1 files changed, 450 insertions, 0 deletions
diff --git a/src/gvimagepart/gvimagepart.cpp b/src/gvimagepart/gvimagepart.cpp
new file mode 100644
index 0000000..5750445
--- /dev/null
+++ b/src/gvimagepart/gvimagepart.cpp
@@ -0,0 +1,450 @@
+/*
+Copyright 2004 Jonathan Riddell <[email protected]>
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+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 Steet, Fifth Floor, Boston, MA  02111-1307, USA.
+
+*/
+#include "gvimagepart.moc"
+
+#include <qapplication.h>
+#include <qcursor.h>
+#include <qfile.h>
+#include <qpoint.h>
+
+#include <kaction.h>
+#include <kapplication.h>
+#include <kconfig.h>
+#include <kdebug.h>
+#include <kdirlister.h>
+#include <kfiledialog.h>
+#include <kiconloader.h>
+#include <klocale.h>
+#include <kmessagebox.h>
+#include <kmimetype.h>
+#include <kparts/genericfactory.h>
+
+#include <gvcore/cache.h>
+#include <gvcore/document.h>
+#include <gvcore/fileoperation.h>
+#include <gvcore/printdialog.h>
+#include <gvcore/imageview.h>
+#include <gvcore/imageloader.h>
+#include <gvcore/mimetypeutils.h>
+
+#include "config.h"
+
+namespace Gwenview {
+// For now let's duplicate
+const char CONFIG_CACHE_GROUP[]="cache";
+
+#undef ENABLE_LOG
+#undef LOG
+#define ENABLE_LOG
+#ifdef ENABLE_LOG
+#define LOG(x) kdDebug() << k_funcinfo << x << endl
+#else
+#define LOG(x) ;
+#endif
+
+
+static bool storeData(QWidget* parent, QFile* file, const QByteArray& data) {
+	uint sizeWritten = file->writeBlock(data);
+	if (sizeWritten != data.size()) {
+		KMessageBox::error(
+			parent,
+			i18n("Could not save image to a temporary file"));
+		return false;
+	}
+	return true;
+}
+
+
+//Factory Code
+typedef KParts::GenericFactory<GVImagePart> GVImageFactory;
+K_EXPORT_COMPONENT_FACTORY( libgvimagepart /*library name*/, GVImageFactory )
+
+GVImagePart::GVImagePart(QWidget* parentWidget, const char* /*widgetName*/, QObject* parent,
+			 const char* name, const QStringList &)
+	: KParts::ReadOnlyPart( parent, name )
+	, mPrefetch( NULL )
+	, mLastDirection( DirectionUnknown )  {
+	GVImageFactory::instance()->iconLoader()->addAppDir( "gwenview");
+	setInstance( GVImageFactory::instance() );
+	KGlobal::locale()->insertCatalogue("gwenview");
+	KGlobal::locale()->setActiveCatalogue("gwenview");
+
+	mBrowserExtension = new GVImagePartBrowserExtension(this);
+
+	// Create the widgets
+	mDocument = new Document(this);
+	connect( mDocument, SIGNAL( loading()), SLOT( slotLoading()));
+	connect( mDocument, SIGNAL( loaded(const KURL&)), SLOT( slotLoaded(const KURL&)));
+	mImageView = new ImageView(parentWidget, mDocument, actionCollection());
+	connect( mImageView, SIGNAL(requestContextMenu(const QPoint&)),
+		this, SLOT(openContextMenu(const QPoint&)) );
+	setWidget(mImageView);
+
+	mDirLister = new KDirLister;
+	mDirLister->setAutoErrorHandlingEnabled( false, 0 );
+	mDirLister->setMainWindow(KApplication::kApplication()->mainWidget());
+	connect( mDirLister, SIGNAL( clear()), SLOT( dirListerClear()));
+	connect( mDirLister, SIGNAL( newItems( const KFileItemList& )),
+		SLOT( dirListerNewItems( const KFileItemList& )));
+	connect(mDirLister,SIGNAL(deleteItem(KFileItem*)),
+		SLOT(dirListerDeleteItem(KFileItem*)) );
+	
+	QStringList mimeTypes=MimeTypeUtils::rasterImageMimeTypes();
+	mDirLister->setMimeFilter(mimeTypes);
+	mPreviousImage=new KAction(i18n("&Previous Image"),
+		QApplication::reverseLayout() ? "1rightarrow":"1leftarrow", Key_BackSpace,
+		this,SLOT(slotSelectPrevious()), actionCollection(), "previous");
+	mNextImage=new KAction(i18n("&Next Image"),
+		QApplication::reverseLayout() ? "1leftarrow":"1rightarrow", Key_Space,
+		this,SLOT(slotSelectNext()), actionCollection(), "next");
+	updateNextPrevious();
+
+	KStdAction::saveAs( this, SLOT(saveAs()), actionCollection(), "saveAs" );
+	new KAction(i18n("Rotate &Left"), "rotate_ccw", CTRL + Key_L, this, SLOT(rotateLeft()), actionCollection(), "rotate_left");
+	new KAction(i18n("Rotate &Right"), "rotate_cw", CTRL + Key_R, this, SLOT(rotateRight()), actionCollection(), "rotate_right");
+
+	setXMLFile( "gvimagepart/gvimagepart.rc" );
+}
+
+GVImagePart::~GVImagePart() {
+	delete mDirLister;
+}
+
+
+void GVImagePart::partActivateEvent(KParts::PartActivateEvent* event) {
+	if (event->activated()) {
+		KConfig* config=new KConfig("gwenviewrc");
+		Cache::instance()->readConfig(config,CONFIG_CACHE_GROUP);
+		delete config;
+	}
+	KParts::ReadOnlyPart::partActivateEvent( event );
+}
+
+
+void GVImagePart::guiActivateEvent( KParts::GUIActivateEvent* event) {
+	// Stolen from KHTMLImage
+	//
+	// prevent the base implementation from emitting setWindowCaption with
+	// our url. It destroys our pretty, previously caption. Konq saves/restores
+	// the caption for us anyway.
+	if (event->activated()) {
+		return;
+	}
+	KParts::ReadOnlyPart::guiActivateEvent(event);
+}
+
+
+KAboutData* GVImagePart::createAboutData() {
+	KAboutData* aboutData = new KAboutData( "gvimagepart", I18N_NOOP("GVImagePart"),
+						"0.1", I18N_NOOP("Image Viewer"),
+						KAboutData::License_GPL,
+						"(c) 2004, Jonathan Riddell <[email protected]>");
+	return aboutData;
+}
+
+bool GVImagePart::openURL(const KURL& url) {
+	if (!url.isValid())  {
+		return false;
+	}
+	KURL oldURLDir = m_url;
+	oldURLDir.setFileName( QString::null );
+	KURL newURLDir = url;
+	newURLDir.setFileName( QString::null );
+	bool sameDir = oldURLDir == newURLDir;
+	m_url = url;
+	emit started( 0 );
+	if( mDocument->url() == url ) { // reload button in Konqy - setURL would return immediately
+		mDocument->reload();
+	} else {
+		mDocument->setURL(url);
+	}
+	if( !sameDir ) {
+		mDirLister->openURL(mDocument->dirURL());
+		mLastDirection = DirectionUnknown;
+	}
+	return true;
+}
+
+QString GVImagePart::filePath() {
+	return m_file;
+}
+
+void GVImagePart::slotLoading() {
+	emit setWindowCaption(mDocument->url().filename() + " - " + i18n("Loading..."));
+	// Set the location bar URL because we can arrive here if the user click on
+	// previous/next, which do not use openURLRequest
+	emit mBrowserExtension->setLocationBarURL(mDocument->url().pathOrURL());
+	updateNextPrevious();
+}
+
+void GVImagePart::slotLoaded(const KURL& url) {
+	QString caption = url.filename() + QString(" - %1x%2").arg(mDocument->width()).arg(mDocument->height());
+	emit setWindowCaption(caption);
+	emit completed();
+	emit setStatusBarText(i18n("Done."));
+	prefetchDone();
+	mPrefetch = ImageLoader::loader( mLastDirection == DirectionPrevious ? previousURL() : nextURL(),
+		this, BUSY_PRELOADING );
+	connect( mPrefetch, SIGNAL( imageLoaded( bool )), SLOT( prefetchDone()));
+}
+
+void GVImagePart::prefetchDone() {
+	if( mPrefetch != NULL ) { 
+		mPrefetch->release( this );
+	}
+	mPrefetch = NULL;
+}
+
+void GVImagePart::print() {
+	KPrinter printer;
+
+	printer.setDocName( m_url.filename() );
+	KPrinter::addDialogPage( new PrintDialogPage( mDocument, mImageView, "GV page"));
+
+	if (printer.setup(mImageView, QString::null, true)) {
+		mDocument->print(&printer);
+	}
+}
+
+void GVImagePart::rotateLeft() {
+	mDocument->transform(ImageUtils::ROT_270);
+}
+
+void GVImagePart::rotateRight() {
+	mDocument->transform(ImageUtils::ROT_90);
+}
+
+void GVImagePart::dirListerClear() {
+	mImagesInDirectory.clear();
+	updateNextPrevious();
+}
+
+void GVImagePart::dirListerNewItems( const KFileItemList& list ) {
+	QPtrListIterator<KFileItem> it(list);
+	for( ; it.current(); ++it ) {
+		mImagesInDirectory.append( (*it)->name());
+	}
+	qHeapSort( mImagesInDirectory );
+	updateNextPrevious();
+}
+
+void GVImagePart::dirListerDeleteItem( KFileItem* item ) {
+	mImagesInDirectory.remove( item->name());
+	updateNextPrevious();
+}
+
+void GVImagePart::updateNextPrevious() {
+	QStringList::ConstIterator current = mImagesInDirectory.find( mDocument->filename());
+	if( current == mImagesInDirectory.end()) {
+		mNextImage->setEnabled( false );
+		mPreviousImage->setEnabled( false );
+		return;
+	}
+	mPreviousImage->setEnabled( current != mImagesInDirectory.begin());
+	++current;
+	mNextImage->setEnabled( current != mImagesInDirectory.end());
+}
+
+KURL GVImagePart::nextURL() const {
+	QStringList::ConstIterator current = mImagesInDirectory.find( mDocument->filename());
+	if( current == mImagesInDirectory.end()) {
+		return KURL();
+	}
+	++current;
+	if( current == mImagesInDirectory.end()) {
+		return KURL();
+	}
+	KURL newURL = mDocument->dirURL();
+	newURL.setFileName( *current );
+	return newURL;
+}
+
+void GVImagePart::slotSelectNext() {
+	KURL newURL = nextURL();
+	if( newURL.isEmpty()) return;
+	mLastDirection = DirectionNext;
+	// Do not use mBrowserExtension->openURLRequest to avoid switching to
+	// another KPart
+	openURL(newURL);
+	emit mBrowserExtension->openURLNotify();
+}
+
+KURL GVImagePart::previousURL() const {
+	QStringList::ConstIterator current = mImagesInDirectory.find( mDocument->filename());
+	if( current == mImagesInDirectory.end() || current == mImagesInDirectory.begin()) {
+		return KURL();
+	}
+	--current;
+	KURL newURL = mDocument->dirURL();
+	newURL.setFileName( *current );
+	return newURL;
+}
+
+void GVImagePart::slotSelectPrevious() {
+	KURL newURL = previousURL();
+	if( newURL.isEmpty()) return;
+	mLastDirection = DirectionPrevious;
+	openURL(newURL);
+	emit mBrowserExtension->openURLNotify();
+}
+
+
+void GVImagePart::saveAs() {
+	if (!mDocument->isModified()) {
+		saveOriginalAs();
+		return;
+	}
+
+	if (mDocument->canBeSaved()) {
+		mDocument->saveAs();
+		return;
+	}
+
+	KGuiItem saveItem(i18n("&Save Original"), "filesaveas");
+	int result = KMessageBox::warningContinueCancel(
+		widget(), 
+		i18n("Gwenview KPart can't save the modifications you made. Do you want to save the original image?"),
+		i18n("Warning"),
+		saveItem);
+
+	if (result == KMessageBox::Cancel) return;
+
+	saveOriginalAs();
+}
+
+
+void GVImagePart::showJobError(KIO::Job* job) {
+	if (job->error() != 0) { 
+		job->showErrorDialog(widget());
+	}
+}
+
+
+void GVImagePart::saveOriginalAs() {
+	KURL srcURL = mDocument->url();
+	KURL dstURL = KFileDialog::getSaveURL(
+		srcURL.fileName(),
+		QString::null,
+		widget());
+	if (!dstURL.isValid()) return;
+
+	// Try to get data from the cache to avoid downloading the image again.
+	QByteArray data = Cache::instance()->file(srcURL);
+
+	if (data.size() == 0) {
+		// We need to read the image again. Let KIO::copy do the work.
+		KIO::Job* job = KIO::copy(srcURL, dstURL);
+		job->setWindow(widget());
+		connect(job, SIGNAL(result(KIO::Job*)),
+			this, SLOT(showJobError(KIO::Job*)) );
+		return;
+	}
+
+	if (dstURL.isLocalFile()) {
+		// Destination is a local file, store it ourself
+		QString path = dstURL.path();
+		QFile file(path);
+		if (!file.open(IO_WriteOnly)) {
+			KMessageBox::error(
+				widget(),
+				i18n("Could not open '%1' for writing.").arg(path));
+			return;
+		}
+		storeData(widget(), &file, data);
+		return;
+	}
+
+	// We need to send the data to a remote location
+	new DataUploader(widget(), data, dstURL);
+}
+
+
+DataUploader::DataUploader(QWidget* dialogParent, const QByteArray& data, const KURL& dstURL)
+: mDialogParent(dialogParent)
+{
+	mTempFile.setAutoDelete(true);
+
+	// Store it in a temp file
+	if (! storeData(dialogParent, mTempFile.file(), data) ) return;
+
+	// Now upload it
+	KURL tmpURL;
+	tmpURL.setPath(mTempFile.name());
+	KIO::Job* job = KIO::copy(tmpURL, dstURL);
+	job->setWindow(dialogParent);
+	connect(job, SIGNAL(result(KIO::Job*)),
+		this, SLOT(slotJobFinished(KIO::Job*)) );
+}
+
+
+void DataUploader::slotJobFinished(KIO::Job* job) {
+	if (job->error() != 0) { 
+		job->showErrorDialog(mDialogParent);
+	}
+
+	delete this;
+}
+
+
+/**
+ * Overload KXMLGUIClient so that we can call setXML
+ */
+class PopupGUIClient : public KXMLGUIClient {
+public:
+	PopupGUIClient( KInstance *inst, const QString &doc ) {
+		setInstance( inst );
+		setXML( doc );
+	}
+};
+
+
+void GVImagePart::openContextMenu(const QPoint& pos) {
+	QString doc = KXMLGUIFactory::readConfigFile( "gvimagepartpopup.rc", true, instance() );
+	PopupGUIClient guiClient(instance(), doc);
+	
+	KStdAction::saveAs( this, SLOT(saveAs()), guiClient.actionCollection(), "saveAs" );
+	
+	KParts::URLArgs urlArgs;
+	urlArgs.serviceType = mDocument->mimeType();
+
+	KParts::BrowserExtension::PopupFlags flags = 
+		KParts::BrowserExtension::ShowNavigationItems 
+		| KParts::BrowserExtension::ShowUp
+		| KParts::BrowserExtension::ShowReload;
+	
+	emit mBrowserExtension->popupMenu(&guiClient, pos, m_url, urlArgs, flags, S_IFREG);
+}
+
+
+/***** GVImagePartBrowserExtension *****/
+
+GVImagePartBrowserExtension::GVImagePartBrowserExtension(GVImagePart* viewPart, const char* name)
+	:KParts::BrowserExtension(viewPart, name) {
+	mGVImagePart = viewPart;
+	emit enableAction("print", true );
+}
+
+GVImagePartBrowserExtension::~GVImagePartBrowserExtension() {
+}
+
+void GVImagePartBrowserExtension::print() {
+	mGVImagePart->print();
+}
+
+} // namespace