git.sesse.net Git - kdenlive/blob - src/graphicsscenerectmove.cpp

   1 #include "graphicsscenerectmove.h"
   2 #include <KDebug>
   3 #include <QGraphicsSceneMouseEvent>
   4 #include <QGraphicsRectItem>
   5 #include <QGraphicsView>
   6 #include <QCursor>
   7
   8 QGraphicsItem* selected=NULL;
   9 int button=0;
  10 int resizeMode=-1;
  11 enum resizeMode {NoResize,TopLeft,BottomLeft,TopRight,BottomRight,Left,Right,Up,Down};
  12 GraphicsSceneRectMove::GraphicsSceneRectMove(QObject *parent):QGraphicsScene(parent){
  13         //grabMouse();
  14 }
  15
  16 void GraphicsSceneRectMove::mouseMoveEvent(QGraphicsSceneMouseEvent* e){
  17
  18         if (selected && selected->type()==3 &&button==1){
  19
  20                 QGraphicsRectItem *gi=(QGraphicsRectItem*)selected;
  21                 QRectF newrect=gi->rect();
  22                 QPointF newpoint=e->scenePos();
  23                 newpoint-=selected->scenePos();
  24                 switch (resizeMode){
  25                 case TopLeft:
  26                         newrect.setTopLeft(newpoint);
  27                         break;
  28                 case BottomLeft:
  29                         newrect.setBottomLeft(newpoint);
  30                         break;
  31                 case TopRight:
  32                         newrect.setTopRight(newpoint);
  33                         break;
  34                 case BottomRight:
  35                         newrect.setBottomRight(newpoint);
  36                         break;
  37                 case Left:
  38                         newrect.setLeft(newpoint.x());
  39                         break;
  40                 case Right:
  41                         newrect.setRight(newpoint.x());
  42                         break;
  43                 case Up:
  44                         newrect.setTop(newpoint.y());
  45                         break;
  46                 case Down:
  47                         newrect.setBottom(newpoint.y());
  48                         break;
  49                 }
  50
  51                 gi->setRect(newrect);
  52                 gi->setPos(selected->scenePos());
  53         }
  54
  55         QPointF p=e->scenePos();
  56         p+=QPoint(-2,-2);
  57         resizeMode=NoResize;
  58         selected=NULL;
  59         foreach(QGraphicsItem* g, items( QRectF( p , QSizeF(4,4) ).toRect() ) ){
  60
  61                 if (g->type()==3 ){
  62
  63                         QGraphicsRectItem *gi=(QGraphicsRectItem*)g;
  64                         QRectF r=gi->rect();
  65                         r.translate(gi->scenePos());
  66
  67                         if ( (r.toRect().topLeft()-=e->scenePos().toPoint() ).manhattanLength()<3 ){
  68                                 resizeMode=TopLeft;
  69                         }else if ((r.toRect().bottomLeft()-=e->scenePos().toPoint() ).manhattanLength()<3 ){
  70                                 resizeMode=BottomLeft;
  71                         }else if ((r.toRect().topRight()-=e->scenePos().toPoint() ).manhattanLength()<3 ){
  72                                 resizeMode=TopRight;
  73                         }else if ((r.toRect().bottomRight()-=e->scenePos().toPoint() ).manhattanLength()<3 ){
  74                                 resizeMode=BottomRight;
  75                         }else if ( qAbs(r.toRect().left()-e->scenePos().toPoint().x() ) <3){
  76                                 resizeMode=Left;
  77                         }else if ( qAbs(r.toRect().right()-e->scenePos().toPoint().x() ) <3){
  78                                 resizeMode=Right;
  79                         }else if ( qAbs(r.toRect().top()-e->scenePos().toPoint().y() ) <3){
  80                                 resizeMode=Up;
  81                         }else if ( qAbs(r.toRect().bottom()-e->scenePos().toPoint().y() ) <3){
  82                                 resizeMode=Down;
  83                         }
  84                         if (resizeMode!=NoResize)
  85                                 selected=gi;
  86                 }
  87         }
  88         switch (resizeMode){
  89                 case TopLeft:
  90                 case BottomRight:
  91                         setCursor(QCursor(Qt::SizeFDiagCursor));
  92                         break;
  93                 case BottomLeft:
  94                 case TopRight:
  95                         setCursor(QCursor(Qt::SizeBDiagCursor));
  96                         break;
  97                 case Left:
  98                 case Right:
  99                         setCursor(Qt::SizeHorCursor);
 100                         break;
 101                 case Up:
 102                 case Down:
 103                         setCursor(Qt::SizeVerCursor);
 104                         break;
 105                 default:
 106                         setCursor(QCursor(Qt::ArrowCursor));
 107                         QGraphicsScene::mouseMoveEvent(e);
 108         }
 109
 110
 111 }
 112
 113 void GraphicsSceneRectMove::mousePressEvent(QGraphicsSceneMouseEvent* e){
 114         button=e->button();
 115         if (!selected || selected->type()!=3)
 116                 QGraphicsScene::mousePressEvent(e);
 117 }
 118 void GraphicsSceneRectMove::mouseReleaseEvent(QGraphicsSceneMouseEvent* e){
 119         button=0;
 120         if (!selected || selected->type()!=3)
 121                 QGraphicsScene::mouseReleaseEvent(e);
 122 }
 123
 124 void GraphicsSceneRectMove::setCursor(QCursor c){
 125         QList<QGraphicsView*> l=views();
 126         foreach(QGraphicsView* v, l){
 127                 v->setCursor(c);
 128         }
 129 }