mirror of
https://invent.kde.org/system/dolphin
synced 2024-09-20 00:41:23 +00:00
90 lines
3.2 KiB
C++
90 lines
3.2 KiB
C++
/***************************************************************************
|
|
* Copyright (C) 2008 by Simon St James <kdedevel@etotheipiplusone.com> *
|
|
* *
|
|
* 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 FOLDEREXPANDER_H
|
|
#define FOLDEREXPANDER_H
|
|
|
|
// Needs to be exported as FoldersPanel uses it.
|
|
#include "libdolphin_export.h"
|
|
|
|
#include <QObject>
|
|
#include <QPoint>
|
|
|
|
class QAbstractItemView;
|
|
class QTreeView;
|
|
class QTimer;
|
|
class QSortFilterProxyModel;
|
|
class QModelIndex;
|
|
|
|
/**
|
|
* Grants auto expanding functionality to the provided item view.
|
|
* Qt has its own auto expand mechanism, but this works only
|
|
* for QTreeView. Auto expanding of folders is turned on
|
|
* per default.
|
|
*
|
|
* If the provided view is an instance of the class QTreeView, the
|
|
* expansion of the directory is automatically done on hover. Otherwise
|
|
* the enterDir() signal is emitted and the caller needs to ensure that
|
|
* the requested directory is entered.
|
|
*
|
|
* The FolderExpander becomes a child of the provided view.
|
|
*/
|
|
class LIBDOLPHINPRIVATE_EXPORT FolderExpander : public QObject
|
|
{
|
|
Q_OBJECT
|
|
|
|
public:
|
|
FolderExpander(QAbstractItemView* view, QSortFilterProxyModel* proxyModel);
|
|
virtual ~FolderExpander();
|
|
|
|
void setEnabled(bool enabled);
|
|
bool enabled() const;
|
|
|
|
signals:
|
|
/**
|
|
* Is emitted if the directory \a dirModelIndex should be entered. The
|
|
* signal is not emitted when a QTreeView is used, as the entering of
|
|
* the directory is already provided by expanding the tree node.
|
|
*/
|
|
void enterDir(const QModelIndex& dirModelIndex);
|
|
|
|
|
|
private slots:
|
|
void viewScrolled();
|
|
void autoExpandTimeout();
|
|
|
|
private:
|
|
bool m_enabled;
|
|
|
|
QAbstractItemView* m_view;
|
|
QSortFilterProxyModel* m_proxyModel;
|
|
|
|
QTimer* m_autoExpandTriggerTimer;
|
|
QPoint m_autoExpandPos;
|
|
|
|
static const int AUTO_EXPAND_DELAY = 700;
|
|
|
|
/**
|
|
* Watchs the drag/move events for the view to decide
|
|
* whether auto expanding of a folder should be triggered.
|
|
*/
|
|
bool eventFilter(QObject* watched, QEvent* event);
|
|
};
|
|
#endif
|