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/***************************************************************************
* Copyright (C) 2011 by Peter Penz <[email protected]> *
* *
* Based on the Itemviews NG project from Trolltech Labs: *
* http://qt.gitorious.org/qt-labs/itemviews-ng *
* *
* 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 KITEMLISTCONTAINER_H
#define KITEMLISTCONTAINER_H
#include "dolphin_export.h"
#include <QAbstractScrollArea>
class KItemListController;
class KItemListSmoothScroller;
class KItemListView;
class KItemModelBase;
/**
* @brief Provides a QWidget based scrolling view for a KItemListController.
*
* The model and view are maintained by the KItemListController.
*
* @see KItemListController
*/
class DOLPHIN_EXPORT KItemListContainer : public QAbstractScrollArea
{
Q_OBJECT
public:
/**
* @param controller Controller that maintains the model and the view.
* The KItemListContainer takes ownership of the controller
* (the parent will be set to the KItemListContainer).
* @param parent Optional parent widget.
*/
explicit KItemListContainer(KItemListController* controller, QWidget* parent = nullptr);
~KItemListContainer() override;
KItemListController* controller() const;
void setEnabledFrame(bool enable);
bool enabledFrame() const;
protected:
void keyPressEvent(QKeyEvent* event) override;
void showEvent(QShowEvent* event) override;
void resizeEvent(QResizeEvent* event) override;
void scrollContentsBy(int dx, int dy) override;
void wheelEvent(QWheelEvent* event) override;
private slots:
void slotScrollOrientationChanged(Qt::Orientation current, Qt::Orientation previous);
void slotModelChanged(KItemModelBase* current, KItemModelBase* previous);
void slotViewChanged(KItemListView* current, KItemListView* previous);
void scrollTo(qreal offset);
void updateScrollOffsetScrollBar();
void updateItemOffsetScrollBar();
private:
void updateGeometries();
void updateSmoothScrollers(Qt::Orientation orientation);
/**
* Helper method for updateScrollOffsetScrollBar(). Updates the scrollbar-policy
* to Qt::ScrollBarAlwaysOn for cases where turning off the scrollbar might lead
* to an endless layout loop (see bug #293318).
*/
void updateScrollOffsetScrollBarPolicy();
private:
KItemListController* m_controller;
KItemListSmoothScroller* m_horizontalSmoothScroller;
KItemListSmoothScroller* m_verticalSmoothScroller;
};
#endif
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