📄 khtmlimage.cpp
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/* This file is part of the KDE project Copyright (C) 2000 Simon Hausmann <hausmann@kde.org> This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.*/#include "khtmlimage.h"#include "khtml_part.h"#include "khtmlview.h"#include "khtml_ext.h"#include "xml/dom_docimpl.h"#include "html/html_documentimpl.h"#include "html/html_elementimpl.h"#include "rendering/render_image.h"#include "misc/loader.h"#include <qvbox.h>#include <qtimer.h>#include <kparts/factory.h>#include <kio/job.h>#include <kglobal.h>#include <kinstance.h>#include <kaction.h>#include <kmimetype.h>#include <klocale.h>extern "C"{ void *init_libkhtmlimage() { return new KHTMLImageFactory(); }};KInstance *KHTMLImageFactory::s_instance = 0;KHTMLImageFactory::KHTMLImageFactory(){ s_instance = new KInstance( "khtmlimage" );}KHTMLImageFactory::~KHTMLImageFactory(){ delete s_instance;}KParts::Part *KHTMLImageFactory::createPartObject( QWidget *parentWidget, const char *widgetName, QObject *parent, const char *name, const char *, const QStringList & ){ return new KHTMLImage( parentWidget, widgetName, parent, name );}KHTMLImage::KHTMLImage( QWidget *parentWidget, const char *widgetName, QObject *parent, const char *name ) : KParts::ReadOnlyPart( parent, name ){ setInstance( KHTMLImageFactory::instance() ); QVBox *box = new QVBox( parentWidget, widgetName ); m_khtml = new KHTMLPart( box, widgetName, this, "htmlimagepart" ); m_khtml->autoloadImages( true ); setWidget( box ); setXMLFile( m_khtml->xmlFile() ); m_ext = new KHTMLImageBrowserExtension( this, "be" ); connect( m_khtml->browserExtension(), SIGNAL( popupMenu( KXMLGUIClient *, const QPoint &, const KURL &, const QString &, mode_t ) ), this, SLOT( slotPopupMenu( KXMLGUIClient *, const QPoint &, const KURL &, const QString &, mode_t ) ) ); connect( m_khtml->browserExtension(), SIGNAL( enableAction( const char *, bool ) ), m_ext, SIGNAL( enableAction( const char *, bool ) ) ); m_ext->setURLDropHandlingEnabled( true );}KHTMLImage::~KHTMLImage(){ // important: delete the html part before the part or qobject destructor runs. // we now delete the htmlpart which deletes the part's widget which makes // _OUR_ m_widget 0 which in turn avoids our part destructor to delete the // widget ;-) // ### additional note: it _can_ be that the part has been deleted before: // when we're in a html frameset and the view dies first, then it will also // kill the htmlpart if ( m_khtml ) delete static_cast<KHTMLPart *>( m_khtml );}bool KHTMLImage::openURL( const KURL &url ){ static const QString &html = KGlobal::staticQString( "<html><body><img src=\"%1\"></body></html>" ); m_url = url; emit started( 0 ); KParts::URLArgs args = m_ext->urlArgs(); m_mimeType = args.serviceType; m_khtml->begin( m_url, args.xOffset, args.yOffset ); m_khtml->setAutoloadImages( true ); DOM::DocumentImpl *impl = dynamic_cast<DOM::DocumentImpl *>( m_khtml->document().handle() ); // ### hack ;-) if ( impl && m_ext->urlArgs().reload ) impl->docLoader()->setReloading(true); m_khtml->write( html.arg( m_url.url() ) ); m_khtml->end(); KIO::Job *job = khtml::Cache::loader()->jobForRequest( m_url.url() ); emit setWindowCaption( url.prettyURL() ); if ( job ) { emit started( job ); connect( job, SIGNAL( result( KIO::Job * ) ), this, SLOT( slotImageJobFinished( KIO::Job * ) ) ); } else { emit started( 0 ); emit completed(); } return true;}bool KHTMLImage::closeURL(){ return true;}void KHTMLImage::guiActivateEvent( KParts::GUIActivateEvent *e ){ if ( e->activated() ) emit setWindowCaption( m_url.prettyURL() );}void KHTMLImage::slotPopupMenu( KXMLGUIClient *cl, const QPoint &pos, const KURL &u, const QString &, mode_t mode ){ KAction *encodingAction = cl->actionCollection()->action( "setEncoding" ); if ( encodingAction ) cl->actionCollection()->take( encodingAction ); emit m_ext->popupMenu( cl, pos, u, m_mimeType, mode );}void KHTMLImage::slotImageJobFinished( KIO::Job *job ){ if ( job->error() ) { job->showErrorDialog(); emit canceled( job->errorString() ); } else { if ( m_khtml->view()->contentsY() == 0 ) { KParts::URLArgs args = m_ext->urlArgs(); m_khtml->view()->setContentsPos( args.xOffset, args.yOffset ); } emit completed(); QTimer::singleShot( 0, this, SLOT( updateWindowCaption() ) ); }}void KHTMLImage::updateWindowCaption(){ if ( !m_khtml ) return; DOM::HTMLDocumentImpl *impl = dynamic_cast<DOM::HTMLDocumentImpl *>( m_khtml->document().handle() ); if ( !impl ) return; DOM::HTMLElementImpl *body = impl->body(); if ( !body ) return; DOM::NodeImpl *image = body->firstChild(); if ( !image ) return; khtml::RenderImage *renderImage = dynamic_cast<khtml::RenderImage *>( image->renderer() ); if ( !renderImage ) return; QPixmap pix = renderImage->pixmap(); QString caption; KMimeType::Ptr mimeType; if ( !m_mimeType.isEmpty() ) mimeType = KMimeType::mimeType( m_mimeType ); if ( mimeType ) caption = i18n( "%1 - %2x%3 Pixels" ).arg( mimeType->comment() ) .arg( pix.width() ).arg( pix.height() ); else caption = i18n( "Image - %2x%3 Pixels" ).arg( pix.width() ).arg( pix.height() ); emit setWindowCaption( caption );}KHTMLImageBrowserExtension::KHTMLImageBrowserExtension( KHTMLImage *parent, const char *name ) : KParts::BrowserExtension( parent, name ){ m_imgPart = parent;}int KHTMLImageBrowserExtension::xOffset(){ return m_imgPart->doc()->view()->contentsX();}int KHTMLImageBrowserExtension::yOffset(){ return m_imgPart->doc()->view()->contentsY();}void KHTMLImageBrowserExtension::print(){ static_cast<KHTMLPartBrowserExtension *>( m_imgPart->doc()->browserExtension() )->print();}void KHTMLImageBrowserExtension::reparseConfiguration(){ static_cast<KHTMLPartBrowserExtension *>( m_imgPart->doc()->browserExtension() )->reparseConfiguration(); m_imgPart->doc()->autoloadImages( true );}using namespace KParts;#include "khtmlimage.moc"⌨️ 快捷键说明
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