mirror of
https://bitbucket.org/smil3y/kde-playground.git
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131 lines
4.4 KiB
C++
131 lines
4.4 KiB
C++
/****************************************************************************
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** Copyright (C) 2001-2006 Klarälvdalens Datakonsult AB. All rights reserved.
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**
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** This file is part of the KD Gantt library.
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**
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** This file may be distributed and/or modified under the terms of the
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** GNU General Public License version 2 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file.
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**
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** Licensees holding valid commercial KD Gantt licenses may use this file in
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** accordance with the KD Gantt Commercial License Agreement provided with
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** the Software.
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**
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** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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**
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** See http://www.kdab.net/kdgantt for
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** information about KD Gantt Commercial License Agreements.
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**
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** Contact info@kdab.net if any conditions of this
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** licensing are not clear to you.
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**
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**********************************************************************/
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#include "kdgantttreeviewrowcontroller.h"
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#include "kdgantttreeviewrowcontroller_p.h"
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#include <QAbstractProxyModel>
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#include <QHeaderView>
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#include <QScrollBar>
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#include <cassert>
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using namespace KDGantt;
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/*!\class TreeViewRowController
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* This is an implementation of AbstractRowController that
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* aligns a gantt view with a QTreeView.
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*/
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TreeViewRowController::TreeViewRowController( QTreeView* tv,
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QAbstractProxyModel* proxy )
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: _d( new Private )
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{
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_d->treeview = static_cast<Private::HackTreeView*>(tv);
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_d->proxy = proxy;
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}
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TreeViewRowController::~TreeViewRowController()
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{
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delete _d; _d=0;
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}
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#define d d_func()
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int TreeViewRowController::headerHeight() const
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{
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//return d->treeview->header()->sizeHint().height();
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return d->treeview->viewport()->y()-d->treeview->frameWidth();
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}
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int TreeViewRowController::maximumItemHeight() const
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{
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return d->treeview->fontMetrics().height();
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}
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int TreeViewRowController::totalHeight() const
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{
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return d->treeview->verticalScrollBar()->maximum()+d->treeview->viewport()->height();
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}
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bool TreeViewRowController::isRowVisible( const QModelIndex& _idx ) const
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{
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//qDebug() << _idx.model()<<d->proxy << d->treeview->model();
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const QModelIndex idx = d->proxy->mapToSource( _idx );
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assert( idx.isValid() ? ( idx.model() == d->treeview->model() ):( true ) );
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return d->treeview->visualRect(idx).isValid();
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}
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bool TreeViewRowController::isRowExpanded( const QModelIndex& _idx ) const
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{
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const QModelIndex idx = d->proxy->mapToSource( _idx );
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assert( idx.isValid() ? ( idx.model() == d->treeview->model() ):( true ) );
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return d->treeview->isExpanded( idx );
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}
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Span TreeViewRowController::rowGeometry( const QModelIndex& _idx ) const
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{
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const QModelIndex idx = d->proxy->mapToSource( _idx );
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assert( idx.isValid() ? ( idx.model() == d->treeview->model() ):( true ) );
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QRect r = d->treeview->visualRect(idx).translated( QPoint( 0, d->treeview->verticalOffset() ) );
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return Span( r.y(), r.height() );
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}
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QModelIndex TreeViewRowController::indexAt( int height ) const
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{
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/* using indexAt( QPoint ) wont work here, since it does hit detection
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* against the actual item text/icon, so we would return wrong values
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* for items with no text etc.
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*
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* The code below could cache for performance, but currently it doesn't
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* seem to be the performance bottleneck at all.
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*/
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if ( !d->treeview->model() ) return QModelIndex();
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int y = d->treeview->verticalOffset();
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QModelIndex idx = d->treeview->model()->index( 0, 0, d->treeview->rootIndex() );
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do {
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if ( y >= height ) break;
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#if QT_VERSION >= 0x040300
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y += d->treeview->rowHeight( idx );
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#else
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// Since TreeViewRowController is NOT using uniform row height
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// we can use this:
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y += d->treeview->indexRowSizeHint( idx );
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#endif
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idx = d->treeview->indexBelow( idx );
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} while ( idx.isValid() );
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return d->proxy->mapFromSource( idx );
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}
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QModelIndex TreeViewRowController::indexAbove( const QModelIndex& _idx ) const
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{
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const QModelIndex idx = d->proxy->mapToSource( _idx );
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return d->proxy->mapFromSource( d->treeview->indexAbove( idx ) );
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}
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QModelIndex TreeViewRowController::indexBelow( const QModelIndex& _idx ) const
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{
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const QModelIndex idx = d->proxy->mapToSource( _idx );
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return d->proxy->mapFromSource( d->treeview->indexBelow( idx ) );
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}
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