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259 lines
6.2 KiB
259 lines
6.2 KiB
1 month ago
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/*
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*
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* $Id: krootpixmap.cpp,v 1.20 2003/06/01 01:49:31 hadacek Exp $
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*
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* This file is part of the KDE project, module tdeui.
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* Copyright (C) 1999,2000 Geert Jansen <jansen@kde.org>
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*
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* You can Freely distribute this program under the GNU Library
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* General Public License. See the file "COPYING.LIB" for the exact
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* licensing terms.
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*/
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/* Modified by Sascha Hlusiak */
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/* Further modified 11/18/2014 by Timothy Pearson <kb9vqf@pearsoncomputing.net> */
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#include <tqwidget.h>
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#include <tqtimer.h>
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#include <tqrect.h>
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#include <tqimage.h>
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#ifndef TQ_WS_TQWS //FIXME
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#include <tdeapplication.h>
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#include <kimageeffect.h>
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#include <kpixmapio.h>
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#include <netwm.h>
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#include <twin.h>
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#include <kdebug.h>
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#include <netwm.h>
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#include <dcopclient.h>
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#include <dcopref.h>
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#include <tqpainter.h>
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#include <ksharedpixmap.h>
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#include "myrootpixmap.h"
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static TQString wallpaperForDesktop(int desktop)
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{
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return DCOPRef("kdesktop", "KBackgroundIface").call("currentWallpaper", desktop);
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}
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DesktopWallpaperWatcher::DesktopWallpaperWatcher() : TQWidget(), m_old_current_desktop(-1)
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{
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kapp->installX11EventFilter( this );
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(void ) kapp->desktop(); //trigger desktop widget creation to select root window events
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}
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DesktopWallpaperWatcher::~DesktopWallpaperWatcher()
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{
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}
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bool DesktopWallpaperWatcher::x11Event( XEvent * ev )
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{
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if ( ev->xany.window == tqt_xrootwin() ) {
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NETRootInfo rinfo( tqt_xdisplay(), NET::CurrentDesktop );
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rinfo.activate();
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if ( rinfo.currentDesktop() != m_old_current_desktop ) {
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emit currentDesktopChanged( rinfo.currentDesktop() );
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}
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m_old_current_desktop = rinfo.currentDesktop();
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}
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return false;
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}
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class KMyRootPixmapData
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{
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public:
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#ifdef TQ_WS_X11
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DesktopWallpaperWatcher *twin;
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#endif
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};
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KMyRootPixmap::KMyRootPixmap( TQWidget * widget, const char *name )
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: TQObject(widget, name ? name : "KMyRootPixmap" )
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{
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init();
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}
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KMyRootPixmap::KMyRootPixmap( TQWidget *, TQObject *parent, const char *name )
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: TQObject( parent, name ? name : "KMyRootPixmap" )
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{
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init();
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}
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void KMyRootPixmap::init()
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{
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d = new KMyRootPixmapData;
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// m_Fade = 0;
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m_pPixmap = new TDESharedPixmap;
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// m_pTimer = new TQTimer( this );
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m_bInit = false;
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m_bActive = false;
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m_Desk=-1;
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// m_bCustomPaint = false;
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// connect(kapp, TQ_SIGNAL(backgroundChanged(int)), TQ_SLOT(slotBackgroundChanged(int)));
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connect(m_pPixmap, TQ_SIGNAL(done(bool)), TQ_SLOT(slotDone(bool)));
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// connect(m_pTimer, TQ_SIGNAL(timeout()), TQ_SLOT(repaint()));
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#ifdef TQ_WS_X11
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d->twin = new DesktopWallpaperWatcher();
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connect(d->twin, TQ_SIGNAL(currentDesktopChanged(int)), TQ_SLOT(desktopChanged(int)));
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#endif
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// d->toplevel = m_pWidget->topLevelWidget();
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// d->toplevel->installEventFilter(this);
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}
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KMyRootPixmap::~KMyRootPixmap()
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{
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delete m_pPixmap;
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delete d;
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}
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void KMyRootPixmap::desktopChanged(int desktop)
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{
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if (wallpaperForDesktop(m_Desk) == wallpaperForDesktop(desktop) &&
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!wallpaperForDesktop(m_Desk).isNull())
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return;
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// #ifdef TQ_WS_X11
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// if (KWin::windowInfo(m_pWidget->topLevelWidget()->winId()).desktop() == NET::OnAllDesktops &&
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// pixmapName(m_Desk) != pixmapName(desktop))
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// #endif
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repaint(true);
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}
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int KMyRootPixmap::currentDesktop() const
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{
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NETRootInfo rinfo( tqt_xdisplay(), NET::CurrentDesktop );
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rinfo.activate();
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return rinfo.currentDesktop();
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}
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void KMyRootPixmap::start()
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{
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if (m_bActive)
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return;
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m_bActive = true;
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enableExports();
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return;
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// if (m_bInit)
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// repaint(true);
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}
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void KMyRootPixmap::stop()
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{
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m_bActive = false;
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// m_pTimer->stop();
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}
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void KMyRootPixmap::repaint()
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{
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repaint(false);
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}
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void KMyRootPixmap::repaint(bool force)
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{
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// printf("KMyRootPixmap::repaint(%s)\n",force?"true":"false");
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if ((!force) && (m_Desk==currentDesktop()))return;
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m_Desk = currentDesktop();
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if (!isAvailable())
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{
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emit backgroundUpdated(NULL);
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}else{
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// TDESharedPixmap will correctly generate a tile for us.
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m_pPixmap->loadFromShared(pixmapName(m_Desk));
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updateBackground( m_pPixmap );
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}
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}
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bool KMyRootPixmap::isAvailable()
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{
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return m_pPixmap->isAvailable(pixmapName(m_Desk));
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}
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TQString KMyRootPixmap::pixmapName(int desk)
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{
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TQString pattern = TQString("DESKTOP%1");
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int screen_number = DefaultScreen(tqt_xdisplay());
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if (screen_number) {
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pattern = TQString("SCREEN%1-DESKTOP").arg(screen_number) + "%1";
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}
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return pattern.arg( desk );
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}
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void KMyRootPixmap::enableExports()
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{
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// kdDebug(270) << k_lineinfo << "activating background exports.\n";
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DCOPClient *client = kapp->dcopClient();
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if (!client->isAttached())
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client->attach();
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TQByteArray data;
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TQDataStream args( data, IO_WriteOnly );
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args << 1;
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TQCString appname( "kdesktop" );
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int screen_number = DefaultScreen(tqt_xdisplay());
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if ( screen_number )
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appname.sprintf("kdesktop-screen-%d", screen_number );
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client->send( appname, "KBackgroundIface", "setExport(int)", data );
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}
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void KMyRootPixmap::slotDone(bool success)
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{
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if (!success)
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{
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// kdWarning(270) << k_lineinfo << "loading of desktop background failed.\n";
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return;
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}
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// We need to test active as the pixmap might become available
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// after the widget has been destroyed.
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if ( m_bActive )
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updateBackground( m_pPixmap );
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}
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void KMyRootPixmap::updateBackground( TDESharedPixmap *spm )
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{
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// printf("KMyRootPixmap::updateBackground(%p)\n",spm);
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TQPixmap *px=spm;
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if (px->isNull() || px->width()==0 || px->height()==0)
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{ // This is NOT an image, something went wrong, update to plain
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emit backgroundUpdated(NULL);
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return;
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}
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KPixmapIO io;
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TQSize desktopsize(TQApplication::desktop()->width(),TQApplication::desktop()->height());
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if (px->rect().size()==desktopsize)
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{ // Image has already the right dimension, make a quick update
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TQImage img = io.convertToImage(*spm);
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emit backgroundUpdated(&img);
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return;
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}else{ // we need to create a tiled pixmap and then the image to update
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TQPixmap pix(desktopsize,spm->TQPixmap::depth());
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TQPainter pufferPainter(&pix);
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pufferPainter.drawTiledPixmap(pix.rect(),*spm);
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pufferPainter.end();
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TQImage img=io.convertToImage(pix);
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emit backgroundUpdated(&img);
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}
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}
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#include "myrootpixmap.moc"
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#endif
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