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));
47 void GraphicsSceneRectMove::setSelectedItem(QGraphicsItem *item)
50 m_selectedItem = item;
51 item->setSelected(true);
55 TITLETOOL GraphicsSceneRectMove::tool()
60 void GraphicsSceneRectMove::setTool(TITLETOOL tool)
65 setCursor(Qt::CrossCursor);
68 setCursor(Qt::IBeamCursor);
71 setCursor(Qt::ArrowCursor);
76 void GraphicsSceneRectMove::keyPressEvent(QKeyEvent * keyEvent)
78 if (m_selectedItem == NULL) {
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();
121 void GraphicsSceneRectMove::mouseDoubleClickEvent(QGraphicsSceneMouseEvent* e)
123 QPointF p = e->scenePos();
125 m_resizeMode = NoResize;
126 m_selectedItem = NULL;
127 QGraphicsItem* g = items(QRectF(p , QSizeF(4, 4)).toRect()).at(0);
129 if (g->type() == 8) {
130 QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(g);
132 t->setTextInteractionFlags(Qt::TextEditorInteraction);
133 } else emit doubleClickEvent();
135 QGraphicsScene::mouseDoubleClickEvent(e);
138 void GraphicsSceneRectMove::mouseReleaseEvent(QGraphicsSceneMouseEvent *e)
140 if (m_tool == TITLE_RECTANGLE && m_selectedItem) setSelectedItem(m_selectedItem);
141 QGraphicsScene::mouseReleaseEvent(e);
142 emit actionFinished();
145 void GraphicsSceneRectMove::mousePressEvent(QGraphicsSceneMouseEvent* e)
147 m_clickPoint = e->screenPos();
148 QPointF p = e->scenePos();
150 m_resizeMode = NoResize;
151 const QList <QGraphicsItem *> list = items(QRectF(p , QSizeF(4, 4)).toRect());
152 QGraphicsItem *item = NULL;
153 bool hasSelected = false;
155 if (m_tool == TITLE_SELECT) {
156 foreach(QGraphicsItem *g, list) {
157 kDebug() << " - - CHECKING ITEM Z:" << g->zValue() << ", TYPE: " << g->type();
158 // check is there is a selected item in list
159 if (g->zValue() > -1000 && g->isSelected()) {
166 if (m_selectedItem && m_selectedItem->type() == 8) {
167 // disable text editing
168 QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(m_selectedItem);
169 t->textCursor().setPosition(0);
170 QTextBlock cur = t->textCursor().block();
171 t->setTextCursor(QTextCursor(cur));
172 t->setTextInteractionFlags(Qt::NoTextInteraction);
174 m_selectedItem = NULL;
175 foreach(QGraphicsItem* g, list) {
176 if (g->zValue() > -1000) {
183 m_sceneClickPoint = e->scenePos();
184 m_selectedItem = item;
185 kDebug() << "///////// ITEM TYPE: " << item->type();
186 if (item->type() == 8) {
187 QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(item);
188 if (t->textInteractionFlags() == Qt::TextEditorInteraction) {
189 QGraphicsScene::mousePressEvent(e);
192 t->setTextInteractionFlags(Qt::NoTextInteraction);
193 setCursor(Qt::ClosedHandCursor);
194 } else if (item->type() == 3 || item->type() == 13 || item->type() == 7) {
196 if (m_selectedItem->type() == 3) {
197 r = ((QGraphicsRectItem*)m_selectedItem)->rect();
198 } else r = m_selectedItem->boundingRect();
200 r.translate(item->scenePos());
201 if ((r.toRect().topLeft() - e->scenePos().toPoint()).manhattanLength() < 6 / m_zoom) {
202 m_resizeMode = TopLeft;
203 } else if ((r.toRect().bottomLeft() - e->scenePos().toPoint()).manhattanLength() < 6 / m_zoom) {
204 m_resizeMode = BottomLeft;
205 } else if ((r.toRect().topRight() - e->scenePos().toPoint()).manhattanLength() < 6 / m_zoom) {
206 m_resizeMode = TopRight;
207 } else if ((r.toRect().bottomRight() - e->scenePos().toPoint()).manhattanLength() < 6 / m_zoom) {
208 m_resizeMode = BottomRight;
209 } else if (qAbs(r.toRect().left() - e->scenePos().toPoint().x()) < 3 / m_zoom) {
211 } else if (qAbs(r.toRect().right() - e->scenePos().toPoint().x()) < 3 / m_zoom) {
212 m_resizeMode = Right;
213 } else if (qAbs(r.toRect().top() - e->scenePos().toPoint().y()) < 3 / m_zoom) {
215 } else if (qAbs(r.toRect().bottom() - e->scenePos().toPoint().y()) < 3 / m_zoom) {
217 } else setCursor(Qt::ClosedHandCursor);
220 QGraphicsScene::mousePressEvent(e);
221 } else if (m_tool == TITLE_RECTANGLE) {
222 m_sceneClickPoint = e->scenePos();
223 m_selectedItem = NULL;
224 } else if (m_tool == TITLE_TEXT) {
225 m_selectedItem = addText(QString());
226 emit newText((QGraphicsTextItem *) m_selectedItem);
227 m_selectedItem->setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
228 ((QGraphicsTextItem *)m_selectedItem)->setTextInteractionFlags(Qt::TextEditorInteraction);
229 m_selectedItem->setPos(e->scenePos());
230 QGraphicsScene::mousePressEvent(e);
233 kDebug() << "////// MOUSE CLICK, RESIZE MODE: " << m_resizeMode;
237 void GraphicsSceneRectMove::clearTextSelection()
239 if (m_selectedItem && m_selectedItem->type() == 8) {
240 // disable text editing
241 QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(m_selectedItem);
242 t->textCursor().setPosition(0);
243 QTextBlock cur = t->textCursor().block();
244 t->setTextCursor(QTextCursor(cur));
245 t->setTextInteractionFlags(Qt::NoTextInteraction);
247 m_selectedItem = NULL;
252 void GraphicsSceneRectMove::mouseMoveEvent(QGraphicsSceneMouseEvent* e)
254 if ((e->screenPos() - m_clickPoint).manhattanLength() < QApplication::startDragDistance()) {
258 if (m_selectedItem && e->buttons() & Qt::LeftButton) {
259 if (m_selectedItem->type() == 3 || m_selectedItem->type() == 13 || m_selectedItem->type() == 7) {
261 if (m_selectedItem->type() == 3) {
262 newrect = ((QGraphicsRectItem*)m_selectedItem)->rect();
263 } else newrect = m_selectedItem->boundingRect();
265 QPointF newpoint = e->scenePos();
266 //newpoint -= m_selectedItem->scenePos();
267 switch (m_resizeMode) {
269 if (newpoint.x() < newrect.right() + m_selectedItem->pos().x() && newpoint.y() < newrect.bottom() + m_selectedItem->pos().y()) {
270 newrect.setBottomRight(newrect.bottomRight() + m_selectedItem->pos() - newpoint);
271 m_selectedItem->setPos(newpoint);
275 if (newpoint.x() < newrect.right() + m_selectedItem->pos().x() && newpoint.y() > m_selectedItem->pos().y()) {
276 newrect.setBottomRight(QPointF(newrect.bottomRight().x() + m_selectedItem->pos().x() - newpoint.x(), newpoint.y() - m_selectedItem->pos().y()));
277 m_selectedItem->setPos(QPointF(newpoint.x(), m_selectedItem->pos().y()));
281 if (newpoint.x() > m_selectedItem->pos().x() && newpoint.y() < newrect.bottom() + m_selectedItem->pos().y()) {
282 newrect.setBottomRight(QPointF(newpoint.x() - m_selectedItem->pos().x(), newrect.bottom() + m_selectedItem->pos().y() - newpoint.y()));
283 m_selectedItem->setPos(QPointF(m_selectedItem->pos().x(), newpoint.y()));
287 if (newpoint.x() > m_selectedItem->pos().x() && newpoint.y() > m_selectedItem->pos().y()) {
288 newrect.setBottomRight(newpoint - m_selectedItem->pos());
292 if (newpoint.x() < newrect.right() + m_selectedItem->pos().x()) {
293 newrect.setRight(m_selectedItem->pos().x() + newrect.width() - newpoint.x());
294 m_selectedItem->setPos(QPointF(newpoint.x(), m_selectedItem->pos().y()));
298 if (newpoint.x() > m_selectedItem->pos().x()) {
299 newrect.setRight(newpoint.x() - m_selectedItem->pos().x());
303 if (newpoint.y() < newrect.bottom() + m_selectedItem->pos().y()) {
304 newrect.setBottom(m_selectedItem->pos().y() + newrect.bottom() - newpoint.y());
305 m_selectedItem->setPos(QPointF(m_selectedItem->pos().x(), newpoint.y()));
309 if (newpoint.y() > m_selectedItem->pos().y()) {
310 newrect.setBottom(newpoint.y() - m_selectedItem->pos().y());
314 QPointF diff = e->scenePos() - m_sceneClickPoint;
315 m_sceneClickPoint = e->scenePos();
316 m_selectedItem->moveBy(diff.x(), diff.y());
319 if (m_selectedItem->type() == 3 && m_resizeMode != NoResize) {
320 QGraphicsRectItem *gi = (QGraphicsRectItem*)m_selectedItem;
321 gi->setRect(newrect);
325 if (resizeMode == Left || resizeMode == Right ) s = m_selectedItem->boundingRect().width() / newrect.width();
326 else s = m_selectedItem->boundingRect().height() / newrect.height();
327 m_selectedItem->scale( 1 / s, 1 / s );
328 kDebug()<<"/// SCALING SVG, RESIZE MODE: "<<resizeMode<<", RECT:"<<m_selectedItem->boundingRect();
330 //gi->setPos(m_selectedItem->scenePos());
331 /*if (resizeMode == NoResize) {
332 QGraphicsScene::mouseMoveEvent(e);
335 } else if (m_selectedItem->type() == 8) {
336 QGraphicsTextItem *t = static_cast<QGraphicsTextItem *>(m_selectedItem);
337 if (t->textInteractionFlags() & Qt::TextEditorInteraction) {
338 QGraphicsScene::mouseMoveEvent(e);
341 QPointF diff = e->scenePos() - m_sceneClickPoint;
342 m_sceneClickPoint = e->scenePos();
343 m_selectedItem->moveBy(diff.x(), diff.y());
346 } else if (m_tool == TITLE_SELECT) {
347 QPointF p = e->scenePos();
349 m_resizeMode = NoResize;
350 bool itemFound = false;
351 foreach(const QGraphicsItem* g, items(QRectF(p , QSizeF(4, 4)).toRect())) {
352 if ((g->type() == 13 || g->type() == 7) && g->zValue() > -1000) {
354 setCursor(Qt::OpenHandCursor);
356 } else if (g->type() == 3 && g->zValue() > -1000) {
357 QRectF r = ((const QGraphicsRectItem*)g)->rect();
358 r.translate(g->scenePos());
360 if ((r.toRect().topLeft() - e->scenePos().toPoint()).manhattanLength() < 6 / m_zoom) {
361 setCursor(QCursor(Qt::SizeFDiagCursor));
362 } else if ((r.toRect().bottomLeft() - e->scenePos().toPoint()).manhattanLength() < 6 / m_zoom) {
363 setCursor(QCursor(Qt::SizeBDiagCursor));
364 } else if ((r.toRect().topRight() - e->scenePos().toPoint()).manhattanLength() < 6 / m_zoom) {
365 setCursor(QCursor(Qt::SizeBDiagCursor));
366 } else if ((r.toRect().bottomRight() - e->scenePos().toPoint()).manhattanLength() < 6 / m_zoom) {
367 setCursor(QCursor(Qt::SizeFDiagCursor));
368 } else if (qAbs(r.toRect().left() - e->scenePos().toPoint().x()) < 3 / m_zoom) {
369 setCursor(Qt::SizeHorCursor);
370 } else if (qAbs(r.toRect().right() - e->scenePos().toPoint().x()) < 3 / m_zoom) {
371 setCursor(Qt::SizeHorCursor);
372 } else if (qAbs(r.toRect().top() - e->scenePos().toPoint().y()) < 3 / m_zoom) {
373 setCursor(Qt::SizeVerCursor);
374 } else if (qAbs(r.toRect().bottom() - e->scenePos().toPoint().y()) < 3 / m_zoom) {
375 setCursor(Qt::SizeVerCursor);
376 } else setCursor(Qt::OpenHandCursor);
379 if (!itemFound) setCursor(Qt::ArrowCursor);
381 QGraphicsScene::mouseMoveEvent(e);
382 } else if (m_tool == TITLE_RECTANGLE && e->buttons() & Qt::LeftButton) {
383 if (m_selectedItem == NULL && (m_clickPoint - e->screenPos()).manhattanLength() >= QApplication::startDragDistance()) {
384 // create new rect item
385 m_selectedItem = addRect(0, 0, e->scenePos().x() - m_sceneClickPoint.x(), e->scenePos().y() - m_sceneClickPoint.y());
386 emit newRect((QGraphicsRectItem *) m_selectedItem);
387 m_selectedItem->setFlags(QGraphicsItem::ItemIsMovable | QGraphicsItem::ItemIsSelectable);
388 m_selectedItem->setPos(m_sceneClickPoint);
389 m_resizeMode = BottomRight;
390 QGraphicsScene::mouseMoveEvent(e);
395 void GraphicsSceneRectMove::wheelEvent(QGraphicsSceneWheelEvent * wheelEvent)
397 QList<QGraphicsView*> viewlist = views();
398 //kDebug() << wheelEvent->delta() << " " << zoom;
399 if (viewlist.size() > 0) {
400 if (wheelEvent->delta() < 0) emit sceneZoom(true);
401 else emit sceneZoom(false);
405 void GraphicsSceneRectMove::setScale(double s)
407 if (m_zoom < 1.0 / 7.0 && s < 1.0) return;
408 else if (m_zoom > 10.0 / 7.9 && s > 1.0) return;
409 QList<QGraphicsView*> viewlist = views();
410 if (viewlist.size() > 0) {
411 viewlist[0]->scale(s, s);
414 //kDebug()<<"////////// ZOOM: "<<zoom;
417 void GraphicsSceneRectMove::setZoom(double s)
419 QList<QGraphicsView*> viewlist = views();
420 if (viewlist.size() > 0) {
421 viewlist[0]->resetTransform();
422 viewlist[0]->scale(s, s);
426 //kDebug()<<"////////// ZOOM: "<<zoom;
429 void GraphicsSceneRectMove::setCursor(QCursor c)
431 const QList<QGraphicsView*> l = views();
432 foreach(QGraphicsView* v, l) {