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

   1 /***************************************************************************
   2  *   copyright (C) 2008 by Marco Gittler (g.marco@freenet.de)                                 *
   3  *   Copyright (C) 2008 by Jean-Baptiste Mardelle (jb@kdenlive.org)        *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA          *
  19  ***************************************************************************/
  20
  21 #include "graphicsscenerectmove.h"
  22
  23 #include <KDebug>
  24 #include <QGraphicsSceneMouseEvent>
  25 #include <QGraphicsRectItem>
  26 #include <QGraphicsSvgItem>
  27 #include <QGraphicsView>
  28 #include <QCursor>
  29 #include <QTextCursor>
  30 #include <QList>
  31 #include <QKeyEvent>
  32 #include <QApplication>
  33 #include <QTextBlock>
  34
  35
  36 GraphicsSceneRectMove::GraphicsSceneRectMove(QObject *parent) :
  37         QGraphicsScene(parent),
  38         m_selectedItem(NULL),
  39         m_resizeMode(NoResize),
  40         m_tool(TITLE_RECTANGLE)
  41 {
  42     //grabMouse();
  43     m_zoom = 1.0;
  44     setBackgroundBrush(QBrush(Qt::transparent));
  45 }
  46
  47 void GraphicsSceneRectMove::setSelectedItem(QGraphicsItem *item)
  48 {
  49     clearSelection();
  50     m_selectedItem = item;
  51     item->setSelected(true);
  52     update();
  53 }
  54
  55 TITLETOOL GraphicsSceneRectMove::tool()
  56 {
  57     return m_tool;
  58 }
  59
  60 void GraphicsSceneRectMove::setTool(TITLETOOL tool)
  61 {
  62     m_tool = tool;
  63     switch (m_tool) {
  64     case TITLE_RECTANGLE:
  65         setCursor(Qt::CrossCursor);
  66         break;
  67     case TITLE_TEXT:
  68         setCursor(Qt::IBeamCursor);
  69         break;
  70     default:
  71         setCursor(Qt::ArrowCursor);
  72     }
  73 }
  74
  75 //virtual
  76 void GraphicsSceneRectMove::keyPressEvent(QKeyEvent * keyEvent)
  77 {
  78     if (m_selectedItem == NULL) {
  79         QGraphicsScene::keyPressEvent(keyEvent);
  80         return;
  81     }
  82     int diff = 1;
  83     if (m_selectedItem->type() == 8) {
  84         QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(m_selectedItem);
  85         if (t->textInteractionFlags() & Qt::TextEditorInteraction) {
  86             QGraphicsScene::keyPressEvent(keyEvent);
  87             return;
  88         }
  89     }
  90     if (keyEvent->modifiers() & Qt::ControlModifier) diff = 10;
  91     switch (keyEvent->key()) {
  92     case Qt::Key_Left:
  93         m_selectedItem->setPos(m_selectedItem->pos() - QPointF(diff, 0));
  94         emit itemMoved();
  95         break;
  96     case Qt::Key_Right:
  97         m_selectedItem->setPos(m_selectedItem->pos() + QPointF(diff, 0));
  98         emit itemMoved();
  99         break;
 100     case Qt::Key_Up:
 101         m_selectedItem->setPos(m_selectedItem->pos() - QPointF(0, diff));
 102         emit itemMoved();
 103         break;
 104     case Qt::Key_Down:
 105         m_selectedItem->setPos(m_selectedItem->pos() + QPointF(0, diff));
 106         emit itemMoved();
 107         break;
 108     case Qt::Key_Delete:
 109     case Qt::Key_Backspace:
 110         delete m_selectedItem;
 111         m_selectedItem = NULL;
 112         emit selectionChanged();
 113         break;
 114     default:
 115         QGraphicsScene::keyPressEvent(keyEvent);
 116     }
 117     emit actionFinished();
 118 }
 119
 120 //virtual
 121 void GraphicsSceneRectMove::mouseDoubleClickEvent(QGraphicsSceneMouseEvent* e)
 122 {
 123     QPointF p = e->scenePos();
 124     p += QPoint(-2, -2);
 125     m_resizeMode = NoResize;
 126     m_selectedItem = NULL;
 127     QGraphicsItem* g = items(QRectF(p , QSizeF(4, 4)).toRect()).at(0);
 128     if (g) {
 129         if (g->type() == 8) {
 130             QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(g);
 131             m_selectedItem = g;
 132             t->setTextInteractionFlags(Qt::TextEditorInteraction);
 133         } else emit doubleClickEvent();
 134     }
 135     QGraphicsScene::mouseDoubleClickEvent(e);
 136 }
 137
 138 void GraphicsSceneRectMove::mouseReleaseEvent(QGraphicsSceneMouseEvent *e)
 139 {
 140     if (m_tool == TITLE_RECTANGLE && m_selectedItem) setSelectedItem(m_selectedItem);
 141     QGraphicsScene::mouseReleaseEvent(e);
 142     emit actionFinished();
 143 }
 144
 145 void GraphicsSceneRectMove::mousePressEvent(QGraphicsSceneMouseEvent* e)
 146 {
 147     m_clickPoint = e->screenPos();
 148     QPointF p = e->scenePos();
 149     p += QPoint(-2, -2);
 150     m_resizeMode = NoResize;
 151     const QList <QGraphicsItem *> list = items(QRectF(p , QSizeF(4, 4)).toRect());
 152     QGraphicsItem *item = NULL;
 153     bool hasSelected = false;
 154
 155     if (m_tool == TITLE_SELECT) {
 156         foreach(QGraphicsItem *g, list) {
 157             kDebug() << " - - CHECKING ITEM Z:" << g->zValue() << ", TYPE: " << g->type();
 158             // check is there is a selected item in list
 159             if (g->zValue() > -1000 && g->isSelected()) {
 160                 hasSelected = true;
 161                 item = g;
 162                 break;
 163             }
 164         }
 165         if (item == NULL) {
 166             if (m_selectedItem && m_selectedItem->type() == 8) {
 167                 // disable text editing
 168                 QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(m_selectedItem);
 169                 t->textCursor().setPosition(0);
 170                 QTextBlock cur = t->textCursor().block();
 171                 t->setTextCursor(QTextCursor(cur));
 172                 t->setTextInteractionFlags(Qt::NoTextInteraction);
 173             }
 174             m_selectedItem = NULL;
 175             foreach(QGraphicsItem* g, list) {
 176                 if (g->zValue() > -1000) {
 177                     item = g;
 178                     break;
 179                 }
 180             }
 181         }
 182         if (item != NULL) {
 183             m_sceneClickPoint = e->scenePos();
 184             m_selectedItem = item;
 185             kDebug() << "/////////  ITEM TYPE: " << item->type();
 186             if (item->type() == 8) {
 187                 QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(item);
 188                 if (t->textInteractionFlags() == Qt::TextEditorInteraction) {
 189                     QGraphicsScene::mousePressEvent(e);
 190                     return;
 191                 }
 192                 t->setTextInteractionFlags(Qt::NoTextInteraction);
 193                 setCursor(Qt::ClosedHandCursor);
 194             } else if (item->type() == 3 || item->type() == 13 || item->type() == 7) {
 195                 QRectF r;
 196                 if (m_selectedItem->type() == 3)
 197                     r = ((QGraphicsRectItem*)m_selectedItem)->rect();
 198                 else
 199                     r = m_selectedItem->boundingRect();
 200                 /*
 201                  * The vertices of the rectangle (check for matrix
 202                  * transformation); to be replaced by QTransform::map()?
 203                  */
 204                 QPointF itemOrigin = item->scenePos();
 205                 QTransform transform = item->transform();
 206                 QPointF topLeft(transform.m11() * r.toRect().left() + transform.m21() * r.toRect().top() + transform.m31() + itemOrigin.x(), transform.m22() * r.toRect().top() + transform.m12() * r.toRect().left() + transform.m32() + itemOrigin.y());
 207                 QPointF bottomLeft(transform.m11() * r.toRect().left() + transform.m21() * r.toRect().bottom() + transform.m31() + itemOrigin.x(), transform.m22() * r.toRect().bottom() + transform.m12() * r.toRect().left() + transform.m32() + itemOrigin.y());
 208                 QPointF topRight(transform.m11() * r.toRect().right() + transform.m21() * r.toRect().top() + transform.m31() + itemOrigin.x(), transform.m22() * r.toRect().top() + transform.m12() * r.toRect().right() + transform.m32() + itemOrigin.y());
 209                 QPointF bottomRight(transform.m11() * r.toRect().right() + transform.m21() * r.toRect().bottom() + transform.m31() + itemOrigin.x(), transform.m22() * r.toRect().bottom() + transform.m12() * r.toRect().right() + transform.m32() + itemOrigin.y());
 210                 // The borders (using the transformed coordinates)
 211                 QGraphicsLineItem borderTop(topLeft.x(), topLeft.y(), topRight.x(), topRight.y());
 212                 QGraphicsLineItem borderRight(topRight.x(), topRight.y(), bottomRight.x(), bottomRight.y());
 213                 QGraphicsLineItem borderBottom(bottomRight.x(), bottomRight.y(), bottomLeft.x(), bottomLeft.y());
 214                 QGraphicsLineItem borderLeft(bottomLeft.x(), bottomLeft.y(), topLeft.x(), topLeft.y());
 215                 // The area interested by the mouse pointer
 216                 QPainterPath mouseArea;
 217                 mouseArea.addRect(e->scenePos().toPoint().x() - 4 / m_zoom, e->scenePos().toPoint().y() - 4 / m_zoom, 8 / m_zoom, 8 / m_zoom);
 218                 // Check for collisions between the mouse and the borders
 219                 if (borderLeft.collidesWithPath(mouseArea) && borderTop.collidesWithPath(mouseArea))
 220                     m_resizeMode = TopLeft;
 221                 else if (borderLeft.collidesWithPath(mouseArea) && borderBottom.collidesWithPath(mouseArea))
 222                     m_resizeMode = BottomLeft;
 223                 else if (borderRight.collidesWithPath(mouseArea) && borderTop.collidesWithPath(mouseArea))
 224                     m_resizeMode = TopRight;
 225                 else if (borderRight.collidesWithPath(mouseArea) && borderBottom.collidesWithPath(mouseArea))
 226                     m_resizeMode = BottomRight;
 227                 else if (borderLeft.collidesWithPath(mouseArea))
 228                     m_resizeMode = Left;
 229                 else if (borderRight.collidesWithPath(mouseArea))
 230                     m_resizeMode = Right;
 231                 else if (borderTop.collidesWithPath(mouseArea))
 232                     m_resizeMode = Up;
 233                 else if (borderBottom.collidesWithPath(mouseArea))
 234                     m_resizeMode = Down;
 235                 else
 236                     setCursor(Qt::ClosedHandCursor);
 237             }
 238         }
 239         QGraphicsScene::mousePressEvent(e);
 240     } else if (m_tool == TITLE_RECTANGLE) {
 241         m_sceneClickPoint = e->scenePos();
 242         m_selectedItem = NULL;
 243     } else if (m_tool == TITLE_TEXT) {
 244         m_selectedItem = addText(QString());
 245         emit newText((QGraphicsTextItem *) m_selectedItem);
 246         m_selectedItem->setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
 247         ((QGraphicsTextItem *)m_selectedItem)->setTextInteractionFlags(Qt::TextEditorInteraction);
 248         m_selectedItem->setPos(e->scenePos());
 249         QGraphicsScene::mousePressEvent(e);
 250     }
 251
 252     kDebug() << "//////  MOUSE CLICK, RESIZE MODE: " << m_resizeMode;
 253
 254 }
 255
 256 void GraphicsSceneRectMove::clearTextSelection()
 257 {
 258     if (m_selectedItem && m_selectedItem->type() == 8) {
 259         // disable text editing
 260         QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(m_selectedItem);
 261         t->textCursor().setPosition(0);
 262         QTextBlock cur = t->textCursor().block();
 263         t->setTextCursor(QTextCursor(cur));
 264         t->setTextInteractionFlags(Qt::NoTextInteraction);
 265     }
 266     m_selectedItem = NULL;
 267     clearSelection();
 268 }
 269
 270 //virtual
 271 void GraphicsSceneRectMove::mouseMoveEvent(QGraphicsSceneMouseEvent* e)
 272 {
 273     if ((e->screenPos() - m_clickPoint).manhattanLength() < QApplication::startDragDistance()) {
 274         e->accept();
 275         return;
 276     }
 277     if (m_selectedItem && e->buttons() & Qt::LeftButton) {
 278         if (m_selectedItem->type() == 3 || m_selectedItem->type() == 13 || m_selectedItem->type() == 7) {
 279             QRectF newrect;
 280             if (m_selectedItem->type() == 3)
 281                 newrect = ((QGraphicsRectItem*)m_selectedItem)->rect();
 282             else
 283                 newrect = m_selectedItem->boundingRect();
 284             QPointF newpoint = e->scenePos();
 285             /*
 286              * The vertices of the rectangle (check for matrix
 287              * transformation); to be replaced by QTransform::map()?
 288              */
 289             QPointF itemOrigin = m_selectedItem->scenePos();
 290             QTransform transform = m_selectedItem->transform();
 291             QPointF topLeft(transform.m11() * newrect.toRect().left() + transform.m21() * newrect.toRect().top() + transform.m31() + itemOrigin.x(), transform.m22() * newrect.toRect().top() + transform.m12() * newrect.toRect().left() + transform.m32() + itemOrigin.y());
 292             QPointF bottomLeft(transform.m11() * newrect.toRect().left() + transform.m21() * newrect.toRect().bottom() + transform.m31() + itemOrigin.x(), transform.m22() * newrect.toRect().bottom() + transform.m12() * newrect.toRect().left() + transform.m32() + itemOrigin.y());
 293             QPointF topRight(transform.m11() * newrect.toRect().right() + transform.m21() * newrect.toRect().top() + transform.m31() + itemOrigin.x(), transform.m22() * newrect.toRect().top() + transform.m12() * newrect.toRect().right() + transform.m32() + itemOrigin.y());
 294             QPointF bottomRight(transform.m11() * newrect.toRect().right() + transform.m21() * newrect.toRect().bottom() + transform.m31() + itemOrigin.x(), transform.m22() * newrect.toRect().bottom() + transform.m12() * newrect.toRect().right() + transform.m32() + itemOrigin.y());
 295             // Convert the mouse coordinates applying inverted transformation
 296             QPointF newPointRelative = newpoint - itemOrigin;
 297             QPointF resizePoint(transform.inverted().m11() * newPointRelative.x() + transform.inverted().m21() * newPointRelative.y() + transform.inverted().m31(), transform.inverted().m22() * newPointRelative.y() + transform.inverted().m12() * newPointRelative.x() + transform.inverted().m32());
 298             /*
 299              * Will check if the mouse is on the right of the limit lines with a
 300              * determinant (it must be less than zero because the Y axis is
 301              * inverted)
 302              */
 303             int determinantH, determinantV;
 304             switch (m_resizeMode) {
 305             case TopLeft:
 306                 determinantV = (bottomRight.x() - newpoint.x()) * (topRight.y() - newpoint.y()) - (bottomRight.y() - newpoint.y()) * (topRight.x() - newpoint.x());
 307                 determinantH = (bottomLeft.x() - newpoint.x()) * (bottomRight.y() - newpoint.y()) - (bottomLeft.y() - newpoint.y()) * (bottomRight.x() - newpoint.x());
 308                 if (determinantV < 0) {
 309                     if (determinantH < 0) {
 310                         // resizePoint is not working for some reason
 311                         newrect.setBottomRight(QPointF(newrect.width() - (transform.inverted().m11() * resizePoint.x() + transform.inverted().m21() * resizePoint.y() + transform.inverted().m31()), newrect.bottom() - (transform.inverted().m22() * resizePoint.y() + transform.inverted().m12() * resizePoint.x() + transform.inverted().m32())));
 312                         m_selectedItem->setPos(resizePoint + itemOrigin);
 313                     } else
 314                         m_resizeMode = BottomLeft;
 315                 } else {
 316                     if (determinantH < 0)
 317                         m_resizeMode = TopRight;
 318                     else
 319                         m_resizeMode = BottomRight;
 320                 }
 321                 break;
 322             case BottomLeft:
 323                 determinantV = (bottomRight.x() - newpoint.x()) * (topRight.y() - newpoint.y()) - (bottomRight.y() - newpoint.y()) * (topRight.x() - newpoint.x());
 324                 determinantH = (topRight.x() - newpoint.x()) * (topLeft.y() - newpoint.y()) - (topRight.y() - newpoint.y()) * (topLeft.x() - newpoint.x());
 325                 if (determinantV < 0) {
 326                     if (determinantH < 0) {
 327                         newrect.setBottomRight(QPointF(newrect.width() - resizePoint.x(), resizePoint.y()));
 328                         m_selectedItem->setPos(QPointF(transform.m11() * resizePoint.x() + transform.m21() *(newrect.bottom() - resizePoint.y()) + transform.m31() + itemOrigin.x(), transform.m22() *(newrect.bottom() - resizePoint.y()) + transform.m12() * resizePoint.x() + transform.m32() + itemOrigin.y()));
 329                     } else
 330                         m_resizeMode = TopLeft;
 331                 } else {
 332                     if (determinantH < 0)
 333                         m_resizeMode = BottomRight;
 334                     else
 335                         m_resizeMode = TopRight;
 336                 }
 337                 break;
 338             case TopRight:
 339                 determinantV = (topLeft.x() - newpoint.x()) * (bottomLeft.y() - newpoint.y()) - (topLeft.y() - newpoint.y()) * (bottomLeft.x() - newpoint.x());
 340                 determinantH = (bottomLeft.x() - newpoint.x()) * (bottomRight.y() - newpoint.y()) - (bottomLeft.y() - newpoint.y()) * (bottomRight.x() - newpoint.x());
 341                 if (determinantV < 0) {
 342                     if (determinantH < 0) {
 343                         newrect.setBottomRight(QPointF(resizePoint.x(), newrect.bottom() - resizePoint.y()));
 344                         m_selectedItem->setPos(QPointF(transform.m11() *(newrect.width() - resizePoint.x()) + transform.m21() * resizePoint.y() + transform.m31() + itemOrigin.x(), transform.m22() * resizePoint.y() + transform.m12() *(newrect.width() - resizePoint.x()) + transform.m32() + itemOrigin.y()));
 345                     } else
 346                         m_resizeMode = BottomRight;
 347                 } else {
 348                     if (determinantH < 0)
 349                         m_resizeMode = TopLeft;
 350                     else
 351                         m_resizeMode = BottomLeft;
 352                 }
 353                 break;
 354             case BottomRight:
 355                 determinantV = (topLeft.x() - newpoint.x()) * (bottomLeft.y() - newpoint.y()) - (topLeft.y() - newpoint.y()) * (bottomLeft.x() - newpoint.x());
 356                 determinantH = (topRight.x() - newpoint.x()) * (topLeft.y() - newpoint.y()) - (topRight.y() - newpoint.y()) * (topLeft.x() - newpoint.x());
 357                 if (determinantV < 0) {
 358                     if (determinantH < 0)
 359                         newrect.setBottomRight(resizePoint);
 360                     else
 361                         m_resizeMode = TopRight;
 362                 } else {
 363                     if (determinantH < 0)
 364                         m_resizeMode = BottomLeft;
 365                     else
 366                         m_resizeMode = TopLeft;
 367                 }
 368                 break;
 369             case Left:
 370                 determinantV = (bottomRight.x() - newpoint.x()) * (topRight.y() - newpoint.y()) - (bottomRight.y() - newpoint.y()) * (topRight.x() - newpoint.x());
 371                 if (determinantV < 0) {
 372                     newrect.setRight(newrect.width() - resizePoint.x());
 373                     m_selectedItem->setPos(QPointF(transform.m11() * resizePoint.x() + transform.m31() + itemOrigin.x(), transform.m12() * resizePoint.x() + transform.m32() + itemOrigin.y()));
 374                 } else
 375                     m_resizeMode = Right;
 376                 break;
 377             case Right:
 378                 determinantV = (topLeft.x() - newpoint.x()) * (bottomLeft.y() - newpoint.y()) - (topLeft.y() - newpoint.y()) * (bottomLeft.x() - newpoint.x());
 379                 if (determinantV < 0)
 380                     newrect.setRight(resizePoint.x());
 381                 else
 382                     m_resizeMode = Left;
 383                 break;
 384             case Up:
 385                 determinantH = (bottomLeft.x() - newpoint.x()) * (bottomRight.y() - newpoint.y()) - (bottomLeft.y() - newpoint.y()) * (bottomRight.x() - newpoint.x());
 386                 if (determinantH < 0) {
 387                     newrect.setBottom(newrect.bottom() - resizePoint.y());
 388                     m_selectedItem->setPos(QPointF(transform.m21() * resizePoint.y() + transform.m31() + itemOrigin.x(), transform.m22() * resizePoint.y() + transform.m32() + itemOrigin.y()));
 389                 } else
 390                     m_resizeMode = Down;
 391                 break;
 392             case Down:
 393                 determinantH = (topRight.x() - newpoint.x()) * (topLeft.y() - newpoint.y()) - (topRight.y() - newpoint.y()) * (topLeft.x() - newpoint.x());
 394                 if (determinantH < 0)
 395                     newrect.setBottom(resizePoint.y());
 396                 else
 397                     m_resizeMode = Up;
 398                 break;
 399             default:
 400                 QPointF diff = e->scenePos() - m_sceneClickPoint;
 401                 m_sceneClickPoint = e->scenePos();
 402                 m_selectedItem->moveBy(diff.x(), diff.y());
 403                 break;
 404             }
 405             if (m_selectedItem->type() == 3 && m_resizeMode != NoResize) {
 406                 QGraphicsRectItem *gi = (QGraphicsRectItem*)m_selectedItem;
 407                 gi->setRect(newrect);
 408             }
 409             /*else {
 410             qreal s;
 411             if (resizeMode == Left || resizeMode == Right ) s = m_selectedItem->boundingRect().width() / newrect.width();
 412             else s = m_selectedItem->boundingRect().height() / newrect.height();
 413             m_selectedItem->scale( 1 / s, 1 / s );
 414             kDebug()<<"/// SCALING SVG, RESIZE MODE: "<<resizeMode<<", RECT:"<<m_selectedItem->boundingRect();
 415             }*/
 416             //gi->setPos(m_selectedItem->scenePos());
 417             /*if (resizeMode == NoResize) {
 418                 QGraphicsScene::mouseMoveEvent(e);
 419                 return;
 420             }*/
 421         } else if (m_selectedItem->type() == 8) {
 422             QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(m_selectedItem);
 423             if (t->textInteractionFlags() & Qt::TextEditorInteraction) {
 424                 QGraphicsScene::mouseMoveEvent(e);
 425                 return;
 426             }
 427             QPointF diff = e->scenePos() - m_sceneClickPoint;
 428             m_sceneClickPoint = e->scenePos();
 429             m_selectedItem->moveBy(diff.x(), diff.y());
 430         }
 431         emit itemMoved();
 432     } else if (m_tool == TITLE_SELECT) {
 433         QPointF p = e->scenePos();
 434         p += QPoint(-2, -2);
 435         m_resizeMode = NoResize;
 436         bool itemFound = false;
 437         foreach(const QGraphicsItem* g, items(QRectF(p , QSizeF(4, 4)).toRect())) {
 438             if ((g->type() == 13 || g->type() == 7) && g->zValue() > -1000) {
 439                 // image or svg item
 440                 setCursor(Qt::OpenHandCursor);
 441                 break;
 442             } else if (g->type() == 3 && g->zValue() > -1000) {
 443                 QRectF r = ((const QGraphicsRectItem*)g)->rect();
 444                 itemFound = true;
 445                 /*
 446                  * The vertices of the rectangle (check for matrix
 447                  * transformation); to be replaced by QTransform::map()?
 448                  */
 449                 QPointF itemOrigin = g->scenePos();
 450                 QTransform transform = g->transform();
 451                 QPointF topLeft(transform.m11() * r.toRect().left() + transform.m21() * r.toRect().top() + transform.m31() + itemOrigin.x(), transform.m22() * r.toRect().top() + transform.m12() * r.toRect().left() + transform.m32() + itemOrigin.y());
 452                 QPointF bottomLeft(transform.m11() * r.toRect().left() + transform.m21() * r.toRect().bottom() + transform.m31() + itemOrigin.x(), transform.m22() * r.toRect().bottom() + transform.m12() * r.toRect().left() + transform.m32() + itemOrigin.y());
 453                 QPointF topRight(transform.m11() * r.toRect().right() + transform.m21() * r.toRect().top() + transform.m31() + itemOrigin.x(), transform.m22() * r.toRect().top() + transform.m12() * r.toRect().right() + transform.m32() + itemOrigin.y());
 454                 QPointF bottomRight(transform.m11() * r.toRect().right() + transform.m21() * r.toRect().bottom() + transform.m31() + itemOrigin.x(), transform.m22() * r.toRect().bottom() + transform.m12() * r.toRect().right() + transform.m32() + itemOrigin.y());
 455                 // The borders (using the transformed coordinates)
 456                 QGraphicsLineItem borderTop(topLeft.x(), topLeft.y(), topRight.x(), topRight.y());
 457                 QGraphicsLineItem borderRight(topRight.x(), topRight.y(), bottomRight.x(), bottomRight.y());
 458                 QGraphicsLineItem borderBottom(bottomRight.x(), bottomRight.y(), bottomLeft.x(), bottomLeft.y());
 459                 QGraphicsLineItem borderLeft(bottomLeft.x(), bottomLeft.y(), topLeft.x(), topLeft.y());
 460                 // The area interested by the mouse pointer
 461                 QPainterPath mouseArea;
 462                 mouseArea.addRect(e->scenePos().toPoint().x() - 4 / m_zoom, e->scenePos().toPoint().y() - 4 / m_zoom, 8 / m_zoom, 8 / m_zoom);
 463                 // Check for collisions between the mouse and the borders
 464                 if ((borderLeft.collidesWithPath(mouseArea) && borderTop.collidesWithPath(mouseArea)) || (borderRight.collidesWithPath(mouseArea) && borderBottom.collidesWithPath(mouseArea)))
 465                     setResizeCursor(borderLeft.line().angle() - 45);
 466                 else if ((borderLeft.collidesWithPath(mouseArea) && borderBottom.collidesWithPath(mouseArea)) || (borderRight.collidesWithPath(mouseArea) && borderTop.collidesWithPath(mouseArea)))
 467                     setResizeCursor(borderLeft.line().angle() + 45);
 468                 else if (borderLeft.collidesWithPath(mouseArea) || borderRight.collidesWithPath(mouseArea))
 469                     setResizeCursor(borderLeft.line().angle());
 470                 else if (borderTop.collidesWithPath(mouseArea) || borderBottom.collidesWithPath(mouseArea))
 471                     setResizeCursor(borderTop.line().angle());
 472                 else
 473                     setCursor(Qt::OpenHandCursor);
 474                 break;
 475             }
 476             if (!itemFound) setCursor(Qt::ArrowCursor);
 477         }
 478         QGraphicsScene::mouseMoveEvent(e);
 479     } else if (m_tool == TITLE_RECTANGLE && e->buttons() & Qt::LeftButton) {
 480         if (m_selectedItem == NULL && (m_clickPoint - e->screenPos()).manhattanLength() >= QApplication::startDragDistance()) {
 481             // create new rect item
 482             m_selectedItem = addRect(0, 0, e->scenePos().x() - m_sceneClickPoint.x(), e->scenePos().y() - m_sceneClickPoint.y());
 483             emit newRect((QGraphicsRectItem *) m_selectedItem);
 484             m_selectedItem->setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
 485             m_selectedItem->setPos(m_sceneClickPoint);
 486             m_resizeMode = BottomRight;
 487             QGraphicsScene::mouseMoveEvent(e);
 488         }
 489     }
 490 }
 491
 492 void GraphicsSceneRectMove::wheelEvent(QGraphicsSceneWheelEvent * wheelEvent)
 493 {
 494     QList<QGraphicsView*> viewlist = views();
 495     //kDebug() << wheelEvent->delta() << " " << zoom;
 496     if (viewlist.size() > 0) {
 497         if (wheelEvent->delta() < 0) emit sceneZoom(true);
 498         else emit sceneZoom(false);
 499     }
 500 }
 501
 502 void GraphicsSceneRectMove::setScale(double s)
 503 {
 504     if (m_zoom < 1.0 / 7.0 && s < 1.0) return;
 505     else if (m_zoom > 10.0 / 7.9 && s > 1.0) return;
 506     QList<QGraphicsView*> viewlist = views();
 507     if (viewlist.size() > 0) {
 508         viewlist[0]->scale(s, s);
 509         m_zoom = m_zoom * s;
 510     }
 511     //kDebug()<<"//////////  ZOOM: "<<zoom;
 512 }
 513
 514 void GraphicsSceneRectMove::setZoom(double s)
 515 {
 516     QList<QGraphicsView*> viewlist = views();
 517     if (viewlist.size() > 0) {
 518         viewlist[0]->resetTransform();
 519         viewlist[0]->scale(s, s);
 520         m_zoom = s;
 521     }
 522
 523     //kDebug()<<"//////////  ZOOM: "<<zoom;
 524 }
 525
 526 void GraphicsSceneRectMove::setCursor(QCursor c)
 527 {
 528     const QList<QGraphicsView*> l = views();
 529     foreach(QGraphicsView* v, l) {
 530         v->setCursor(c);
 531     }
 532 }
 533
 534 void GraphicsSceneRectMove::setResizeCursor(qreal angle)
 535 {
 536     // % is not working...
 537     while (angle < 0)
 538         angle += 180;
 539     while (angle >= 180)
 540         angle -= 180;
 541     if (angle > 157.5 || angle <= 22.5)
 542         setCursor(Qt::SizeVerCursor);
 543     else if (angle > 22.5 && angle <= 67.5)
 544         setCursor(Qt::SizeFDiagCursor);
 545     else if (angle > 67.5 && angle <= 112.5)
 546         setCursor(Qt::SizeHorCursor);
 547     else if (angle > 112.5 && angle <= 157.5)
 548         setCursor(Qt::SizeBDiagCursor);
 549 }