Fixed crash when exiting with kapp->quit(). Usually the Settings singleton

is deleted after all classes, but when kpdf is run stand-alone and quit()
is used (currently only by clicking on Quit links) the app could crash.
-> Best practice: don't use KConfigXT settings classes for storing values
on destructors (do it when a parameter is updated).
CCMAIL: Mikolaj Machowski <mikmach@wp.pl>

svn path=/branches/kpdf_annotations/kdegraphics/kpdf/; revision=403765

TODO

@@ -111,6 +111,8 @@ Icons needed:
 - COMMON (here in ToolBox): Toc, Annotations
 
 Done (newest features come first):
+-> FIX: random crash when closing kpdf with kapp->quit() (don't use Settings:: in destructors)
+-> FIX: implement links for starting end exiting from presentation mode (pdf FullScreen, Close actions)
 -> CHG: cursor wraps on screen for dragging the page/dynZooming
 -> FIX: raised scaling performance by 10x times for typ usage, removed odd cases, speedups to viewScroll and dynZoom
 -> ADD: annotations: complete xml storage/retrieval of internal annotations

part.cpp

@@ -111,6 +111,7 @@ Part::Part(QWidget *parentWidget, const char *widgetName,
 	// widgets: [] splitter []
 	m_splitter = new QSplitter( parentWidget, widgetName );
 	m_splitter->setOpaqueResize( true );
+	m_splitter->setChildrenCollapsible( false );
 	setWidget( m_splitter );
 
 	// widgets: [left panel] | []
@@ -255,6 +256,10 @@ Part::Part(QWidget *parentWidget, const char *widgetName,
 		splitterSizes.push_back( 500 );
 	}
 	m_splitter->setSizes( splitterSizes );
+	// get notified about splitter size changes (HACK that will be removed
+	// by connecting to Qt4::QSplitter's sliderMoved())
+	m_pageView->installEventFilter( this );
+
 	m_watcher = new KDirWatch( this );
 	connect( m_watcher, SIGNAL( dirty( const QString& ) ), this, SLOT( slotFileDirty( const QString& ) ) );
 	m_dirtyHandler = new QTimer( this );
@@ -273,11 +278,6 @@ Part::Part(QWidget *parentWidget, const char *widgetName,
 
 Part::~Part()
 {
-    // save internal settings
-    Settings::setSplitterSizes( m_splitter->sizes() );
-    // write to disk config file
-    Settings::writeConfig();
-
     delete m_document;
     if ( --m_count == 0 )
         delete globalParams;
@@ -385,6 +385,16 @@ bool Part::closeURL()
     return KParts::ReadOnlyPart::closeURL();
 }
 
+bool Part::eventFilter( QObject * watched, QEvent * e )
+{
+    // if pageView has been resized, save splitter sizes
+    if ( watched == m_pageView && e->type() == QEvent::Resize )
+        Settings::setSplitterSizes( m_splitter->sizes() );
+
+    // only intercept events, don't block them
+    return false;
+}
+
 void Part::slotShowLeftPanel()
 {
     bool showLeft = m_showLeftPanel->isChecked();

part.h

@@ -81,6 +81,8 @@ protected:
 	bool openFile();
 	bool openURL(const KURL &url);
 	bool closeURL();
+	// filter that watches for splitter size changes
+	bool eventFilter( QObject * watched, QEvent * e );
 
 protected slots:
 	// connected to actions