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401 lines
12 KiB
401 lines
12 KiB
/*
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* Copyright (c) 2002-2003 Jesper K. Pedersen <blackie@kde.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License version 2 as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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**/
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#include "concregexp.h"
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#include "concwidget.h"
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#include "dragaccepter.h"
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#include <tqpainter.h>
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ConcWidget::ConcWidget(RegExpEditorWindow* editorWindow, TQWidget *parent,
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const char *name)
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:MultiContainerWidget(editorWindow, parent, name == 0 ? "concwidget" : name)
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{
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init();
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DragAccepter *accepter = new DragAccepter(editorWindow, this);
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accepter->show();
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_children.append(accepter);
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}
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ConcWidget::ConcWidget(RegExpEditorWindow* editorWindow, RegExpWidget *child,
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TQWidget *parent, const char *name)
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:MultiContainerWidget(editorWindow, parent, name == 0 ? "concwidget" : name)
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{
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init();
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DragAccepter *accepter = new DragAccepter(editorWindow, this);
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_children.append(accepter);
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child->reparent(this, TQPoint(0,0), false);
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addNewChild(accepter, child);
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}
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ConcWidget::ConcWidget( RegExpEditorWindow* editorWindow, ConcWidget* origConc,
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unsigned int start, unsigned int end)
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:MultiContainerWidget(editorWindow, 0, "Splitted ConcWidget")
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{
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init();
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_children.prepend( new DragAccepter(editorWindow, this) );
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for (unsigned int i = end; i >= start; i--) {
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RegExpWidget* child = origConc->_children.take( i );
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_children.prepend( child );
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child->reparent( this, TQPoint(0,0), false);
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}
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_children.prepend( new DragAccepter(editorWindow, this) );
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}
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ConcWidget::ConcWidget( ConcRegExp* regexp, RegExpEditorWindow* editorWindow,
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TQWidget* parent, const char* name )
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:MultiContainerWidget( editorWindow, parent, name == 0 ? "concwidget" : name )
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{
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init();
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DragAccepter *accepter = new DragAccepter(editorWindow, this);
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_children.append(accepter);
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RegExpList list = regexp->children();
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for ( RegExpListIt it(list); *it; ++it ) {
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RegExpWidget* child = WidgetFactory::createWidget( *it, editorWindow, this );
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append( child );
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}
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}
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void ConcWidget::init()
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{
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_maxSelectedHeight = 0;
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}
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TQSize ConcWidget::sizeHint() const
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{
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int childrenWidth = 0;
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int childrenHeight = 0;
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TQPtrListIterator<RegExpWidget> it(_children);
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for ( ; *it; ++it) {
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TQSize thisChildSize = (*it)->sizeHint();
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childrenWidth += thisChildSize.width();
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childrenHeight = QMAX(childrenHeight, thisChildSize.height());
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}
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return TQSize(childrenWidth, childrenHeight);
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}
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void ConcWidget::paintEvent( TQPaintEvent *e)
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{
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Q_ASSERT( dynamic_cast<DragAccepter*>(_children.at(0)) );
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// if this fails, then I should check the location of the show()
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Q_ASSERT( _children.count() == 1 ||
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( _children.count() >=3 &&
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dynamic_cast<DragAccepter*>(_children.at(_children.count()-1)) ) );
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if ( _children.count() == 1) {
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// There is only an accepter, lets give it all the space.
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_children.at(0)->setGeometry( 0, 0, size().width(), size().height() );
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}
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else {
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TQSize myReqSize = sizeHint();
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TQSize mySize(QMAX(myReqSize.width(), size().width()),
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QMAX(myReqSize.height(), size().height()));
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// If the widget needs less space than it can get then this space should
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// be given to the leftmost and rightmost accepter. So lets calculate
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// this extra space.
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int extra = 0;
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if (size().width() > myReqSize.width()) {
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extra = (size().width() - myReqSize.width())/2;
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}
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TQPainter painter( this );
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drawPossibleSelection( painter, mySize );
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int lastHeight = 0;
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int offset = 0;
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for (unsigned int i = 1; i < _children.count(); i += 2 ) {
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DragAccepter* accepter = dynamic_cast<DragAccepter*>(_children.at(i-1));
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if (!accepter)
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continue;
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RegExpWidget* child = _children.at(i);
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TQSize childSize = child->sizeHint();
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TQSize curChildSize = child->size();
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//----------------------------- first place the accepter
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int x = offset;
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int w = accepter->sizeHint().width();
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if ( i == 1 ) w+= extra;
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int h = QMAX( lastHeight, childSize.height() );
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int y = (mySize.height() - h)/2;
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accepter->setGeometry( x, y, w, h );
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offset += w;
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lastHeight = childSize.height();
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//------------------------------ Draw Accepter selection
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if ( accepter->isSelected() ) {
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y = (mySize.height()-_maxSelectedHeight)/2;
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h = _maxSelectedHeight;
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painter.fillRect( x, y, w, h, TQBrush( gray ) );
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}
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//-------------------------------------- place the child
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x = offset;
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h = childSize.height();
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w = childSize.width();
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y = (mySize.height() - h)/2;
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child->setGeometry( x, y, w, h );
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if ( childSize != curChildSize ) {
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// I resized the child, so give it a chance to relect thus.
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child->update();
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}
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offset += w;
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//------------------------------ Draw Accepter selection
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if ( child->isSelected() ) {
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y = (mySize.height()-_maxSelectedHeight)/2;
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h = _maxSelectedHeight;
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painter.fillRect( x, y, w, h, TQBrush( gray ) );
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}
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}
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//---------------------- Finally place the last accepter.
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DragAccepter* accepter =
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dynamic_cast<DragAccepter*>(_children.at(_children.count()-1));
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// dynamic_cast is ASSERTed at top
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int x = offset;
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int h = lastHeight;
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int w = accepter->sizeHint().width() + extra;
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int y = (mySize.height()-h)/2;
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accepter->setGeometry( x, y, w, h );
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}
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MultiContainerWidget::paintEvent( e );
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}
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void ConcWidget::mousePressEvent ( TQMouseEvent* event )
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{
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if ( event->button() == RightButton ) {
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_editorWindow->showRMBMenu( _editorWindow->hasSelection() );
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}
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else {
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RegExpWidget::mousePressEvent( event );
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}
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}
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void ConcWidget::sizeAccepter( DragAccepter* accepter, int height, int totHeight )
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{
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if (accepter->height() != height ) {
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accepter->resize( accepter->width(), height );
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}
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if (accepter->y() != (totHeight - height)/2) {
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accepter->move( accepter->x(), (totHeight - height)/2 );
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}
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}
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RegExp* ConcWidget::regExp() const
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{
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TQPtrListIterator<RegExpWidget> it( _children );
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++it; // start with the second element.
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if ( _children.count() == 3 ) {
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// Exactly one child (and two drag accepters)
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return (*it)->regExp();
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}
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else {
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ConcRegExp *regexp = new ConcRegExp( isSelected() );
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for ( ; *it; it+=2 ) {
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regexp->addRegExp( (*it)->regExp() );
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}
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return regexp;
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}
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}
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bool ConcWidget::updateSelection(bool parentSelected)
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{
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bool isSel = _isSelected;
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bool changed = MultiContainerWidget::updateSelection( parentSelected );
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_maxSelectedHeight = 0;
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TQPtrListIterator<RegExpWidget> it(_children);
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++it; // Skip past the first DragAccepter
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for ( ; *it; it +=2 ) {
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if ( (*it)->isSelected() ) {
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_maxSelectedHeight = QMAX( _maxSelectedHeight, (*it)->sizeHint().height() );
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}
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}
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changed = changed || isSel != _isSelected;
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if ( changed ) {
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repaint();
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}
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return changed;
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}
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void ConcWidget::getSelectionIndexes( int* start, int* end )
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{
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*start = -1;
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*end = -1;
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// Start with element at index 1, and skip every second element, as we
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// know they are dragAccepters.
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for ( unsigned int index = 1; index< _children.count(); index += 2 ) {
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RegExpWidget* child = _children.at(index);
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if ( child->isSelected() ) {
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// The child is selected at topmost level.
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if ( *start == -1 ) {
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*start = index;
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}
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}
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else if ( *start != -1 ) {
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// Found the end of the selection.
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*end = index -2;
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break;
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}
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}
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if ( *start != -1 && *end == -1 )
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*end = _children.count() -2;
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}
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void ConcWidget::applyRegExpToSelection( RegExpType type )
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{
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int start, end;
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getSelectionIndexes( &start, &end );
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if ( start == -1 ) {
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// No item selected at top level
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TQPtrListIterator<RegExpWidget> it(_children);
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++it; // Skip past the first DragAccepter
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for ( ; *it ; it += 2 ) {
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if ( (*it)->hasSelection() ) {
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(*it)->applyRegExpToSelection( type );
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break;
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}
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}
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}
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else {
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// Apply RegExp to selection.
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RegExpWidget* newElm = WidgetFactory::createWidget( _editorWindow, this, type );
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if ( newElm ) {
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ConcWidget* subSequence = new ConcWidget(_editorWindow, this, start, end);
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newElm->setConcChild( subSequence );
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subSequence->resize(0,0); // see note (1)
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subSequence->reparent( newElm, TQPoint(0,0), false);
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_children.insert( start, newElm );
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newElm->show();
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}
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}
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}
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bool ConcWidget::isSelected() const
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{
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// A ConcWidget should be considered selected when all its elements has been selected
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// otherwise empty ConcWidgets may be left behind when for example selection is deleted.
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bool allSelected = true;
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TQPtrListIterator<RegExpWidget> it(_children);
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++it; // Skip past first DragAccepter.
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for ( ; *it && allSelected; it += 2 ) {
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allSelected = allSelected && (*it)->isSelected();
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}
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return allSelected;
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}
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RegExp* ConcWidget::selection() const
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{
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if ( isSelected() )
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return regExp();
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bool foundAny = false;
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bool foundMoreThanOne = false;
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RegExp* regexp = 0;
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TQPtrListIterator<RegExpWidget> it(_children);
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++it; // Skip past the first DragAccepter
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for ( ; (*it) ; it += 2 ) {
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if ( (*it)->hasSelection() ) {
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if (!foundAny) {
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regexp = (*it)->selection();
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foundAny = true;
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}
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else if ( !foundMoreThanOne ) {
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ConcRegExp* reg = new ConcRegExp( isSelected() );
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reg->addRegExp( regexp );
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reg->addRegExp( (*it)->selection() );
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regexp = reg;
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foundMoreThanOne = true;
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}
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else {
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dynamic_cast<ConcRegExp*>(regexp)->addRegExp( (*it)->selection() );
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}
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}
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}
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Q_ASSERT( foundAny );
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return regexp;
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}
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void ConcWidget::addNewConcChild(DragAccepter *accepter, ConcWidget *other)
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{
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for ( unsigned int i=0; i<_children.count(); i+= 2 ) {
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RegExpWidget *ch = _children.at( i );
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if ( ch == accepter ) {
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// Move all the element from the `child' ConcWidget to this one.
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// Do not copy the first one as this is a dragAccepter, and we place the widgets
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// after this drag accepter.
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// We must take them in pairs to avoid breaking the invariant for paintEvent,
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// namely that every second element is a dragAccepter
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for ( unsigned int j = other->_children.count()-1; j > 0 ; j-=2 ) {
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RegExpWidget* newChildA = other->_children.take(j);
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newChildA->reparent( this, TQPoint(0,0), false);
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_children.insert( i+1, newChildA );
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RegExpWidget* newChildB = other->_children.take(j-1);
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newChildB->reparent( this, TQPoint(0,0), false);
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_children.insert( i+1, newChildB );
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newChildA->show();
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newChildB->show();
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}
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delete other;
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return;
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}
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}
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qFatal("accepter not found");
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}
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bool ConcWidget::validateSelection() const
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{
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bool cont = true;
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TQPtrListIterator<RegExpWidget> it(_children);
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++it; // skip past the DragAccepter.
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for ( ; *it && cont; it += 2 ) {
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cont = (*it)->validateSelection();
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}
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return cont;
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}
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