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     m_fontSize = 0;
  46 }
  47
  48 void GraphicsSceneRectMove::setSelectedItem(QGraphicsItem *item)
  49 {
  50     clearSelection();
  51     m_selectedItem = item;
  52     item->setSelected(true);
  53     update();
  54 }
  55
  56 TITLETOOL GraphicsSceneRectMove::tool()
  57 {
  58     return m_tool;
  59 }
  60
  61 void GraphicsSceneRectMove::setTool(TITLETOOL tool)
  62 {
  63     m_tool = tool;
  64     switch (m_tool) {
  65     case TITLE_RECTANGLE:
  66         setCursor(Qt::CrossCursor);
  67         break;
  68     case TITLE_TEXT:
  69         setCursor(Qt::IBeamCursor);
  70         break;
  71     default:
  72         setCursor(Qt::ArrowCursor);
  73     }
  74 }
  75
  76 void GraphicsSceneRectMove::keyPressEvent(QKeyEvent * keyEvent)
  77 {
  78     if (m_selectedItem == NULL || !(m_selectedItem->flags() & QGraphicsItem::ItemIsMovable)) {
  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 void GraphicsSceneRectMove::mouseDoubleClickEvent(QGraphicsSceneMouseEvent* e)
 121 {
 122     QPointF p = e->scenePos();
 123     p += QPoint(-2, -2);
 124     m_resizeMode = NoResize;
 125     m_selectedItem = NULL;
 126
 127     // http://www.kdenlive.org/mantis/view.php?id=1035
 128     QList<QGraphicsItem*> i = items(QRectF(p , QSizeF(4, 4)).toRect());
 129     if (i.size() <= 0) return;
 130
 131     QGraphicsItem* g = i.at(0);
 132     if (g) {
 133         if (g->type() == 8) {
 134             QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(g);
 135             m_selectedItem = g;
 136             t->setTextInteractionFlags(Qt::TextEditorInteraction);
 137         } else emit doubleClickEvent();
 138     }
 139     QGraphicsScene::mouseDoubleClickEvent(e);
 140 }
 141
 142 void GraphicsSceneRectMove::mouseReleaseEvent(QGraphicsSceneMouseEvent *e)
 143 {
 144     if (m_tool == TITLE_RECTANGLE && m_selectedItem) setSelectedItem(m_selectedItem);
 145     QGraphicsScene::mouseReleaseEvent(e);
 146     emit actionFinished();
 147 }
 148
 149 void GraphicsSceneRectMove::mousePressEvent(QGraphicsSceneMouseEvent* e)
 150 {
 151     m_clickPoint = e->screenPos();
 152     QPointF p = e->scenePos();
 153     p += QPoint(-2, -2);
 154     m_resizeMode = NoResize;
 155     const QList <QGraphicsItem *> list = items(QRectF(p , QSizeF(4, 4)).toRect());
 156     QGraphicsItem *item = NULL;
 157     bool hasSelected = false;
 158
 159     if (m_tool == TITLE_SELECT) {
 160         foreach(QGraphicsItem *g, list) {
 161             kDebug() << " - - CHECKING ITEM Z:" << g->zValue() << ", TYPE: " << g->type();
 162             // check is there is a selected item in list
 163             if (g->zValue() > -1000 && g->isSelected()) {
 164                 hasSelected = true;
 165                 item = g;
 166                 break;
 167             }
 168         }
 169         if (item == NULL  || !(item->flags() & QGraphicsItem::ItemIsSelectable)) {
 170             if (m_selectedItem && m_selectedItem->type() == 8) {
 171                 // disable text editing
 172                 QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(m_selectedItem);
 173                 t->textCursor().setPosition(0);
 174                 QTextBlock cur = t->textCursor().block();
 175                 t->setTextCursor(QTextCursor(cur));
 176                 t->setTextInteractionFlags(Qt::NoTextInteraction);
 177             }
 178             m_selectedItem = NULL;
 179             foreach(QGraphicsItem* g, list) {
 180                 if (g->zValue() > -1000) {
 181                     item = g;
 182                     break;
 183                 }
 184             }
 185         }
 186         if (item != NULL && item->flags() & QGraphicsItem::ItemIsMovable) {
 187             m_sceneClickPoint = e->scenePos();
 188             m_selectedItem = item;
 189             kDebug() << "/////////  ITEM TYPE: " << item->type();
 190             if (item->type() == 8) {
 191                 QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(item);
 192                 if (t->textInteractionFlags() == Qt::TextEditorInteraction) {
 193                     QGraphicsScene::mousePressEvent(e);
 194                     return;
 195                 }
 196                 t->setTextInteractionFlags(Qt::NoTextInteraction);
 197                 setCursor(Qt::ClosedHandCursor);
 198             } else if (item->type() == 3 || item->type() == 13 || item->type() == 7) {
 199                 QRectF r1;
 200                 if (m_selectedItem->type() == 3)
 201                     r1 = ((QGraphicsRectItem*)m_selectedItem)->rect().normalized();
 202                 else
 203                     r1 = m_selectedItem->boundingRect().normalized();
 204
 205                 QList<QGraphicsView*> viewlist = views();
 206                 QGraphicsView *view = NULL;
 207                 if (viewlist.size() > 0) view = viewlist[0];
 208                 if (view == NULL) return;
 209                 // Item mapped coordinates
 210                 QPolygon r = m_selectedItem->deviceTransform(view->viewportTransform()).map(r1).toPolygon();
 211                 QPainterPath top(r.point(0));
 212                 top.lineTo(r.point(1));
 213                 QPainterPath bottom(r.point(2));
 214                 bottom.lineTo(r.point(3));
 215                 QPainterPath left(r.point(0));
 216                 left.lineTo(r.point(3));
 217                 QPainterPath right(r.point(1));
 218                 right.lineTo(r.point(2));
 219
 220
 221                 // The area interested by the mouse pointer
 222                 QPoint viewPos = view->mapFromScene(e->scenePos());
 223                 QPainterPath mouseArea;
 224                 mouseArea.addRect(viewPos.x() - 4, viewPos.y() - 4, 8, 8);
 225
 226                 // Check for collisions between the mouse and the borders
 227                 if (mouseArea.contains(r.point(0))) m_resizeMode = TopLeft;
 228                 else if (mouseArea.contains(r.point(2))) m_resizeMode = BottomRight;
 229                 else if (mouseArea.contains(r.point(1))) m_resizeMode = TopRight;
 230                 else if (mouseArea.contains(r.point(3))) m_resizeMode = BottomLeft;
 231                 else if (top.intersects(mouseArea)) m_resizeMode = Up;
 232                 else if (bottom.intersects(mouseArea)) m_resizeMode = Down;
 233                 else if (right.intersects(mouseArea)) m_resizeMode = Right;
 234                 else if (left.intersects(mouseArea)) m_resizeMode = Left;
 235
 236                 else
 237                     setCursor(Qt::ClosedHandCursor);
 238             }
 239         }
 240         QGraphicsScene::mousePressEvent(e);
 241     } else if (m_tool == TITLE_RECTANGLE) {
 242         m_sceneClickPoint = e->scenePos();
 243         m_selectedItem = NULL;
 244     } else if (m_tool == TITLE_TEXT) {
 245         m_selectedItem = addText(QString());
 246         emit newText((QGraphicsTextItem *) m_selectedItem);
 247         m_selectedItem->setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
 248         ((QGraphicsTextItem *)m_selectedItem)->setTextInteractionFlags(Qt::TextEditorInteraction);
 249         m_selectedItem->setPos(e->scenePos() - QPointF(0, (int)(m_fontSize / 2)));
 250         QGraphicsScene::mousePressEvent(e);
 251     }
 252
 253     kDebug() << "//////  MOUSE CLICK, RESIZE MODE: " << m_resizeMode;
 254
 255 }
 256
 257 void GraphicsSceneRectMove::clearTextSelection()
 258 {
 259     if (m_selectedItem && m_selectedItem->type() == 8) {
 260         // disable text editing
 261         QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(m_selectedItem);
 262         t->textCursor().setPosition(0);
 263         QTextBlock cur = t->textCursor().block();
 264         t->setTextCursor(QTextCursor(cur));
 265         t->setTextInteractionFlags(Qt::NoTextInteraction);
 266     }
 267     m_selectedItem = NULL;
 268     clearSelection();
 269 }
 270
 271 void GraphicsSceneRectMove::mouseMoveEvent(QGraphicsSceneMouseEvent* e)
 272 {
 273     if (e->buttons() != Qt::NoButton && (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                 // Resize using aspect ratio
 408                 if (!m_selectedItem->data(0).isNull()) {
 409                     // we want to keep aspect ratio
 410                     double hRatio = (double) newrect.width() / m_selectedItem->data(0).toInt();
 411                     double vRatio = (double) newrect.height() / m_selectedItem->data(1).toInt();
 412                     if (hRatio < vRatio) newrect.setHeight(m_selectedItem->data(1).toInt() * hRatio);
 413                     else newrect.setWidth(m_selectedItem->data(0).toInt() * vRatio);
 414                 }
 415
 416                 gi->setRect(newrect);
 417             }
 418             /*else {
 419             qreal s;
 420             if (resizeMode == Left || resizeMode == Right ) s = m_selectedItem->boundingRect().width() / newrect.width();
 421             else s = m_selectedItem->boundingRect().height() / newrect.height();
 422             m_selectedItem->scale( 1 / s, 1 / s );
 423             kDebug()<<"/// SCALING SVG, RESIZE MODE: "<<resizeMode<<", RECT:"<<m_selectedItem->boundingRect();
 424             }*/
 425             //gi->setPos(m_selectedItem->scenePos());
 426             /*if (resizeMode == NoResize) {
 427                 QGraphicsScene::mouseMoveEvent(e);
 428                 return;
 429             }*/
 430         } else if (m_selectedItem->type() == 8) {
 431             QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(m_selectedItem);
 432             if (t->textInteractionFlags() & Qt::TextEditorInteraction) {
 433                 QGraphicsScene::mouseMoveEvent(e);
 434                 return;
 435             }
 436             QPointF diff = e->scenePos() - m_sceneClickPoint;
 437             m_sceneClickPoint = e->scenePos();
 438             m_selectedItem->moveBy(diff.x(), diff.y());
 439         }
 440         emit itemMoved();
 441     } else if (m_tool == TITLE_SELECT) {
 442         QList<QGraphicsView*> viewlist = views();
 443         QGraphicsView *view = NULL;
 444         if (viewlist.size() > 0) view = viewlist[0];
 445
 446         QPointF p = e->scenePos();
 447         p += QPoint(-2, -2);
 448         m_resizeMode = NoResize;
 449         bool itemFound = false;
 450         QList<QGraphicsItem *> list = items(QRectF(p , QSizeF(4, 4)).toRect());
 451         foreach(const QGraphicsItem* g, list) {
 452             if ((g->type() == 13 || g->type() == 7) && g->zValue() > -1000) {
 453                 // image or svg item
 454                 setCursor(Qt::OpenHandCursor);
 455                 break;
 456             } else if (g->type() == 3 && g->zValue() > -1000) {
 457                 if (view == NULL) continue;
 458                 QRectF r1 = ((const QGraphicsRectItem*)g)->rect().normalized();
 459                 itemFound = true;
 460
 461                 // Item mapped coordinates
 462                 QPolygon r = g->deviceTransform(view->viewportTransform()).map(r1).toPolygon();
 463                 QPainterPath top(r.point(0));
 464                 top.lineTo(r.point(1));
 465                 QPainterPath bottom(r.point(2));
 466                 bottom.lineTo(r.point(3));
 467                 QPainterPath left(r.point(0));
 468                 left.lineTo(r.point(3));
 469                 QPainterPath right(r.point(1));
 470                 right.lineTo(r.point(2));
 471
 472                 // The area interested by the mouse pointer
 473                 QPoint viewPos = view->mapFromScene(e->scenePos());
 474                 QPainterPath mouseArea;
 475                 mouseArea.addRect(viewPos.x() - 4, viewPos.y() - 4, 8, 8);
 476
 477                 // Check for collisions between the mouse and the borders
 478                 if (mouseArea.contains(r.point(0)) || mouseArea.contains(r.point(2))) setCursor(Qt::SizeFDiagCursor);
 479                 else if (mouseArea.contains(r.point(1)) || mouseArea.contains(r.point(3))) setCursor(Qt::SizeBDiagCursor);
 480                 else if (top.intersects(mouseArea) || bottom.intersects(mouseArea)) setCursor(Qt::SizeVerCursor);
 481                 else if (right.intersects(mouseArea) || left.intersects(mouseArea)) setCursor(Qt::SizeHorCursor);
 482                 else
 483                     setCursor(Qt::OpenHandCursor);
 484                 break;
 485             }
 486             if (!itemFound) setCursor(Qt::ArrowCursor);
 487         }
 488         QGraphicsScene::mouseMoveEvent(e);
 489     } else if (m_tool == TITLE_RECTANGLE && e->buttons() & Qt::LeftButton) {
 490         if (m_selectedItem == NULL) {
 491             // create new rect item
 492             QRectF r(0, 0, e->scenePos().x() - m_sceneClickPoint.x(), e->scenePos().y() - m_sceneClickPoint.y());
 493             r = r.normalized();
 494             m_selectedItem = addRect(QRectF(0, 0, r.width(), r.height()));
 495             emit newRect((QGraphicsRectItem *) m_selectedItem);
 496             m_selectedItem->setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
 497             m_selectedItem->setPos(m_sceneClickPoint);
 498             m_resizeMode = BottomRight;
 499             QGraphicsScene::mouseMoveEvent(e);
 500         }
 501     }
 502 }
 503
 504 void GraphicsSceneRectMove::wheelEvent(QGraphicsSceneWheelEvent * wheelEvent)
 505 {
 506     if (wheelEvent->modifiers() == Qt::ControlModifier) {
 507         QList<QGraphicsView*> viewlist = views();
 508         //kDebug() << wheelEvent->delta() << " " << zoom;
 509         if (viewlist.size() > 0) {
 510             if (wheelEvent->delta() > 0) emit sceneZoom(true);
 511             else emit sceneZoom(false);
 512         }
 513     } else wheelEvent->setAccepted(false);
 514 }
 515
 516 void GraphicsSceneRectMove::setScale(double s)
 517 {
 518     if (m_zoom < 1.0 / 7.0 && s < 1.0) return;
 519     else if (m_zoom > 10.0 / 7.9 && s > 1.0) return;
 520     QList<QGraphicsView*> viewlist = views();
 521     if (viewlist.size() > 0) {
 522         viewlist[0]->scale(s, s);
 523         m_zoom = m_zoom * s;
 524     }
 525     //kDebug()<<"//////////  ZOOM: "<<zoom;
 526 }
 527
 528 void GraphicsSceneRectMove::setZoom(double s)
 529 {
 530     QList<QGraphicsView*> viewlist = views();
 531     if (viewlist.size() > 0) {
 532         viewlist[0]->resetTransform();
 533         viewlist[0]->scale(s, s);
 534         m_zoom = s;
 535     }
 536
 537     //kDebug()<<"//////////  ZOOM: "<<zoom;
 538 }
 539
 540 void GraphicsSceneRectMove::setCursor(QCursor c)
 541 {
 542     const QList<QGraphicsView*> l = views();
 543     foreach(QGraphicsView* v, l) {
 544         v->setCursor(c);
 545     }
 546 }
 547
 548 void GraphicsSceneRectMove::setResizeCursor(qreal angle)
 549 {
 550     // % is not working...
 551     while (angle < 0)
 552         angle += 180;
 553     while (angle >= 180)
 554         angle -= 180;
 555     if (angle > 157.5 || angle <= 22.5)
 556         setCursor(Qt::SizeVerCursor);
 557     else if (angle > 22.5 && angle <= 67.5)
 558         setCursor(Qt::SizeFDiagCursor);
 559     else if (angle > 67.5 && angle <= 112.5)
 560         setCursor(Qt::SizeHorCursor);
 561     else if (angle > 112.5 && angle <= 157.5)
 562         setCursor(Qt::SizeBDiagCursor);
 563 }
 564
 565 void GraphicsSceneRectMove::slotUpdateFontSize(int s)
 566 {
 567     m_fontSize = s;
 568 }
 569
 570 #include "graphicsscenerectmove.moc"