orte/contrib/shape/MyQFrame.cpp

   1 /****************************************************************
   2 **
   3 ** Implementation MyQFrame class
   4 **
   5 ****************************************************************/
   6
   7 #include "MyQFrame.h"
   8 #include <QPolygon>
   9 #include <QMouseEvent>
  10 #include <QPaintEvent>
  11 #include <QWheelEvent>
  12 #include <QKeyEvent>
  13
  14 MyQFrame::MyQFrame( QWidget *parent)
  15         : QFrame( parent)
  16 {
  17     mousePressed=0;
  18     objects[0]=objects[1]=objects[2]=objects[3]=objects[4]=0;
  19     rotations[0]=rotations[1]=rotations[2]=rotations[3]=rotations[4]=0;
  20     zooms[0]=zooms[1]=zooms[2]=zooms[3]=zooms[4]=1;
  21     rotation_mode=0;
  22     wheel_delta=0;
  23     scale_factor=1;
  24
  25     setFocusPolicy(Qt::StrongFocus);
  26
  27     connect(this,SIGNAL(changed()),this,SLOT(update()));
  28 }
  29
  30
  31 void MyQFrame::activateObject(int object,int color, int shape) {
  32     if (object>4) return;
  33     objects[object]=1;
  34     switch(color) {
  35         case 0:colors[object]=QColor(0,0,255);break;
  36         case 1:colors[object]=QColor(0,255,0);break;
  37         case 2:colors[object]=QColor(255,0,0);break;
  38         case 3:colors[object]=QColor(0,0,0);break;
  39         case 4:colors[object]=QColor(255,255,0);break;
  40     }
  41     shapes[object]=shape;
  42 }
  43
  44 void MyQFrame::deactivateObject(int object) {
  45     if (object>4) return;
  46     objects[object]=0;
  47     emit changed();
  48 }
  49
  50 void MyQFrame::setPosition(int object,QRect position) {
  51     positions[object]=position;
  52     emit changed();
  53 }
  54
  55 void MyQFrame::setZoom(int object,double zoom) {
  56     zooms[object]=zoom;
  57     emit changed();
  58 }
  59
  60 void MyQFrame::setRotation(int object,int rotation) {
  61     rotations[object]=rotation;
  62     emit changed();
  63 }
  64
  65 void MyQFrame::paintEvent(QPaintEvent*)
  66 {
  67     QPainter p(this);
  68
  69     for(int i=0;i<5;i++) {
  70         if (!objects[i]) continue;
  71         p.setBrush(colors[i]);
  72         p.setPen(Qt::NoPen);
  73
  74         p.save();
  75         p.translate(positions[i].center().x(),positions[i].center().y());
  76         p.rotate(rotations[i]);
  77         p.scale(zooms[i],zooms[i]);
  78
  79         switch(shapes[i]){
  80             case 0://rectangle
  81                 p.drawRect(positions[i].topLeft().x()-positions[i].center().x(),
  82                            positions[i].topLeft().y()-positions[i].center().y(),
  83                            positions[i].width(), positions[i].height());
  84                 break;
  85             case 1: //ellipse
  86                 p.drawEllipse(positions[i].topLeft().x()-positions[i].center().x(),
  87                               positions[i].topLeft().y()-positions[i].center().y(),
  88                               positions[i].width(), positions[i].height());
  89                 break;
  90             case 2: //triangle
  91                 QPolygon pt;
  92                 pt.putPoints(0,3, 0, positions[i].top()-positions[i].center().y(),
  93                                   positions[i].right()-positions[i].center().x(),positions[i].bottom()-positions[i].center().y(),
  94                                   positions[i].left()-positions[i].center().x(),positions[i].bottom()-positions[i].center().y());
  95                 p.drawPolygon(pt);
  96                 break;
  97         }
  98         p.restore();
  99
 100         QString strPos;
 101         strPos="X:" + QString::number(positions[i].center().x())+" " +
 102                "Y:"+QString::number(positions[i].center().y());
 103         p.drawText(positions[i].left()-(70-positions[i].width())/2,positions[i].top()-1,strPos);
 104     }
 105
 106 }
 107
 108 void MyQFrame::mouseMoveEvent(QMouseEvent *e)
 109 {
 110     if(mousePressed==0) return;
 111     mouseX=e->pos().x();
 112     mouseY=e->pos().y();
 113 }
 114
 115 void MyQFrame::mousePressEvent (QMouseEvent *e)
 116 {
 117     mousePressed=1;
 118     mouseX=e->pos().x();
 119     mouseY=e->pos().y();
 120 }
 121
 122 void MyQFrame::mouseReleaseEvent (QMouseEvent *)
 123 {
 124     mousePressed=0;
 125 }
 126
 127 void MyQFrame::wheelEvent (QWheelEvent *e)
 128 {
 129     if(!rotation_mode)
 130       wheel_delta += e->delta()/120;
 131     else
 132       scale_factor += (double)e->delta()/1200;
 133     e->accept();
 134 }
 135
 136 void MyQFrame::keyPressEvent (QKeyEvent *e)
 137 {
 138     if (e->key() == Qt::Key_Control)
 139       rotation_mode=1;
 140     else
 141       QFrame::keyPressEvent(e);
 142 }
 143
 144 void MyQFrame::keyReleaseEvent (QKeyEvent *e)
 145 {
 146     if (e->key() == Qt::Key_Control)
 147       rotation_mode=0;
 148     else
 149       QFrame::keyPressEvent(e);
 150 }