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/*
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 02110-1301, USA.
*/
#include "gvimagepart.moc"
#include <tqapplication.h>
#include <tqcursor.h>
#include <tqfile.h>
#include <tqpoint.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(TQWidget* parent, TQFile* file, const TQByteArray& 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(TQWidget* parentWidget, const char* /*widgetName*/, TQObject* parent,
const char* name, const TQStringList &)
: 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, TQT_SIGNAL( loading()), TQT_SLOT( slotLoading()));
connect( mDocument, TQT_SIGNAL( loaded(const KURL&)), TQT_SLOT( slotLoaded(const KURL&)));
mImageView = new ImageView(parentWidget, mDocument, actionCollection());
connect( mImageView, TQT_SIGNAL(requestContextMenu(const TQPoint&)),
this, TQT_SLOT(openContextMenu(const TQPoint&)) );
setWidget(mImageView);
mDirLister = new KDirLister;
mDirLister->setAutoErrorHandlingEnabled( false, 0 );
mDirLister->setMainWindow(TDEApplication::kApplication()->mainWidget());
connect( mDirLister, TQT_SIGNAL( clear()), TQT_SLOT( dirListerClear()));
connect( mDirLister, TQT_SIGNAL( newItems( const KFileItemList& )),
TQT_SLOT( dirListerNewItems( const KFileItemList& )));
connect(mDirLister,TQT_SIGNAL(deleteItem(KFileItem*)),
TQT_SLOT(dirListerDeleteItem(KFileItem*)) );
TQStringList mimeTypes=MimeTypeUtils::rasterImageMimeTypes();
mDirLister->setMimeFilter(mimeTypes);
mPreviousImage=new KAction(i18n("&Previous Image"),
TQApplication::reverseLayout() ? "1rightarrow":"1leftarrow", Key_BackSpace,
this,TQT_SLOT(slotSelectPrevious()), actionCollection(), "previous");
mNextImage=new KAction(i18n("&Next Image"),
TQApplication::reverseLayout() ? "1leftarrow":"1rightarrow", Key_Space,
this,TQT_SLOT(slotSelectNext()), actionCollection(), "next");
updateNextPrevious();
KStdAction::saveAs( this, TQT_SLOT(saveAs()), actionCollection(), "saveAs" );
new KAction(i18n("Rotate &Left"), "rotate_ccw", CTRL + Key_L, this, TQT_SLOT(rotateLeft()), actionCollection(), "rotate_left");
new KAction(i18n("Rotate &Right"), "rotate_cw", CTRL + Key_R, this, TQT_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( TQString() );
KURL newURLDir = url;
newURLDir.setFileName( TQString() );
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;
}
TQString 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) {
TQString caption = url.filename() + TQString(" - %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, TQT_SIGNAL( imageLoaded( bool )), TQT_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, TQString(), 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 ) {
TQPtrListIterator<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() {
TQStringList::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 {
TQStringList::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 {
TQStringList::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(),
TQString(),
widget());
if (!dstURL.isValid()) return;
// Try to get data from the cache to avoid downloading the image again.
TQByteArray 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, TQT_SIGNAL(result(KIO::Job*)),
this, TQT_SLOT(showJobError(KIO::Job*)) );
return;
}
if (dstURL.isLocalFile()) {
// Destination is a local file, store it ourself
TQString path = dstURL.path();
TQFile 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(TQWidget* dialogParent, const TQByteArray& 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, TQT_SIGNAL(result(KIO::Job*)),
this, TQT_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 TQString &doc ) {
setInstance( inst );
setXML( doc );
}
};
void GVImagePart::openContextMenu(const TQPoint& pos) {
TQString doc = KXMLGUIFactory::readConfigFile( "gvimagepartpopup.rc", true, instance() );
PopupGUIClient guiClient(instance(), doc);
KStdAction::saveAs( this, TQT_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
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