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         const int gap = 2;
  72         const int x = rect.right() - m_toggle->width() - gap;
  73         int y = rect.top();
  74         if (rect.height() <= m_toggle->height() * 2) {
  75             // center the button vertically
  76             y += (rect.height() - m_toggle->height()) / 2;
  77         } else {
  78             y += gap;
  79         }
  80
  81         m_toggle->move(QPoint(x, y));
  82
  83         QItemSelectionModel* selModel = m_view->selectionModel();
  84         m_toggle->setChecked(selModel->isSelected(index));
  85         m_toggle->show();
  86     } else {
  87         m_toggle->setFileItem(KFileItem());
  88         disconnect(m_view->model(), SIGNAL(rowsRemoved(const QModelIndex&, int, int)),
  89                    this, SLOT(slotRowsRemoved(const QModelIndex&, int, int)));
  90     }
  91 }
  92
  93 void SelectionManager::slotViewportEntered()
  94 {
  95     m_toggle->hide();
  96 }
  97
  98 void SelectionManager::setItemSelected(bool selected)
  99 {
 100     emit selectionChanged();
 101     Q_ASSERT(!m_toggle->fileItem().isNull());
 102
 103     const QModelIndex index = indexForItem(m_toggle->fileItem());
 104     if (index.isValid()) {
 105         QItemSelectionModel* selModel = m_view->selectionModel();
 106         if (selected) {
 107             selModel->select(index, QItemSelectionModel::Select);
 108         } else {
 109             selModel->select(index, QItemSelectionModel::Deselect);
 110         }
 111     }
 112 }
 113
 114 void SelectionManager::slotRowsRemoved(const QModelIndex& parent, int start, int end)
 115 {
 116     Q_UNUSED(parent);
 117     Q_UNUSED(start);
 118     Q_UNUSED(end);
 119     m_toggle->hide();
 120 }
 121
 122 KFileItem SelectionManager::itemForIndex(const QModelIndex& index) const
 123 {
 124     QAbstractProxyModel* proxyModel = static_cast<QAbstractProxyModel*>(m_view->model());
 125     KDirModel* dirModel = static_cast<KDirModel*>(proxyModel->sourceModel());
 126     const QModelIndex dirIndex = proxyModel->mapToSource(index);
 127     return dirModel->itemForIndex(dirIndex);
 128 }
 129
 130 const QModelIndex SelectionManager::indexForItem(const KFileItem& item) const
 131 {
 132     QAbstractProxyModel* proxyModel = static_cast<QAbstractProxyModel*>(m_view->model());
 133     KDirModel* dirModel = static_cast<KDirModel*>(proxyModel->sourceModel());
 134     const QModelIndex dirIndex = dirModel->indexForItem(item);
 135     return proxyModel->mapFromSource(dirIndex);
 136 }
 137
 138 #include "selectionmanager.moc"