File indexing completed on 2024-05-12 04:20:45

 /*
  * SPDX-FileCopyrightText: 2001-2015 Klaralvdalens Datakonsult AB. All rights reserved.
  *
  * This file is part of the KGantt library.
  *
  * SPDX-License-Identifier: GPL-2.0-or-later
  */
 
 #include "kgantttreeviewrowcontroller.h"
 #include "kgantttreeviewrowcontroller_p.h"
 
 #include <QAbstractProxyModel>
 #include <QHeaderView>
 #include <QScrollBar>
 
 #include <cassert>
 
 using namespace KGantt;
 
 
 
 TreeViewRowController::TreeViewRowController( QTreeView* tv,
                           QAbstractProxyModel* proxy )
   : _d( new Private )
 {
     _d->treeview = static_cast<Private::HackTreeView*>(tv);
     _d->proxy = proxy;
 }
 
 TreeViewRowController::~TreeViewRowController()
 {
     delete _d; _d = nullptr;
 }
 
 #define d d_func()
 
 int TreeViewRowController::headerHeight() const
 {
   //return d->treeview->header()->sizeHint().height();
     return d->treeview->viewport()->y()-d->treeview->frameWidth();
 }
 
 int TreeViewRowController::maximumItemHeight() const
 {
     return d->treeview->fontMetrics().height();
 }
 
 int TreeViewRowController::totalHeight() const
 {
     return d->treeview->verticalScrollBar()->maximum()+d->treeview->viewport()->height();
 }
 
 bool TreeViewRowController::isRowVisible( const QModelIndex& _idx ) const
 {
   //qDebug() << _idx.model()<<d->proxy << d->treeview->model();
     const QModelIndex idx = d->proxy->mapToSource( _idx );
     assert( idx.isValid() ? ( idx.model() == d->treeview->model() ):( true ) );
     return d->treeview->visualRect(idx).isValid();
 }
 
 bool TreeViewRowController::isRowExpanded( const QModelIndex& _idx ) const
 {
     const QModelIndex idx = d->proxy->mapToSource( _idx );
     assert( idx.isValid() ? ( idx.model() == d->treeview->model() ):( true ) );
     return d->treeview->isExpanded( idx );
 }
 
 Span TreeViewRowController::rowGeometry( const QModelIndex& _idx ) const
 {
     const QModelIndex idx = d->proxy->mapToSource( _idx );
     assert( idx.isValid() ? ( idx.model() == d->treeview->model() ):( true ) );
     QRect r = d->treeview->visualRect(idx).translated( QPoint( 0, d->treeview->verticalOffset() ) );
     return Span( r.y(), r.height() );
 }
 
 QModelIndex TreeViewRowController::indexAt( int height ) const
 {
   /* using indexAt( QPoint ) won't work here, since it does hit detection
    *   against the actual item text/icon, so we would return wrong values
    *   for items with no text etc.
    *
    *   The code below could cache for performance, but currently it doesn't
    *   seem to be the performance bottleneck at all.
    */
     if ( !d->treeview->model() ) return QModelIndex();
     int y = d->treeview->verticalOffset();
     QModelIndex idx = d->treeview->model()->index( 0, 0, d->treeview->rootIndex() );
     do {
         if ( y >= height ) break;
         y += d->treeview->rowHeight( idx );
         idx = d->treeview->indexBelow( idx );
     } while ( idx.isValid() );
     return d->proxy->mapFromSource( idx );
 }
 
 QModelIndex TreeViewRowController::indexAbove( const QModelIndex& _idx ) const
 {
     const QModelIndex idx = d->proxy->mapToSource( _idx );
     return d->proxy->mapFromSource( d->treeview->indexAbove( idx ) );
 }
 
 QModelIndex TreeViewRowController::indexBelow( const QModelIndex& _idx ) const
 {
     const QModelIndex idx = d->proxy->mapToSource( _idx );
     return d->proxy->mapFromSource( d->treeview->indexBelow( idx ) );
 }