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/* 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 tdeui.
* Copyright (C) 1999,2000 Geert Jansen <[email protected]>
*
* 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 <tqwidget.h>
#include <tqtimer.h>
#include <tqrect.h>
#include <tqimage.h>
#ifndef TQ_WS_TQWS //FIXME
#include <kapplication.h>
#include <kimageeffect.h>
#include <kpixmapio.h>
#include <twinmodule.h>
#include <kdebug.h>
#include <netwm.h>
#include <dcopclient.h>
#include <tqpainter.h>
#include <ksharedpixmap.h>
#include "myrootpixmap.h"
KMyRootPixmap::KMyRootPixmap( TQWidget * widget, const char *name )
: TQObject(widget, name ? name : "KMyRootPixmap" )
{
init();
}
KMyRootPixmap::KMyRootPixmap( TQWidget *, TQObject *parent, const char *name )
: TQObject( parent, name ? name : "KMyRootPixmap" )
{
init();
}
void KMyRootPixmap::init()
{
// d = new KMyRootPixmapData;
// m_Fade = 0;
m_pPixmap = new KSharedPixmap;
// m_pTimer = new TQTimer( this );
m_bInit = false;
m_bActive = false;
m_Desk=-1;
// m_bCustomPaint = false;
// connect(kapp, TQT_SIGNAL(backgroundChanged(int)), TQT_SLOT(slotBackgroundChanged(int)));
connect(m_pPixmap, TQT_SIGNAL(done(bool)), TQT_SLOT(slotDone(bool)));
// connect(m_pTimer, TQT_SIGNAL(timeout()), TQT_SLOT(repaint()));
// d->toplevel = m_pWidget->topLevelWidget();
// d->toplevel->installEventFilter(this);
}
KMyRootPixmap::~KMyRootPixmap()
{
delete m_pPixmap;
// delete d;
}
int KMyRootPixmap::currentDesktop() const
{
NETRootInfo rinfo( tqt_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));
}
TQString KMyRootPixmap::pixmapName(int desk)
{
TQString pattern = TQString("DESKTOP%1");
int screen_number = DefaultScreen(tqt_xdisplay());
if (screen_number) {
pattern = TQString("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();
TQByteArray data;
TQDataStream args( data, IO_WriteOnly );
args << 1;
TQCString appname( "kdesktop" );
int screen_number = DefaultScreen(tqt_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);
TQPixmap *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;
TQSize desktopsize(TQApplication::desktop()->width(),TQApplication::desktop()->height());
if (px->rect().size()==desktopsize)
{ // Image has already the right dimension, make a quick update
TQImage img = io.convertToImage(*spm);
emit backgroundUpdated(&img);
return;
}else{ // we need to create a tiled pixmap and then the image to update
TQPixmap pix(desktopsize,spm->TQPixmap::depth());
TQPainter pufferPainter(&pix);
pufferPainter.drawTiledPixmap(pix.rect(),*spm);
pufferPainter.end();
TQImage img=io.convertToImage(pix);
emit backgroundUpdated(&img);
}
}
// #include "krootpixmap.moc"
#endif
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