?? browser.cpp
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/******************************************************************************** Copyright (C) 1992-$THISYEAR$ Trolltech AS. All rights reserved.**** This file is part of the $MODULE$ of the Qt Toolkit.**** $LICENSE$**** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.******************************************************************************/#include "browser.h"#include "editor.h"#include "q3richtext_p.h"//Added by qt3to4:#include <QMouseEvent>#include <QKeyEvent>#include <QEvent>EditorBrowser::EditorBrowser( Editor *e ) : curEditor( e ), oldHighlightedParag( 0 ){ curEditor = e; QFont fn( curEditor->font() ); fn.setUnderline( true ); highlightedFormat = new Q3TextFormat( fn, Qt::blue );}EditorBrowser::~EditorBrowser(){ delete highlightedFormat;}bool EditorBrowser::eventFilter( QObject *o, QEvent *e ){ if ( qobject_cast<Editor*>(o->parent()) || qobject_cast<Editor*>(o) ) { QMouseEvent *me; QKeyEvent *ke; switch ( e->type() ) { case QEvent::MouseMove: me = (QMouseEvent*)e; if ( ( me->state() & Qt::ControlModifier ) == Qt::ControlModifier ) { curEditor->viewport()->setCursor( Qt::PointingHandCursor ); Q3TextCursor c( curEditor->document() ); curEditor->placeCursor( curEditor->viewportToContents( me->pos() ), &c ); Q3TextCursor from, to; if ( oldHighlightedParag ) { oldHighlightedParag->setEndState( -1 ); oldHighlightedParag->format(); oldHighlightedParag = 0; } if ( findCursor( c, from, to ) && from.paragraph() == to.paragraph() ) { // avoid collision with other selections for ( int i = 0; i < curEditor->document()->numSelections(); ++i ) curEditor->document()->removeSelection( i ); from.paragraph()->setFormat( from.index(), to.index() - from.index() + 1, highlightedFormat, false ); lastWord = from.paragraph()->string()->toString().mid( from.index(), to.index() - from.index() + 1 ); oldHighlightedParag = from.paragraph(); } else { lastWord = ""; } curEditor->repaintChanged(); return true; } break; case QEvent::MouseButtonPress: { bool killEvent = !lastWord.isEmpty(); if ( !lastWord.isEmpty() ) showHelp( lastWord ); lastWord = ""; curEditor->viewport()->setCursor( Qt::IBeamCursor ); if ( oldHighlightedParag ) { oldHighlightedParag->setEndState( -1 ); oldHighlightedParag->format(); curEditor->repaintChanged(); oldHighlightedParag = 0; } if ( killEvent ) return true; } break; case QEvent::KeyRelease: lastWord = ""; ke = (QKeyEvent*)e; if ( ke->key() == Qt::Key_Control ) { curEditor->viewport()->setCursor( Qt::IBeamCursor ); if ( oldHighlightedParag ) { oldHighlightedParag->setEndState( -1 ); oldHighlightedParag->format(); curEditor->repaintChanged(); oldHighlightedParag = 0; } } default: break; } } return false;}void EditorBrowser::setCurrentEdior( Editor *e ){ curEditor = e; curEditor->installEventFilter( this );}void EditorBrowser::addEditor( Editor *e ){ e->installEventFilter( this );}bool EditorBrowser::findCursor( const Q3TextCursor &c, Q3TextCursor &from, Q3TextCursor &to ){ from = c; while ( from.paragraph()->at( from.index() )->c != ' ' && from.paragraph()->at( from.index() )->c != '\t' && from.index() > 0 ) from.gotoLeft(); if ( from.paragraph()->at( from.index() )->c == ' ' || from.paragraph()->at( from.index() )->c == '\t' ) from.gotoRight(); to = c; while ( to.paragraph()->at( to.index() )->c != ' ' && to.paragraph()->at( to.index() )->c != '\t' && to.index() < to.paragraph()->length() - 1 ) to.gotoRight(); if ( to.paragraph()->at( to.index() )->c == ' ' || to.paragraph()->at( to.index() )->c == '\t' ) to.gotoLeft(); return true;}
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