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/**********************************************************************
** Copyright (C) 2005-2008 Trolltech ASA. All rights reserved.
**
** This file is part of TQt Designer.
**
** This file may be used under the terms of the GNU General
** Public License versions 2.0 or 3.0 as published by the Free
** Software Foundation and appearing in the files LICENSE.GPL2
** and LICENSE.GPL3 included in the packaging of this file.
** Alternatively you may (at your option) use any later version
** of the GNU General Public License if such license has been
** publicly approved by Trolltech ASA (or its successors, if any)
** and the KDE Free TQt Foundation.
**
** Please review the following information to ensure GNU General
** Public Licensing retquirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/.
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
** or contact the sales department at sales@trolltech.com.
**
** Licensees holding valid TQt Commercial licenses may use this file in
** accordance with the TQt Commercial License Agreement provided with
** the Software.
**
** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
** herein.
**
**********************************************************************/
#include "browser.h"
#include "editor.h"
#include <private/qrichtext_p.h>
EditorBrowser::EditorBrowser( Editor *e )
: curEditor( e ), oldHighlightedParag( 0 )
{
curEditor = e;
// ### disabled for now
// curEditor->viewport()->installEventFilter( this );
// curEditor->installEventFilter( this );
TQFont fn( curEditor->font() );
fn.setUnderline( TRUE );
highlightedFormat = new TQTextFormat( fn, blue );
}
EditorBrowser::~EditorBrowser()
{
delete highlightedFormat;
}
bool EditorBrowser::eventFilter( TQObject *o, TQEvent *e )
{
if ( ::qt_cast<Editor*>(o->parent()) || ::qt_cast<Editor*>(o) ) {
TQMouseEvent *me;
TQKeyEvent *ke;
switch ( e->type() ) {
case TQEvent::MouseMove:
me = (TQMouseEvent*)e;
if ( ( me->state() & ControlButton ) == ControlButton ) {
curEditor->viewport()->setCursor( pointingHandCursor );
TQTextCursor c( curEditor->document() );
curEditor->placeCursor( curEditor->viewportToContents( me->pos() ), &c );
TQTextCursor 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 TQEvent::MouseButtonPress: {
bool killEvent = !lastWord.isEmpty();
if ( !lastWord.isEmpty() )
showHelp( lastWord );
lastWord = "";
curEditor->viewport()->setCursor( ibeamCursor );
if ( oldHighlightedParag ) {
oldHighlightedParag->setEndState( -1 );
oldHighlightedParag->format();
curEditor->repaintChanged();
oldHighlightedParag = 0;
}
if ( killEvent )
return TRUE;
} break;
case TQEvent::KeyRelease:
lastWord = "";
ke = (TQKeyEvent*)e;
if ( ke->key() == Key_Control ) {
curEditor->viewport()->setCursor( 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 TQTextCursor &c, TQTextCursor &from, TQTextCursor &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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