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libtdescreensaver

  • libtdescreensaver
tdescreensaver.cpp
1 /* This file is part of the KDE libraries
2 
3  Copyright (c) 2001 Martin R. Jones <mjones@kde.org>
4 
5  This library is free software; you can redistribute it and/or
6  modify it under the terms of the GNU Library General Public
7  License as published by the Free Software Foundation; either
8  version 2 of the License, or (at your option) any later version.
9 
10  This library is distributed in the hope that it will be useful,
11  but WITHOUT ANY WARRANTY; without even the implied warranty of
12  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13  Library General Public License for more details.
14 
15  You should have received a copy of the GNU Library General Public License
16  along with this library; see the file COPYING.LIB. If not, write to
17  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18  Boston, MA 02110-1301, USA.
19 */
20 
21 #include <tqpainter.h>
22 #include <tqtimer.h>
23 #include <tdeapplication.h>
24 #include "tdescreensaver.h"
25 #ifdef TQ_WS_X11
26 #include <X11/Xlib.h>
27 #else
28 typedef WId Window;
29 #endif
30 
31 #undef KeyPress
32 #undef KeyRelease
33 
34 //-----------------------------------------------------------------------------
35 
36 class KScreenSaverPrivate
37 {
38 public:
39  TQWidget *owner;
40 };
41 
42 KScreenSaver::KScreenSaver( WId id ) : TQWidget()
43 {
44  Window root;
45  int ai;
46  unsigned int au;
47  unsigned int w = 0;
48  unsigned int h = 0;
49 
50  XSync(tqt_xdisplay(), false);
51 
52  d = new KScreenSaverPrivate;
53  d->owner = find( id );
54  if ( d->owner )
55  installEventFilter( this );
56 
57  if ( id )
58  {
59 #ifdef TQ_WS_X11 //FIXME
60  XGetGeometry(tqt_xdisplay(), (Drawable)id, &root, &ai, &ai,
61  &w, &h, &au, &au);
62 #endif
63 
64  create( id, false, true );
65  }
66 
67  if ( w == 0 ) w = 600;
68  if ( h == 0 ) h = 420;
69  resize( w, h );
70  TDEApplication::sendPostedEvents();
71  show();
72 }
73 
74 KScreenSaver::~KScreenSaver()
75 {
76  destroy( false, false );
77  delete d;
78 }
79 
80 void KScreenSaver::embed( TQWidget *w )
81 {
82  TDEApplication::sendPostedEvents();
83 #ifdef TQ_WS_X11 //FIXME
84  XReparentWindow(tqt_xdisplay(), w->winId(), winId(), 0, 0);
85 #endif
86  w->setGeometry( 0, 0, width(), height() );
87  TDEApplication::sendPostedEvents();
88 }
89 
90 bool KScreenSaver::eventFilter( TQObject *o, TQEvent *e )
91 {
92  // make sure events get to the original window owner
93  if ( d->owner && o == this ) {
94  TQApplication::sendEvent( d->owner, e );
95  return false;
96  }
97 
98  return TQWidget::eventFilter( o, e );
99 }
100 
101 //============================================================================
102 
103 class KBlankEffectPrivate
104 {
105 public:
106  KBlankEffect::BlankEffect currentEffect;
107  int effectProgress;
108  TQTimer *timer;
109  TQWidget *widget;
110 };
111 
112 KBlankEffect::BlankEffect KBlankEffect::effects[] = {
113  &KBlankEffect::blankNormal,
114  &KBlankEffect::blankSweepRight,
115  &KBlankEffect::blankSweepDown,
116  &KBlankEffect::blankBlocks
117 };
118 
119 KBlankEffect::KBlankEffect( TQObject *parent ) : TQObject( parent )
120 {
121  d = new KBlankEffectPrivate;
122  d->currentEffect = &KBlankEffect::blankNormal;
123  d->effectProgress = 0;
124  d->timer = new TQTimer( this );
125  connect( d->timer, TQ_SIGNAL(timeout()), this, TQ_SLOT(timeout()) );
126 }
127 
128 
129 KBlankEffect::~KBlankEffect()
130 {
131  delete d;
132 }
133 
134 void KBlankEffect::finished()
135 {
136  d->timer->stop();
137  d->effectProgress = 0;
138  emit doneBlank();
139 }
140 
141 
142 void KBlankEffect::blank( TQWidget *w, Effect effect )
143 {
144  if ( !w ) {
145  emit doneBlank();
146  return;
147  }
148 
149  if ( effect == Random )
150  effect = (Effect)(kapp->random() % MaximumEffects);
151 
152  d->effectProgress = 0;
153  d->widget = w;
154  d->currentEffect = effects[ (int)effect ];
155  d->timer->start( 10 );
156 }
157 
158 void KBlankEffect::timeout()
159 {
160  (this->*d->currentEffect)();
161 }
162 
163 void KBlankEffect::blankNormal()
164 {
165  TQPainter p( d->widget );
166  p.fillRect( 0, 0, d->widget->width(), d->widget->height(), black );
167  finished();
168 }
169 
170 
171 void KBlankEffect::blankSweepRight()
172 {
173  TQPainter p( d->widget );
174  p.fillRect( d->effectProgress, 0, 50, d->widget->height(), black );
175  kapp->flushX();
176  d->effectProgress += 50;
177  if ( d->effectProgress >= d->widget->width() )
178  finished();
179 }
180 
181 
182 void KBlankEffect::blankSweepDown()
183 {
184  TQPainter p( d->widget );
185  p.fillRect( 0, d->effectProgress, d->widget->width(), 50, black );
186  kapp->flushX();
187  d->effectProgress += 50;
188  if ( d->effectProgress >= d->widget->height() )
189  finished();
190 }
191 
192 
193 void KBlankEffect::blankBlocks()
194 {
195  static int *block = 0;
196 
197  int bx = (d->widget->width()+63)/64;
198  int by = (d->widget->height()+63)/64;
199 
200  if ( !d->effectProgress ) {
201  block = new int [ bx*by ];
202 
203  for ( int i = 0; i < bx*by; i++ )
204  block[i] = i;
205  for ( int i = 0; i < bx*by; i++ ) {
206  int swap = kapp->random()%(bx*by);
207  int tmp = block[i];
208  block[i] = block[swap];
209  block[swap] = tmp;
210  }
211  }
212 
213  TQPainter p( d->widget );
214 
215  // erase a couple of blocks at a time, otherwise it looks too slow
216  for ( int i = 0; i < 2 && d->effectProgress < bx*by; i++ ) {
217  int x = block[d->effectProgress]%bx;
218  int y = block[d->effectProgress]/bx;
219  p.fillRect( x*64, y*64, 64, 64, black );
220  d->effectProgress++;
221  }
222 
223  kapp->flushX();
224 
225  if ( d->effectProgress >= bx*by ) {
226  delete[] block;
227  finished();
228  }
229 }
230 
231 #include "tdescreensaver.moc"
KBlankEffect::doneBlank
void doneBlank()
emitted when a blanking effect has completed.
KBlankEffect::blank
void blank(TQWidget *w, Effect effect=Random)
Blank a widget using the specified effect.
Definition: tdescreensaver.cpp:142
KScreenSaver::embed
void embed(TQWidget *widget)
You cannot create a new widget with this widget as parent, since this widget may not be owned by your...
Definition: tdescreensaver.cpp:80
KScreenSaver::KScreenSaver
KScreenSaver(WId id=0)
Definition: tdescreensaver.cpp:42

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