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Hey everyone,

I fixed some problems with this patch and unless someones says "screw=20
you hippie" I'm going to commit the "transparent panel" patch. I fixed=20
the problem with the panel buttons not being transparent. So, what's=20
transparent:
=2D the panel itself,
=2D all panel buttons,
what's not transparent
=2D tasklist,
=2D clock,
=2D applets.
Neither of the last three (maybe with the exception of the tasklist, on=20
which I'm going to hack a little) is going to become transparent=20
(unless _real_ transparency gets into XFree86 ). If you feel like=20
testing it, patch your kdebase with the attached patch, or look at the=20
screenshots below and drool/flame on/read another post.
http://vortex.bd.psu.edu/~mus11/img/kicker2.png
http://vortex.bd.psu.edu/~mus11/img/kicker3.png
http://vortex.bd.psu.edu/~mus11/img/kicker1.png

Zack Rusin

=2D-=20
"I get to go to lots of overseas places, like Canada." - Britney
Spears=20

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? transparent.diff
? kate/app/dummy_kate.cpp
? kate/app/dummy_kate_la.cpp
? kate/app/dummy_kwrite.cpp
? kcontrol/kded/Makefile
? kcontrol/kicker/lookandfeeltab.ui.h
? kcontrol/kicker/semantic.cache
? kcontrol/konqhtml/nsconfigwidget.cpp
? kcontrol/konqhtml/nsconfigwidget.h
? kdm/kfrontend/krootimage
? kicker/dummy_la.cpp
? kicker/buttons/semantic.cache
? kicker/core/semantic.cache
? nsplugins/control/Makefile
? nsplugins/control/Makefile.in
? nsplugins/control/configwidget.cpp
? nsplugins/control/configwidget.h
Index: kcontrol/kicker/lookandfeeltab.ui
===================================================================
RCS file: /home/kde/kdebase/kcontrol/kicker/lookandfeeltab.ui,v
retrieving revision 1.16
diff -u -3 -p -r1.16 lookandfeeltab.ui
--- kcontrol/kicker/lookandfeeltab.ui	2002/05/12 23:30:31	1.16
+++ kcontrol/kicker/lookandfeeltab.ui	2002/07/23 22:06:45
@@ -8,8 +8,8 @@
         <rect>
             <x>0</x>
             <y>0</y>
-            <width>441</width>
-            <height>360</height>
+            <width>547</width>
+            <height>528</height>
         </rect>
     </property>
     <property name="caption">
@@ -344,7 +344,18 @@
                 <property name="spacing">
                     <number>6</number>
                 </property>
-                <widget class="QLabel" row="0" column="1" rowspan="2" colspan="1">
+                <widget class="QCheckBox" row="0" column="0">
+                    <property name="name">
+                        <cstring>m_backgroundImage</cstring>
+                    </property>
+                    <property name="text">
+                        <string>Enable &amp;background image</string>
+                    </property>
+                    <property name="whatsThis" stdset="0">
+                        <string>If this option is selected, you can choose a background image that will be displayed on the panel. If it is not selected, the default colors will be used, see the 'Colors' control module.</string>
+                    </property>
+                </widget>
+                <widget class="QLabel" row="2" column="1">
                     <property name="name">
                         <cstring>m_backgroundLabel</cstring>
                     </property>
@@ -390,19 +401,8 @@
                     <property name="whatsThis" stdset="0">
                         <string>This is a preview for the selected background image.</string>
                     </property>
-                </widget>
-                <widget class="QCheckBox" row="0" column="0">
-                    <property name="name">
-                        <cstring>m_backgroundImage</cstring>
-                    </property>
-                    <property name="text">
-                        <string>Enable &amp;background image</string>
-                    </property>
-                    <property name="whatsThis" stdset="0">
-                        <string>If this option is selected, you can choose a background image that will be displayed on the panel. If it is not selected, the default colors will be used, see the 'Colors' control module.</string>
-                    </property>
                 </widget>
-                <widget class="KURLRequester" row="1" column="0">
+                <widget class="KURLRequester" row="2" column="0">
                     <property name="name">
                         <cstring>m_backgroundInput</cstring>
                     </property>
@@ -421,6 +421,17 @@
                         <string>Here you can choose a theme to be displayed by the panel. Press the 'Browse' button to choose a theme using the file dialog.&lt;p&gt; This option is only active if 'Enable background image' is selected.</string>
                     </property>
                 </widget>
+                <widget class="QCheckBox" row="1" column="0">
+                    <property name="name">
+                        <cstring>m_transparent</cstring>
+                    </property>
+                    <property name="enabled">
+                        <bool>false</bool>
+                    </property>
+                    <property name="text">
+                        <string>Make the panel transparent</string>
+                    </property>
+                </widget>
             </grid>
         </widget>
         <spacer>
@@ -455,6 +466,24 @@
         <receiver>m_backgroundInput</receiver>
         <slot>setEnabled(bool)</slot>
     </connection>
+    <connection>
+        <sender>m_backgroundImage</sender>
+        <signal>toggled(bool)</signal>
+        <receiver>m_transparent</receiver>
+        <slot>setEnabled(bool)</slot>
+    </connection>
+    <connection>
+        <sender>m_transparent</sender>
+        <signal>toggled(bool)</signal>
+        <receiver>m_backgroundInput</receiver>
+        <slot>setDisabled(bool)</slot>
+    </connection>
+    <connection>
+        <sender>m_transparent</sender>
+        <signal>toggled(bool)</signal>
+        <receiver>m_backgroundLabel</receiver>
+        <slot>setDisabled(bool)</slot>
+    </connection>
 </connections>
 <tabstops>
     <tabstop>m_zoom_cb</tabstop>
@@ -470,6 +499,7 @@
 </tabstops>
 <includes>
     <include location="global" impldecl="in declaration">kurlrequester.h</include>
+    <include location="local" impldecl="in implementation">lookandfeeltab.ui.h</include>
 </includes>
 <layoutdefaults spacing="6" margin="11"/>
 </UI>
Index: kcontrol/kicker/lookandfeeltab_impl.cpp
===================================================================
RCS file: /home/kde/kdebase/kcontrol/kicker/lookandfeeltab_impl.cpp,v
retrieving revision 1.28
diff -u -3 -p -r1.28 lookandfeeltab_impl.cpp
--- kcontrol/kicker/lookandfeeltab_impl.cpp	2002/07/20 16:17:53	1.28
+++ kcontrol/kicker/lookandfeeltab_impl.cpp	2002/07/23 22:06:45
@@ -56,7 +56,7 @@ LookAndFeelTab::LookAndFeelTab( QWidget 
 {
   connect(m_zoom_cb, SIGNAL(clicked()), SIGNAL(changed()));
   connect(m_showToolTips, SIGNAL(clicked()), SIGNAL(changed()));
-  
+
   connect(m_kmenuTile, SIGNAL(activated(int)), SIGNAL(changed()));
   connect(m_desktopTile, SIGNAL(activated(int)), SIGNAL(changed()));
   connect(m_browserTile, SIGNAL(activated(int)), SIGNAL(changed()));
@@ -65,6 +65,7 @@ LookAndFeelTab::LookAndFeelTab( QWidget 
   connect(m_wlTile, SIGNAL(activated(int)), SIGNAL(changed()));
 
   connect(m_backgroundImage, SIGNAL(clicked()), SIGNAL(changed()));
+  connect(m_transparent, SIGNAL(clicked()), SIGNAL(changed()));
 
   m_backgroundInput->fileDialog()->setFilter(KImageIO::pattern(KImageIO::Reading));
   m_backgroundInput->fileDialog()->setCaption(i18n("Select an Image File"));
@@ -102,7 +103,7 @@ int LookAndFeelTab::findComboEntry(QComb
 {
     int index = 0;
 
-    for (int i = 0; i < combo->count(); i++) 
+    for (int i = 0; i < combo->count(); i++)
     {
       if (searchFor == combo->text(i))
       {
@@ -128,9 +129,12 @@ void LookAndFeelTab::load()
   bool use_theme = c.readBoolEntry("UseBackgroundTheme", false);
   theme = c.readEntry("BackgroundTheme", QString::null).stripWhiteSpace();
 
+  bool transparent = c.readBoolEntry("Transparent", false);
+
   m_backgroundImage->setChecked(use_theme);
-  m_backgroundInput->setEnabled(use_theme);
-  m_backgroundLabel->setEnabled(use_theme);
+  m_transparent->setChecked(transparent);
+  m_backgroundInput->setEnabled((transparent)?false:use_theme);
+  m_backgroundLabel->setEnabled((transparent)?false:use_theme);
 
   if (theme.length() > 0)
   {
@@ -259,6 +263,7 @@ void LookAndFeelTab::save()
 
   c.setGroup("General");
   c.writeEntry("UseBackgroundTheme", m_backgroundImage->isChecked());
+  c.writeEntry("Transparent", m_transparent->isChecked());
   c.writeEntry("BackgroundTheme", theme);
   c.writeEntry( "ShowToolTips", m_showToolTips->isChecked() );
   c.writeEntry( "FadeOutAppletHandles", m_fadeOutAppletHandles );
@@ -274,7 +279,7 @@ void LookAndFeelTab::save()
   }
   else
   {
-    c.writeEntry("EnableKMenuTiles", false);  
+    c.writeEntry("EnableKMenuTiles", false);
   }
 
   tile = m_desktopTile->currentItem();
@@ -286,9 +291,9 @@ void LookAndFeelTab::save()
   }
   else
   {
-    c.writeEntry("EnableDesktopButtonTiles", false);  
+    c.writeEntry("EnableDesktopButtonTiles", false);
   }
-  
+
   tile = m_urlTile->currentItem();
   if (tile > 0)
   {
@@ -298,7 +303,7 @@ void LookAndFeelTab::save()
   }
   else
   {
-    c.writeEntry("EnableURLTiles", false);  
+    c.writeEntry("EnableURLTiles", false);
   }
 
   tile = m_browserTile->currentItem();
@@ -322,7 +327,7 @@ void LookAndFeelTab::save()
   }
   else
   {
-    c.writeEntry("EnableExeTiles", false);  
+    c.writeEntry("EnableExeTiles", false);
   }
 
   tile = m_wlTile->currentItem();
@@ -334,13 +339,13 @@ void LookAndFeelTab::save()
   }
   else
   {
-    c.writeEntry("EnableWindowListTiles", false);  
+    c.writeEntry("EnableWindowListTiles", false);
   }
 
   c.setGroup("buttons");
   c.writeEntry("EnableTileBackground", enableTiles);
   c.writeEntry("EnableIconZoom", m_zoom_cb->isChecked());
-  
+
   c.sync();
 }
 
@@ -359,6 +364,7 @@ void LookAndFeelTab::defaults()
   theme = QString::null;
 
   m_backgroundImage->setChecked(false);
+  m_transparent->setChecked(false);
   m_backgroundInput->lineEdit()->setText(theme);
   m_backgroundLabel->clear();
 
@@ -398,13 +404,13 @@ void LookAndFeelTab::fillTileCombos()
     m_browserTile->insertItem(pix, tile);
     m_exeTile->insertItem(pix, tile);
     m_wlTile->insertItem(pix, tile);
-    
-    if (pix.height() > minHeight)    
+
+    if (pix.height() > minHeight)
     {
         minHeight = pix.height();
     }
   }
-  
+
   minHeight += 6;
   m_kmenuTile->setMinimumHeight(minHeight);
   m_desktopTile->setMinimumHeight(minHeight);
Index: kicker/buttons/panelbuttonbase.cpp
===================================================================
RCS file: /home/kde/kdebase/kicker/buttons/panelbuttonbase.cpp,v
retrieving revision 1.17
diff -u -3 -p -r1.17 panelbuttonbase.cpp
--- kicker/buttons/panelbuttonbase.cpp	2002/05/25 02:15:57	1.17
+++ kicker/buttons/panelbuttonbase.cpp	2002/07/23 22:06:48
@@ -40,6 +40,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE 
 #include <kipc.h>
 
 #include "kicker.h"
+#include "containerarea.h"
 #include "panel.h"
 
 #include "panelbuttonbase.h"
@@ -76,11 +77,11 @@ void ZoomButton::reconfigure()
 
 void ZoomButton::updateIcon()
 {
-    if ( watch ) 
+    if ( watch )
     {
         _icon = watch->zoomIcon();
         update();
-    }	
+    }
 }
 
 bool ZoomButton::isWatching( PanelButtonBase* btn )
@@ -93,7 +94,7 @@ void ZoomButton::watchMe( PanelButtonBas
     PanelButtonBase* watch_old = watch;
     watch = btn;
     _icon = watch->zoomIcon();
-    if ( watch_old ) 
+    if ( watch_old )
     {
 	watch_old->repaint();
 	disconnect(watch_old,0, this,0);
@@ -240,14 +241,14 @@ bool ZoomButton::eventFilter( QObject *o
     return FALSE;
 }
 
-void ZoomButton::unFocus() 
+void ZoomButton::unFocus()
 {
     hide();
     if (watch) {
 	PanelButtonBase* tmp = watch;
         watch = 0;
 	tmp->update();
-    }	
+    }
     lower();
     setEnabled(false);
 }
@@ -382,6 +383,7 @@ void PanelButtonBase::setBackground()
 {
     KConfig* config = KGlobal::config();
     config->setGroup("General");
+
     if (config->readBoolEntry("UseBackgroundTheme", false))
     {
 	// Get the pixmap from the container area object
@@ -424,7 +426,6 @@ void PanelButtonBase::setBackground()
 	    else
 	    {
 		// Need to do 2 seperate bitBlts to take care of the overlap
-
 		// Copy the left/top of the image first up to the wrap-
 		// around point
 		int x = 0;
@@ -479,9 +480,9 @@ void PanelButtonBase::resizeEvent(QResiz
 
 void PanelButtonBase::setZoomEnabled(bool b)
 {
-    if (!zoomButton) 
+    if (!zoomButton)
         zoomButton = new ZoomButton();
-    
+
     if (!b)
       zoomDisabled++;
     else
@@ -490,7 +491,7 @@ void PanelButtonBase::setZoomEnabled(boo
     if (zoomDisabled)
     {
         zoomButton->unFocus();
-    } 
+    }
 }
 
 void PanelButtonBase::enterEvent(QEvent* e)
@@ -604,13 +605,27 @@ void PanelButtonBase::drawButton(QPainte
     QPixmap bg(size());
     QPainter pbg;
     pbg.begin(&bg);
-
     // Draw the background. This is always needed, even when using tiles,
     // because they don't have to cover the entire button.
-    if ( !_bg.isNull() )
+    if ( !_bg.isNull() ) {
 	pbg.drawPixmap( 0, 0, _bg );
-    else
-	pbg.fillRect(rect(), colorGroup().brush(QColorGroup::Background));
+    }
+    else {
+        QPixmap *pm =  colorGroup().brush( QColorGroup::Background).pixmap();
+        if ( pm ) {
+            QPixmap mbg( width(), height() );
+
+            QWidget *wid = static_cast<QWidget*>(Panel::the()->containerArea());
+            if ( !wid )
+                kdDebug()<<k_funcinfo<<" there was a serious kicker transparency error!"<<endl;
+            QPoint tl = mapTo(wid, rect().topLeft());
+            QPoint lr = mapTo(wid, rect().bottomRight());
+            bitBlt(&mbg, QPoint(0,0), pm, QRect(tl, lr), CopyROP);
+
+            pbg.drawPixmap( 0, 0, mbg);
+        } else
+            pbg.fillRect(rect(), colorGroup().brush(QColorGroup::Background));
+    }
 
     QPixmap tile = (isDown() || isOn()) ? _down : _up;
     if (!tile.isNull()) { // Draw the tile
Index: kicker/core/containerarea.cpp
===================================================================
RCS file: /home/kde/kdebase/kicker/core/containerarea.cpp,v
retrieving revision 1.126
diff -u -3 -p -r1.126 containerarea.cpp
--- kicker/core/containerarea.cpp	2002/07/02 22:12:03	1.126
+++ kicker/core/containerarea.cpp	2002/07/23 22:06:49
@@ -44,6 +44,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE 
 #include <kpixmap.h>
 #include <klocale.h>
 #include <kio/netaccess.h>
+#include <krootpixmap.h>
 
 #include "kicker.h"
 #include "pluginmanager.h"
@@ -70,6 +71,7 @@ ContainerArea::ContainerArea( KConfig* _
     , _dragIndicator(0)
     , _dragMoveAC(0)
     , _dragMoveOffset(QPoint(0,0))
+    , _rootPixmap(0)
 {
     setAcceptDrops( !Kicker::kicker()->isImmutable() );
     connect(&_autoScrollTimer, SIGNAL(timeout()), SLOT(autoScroll()));
@@ -233,7 +235,7 @@ void ContainerArea::saveContainerConfig(
     // build the applet list
     QStringList alist;
 
-    for( ContainerIterator it(_containers); it.current(); ++it ) 
+    for( ContainerIterator it(_containers); it.current(); ++it )
     {
         BaseContainer* a = it.current();
 
@@ -258,7 +260,7 @@ void ContainerArea::loadContainerConfig(
     QStringList alist = group.readListEntry("Applets");
 
     // now restore the applets
-    for( QStringList::Iterator it = alist.begin(); it != alist.end(); ++it ) 
+    for( QStringList::Iterator it = alist.begin(); it != alist.end(); ++it )
     {
         QString appletId(*it);
 
@@ -272,7 +274,7 @@ void ContainerArea::loadContainerConfig(
         int sep = appletId.findRev('_');
         Q_ASSERT(sep != -1);
         QString appletType = appletId.left(sep);
-        
+
         // create a matching applet container
         if (appletType == "KMenuButton")
             a = new KMenuButtonContainer(viewport());
@@ -1377,52 +1379,63 @@ void ContainerArea::setBackgroundTheme()
     KConfigGroupSaver saver(_config, "General");
 
     if (_config->readBoolEntry("UseBackgroundTheme", false)) {
-	QString bgStr = _config->readEntry("BackgroundTheme", "");
-        bgStr = locate("appdata", bgStr);
-	if(!bgStr.isEmpty()){
-	    QPixmap bgPix(bgStr);
-	    if(!bgPix.isNull()){
-		// Do we need to rotate the image
-		QPixmap bgPixNew;
-
-		if ( _config->readBoolEntry("RotateBackground", false) &&
-		     orientation() == Vertical )
-		    {
-				// Rotate the pixmap before scaling
-			QWMatrix m;
-			m.rotate( -90.0 );
-			bgPixNew = bgPix.xForm( m );
-		    }
-		else
-		    {
-				// Don't rotate the image - just copy it
-			bgPixNew = bgPix;
-		    }
-
-		// Scale the image but keep the same aspect ratio
-		QImage bgImage = bgPixNew.convertToImage();
-		double dAspect = (double)bgPixNew.width() / (double)bgPixNew.height();
-
-		int nNewWidth = width();
-		int nNewHeight = height();
-		if (orientation() == Vertical )
-		    nNewHeight = (int)( (double)nNewWidth / dAspect );
-		else
-		    nNewWidth  = (int)( (double)nNewHeight * dAspect);
-		QImage bgImageNew = bgImage.smoothScale( nNewWidth, nNewHeight );
-
-		// Convert back to a QPixmap
-		bgPixNew.convertFromImage( bgImageNew );
-
-		QBrush bgBrush(colorGroup().background(), bgPixNew);
-		QPalette pal = kapp->palette();
-		pal.setBrush(QColorGroup::Background, bgBrush);
-		setPalette(pal);
-	    }
-	    else {
-		unsetPalette();
-		kdWarning() << "Kicker: Error loading background theme pixmap\n";
-	    }
+        if (_config->readBoolEntry("Transparent", false) ) {
+            if ( !_rootPixmap ) {
+                _rootPixmap = new KRootPixmap(this);
+                _rootPixmap->setCustomPainting(true);
+                connect(_rootPixmap, SIGNAL(backgroundUpdated(const QPixmap&)),
+                        SLOT(updateBackground(const QPixmap&)));
+                _rootPixmap->start();
+            } else
+                _rootPixmap->repaint(true);
+        } else {
+            QString bgStr = _config->readEntry("BackgroundTheme", "");
+            bgStr = locate("appdata", bgStr);
+            if(!bgStr.isEmpty()){
+                QPixmap bgPix(bgStr);
+                if(!bgPix.isNull()){
+                    // Do we need to rotate the image
+                    QPixmap bgPixNew;
+
+                    if ( _config->readBoolEntry("RotateBackground", false) &&
+                         orientation() == Vertical )
+                        {
+                            // Rotate the pixmap before scaling
+                            QWMatrix m;
+                            m.rotate( -90.0 );
+                            bgPixNew = bgPix.xForm( m );
+                        }
+                    else
+                        {
+                            // Don't rotate the image - just copy it
+                            bgPixNew = bgPix;
+                        }
+
+                    // Scale the image but keep the same aspect ratio
+                    QImage bgImage = bgPixNew.convertToImage();
+                    double dAspect = (double)bgPixNew.width() / (double)bgPixNew.height();
+
+                    int nNewWidth = width();
+                    int nNewHeight = height();
+                    if (orientation() == Vertical )
+                        nNewHeight = (int)( (double)nNewWidth / dAspect );
+                    else
+                        nNewWidth  = (int)( (double)nNewHeight * dAspect);
+                    QImage bgImageNew = bgImage.smoothScale( nNewWidth, nNewHeight );
+
+                    // Convert back to a QPixmap
+                    bgPixNew.convertFromImage( bgImageNew );
+
+                    QBrush bgBrush(colorGroup().background(), bgPixNew);
+                    QPalette pal = kapp->palette();
+                    pal.setBrush(QColorGroup::Background, bgBrush);
+                    setPalette(pal);
+                }
+                else {
+                    unsetPalette();
+                    kdWarning() << "Kicker: Error loading background theme pixmap\n";
+                }
+            }
 	}
     }
     else {
@@ -1794,6 +1807,15 @@ void ContainerArea::autoScroll()
         else if(_moveAC->pos().y() >= height() - _moveAC->height() - 80)
             scrollBy(0, 10);
     }
+}
+
+void ContainerArea::updateBackground( const QPixmap& pm )
+{
+    QBrush bgBrush(colorGroup().background(), pm);
+    QPalette pal = kapp->palette();
+    pal.setBrush(QColorGroup::Background, bgBrush);
+    setPalette(pal);
+    kdDebug()<<k_funcinfo<<"Making panel transparent"<<endl;
 }
 
 void ContainerArea::scrollTo(BaseContainer* b)
Index: kicker/core/containerarea.h
===================================================================
RCS file: /home/kde/kdebase/kicker/core/containerarea.h,v
retrieving revision 1.52
diff -u -3 -p -r1.52 containerarea.h
--- kicker/core/containerarea.h	2002/07/02 22:12:03	1.52
+++ kicker/core/containerarea.h	2002/07/23 22:06:49
@@ -34,6 +34,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE 
 class KConfig;
 class DragIndicator;
 class PanelContainer;
+class KRootPixmap;
 
 typedef QPtrList<BaseContainer> ContainerList;
 typedef QPtrListIterator<BaseContainer> ContainerIterator;
@@ -92,7 +93,7 @@ protected slots:
     void stopContainerMove(BaseContainer *a);
 
 protected:
-    
+
     QString createUniqueId(const QString& appletType) const;
 
     void layoutChildren();
@@ -138,6 +139,7 @@ protected slots:
     void embeddedWindowDestroyed();
     void slotRemoveContainer(BaseContainer*);
     void autoScroll();
+    void updateBackground( const QPixmap &pm );
 
 private:
     ContainerList _containers;
@@ -151,6 +153,7 @@ private:
     BaseContainer*  _dragMoveAC;
     QPoint	    _dragMoveOffset;
     QTimer          _autoScrollTimer;
+    KRootPixmap*    _rootPixmap;
 };
 
 class DragIndicator : public QWidget

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