Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdelibs@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 229 insertions, 0 deletions

diff --git a/libkscreensaver/kscreensaver.cpp b/libkscreensaver/kscreensaver.cpp
new file mode 100644
index 000000000..f56b31dc9
--- /dev/null
+++ b/libkscreensaver/kscreensaver.cpp
@@ -0,0 +1,229 @@
+/* This file is part of the KDE libraries
+
+    Copyright (c) 2001  Martin R. Jones <mjones@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.
+
+    This library 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
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public License
+    along with this library; see the file COPYING.LIB.  If not, write to
+    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+    Boston, MA 02110-1301, USA.
+*/
+
+#include <qpainter.h>
+#include <qtimer.h>
+#include <kapplication.h>
+#include "kscreensaver.h"
+#ifdef Q_WS_X11
+#include <X11/Xlib.h>
+#else
+typedef WId Window;
+#endif
+
+#undef KeyPress
+#undef KeyRelease
+
+//-----------------------------------------------------------------------------
+
+class KScreenSaverPrivate
+{
+public:
+    QWidget *owner;
+};
+
+KScreenSaver::KScreenSaver( WId id ) : QWidget()
+{
+    Window root;
+    int ai;
+    unsigned int au;
+    unsigned int w = 0;
+    unsigned int h = 0;
+
+    d = new KScreenSaverPrivate;
+    d->owner = find( id );
+    if ( d->owner )
+	installEventFilter( this );
+
+    if ( id )
+    {
+#ifdef Q_WS_X11 //FIXME
+        XGetGeometry(qt_xdisplay(), (Drawable)id, &root, &ai, &ai,
+            &w, &h, &au, &au); 
+#endif
+
+        create( id, false, true );
+    }
+
+    if ( w == 0 ) w = 600;
+    if ( h == 0 ) h = 420;
+    resize( w, h );
+    KApplication::sendPostedEvents();
+    show();
+}
+
+KScreenSaver::~KScreenSaver()
+{
+    destroy( false, false );
+    delete d;
+}
+
+void KScreenSaver::embed( QWidget *w )
+{
+    KApplication::sendPostedEvents();
+#ifdef Q_WS_X11 //FIXME
+    XReparentWindow(qt_xdisplay(), w->winId(), winId(), 0, 0);
+#endif
+    w->setGeometry( 0, 0, width(), height() );
+    KApplication::sendPostedEvents();
+}
+
+bool KScreenSaver::eventFilter( QObject *o, QEvent *e )
+{
+    // make sure events get to the original window owner
+    if ( d->owner && o == this ) {
+	QApplication::sendEvent( d->owner, e );
+	return false;
+    }
+
+    return QWidget::eventFilter( o, e );
+}
+
+//============================================================================
+
+class KBlankEffectPrivate
+{
+public:
+    KBlankEffect::BlankEffect currentEffect;
+    int effectProgress;
+    QTimer *timer;
+    QWidget *widget;
+};
+
+KBlankEffect::BlankEffect KBlankEffect::effects[] = {
+    &KBlankEffect::blankNormal,
+    &KBlankEffect::blankSweepRight,
+    &KBlankEffect::blankSweepDown,
+    &KBlankEffect::blankBlocks
+};
+
+KBlankEffect::KBlankEffect( QObject *parent ) : QObject( parent )
+{
+    d = new KBlankEffectPrivate;
+    d->currentEffect = &KBlankEffect::blankNormal;
+    d->effectProgress = 0;
+    d->timer = new QTimer( this );
+    connect( d->timer, SIGNAL(timeout()), this, SLOT(timeout()) );
+}
+
+
+KBlankEffect::~KBlankEffect()
+{
+    delete d;
+}
+
+void KBlankEffect::finished()
+{
+    d->timer->stop();
+    d->effectProgress = 0;
+    emit doneBlank();
+}
+
+
+void KBlankEffect::blank( QWidget *w, Effect effect )
+{
+    if ( !w ) {
+        emit doneBlank();
+        return;
+    }
+
+    if ( effect == Random )
+        effect = (Effect)(kapp->random() % MaximumEffects);
+
+    d->effectProgress = 0;
+    d->widget = w;
+    d->currentEffect = effects[ (int)effect ];
+    d->timer->start( 10 );
+}
+
+void KBlankEffect::timeout()
+{
+    (this->*d->currentEffect)();
+}
+
+void KBlankEffect::blankNormal()
+{
+    QPainter p( d->widget );
+    p.fillRect( 0, 0, d->widget->width(), d->widget->height(), black );
+    finished();
+}
+
+
+void KBlankEffect::blankSweepRight()
+{
+    QPainter p( d->widget );
+    p.fillRect( d->effectProgress, 0, 50, d->widget->height(), black );
+    kapp->flushX();
+    d->effectProgress += 50;
+    if ( d->effectProgress >= d->widget->width() )
+        finished();
+}
+
+
+void KBlankEffect::blankSweepDown()
+{
+    QPainter p( d->widget );
+    p.fillRect( 0, d->effectProgress, d->widget->width(), 50, black );
+    kapp->flushX();
+    d->effectProgress += 50;
+    if ( d->effectProgress >= d->widget->height() )
+        finished();
+}
+
+
+void KBlankEffect::blankBlocks()
+{
+    static int *block = 0;
+
+    int bx = (d->widget->width()+63)/64;
+    int by = (d->widget->height()+63)/64;
+
+    if ( !d->effectProgress ) {
+        block = new int [ bx*by ];
+
+        for ( int i = 0; i < bx*by; i++ )
+            block[i] = i;
+        for ( int i = 0; i < bx*by; i++ ) {
+            int swap = kapp->random()%(bx*by);
+            int tmp = block[i];
+            block[i] = block[swap];
+            block[swap] = tmp;
+        }
+    }
+
+    QPainter p( d->widget );
+
+    // erase a couple of blocks at a time, otherwise it looks too slow
+    for ( int i = 0; i < 2 && d->effectProgress < bx*by; i++ ) {
+        int x = block[d->effectProgress]%bx;
+        int y = block[d->effectProgress]/bx;
+        p.fillRect( x*64, y*64, 64, 64, black );
+        d->effectProgress++;
+    }
+
+    kapp->flushX();
+
+    if ( d->effectProgress >= bx*by ) {
+        delete[] block;
+        finished();
+    }
+}
+
+#include "kscreensaver.moc"