initial import
This commit is contained in:
Mo Elzubeir
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/************************************************************************
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* $Id: droppeditem.cpp 661 2011-04-05 13:16:53Z elzubeir $
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*
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* ------------
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* Description:
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* ------------
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*
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* (C) Copyright 2009-2011 ALLCONTENT. All rights reserved.
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*
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* -----------------
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* Revision Details: (Updated by Revision Control System)
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* -----------------
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* $Date: 2011-04-05 17:16:53 +0400 (Tue, 05 Apr 2011) $
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* $Author: elzubeir $
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* $Revision: 661 $
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* $HeadURL: file:///opt/svn/socialhose/trunk/app/ClippingStation/droppeditem.cpp $
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*
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************************************************************************/
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#include "droppeditem.h"
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#include "pageitem.h"
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#include <QKeyEvent>
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#include <QtDebug>
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#include <QTime>
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#include <QGraphicsScene>
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#include <QMessageBox>
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#include <QPainter>
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DroppedItem::DroppedItem(const QPixmap & pixmap, const QPointF & scenePos, qreal perc, QGraphicsItem * parent /*=0*/) :
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QGraphicsPixmapItem(pixmap, parent),
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m_originalPixmap(pixmap),
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m_imageWidth(m_originalPixmap.width())
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{
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// set position with scene position.
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setPos(scenePos);
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setZValue(0.9);
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// make the item selectable, movable & focusable
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setFlag(QGraphicsItem::ItemIsSelectable, true);
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setFlag(QGraphicsItem::ItemIsMovable, true);
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setFlag(QGraphicsItem::ItemIsFocusable,true);
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m_pageItem = static_cast<PageItem*> (parentItem());
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//setPixmap(m_originalPixmap);
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m_zoomDlg = new DroppedItemZoomDialog(this, 0);
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m_zoomDlg->setValue(static_cast<int>(perc*100));
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setPixmap(m_originalPixmap);
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//qreal w = m_currentValue/100.0;
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//setTransformationMode(Qt::SmoothTransformation);
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//setTransform(QTransform().scale(w, w));
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m_originalImage = m_originalPixmap.toImage();
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}
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DroppedItem::~DroppedItem()
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{
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qDebug("~DroppedItem()");
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//if (m_pageItem)
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//{
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// delete m_pageItem;
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// m_pageItem = 0;
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//}
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if(m_zoomDlg)
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{
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delete m_zoomDlg;
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m_zoomDlg = 0;
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}
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}
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int DroppedItem::type() const
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{
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return Type;
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}
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void DroppedItem::keyPressEvent(QKeyEvent * event)
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{
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if (event->key() == Qt::Key_Delete && isSelected())
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{
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// remove item when key press event is Suppr.
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scene()->removeItem(this);
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return;
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}
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else if(event->modifiers() == Qt::ControlModifier && event->key() == Qt::Key_Minus )
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{
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m_currentValue -= 5;
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zoom(m_currentValue);
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}
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else if(event->modifiers() == Qt::AltModifier && event->key() == Qt::Key_Minus )
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{
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m_currentValue -= 1;
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zoom(m_currentValue);
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}
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else if(event->modifiers() == Qt::ControlModifier && event->key() == Qt::Key_Equal )
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{
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m_currentValue += 5;
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zoom(m_currentValue);
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}
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else if(event->modifiers() == Qt::AltModifier && event->key() == Qt::Key_Equal )
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{
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m_currentValue += 1;
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zoom(m_currentValue);
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}
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else if(event->modifiers() == Qt::ControlModifier && event->key() == Qt::Key_0 )
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{
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zoom(100); //restore to 100%
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}
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else if(event->key() == Qt::Key_Left)
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{
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qreal x = this->pos().x();
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this->setPos(x-5, pos().y());
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//return;
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}
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else if(event->key() == Qt::Key_Right)
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{
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qreal x = this->pos().x();
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this->setPos(x+5, pos().y());
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//return;
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}
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else if(event->key() == Qt::Key_Up)
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{
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qreal y = this->pos().y();
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this->setPos(pos().x(), y-5);
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//return;
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}
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else if(event->key() == Qt::Key_Down)
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{
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qreal y = this->pos().y();
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this->setPos(pos().x(), y+5);
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//return;
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}
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else
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{
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//check if the new position is within the boundary of the page
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QGraphicsPixmapItem::keyPressEvent(event);
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}
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checkBoundary( pos().x(), pos().y() );
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}
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void DroppedItem::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event)
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{
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m_zoomDlg->setValue(m_currentValue);
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m_zoomDlg->exec();
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}
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void DroppedItem::zoom(int value)
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{
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m_currentValue = value;
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//update(this->boundingRect().toRect());
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prepareGeometryChange();
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}
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void DroppedItem::mousePressEvent(QGraphicsSceneMouseEvent *event)
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{
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if (event->button() != Qt::LeftButton)
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{
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event->ignore();
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return;
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}
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checkBoundary(event->pos().toPoint(), true);
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if(m_tweakingpart != "")
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m_tweaking = true;
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QGraphicsPixmapItem::mousePressEvent(event);
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}
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void DroppedItem::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
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{
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if(m_tweaking)
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{
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QPoint pt = event->pos().toPoint();
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m_rectangle = this->boundingRect().toRect();
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qreal value = 1.0;
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/*
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if ( m_tweakingpart == "topLeft" ) m_rectangle . setTopLeft ( pt ) ;
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else if ( m_tweakingpart == "topRight" ) m_rectangle . setTopRight ( pt ) ;
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else if ( m_tweakingpart == "bottomLeft" ) m_rectangle . setBottomLeft ( pt ) ;
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else if ( m_tweakingpart == "bottomRight" ) m_rectangle . setBottomRight ( pt ) ;
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else if ( m_tweakingpart == "top" ) m_rectangle . setTop ( pt . y () ) ;
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else
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*/
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/*else if ( m_tweakingpart == "left" ) m_rectangle . setLeft ( pt . x () ) ;*/
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if ( m_tweakingpart == "bottomRight" ) { m_rectangle . setBottomRight ( pt ) ; value = static_cast<qreal> (m_rectangle.height() / (m_originalPixmap.height()*1.0) );}
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else if ( m_tweakingpart == "bottom" ) { m_rectangle . setBottom ( pt . y () ) ; value = static_cast<qreal> (m_rectangle.height() / (m_originalPixmap.height()*1.0) );}
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else if ( m_tweakingpart == "right" ) { m_rectangle . setRight ( pt . x () ) ; value = static_cast<qreal> (m_rectangle.width() / (m_originalPixmap.width() *1.0) );}
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zoom(value*100);
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}
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else
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{
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QGraphicsPixmapItem::mouseMoveEvent(event);
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}
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}
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void DroppedItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
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{
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m_tweaking = false ;
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m_tweakingpart = "" ;
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setCursor(QCursor(Qt::OpenHandCursor));
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//QPointF pt = mapToScene(pos().x(), pos().y());
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//pt = mapToItem(m_pageItem, pt);
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QPointF pt = pos();
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//pt.setX(pt.x() * m_currentValue/100.0);
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//pt.setX(pt.y() * m_currentValue/100.0);
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checkBoundary(pt.x(), pt.y());
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QGraphicsPixmapItem::mouseReleaseEvent(event);
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//setPixmap(m_originalPixmap);
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}
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void DroppedItem::checkBoundary(qreal x, qreal y)
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{
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//*
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qreal w, h;
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QPolygonF rec = mapToItem(m_pageItem, boundingRect());
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w = rec.boundingRect().width();
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h = rec.boundingRect().height();
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if ( y < m_pageItem->margin().top())
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y = m_pageItem->margin().top();
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if ( x < m_pageItem->margin().left() )
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x = m_pageItem->margin().left();
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if ( x+w > (m_pageItem->width() - m_pageItem->margin().right()) )
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x = m_pageItem->width() - m_pageItem->margin().right() - w;
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if ( y+h > (m_pageItem->height() - m_pageItem->margin().bottom()) )
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y = m_pageItem->height() - m_pageItem->margin().bottom() - h;
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setPos(x, y);
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}
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void DroppedItem::checkBoundary(QPoint pt, bool t)
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{
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m_rectangle = this->boundingRect().toRect();
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if ( m_rectangle.isValid() )
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{
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QPoint m_tl = m_rectangle.topLeft();
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QPoint m_tr = m_rectangle.topRight();
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QPoint m_bl = m_rectangle.bottomLeft();
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QPoint m_br = m_rectangle.bottomRight();
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const QPoint off(20, 20), offx(20, -20), offy(-20, 20);
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if( QRect( m_br-off, m_br+off).contains(pt) )
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{
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if (t)
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m_tweakingpart = "bottomRight" ;
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this->setCursor( Qt::SizeFDiagCursor );
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}
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else if( QRect( m_bl+offx, m_br-offx ).contains(pt) )
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{
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if (t)
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m_tweakingpart = "bottom";
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this->setCursor( Qt::SizeVerCursor ) ;
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}
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else if( QRect( m_tr+offy, m_br-offy ).contains(pt) )
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{
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if (t)
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m_tweakingpart = "right";
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this->setCursor( Qt::SizeHorCursor );
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}
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}
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}
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void DroppedItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
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{
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painter->drawImage(boundingRect().toRect(),getScaledImage());
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}
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QRectF DroppedItem::boundingRect() const
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{
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qreal w = (m_currentValue/100.0) * m_originalPixmap.width();
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qreal h = (m_currentValue/100.0) * m_originalPixmap.height();
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return QRectF(QPointF(0,0), QPointF(w, h));
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}
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QImage DroppedItem::getScaledImage()
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{
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//QImage originalImage = m_originalPixmap.toImage();
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qreal w = (m_currentValue/100.0) * m_originalPixmap.width();
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qreal h = (m_currentValue/100.0) * m_originalPixmap.height();
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QSizeF size(w, h);
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QImage image(size.toSize(), QImage::Format_RGB888);
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image = m_originalImage.scaledToWidth(w, Qt::SmoothTransformation);
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return image;
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}
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