9a85de5760
git-svn-id: http://find-object.googlecode.com/svn/trunk/find_object@55 620bd6b2-0a58-f614-fd9a-1bd335dccda9
112 lines
2.6 KiB
C++
112 lines
2.6 KiB
C++
/*
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* Copyright (C) 2011, Mathieu Labbe - IntRoLab - Universite de Sherbrooke
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*/
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#include "KeypointItem.h"
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#include <QtGui/QPen>
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#include <QtGui/QBrush>
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#include <QtGui/QGraphicsScene>
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KeypointItem::KeypointItem(int id, qreal x, qreal y, int r, const QString & info, const QColor & color, QGraphicsItem * parent) :
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QGraphicsEllipseItem(x, y, r, r, parent),
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_info(info),
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_placeHolder(0),
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_id(id)
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{
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this->setPen(QPen(color));
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this->setBrush(QBrush(color));
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this->setAcceptsHoverEvents(true);
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this->setFlag(QGraphicsItem::ItemIsFocusable, true);
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this->setFlag(QGraphicsItem::ItemIsSelectable, true);
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_width = pen().width();
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}
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KeypointItem::~KeypointItem()
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{
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/*if(_placeHolder)
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{
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delete _placeHolder;
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}*/
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}
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void KeypointItem::setColor(const QColor & color)
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{
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this->setPen(QPen(color));
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this->setBrush(QBrush(color));
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if(_placeHolder)
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{
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QList<QGraphicsItem *> items = _placeHolder->children();
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if(items.size())
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{
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((QGraphicsTextItem *)items.front())->setDefaultTextColor(this->pen().color().rgb());
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}
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}
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}
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void KeypointItem::showDescription()
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{
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if(!_placeHolder)
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{
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_placeHolder = new QGraphicsRectItem();
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_placeHolder->setVisible(false);
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this->scene()->addItem(_placeHolder);
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_placeHolder->setBrush(QBrush(QColor ( 0, 0, 0, 170 ))); // Black transparent background
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QGraphicsTextItem * text = new QGraphicsTextItem(_placeHolder);
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text->setDefaultTextColor(this->pen().color().rgb());
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text->setPlainText(_info);
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_placeHolder->setRect(text->boundingRect());
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}
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QPen pen = this->pen();
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this->setPen(QPen(pen.color(), _width+2));
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_placeHolder->setZValue(this->zValue()+1);
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_placeHolder->setPos(this->mapToScene(0,0));
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_placeHolder->setVisible(true);
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}
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void KeypointItem::hideDescription()
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{
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if(_placeHolder)
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{
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_placeHolder->setVisible(false);
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}
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this->setPen(QPen(pen().color(), _width));
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}
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void KeypointItem::hoverEnterEvent ( QGraphicsSceneHoverEvent * event )
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{
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QGraphicsScene * scene = this->scene();
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if(scene && scene->focusItem() == 0)
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{
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this->showDescription();
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}
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else
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{
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this->setPen(QPen(pen().color(), _width+2));
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}
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QGraphicsEllipseItem::hoverEnterEvent(event);
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}
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void KeypointItem::hoverLeaveEvent ( QGraphicsSceneHoverEvent * event )
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{
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if(!this->hasFocus())
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{
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this->hideDescription();
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}
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QGraphicsEllipseItem::hoverEnterEvent(event);
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}
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void KeypointItem::focusInEvent ( QFocusEvent * event )
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{
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this->showDescription();
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QGraphicsEllipseItem::focusInEvent(event);
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}
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void KeypointItem::focusOutEvent ( QFocusEvent * event )
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{
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this->hideDescription();
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QGraphicsEllipseItem::focusOutEvent(event);
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}
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