src/tooltipmanager.cpp

   1 /*******************************************************************************
   2  *   Copyright (C) 2008 by Konstantin Heil <konst.heil@stud.uni-heidelberg.de> *
   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 "tooltipmanager.h"
  21
  22 #include "dolphinmodel.h"
  23 #include "dolphinsortfilterproxymodel.h"
  24 #include "ktooltip.h"
  25 #include "kicon.h"
  26
  27 #include <QTimer>
  28
  29 ToolTipManager::ToolTipManager(QAbstractItemView* parent,
  30                                DolphinSortFilterProxyModel* model) :
  31     QObject(parent),
  32     m_view(parent),
  33     m_dolphinModel(0),
  34     m_proxyModel(model),
  35     m_timer(0),
  36     m_item(),
  37     m_pos(),
  38     m_delegate()
  39 {
  40     KToolTip::setToolTipDelegate(&m_delegate);
  41
  42     m_dolphinModel = static_cast<DolphinModel*>(m_proxyModel->sourceModel());
  43     connect(parent, SIGNAL(entered(const QModelIndex&)),
  44             this, SLOT(requestToolTip(const QModelIndex&)));
  45     connect(parent, SIGNAL(viewportEntered()),
  46             this, SLOT(hideToolTip()));
  47
  48     m_timer = new QTimer(this);
  49     m_timer->setSingleShot(true);
  50     connect(m_timer, SIGNAL(timeout()),
  51             this, SLOT(showToolTip()));
  52
  53     m_view->viewport()->installEventFilter(this);
  54 }
  55
  56 ToolTipManager::~ToolTipManager()
  57 {
  58 }
  59
  60 bool ToolTipManager::eventFilter(QObject* watched, QEvent* event)
  61 {
  62     if ((watched == m_view->viewport()) && (event->type() == QEvent::Leave)) {
  63         hideToolTip();
  64     }
  65
  66     return QObject::eventFilter(watched, event);
  67 }
  68
  69 void ToolTipManager::requestToolTip(const QModelIndex& index)
  70 {
  71     KToolTip::hideTip();
  72
  73     const QRect rect = m_view->visualRect(index);
  74     m_pos = m_view->viewport()->mapToGlobal(rect.bottomRight());
  75
  76     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
  77     m_item = m_dolphinModel->itemForIndex(dirIndex);
  78
  79     m_timer->start(500);
  80 }
  81
  82 void ToolTipManager::hideToolTip()
  83 {
  84     m_timer->stop();
  85     KToolTip::hideTip();
  86 }
  87
  88 void ToolTipManager::showToolTip()
  89 {
  90     KToolTipItem* tip = new KToolTipItem(KIcon(m_item.iconName()), m_item.getToolTipText());
  91     KToolTip::showTip(m_pos, tip);
  92 }
  93
  94 #include "tooltipmanager.moc"