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

   1
   2 #include <KDebug>
   3 #include <QGraphicsSceneMouseEvent>
   4 #include <QGraphicsRectItem>
   5 #include <QGraphicsSvgItem>
   6 #include <QGraphicsView>
   7 #include <QCursor>
   8 #include <QList>
   9 #include <QKeyEvent>
  10 #include <QApplication>
  11
  12 #include "graphicsscenerectmove.h"
  13
  14 GraphicsSceneRectMove::GraphicsSceneRectMove(QObject *parent): QGraphicsScene(parent), m_selectedItem(NULL), resizeMode(NoResize), m_tool(TITLE_RECTANGLE) {
  15     //grabMouse();
  16     zoom = 1.0;
  17     setBackgroundBrush(QBrush(Qt::transparent));
  18 }
  19
  20 void GraphicsSceneRectMove::setSelectedItem(QGraphicsItem *item) {
  21     clearSelection();
  22     m_selectedItem = item;
  23     item->setSelected(true);
  24     update();
  25 }
  26
  27 TITLETOOL GraphicsSceneRectMove::tool() {
  28     return m_tool;
  29 }
  30
  31 void GraphicsSceneRectMove::setTool(TITLETOOL tool) {
  32     m_tool = tool;
  33     switch (m_tool) {
  34     case TITLE_RECTANGLE:
  35         setCursor(Qt::CrossCursor);
  36         break;
  37     case TITLE_TEXT:
  38         setCursor(Qt::IBeamCursor);
  39         break;
  40     default:
  41         setCursor(Qt::ArrowCursor);
  42     }
  43 }
  44
  45 //virtual
  46 void GraphicsSceneRectMove::keyPressEvent(QKeyEvent * keyEvent) {
  47     if (m_selectedItem == NULL) {
  48         QGraphicsScene::keyPressEvent(keyEvent);
  49         return;
  50     }
  51     int diff = 1;
  52     if (m_selectedItem->type() == 8) {
  53         QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(m_selectedItem);
  54         if (t->textInteractionFlags() & Qt::TextEditorInteraction) {
  55             QGraphicsScene::keyPressEvent(keyEvent);
  56             return;
  57         }
  58     }
  59     if (keyEvent->modifiers() & Qt::ControlModifier) diff = 10;
  60     switch (keyEvent->key()) {
  61     case Qt::Key_Left:
  62         m_selectedItem->setPos(m_selectedItem->pos() - QPointF(diff, 0));
  63         emit itemMoved();
  64         break;
  65     case Qt::Key_Right:
  66         m_selectedItem->setPos(m_selectedItem->pos() + QPointF(diff, 0));
  67         emit itemMoved();
  68         break;
  69     case Qt::Key_Up:
  70         m_selectedItem->setPos(m_selectedItem->pos() - QPointF(0, diff));
  71         emit itemMoved();
  72         break;
  73     case Qt::Key_Down:
  74         m_selectedItem->setPos(m_selectedItem->pos() + QPointF(0, diff));
  75         emit itemMoved();
  76         break;
  77     case Qt::Key_Delete:
  78     case Qt::Key_Backspace:
  79         delete m_selectedItem;
  80         m_selectedItem = NULL;
  81         emit selectionChanged();
  82         break;
  83     default:
  84         QGraphicsScene::keyPressEvent(keyEvent);
  85     }
  86     emit actionFinished();
  87 }
  88
  89 //virtual
  90 void GraphicsSceneRectMove::mouseDoubleClickEvent(QGraphicsSceneMouseEvent* e) {
  91     QPointF p = e->scenePos();
  92     p += QPoint(-2, -2);
  93     resizeMode = NoResize;
  94     m_selectedItem = NULL;
  95     QGraphicsItem* g = items(QRectF(p , QSizeF(4, 4)).toRect()).at(0);
  96     if (g) {
  97         if (g->type() == 8) {
  98             QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(g);
  99             t->setTextInteractionFlags(Qt::TextEditorInteraction);
 100         }
 101     }
 102     QGraphicsScene::mouseDoubleClickEvent(e);
 103 }
 104
 105 void GraphicsSceneRectMove::mouseReleaseEvent(QGraphicsSceneMouseEvent *e) {
 106     if (m_tool == TITLE_RECTANGLE && m_selectedItem) setSelectedItem(m_selectedItem);
 107     emit actionFinished();
 108     QGraphicsScene::mouseReleaseEvent(e);
 109 }
 110
 111 void GraphicsSceneRectMove::mousePressEvent(QGraphicsSceneMouseEvent* e) {
 112     QPointF p = e->scenePos();
 113     p += QPoint(-2, -2);
 114     resizeMode = NoResize;
 115     const QList <QGraphicsItem *> list = items(QRectF(p , QSizeF(4, 4)).toRect());
 116     QGraphicsItem *item = NULL;
 117     bool hasSelected = false;
 118
 119     if (m_tool == TITLE_SELECT) {
 120         foreach(QGraphicsItem *g, list) {
 121             kDebug() << " - - CHECKING ITEM Z:" << g->zValue() << ", TYPE: " << g->type();
 122             // check is there is a selected item in list
 123             if (g->zValue() > -1000 && g->isSelected()) {
 124                 hasSelected = true;
 125                 item = g;
 126                 break;
 127             }
 128         }
 129         if (item == NULL) {
 130             if (m_selectedItem && m_selectedItem->type() == 8) {
 131                 // disable text editing
 132                 QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(m_selectedItem);
 133                 t->setTextInteractionFlags(Qt::NoTextInteraction);
 134             }
 135             m_selectedItem = NULL;
 136             foreach(QGraphicsItem* g, list) {
 137                 if (g->zValue() > -1000) {
 138                     item = g;
 139                     break;
 140                 }
 141             }
 142         }
 143         if (item != NULL) {
 144             m_clickPoint = e->scenePos();
 145             m_selectedItem = item;
 146             kDebug() << "/////////  ITEM TYPE: " << item->type();
 147             if (item->type() == 8) {
 148                 QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(item);
 149                 if (t->textInteractionFlags() == Qt::TextEditorInteraction) {
 150                     QGraphicsScene::mousePressEvent(e);
 151                     return;
 152                 }
 153                 t->setTextInteractionFlags(Qt::NoTextInteraction);
 154                 setCursor(Qt::ClosedHandCursor);
 155             } else if (item->type() == 3 || item->type() == 13 || item->type() == 7) {
 156                 QRectF r;
 157                 if (m_selectedItem->type() == 3) {
 158                     r = ((QGraphicsRectItem*)m_selectedItem)->rect();
 159                 } else r = m_selectedItem->boundingRect();
 160
 161                 r.translate(item->scenePos());
 162                 if ((r.toRect().topLeft() - e->scenePos().toPoint()).manhattanLength() < 6 / zoom) {
 163                     resizeMode = TopLeft;
 164                 } else if ((r.toRect().bottomLeft() - e->scenePos().toPoint()).manhattanLength() < 6 / zoom) {
 165                     resizeMode = BottomLeft;
 166                 } else if ((r.toRect().topRight() - e->scenePos().toPoint()).manhattanLength() < 6 / zoom) {
 167                     resizeMode = TopRight;
 168                 } else if ((r.toRect().bottomRight() - e->scenePos().toPoint()).manhattanLength() < 6 / zoom) {
 169                     resizeMode = BottomRight;
 170                 } else if (qAbs(r.toRect().left() - e->scenePos().toPoint().x()) < 3 / zoom) {
 171                     resizeMode = Left;
 172                 } else if (qAbs(r.toRect().right() - e->scenePos().toPoint().x()) < 3 / zoom) {
 173                     resizeMode = Right;
 174                 } else if (qAbs(r.toRect().top() - e->scenePos().toPoint().y()) < 3 / zoom) {
 175                     resizeMode = Up;
 176                 } else if (qAbs(r.toRect().bottom() - e->scenePos().toPoint().y()) < 3 / zoom) {
 177                     resizeMode = Down;
 178                 } else setCursor(Qt::ClosedHandCursor);
 179             }
 180         }
 181         QGraphicsScene::mousePressEvent(e);
 182     } else if (m_tool == TITLE_RECTANGLE) {
 183         m_clickPoint = e->scenePos();
 184         m_selectedItem = NULL;
 185     } else if (m_tool == TITLE_TEXT) {
 186         m_selectedItem = addText(QString());
 187         emit newText((QGraphicsTextItem *) m_selectedItem);
 188         m_selectedItem->setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
 189         ((QGraphicsTextItem *)m_selectedItem)->setTextInteractionFlags(Qt::TextEditorInteraction);
 190         m_selectedItem->setPos(e->scenePos());
 191         QGraphicsScene::mousePressEvent(e);
 192     }
 193
 194     kDebug() << "//////  MOUSE CLICK, RESIZE MODE: " << resizeMode;
 195
 196 }
 197
 198
 199 //virtual
 200 void GraphicsSceneRectMove::mouseMoveEvent(QGraphicsSceneMouseEvent* e) {
 201
 202     if (m_selectedItem && e->buttons() & Qt::LeftButton) {
 203         if (m_selectedItem->type() == 3 || m_selectedItem->type() == 13 || m_selectedItem->type() == 7) {
 204             QRectF newrect;
 205             if (m_selectedItem->type() == 3) {
 206                 newrect = ((QGraphicsRectItem*)m_selectedItem)->rect();
 207             } else newrect = m_selectedItem->boundingRect();
 208
 209             QPointF newpoint = e->scenePos();
 210             //newpoint -= m_selectedItem->scenePos();
 211             switch (resizeMode) {
 212             case TopLeft:
 213                 newrect.setBottomRight(newrect.bottomRight() + m_selectedItem->pos() - newpoint);
 214                 m_selectedItem->setPos(newpoint);
 215                 break;
 216             case BottomLeft:
 217                 newrect.setBottomRight(QPointF(newrect.bottomRight().x() + m_selectedItem->pos().x() - newpoint.x(), newpoint.y() - m_selectedItem->pos().y()));
 218                 m_selectedItem->setPos(QPointF(newpoint.x(), m_selectedItem->pos().y()));
 219                 break;
 220             case TopRight:
 221                 newrect.setBottomRight(QPointF(newpoint.x() - m_selectedItem->pos().x(), newrect.bottom() + m_selectedItem->pos().y() - newpoint.y()));
 222                 m_selectedItem->setPos(QPointF(m_selectedItem->pos().x(), newpoint.y()));
 223                 break;
 224             case BottomRight:
 225                 newrect.setBottomRight(newpoint - m_selectedItem->pos());
 226                 break;
 227             case Left:
 228                 newrect.setRight(m_selectedItem->pos().x() + newrect.width() - newpoint.x());
 229                 m_selectedItem->setPos(QPointF(newpoint.x(), m_selectedItem->pos().y()));
 230                 break;
 231             case Right:
 232                 newrect.setRight(newpoint.x() - m_selectedItem->pos().x());
 233                 break;
 234             case Up:
 235                 newrect.setBottom(m_selectedItem->pos().y() + newrect.bottom() - newpoint.y());
 236                 m_selectedItem->setPos(QPointF(m_selectedItem->pos().x(), newpoint.y()));
 237                 break;
 238             case Down:
 239                 newrect.setBottom(newpoint.y() - m_selectedItem->pos().y());
 240                 break;
 241             default:
 242                 QPointF diff = e->scenePos() - m_clickPoint;
 243                 m_clickPoint = e->scenePos();
 244                 m_selectedItem->moveBy(diff.x(), diff.y());
 245                 break;
 246             }
 247             if (m_selectedItem->type() == 3 && resizeMode != NoResize) {
 248                 QGraphicsRectItem *gi = (QGraphicsRectItem*)m_selectedItem;
 249                 gi->setRect(newrect);
 250             }
 251             /*else {
 252             qreal s;
 253             if (resizeMode == Left || resizeMode == Right ) s = m_selectedItem->boundingRect().width() / newrect.width();
 254             else s = m_selectedItem->boundingRect().height() / newrect.height();
 255             m_selectedItem->scale( 1 / s, 1 / s );
 256             kDebug()<<"/// SCALING SVG, RESIZE MODE: "<<resizeMode<<", RECT:"<<m_selectedItem->boundingRect();
 257             }*/
 258             //gi->setPos(m_selectedItem->scenePos());
 259             /*if (resizeMode == NoResize) {
 260                 QGraphicsScene::mouseMoveEvent(e);
 261                 return;
 262             }*/
 263         } else if (m_selectedItem->type() == 8) {
 264             QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(m_selectedItem);
 265             if (t->textInteractionFlags() & Qt::TextEditorInteraction) {
 266                 QGraphicsScene::mouseMoveEvent(e);
 267                 return;
 268             }
 269             QPointF diff = e->scenePos() - m_clickPoint;
 270             m_clickPoint = e->scenePos();
 271             m_selectedItem->moveBy(diff.x(), diff.y());
 272         }
 273         emit itemMoved();
 274     } else if (m_tool == TITLE_SELECT) {
 275
 276         QPointF p = e->scenePos();
 277         p += QPoint(-2, -2);
 278         resizeMode = NoResize;
 279         bool itemFound = false;
 280         foreach(const QGraphicsItem* g, items(QRectF(p , QSizeF(4, 4)).toRect())) {
 281             if ((g->type() == 13 || g->type() == 7) && g->zValue() > -1000) {
 282                 // image or svg item
 283                 setCursor(Qt::OpenHandCursor);
 284                 break;
 285             } else if (g->type() == 3 && g->zValue() > -1000) {
 286                 QRectF r = ((QGraphicsRectItem*)g)->rect();
 287                 r.translate(g->scenePos());
 288                 itemFound = true;
 289                 if ((r.toRect().topLeft() - e->scenePos().toPoint()).manhattanLength() < 6 / zoom) {
 290                     setCursor(QCursor(Qt::SizeFDiagCursor));
 291                 } else if ((r.toRect().bottomLeft() - e->scenePos().toPoint()).manhattanLength() < 6 / zoom) {
 292                     setCursor(QCursor(Qt::SizeBDiagCursor));
 293                 } else if ((r.toRect().topRight() - e->scenePos().toPoint()).manhattanLength() < 6 / zoom) {
 294                     setCursor(QCursor(Qt::SizeBDiagCursor));
 295                 } else if ((r.toRect().bottomRight() - e->scenePos().toPoint()).manhattanLength() < 6 / zoom) {
 296                     setCursor(QCursor(Qt::SizeFDiagCursor));
 297                 } else if (qAbs(r.toRect().left() - e->scenePos().toPoint().x()) < 3 / zoom) {
 298                     setCursor(Qt::SizeHorCursor);
 299                 } else if (qAbs(r.toRect().right() - e->scenePos().toPoint().x()) < 3 / zoom) {
 300                     setCursor(Qt::SizeHorCursor);
 301                 } else if (qAbs(r.toRect().top() - e->scenePos().toPoint().y()) < 3 / zoom) {
 302                     setCursor(Qt::SizeVerCursor);
 303                 } else if (qAbs(r.toRect().bottom() - e->scenePos().toPoint().y()) < 3 / zoom) {
 304                     setCursor(Qt::SizeVerCursor);
 305                 } else setCursor(Qt::OpenHandCursor);
 306                 break;
 307             }
 308             if (!itemFound) setCursor(Qt::ArrowCursor);
 309         }
 310         QGraphicsScene::mouseMoveEvent(e);
 311     } else if (m_tool == TITLE_RECTANGLE && e->buttons() & Qt::LeftButton) {
 312         if (m_selectedItem == NULL && (m_clickPoint.toPoint() - e->scenePos().toPoint()).manhattanLength() >= QApplication::startDragDistance()) {
 313             // create new rect item
 314             m_selectedItem = addRect(0, 0, e->scenePos().x() - m_clickPoint.x(), e->scenePos().y() - m_clickPoint.y());
 315             emit newRect((QGraphicsRectItem *) m_selectedItem);
 316             m_selectedItem->setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
 317             m_selectedItem->setPos(m_clickPoint);
 318             resizeMode = BottomRight;
 319             QGraphicsScene::mouseMoveEvent(e);
 320         }
 321     }
 322 }
 323
 324 void GraphicsSceneRectMove::wheelEvent(QGraphicsSceneWheelEvent * wheelEvent) {
 325     QList<QGraphicsView*> viewlist = views();
 326     //kDebug() << wheelEvent->delta() << " " << zoom;
 327     double scale = 1.0;
 328     if (viewlist.size() > 0) {
 329         if (wheelEvent->delta() < 0) emit sceneZoom(true);
 330         else emit sceneZoom(false);
 331     }
 332 }
 333
 334 void GraphicsSceneRectMove::setScale(double s) {
 335     if (zoom < 1.0 / 7.0 && s < 1.0) return;
 336     else if (zoom > 10.0 / 7.9 && s > 1.0) return;
 337     QList<QGraphicsView*> viewlist = views();
 338     if (viewlist.size() > 0) {
 339         viewlist[0]->scale(s, s);
 340         zoom = zoom * s;
 341     }
 342     //kDebug()<<"//////////  ZOOM: "<<zoom;
 343 }
 344
 345 void GraphicsSceneRectMove::setZoom(double s) {
 346     QList<QGraphicsView*> viewlist = views();
 347     if (viewlist.size() > 0) {
 348         viewlist[0]->resetTransform();
 349         viewlist[0]->scale(s, s);
 350         zoom = s;
 351     }
 352
 353     //kDebug()<<"//////////  ZOOM: "<<zoom;
 354 }
 355
 356 void GraphicsSceneRectMove::setCursor(QCursor c) {
 357     const QList<QGraphicsView*> l = views();
 358     foreach(QGraphicsView* v, l) {
 359         v->setCursor(c);
 360     }
 361 }