1 /***************************************************************************
2 * copyright (C) 2008 by Marco Gittler (g.marco@freenet.de) *
3 * Copyright (C) 2008 by Jean-Baptiste Mardelle (jb@kdenlive.org) *
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. *
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. *
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 ***************************************************************************/
21 #include "graphicsscenerectmove.h"
24 #include <QGraphicsSceneMouseEvent>
25 #include <QGraphicsRectItem>
26 #include <QGraphicsSvgItem>
27 #include <QGraphicsView>
29 #include <QTextCursor>
32 #include <QApplication>
36 GraphicsSceneRectMove::GraphicsSceneRectMove(QObject *parent) :
37 QGraphicsScene(parent),
39 m_resizeMode(NoResize),
40 m_tool(TITLE_RECTANGLE)
44 setBackgroundBrush(QBrush(Qt::transparent));
48 void GraphicsSceneRectMove::setSelectedItem(QGraphicsItem *item)
51 m_selectedItem = item;
52 item->setSelected(true);
56 TITLETOOL GraphicsSceneRectMove::tool()
61 void GraphicsSceneRectMove::setTool(TITLETOOL tool)
66 setCursor(Qt::CrossCursor);
69 setCursor(Qt::IBeamCursor);
72 setCursor(Qt::ArrowCursor);
76 void GraphicsSceneRectMove::keyPressEvent(QKeyEvent * keyEvent)
78 if (m_selectedItem == NULL || !(m_selectedItem->flags() & QGraphicsItem::ItemIsMovable)) {
79 QGraphicsScene::keyPressEvent(keyEvent);
83 if (m_selectedItem->type() == 8) {
84 QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(m_selectedItem);
85 if (t->textInteractionFlags() & Qt::TextEditorInteraction) {
86 QGraphicsScene::keyPressEvent(keyEvent);
90 if (keyEvent->modifiers() & Qt::ControlModifier) diff = 10;
91 switch (keyEvent->key()) {
93 m_selectedItem->setPos(m_selectedItem->pos() - QPointF(diff, 0));
97 m_selectedItem->setPos(m_selectedItem->pos() + QPointF(diff, 0));
101 m_selectedItem->setPos(m_selectedItem->pos() - QPointF(0, diff));
105 m_selectedItem->setPos(m_selectedItem->pos() + QPointF(0, diff));
109 case Qt::Key_Backspace:
110 delete m_selectedItem;
111 m_selectedItem = NULL;
112 emit selectionChanged();
115 QGraphicsScene::keyPressEvent(keyEvent);
117 emit actionFinished();
120 void GraphicsSceneRectMove::mouseDoubleClickEvent(QGraphicsSceneMouseEvent* e)
122 QPointF p = e->scenePos();
124 m_resizeMode = NoResize;
125 m_selectedItem = NULL;
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;
131 QGraphicsItem* g = i.at(0);
133 if (g->type() == 8) {
134 QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(g);
136 t->setTextInteractionFlags(Qt::TextEditorInteraction);
137 } else emit doubleClickEvent();
139 QGraphicsScene::mouseDoubleClickEvent(e);
142 void GraphicsSceneRectMove::mouseReleaseEvent(QGraphicsSceneMouseEvent *e)
144 if (m_tool == TITLE_RECTANGLE && m_selectedItem) setSelectedItem(m_selectedItem);
145 QGraphicsScene::mouseReleaseEvent(e);
146 emit actionFinished();
149 void GraphicsSceneRectMove::mousePressEvent(QGraphicsSceneMouseEvent* e)
151 m_clickPoint = e->screenPos();
152 QPointF p = e->scenePos();
154 m_resizeMode = NoResize;
155 const QList <QGraphicsItem *> list = items(QRectF(p , QSizeF(4, 4)).toRect());
156 QGraphicsItem *item = NULL;
157 bool hasSelected = false;
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()) {
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);
178 m_selectedItem = NULL;
179 foreach(QGraphicsItem* g, list) {
180 if (g->zValue() > -1000) {
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);
196 t->setTextInteractionFlags(Qt::NoTextInteraction);
197 setCursor(Qt::ClosedHandCursor);
198 } else if (item->type() == 3 || item->type() == 13 || item->type() == 7) {
200 if (m_selectedItem->type() == 3)
201 r1 = ((QGraphicsRectItem*)m_selectedItem)->rect().normalized();
203 r1 = m_selectedItem->boundingRect().normalized();
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));
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);
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;
237 setCursor(Qt::ClosedHandCursor);
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);
253 kDebug() << "////// MOUSE CLICK, RESIZE MODE: " << m_resizeMode;
257 void GraphicsSceneRectMove::clearTextSelection()
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);
267 m_selectedItem = NULL;
271 void GraphicsSceneRectMove::mouseMoveEvent(QGraphicsSceneMouseEvent* e)
273 if (e->buttons() != Qt::NoButton && (e->screenPos() - m_clickPoint).manhattanLength() < QApplication::startDragDistance()) {
277 if (m_selectedItem && e->buttons() & Qt::LeftButton) {
278 if (m_selectedItem->type() == 3 || m_selectedItem->type() == 13 || m_selectedItem->type() == 7) {
280 if (m_selectedItem->type() == 3)
281 newrect = ((QGraphicsRectItem*)m_selectedItem)->rect();
283 newrect = m_selectedItem->boundingRect();
284 QPointF newpoint = e->scenePos();
286 * The vertices of the rectangle (check for matrix
287 * transformation); to be replaced by QTransform::map()?
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());
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
303 int determinantH, determinantV;
304 switch (m_resizeMode) {
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);
314 m_resizeMode = BottomLeft;
316 if (determinantH < 0)
317 m_resizeMode = TopRight;
319 m_resizeMode = BottomRight;
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()));
330 m_resizeMode = TopLeft;
332 if (determinantH < 0)
333 m_resizeMode = BottomRight;
335 m_resizeMode = 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()));
346 m_resizeMode = BottomRight;
348 if (determinantH < 0)
349 m_resizeMode = TopLeft;
351 m_resizeMode = BottomLeft;
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);
361 m_resizeMode = TopRight;
363 if (determinantH < 0)
364 m_resizeMode = BottomLeft;
366 m_resizeMode = TopLeft;
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()));
375 m_resizeMode = 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());
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()));
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());
400 QPointF diff = e->scenePos() - m_sceneClickPoint;
401 m_sceneClickPoint = e->scenePos();
402 m_selectedItem->moveBy(diff.x(), diff.y());
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);
416 gi->setRect(newrect);
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();
425 //gi->setPos(m_selectedItem->scenePos());
426 /*if (resizeMode == NoResize) {
427 QGraphicsScene::mouseMoveEvent(e);
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);
436 QPointF diff = e->scenePos() - m_sceneClickPoint;
437 m_sceneClickPoint = e->scenePos();
438 m_selectedItem->moveBy(diff.x(), diff.y());
441 } else if (m_tool == TITLE_SELECT) {
442 QList<QGraphicsView*> viewlist = views();
443 QGraphicsView *view = NULL;
444 if (viewlist.size() > 0) view = viewlist[0];
446 QPointF p = e->scenePos();
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) {
454 setCursor(Qt::OpenHandCursor);
456 } else if (g->type() == 3 && g->zValue() > -1000) {
457 if (view == NULL) continue;
458 QRectF r1 = ((const QGraphicsRectItem*)g)->rect().normalized();
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));
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);
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);
483 setCursor(Qt::OpenHandCursor);
486 if (!itemFound) setCursor(Qt::ArrowCursor);
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());
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);
504 void GraphicsSceneRectMove::wheelEvent(QGraphicsSceneWheelEvent * wheelEvent)
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);
513 } else wheelEvent->setAccepted(false);
516 void GraphicsSceneRectMove::setScale(double s)
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);
525 //kDebug()<<"////////// ZOOM: "<<zoom;
528 void GraphicsSceneRectMove::setZoom(double s)
530 QList<QGraphicsView*> viewlist = views();
531 if (viewlist.size() > 0) {
532 viewlist[0]->resetTransform();
533 viewlist[0]->scale(s, s);
537 //kDebug()<<"////////// ZOOM: "<<zoom;
540 void GraphicsSceneRectMove::setCursor(QCursor c)
542 const QList<QGraphicsView*> l = views();
543 foreach(QGraphicsView* v, l) {
548 void GraphicsSceneRectMove::setResizeCursor(qreal angle)
550 // % is not working...
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);
565 void GraphicsSceneRectMove::slotUpdateFontSize(int s)
570 #include "graphicsscenerectmove.moc"