Added KDE3 version of kwin Crystal style

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/kwin-style-crystal@1095345 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 200 insertions, 0 deletions

diff --git a/client/myrootpixmap.cc b/client/myrootpixmap.cc
new file mode 100644
index 0000000..9412256
--- /dev/null
+++ b/client/myrootpixmap.cc
@@ -0,0 +1,200 @@
+/* vi: ts=8 sts=4 sw=4
+ *
+ * $Id: krootpixmap.cpp,v 1.20 2003/06/01 01:49:31 hadacek Exp $
+ *
+ * This file is part of the KDE project, module kdeui.
+ * Copyright (C) 1999,2000 Geert Jansen <jansen@kde.org>
+ *
+ * You can Freely distribute this program under the GNU Library
+ * General Public License. See the file "COPYING.LIB" for the exact
+ * licensing terms.
+ */
+ 
+/* Modified by Sascha Hlusiak */
+
+#include <qwidget.h>
+#include <qtimer.h>
+#include <qrect.h>
+#include <qimage.h>
+
+#ifndef Q_WS_QWS //FIXME
+#include <kapplication.h>
+#include <kimageeffect.h>
+#include <kpixmapio.h>
+#include <kwinmodule.h>
+#include <kdebug.h>
+#include <netwm.h>
+#include <dcopclient.h>
+#include <qpainter.h>
+
+#include <ksharedpixmap.h>
+#include "myrootpixmap.h"
+
+
+
+KMyRootPixmap::KMyRootPixmap( QWidget * widget, const char *name )
+    : QObject(widget, name ? name : "KMyRootPixmap" ) 
+{
+    init();
+}
+
+KMyRootPixmap::KMyRootPixmap( QWidget *, QObject *parent, const char *name )
+    : QObject( parent, name ? name : "KMyRootPixmap" ) 
+{
+    init();
+}
+
+void KMyRootPixmap::init()
+{
+//    d = new KMyRootPixmapData;
+//    m_Fade = 0;
+    m_pPixmap = new KSharedPixmap;
+//    m_pTimer = new QTimer( this );
+    m_bInit = false;
+    m_bActive = false;
+    m_Desk=-1;
+//    m_bCustomPaint = false;
+
+//    connect(kapp, SIGNAL(backgroundChanged(int)), SLOT(slotBackgroundChanged(int)));
+    connect(m_pPixmap, SIGNAL(done(bool)), SLOT(slotDone(bool)));
+//    connect(m_pTimer, SIGNAL(timeout()), SLOT(repaint()));
+
+//    d->toplevel = m_pWidget->topLevelWidget();
+//    d->toplevel->installEventFilter(this);
+}
+
+KMyRootPixmap::~KMyRootPixmap()
+{
+    delete m_pPixmap;
+//    delete d;
+}
+
+int KMyRootPixmap::currentDesktop() const
+{
+    NETRootInfo rinfo( qt_xdisplay(), NET::CurrentDesktop );
+    rinfo.activate();
+    return rinfo.currentDesktop();
+}
+
+void KMyRootPixmap::start()
+{
+    if (m_bActive)
+    return;
+
+    m_bActive = true;
+    enableExports();
+    return;
+//    if (m_bInit)
+//    repaint(true);
+}
+
+void KMyRootPixmap::stop()
+{
+    m_bActive = false;
+//    m_pTimer->stop();
+}
+
+
+void KMyRootPixmap::repaint()
+{
+    repaint(false);
+}
+
+void KMyRootPixmap::repaint(bool force)
+{
+//	printf("KMyRootPixmap::repaint(%s)\n",force?"true":"false");
+    if ((!force) && (m_Desk==currentDesktop()))return;
+    
+    m_Desk = currentDesktop();
+
+    if (!isAvailable())
+    {
+    	emit backgroundUpdated(NULL);
+    }else{
+    	// KSharedPixmap will correctly generate a tile for us.
+    	m_pPixmap->loadFromShared(pixmapName(m_Desk));
+    	updateBackground( m_pPixmap );
+    }
+}
+
+bool KMyRootPixmap::isAvailable() 
+{
+    return m_pPixmap->isAvailable(pixmapName(m_Desk));
+}
+
+QString KMyRootPixmap::pixmapName(int desk) 
+{
+    QString pattern = QString("DESKTOP%1");
+    int screen_number = DefaultScreen(qt_xdisplay());
+    if (screen_number) {
+        pattern = QString("SCREEN%1-DESKTOP").arg(screen_number) + "%1";
+    }
+    return pattern.arg( desk );
+}
+
+
+void KMyRootPixmap::enableExports()
+{
+//    kdDebug(270) << k_lineinfo << "activating background exports.\n";
+    DCOPClient *client = kapp->dcopClient();
+    if (!client->isAttached())
+    client->attach();
+    QByteArray data;
+    QDataStream args( data, IO_WriteOnly );
+    args << 1;
+
+    QCString appname( "kdesktop" );
+    int screen_number = DefaultScreen(qt_xdisplay());
+    if ( screen_number )
+        appname.sprintf("kdesktop-screen-%d", screen_number );
+
+    client->send( appname, "KBackgroundIface", "setExport(int)", data );
+}
+
+
+void KMyRootPixmap::slotDone(bool success)
+{
+    if (!success)
+    {
+//    	kdWarning(270) << k_lineinfo << "loading of desktop background failed.\n";
+    	return;
+    }
+
+    // We need to test active as the pixmap might become available
+    // after the widget has been destroyed.
+    if ( m_bActive )
+    updateBackground( m_pPixmap );
+}
+
+void KMyRootPixmap::updateBackground( KSharedPixmap *spm )
+{
+//	printf("KMyRootPixmap::updateBackground(%p)\n",spm);
+    QPixmap *px=spm;
+    if (px->isNull() || px->width()==0 || px->height()==0) 
+    {	// This is NOT an image, something went wrong, update to plain
+    	emit backgroundUpdated(NULL);
+	return;
+    }
+    KPixmapIO io;
+    QSize desktopsize(QApplication::desktop()->width(),QApplication::desktop()->height());
+    
+    if (px->rect().size()==desktopsize)
+    {	// Image has already the right dimension, make a quick update
+    	QImage img = io.convertToImage(*spm);
+    	emit backgroundUpdated(&img);
+	return;  
+    }else{	// we need to create a tiled pixmap and then the image to update
+    	QPixmap pix(desktopsize,spm->depth());
+    	QPainter pufferPainter(&pix);
+    
+    	pufferPainter.drawTiledPixmap(pix.rect(),*spm);
+    
+    	pufferPainter.end();
+    
+    	QImage img=io.convertToImage(pix);
+    	emit backgroundUpdated(&img);
+    }
+}
+
+// #include "krootpixmap.moc"
+#endif