nextcloud-desktop/src/gui/tooltipupdater.cpp
2016-03-29 12:26:09 +02:00

59 lines
1.8 KiB
C++

/*
* Copyright (C) by Christian Kamm <mail@ckamm.de>
*
* 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; version 2 of the License.
*
* 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.
*/
#include "tooltipupdater.h"
#include <QTreeView>
#include <QHelpEvent>
#include <QToolTip>
#include <QDebug>
using namespace OCC;
ToolTipUpdater::ToolTipUpdater(QTreeView* treeView)
: QObject(treeView)
, _treeView(treeView)
{
connect(_treeView->model(), SIGNAL(dataChanged(QModelIndex,QModelIndex,QVector<int>)),
SLOT(dataChanged(QModelIndex,QModelIndex,QVector<int>)));
_treeView->viewport()->installEventFilter(this);
}
bool ToolTipUpdater::eventFilter(QObject* /*obj*/, QEvent* ev)
{
if (ev->type() == QEvent::ToolTip)
{
QHelpEvent *helpEvent = static_cast<QHelpEvent *>(ev);
_toolTipPos = helpEvent->globalPos();
}
return false;
}
void ToolTipUpdater::dataChanged(const QModelIndex& topLeft,
const QModelIndex& bottomRight,
const QVector<int>& roles)
{
if (!QToolTip::isVisible() || !roles.contains(Qt::ToolTipRole) || _toolTipPos.isNull()) {
return;
}
// Was it the item under the cursor that changed?
auto index = _treeView->indexAt(_treeView->mapFromGlobal(QCursor::pos()));
if (topLeft == bottomRight && index != topLeft) {
return;
}
// Update the currently active tooltip
QToolTip::showText(_toolTipPos, _treeView->model()->data(index, Qt::ToolTipRole).toString());
}