source: trunk/src/gui/graphicsview/qgraphicsitem.h@ 50

Last change on this file since 50 was 2, checked in by Dmitry A. Kuminov, 16 years ago

Initially imported qt-all-opensource-src-4.5.1 from Trolltech.
File size: 34.8 KB
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1/****************************************************************************
2**
3** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
4** Contact: Qt Software Information (qt-info@nokia.com)
5**
6** This file is part of the QtGui module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL$
9** Commercial Usage
10** Licensees holding valid Qt Commercial licenses may use this file in
11** accordance with the Qt Commercial License Agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and Nokia.
14**
15** GNU Lesser General Public License Usage
16** Alternatively, this file may be used under the terms of the GNU Lesser
17** General Public License version 2.1 as published by the Free Software
18** Foundation and appearing in the file LICENSE.LGPL included in the
19** packaging of this file. Please review the following information to
20** ensure the GNU Lesser General Public License version 2.1 requirements
21** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
22**
23** In addition, as a special exception, Nokia gives you certain
24** additional rights. These rights are described in the Nokia Qt LGPL
25** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
26** package.
27**
28** GNU General Public License Usage
29** Alternatively, this file may be used under the terms of the GNU
30** General Public License version 3.0 as published by the Free Software
31** Foundation and appearing in the file LICENSE.GPL included in the
32** packaging of this file. Please review the following information to
33** ensure the GNU General Public License version 3.0 requirements will be
34** met: http://www.gnu.org/copyleft/gpl.html.
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36** If you are unsure which license is appropriate for your use, please
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38** $QT_END_LICENSE$
39**
40****************************************************************************/
41
42#ifndef QGRAPHICSITEM_H
43#define QGRAPHICSITEM_H
44
45#include <QtCore/qglobal.h>
46#include <QtCore/qobject.h>
47#include <QtCore/qvariant.h>
48#include <QtCore/qrect.h>
49#include <QtGui/qpainterpath.h>
50#include <QtGui/qpixmap.h>
51
52class tst_QGraphicsItem;
53
54QT_BEGIN_HEADER
55
56QT_BEGIN_NAMESPACE
57
58QT_MODULE(Gui)
59
60#if !defined(QT_NO_GRAPHICSVIEW) || (QT_EDITION & QT_MODULE_GRAPHICSVIEW) != QT_MODULE_GRAPHICSVIEW
61
62class QBrush;
63class QCursor;
64class QFocusEvent;
65class QGraphicsItemGroup;
66class QGraphicsSceneContextMenuEvent;
67class QGraphicsSceneDragDropEvent;
68class QGraphicsSceneEvent;
69class QGraphicsSceneHoverEvent;
70class QGraphicsSceneMouseEvent;
71class QGraphicsSceneWheelEvent;
72class QGraphicsScene;
73class QGraphicsWidget;
74class QInputMethodEvent;
75class QKeyEvent;
76class QMatrix;
77class QMenu;
78class QPainter;
79class QPen;
80class QPointF;
81class QRectF;
82class QStyleOptionGraphicsItem;
83
84class QGraphicsItemPrivate;
85class Q_GUI_EXPORT QGraphicsItem
86{
87public:
88 enum GraphicsItemFlag {
89 ItemIsMovable = 0x1,
90 ItemIsSelectable = 0x2,
91 ItemIsFocusable = 0x4,
92 ItemClipsToShape = 0x8,
93 ItemClipsChildrenToShape = 0x10,
94 ItemIgnoresTransformations = 0x20,
95 ItemIgnoresParentOpacity = 0x40,
96 ItemDoesntPropagateOpacityToChildren = 0x80,
97 ItemStacksBehindParent = 0x100
98 };
99 Q_DECLARE_FLAGS(GraphicsItemFlags, GraphicsItemFlag)
100
101 enum GraphicsItemChange {
102 ItemPositionChange,
103 ItemMatrixChange,
104 ItemVisibleChange,
105 ItemEnabledChange,
106 ItemSelectedChange,
107 ItemParentChange,
108 ItemChildAddedChange,
109 ItemChildRemovedChange,
110 ItemTransformChange,
111 ItemPositionHasChanged,
112 ItemTransformHasChanged,
113 ItemSceneChange,
114 ItemVisibleHasChanged,
115 ItemEnabledHasChanged,
116 ItemSelectedHasChanged,
117 ItemParentHasChanged,
118 ItemSceneHasChanged,
119 ItemCursorChange,
120 ItemCursorHasChanged,
121 ItemToolTipChange,
122 ItemToolTipHasChanged,
123 ItemFlagsChange,
124 ItemFlagsHaveChanged,
125 ItemZValueChange,
126 ItemZValueHasChanged,
127 ItemOpacityChange,
128 ItemOpacityHasChanged
129 };
130
131 enum CacheMode {
132 NoCache,
133 ItemCoordinateCache,
134 DeviceCoordinateCache
135 };
136
137 QGraphicsItem(QGraphicsItem *parent = 0
138#ifndef Q_QDOC
139 // obsolete argument
140 , QGraphicsScene *scene = 0
141#endif
142 );
143 virtual ~QGraphicsItem();
144
145 QGraphicsScene *scene() const;
146
147 QGraphicsItem *parentItem() const;
148 QGraphicsItem *topLevelItem() const;
149 QGraphicsWidget *parentWidget() const;
150 QGraphicsWidget *topLevelWidget() const;
151 QGraphicsWidget *window() const;
152 void setParentItem(QGraphicsItem *parent);
153 QList<QGraphicsItem *> children() const; // ### obsolete
154 QList<QGraphicsItem *> childItems() const;
155 bool isWidget() const;
156 bool isWindow() const;
157
158 QGraphicsItemGroup *group() const;
159 void setGroup(QGraphicsItemGroup *group);
160
161 GraphicsItemFlags flags() const;
162 void setFlag(GraphicsItemFlag flag, bool enabled = true);
163 void setFlags(GraphicsItemFlags flags);
164
165 CacheMode cacheMode() const;
166 void setCacheMode(CacheMode mode, const QSize &cacheSize = QSize());
167
168#ifndef QT_NO_TOOLTIP
169 QString toolTip() const;
170 void setToolTip(const QString &toolTip);
171#endif
172
173#ifndef QT_NO_CURSOR
174 QCursor cursor() const;
175 void setCursor(const QCursor &cursor);
176 bool hasCursor() const;
177 void unsetCursor();
178#endif
179
180 bool isVisible() const;
181 bool isVisibleTo(const QGraphicsItem *parent) const;
182 void setVisible(bool visible);
183 inline void hide() { setVisible(false); }
184 inline void show() { setVisible(true); }
185
186 bool isEnabled() const;
187 void setEnabled(bool enabled);
188
189 bool isSelected() const;
190 void setSelected(bool selected);
191
192 bool acceptDrops() const;
193 void setAcceptDrops(bool on);
194
195 qreal opacity() const;
196 qreal effectiveOpacity() const;
197 void setOpacity(qreal opacity);
198
199 Qt::MouseButtons acceptedMouseButtons() const;
200 void setAcceptedMouseButtons(Qt::MouseButtons buttons);
201
202 bool acceptsHoverEvents() const; // obsolete
203 void setAcceptsHoverEvents(bool enabled); // obsolete
204 bool acceptHoverEvents() const;
205 void setAcceptHoverEvents(bool enabled);
206
207 bool handlesChildEvents() const;
208 void setHandlesChildEvents(bool enabled);
209
210 bool hasFocus() const;
211 void setFocus(Qt::FocusReason focusReason = Qt::OtherFocusReason);
212 void clearFocus();
213
214 void grabMouse();
215 void ungrabMouse();
216 void grabKeyboard();
217 void ungrabKeyboard();
218
219 // Positioning in scene coordinates
220 QPointF pos() const;
221 inline qreal x() const { return pos().x(); }
222 inline qreal y() const { return pos().y(); }
223 QPointF scenePos() const;
224 void setPos(const QPointF &pos);
225 inline void setPos(qreal x, qreal y);
226 inline void moveBy(qreal dx, qreal dy) { setPos(pos().x() + dx, pos().y() + dy); }
227
228 void ensureVisible(const QRectF &rect = QRectF(), int xmargin = 50, int ymargin = 50);
229 inline void ensureVisible(qreal x, qreal y, qreal w, qreal h, int xmargin = 50, int ymargin = 50);
230
231 // Local transformation
232 QMatrix matrix() const;
233 QMatrix sceneMatrix() const;
234 void setMatrix(const QMatrix &matrix, bool combine = false);
235 void resetMatrix();
236 QTransform transform() const;
237 QTransform sceneTransform() const;
238 QTransform deviceTransform(const QTransform &viewportTransform) const;
239 QTransform itemTransform(const QGraphicsItem *other, bool *ok = 0) const;
240 void setTransform(const QTransform &matrix, bool combine = false);
241 void resetTransform();
242
243 void rotate(qreal angle);
244 void scale(qreal sx, qreal sy);
245 void shear(qreal sh, qreal sv);
246 void translate(qreal dx, qreal dy);
247 virtual void advance(int phase);
248
249 // Stacking order
250 qreal zValue() const;
251 void setZValue(qreal z);
252
253 // Hit test
254 virtual QRectF boundingRect() const = 0;
255 QRectF childrenBoundingRect() const;
256 QRectF sceneBoundingRect() const;
257 virtual QPainterPath shape() const;
258 bool isClipped() const;
259 QPainterPath clipPath() const;
260 virtual bool contains(const QPointF &point) const;
261 virtual bool collidesWithItem(const QGraphicsItem *other, Qt::ItemSelectionMode mode = Qt::IntersectsItemShape) const;
262 virtual bool collidesWithPath(const QPainterPath &path, Qt::ItemSelectionMode mode = Qt::IntersectsItemShape) const;
263 QList<QGraphicsItem *> collidingItems(Qt::ItemSelectionMode mode = Qt::IntersectsItemShape) const;
264 bool isObscured() const;
265 bool isObscured(const QRectF &rect) const; // ### Qt 5: merge with isObscured(), add QRectF arg to isObscuredBy()
266 inline bool isObscured(qreal x, qreal y, qreal w, qreal h) const;
267 virtual bool isObscuredBy(const QGraphicsItem *item) const;
268 virtual QPainterPath opaqueArea() const;
269
270 QRegion boundingRegion(const QTransform &itemToDeviceTransform) const;
271 qreal boundingRegionGranularity() const;
272 void setBoundingRegionGranularity(qreal granularity);
273
274 // Drawing
275 virtual void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0) = 0;
276 void update(const QRectF &rect = QRectF());
277 inline void update(qreal x, qreal y, qreal width, qreal height);
278 void scroll(qreal dx, qreal dy, const QRectF &rect = QRectF());
279
280 // Coordinate mapping
281 QPointF mapToItem(const QGraphicsItem *item, const QPointF &point) const;
282 QPointF mapToParent(const QPointF &point) const;
283 QPointF mapToScene(const QPointF &point) const;
284 QPolygonF mapToItem(const QGraphicsItem *item, const QRectF &rect) const;
285 QPolygonF mapToParent(const QRectF &rect) const;
286 QPolygonF mapToScene(const QRectF &rect) const;
287 QRectF mapRectToItem(const QGraphicsItem *item, const QRectF &rect) const;
288 QRectF mapRectToParent(const QRectF &rect) const;
289 QRectF mapRectToScene(const QRectF &rect) const;
290 QPolygonF mapToItem(const QGraphicsItem *item, const QPolygonF &polygon) const;
291 QPolygonF mapToParent(const QPolygonF &polygon) const;
292 QPolygonF mapToScene(const QPolygonF &polygon) const;
293 QPainterPath mapToItem(const QGraphicsItem *item, const QPainterPath &path) const;
294 QPainterPath mapToParent(const QPainterPath &path) const;
295 QPainterPath mapToScene(const QPainterPath &path) const;
296 QPointF mapFromItem(const QGraphicsItem *item, const QPointF &point) const;
297 QPointF mapFromParent(const QPointF &point) const;
298 QPointF mapFromScene(const QPointF &point) const;
299 QPolygonF mapFromItem(const QGraphicsItem *item, const QRectF &rect) const;
300 QPolygonF mapFromParent(const QRectF &rect) const;
301 QPolygonF mapFromScene(const QRectF &rect) const;
302 QRectF mapRectFromItem(const QGraphicsItem *item, const QRectF &rect) const;
303 QRectF mapRectFromParent(const QRectF &rect) const;
304 QRectF mapRectFromScene(const QRectF &rect) const;
305 QPolygonF mapFromItem(const QGraphicsItem *item, const QPolygonF &polygon) const;
306 QPolygonF mapFromParent(const QPolygonF &polygon) const;
307 QPolygonF mapFromScene(const QPolygonF &polygon) const;
308 QPainterPath mapFromItem(const QGraphicsItem *item, const QPainterPath &path) const;
309 QPainterPath mapFromParent(const QPainterPath &path) const;
310 QPainterPath mapFromScene(const QPainterPath &path) const;
311
312 inline QPointF mapToItem(const QGraphicsItem *item, qreal x, qreal y) const;
313 inline QPointF mapToParent(qreal x, qreal y) const;
314 inline QPointF mapToScene(qreal x, qreal y) const;
315 inline QPolygonF mapToItem(const QGraphicsItem *item, qreal x, qreal y, qreal w, qreal h) const;
316 inline QPolygonF mapToParent(qreal x, qreal y, qreal w, qreal h) const;
317 inline QPolygonF mapToScene(qreal x, qreal y, qreal w, qreal h) const;
318 inline QRectF mapRectToItem(const QGraphicsItem *item, qreal x, qreal y, qreal w, qreal h) const;
319 inline QRectF mapRectToParent(qreal x, qreal y, qreal w, qreal h) const;
320 inline QRectF mapRectToScene(qreal x, qreal y, qreal w, qreal h) const;
321 inline QPointF mapFromItem(const QGraphicsItem *item, qreal x, qreal y) const;
322 inline QPointF mapFromParent(qreal x, qreal y) const;
323 inline QPointF mapFromScene(qreal x, qreal y) const;
324 inline QPolygonF mapFromItem(const QGraphicsItem *item, qreal x, qreal y, qreal w, qreal h) const;
325 inline QPolygonF mapFromParent(qreal x, qreal y, qreal w, qreal h) const;
326 inline QPolygonF mapFromScene(qreal x, qreal y, qreal w, qreal h) const;
327 inline QRectF mapRectFromItem(const QGraphicsItem *item, qreal x, qreal y, qreal w, qreal h) const;
328 inline QRectF mapRectFromParent(qreal x, qreal y, qreal w, qreal h) const;
329 inline QRectF mapRectFromScene(qreal x, qreal y, qreal w, qreal h) const;
330
331 bool isAncestorOf(const QGraphicsItem *child) const;
332 QGraphicsItem *commonAncestorItem(const QGraphicsItem *other) const;
333 bool isUnderMouse() const;
334
335 // Custom data
336 QVariant data(int key) const;
337 void setData(int key, const QVariant &value);
338
339 enum {
340 Type = 1,
341 UserType = 65536
342 };
343 virtual int type() const;
344
345 void installSceneEventFilter(QGraphicsItem *filterItem);
346 void removeSceneEventFilter(QGraphicsItem *filterItem);
347
348protected:
349 virtual bool sceneEventFilter(QGraphicsItem *watched, QEvent *event);
350 virtual bool sceneEvent(QEvent *event);
351 virtual void contextMenuEvent(QGraphicsSceneContextMenuEvent *event);
352 virtual void dragEnterEvent(QGraphicsSceneDragDropEvent *event);
353 virtual void dragLeaveEvent(QGraphicsSceneDragDropEvent *event);
354 virtual void dragMoveEvent(QGraphicsSceneDragDropEvent *event);
355 virtual void dropEvent(QGraphicsSceneDragDropEvent *event);
356 virtual void focusInEvent(QFocusEvent *event);
357 virtual void focusOutEvent(QFocusEvent *event);
358 virtual void hoverEnterEvent(QGraphicsSceneHoverEvent *event);
359 virtual void hoverMoveEvent(QGraphicsSceneHoverEvent *event);
360 virtual void hoverLeaveEvent(QGraphicsSceneHoverEvent *event);
361 virtual void keyPressEvent(QKeyEvent *event);
362 virtual void keyReleaseEvent(QKeyEvent *event);
363 virtual void mousePressEvent(QGraphicsSceneMouseEvent *event);
364 virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
365 virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
366 virtual void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event);
367 virtual void wheelEvent(QGraphicsSceneWheelEvent *event);
368 virtual void inputMethodEvent(QInputMethodEvent *event);
369 virtual QVariant inputMethodQuery(Qt::InputMethodQuery query) const;
370
371 virtual QVariant itemChange(GraphicsItemChange change, const QVariant &value);
372
373 enum Extension {
374 UserExtension = 0x80000000
375 };
376 virtual bool supportsExtension(Extension extension) const;
377 virtual void setExtension(Extension extension, const QVariant &variant);
378 virtual QVariant extension(const QVariant &variant) const;
379
380protected:
381 QGraphicsItem(QGraphicsItemPrivate &dd,
382 QGraphicsItem *parent, QGraphicsScene *scene);
383 QGraphicsItemPrivate *d_ptr;
384
385 void addToIndex();
386 void removeFromIndex();
387 void prepareGeometryChange();
388
389private:
390 Q_DISABLE_COPY(QGraphicsItem)
391 Q_DECLARE_PRIVATE(QGraphicsItem)
392 friend class QGraphicsItemGroup;
393 friend class QGraphicsScene;
394 friend class QGraphicsScenePrivate;
395 friend class QGraphicsSceneFindItemBspTreeVisitor;
396 friend class QGraphicsView;
397 friend class QGraphicsViewPrivate;
398 friend class QGraphicsWidget;
399 friend class QGraphicsWidgetPrivate;
400 friend class QGraphicsProxyWidgetPrivate;
401 friend class ::tst_QGraphicsItem;
402 friend bool qt_closestLeaf(const QGraphicsItem *, const QGraphicsItem *);
403 friend bool qt_closestItemFirst(const QGraphicsItem *, const QGraphicsItem *);
404};
405
406Q_DECLARE_OPERATORS_FOR_FLAGS(QGraphicsItem::GraphicsItemFlags)
407
408inline void QGraphicsItem::setPos(qreal ax, qreal ay)
409{ setPos(QPointF(ax, ay)); }
410inline void QGraphicsItem::ensureVisible(qreal ax, qreal ay, qreal w, qreal h, int xmargin, int ymargin)
411{ ensureVisible(QRectF(ax, ay, w, h), xmargin, ymargin); }
412inline void QGraphicsItem::update(qreal ax, qreal ay, qreal width, qreal height)
413{ update(QRectF(ax, ay, width, height)); }
414inline bool QGraphicsItem::isObscured(qreal ax, qreal ay, qreal w, qreal h) const
415{ return isObscured(QRectF(ax, ay, w, h)); }
416inline QPointF QGraphicsItem::mapToItem(const QGraphicsItem *item, qreal ax, qreal ay) const
417{ return mapToItem(item, QPointF(ax, ay)); }
418inline QPointF QGraphicsItem::mapToParent(qreal ax, qreal ay) const
419{ return mapToParent(QPointF(ax, ay)); }
420inline QPointF QGraphicsItem::mapToScene(qreal ax, qreal ay) const
421{ return mapToScene(QPointF(ax, ay)); }
422inline QPointF QGraphicsItem::mapFromItem(const QGraphicsItem *item, qreal ax, qreal ay) const
423{ return mapFromItem(item, QPointF(ax, ay)); }
424inline QPointF QGraphicsItem::mapFromParent(qreal ax, qreal ay) const
425{ return mapFromParent(QPointF(ax, ay)); }
426inline QPointF QGraphicsItem::mapFromScene(qreal ax, qreal ay) const
427{ return mapFromScene(QPointF(ax, ay)); }
428inline QPolygonF QGraphicsItem::mapToItem(const QGraphicsItem *item, qreal ax, qreal ay, qreal w, qreal h) const
429{ return mapToItem(item, QRectF(ax, ay, w, h)); }
430inline QPolygonF QGraphicsItem::mapToParent(qreal ax, qreal ay, qreal w, qreal h) const
431{ return mapToParent(QRectF(ax, ay, w, h)); }
432inline QPolygonF QGraphicsItem::mapToScene(qreal ax, qreal ay, qreal w, qreal h) const
433{ return mapToScene(QRectF(ax, ay, w, h)); }
434inline QRectF QGraphicsItem::mapRectToItem(const QGraphicsItem *item, qreal ax, qreal ay, qreal w, qreal h) const
435{ return mapRectToItem(item, QRectF(ax, ay, w, h)); }
436inline QRectF QGraphicsItem::mapRectToParent(qreal ax, qreal ay, qreal w, qreal h) const
437{ return mapRectToParent(QRectF(ax, ay, w, h)); }
438inline QRectF QGraphicsItem::mapRectToScene(qreal ax, qreal ay, qreal w, qreal h) const
439{ return mapRectToScene(QRectF(ax, ay, w, h)); }
440inline QPolygonF QGraphicsItem::mapFromItem(const QGraphicsItem *item, qreal ax, qreal ay, qreal w, qreal h) const
441{ return mapFromItem(item, QRectF(ax, ay, w, h)); }
442inline QPolygonF QGraphicsItem::mapFromParent(qreal ax, qreal ay, qreal w, qreal h) const
443{ return mapFromParent(QRectF(ax, ay, w, h)); }
444inline QPolygonF QGraphicsItem::mapFromScene(qreal ax, qreal ay, qreal w, qreal h) const
445{ return mapFromScene(QRectF(ax, ay, w, h)); }
446inline QRectF QGraphicsItem::mapRectFromItem(const QGraphicsItem *item, qreal ax, qreal ay, qreal w, qreal h) const
447{ return mapRectFromItem(item, QRectF(ax, ay, w, h)); }
448inline QRectF QGraphicsItem::mapRectFromParent(qreal ax, qreal ay, qreal w, qreal h) const
449{ return mapRectFromParent(QRectF(ax, ay, w, h)); }
450inline QRectF QGraphicsItem::mapRectFromScene(qreal ax, qreal ay, qreal w, qreal h) const
451{ return mapRectFromScene(QRectF(ax, ay, w, h)); }
452
453class QAbstractGraphicsShapeItemPrivate;
454class Q_GUI_EXPORT QAbstractGraphicsShapeItem : public QGraphicsItem
455{
456public:
457 QAbstractGraphicsShapeItem(QGraphicsItem *parent = 0
458#ifndef Q_QDOC
459 // obsolete argument
460 , QGraphicsScene *scene = 0
461#endif
462 );
463 ~QAbstractGraphicsShapeItem();
464
465 QPen pen() const;
466 void setPen(const QPen &pen);
467
468 QBrush brush() const;
469 void setBrush(const QBrush &brush);
470
471 bool isObscuredBy(const QGraphicsItem *item) const;
472 QPainterPath opaqueArea() const;
473
474protected:
475 QAbstractGraphicsShapeItem(QAbstractGraphicsShapeItemPrivate &dd,
476 QGraphicsItem *parent, QGraphicsScene *scene);
477
478private:
479 Q_DISABLE_COPY(QAbstractGraphicsShapeItem)
480 Q_DECLARE_PRIVATE(QAbstractGraphicsShapeItem)
481};
482
483class QGraphicsPathItemPrivate;
484class Q_GUI_EXPORT QGraphicsPathItem : public QAbstractGraphicsShapeItem
485{
486public:
487 QGraphicsPathItem(QGraphicsItem *parent = 0
488#ifndef Q_QDOC
489 // obsolete argument
490 , QGraphicsScene *scene = 0
491#endif
492 );
493 QGraphicsPathItem(const QPainterPath &path, QGraphicsItem *parent = 0
494#ifndef Q_QDOC
495 // obsolete argument
496 , QGraphicsScene *scene = 0
497#endif
498 );
499 ~QGraphicsPathItem();
500
501 QPainterPath path() const;
502 void setPath(const QPainterPath &path);
503
504 QRectF boundingRect() const;
505 QPainterPath shape() const;
506 bool contains(const QPointF &point) const;
507
508 void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);
509
510 bool isObscuredBy(const QGraphicsItem *item) const;
511 QPainterPath opaqueArea() const;
512
513 enum { Type = 2 };
514 int type() const;
515
516protected:
517 bool supportsExtension(Extension extension) const;
518 void setExtension(Extension extension, const QVariant &variant);
519 QVariant extension(const QVariant &variant) const;
520
521private:
522 Q_DISABLE_COPY(QGraphicsPathItem)
523 Q_DECLARE_PRIVATE(QGraphicsPathItem)
524};
525
526class QGraphicsRectItemPrivate;
527class Q_GUI_EXPORT QGraphicsRectItem : public QAbstractGraphicsShapeItem
528{
529public:
530 QGraphicsRectItem(QGraphicsItem *parent = 0
531#ifndef Q_QDOC
532 // obsolete argument
533 , QGraphicsScene *scene = 0
534#endif
535 );
536 QGraphicsRectItem(const QRectF &rect, QGraphicsItem *parent = 0
537#ifndef Q_QDOC
538 // obsolete argument
539 , QGraphicsScene *scene = 0
540#endif
541 );
542 QGraphicsRectItem(qreal x, qreal y, qreal w, qreal h, QGraphicsItem *parent = 0
543#ifndef Q_QDOC
544 // obsolete argument
545 , QGraphicsScene *scene = 0
546#endif
547 );
548 ~QGraphicsRectItem();
549
550 QRectF rect() const;
551 void setRect(const QRectF &rect);
552 inline void setRect(qreal x, qreal y, qreal w, qreal h);
553
554 QRectF boundingRect() const;
555 QPainterPath shape() const;
556 bool contains(const QPointF &point) const;
557
558 void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);
559
560 bool isObscuredBy(const QGraphicsItem *item) const;
561 QPainterPath opaqueArea() const;
562
563 enum { Type = 3 };
564 int type() const;
565
566protected:
567 bool supportsExtension(Extension extension) const;
568 void setExtension(Extension extension, const QVariant &variant);
569 QVariant extension(const QVariant &variant) const;
570
571private:
572 Q_DISABLE_COPY(QGraphicsRectItem)
573 Q_DECLARE_PRIVATE(QGraphicsRectItem)
574};
575
576inline void QGraphicsRectItem::setRect(qreal ax, qreal ay, qreal w, qreal h)
577{ setRect(QRectF(ax, ay, w, h)); }
578
579class QGraphicsEllipseItemPrivate;
580class Q_GUI_EXPORT QGraphicsEllipseItem : public QAbstractGraphicsShapeItem
581{
582public:
583 QGraphicsEllipseItem(QGraphicsItem *parent = 0
584#ifndef Q_QDOC
585 // obsolete argument
586 , QGraphicsScene *scene = 0
587#endif
588 );
589 QGraphicsEllipseItem(const QRectF &rect, QGraphicsItem *parent = 0
590#ifndef Q_QDOC
591 // obsolete argument
592 , QGraphicsScene *scene = 0
593#endif
594 );
595 QGraphicsEllipseItem(qreal x, qreal y, qreal w, qreal h, QGraphicsItem *parent = 0
596#ifndef Q_QDOC
597 // obsolete argument
598 , QGraphicsScene *scene = 0
599#endif
600 );
601 ~QGraphicsEllipseItem();
602
603 QRectF rect() const;
604 void setRect(const QRectF &rect);
605 inline void setRect(qreal x, qreal y, qreal w, qreal h);
606
607 int startAngle() const;
608 void setStartAngle(int angle);
609
610 int spanAngle() const;
611 void setSpanAngle(int angle);
612
613 QRectF boundingRect() const;
614 QPainterPath shape() const;
615 bool contains(const QPointF &point) const;
616
617 void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);
618
619 bool isObscuredBy(const QGraphicsItem *item) const;
620 QPainterPath opaqueArea() const;
621
622 enum { Type = 4 };
623 int type() const;
624
625protected:
626 bool supportsExtension(Extension extension) const;
627 void setExtension(Extension extension, const QVariant &variant);
628 QVariant extension(const QVariant &variant) const;
629
630private:
631 Q_DISABLE_COPY(QGraphicsEllipseItem)
632 Q_DECLARE_PRIVATE(QGraphicsEllipseItem)
633};
634
635inline void QGraphicsEllipseItem::setRect(qreal ax, qreal ay, qreal w, qreal h)
636{ setRect(QRectF(ax, ay, w, h)); }
637
638class QGraphicsPolygonItemPrivate;
639class Q_GUI_EXPORT QGraphicsPolygonItem : public QAbstractGraphicsShapeItem
640{
641public:
642 QGraphicsPolygonItem(QGraphicsItem *parent = 0
643#ifndef Q_QDOC
644 // obsolete argument
645 , QGraphicsScene *scene = 0
646#endif
647 );
648 QGraphicsPolygonItem(const QPolygonF &polygon,
649 QGraphicsItem *parent = 0
650#ifndef Q_QDOC
651 // obsolete argument
652 , QGraphicsScene *scene = 0
653#endif
654 );
655 ~QGraphicsPolygonItem();
656
657 QPolygonF polygon() const;
658 void setPolygon(const QPolygonF &polygon);
659
660 Qt::FillRule fillRule() const;
661 void setFillRule(Qt::FillRule rule);
662
663 QRectF boundingRect() const;
664 QPainterPath shape() const;
665 bool contains(const QPointF &point) const;
666
667 void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);
668
669 bool isObscuredBy(const QGraphicsItem *item) const;
670 QPainterPath opaqueArea() const;
671
672 enum { Type = 5 };
673 int type() const;
674
675protected:
676 bool supportsExtension(Extension extension) const;
677 void setExtension(Extension extension, const QVariant &variant);
678 QVariant extension(const QVariant &variant) const;
679
680private:
681 Q_DISABLE_COPY(QGraphicsPolygonItem)
682 Q_DECLARE_PRIVATE(QGraphicsPolygonItem)
683};
684
685class QGraphicsLineItemPrivate;
686class Q_GUI_EXPORT QGraphicsLineItem : public QGraphicsItem
687{
688public:
689 QGraphicsLineItem(QGraphicsItem *parent = 0
690#ifndef Q_QDOC
691 // obsolete argument
692 , QGraphicsScene *scene = 0
693#endif
694 );
695 QGraphicsLineItem(const QLineF &line, QGraphicsItem *parent = 0
696#ifndef Q_QDOC
697 // obsolete argument
698 , QGraphicsScene *scene = 0
699#endif
700 );
701 QGraphicsLineItem(qreal x1, qreal y1, qreal x2, qreal y2, QGraphicsItem *parent = 0
702#ifndef Q_QDOC
703 // obsolete argument
704 , QGraphicsScene *scene = 0
705#endif
706 );
707 ~QGraphicsLineItem();
708
709 QPen pen() const;
710 void setPen(const QPen &pen);
711
712 QLineF line() const;
713 void setLine(const QLineF &line);
714 inline void setLine(qreal x1, qreal y1, qreal x2, qreal y2)
715 { setLine(QLineF(x1, y1, x2, y2)); }
716
717 QRectF boundingRect() const;
718 QPainterPath shape() const;
719 bool contains(const QPointF &point) const;
720
721 void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);
722
723 bool isObscuredBy(const QGraphicsItem *item) const;
724 QPainterPath opaqueArea() const;
725
726 enum { Type = 6 };
727 int type() const;
728
729protected:
730 bool supportsExtension(Extension extension) const;
731 void setExtension(Extension extension, const QVariant &variant);
732 QVariant extension(const QVariant &variant) const;
733
734private:
735 Q_DISABLE_COPY(QGraphicsLineItem)
736 Q_DECLARE_PRIVATE(QGraphicsLineItem)
737};
738
739class QGraphicsPixmapItemPrivate;
740class Q_GUI_EXPORT QGraphicsPixmapItem : public QGraphicsItem
741{
742public:
743 enum ShapeMode {
744 MaskShape,
745 BoundingRectShape,
746 HeuristicMaskShape
747 };
748
749 QGraphicsPixmapItem(QGraphicsItem *parent = 0
750#ifndef Q_QDOC
751 // obsolete argument
752 , QGraphicsScene *scene = 0
753#endif
754 );
755 QGraphicsPixmapItem(const QPixmap &pixmap, QGraphicsItem *parent = 0
756#ifndef Q_QDOC
757 // obsolete argument
758 , QGraphicsScene *scene = 0
759#endif
760 );
761 ~QGraphicsPixmapItem();
762
763 QPixmap pixmap() const;
764 void setPixmap(const QPixmap &pixmap);
765
766 Qt::TransformationMode transformationMode() const;
767 void setTransformationMode(Qt::TransformationMode mode);
768
769 QPointF offset() const;
770 void setOffset(const QPointF &offset);
771 inline void setOffset(qreal x, qreal y);
772
773 QRectF boundingRect() const;
774 QPainterPath shape() const;
775 bool contains(const QPointF &point) const;
776
777 void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
778
779 bool isObscuredBy(const QGraphicsItem *item) const;
780 QPainterPath opaqueArea() const;
781
782 enum { Type = 7 };
783 int type() const;
784
785 ShapeMode shapeMode() const;
786 void setShapeMode(ShapeMode mode);
787
788protected:
789 bool supportsExtension(Extension extension) const;
790 void setExtension(Extension extension, const QVariant &variant);
791 QVariant extension(const QVariant &variant) const;
792
793private:
794 Q_DISABLE_COPY(QGraphicsPixmapItem)
795 Q_DECLARE_PRIVATE(QGraphicsPixmapItem)
796};
797
798inline void QGraphicsPixmapItem::setOffset(qreal ax, qreal ay)
799{ setOffset(QPointF(ax, ay)); }
800
801class QGraphicsTextItemPrivate;
802class QTextDocument;
803class QTextCursor;
804class Q_GUI_EXPORT QGraphicsTextItem : public QObject, public QGraphicsItem
805{
806 Q_OBJECT
807 QDOC_PROPERTY(bool openExternalLinks READ openExternalLinks WRITE setOpenExternalLinks)
808 QDOC_PROPERTY(QTextCursor textCursor READ textCursor WRITE setTextCursor)
809
810public:
811 QGraphicsTextItem(QGraphicsItem *parent = 0
812#ifndef Q_QDOC
813 // obsolete argument
814 , QGraphicsScene *scene = 0
815#endif
816 );
817 QGraphicsTextItem(const QString &text, QGraphicsItem *parent = 0
818#ifndef Q_QDOC
819 // obsolete argument
820 , QGraphicsScene *scene = 0
821#endif
822 );
823 ~QGraphicsTextItem();
824
825 QString toHtml() const;
826 void setHtml(const QString &html);
827
828 QString toPlainText() const;
829 void setPlainText(const QString &text);
830
831 QFont font() const;
832 void setFont(const QFont &font);
833
834 void setDefaultTextColor(const QColor &c);
835 QColor defaultTextColor() const;
836
837 QRectF boundingRect() const;
838 QPainterPath shape() const;
839 bool contains(const QPointF &point) const;
840
841 void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
842
843 bool isObscuredBy(const QGraphicsItem *item) const;
844 QPainterPath opaqueArea() const;
845
846 enum { Type = 8 };
847 int type() const;
848
849 void setTextWidth(qreal width);
850 qreal textWidth() const;
851
852 void adjustSize();
853
854 void setDocument(QTextDocument *document);
855 QTextDocument *document() const;
856
857 void setTextInteractionFlags(Qt::TextInteractionFlags flags);
858 Qt::TextInteractionFlags textInteractionFlags() const;
859
860 void setTabChangesFocus(bool b);
861 bool tabChangesFocus() const;
862
863 void setOpenExternalLinks(bool open);
864 bool openExternalLinks() const;
865
866 void setTextCursor(const QTextCursor &cursor);
867 QTextCursor textCursor() const;
868
869Q_SIGNALS:
870 void linkActivated(const QString &);
871 void linkHovered(const QString &);
872
873protected:
874 bool sceneEvent(QEvent *event);
875 void mousePressEvent(QGraphicsSceneMouseEvent *event);
876 void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
877 void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
878 void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event);
879 void contextMenuEvent(QGraphicsSceneContextMenuEvent *event);
880 void keyPressEvent(QKeyEvent *event);
881 void keyReleaseEvent(QKeyEvent *event);
882 void focusInEvent(QFocusEvent *event);
883 void focusOutEvent(QFocusEvent *event);
884 void dragEnterEvent(QGraphicsSceneDragDropEvent *event);
885 void dragLeaveEvent(QGraphicsSceneDragDropEvent *event);
886 void dragMoveEvent(QGraphicsSceneDragDropEvent *event);
887 void dropEvent(QGraphicsSceneDragDropEvent *event);
888 void inputMethodEvent(QInputMethodEvent *event);
889 void hoverEnterEvent(QGraphicsSceneHoverEvent *event);
890 void hoverMoveEvent(QGraphicsSceneHoverEvent *event);
891 void hoverLeaveEvent(QGraphicsSceneHoverEvent *event);
892
893 QVariant inputMethodQuery(Qt::InputMethodQuery query) const;
894
895 bool supportsExtension(Extension extension) const;
896 void setExtension(Extension extension, const QVariant &variant);
897 QVariant extension(const QVariant &variant) const;
898
899private:
900 Q_DISABLE_COPY(QGraphicsTextItem)
901 Q_PRIVATE_SLOT(dd, void _q_updateBoundingRect(const QSizeF &))
902 Q_PRIVATE_SLOT(dd, void _q_update(QRectF))
903 Q_PRIVATE_SLOT(dd, void _q_ensureVisible(QRectF))
904 QGraphicsTextItemPrivate *dd;
905 friend class QGraphicsTextItemPrivate;
906};
907
908class QGraphicsSimpleTextItemPrivate;
909class Q_GUI_EXPORT QGraphicsSimpleTextItem : public QAbstractGraphicsShapeItem
910{
911public:
912 QGraphicsSimpleTextItem(QGraphicsItem *parent = 0
913#ifndef Q_QDOC
914 // obsolete argument
915 , QGraphicsScene *scene = 0
916#endif
917 );
918 QGraphicsSimpleTextItem(const QString &text, QGraphicsItem *parent = 0
919#ifndef Q_QDOC
920 // obsolete argument
921 , QGraphicsScene *scene = 0
922#endif
923 );
924 ~QGraphicsSimpleTextItem();
925
926 void setText(const QString &text);
927 QString text() const;
928
929 void setFont(const QFont &font);
930 QFont font() const;
931
932 QRectF boundingRect() const;
933 QPainterPath shape() const;
934 bool contains(const QPointF &point) const;
935
936 void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
937
938 bool isObscuredBy(const QGraphicsItem *item) const;
939 QPainterPath opaqueArea() const;
940
941 enum { Type = 9 };
942 int type() const;
943
944protected:
945 bool supportsExtension(Extension extension) const;
946 void setExtension(Extension extension, const QVariant &variant);
947 QVariant extension(const QVariant &variant) const;
948
949private:
950 Q_DISABLE_COPY(QGraphicsSimpleTextItem)
951 Q_DECLARE_PRIVATE(QGraphicsSimpleTextItem)
952};
953
954class QGraphicsItemGroupPrivate;
955class Q_GUI_EXPORT QGraphicsItemGroup : public QGraphicsItem
956{
957public:
958 QGraphicsItemGroup(QGraphicsItem *parent = 0
959#ifndef Q_QDOC
960 // obsolete argument
961 , QGraphicsScene *scene = 0
962#endif
963 );
964 ~QGraphicsItemGroup();
965
966 void addToGroup(QGraphicsItem *item);
967 void removeFromGroup(QGraphicsItem *item);
968
969 QRectF boundingRect() const;
970 void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);
971
972 bool isObscuredBy(const QGraphicsItem *item) const;
973 QPainterPath opaqueArea() const;
974
975 enum { Type = 10 };
976 int type() const;
977
978private:
979 Q_DISABLE_COPY(QGraphicsItemGroup)
980 Q_DECLARE_PRIVATE(QGraphicsItemGroup)
981};
982
983template <class T> inline T qgraphicsitem_cast(QGraphicsItem *item)
984{
985 return int(static_cast<T>(0)->Type) == int(QGraphicsItem::Type)
986 || (item && int(static_cast<T>(0)->Type) == item->type()) ? static_cast<T>(item) : 0;
987}
988
989template <class T> inline T qgraphicsitem_cast(const QGraphicsItem *item)
990{
991 return int(static_cast<T>(0)->Type) == int(QGraphicsItem::Type)
992 || (item && int(static_cast<T>(0)->Type) == item->type()) ? static_cast<T>(item) : 0;
993}
994
995#ifndef QT_NO_DEBUG_STREAM
996Q_GUI_EXPORT QDebug operator<<(QDebug debug, QGraphicsItem *item);
997Q_GUI_EXPORT QDebug operator<<(QDebug debug, QGraphicsItem::GraphicsItemChange change);
998Q_GUI_EXPORT QDebug operator<<(QDebug debug, QGraphicsItem::GraphicsItemFlag flag);
999Q_GUI_EXPORT QDebug operator<<(QDebug debug, QGraphicsItem::GraphicsItemFlags flags);
1000#endif
1001
1002QT_END_NAMESPACE
1003
1004Q_DECLARE_METATYPE(QGraphicsItem *)
1005Q_DECLARE_METATYPE(QGraphicsScene *)
1006
1007QT_BEGIN_NAMESPACE
1008
1009#endif // QT_NO_GRAPHICSVIEW
1010
1011QT_END_NAMESPACE
1012
1013QT_END_HEADER
1014
1015#endif // QGRAPHICSITEM_H
1016
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