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
 158     if (m_tool == TITLE_SELECT) {
 159         foreach(QGraphicsItem *g, list) {
 160             kDebug() << " - - CHECKING ITEM Z:" << g->zValue() << ", TYPE: " << g->type();
 161             // check is there is a selected item in list
 162             if (g->zValue() > -1000 && g->isSelected()) {
 163                 item = g;
 164                 break;
 165             }
 166         }
 167         if (item == NULL  || !(item->flags() & QGraphicsItem::ItemIsSelectable)) {
 168             if (m_selectedItem && m_selectedItem->type() == 8) {
 169                 // disable text editing
 170                 QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(m_selectedItem);
 171                 t->textCursor().setPosition(0);
 172                 QTextBlock cur = t->textCursor().block();
 173                 t->setTextCursor(QTextCursor(cur));
 174                 t->setTextInteractionFlags(Qt::NoTextInteraction);
 175             }
 176             m_selectedItem = NULL;
 177             foreach(QGraphicsItem* g, list) {
 178                 if (g->zValue() > -1000) {
 179                     item = g;
 180                     break;
 181                 }
 182             }
 183         }
 184         if (item != NULL && item->flags() & QGraphicsItem::ItemIsMovable) {
 185             m_sceneClickPoint = e->scenePos();
 186             m_selectedItem = item;
 187             kDebug() << "/////////  ITEM TYPE: " << item->type();
 188             if (item->type() == 8) {
 189                 QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(item);
 190                 if (t->textInteractionFlags() == Qt::TextEditorInteraction) {
 191                     QGraphicsScene::mousePressEvent(e);
 192                     return;
 193                 }
 194                 t->setTextInteractionFlags(Qt::NoTextInteraction);
 195                 setCursor(Qt::ClosedHandCursor);
 196             } else if (item->type() == 3 || item->type() == 13 || item->type() == 7) {
 197                 QRectF r1;
 198                 if (m_selectedItem->type() == 3)
 199                     r1 = ((QGraphicsRectItem*)m_selectedItem)->rect().normalized();
 200                 else
 201                     r1 = m_selectedItem->boundingRect().normalized();
 202
 203                 QList<QGraphicsView*> viewlist = views();
 204                 QGraphicsView *view = NULL;
 205                 if (viewlist.size() > 0) view = viewlist[0];
 206                 if (view == NULL) return;
 207                 // Item mapped coordinates
 208                 QPolygon r = m_selectedItem->deviceTransform(view->viewportTransform()).map(r1).toPolygon();
 209                 QPainterPath top(r.point(0));
 210                 top.lineTo(r.point(1));
 211                 QPainterPath bottom(r.point(2));
 212                 bottom.lineTo(r.point(3));
 213                 QPainterPath left(r.point(0));
 214                 left.lineTo(r.point(3));
 215                 QPainterPath right(r.point(1));
 216                 right.lineTo(r.point(2));
 217
 218
 219                 // The area interested by the mouse pointer
 220                 QPoint viewPos = view->mapFromScene(e->scenePos());
 221                 QPainterPath mouseArea;
 222                 mouseArea.addRect(viewPos.x() - 4, viewPos.y() - 4, 8, 8);
 223
 224                 // Check for collisions between the mouse and the borders
 225                 if (mouseArea.contains(r.point(0))) m_resizeMode = TopLeft;
 226                 else if (mouseArea.contains(r.point(2))) m_resizeMode = BottomRight;
 227                 else if (mouseArea.contains(r.point(1))) m_resizeMode = TopRight;
 228                 else if (mouseArea.contains(r.point(3))) m_resizeMode = BottomLeft;
 229                 else if (top.intersects(mouseArea)) m_resizeMode = Up;
 230                 else if (bottom.intersects(mouseArea)) m_resizeMode = Down;
 231                 else if (right.intersects(mouseArea)) m_resizeMode = Right;
 232                 else if (left.intersects(mouseArea)) m_resizeMode = Left;
 233
 234                 else
 235                     setCursor(Qt::ClosedHandCursor);
 236             }
 237         }
 238         QGraphicsScene::mousePressEvent(e);
 239     } else if (m_tool == TITLE_RECTANGLE) {
 240         m_sceneClickPoint = e->scenePos();
 241         m_selectedItem = NULL;
 242     } else if (m_tool == TITLE_TEXT) {
 243         m_selectedItem = addText(QString());
 244         emit newText((QGraphicsTextItem *) m_selectedItem);
 245         m_selectedItem->setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
 246         ((QGraphicsTextItem *)m_selectedItem)->setTextInteractionFlags(Qt::TextEditorInteraction);
 247         m_selectedItem->setPos(e->scenePos() - QPointF(0, (int)(m_fontSize / 2)));
 248         QGraphicsScene::mousePressEvent(e);
 249     }
 250
 251     kDebug() << "//////  MOUSE CLICK, RESIZE MODE: " << m_resizeMode;
 252
 253 }
 254
 255 void GraphicsSceneRectMove::clearTextSelection()
 256 {
 257     if (m_selectedItem && m_selectedItem->type() == 8) {
 258         // disable text editing
 259         QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(m_selectedItem);
 260         t->textCursor().setPosition(0);
 261         QTextBlock cur = t->textCursor().block();
 262         t->setTextCursor(QTextCursor(cur));
 263         t->setTextInteractionFlags(Qt::NoTextInteraction);
 264     }
 265     m_selectedItem = NULL;
 266     clearSelection();
 267 }
 268
 269 void GraphicsSceneRectMove::mouseMoveEvent(QGraphicsSceneMouseEvent* e)
 270 {
 271     if (e->buttons() != Qt::NoButton && (e->screenPos() - m_clickPoint).manhattanLength() < QApplication::startDragDistance()) {
 272         e->accept();
 273         return;
 274     }
 275     if (m_selectedItem && e->buttons() & Qt::LeftButton) {
 276         if (m_selectedItem->type() == 3 || m_selectedItem->type() == 13 || m_selectedItem->type() == 7) {
 277             QRectF newrect;
 278             if (m_selectedItem->type() == 3)
 279                 newrect = ((QGraphicsRectItem*)m_selectedItem)->rect();
 280             else
 281                 newrect = m_selectedItem->boundingRect();
 282             QPointF newpoint = e->scenePos();
 283             /*
 284              * The vertices of the rectangle (check for matrix
 285              * transformation); to be replaced by QTransform::map()?
 286              */
 287             QPointF itemOrigin = m_selectedItem->scenePos();
 288             QTransform transform = m_selectedItem->transform();
 289             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());
 290             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());
 291             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());
 292             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());
 293             // Convert the mouse coordinates applying inverted transformation
 294             QPointF newPointRelative = newpoint - itemOrigin;
 295             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());
 296             /*
 297              * Will check if the mouse is on the right of the limit lines with a
 298              * determinant (it must be less than zero because the Y axis is
 299              * inverted)
 300              */
 301             int determinantH, determinantV;
 302             // Check whether to resize or to just move the item(s)
 303             switch (m_resizeMode) {
 304             case TopLeft:
 305                 determinantV = (bottomRight.x() - newpoint.x()) * (topRight.y() - newpoint.y()) - (bottomRight.y() - newpoint.y()) * (topRight.x() - newpoint.x());
 306                 determinantH = (bottomLeft.x() - newpoint.x()) * (bottomRight.y() - newpoint.y()) - (bottomLeft.y() - newpoint.y()) * (bottomRight.x() - newpoint.x());
 307                 if (determinantV < 0) {
 308                     if (determinantH < 0) {
 309                         // resizePoint is not working for some reason
 310                         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())));
 311                         m_selectedItem->setPos(resizePoint + itemOrigin);
 312                     } else
 313                         m_resizeMode = BottomLeft;
 314                 } else {
 315                     if (determinantH < 0)
 316                         m_resizeMode = TopRight;
 317                     else
 318                         m_resizeMode = BottomRight;
 319                 }
 320                 break;
 321             case BottomLeft:
 322                 determinantV = (bottomRight.x() - newpoint.x()) * (topRight.y() - newpoint.y()) - (bottomRight.y() - newpoint.y()) * (topRight.x() - newpoint.x());
 323                 determinantH = (topRight.x() - newpoint.x()) * (topLeft.y() - newpoint.y()) - (topRight.y() - newpoint.y()) * (topLeft.x() - newpoint.x());
 324                 if (determinantV < 0) {
 325                     if (determinantH < 0) {
 326                         newrect.setBottomRight(QPointF(newrect.width() - resizePoint.x(), resizePoint.y()));
 327                         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()));
 328                     } else
 329                         m_resizeMode = TopLeft;
 330                 } else {
 331                     if (determinantH < 0)
 332                         m_resizeMode = BottomRight;
 333                     else
 334                         m_resizeMode = TopRight;
 335                 }
 336                 break;
 337             case TopRight:
 338                 determinantV = (topLeft.x() - newpoint.x()) * (bottomLeft.y() - newpoint.y()) - (topLeft.y() - newpoint.y()) * (bottomLeft.x() - newpoint.x());
 339                 determinantH = (bottomLeft.x() - newpoint.x()) * (bottomRight.y() - newpoint.y()) - (bottomLeft.y() - newpoint.y()) * (bottomRight.x() - newpoint.x());
 340                 if (determinantV < 0) {
 341                     if (determinantH < 0) {
 342                         newrect.setBottomRight(QPointF(resizePoint.x(), newrect.bottom() - resizePoint.y()));
 343                         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()));
 344                     } else
 345                         m_resizeMode = BottomRight;
 346                 } else {
 347                     if (determinantH < 0)
 348                         m_resizeMode = TopLeft;
 349                     else
 350                         m_resizeMode = BottomLeft;
 351                 }
 352                 break;
 353             case BottomRight:
 354                 determinantV = (topLeft.x() - newpoint.x()) * (bottomLeft.y() - newpoint.y()) - (topLeft.y() - newpoint.y()) * (bottomLeft.x() - newpoint.x());
 355                 determinantH = (topRight.x() - newpoint.x()) * (topLeft.y() - newpoint.y()) - (topRight.y() - newpoint.y()) * (topLeft.x() - newpoint.x());
 356                 if (determinantV < 0) {
 357                     if (determinantH < 0)
 358                         newrect.setBottomRight(resizePoint);
 359                     else
 360                         m_resizeMode = TopRight;
 361                 } else {
 362                     if (determinantH < 0)
 363                         m_resizeMode = BottomLeft;
 364                     else
 365                         m_resizeMode = TopLeft;
 366                 }
 367                 break;
 368             case Left:
 369                 determinantV = (bottomRight.x() - newpoint.x()) * (topRight.y() - newpoint.y()) - (bottomRight.y() - newpoint.y()) * (topRight.x() - newpoint.x());
 370                 if (determinantV < 0) {
 371                     newrect.setRight(newrect.width() - resizePoint.x());
 372                     m_selectedItem->setPos(QPointF(transform.m11() * resizePoint.x() + transform.m31() + itemOrigin.x(), transform.m12() * resizePoint.x() + transform.m32() + itemOrigin.y()));
 373                 } else
 374                     m_resizeMode = Right;
 375                 break;
 376             case Right:
 377                 determinantV = (topLeft.x() - newpoint.x()) * (bottomLeft.y() - newpoint.y()) - (topLeft.y() - newpoint.y()) * (bottomLeft.x() - newpoint.x());
 378                 if (determinantV < 0)
 379                     newrect.setRight(resizePoint.x());
 380                 else
 381                     m_resizeMode = Left;
 382                 break;
 383             case Up:
 384                 determinantH = (bottomLeft.x() - newpoint.x()) * (bottomRight.y() - newpoint.y()) - (bottomLeft.y() - newpoint.y()) * (bottomRight.x() - newpoint.x());
 385                 if (determinantH < 0) {
 386                     newrect.setBottom(newrect.bottom() - resizePoint.y());
 387                     m_selectedItem->setPos(QPointF(transform.m21() * resizePoint.y() + transform.m31() + itemOrigin.x(), transform.m22() * resizePoint.y() + transform.m32() + itemOrigin.y()));
 388                 } else
 389                     m_resizeMode = Down;
 390                 break;
 391             case Down:
 392                 determinantH = (topRight.x() - newpoint.x()) * (topLeft.y() - newpoint.y()) - (topRight.y() - newpoint.y()) * (topLeft.x() - newpoint.x());
 393                 if (determinantH < 0)
 394                     newrect.setBottom(resizePoint.y());
 395                 else
 396                     m_resizeMode = Up;
 397                 break;
 398             default:
 399                 QPointF diff = e->scenePos() - m_sceneClickPoint;
 400                 m_sceneClickPoint = e->scenePos();
 401                 m_selectedItem->moveBy(diff.x(), diff.y());
 402                 break;
 403             }
 404             if (m_selectedItem->type() == 3 && m_resizeMode != NoResize) {
 405                 QGraphicsRectItem *gi = (QGraphicsRectItem*)m_selectedItem;
 406                 // Resize using aspect ratio
 407                 if (!m_selectedItem->data(0).isNull()) {
 408                     // we want to keep aspect ratio
 409                     double hRatio = (double) newrect.width() / m_selectedItem->data(0).toInt();
 410                     double vRatio = (double) newrect.height() / m_selectedItem->data(1).toInt();
 411                     if (hRatio < vRatio) newrect.setHeight(m_selectedItem->data(1).toInt() * hRatio);
 412                     else newrect.setWidth(m_selectedItem->data(0).toInt() * vRatio);
 413                 }
 414
 415                 gi->setRect(newrect);
 416             }
 417             /*else {
 418             qreal s;
 419             if (resizeMode == Left || resizeMode == Right ) s = m_selectedItem->boundingRect().width() / newrect.width();
 420             else s = m_selectedItem->boundingRect().height() / newrect.height();
 421             m_selectedItem->scale( 1 / s, 1 / s );
 422             kDebug()<<"/// SCALING SVG, RESIZE MODE: "<<resizeMode<<", RECT:"<<m_selectedItem->boundingRect();
 423             }*/
 424             //gi->setPos(m_selectedItem->scenePos());
 425             /*if (resizeMode == NoResize) {
 426                 QGraphicsScene::mouseMoveEvent(e);
 427                 return;
 428             }*/
 429         } else if (m_selectedItem->type() == 8) {
 430             QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(m_selectedItem);
 431             if (t->textInteractionFlags() & Qt::TextEditorInteraction) {
 432                 QGraphicsScene::mouseMoveEvent(e);
 433                 return;
 434             }
 435             QPointF diff = e->scenePos() - m_sceneClickPoint;
 436             m_sceneClickPoint = e->scenePos();
 437             m_selectedItem->moveBy(diff.x(), diff.y());
 438         }
 439         emit itemMoved();
 440     } else if (m_tool == TITLE_SELECT) {
 441         QList<QGraphicsView*> viewlist = views();
 442         QGraphicsView *view = NULL;
 443         if (viewlist.size() > 0) view = viewlist[0];
 444
 445         QPointF p = e->scenePos();
 446         p += QPoint(-2, -2);
 447         m_resizeMode = NoResize;
 448         bool itemFound = false;
 449         QList<QGraphicsItem *> list = items(QRectF(p , QSizeF(4, 4)).toRect());
 450         foreach(const QGraphicsItem* g, list) {
 451             if ((g->type() == 13 || g->type() == 7) && g->zValue() > -1000) {
 452                 // image or svg item
 453                 setCursor(Qt::OpenHandCursor);
 454                 break;
 455             } else if (g->type() == 3 && g->zValue() > -1000) {
 456                 if (view == NULL) continue;
 457                 QRectF r1 = ((const QGraphicsRectItem*)g)->rect().normalized();
 458                 itemFound = true;
 459
 460                 // Item mapped coordinates
 461                 QPolygon r = g->deviceTransform(view->viewportTransform()).map(r1).toPolygon();
 462                 QPainterPath top(r.point(0));
 463                 top.lineTo(r.point(1));
 464                 QPainterPath bottom(r.point(2));
 465                 bottom.lineTo(r.point(3));
 466                 QPainterPath left(r.point(0));
 467                 left.lineTo(r.point(3));
 468                 QPainterPath right(r.point(1));
 469                 right.lineTo(r.point(2));
 470
 471                 // The area interested by the mouse pointer
 472                 QPoint viewPos = view->mapFromScene(e->scenePos());
 473                 QPainterPath mouseArea;
 474                 mouseArea.addRect(viewPos.x() - 4, viewPos.y() - 4, 8, 8);
 475
 476                 // Check for collisions between the mouse and the borders
 477                 if (mouseArea.contains(r.point(0)) || mouseArea.contains(r.point(2))) setCursor(Qt::SizeFDiagCursor);
 478                 else if (mouseArea.contains(r.point(1)) || mouseArea.contains(r.point(3))) setCursor(Qt::SizeBDiagCursor);
 479                 else if (top.intersects(mouseArea) || bottom.intersects(mouseArea)) setCursor(Qt::SizeVerCursor);
 480                 else if (right.intersects(mouseArea) || left.intersects(mouseArea)) setCursor(Qt::SizeHorCursor);
 481                 else
 482                     setCursor(Qt::OpenHandCursor);
 483                 break;
 484             }
 485             if (!itemFound) setCursor(Qt::ArrowCursor);
 486         }
 487         QGraphicsScene::mouseMoveEvent(e);
 488     } else if (m_tool == TITLE_RECTANGLE && e->buttons() & Qt::LeftButton) {
 489         if (m_selectedItem == NULL) {
 490             // create new rect item
 491             QRectF r(0, 0, e->scenePos().x() - m_sceneClickPoint.x(), e->scenePos().y() - m_sceneClickPoint.y());
 492             r = r.normalized();
 493             m_selectedItem = addRect(QRectF(0, 0, r.width(), r.height()));
 494             emit newRect((QGraphicsRectItem *) m_selectedItem);
 495             m_selectedItem->setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
 496             m_selectedItem->setPos(m_sceneClickPoint);
 497             m_resizeMode = BottomRight;
 498             QGraphicsScene::mouseMoveEvent(e);
 499         }
 500     }
 501 }
 502
 503 void GraphicsSceneRectMove::wheelEvent(QGraphicsSceneWheelEvent * wheelEvent)
 504 {
 505     if (wheelEvent->modifiers() == Qt::ControlModifier) {
 506         QList<QGraphicsView*> viewlist = views();
 507         //kDebug() << wheelEvent->delta() << " " << zoom;
 508         if (viewlist.size() > 0) {
 509             if (wheelEvent->delta() > 0) emit sceneZoom(true);
 510             else emit sceneZoom(false);
 511         }
 512     } else wheelEvent->setAccepted(false);
 513 }
 514
 515 void GraphicsSceneRectMove::setScale(double s)
 516 {
 517     if (m_zoom < 1.0 / 7.0 && s < 1.0) return;
 518     else if (m_zoom > 10.0 / 7.9 && s > 1.0) return;
 519     QList<QGraphicsView*> viewlist = views();
 520     if (viewlist.size() > 0) {
 521         viewlist[0]->scale(s, s);
 522         m_zoom = m_zoom * s;
 523     }
 524     //kDebug()<<"//////////  ZOOM: "<<zoom;
 525 }
 526
 527 void GraphicsSceneRectMove::setZoom(double s)
 528 {
 529     QList<QGraphicsView*> viewlist = views();
 530     if (viewlist.size() > 0) {
 531         viewlist[0]->resetTransform();
 532         viewlist[0]->scale(s, s);
 533         m_zoom = s;
 534     }
 535
 536     //kDebug()<<"//////////  ZOOM: "<<zoom;
 537 }
 538
 539 void GraphicsSceneRectMove::setCursor(QCursor c)
 540 {
 541     const QList<QGraphicsView*> l = views();
 542     foreach(QGraphicsView* v, l) {
 543         v->setCursor(c);
 544     }
 545 }
 546
 547 void GraphicsSceneRectMove::setResizeCursor(qreal angle)
 548 {
 549     // % is not working...
 550     while (angle < 0)
 551         angle += 180;
 552     while (angle >= 180)
 553         angle -= 180;
 554     if (angle > 157.5 || angle <= 22.5)
 555         setCursor(Qt::SizeVerCursor);
 556     else if (angle > 22.5 && angle <= 67.5)
 557         setCursor(Qt::SizeFDiagCursor);
 558     else if (angle > 67.5 && angle <= 112.5)
 559         setCursor(Qt::SizeHorCursor);
 560     else if (angle > 112.5 && angle <= 157.5)
 561         setCursor(Qt::SizeBDiagCursor);
 562 }
 563
 564 void GraphicsSceneRectMove::slotUpdateFontSize(int s)
 565 {
 566     m_fontSize = s;
 567 }
 568
 569 #include "graphicsscenerectmove.moc"