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

   1
   2 #include <KDebug>
   3 #include <QGraphicsSceneMouseEvent>
   4 #include <QGraphicsRectItem>
   5 #include <QGraphicsView>
   6 #include <QCursor>
   7 #include <QList>
   8
   9 #include "graphicsscenerectmove.h"
  10
  11 GraphicsSceneRectMove::GraphicsSceneRectMove(QObject *parent): QGraphicsScene(parent), m_selectedItem(NULL), resizeMode(NoResize) {
  12     //grabMouse();
  13     zoom = 1.0;
  14 }
  15
  16 //virtual
  17 void GraphicsSceneRectMove::mouseDoubleClickEvent(QGraphicsSceneMouseEvent* e) {
  18     QPointF p = e->scenePos();
  19     p += QPoint(-2, -2);
  20     resizeMode = NoResize;
  21     m_selectedItem = NULL;
  22     QGraphicsItem* g = items(QRectF(p , QSizeF(4, 4)).toRect()).at(0);
  23     if (g) {
  24         if (g->type() == 8) {
  25             QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(g);
  26             t->setTextInteractionFlags(Qt::TextEditorInteraction);
  27         }
  28     }
  29     QGraphicsScene::mouseDoubleClickEvent(e);
  30 }
  31
  32 void GraphicsSceneRectMove::mousePressEvent(QGraphicsSceneMouseEvent* e) {
  33     QPointF p = e->scenePos();
  34     p += QPoint(-2, -2);
  35     resizeMode = NoResize;
  36     QList <QGraphicsItem *> list = items(QRectF(p , QSizeF(4, 4)).toRect());
  37     QGraphicsItem *item = NULL;
  38     bool hasSelected = false;
  39     foreach(QGraphicsItem* g, list) {
  40         // check is there is a selected item in list
  41         if (g->zValue() > -1000 && g->isSelected()) {
  42             hasSelected = true;
  43             item = g;
  44             break;
  45         }
  46     }
  47     if (item == NULL) {
  48         if (m_selectedItem && m_selectedItem->type() == 8) {
  49             // disable text editing
  50             QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(m_selectedItem);
  51             t->setTextInteractionFlags(Qt::NoTextInteraction);
  52         }
  53         m_selectedItem = NULL;
  54         foreach(QGraphicsItem* g, list) {
  55             if (g->zValue() > -1000) {
  56                 item = g;
  57                 break;
  58             }
  59         }
  60     }
  61     if (item != NULL) {
  62         m_clickPoint = e->scenePos();
  63         m_selectedItem = item;
  64         if (item->type() == 8) {
  65             QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(item);
  66             if (t->textInteractionFlags() == Qt::TextEditorInteraction) {
  67                 QGraphicsScene::mousePressEvent(e);
  68                 return;
  69             }
  70             t->setTextInteractionFlags(Qt::NoTextInteraction);
  71         } else if (item->type() == 3) {
  72             QGraphicsRectItem *gi = (QGraphicsRectItem*)item;
  73             QRectF r = gi->rect();
  74             r.translate(gi->scenePos());
  75             if ((r.toRect().topLeft() - e->scenePos().toPoint()).manhattanLength() < 6 / zoom) {
  76                 resizeMode = TopLeft;
  77             } else if ((r.toRect().bottomLeft() - e->scenePos().toPoint()).manhattanLength() < 6 / zoom) {
  78                 resizeMode = BottomLeft;
  79             } else if ((r.toRect().topRight() - e->scenePos().toPoint()).manhattanLength() < 6 / zoom) {
  80                 resizeMode = TopRight;
  81             } else if ((r.toRect().bottomRight() - e->scenePos().toPoint()).manhattanLength() < 6 / zoom) {
  82                 resizeMode = BottomRight;
  83             } else if (qAbs(r.toRect().left() - e->scenePos().toPoint().x()) < 3 / zoom) {
  84                 resizeMode = Left;
  85             } else if (qAbs(r.toRect().right() - e->scenePos().toPoint().x()) < 3 / zoom) {
  86                 resizeMode = Right;
  87             } else if (qAbs(r.toRect().top() - e->scenePos().toPoint().y()) < 3 / zoom) {
  88                 resizeMode = Up;
  89             } else if (qAbs(r.toRect().bottom() - e->scenePos().toPoint().y()) < 3 / zoom) {
  90                 resizeMode = Down;
  91             }
  92         }
  93     }
  94     if (!hasSelected) QGraphicsScene::mousePressEvent(e);
  95
  96     kDebug() << "//////  MOUSE CLICK, RESIZE MODE: " << resizeMode;
  97
  98 }
  99
 100 //virtual
 101 void GraphicsSceneRectMove::mouseReleaseEvent(QGraphicsSceneMouseEvent* e) {
 102     //m_selectedItem = NULL;
 103 }
 104
 105
 106 //virtual
 107 void GraphicsSceneRectMove::mouseMoveEvent(QGraphicsSceneMouseEvent* e) {
 108
 109     if (m_selectedItem && e->buttons() & Qt::LeftButton) {
 110         if (m_selectedItem->type() == 3) {
 111             QGraphicsRectItem *gi = (QGraphicsRectItem*)m_selectedItem;
 112             QRectF newrect = gi->rect();
 113             QPointF newpoint = e->scenePos();
 114             //newpoint -= m_selectedItem->scenePos();
 115             switch (resizeMode) {
 116             case TopLeft:
 117                 newrect.setBottomRight(newrect.bottomRight() + gi->pos() - newpoint);
 118                 gi->setPos(newpoint);
 119                 break;
 120             case BottomLeft:
 121                 newrect.setBottomRight(QPointF(newrect.bottomRight().x() + gi->pos().x() - newpoint.x(), newpoint.y() - gi->pos().y()));
 122                 gi->setPos(QPointF(newpoint.x(), gi->pos().y()));
 123                 break;
 124             case TopRight:
 125                 newrect.setBottomRight(QPointF(newpoint.x() - gi->pos().x(), newrect.bottom() + gi->pos().y() - newpoint.y()));
 126                 gi->setPos(QPointF(gi->pos().x(), newpoint.y()));
 127                 break;
 128             case BottomRight:
 129                 newrect.setBottomRight(newpoint - gi->pos());
 130                 break;
 131             case Left:
 132                 newrect.setRight(gi->pos().x() + newrect.width() - newpoint.x());
 133                 gi->setPos(QPointF(newpoint.x(), gi->pos().y()));
 134                 break;
 135             case Right:
 136                 newrect.setRight(newpoint.x() - gi->pos().x());
 137                 break;
 138             case Up:
 139                 newrect.setBottom(gi->pos().y() + newrect.bottom() - newpoint.y());
 140                 gi->setPos(QPointF(gi->pos().x(), newpoint.y()));
 141                 break;
 142             case Down:
 143                 newrect.setBottom(newpoint.y() - gi->pos().y());
 144                 break;
 145             default:
 146                 QPointF diff = e->scenePos() - m_clickPoint;
 147                 m_clickPoint = e->scenePos();
 148                 gi->moveBy(diff.x(), diff.y());
 149                 break;
 150             }
 151             gi->setRect(newrect);
 152             //gi->setPos(m_selectedItem->scenePos());
 153             /*if (resizeMode == NoResize) {
 154                 QGraphicsScene::mouseMoveEvent(e);
 155                 return;
 156             }*/
 157         } else if (m_selectedItem->type() == 8) {
 158             QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(m_selectedItem);
 159             if (t->textInteractionFlags() & Qt::TextEditorInteraction) {
 160                 QGraphicsScene::mouseMoveEvent(e);
 161                 return;
 162             }
 163             QPointF diff = e->scenePos() - m_clickPoint;
 164             m_clickPoint = e->scenePos();
 165             m_selectedItem->moveBy(diff.x(), diff.y());
 166         }
 167         emit itemMoved();
 168     } else {
 169
 170         QPointF p = e->scenePos();
 171         p += QPoint(-2, -2);
 172         resizeMode = NoResize;
 173
 174         foreach(QGraphicsItem* g, items(QRectF(p , QSizeF(4, 4)).toRect())) {
 175
 176             if (g->type() == 3) {
 177
 178                 QGraphicsRectItem *gi = (QGraphicsRectItem*)g;
 179                 QRectF r = gi->rect();
 180                 r.translate(gi->scenePos());
 181
 182                 if ((r.toRect().topLeft() - e->scenePos().toPoint()).manhattanLength() < 6 / zoom) {
 183                     setCursor(QCursor(Qt::SizeFDiagCursor));
 184                 } else if ((r.toRect().bottomLeft() - e->scenePos().toPoint()).manhattanLength() < 6 / zoom) {
 185                     setCursor(QCursor(Qt::SizeBDiagCursor));
 186                 } else if ((r.toRect().topRight() - e->scenePos().toPoint()).manhattanLength() < 6 / zoom) {
 187                     setCursor(QCursor(Qt::SizeBDiagCursor));
 188                 } else if ((r.toRect().bottomRight() - e->scenePos().toPoint()).manhattanLength() < 6 / zoom) {
 189                     setCursor(QCursor(Qt::SizeFDiagCursor));
 190                 } else if (qAbs(r.toRect().left() - e->scenePos().toPoint().x()) < 3 / zoom) {
 191                     setCursor(Qt::SizeHorCursor);
 192                 } else if (qAbs(r.toRect().right() - e->scenePos().toPoint().x()) < 3 / zoom) {
 193                     setCursor(Qt::SizeHorCursor);
 194                 } else if (qAbs(r.toRect().top() - e->scenePos().toPoint().y()) < 3 / zoom) {
 195                     setCursor(Qt::SizeVerCursor);
 196                 } else if (qAbs(r.toRect().bottom() - e->scenePos().toPoint().y()) < 3 / zoom) {
 197                     setCursor(Qt::SizeVerCursor);
 198                 } else setCursor(QCursor(Qt::ArrowCursor));
 199             }
 200             break;
 201         }
 202         QGraphicsScene::mouseMoveEvent(e);
 203     }
 204 }
 205
 206 void GraphicsSceneRectMove::wheelEvent(QGraphicsSceneWheelEvent * wheelEvent) {
 207     QList<QGraphicsView*> viewlist = views();
 208     //kDebug() << wheelEvent->delta() << " " << zoom;
 209     double scale = 1.0;
 210     if (viewlist.size() > 0) {
 211         if (wheelEvent->delta() < 0) emit sceneZoom(true);
 212         else emit sceneZoom(false);
 213     }
 214 }
 215
 216 void GraphicsSceneRectMove::setScale(double s) {
 217     if (zoom < 1.0 / 7.0 && s < 1.0) return;
 218     else if (zoom > 10.0 / 7.9 && s > 1.0) return;
 219     QList<QGraphicsView*> viewlist = views();
 220     if (viewlist.size() > 0) {
 221         viewlist[0]->scale(s, s);
 222         zoom = zoom * s;
 223     }
 224     //kDebug()<<"//////////  ZOOM: "<<zoom;
 225 }
 226
 227 void GraphicsSceneRectMove::setZoom(double s) {
 228     QList<QGraphicsView*> viewlist = views();
 229     if (viewlist.size() > 0) {
 230         viewlist[0]->resetTransform();
 231         viewlist[0]->scale(s, s);
 232         zoom = s;
 233     }
 234
 235     //kDebug()<<"//////////  ZOOM: "<<zoom;
 236 }
 237
 238 void GraphicsSceneRectMove::setCursor(QCursor c) {
 239     QList<QGraphicsView*> l = views();
 240     foreach(QGraphicsView* v, l) {
 241         v->setCursor(c);
 242     }
 243 }