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 void GraphicsSceneRectMove::keyPressEvent(QKeyEvent * keyEvent)
  76 {
  77     if (m_selectedItem == NULL || !(m_selectedItem->flags() & QGraphicsItem::ItemIsMovable)) {
  78         QGraphicsScene::keyPressEvent(keyEvent);
  79         return;
  80     }
  81     int diff = 1;
  82     if (m_selectedItem->type() == 8) {
  83         QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(m_selectedItem);
  84         if (t->textInteractionFlags() & Qt::TextEditorInteraction) {
  85             QGraphicsScene::keyPressEvent(keyEvent);
  86             return;
  87         }
  88     }
  89     if (keyEvent->modifiers() & Qt::ControlModifier) diff = 10;
  90     switch (keyEvent->key()) {
  91     case Qt::Key_Left:
  92         m_selectedItem->setPos(m_selectedItem->pos() - QPointF(diff, 0));
  93         emit itemMoved();
  94         break;
  95     case Qt::Key_Right:
  96         m_selectedItem->setPos(m_selectedItem->pos() + QPointF(diff, 0));
  97         emit itemMoved();
  98         break;
  99     case Qt::Key_Up:
 100         m_selectedItem->setPos(m_selectedItem->pos() - QPointF(0, diff));
 101         emit itemMoved();
 102         break;
 103     case Qt::Key_Down:
 104         m_selectedItem->setPos(m_selectedItem->pos() + QPointF(0, diff));
 105         emit itemMoved();
 106         break;
 107     case Qt::Key_Delete:
 108     case Qt::Key_Backspace:
 109         delete m_selectedItem;
 110         m_selectedItem = NULL;
 111         emit selectionChanged();
 112         break;
 113     default:
 114         QGraphicsScene::keyPressEvent(keyEvent);
 115     }
 116     emit actionFinished();
 117 }
 118
 119 void GraphicsSceneRectMove::mouseDoubleClickEvent(QGraphicsSceneMouseEvent* e)
 120 {
 121     QPointF p = e->scenePos();
 122     p += QPoint(-2, -2);
 123     m_resizeMode = NoResize;
 124     m_selectedItem = NULL;
 125
 126     // http://www.kdenlive.org/mantis/view.php?id=1035
 127     QList<QGraphicsItem*> i = items(QRectF(p , QSizeF(4, 4)).toRect());
 128     if (i.size() <= 0) return;
 129
 130     QGraphicsItem* g = i.at(0);
 131     if (g) {
 132         if (g->type() == 8) {
 133             QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(g);
 134             m_selectedItem = g;
 135             t->setTextInteractionFlags(Qt::TextEditorInteraction);
 136         } else emit doubleClickEvent();
 137     }
 138     QGraphicsScene::mouseDoubleClickEvent(e);
 139 }
 140
 141 void GraphicsSceneRectMove::mouseReleaseEvent(QGraphicsSceneMouseEvent *e)
 142 {
 143     if (m_tool == TITLE_RECTANGLE && m_selectedItem) setSelectedItem(m_selectedItem);
 144     QGraphicsScene::mouseReleaseEvent(e);
 145     emit actionFinished();
 146 }
 147
 148 void GraphicsSceneRectMove::mousePressEvent(QGraphicsSceneMouseEvent* e)
 149 {
 150     m_clickPoint = e->screenPos();
 151     QPointF p = e->scenePos();
 152     p += QPoint(-2, -2);
 153     m_resizeMode = NoResize;
 154     const QList <QGraphicsItem *> list = items(QRectF(p , QSizeF(4, 4)).toRect());
 155     QGraphicsItem *item = NULL;
 156     bool hasSelected = false;
 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                 hasSelected = true;
 164                 item = g;
 165                 break;
 166             }
 167         }
 168         if (item == NULL  || !(item->flags() & QGraphicsItem::ItemIsSelectable)) {
 169             if (m_selectedItem && m_selectedItem->type() == 8) {
 170                 // disable text editing
 171                 QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(m_selectedItem);
 172                 t->textCursor().setPosition(0);
 173                 QTextBlock cur = t->textCursor().block();
 174                 t->setTextCursor(QTextCursor(cur));
 175                 t->setTextInteractionFlags(Qt::NoTextInteraction);
 176             }
 177             m_selectedItem = NULL;
 178             foreach(QGraphicsItem* g, list) {
 179                 if (g->zValue() > -1000) {
 180                     item = g;
 181                     break;
 182                 }
 183             }
 184         }
 185         if (item != NULL && item->flags() & QGraphicsItem::ItemIsMovable) {
 186             m_sceneClickPoint = e->scenePos();
 187             m_selectedItem = item;
 188             kDebug() << "/////////  ITEM TYPE: " << item->type();
 189             if (item->type() == 8) {
 190                 QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(item);
 191                 if (t->textInteractionFlags() == Qt::TextEditorInteraction) {
 192                     QGraphicsScene::mousePressEvent(e);
 193                     return;
 194                 }
 195                 t->setTextInteractionFlags(Qt::NoTextInteraction);
 196                 setCursor(Qt::ClosedHandCursor);
 197             } else if (item->type() == 3 || item->type() == 13 || item->type() == 7) {
 198                 QRectF r;
 199                 if (m_selectedItem->type() == 3)
 200                     r = ((QGraphicsRectItem*)m_selectedItem)->rect();
 201                 else
 202                     r = m_selectedItem->boundingRect();
 203                 /*
 204                  * The vertices of the rectangle (check for matrix
 205                  * transformation); to be replaced by QTransform::map()?
 206                  */
 207                 QPointF itemOrigin = item->scenePos();
 208                 QTransform transform = item->transform();
 209                 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());
 210                 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());
 211                 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());
 212                 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());
 213                 // The borders (using the transformed coordinates)
 214                 QGraphicsLineItem borderTop(topLeft.x(), topLeft.y(), topRight.x(), topRight.y());
 215                 QGraphicsLineItem borderRight(topRight.x(), topRight.y(), bottomRight.x(), bottomRight.y());
 216                 QGraphicsLineItem borderBottom(bottomRight.x(), bottomRight.y(), bottomLeft.x(), bottomLeft.y());
 217                 QGraphicsLineItem borderLeft(bottomLeft.x(), bottomLeft.y(), topLeft.x(), topLeft.y());
 218                 // The area interested by the mouse pointer
 219                 QPainterPath mouseArea;
 220                 mouseArea.addRect(e->scenePos().toPoint().x() - 4 / m_zoom, e->scenePos().toPoint().y() - 4 / m_zoom, 8 / m_zoom, 8 / m_zoom);
 221                 // Check for collisions between the mouse and the borders
 222                 if (borderLeft.collidesWithPath(mouseArea) && borderTop.collidesWithPath(mouseArea))
 223                     m_resizeMode = TopLeft;
 224                 else if (borderLeft.collidesWithPath(mouseArea) && borderBottom.collidesWithPath(mouseArea))
 225                     m_resizeMode = BottomLeft;
 226                 else if (borderRight.collidesWithPath(mouseArea) && borderTop.collidesWithPath(mouseArea))
 227                     m_resizeMode = TopRight;
 228                 else if (borderRight.collidesWithPath(mouseArea) && borderBottom.collidesWithPath(mouseArea))
 229                     m_resizeMode = BottomRight;
 230                 else if (borderLeft.collidesWithPath(mouseArea))
 231                     m_resizeMode = Left;
 232                 else if (borderRight.collidesWithPath(mouseArea))
 233                     m_resizeMode = Right;
 234                 else if (borderTop.collidesWithPath(mouseArea))
 235                     m_resizeMode = Up;
 236                 else if (borderBottom.collidesWithPath(mouseArea))
 237                     m_resizeMode = Down;
 238                 else
 239                     setCursor(Qt::ClosedHandCursor);
 240             }
 241         }
 242         QGraphicsScene::mousePressEvent(e);
 243     } else if (m_tool == TITLE_RECTANGLE) {
 244         m_sceneClickPoint = e->scenePos();
 245         m_selectedItem = NULL;
 246     } else if (m_tool == TITLE_TEXT) {
 247         m_selectedItem = addText(QString());
 248         emit newText((QGraphicsTextItem *) m_selectedItem);
 249         m_selectedItem->setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
 250         ((QGraphicsTextItem *)m_selectedItem)->setTextInteractionFlags(Qt::TextEditorInteraction);
 251         m_selectedItem->setPos(e->scenePos());
 252         QGraphicsScene::mousePressEvent(e);
 253     }
 254
 255     kDebug() << "//////  MOUSE CLICK, RESIZE MODE: " << m_resizeMode;
 256
 257 }
 258
 259 void GraphicsSceneRectMove::clearTextSelection()
 260 {
 261     if (m_selectedItem && m_selectedItem->type() == 8) {
 262         // disable text editing
 263         QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(m_selectedItem);
 264         t->textCursor().setPosition(0);
 265         QTextBlock cur = t->textCursor().block();
 266         t->setTextCursor(QTextCursor(cur));
 267         t->setTextInteractionFlags(Qt::NoTextInteraction);
 268     }
 269     m_selectedItem = NULL;
 270     clearSelection();
 271 }
 272
 273 void GraphicsSceneRectMove::mouseMoveEvent(QGraphicsSceneMouseEvent* e)
 274 {
 275     if ((e->screenPos() - m_clickPoint).manhattanLength() < QApplication::startDragDistance()) {
 276         e->accept();
 277         return;
 278     }
 279     if (m_selectedItem && e->buttons() & Qt::LeftButton) {
 280         if (m_selectedItem->type() == 3 || m_selectedItem->type() == 13 || m_selectedItem->type() == 7) {
 281             QRectF newrect;
 282             if (m_selectedItem->type() == 3)
 283                 newrect = ((QGraphicsRectItem*)m_selectedItem)->rect();
 284             else
 285                 newrect = m_selectedItem->boundingRect();
 286             QPointF newpoint = e->scenePos();
 287             /*
 288              * The vertices of the rectangle (check for matrix
 289              * transformation); to be replaced by QTransform::map()?
 290              */
 291             QPointF itemOrigin = m_selectedItem->scenePos();
 292             QTransform transform = m_selectedItem->transform();
 293             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());
 294             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());
 295             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());
 296             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());
 297             // Convert the mouse coordinates applying inverted transformation
 298             QPointF newPointRelative = newpoint - itemOrigin;
 299             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());
 300             /*
 301              * Will check if the mouse is on the right of the limit lines with a
 302              * determinant (it must be less than zero because the Y axis is
 303              * inverted)
 304              */
 305             int determinantH, determinantV;
 306             switch (m_resizeMode) {
 307             case TopLeft:
 308                 determinantV = (bottomRight.x() - newpoint.x()) * (topRight.y() - newpoint.y()) - (bottomRight.y() - newpoint.y()) * (topRight.x() - newpoint.x());
 309                 determinantH = (bottomLeft.x() - newpoint.x()) * (bottomRight.y() - newpoint.y()) - (bottomLeft.y() - newpoint.y()) * (bottomRight.x() - newpoint.x());
 310                 if (determinantV < 0) {
 311                     if (determinantH < 0) {
 312                         // resizePoint is not working for some reason
 313                         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())));
 314                         m_selectedItem->setPos(resizePoint + itemOrigin);
 315                     } else
 316                         m_resizeMode = BottomLeft;
 317                 } else {
 318                     if (determinantH < 0)
 319                         m_resizeMode = TopRight;
 320                     else
 321                         m_resizeMode = BottomRight;
 322                 }
 323                 break;
 324             case BottomLeft:
 325                 determinantV = (bottomRight.x() - newpoint.x()) * (topRight.y() - newpoint.y()) - (bottomRight.y() - newpoint.y()) * (topRight.x() - newpoint.x());
 326                 determinantH = (topRight.x() - newpoint.x()) * (topLeft.y() - newpoint.y()) - (topRight.y() - newpoint.y()) * (topLeft.x() - newpoint.x());
 327                 if (determinantV < 0) {
 328                     if (determinantH < 0) {
 329                         newrect.setBottomRight(QPointF(newrect.width() - resizePoint.x(), resizePoint.y()));
 330                         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()));
 331                     } else
 332                         m_resizeMode = TopLeft;
 333                 } else {
 334                     if (determinantH < 0)
 335                         m_resizeMode = BottomRight;
 336                     else
 337                         m_resizeMode = TopRight;
 338                 }
 339                 break;
 340             case TopRight:
 341                 determinantV = (topLeft.x() - newpoint.x()) * (bottomLeft.y() - newpoint.y()) - (topLeft.y() - newpoint.y()) * (bottomLeft.x() - newpoint.x());
 342                 determinantH = (bottomLeft.x() - newpoint.x()) * (bottomRight.y() - newpoint.y()) - (bottomLeft.y() - newpoint.y()) * (bottomRight.x() - newpoint.x());
 343                 if (determinantV < 0) {
 344                     if (determinantH < 0) {
 345                         newrect.setBottomRight(QPointF(resizePoint.x(), newrect.bottom() - resizePoint.y()));
 346                         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()));
 347                     } else
 348                         m_resizeMode = BottomRight;
 349                 } else {
 350                     if (determinantH < 0)
 351                         m_resizeMode = TopLeft;
 352                     else
 353                         m_resizeMode = BottomLeft;
 354                 }
 355                 break;
 356             case BottomRight:
 357                 determinantV = (topLeft.x() - newpoint.x()) * (bottomLeft.y() - newpoint.y()) - (topLeft.y() - newpoint.y()) * (bottomLeft.x() - newpoint.x());
 358                 determinantH = (topRight.x() - newpoint.x()) * (topLeft.y() - newpoint.y()) - (topRight.y() - newpoint.y()) * (topLeft.x() - newpoint.x());
 359                 if (determinantV < 0) {
 360                     if (determinantH < 0)
 361                         newrect.setBottomRight(resizePoint);
 362                     else
 363                         m_resizeMode = TopRight;
 364                 } else {
 365                     if (determinantH < 0)
 366                         m_resizeMode = BottomLeft;
 367                     else
 368                         m_resizeMode = TopLeft;
 369                 }
 370                 break;
 371             case Left:
 372                 determinantV = (bottomRight.x() - newpoint.x()) * (topRight.y() - newpoint.y()) - (bottomRight.y() - newpoint.y()) * (topRight.x() - newpoint.x());
 373                 if (determinantV < 0) {
 374                     newrect.setRight(newrect.width() - resizePoint.x());
 375                     m_selectedItem->setPos(QPointF(transform.m11() * resizePoint.x() + transform.m31() + itemOrigin.x(), transform.m12() * resizePoint.x() + transform.m32() + itemOrigin.y()));
 376                 } else
 377                     m_resizeMode = Right;
 378                 break;
 379             case Right:
 380                 determinantV = (topLeft.x() - newpoint.x()) * (bottomLeft.y() - newpoint.y()) - (topLeft.y() - newpoint.y()) * (bottomLeft.x() - newpoint.x());
 381                 if (determinantV < 0)
 382                     newrect.setRight(resizePoint.x());
 383                 else
 384                     m_resizeMode = Left;
 385                 break;
 386             case Up:
 387                 determinantH = (bottomLeft.x() - newpoint.x()) * (bottomRight.y() - newpoint.y()) - (bottomLeft.y() - newpoint.y()) * (bottomRight.x() - newpoint.x());
 388                 if (determinantH < 0) {
 389                     newrect.setBottom(newrect.bottom() - resizePoint.y());
 390                     m_selectedItem->setPos(QPointF(transform.m21() * resizePoint.y() + transform.m31() + itemOrigin.x(), transform.m22() * resizePoint.y() + transform.m32() + itemOrigin.y()));
 391                 } else
 392                     m_resizeMode = Down;
 393                 break;
 394             case Down:
 395                 determinantH = (topRight.x() - newpoint.x()) * (topLeft.y() - newpoint.y()) - (topRight.y() - newpoint.y()) * (topLeft.x() - newpoint.x());
 396                 if (determinantH < 0)
 397                     newrect.setBottom(resizePoint.y());
 398                 else
 399                     m_resizeMode = Up;
 400                 break;
 401             default:
 402                 QPointF diff = e->scenePos() - m_sceneClickPoint;
 403                 m_sceneClickPoint = e->scenePos();
 404                 m_selectedItem->moveBy(diff.x(), diff.y());
 405                 break;
 406             }
 407             if (m_selectedItem->type() == 3 && m_resizeMode != NoResize) {
 408                 QGraphicsRectItem *gi = (QGraphicsRectItem*)m_selectedItem;
 409                 // Resize using aspect ratio
 410                 if (!m_selectedItem->data(0).isNull()) {
 411                     // we want to keep aspect ratio
 412                     double hRatio = (double) newrect.width() / m_selectedItem->data(0).toInt();
 413                     double vRatio = (double) newrect.height() / m_selectedItem->data(1).toInt();
 414                     if (hRatio < vRatio) newrect.setHeight(m_selectedItem->data(1).toInt() * hRatio);
 415                     else newrect.setWidth(m_selectedItem->data(0).toInt() * vRatio);
 416                 }
 417
 418                 gi->setRect(newrect);
 419             }
 420             /*else {
 421             qreal s;
 422             if (resizeMode == Left || resizeMode == Right ) s = m_selectedItem->boundingRect().width() / newrect.width();
 423             else s = m_selectedItem->boundingRect().height() / newrect.height();
 424             m_selectedItem->scale( 1 / s, 1 / s );
 425             kDebug()<<"/// SCALING SVG, RESIZE MODE: "<<resizeMode<<", RECT:"<<m_selectedItem->boundingRect();
 426             }*/
 427             //gi->setPos(m_selectedItem->scenePos());
 428             /*if (resizeMode == NoResize) {
 429                 QGraphicsScene::mouseMoveEvent(e);
 430                 return;
 431             }*/
 432         } else if (m_selectedItem->type() == 8) {
 433             QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(m_selectedItem);
 434             if (t->textInteractionFlags() & Qt::TextEditorInteraction) {
 435                 QGraphicsScene::mouseMoveEvent(e);
 436                 return;
 437             }
 438             QPointF diff = e->scenePos() - m_sceneClickPoint;
 439             m_sceneClickPoint = e->scenePos();
 440             m_selectedItem->moveBy(diff.x(), diff.y());
 441         }
 442         emit itemMoved();
 443     } else if (m_tool == TITLE_SELECT) {
 444         QPointF p = e->scenePos();
 445         p += QPoint(-2, -2);
 446         m_resizeMode = NoResize;
 447         bool itemFound = false;
 448         foreach(const QGraphicsItem* g, items(QRectF(p , QSizeF(4, 4)).toRect())) {
 449             if ((g->type() == 13 || g->type() == 7) && g->zValue() > -1000) {
 450                 // image or svg item
 451                 setCursor(Qt::OpenHandCursor);
 452                 break;
 453             } else if (g->type() == 3 && g->zValue() > -1000) {
 454                 QRectF r = ((const QGraphicsRectItem*)g)->rect();
 455                 itemFound = true;
 456                 /*
 457                  * The vertices of the rectangle (check for matrix
 458                  * transformation); to be replaced by QTransform::map()?
 459                  */
 460                 QPointF itemOrigin = g->scenePos();
 461                 QTransform transform = g->transform();
 462                 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());
 463                 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());
 464                 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());
 465                 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());
 466                 // The borders (using the transformed coordinates)
 467                 QGraphicsLineItem borderTop(topLeft.x(), topLeft.y(), topRight.x(), topRight.y());
 468                 QGraphicsLineItem borderRight(topRight.x(), topRight.y(), bottomRight.x(), bottomRight.y());
 469                 QGraphicsLineItem borderBottom(bottomRight.x(), bottomRight.y(), bottomLeft.x(), bottomLeft.y());
 470                 QGraphicsLineItem borderLeft(bottomLeft.x(), bottomLeft.y(), topLeft.x(), topLeft.y());
 471                 // The area interested by the mouse pointer
 472                 QPainterPath mouseArea;
 473                 mouseArea.addRect(e->scenePos().toPoint().x() - 4 / m_zoom, e->scenePos().toPoint().y() - 4 / m_zoom, 8 / m_zoom, 8 / m_zoom);
 474                 // Check for collisions between the mouse and the borders
 475                 if ((borderLeft.collidesWithPath(mouseArea) && borderTop.collidesWithPath(mouseArea)) || (borderRight.collidesWithPath(mouseArea) && borderBottom.collidesWithPath(mouseArea)))
 476                     setResizeCursor(borderLeft.line().angle() - 45);
 477                 else if ((borderLeft.collidesWithPath(mouseArea) && borderBottom.collidesWithPath(mouseArea)) || (borderRight.collidesWithPath(mouseArea) && borderTop.collidesWithPath(mouseArea)))
 478                     setResizeCursor(borderLeft.line().angle() + 45);
 479                 else if (borderLeft.collidesWithPath(mouseArea) || borderRight.collidesWithPath(mouseArea))
 480                     setResizeCursor(borderLeft.line().angle());
 481                 else if (borderTop.collidesWithPath(mouseArea) || borderBottom.collidesWithPath(mouseArea))
 482                     setResizeCursor(borderTop.line().angle());
 483                 else
 484                     setCursor(Qt::OpenHandCursor);
 485                 break;
 486             }
 487             if (!itemFound) setCursor(Qt::ArrowCursor);
 488         }
 489         QGraphicsScene::mouseMoveEvent(e);
 490     } else if (m_tool == TITLE_RECTANGLE && e->buttons() & Qt::LeftButton) {
 491         if (m_selectedItem == NULL) {
 492             // create new rect item
 493             QRectF r(0, 0, e->scenePos().x() - m_sceneClickPoint.x(), e->scenePos().y() - m_sceneClickPoint.y());
 494             r = r.normalized();
 495             m_selectedItem = addRect(QRectF(0, 0, r.width(), r.height()));
 496             emit newRect((QGraphicsRectItem *) m_selectedItem);
 497             m_selectedItem->setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
 498             m_selectedItem->setPos(m_sceneClickPoint);
 499             m_resizeMode = BottomRight;
 500             QGraphicsScene::mouseMoveEvent(e);
 501         }
 502     }
 503 }
 504
 505 void GraphicsSceneRectMove::wheelEvent(QGraphicsSceneWheelEvent * wheelEvent)
 506 {
 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 }
 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 }