kdgantt2/kdganttlistviewrowcontroller.cpp

   1 /****************************************************************************
   2  ** Copyright (C) 2001-2006 Klarälvdalens Datakonsult AB.  All rights reserved.
   3  **
   4  ** This file is part of the KD Gantt library.
   5  **
   6  ** This file may be distributed and/or modified under the terms of the
   7  ** GNU General Public License version 2 as published by the Free Software
   8  ** Foundation and appearing in the file LICENSE.GPL included in the
   9  ** packaging of this file.
  10  **
  11  ** Licensees holding valid commercial KD Gantt licenses may use this file in
  12  ** accordance with the KD Gantt Commercial License Agreement provided with
  13  ** the Software.
  14  **
  15  ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
  16  ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  17  **
  18  ** See http://www.kdab.net/kdgantt for
  19  **   information about KD Gantt Commercial License Agreements.
  20  **
  21  ** Contact info@kdab.net if any conditions of this
  22  ** licensing are not clear to you.
  23  **
  24  **********************************************************************/
  25 #include "kdganttlistviewrowcontroller.h"
  26 #include "kdganttlistviewrowcontroller_p.h"
  27
  28 #include <QAbstractProxyModel>
  29 #include <QScrollBar>
  30
  31 #include <cassert>
  32
  33 using namespace KDGantt;
  34
  35 /*!\class TreeViewRowController
  36  * This is an implementation of AbstractRowController that
  37  * aligns a gantt view with a QListView. Provided for
  38  * convenience for users who want to use View with QListView
  39  * instead of QTreeView.
  40  */
  41
  42 ListViewRowController::ListViewRowController( QListView* lv, QAbstractProxyModel* proxy )
  43   : _d( new Private(lv,proxy) )
  44 {
  45 }
  46
  47 ListViewRowController::~ListViewRowController()
  48 {
  49     delete _d; _d = 0;
  50 }
  51
  52 #define d d_func()
  53
  54 int ListViewRowController::headerHeight() const
  55 {
  56     return d->listview->viewport()->y()-d->listview->frameWidth();
  57 }
  58
  59 int ListViewRowController::maximumItemHeight() const
  60 {
  61     return d->listview->fontMetrics().height();
  62 }
  63
  64 int ListViewRowController::totalHeight() const
  65 {
  66     return d->listview->verticalScrollBar()->maximum()+d->listview->viewport()->height();
  67 }
  68
  69 bool ListViewRowController::isRowVisible( const QModelIndex& _idx ) const
  70 {
  71     const QModelIndex idx = d->proxy->mapToSource( _idx );
  72     assert( idx.isValid() ? ( idx.model() == d->listview->model() ):( true ) );
  73     return d->listview->visualRect(idx).isValid();
  74 }
  75
  76 bool ListViewRowController::isRowExpanded( const QModelIndex& _idx ) const
  77 {
  78     return false;
  79 }
  80
  81 Span ListViewRowController::rowGeometry( const QModelIndex& _idx ) const
  82 {
  83     const QModelIndex idx = d->proxy->mapToSource( _idx );
  84     assert( idx.isValid() ? ( idx.model() == d->listview->model() ):( true ) );
  85     QRect r = d->listview->visualRect(idx).translated( QPoint( 0,
  86                   static_cast<Private::HackListView*>(d->listview)->verticalOffset() ) );
  87     return Span( r.y(), r.height() );
  88 }
  89
  90 QModelIndex ListViewRowController::indexAt( int height ) const
  91 {
  92     return d->proxy->mapFromSource( d->listview->indexAt( QPoint( 1,height ) ) );
  93 }
  94
  95 QModelIndex ListViewRowController::indexAbove( const QModelIndex& _idx ) const
  96 {
  97     const QModelIndex idx = d->proxy->mapToSource( _idx );
  98     return d->proxy->mapFromSource( idx.sibling( idx.row()-1, idx.column()) );
  99 }
 100
 101 QModelIndex ListViewRowController::indexBelow( const QModelIndex& _idx ) const
 102 {
 103     const QModelIndex idx = d->proxy->mapToSource( _idx );
 104     if( !idx.isValid() || idx.column()!=0 ) return QModelIndex();
 105     if( idx.model()->rowCount(idx.parent())<idx.row()+1 ) return QModelIndex();
 106     return d->proxy->mapFromSource( idx.sibling( idx.row()+1, idx.column()) );
 107 }
 108