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0001 /* 0002 * Copyright (C) 2008 by Konstantin Heil <konst.heil@stud.uni-heidelberg.de> 0003 * Copyright (C) 2011 Geoffry Song <goffrie@gmail.com> 0004 * 0005 * This library is free software; you can redistribute it and/or 0006 * modify it under the terms of the GNU Lesser General Public 0007 * License as published by the Free Software Foundation; either 0008 * version 2.1 of the License, or (at your option) any later version. 0009 * 0010 * This library is distributed in the hope that it will be useful, 0011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 0012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 0013 * Lesser General Public License for more details. 0014 * 0015 * You should have received a copy of the GNU Lesser General Public 0016 * License along with this library; if not, write to the Free Software 0017 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 0018 */ 0019 0020 #ifndef TOOLTIPMANAGER_H 0021 #define TOOLTIPMANAGER_H 0022 0023 #include <QtCore/QObject> 0024 0025 #include <QtCore/QModelIndex> 0026 0027 class QLayout; 0028 class MenuItem; 0029 class KToolTipItem; 0030 class QAbstractItemView; 0031 0032 /** 0033 * @brief Manages the tooltips for an item view. 0034 * 0035 * When hovering an item, a tooltip is shown after 0036 * a short timeout. The tooltip is hidden again when the 0037 * viewport is hovered or the item view has been left. 0038 */ 0039 class ToolTipManager : public QObject 0040 { 0041 Q_OBJECT 0042 0043 public: 0044 /** 0045 * Standard constructor. The ToolTipManager will start handling ToolTip events on the provided 0046 * view immediately. 0047 * 0048 * @param parent The view which will have the tooltips displayed for. 0049 */ 0050 explicit ToolTipManager(QAbstractItemView *parent); 0051 virtual ~ToolTipManager(); 0052 0053 public Q_SLOTS: 0054 /** 0055 * Hides the currently shown tooltip. Invoking this method is 0056 * only needed when the tooltip should be hidden although 0057 * an item is hovered. 0058 */ 0059 void hideToolTip(); 0060 0061 protected: 0062 /** 0063 * Please see the Qt documentation for more details. 0064 * 0065 * @param watched The object that was being watched. 0066 * @param event The event object. 0067 * @returns true if the event was handled in this filter, or false if it was not. 0068 */ 0069 virtual bool eventFilter(QObject *watched, QEvent *event); 0070 0071 private Q_SLOTS: 0072 void prepareToolTip(); 0073 void requestToolTip(const QModelIndex &index); 0074 0075 private: 0076 void showToolTip(const QModelIndex &index); 0077 QWidget * createTipContent(const QModelIndex &index); 0078 0079 class Private; 0080 ToolTipManager::Private *d; 0081 }; 0082 0083 #endif