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
  25 #include <kformattedballoontipdelegate.h>
  26 #include <kicon.h>
  27 #include <ktooltip.h>
  28
  29 #include <QTimer>
  30
  31 K_GLOBAL_STATIC(KFormattedBalloonTipDelegate, g_delegate)
  32
  33 ToolTipManager::ToolTipManager(QAbstractItemView* parent,
  34                                DolphinSortFilterProxyModel* model) :
  35     QObject(parent),
  36     m_view(parent),
  37     m_dolphinModel(0),
  38     m_proxyModel(model),
  39     m_timer(0),
  40     m_item(),
  41     m_pos()
  42 {
  43     KToolTip::setToolTipDelegate(g_delegate);
  44
  45     m_dolphinModel = static_cast<DolphinModel*>(m_proxyModel->sourceModel());
  46     connect(parent, SIGNAL(entered(const QModelIndex&)),
  47             this, SLOT(requestToolTip(const QModelIndex&)));
  48     connect(parent, SIGNAL(viewportEntered()),
  49             this, SLOT(hideToolTip()));
  50
  51     m_timer = new QTimer(this);
  52     m_timer->setSingleShot(true);
  53     connect(m_timer, SIGNAL(timeout()),
  54             this, SLOT(showToolTip()));
  55
  56     m_view->viewport()->installEventFilter(this);
  57 }
  58
  59 ToolTipManager::~ToolTipManager()
  60 {
  61 }
  62
  63 void ToolTipManager::hideTip()
  64 {
  65     hideToolTip();
  66 }
  67
  68 bool ToolTipManager::eventFilter(QObject* watched, QEvent* event)
  69 {
  70     if ((watched == m_view->viewport()) && (event->type() == QEvent::Leave)) {
  71         hideToolTip();
  72     }
  73
  74     return QObject::eventFilter(watched, event);
  75 }
  76
  77 void ToolTipManager::requestToolTip(const QModelIndex& index)
  78 {
  79     KToolTip::hideTip();
  80
  81     const QRect rect = m_view->visualRect(index);
  82     m_pos = m_view->viewport()->mapToGlobal(rect.bottomRight());
  83
  84     const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
  85     m_item = m_dolphinModel->itemForIndex(dirIndex);
  86
  87     m_timer->start(500);
  88 }
  89
  90 void ToolTipManager::hideToolTip()
  91 {
  92     m_timer->stop();
  93     KToolTip::hideTip();
  94 }
  95
  96 void ToolTipManager::showToolTip()
  97 {
  98     KToolTipItem* tip = new KToolTipItem(KIcon(m_item.iconName()), m_item.getToolTipText());
  99     KToolTip::showTip(m_pos, tip);
 100 }
 101
 102 #include "tooltipmanager.moc"