src/selectionmanager.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2008 by Peter Penz <peter.penz@gmx.at>                  *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  18  ***************************************************************************/
  19
  20 #include "selectionmanager.h"
  21
  22 #include "dolphinmodel.h"
  23 #include "selectiontoggle.h"
  24 #include <kdirmodel.h>
  25 #include <kiconeffect.h>
  26
  27 #include <QAbstractButton>
  28 #include <QAbstractItemView>
  29 #include <QAbstractProxyModel>
  30 #include <QModelIndex>
  31 #include <QPainter>
  32 #include <QPaintEvent>
  33 #include <QRect>
  34 #include <QTimeLine>
  35
  36 SelectionManager::SelectionManager(QAbstractItemView* parent) :
  37     QObject(parent),
  38     m_view(parent),
  39     m_toggle(0)
  40 {
  41     connect(parent, SIGNAL(entered(const QModelIndex&)),
  42             this, SLOT(slotEntered(const QModelIndex&)));
  43     connect(parent, SIGNAL(viewportEntered()),
  44             this, SLOT(slotViewportEntered()));
  45     m_toggle = new SelectionToggle(m_view->viewport());
  46     m_toggle->setCheckable(true);
  47     m_toggle->hide();
  48     connect(m_toggle, SIGNAL(clicked(bool)),
  49             this, SLOT(setItemSelected(bool)));
  50 }
  51
  52 SelectionManager::~SelectionManager()
  53 {
  54 }
  55
  56 void SelectionManager::reset()
  57 {
  58     m_toggle->reset();
  59 }
  60
  61 void SelectionManager::slotEntered(const QModelIndex& index)
  62 {
  63     m_toggle->hide();
  64     if (index.isValid() && (index.column() == DolphinModel::Name)) {
  65         m_toggle->setFileItem(itemForIndex(index));
  66
  67         connect(m_view->model(), SIGNAL(rowsRemoved(const QModelIndex&, int, int)),
  68                 this, SLOT(slotRowsRemoved(const QModelIndex&, int, int)));
  69
  70         const QRect rect = m_view->visualRect(index);
  71
  72         const int gap = 2;
  73         const int x = rect.left() + gap;
  74         const int y = rect.top() + gap;
  75         m_toggle->move(QPoint(x, y));
  76
  77         QItemSelectionModel* selModel = m_view->selectionModel();
  78         m_toggle->setChecked(selModel->isSelected(index));
  79         m_toggle->show();
  80     } else {
  81         m_toggle->setFileItem(KFileItem());
  82         disconnect(m_view->model(), SIGNAL(rowsRemoved(const QModelIndex&, int, int)),
  83                    this, SLOT(slotRowsRemoved(const QModelIndex&, int, int)));
  84     }
  85 }
  86
  87 void SelectionManager::slotViewportEntered()
  88 {
  89     m_toggle->hide();
  90 }
  91
  92 void SelectionManager::setItemSelected(bool selected)
  93 {
  94     emit selectionChanged();
  95     Q_ASSERT(!m_toggle->fileItem().isNull());
  96
  97     const QModelIndex index = indexForItem(m_toggle->fileItem());
  98     if (index.isValid()) {
  99         QItemSelectionModel* selModel = m_view->selectionModel();
 100         if (selected) {
 101             selModel->select(index, QItemSelectionModel::Select);
 102         } else {
 103             selModel->select(index, QItemSelectionModel::Deselect);
 104         }
 105     }
 106 }
 107
 108 void SelectionManager::slotRowsRemoved(const QModelIndex& parent, int start, int end)
 109 {
 110     Q_UNUSED(parent);
 111     Q_UNUSED(start);
 112     Q_UNUSED(end);
 113     m_toggle->hide();
 114 }
 115
 116 KFileItem SelectionManager::itemForIndex(const QModelIndex& index) const
 117 {
 118     QAbstractProxyModel* proxyModel = static_cast<QAbstractProxyModel*>(m_view->model());
 119     KDirModel* dirModel = static_cast<KDirModel*>(proxyModel->sourceModel());
 120     const QModelIndex dirIndex = proxyModel->mapToSource(index);
 121     return dirModel->itemForIndex(dirIndex);
 122 }
 123
 124 const QModelIndex SelectionManager::indexForItem(const KFileItem& item) const
 125 {
 126     QAbstractProxyModel* proxyModel = static_cast<QAbstractProxyModel*>(m_view->model());
 127     KDirModel* dirModel = static_cast<KDirModel*>(proxyModel->sourceModel());
 128     const QModelIndex dirIndex = dirModel->indexForItem(item);
 129     return proxyModel->mapFromSource(dirIndex);
 130 }
 131
 132 #include "selectionmanager.moc"