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/*******************************************************************************
* Copyright (C) 2008 by Konstantin Heil <[email protected]> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
*******************************************************************************/
#include "tooltipmanager.h"
#include "dolphinmodel.h"
#include "dolphinsortfilterproxymodel.h"
#include <kformattedballoontipdelegate.h>
#include <kicon.h>
#include <ktooltip.h>
#include <QApplication>
#include <QDesktopWidget>
#include <QTimer>
#include <QToolTip>
K_GLOBAL_STATIC(KFormattedBalloonTipDelegate, g_delegate)
ToolTipManager::ToolTipManager(QAbstractItemView* parent,
DolphinSortFilterProxyModel* model) :
QObject(parent),
m_view(parent),
m_dolphinModel(0),
m_proxyModel(model),
m_timer(0),
m_item(),
m_itemRect()
{
KToolTip::setToolTipDelegate(g_delegate);
m_dolphinModel = static_cast<DolphinModel*>(m_proxyModel->sourceModel());
connect(parent, SIGNAL(entered(const QModelIndex&)),
this, SLOT(requestToolTip(const QModelIndex&)));
connect(parent, SIGNAL(viewportEntered()),
this, SLOT(hideToolTip()));
m_timer = new QTimer(this);
m_timer->setSingleShot(true);
connect(m_timer, SIGNAL(timeout()),
this, SLOT(showToolTip()));
m_view->viewport()->installEventFilter(this);
}
ToolTipManager::~ToolTipManager()
{
}
void ToolTipManager::hideTip()
{
hideToolTip();
}
bool ToolTipManager::eventFilter(QObject* watched, QEvent* event)
{
if ((watched == m_view->viewport()) && (event->type() == QEvent::Leave)) {
hideToolTip();
}
return QObject::eventFilter(watched, event);
}
void ToolTipManager::requestToolTip(const QModelIndex& index)
{
if (index.column() == DolphinModel::Name) {
KToolTip::hideTip();
m_itemRect = m_view->visualRect(index);
const QPoint pos = m_view->viewport()->mapToGlobal(m_itemRect.topLeft());
m_itemRect.moveTo(pos);
const QModelIndex dirIndex = m_proxyModel->mapToSource(index);
m_item = m_dolphinModel->itemForIndex(dirIndex);
m_timer->start(500);
} else {
hideToolTip();
}
}
void ToolTipManager::hideToolTip()
{
m_timer->stop();
KToolTip::hideTip();
}
void ToolTipManager::showToolTip()
{
KToolTipItem* tip = new KToolTipItem(KIcon(m_item.iconName()), m_item.getToolTipText());
KStyleOptionToolTip option;
// TODO: get option content from KToolTip or add KToolTip::sizeHint() method
option.direction = QApplication::layoutDirection();
option.fontMetrics = QFontMetrics(QToolTip::font());
option.activeCorner = KStyleOptionToolTip::TopLeftCorner;
option.palette = QToolTip::palette();
option.font = QToolTip::font();
option.rect = QRect();
option.state = QStyle::State_None;
option.decorationSize = QSize(32, 32);
const QSize size = g_delegate->sizeHint(&option, tip);
const QRect desktop = QApplication::desktop()->availableGeometry();
// m_itemRect defines the area of the item, where the tooltip should be
// shown. Per default the tooltip is shown in the bottom right corner.
// If the tooltip content exceeds the desktop borders, it must be assured that:
// - the content is fully visible
// - the content is not drawn inside m_itemRect
int x = m_itemRect.right();
int y = m_itemRect.bottom();
const int xDiff = x + size.width() - desktop.width();
const int yDiff = y + size.height() - desktop.height();
if ((xDiff > 0) && (yDiff > 0)) {
x = m_itemRect.left() - size.width();
y = m_itemRect.top() - size.height();
} else if (xDiff > 0) {
x -= xDiff;
} else if (yDiff > 0) {
y -= yDiff;
}
KToolTip::showTip(QPoint(x, y), tip);
}
#include "tooltipmanager.moc"
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