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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 <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 */
/* Further modified 11/18/2014 by Timothy Pearson <kb9vqf@pearsoncomputing.net> */
#include <tqwidget.h>
#include <tqtimer.h>
#include <tqrect.h>
#include <tqimage.h>
#ifndef TQ_WS_TQWS //FIXME
#include <tdeapplication.h>
#include <kimageeffect.h>
#include <kpixmapio.h>
#include <netwm.h>
#include <twin.h>
#include <kdebug.h>
#include <netwm.h>
#include <dcopclient.h>
#include <dcopref.h>
#include <tqpainter.h>
#include <ksharedpixmap.h>
#include "myrootpixmap.h"
static TQString wallpaperForDesktop(int desktop)
{
return DCOPRef("kdesktop", "KBackgroundIface").call("currentWallpaper", desktop);
}
DesktopWallpaperWatcher::DesktopWallpaperWatcher() : TQWidget(), m_old_current_desktop(-1)
{
kapp->installX11EventFilter( this );
(void ) kapp->desktop(); //trigger desktop widget creation to select root window events
}
DesktopWallpaperWatcher::~DesktopWallpaperWatcher()
{
}
bool DesktopWallpaperWatcher::x11Event( XEvent * ev )
{
if ( ev->xany.window == tqt_xrootwin() ) {
NETRootInfo rinfo( tqt_xdisplay(), NET::CurrentDesktop );
rinfo.activate();
if ( rinfo.currentDesktop() != m_old_current_desktop ) {
emit currentDesktopChanged( rinfo.currentDesktop() );
}
m_old_current_desktop = rinfo.currentDesktop();
}
return false;
}
class KMyRootPixmapData
{
public:
#ifdef Q_WS_X11
DesktopWallpaperWatcher *twin;
#endif
};
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 TDESharedPixmap;
// 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()));
#ifdef Q_WS_X11
d->twin = new DesktopWallpaperWatcher();
connect(d->twin, TQT_SIGNAL(currentDesktopChanged(int)), TQT_SLOT(desktopChanged(int)));
#endif
// d->toplevel = m_pWidget->topLevelWidget();
// d->toplevel->installEventFilter(this);
}
KMyRootPixmap::~KMyRootPixmap()
{
delete m_pPixmap;
delete d;
}
void KMyRootPixmap::desktopChanged(int desktop)
{
if (wallpaperForDesktop(m_Desk) == wallpaperForDesktop(desktop) &&
!wallpaperForDesktop(m_Desk).isNull())
return;
// #ifdef Q_WS_X11
// if (KWin::windowInfo(m_pWidget->topLevelWidget()->winId()).desktop() == NET::OnAllDesktops &&
// pixmapName(m_Desk) != pixmapName(desktop))
// #endif
repaint(true);
}
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{
// TDESharedPixmap 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( TDESharedPixmap *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 "myrootpixmap.moc"
#endif
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