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/** This file is part of WebScraps **
*
* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).*
* All rights reserved.
* Contact: Nokia Corporation (qt-info@nokia.com)**
* You may use this file under the terms of the BSD license as follows:
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice, this list
* of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice, this
* list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
* 3. Neither the name of Nokia Corporation and its Subsidiary(-ies) nor the names of
* its contributors may be used to endorse or promote products derived from this software
* without specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
* WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef RESIZEUIHELPER_H
#define RESIZEUIHELPER_H
#include <QObject>
#include <QWidget>
#include <QGraphicsItem>
#include <QEvent>
class ResizeUiHelper : public QObject, public QGraphicsItem
{
Q_OBJECT
public:
enum GripId {
NoGrip = -1,
TopLeft = 0,
Top,
TopRight,
Right,
BottomRight,
Bottom,
BottomLeft,
Left
};
ResizeUiHelper(QGraphicsItem *item, QObject *parent = 0);
ResizeUiHelper(QWidget *widget, QObject *parent = 0);
QRectF rect() const;
void setResizeGripEnabled(GripId grip, bool enabled);
bool resizeGripEnabled(GripId grip) const;
void setAllResizeGripsEnabled(bool enabled);
void setGripSize(QSizeF sz);
QSizeF gripSize() const;
virtual QRectF gripRect(GripId grip) const;
virtual QCursor gripCursor(GripId grip) const;
bool sceneEventFilter(QGraphicsItem* watched, QEvent* event);
bool eventFilter(QObject *watched, QEvent * event);
bool genericEventFilter(QEvent::Type eventType, QPointF eventPos);
QRectF rectResize(QRectF originalRect, GripId activeGrip, QPointF originalPoint, QPointF newPoint);
QRectF boundingRect() const; // dummy
void paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget); // dummy
void reset();
bool resizeEnabled() const;
public slots:
void setResizeEnabled(bool enabled);
void setRect(const QRectF &rect);
signals:
void rectResized(const QRectF &rect);
private:
void setWatchedCursor(QCursor cursor);
QGraphicsItem *m_item;
QWidget *m_widget;
bool m_isResizeEnabled;
QVector<bool> m_gripsEnabled;
QRectF m_rect;
QSizeF m_gripSize;
QPointF m_buttonDownPos;
QRectF m_buttonDownRect;
GripId m_activeResizeGrip;
bool m_isResizeInProgress;
};
#endif // RESIZEUIHELPER_H
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