1 files changed, 361 insertions, 0 deletions
diff --git a/kcontrol/background/KCrossBGRender.cc b/kcontrol/background/KCrossBGRender.cc
new file mode 100644
index 000000000..3158e5699
--- /dev/null
+++ b/kcontrol/background/KCrossBGRender.cc
@@ -0,0 +1,361 @@
+/*
+ * Copyright (C) 2008 Danilo Cesar Lemes de Paula <danilo@mandriva.com>
+ * Copyright (C) 2008 Gustavo Boiko <boiko@mandriva.com>
+ * Mandriva Conectiva
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License version 2 as published by the Free Software Foundation.
+ *
+ * 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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <tqdom.h>
+#include <tqfile.h>
+
+#include <kdebug.h>
+
+#include "KCrossBGRender.h"
+#include <tqapplication.h>
+#include <kimageeffect.h>
+
+
+KCrossBGRender::KCrossBGRender(int desk, int screen, bool drawBackgroundPerScreen, TDEConfig *config): KBackgroundRenderer(desk,screen,drawBackgroundPerScreen,config)
+{
+	useCrossEfect = false;
+	if ( wallpaperList()[0].endsWith("xml",false) ) {
+		initCrossFade(wallpaperList()[0]);
+	}
+}
+		
+
+void KCrossBGRender::initCrossFade(TQString xmlFile)
+{	
+	useCrossEfect = true;
+	if (xmlFile.isEmpty()){
+		useCrossEfect = false;
+		return;
+	}
+	secs = 0;
+	timeList.empty();
+
+	// read the XMLfile
+	TQDomDocument xmldoc = TQDomDocument(xmlFile);
+	TQFile file( xmlFile );
+	if ( !file.open( IO_ReadOnly ) ) {
+		useCrossEfect = false;
+		return;
+	}
+	if ( !xmldoc.setContent( &file ) ) {
+		useCrossEfect = false;
+		file.close();
+		return;
+	}
+	file.close();
+
+	TQDomElement docElem = xmldoc.documentElement();
+	TQDomNode n = docElem.firstChild();
+	while( !n.isNull() ) {
+		TQDomElement e = n.toElement(); // try to convert the node to an element.
+		if( !e.isNull() ) {
+			if (e.tagName() == "starttime") {
+				createStartTime(e);	
+			} else if (e.tagName() == "transition") {
+				createTransition(e);
+			} else if (e.tagName() == "static") {
+				createStatic(e);
+			}
+		}
+		n = n.nextSibling();
+	}
+
+	// Setting "now" state
+	setCurrentEvent(true);
+	pix = getCurrentPixmap();
+	
+	useCrossEfect = true;
+}
+
+
+KCrossBGRender::~KCrossBGRender(){
+}
+
+TQPixmap KCrossBGRender::pixmap() {
+	fixEnabled();	
+	if (!useCrossEfect){
+		TQPixmap p = KBackgroundRenderer::pixmap();
+		kdDebug() << "Inherited " << p.size() << endl;
+		if (p.width() == 0 && p.height() == 0){
+			p.convertFromImage(image());
+		}
+		return p;
+	}
+	
+	return pix;
+}
+
+bool KCrossBGRender::needWallpaperChange(){
+	if (!useCrossEfect) {
+		return KBackgroundRenderer::needWallpaperChange();
+	}
+
+	bool forceChange = setCurrentEvent();    // If we change the current state
+	if (forceChange){			 // do not matter what hapens
+		actualPhase = 0;                 // we need to change background
+		return true;
+	}
+
+	// Return false if it's not a transition
+	if (!current.transition) {
+		return false;
+	}
+
+	double timeLeft, timeTotal;
+	TQTime now = TQTime::currentTime();
+
+	timeLeft = now.secsTo(current.etime);
+	if (timeLeft < 0) {
+		timeLeft += 86400; // before midnight
+	}
+	timeTotal = current.stime.secsTo(current.etime);
+	if (timeTotal < 0) {
+		timeTotal += 86400;
+	}
+
+	double passed  = timeTotal - timeLeft;
+	double timeCell   =  timeTotal/60; //Time cell size
+
+	//kdDebug() << "\ntimeleft:" << timeLeft << " timeTotal:" << timeTotal 
+	//          << "\npassed:" << passed << " timeCell:" << timeCell
+	//	  << "\nactualPhase: " << actualPhase << endl;	
+
+	int aux = passed/timeCell;	
+	if(actualPhase != aux){
+		//kdDebug() << "needWallpaperChange() => returned true" << endl;
+		actualPhase = passed/timeCell;
+		return true;
+	}
+
+	//kdDebug() << "needWallpaperChange() => returned false" << endl;
+	return false;
+}
+
+/* 
+ * This method change the enabledEffect flag to TRUE of FALSE, according 
+ * with multiWallpaperMode and FileName (it needs to be a XML)
+ */
+void KCrossBGRender::fixEnabled(){
+
+	
+	TQString w = wallpaperList()[0];
+	useCrossEfect = false;	
+	if(multiWallpaperMode() == Random || multiWallpaperMode() == InOrder){
+		
+		if ( w != xmlFileName ){
+			// New XML File
+			xmlFileName = w;
+			if (w.endsWith("xml",false)){
+				initCrossFade(wallpaperList()[0]);
+				//useCrossEfect = true;	
+			}else{
+				// Not, it's not a xml file
+				useCrossEfect = false;
+			}
+		}else if (w.endsWith("xml",false)){
+			//xmlFile doesn't change
+			//but it's there
+			useCrossEfect = true;
+		}else{
+			// it's not a XML file
+			useCrossEfect = false;
+		}
+	}
+}
+
+void KCrossBGRender::changeWallpaper(bool init){
+
+
+
+	fixEnabled();
+
+	if (!useCrossEfect){
+		KBackgroundRenderer::changeWallpaper(init);
+		return;
+	}
+
+	pix = getCurrentPixmap();
+
+
+}
+
+
+bool KCrossBGRender::setCurrentEvent(bool init){
+	TQTime now = TQTime::currentTime();
+	
+
+	//Verify if is need to change
+	if (!(init || now <= current.stime || now >= current.etime )) {
+		return false;
+	}
+
+	TQValueList<KBGCrossEvent>::iterator it;
+	for ( it = timeList.begin(); it != timeList.end(); ++it ){
+
+		// Look for time
+		if ( ((*it).stime <= now && now <= (*it).etime) ||   //normal situation
+		     ((*it).etime <= (*it).stime && (now >= (*it).stime ||
+		     				     now <= (*it).etime) ) )	
+		{
+			current = *it;
+			actualPhase = 0;
+
+			//kdDebug() << "Cur: " << current.stime << "< now <" << current.etime << endl;
+			return true;
+		}
+	}
+}
+
+TQPixmap KCrossBGRender::getCurrentPixmap()
+{
+	float alpha;
+	TQPixmap ret;
+	TQImage tmp;
+	TQImage p1;
+	if (!tmp.load(current.pix1))
+		return TQPixmap();
+
+	// scale the pixmap to fit in the screen
+	//p1 = TQPixmap(QApplication::desktop()->screenGeometry().size());
+	//TQPainter p(&p1);
+	//p.drawPixmap(p1.rect(), tmp);
+	//
+	p1 = tmp.smoothScale(TQApplication::desktop()->screenGeometry().size());
+
+	if (current.transition){
+		TQTime now = TQTime::currentTime();
+		double timeLeft,timeTotal;
+
+		TQImage p2;
+
+		if (!tmp.load(current.pix2) )
+			return NULL;
+
+		p2 = tmp.smoothScale(TQApplication::desktop()->screenGeometry().size());
+		//TQPainter p(&p2);
+		//p.drawPixmap(p2.rect(), tmp);
+
+		timeLeft = now.secsTo(current.etime);
+		if (timeLeft < 0)
+			timeLeft += 86400;
+		timeTotal = current.stime.secsTo(current.etime);
+		if (timeTotal < 0)
+			timeTotal += 86400;
+		
+		alpha = (timeTotal - timeLeft)/timeTotal;
+
+		//ret = crossFade(p2,p1,alpha);
+		tmp = KImageEffect::blend(p2,p1,alpha);
+		ret.convertFromImage(tmp);
+		return ret;
+	}else{
+		ret.convertFromImage(p1);
+		return ret;
+	}	
+	
+
+}
+
+void KCrossBGRender::createStartTime(TQDomElement docElem)
+{	
+	int hour;
+	int minutes;
+
+	TQDomNode n = docElem.firstChild();
+	while( !n.isNull() ) {
+		TQDomElement e = n.toElement();
+		if( !e.isNull() ) {
+			if (e.tagName() == "hour"){
+				hour =  e.text().toInt();
+			}else if ( e.tagName() == "minute" ){
+				minutes = e.text().toInt();
+			}
+			
+		}
+		
+		n = n.nextSibling();
+	}
+	secs = hour*60*60 + minutes*60;
+}
+void KCrossBGRender::createTransition(TQDomElement docElem)
+{
+	int duration;
+	TQString from;
+	TQString to;
+
+	TQDomNode n = docElem.firstChild();
+	while( !n.isNull() ) {
+		TQDomElement e = n.toElement();
+		if( !e.isNull() ) {
+			if (e.tagName() == "duration"){
+				duration = e.text().toFloat();
+			}else if ( e.tagName() == "from" ){
+				from = e.text();
+			}
+			else if ( e.tagName() == "to" ){
+				to = e.text();
+			}
+			
+		}
+		n = n.nextSibling();
+	}
+	TQTime startTime(0,0,0);
+	startTime = startTime.addSecs(secs);
+	TQTime endTime(0,0,0);
+	endTime = endTime.addSecs(secs+duration);
+
+	secs += duration;
+	
+	KBGCrossEvent l = {true, from, to, startTime,endTime};
+
+	timeList.append(l);
+
+}
+void KCrossBGRender::createStatic(TQDomElement docElem)
+{	
+	int duration;
+	TQString file;
+	
+	TQDomNode n = docElem.firstChild();
+	while( !n.isNull() ) {
+		TQDomElement e = n.toElement();
+		if( !e.isNull() ) {
+			if (e.tagName() == "duration"){
+				duration = e.text().toFloat();
+			}else if ( e.tagName() == "file" ){
+				file = e.text();
+			}
+			
+		}
+		n = n.nextSibling();
+	}
+	
+	TQTime startTime(0,0,0);
+	startTime = startTime.addSecs(secs);
+	TQTime endTime(0,0,0);
+	endTime = endTime.addSecs(secs+duration);
+	
+	secs += duration;
+
+	KBGCrossEvent l = {false, file, NULL, startTime,endTime};
+	timeList.append(l);
+}
+
+#include "KCrossBGRender.moc"