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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 *
*******************************************************************************/
#ifndef TOOLTIPMANAGER_H
#define TOOLTIPMANAGER_H
#include <QObject>
#include <QRect>
#include <kfileitem.h>
class DolphinModel;
class DolphinSortFilterProxyModel;
class FileMetaDataToolTip;
class QAbstractItemView;
class QModelIndex;
class QTimer;
/**
* @brief Manages the tooltips for an item view.
*
* When hovering an item, a tooltip is shown after
* a short timeout. The tooltip is hidden again when the
* viewport is hovered or the item view has been left.
*/
class ToolTipManager : public QObject
{
Q_OBJECT
public:
explicit ToolTipManager(QAbstractItemView* parent,
DolphinSortFilterProxyModel* model);
virtual ~ToolTipManager();
public slots:
/**
* Hides the currently shown tooltip. Invoking this method is
* only needed when the tooltip should be hidden although
* an item is hovered.
*/
void hideTip();
protected:
virtual bool eventFilter(QObject* watched, QEvent* event);
private slots:
void requestToolTip(const QModelIndex& index);
void hideToolTip();
void prepareToolTip();
void startPreviewJob();
void setPreviewPix(const KFileItem& item, const QPixmap& pix);
void previewFailed();
void showToolTip();
private:
void showToolTipDelayed(const QPixmap& pixmap);
private:
QAbstractItemView* m_view;
DolphinModel* m_dolphinModel;
DolphinSortFilterProxyModel* m_proxyModel;
/// Timeout from requesting a tooltip until the tooltip is shown
QTimer* m_prepareToolTipTimer;
/// Timeout from requesting a tooltip until starting a job to
/// create a preview pixmap. The preview job is started before
/// m_prepareToolTipTimer has been exceeded, to have the preview
/// pixmap ideally before the tooltip will be shown.
QTimer* m_startPreviewJobTimer;
/// Don't show the tooltip, before the preview has been received. The
/// time indicates the interval, when the check for a received
/// is done.
QTimer* m_waitOnPreviewTimer;
/// The tooltip is shown slightly delayed to prevent a flickering
/// because of layouting the content.
QTimer* m_showToolTipDelayedTimer;
FileMetaDataToolTip* m_fileMetaDataToolTip;
KFileItem m_item;
QRect m_itemRect;
bool m_generatingPreview;
bool m_hasDefaultIcon;
QPixmap m_previewPixmap;
};
#endif
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