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Plasma

tooltipmanager.h

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00001 /*
00002  * Copyright 2007 by Dan Meltzer <hydrogen@notyetimplemented.com>
00003  * Copyright 2008 by Aaron Seigo <aseigo@kde.org>
00004  * Copyright 2008 by Alexis Ménard <darktears31@gmail.com>
00005  *
00006  * This library is free software; you can redistribute it and/or
00007  * modify it under the terms of the GNU Lesser General Public
00008  * License as published by the Free Software Foundation; either
00009  * version 2.1 of the License, or (at your option) any later version.
00010  *
00011  * This library is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014  * Lesser General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU Lesser General Public
00017  * License along with this library; if not, write to the Free Software
00018  * Foundation, Inc., 51 Franklin St, Fifth Floor,
00019  * Boston, MA  02110-1301  USA
00020  */
00021 
00022 #ifndef PLASMA_TOOLTIP_MANAGER_H
00023 #define PLASMA_TOOLTIP_MANAGER_H
00024 
00025 //plasma
00026 #include <plasma/plasma.h>
00027 #include <plasma/plasma_export.h>
00028 #include <plasma/tooltipcontent.h>
00029 
00030 namespace Plasma
00031 {
00032 
00033 class ToolTipManagerPrivate;
00034 class Applet;
00035 class Corona;
00036 
00068 class PLASMA_EXPORT ToolTipManager  : public QObject
00069 {
00070     Q_OBJECT
00071 public:
00072 
00073     enum State {
00074         Activated = 0 ,
00075         Inhibited ,
00076         Deactivated 
00077     };
00078 
00082     static ToolTipManager *self();
00083 
00089     void show(QGraphicsWidget *widget);
00090 
00098     bool isVisible(QGraphicsWidget *widget) const;
00099 
00105     void hide(QGraphicsWidget *widget);
00106 
00125     void registerWidget(QGraphicsWidget *widget);
00126 
00134     void unregisterWidget(QGraphicsWidget *widget);
00135 
00146     void setContent(QGraphicsWidget *widget,
00147                     const ToolTipContent &data);
00148 
00153     void clearContent(QGraphicsWidget *widget);
00154 
00160     void setState(ToolTipManager::State state);
00161 
00165     ToolTipManager::State state() const;
00166 
00167 private:
00173     explicit ToolTipManager(QObject *parent = 0);
00174 
00178     ~ToolTipManager();
00179 
00180     friend class ToolTipManagerSingleton;
00181     friend class Corona; // The corona needs to register itself
00182     friend class ToolTipManagerPrivate;
00183     bool eventFilter(QObject *watched, QEvent *event);
00184 
00185     ToolTipManagerPrivate *const d;
00186     Corona* m_corona;
00187 
00188     Q_PRIVATE_SLOT(d, void showToolTip())
00189     Q_PRIVATE_SLOT(d, void resetShownState())
00190     Q_PRIVATE_SLOT(d, void onWidgetDestroyed(QObject*))
00191 };
00192 
00193 } // namespace Plasma
00194 
00195 #endif // PLASMA_TOOL_TIP_MANAGER_H

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