Added abandoned KDE3 version of kchmviewer

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/kchmviewer@1090662 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 270 insertions, 0 deletions

diff --git a/src/kchmviewwindow_qtextbrowser.cpp b/src/kchmviewwindow_qtextbrowser.cpp
new file mode 100644
index 0000000..1ab7bf6
--- /dev/null
+++ b/src/kchmviewwindow_qtextbrowser.cpp
@@ -0,0 +1,270 @@
+/***************************************************************************
+ *   Copyright (C) 2004-2007 by Georgy Yunaev, gyunaev@ulduzsoft.com       *
+ *   Please do not use email address above for bug reports; see            *
+ *   the README file                                                       *
+ *                                                                         *
+ *   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 Street, Fifth Floor, Boston, MA  02110-1301, USA.             *
+ ***************************************************************************/
+
+#include <qprinter.h>
+#include <qpainter.h>
+#include <qsimplerichtext.h>
+#include <qpaintdevicemetrics.h>
+
+#include "kde-qt.h"
+#include "kchmmainwindow.h"
+#include "kchmviewwindow_qtextbrowser.h"
+
+/*
+ * If defined, all the data viewed is kept in source factory. It increases the response time
+ * when a user opens the page he has already seen, in cost of everything which has been opened 
+ * is stored in memory, increasing memory usage.
+ *
+ * If not defined, on any page change the source factory cleans up, saving the memory, but 
+ * increasing the page loading time in case the page has the same images, or the page is opened
+ * second time.
+ */
+#define KEEP_ALL_OPENED_DATA_IN_SOURCE_FACTORY
+
+KCHMViewWindow_QTextBrowser::KCHMViewWindow_QTextBrowser( QTabWidget * parent )
+	: QTextBrowser ( parent ), KCHMViewWindow ( parent )
+{
+	m_zoomfactor = 0;
+	m_sourcefactory = 0;
+	invalidate();
+	
+	setTextFormat ( Qt::RichText );
+	connect( this, SIGNAL( linkClicked (const QString &) ), this, SLOT( slotLinkClicked(const QString &) ) );
+}
+
+
+KCHMViewWindow_QTextBrowser::~KCHMViewWindow_QTextBrowser()
+{
+	delete m_sourcefactory;
+}
+
+bool KCHMViewWindow_QTextBrowser::openPage (const QString& url)
+{
+	// If we're using a memory saving scheme, we destroy MimeSourceFactory (including all the stored data)
+	// when opening a new page. It saves some memory, but spends more time while looking for already loaded
+	// images and HTML pages
+#if !defined (KEEP_ALL_OPENED_DATA_IN_SOURCE_FACTORY)
+	delete m_sourcefactory;
+	m_sourcefactory = new KCHMSourceFactory;
+	setMimeSourceFactory (m_sourcefactory);
+#endif	
+
+	setSource (url);
+	return true;
+}
+
+void KCHMViewWindow_QTextBrowser::setSource ( const QString & name )
+{
+	if ( m_allowSourceChange )
+	{
+		// Do URI decoding, qtextbrowser does stupid job.
+		QString fixedname = decodeUrl( name );
+		QTextBrowser::setSource (fixedname);
+	}
+	else
+		m_allowSourceChange = true;
+}
+
+void KCHMViewWindow_QTextBrowser::setZoomFactor( int zoom )
+{
+	m_zoomfactor = zoom;
+	
+	if ( zoom < 0 )
+		QTextBrowser::zoomOut( -zoom );
+	else if ( zoom > 0 )
+		QTextBrowser::zoomIn( zoom);
+}
+
+void KCHMViewWindow_QTextBrowser::invalidate( )
+{
+	delete m_sourcefactory;
+	m_sourcefactory = new KCHMSourceFactory (this);
+	setMimeSourceFactory (m_sourcefactory);
+	m_zoomfactor = 0;
+	m_allowSourceChange = true;
+	m_searchLastIndex = 0;
+	m_searchLastParagraph = 0;
+	m_searchText = QString::null;
+	reload();
+	
+	KCHMViewWindow::invalidate( );
+}
+
+int KCHMViewWindow_QTextBrowser::getScrollbarPosition( )
+{
+	return contentsY ();
+}
+
+void KCHMViewWindow_QTextBrowser::setScrollbarPosition( int pos )
+{
+	setContentsPos (0, pos);
+}
+
+void KCHMViewWindow_QTextBrowser::addZoomFactor( int value )
+{
+	setZoomFactor( value);
+}
+
+void KCHMViewWindow_QTextBrowser::slotLinkClicked( const QString & newlink )
+{
+	emit signalLinkClicked (newlink, m_allowSourceChange);
+}
+
+
+bool KCHMViewWindow_QTextBrowser::printCurrentPage( )
+{
+#if !defined (QT_NO_PRINTER)
+    QPrinter printer( QPrinter::HighResolution );
+    printer.setFullPage(TRUE);
+	
+	if ( printer.setup( this ) )
+	{
+		QPainter p( &printer );
+		
+		if( !p.isActive() ) // starting printing failed
+			return false;
+		
+		QPaintDeviceMetrics metrics(p.device());
+		int dpiy = metrics.logicalDpiY();
+		int margin = (int) ( (2/2.54)*dpiy ); // 2 cm margins
+		QRect body( margin, margin, metrics.width() - 2*margin, metrics.height() - 2*margin );
+		QSimpleRichText richText( text(),
+								  QFont(),
+								  context(),
+								  styleSheet(),
+								  mimeSourceFactory(),
+								  body.height() );
+		richText.setWidth( &p, body.width() );
+		QRect view( body );
+		
+		int page = 1;
+		
+		do
+		{
+			richText.draw( &p, body.left(), body.top(), view, colorGroup() );
+			view.moveBy( 0, body.height() );
+			p.translate( 0 , -body.height() );
+			p.drawText( view.right() - p.fontMetrics().width( QString::number(page) ),
+						view.bottom() + p.fontMetrics().ascent() + 5, QString::number(page) );
+			
+			if ( view.top()  >= richText.height() )
+				break;
+			
+			QString msg = i18n( "Printing (page %1)...") .arg(page);
+			::mainWindow->showInStatusBar( msg );
+			
+			printer.newPage();
+			page++;
+		}
+		while (TRUE);
+	
+		::mainWindow->showInStatusBar( i18n( "Printing completed") );
+		return true;
+	}
+
+	::mainWindow->showInStatusBar( i18n( "Printing aborted") );
+	return false;
+
+#else /* QT_NO_PRINTER */
+
+	QMessageBox::warning( this, 
+		i18n( "%1 - could not print") . arg(APP_NAME),
+		i18n( "Could not print.\nYour Qt library has been compiled without printing support");
+	return false;
+
+#endif /* QT_NO_PRINTER */
+}
+
+
+void KCHMViewWindow_QTextBrowser::searchWord( const QString & word, bool forward, bool )
+{
+	if ( m_searchText == word )
+	{
+		if ( forward && (m_searchLastIndex || m_searchLastParagraph) )
+			m_searchLastIndex += m_searchText.length();
+	}
+	else
+	{
+		m_searchLastParagraph = m_searchLastIndex = 0;
+		m_searchText = word;
+	}
+
+	if ( find (m_searchText, false, false, forward, &m_searchLastParagraph, &m_searchLastIndex) )
+		::mainWindow->showInStatusBar( i18n( "Search failed") );
+}
+
+void KCHMViewWindow_QTextBrowser::clipSelectAll( )
+{
+	selectAll (TRUE);
+}
+
+void KCHMViewWindow_QTextBrowser::clipCopy( )
+{
+	copy ();
+}
+
+
+// Shamelessly stolen from Qt
+QString KCHMViewWindow_QTextBrowser::decodeUrl( const QString &input )
+{
+	QString temp;
+
+    int i = 0;
+	int len = input.length();
+	int a, b;
+	QChar c;
+	while (i < len)
+	{
+		c = input[i];
+		if (c == '%' && i + 2 < len)
+		{
+			a = input[++i];
+			b = input[++i];
+
+			if (a >= '0' && a <= '9') a -= '0';
+			else if (a >= 'a' && a <= 'f') a = a - 'a' + 10;
+			else if (a >= 'A' && a <= 'F') a = a - 'A' + 10;
+
+			if (b >= '0' && b <= '9') b -= '0';
+			else if (b >= 'a' && b <= 'f') b  = b - 'a' + 10;
+			else if (b >= 'A' && b <= 'F') b  = b - 'A' + 10;
+
+			temp.append( (QChar)((a << 4) | b ) );
+		}
+		else
+		{
+			temp.append( c );
+		}
+
+		++i;
+	}
+
+    return temp;
+}
+
+QPopupMenu * KCHMViewWindow_QTextBrowser::createPopupMenu( const QPoint & pos )
+{
+	KQPopupMenu * menu = getContextMenu( anchorAt( pos ), this );
+	menu->exec( mapToGlobal( contentsToViewport( pos ) ) );
+	return 0;
+}
+
+#include "kchmviewwindow_qtextbrowser.moc"