->selection != d->selection)
return false;
if ((ev->target != d->pixmap) || (ev->property == None))
{
kdWarning(270) << k_funcinfo << "illegal selection notify event.\n";
d->selection = None;
emit done(false);
return true;
}
// Read pixmap handle from ev->property
int dummy, format;
unsigned long nitems, ldummy;
unsigned char *pixmap_id = 0;
Atom type;
XGetWindowProperty(tqt_xdisplay(), winId(), ev->property, 0, 1, false,
d->pixmap, &type, &format, &nitems, &ldummy,
&pixmap_id);
if (nitems != 1 || !pixmap_id)
{
kdWarning(270) << k_funcinfo << "could not read property, nitems = " << nitems << "\n";
emit done(false);
return true;
}
Window root;
unsigned int width, height, udummy;
void *drawable_id = (void *) pixmap_id;
Drawable pixmap = *(Drawable*) drawable_id;
Status status = XGetGeometry(tqt_xdisplay(), pixmap, &root, &dummy, &dummy, &width, &height, &udummy, &udummy);
// HACK
// XGetGeometry can return bogus values on some systems, leading to a SIGFPE
// See http://bugs.trinitydesktop.org/show_bug.cgi?id=1161 for details
// Work around that here...
if ((width < 1) || (height < 1))
return false;
if (status == BadDrawable)
return false;
if (d->rect.isEmpty())
{
TQPixmap::resize(width, height);
XCopyArea(tqt_xdisplay(), pixmap, ((KPixmap*)this)->handle(), tqt_xget_temp_gc(tqt_xscreen(), false),
0, 0, width, height, 0, 0);
XFree(pixmap_id);
XDeleteProperty(tqt_xdisplay(), winId(), ev->property);
d->selection = None;
emit done(true);
return true;
}
// Do some more processing here: Generate a tile that can be used as a
// background tile for the rectangle "rect".
//Check for origin off screen
TQPoint origin(0, 0);
if( d->rect.topLeft().x() < 0 || d->rect.topLeft().y() < 0 ) {
//Save the offset and relocate the rect corners
TQPoint tl = d->rect.topLeft();
TQPoint br = d->rect.bottomRight();
if( tl.x() < 0 ) {
origin.setX( abs( tl.x() ) );
tl.setX( 0 );
}
if( tl.y() < 0 ) {
origin.setY( abs( tl.y() ) );
tl.setY( 0 );
}
TQRect adjustedRect( tl, br );
d->rect = adjustedRect;
}
unsigned w = d->rect.width(), h = d->rect.height();
unsigned tw = QMIN(width, w), th = QMIN(height, h);
unsigned xa = d->rect.x() % width, ya = d->rect.y() % height;
unsigned t1w = QMIN(width-xa,tw), t1h = QMIN(height-ya,th);
TQPixmap::resize( tw+origin.x(), th+origin.y() );
XCopyArea(tqt_xdisplay(), pixmap, (static_cast<KPixmap*>(this))->handle(), tqt_xget_temp_gc(tqt_xscreen(), false),
xa, ya, t1w+origin.x(), t1h+origin.y(), origin.x(), origin.y() );
XCopyArea(tqt_xdisplay(), pixmap, (static_cast<KPixmap*>(this))->handle(), tqt_xget_temp_gc(tqt_xscreen(), false),
0, ya, tw-t1w, t1h, t1w, 0);
XCopyArea(tqt_xdisplay(), pixmap, (static_cast<KPixmap*>(this))->handle(), tqt_xget_temp_gc(tqt_xscreen(), false),
xa, 0, t1w, th-t1h, 0, t1h);
XCopyArea(tqt_xdisplay(), pixmap, (static_cast<KPixmap*>(this))->handle(), tqt_xget_temp_gc(tqt_xscreen(), false),
0, 0, tw-t1w, th-t1h, t1w, t1h);
XFree(pixmap_id);
d->selection = None;
XDeleteProperty(tqt_xdisplay(), winId(), ev->property);
emit done(true);
return true;
}
#include "ksharedpixmap.moc"
#endif
|
