Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdegraphics@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 179 insertions, 0 deletions

diff --git a/kview/modules/browser/kviewbrowser.cpp b/kview/modules/browser/kviewbrowser.cpp
new file mode 100644
index 00000000..6da318b7
--- /dev/null
+++ b/kview/modules/browser/kviewbrowser.cpp
@@ -0,0 +1,179 @@
+/*  This file is part of the KDE project
+    Copyright (C) 2002 Matthias Kretz <kretz@kde.org>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License version 2
+    as published by the Free Software Foundation.
+
+    This program 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 General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+*/
+// $Id$
+
+#include "kviewbrowser.h"
+#include "kmyfileitemlist.h"
+
+#include <qcursor.h>
+
+#include <kdirlister.h>
+#include <kaction.h>
+#include <klocale.h>
+#include <kgenericfactory.h>
+#include <kdebug.h>
+#include <kimageviewer/viewer.h>
+#include <kimageviewer/canvas.h>
+#include <kparts/browserextension.h>
+#include <kapplication.h>
+#include <kimageio.h>
+
+typedef KGenericFactory<KViewBrowser> KViewBrowserFactory;
+K_EXPORT_COMPONENT_FACTORY( kview_browserplugin, KViewBrowserFactory( "kviewbrowserplugin" ) )
+
+KViewBrowser::KViewBrowser( QObject* parent, const char* name, const QStringList & )
+	: Plugin( parent, name )
+	, m_pDirLister( 0 )
+	, m_pFileItemList( 0 )
+	, m_bShowCurrent( false )
+{
+	m_pViewer = static_cast<KImageViewer::Viewer *>( parent );
+	if( m_pViewer )
+	{
+		m_paBack    = KStdAction::back   ( this, SLOT( slotBack()    ), actionCollection(), "previous_image" );
+		m_paBack->setShortcut( SHIFT+Key_Left );
+		m_paForward = KStdAction::forward( this, SLOT( slotForward() ), actionCollection(), "next_image"     );
+		m_paForward->setShortcut( SHIFT+Key_Right );
+		m_pExtension = m_pViewer->browserExtension();
+	}
+	else
+		kdWarning( 4630 ) << "no KImageViewer interface found - the browser plugin won't work" << endl;
+}
+
+KViewBrowser::~KViewBrowser()
+{
+	delete m_pDirLister;
+	delete m_pFileItemList;
+}
+
+void KViewBrowser::openURL(const KURL &u)
+{
+	if (m_pViewer)
+	{
+		// Opening new URL resets zoom, so remember it.
+		double oldZoom = m_pViewer->canvas()->zoom();
+		m_pViewer->openURL(u);
+		m_pViewer->canvas()->setZoom(oldZoom);
+	}
+	if( m_pExtension )
+	{
+		emit m_pExtension->setLocationBarURL( u.prettyURL() );
+	}
+}
+
+void KViewBrowser::slotBack()
+{
+	setupDirLister();
+	if( ! m_pFileItemList )
+		return;
+
+	KFileItem * item = m_pFileItemList->prev();
+	if( ! item )
+		item = m_pFileItemList->last();
+	if( item )
+	{
+		kdDebug( 4630 ) << item->url().prettyURL() << endl;
+		openURL( item->url() );
+	}
+	else
+		kdDebug( 4630 ) << "no file found" << endl;
+	m_bShowCurrent = false;
+}
+
+void KViewBrowser::slotForward()
+{
+	setupDirLister();
+	if( ! m_pFileItemList )
+		return;
+
+	KFileItem * item = m_bShowCurrent ? m_pFileItemList->current() : m_pFileItemList->next();
+	if( ! item )
+		item = m_pFileItemList->first();
+	if( item )
+	{
+		kdDebug( 4630 ) << item->url().prettyURL() << endl;
+		openURL( item->url() );
+	}
+	else
+		kdDebug( 4630 ) << "no file found" << endl;
+	m_bShowCurrent = false;
+}
+
+void KViewBrowser::slotNewItems( const KFileItemList & items )
+{
+	kdDebug( 4630 ) << k_funcinfo << endl;
+	delete m_pFileItemList;
+	m_pFileItemList = new KMyFileItemList( items );
+	m_pFileItemList->sort();
+
+	// set the current pointer on the currently open image
+	KFileItem * item = m_pFileItemList->first();
+	for( ; item; item = m_pFileItemList->next() )
+		if( item->url() == m_pViewer->url() )
+			break;
+}
+
+void KViewBrowser::slotDeleteItem( KFileItem * item )
+{
+	bool setToFirst = false;
+	if( m_pFileItemList->current() == item )
+	{
+		// The current image is being removed
+		// we have to take care, that the next slotForward call returns the new current item
+		m_bShowCurrent = true;
+
+		if( m_pFileItemList->getLast() == item )
+			// The the current image is the last image - wrap around to the first
+			setToFirst = true;
+	}
+
+	m_pFileItemList->remove( item );
+
+	if( setToFirst )
+		( void )m_pFileItemList->first();
+}
+
+void KViewBrowser::setupDirLister()
+{
+	if( ! m_pDirLister )
+	{
+		kdDebug( 4630 ) << "create new KDirLister" << endl;
+		m_pDirLister = new KDirLister();
+		m_pDirLister->setMimeFilter( KImageIO::mimeTypes( KImageIO::Reading ) );
+		m_pDirLister->setShowingDotFiles( true );
+		connect( m_pDirLister, SIGNAL( newItems( const KFileItemList & ) ), SLOT( slotNewItems( const KFileItemList & ) ) );
+		connect( m_pDirLister, SIGNAL( deleteItem( KFileItem * ) ), SLOT( slotDeleteItem( KFileItem * ) ) );
+	}
+	if( m_pDirLister->url() != KURL( m_pViewer->url().directory( true, false ) ) )
+	{
+		QApplication::setOverrideCursor( WaitCursor );
+		QString url = m_pViewer->url().prettyURL();
+		int pos = url.findRev( "/" );
+		url = url.left( (unsigned int)pos );
+		kdDebug( 4630 ) << "open KDirLister for " << url << endl;
+		m_pDirLister->openURL( KURL( url ));
+		while( ! m_pDirLister->isFinished() )
+			kapp->processEvents();
+		//while( ! m_pFileItemList )
+			//kapp->processEvents();
+		QApplication::restoreOverrideCursor();
+	}
+}
+
+// vim:sw=4:ts=4:cindent
+#include "kviewbrowser.moc"