hector_nist_arena_designer: hector_nist_arena_designer: arenasceneelement.cpp Source File

00001 #include "arenasceneelement.h"
00002 
00003 #include "../model/arenaelement.h"
00004 #include "../model/arenaelementtype.h"
00005 
00006 #include "arenascene.h"
00007 
00008 #include <QDebug>
00009 #include <QMimeData>
00010 #include <QDrag>
00011 #include <QPixmap>
00012 #include <QCursor>
00013 #include <QGraphicsSceneMouseEvent>
00014 #include <QPainter>
00015 #include <QStyleOptionGraphicsItem>
00016 
00017 ArenaSceneElement::ArenaSceneElement(ArenaElement *element)
00018     : m_element(element)
00019 {
00020     setPixmap(element->type()->pixmap());
00021     m_isEditorSample = false;
00022     setFlag(QGraphicsItem::ItemIsMovable, true);
00023     setFlag(QGraphicsItem::ItemIsSelectable, true);
00024 
00025     connect(element, SIGNAL(posChanged(ArenaElement*, QPoint)),
00026                      SLOT(slotPosChanged(ArenaElement*, QPoint)));
00027     connect(element, SIGNAL(rotationChanged(ArenaElement*, int)),
00028                      SLOT(slotRotationChanged(ArenaElement*, int)));
00029 
00030     //setTransformOriginPoint(pixmap().width() / 2.0, pixmap().width() / 2.0);
00031 
00032 #if 0
00033     switch (element->type()->type())
00034     {
00035     case ArenaElementType::WallType:
00036         //setTransformOriginPoint(-42.5, 12.5);
00037         break;
00038     case ArenaElementType::FloorType:
00039     case ArenaElementType::MountableItemType:
00040     case ArenaElementType::ItemType:
00041         setTransformOriginPoint(pixmap().width() / 2.0, pixmap().width() / 2.0);
00042         break;
00043     }
00044 #endif
00045 
00046     slotPosChanged(element, element->pos());
00047     slotRotationChanged(element, element->rotation());
00048 }
00049 
00050 void ArenaSceneElement::setIsEditorSample(bool isEditorSample)
00051 {
00052     m_isEditorSample = isEditorSample;
00053     setOffset(gridOffset());
00054 }
00055 
00056 QPointF ArenaSceneElement::gridOffset()
00057 {
00058     if (m_isEditorSample)
00059         return QPointF(0, 0);
00060 
00061     // Offset of the pixmap before the rotation is performed!
00062     QPointF offset(-pixmap().width() / 2.0, -pixmap().height() / 2.0);
00063 
00064     switch(m_element->type()->type())
00065     {
00066     case ArenaElementType::WallType:
00067         offset += QPointF(0, -CELL_SIZE / 2);
00068         break;
00069     case ArenaElementType::FloorType:
00070     case ArenaElementType::MountableItemType:
00071     case ArenaElementType::ItemType:
00072         break;
00073     }
00074 
00075     return offset;
00076 }
00077 
00078 void ArenaSceneElement::slotRotationChanged(ArenaElement *element, int rotation)
00079 {
00080     setOffset(gridOffset());
00081     setRotation(rotation);
00082 }
00083 
00084 void ArenaSceneElement::mousePressEvent(QGraphicsSceneMouseEvent *event)
00085 {
00086     if (m_isEditorSample)
00087     {
00088         QMimeData *data = new QMimeData;
00089         data->setData("type", m_element->type()->name().toAscii());
00090         data->setData("rotation", QString::number(m_element->rotation()).toAscii());
00091         QDrag *drag = new QDrag(event->widget());
00092         drag->setMimeData(data);
00093         drag->start();
00094 
00095         setCursor(Qt::OpenHandCursor);
00096     }
00097 
00098     // Z value 1 is used to put the item being moved on top
00099     setZValue(1);
00100     event->accept();
00101     QGraphicsPixmapItem::mousePressEvent(event);
00102 }
00103 
00104 void ArenaSceneElement::slotPosChanged(ArenaElement *element, QPoint pos)
00105 {
00106     Q_ASSERT(element == m_element);
00107 
00108     QPointF newPos = ArenaScene::gridToScene(pos + element->itemOffset());
00109     setPos(newPos);
00110 }