1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
| #ifndef QGRAPHICSSCENE_H
#define QGRAPHICSSCENE_H
#include <QtWidgets/qtwidgetsglobal.h>
#include <QtCore/qobject.h>
#include <QtCore/qpoint.h>
#include <QtCore/qrect.h>
#include <QtGui/qbrush.h>
#include <QtGui/qfont.h>
#include <QtGui/qtransform.h>
#include <QtGui/qpen.h>
QT_REQUIRE_CONFIG(graphicsview);
QT_BEGIN_NAMESPACE
template<typename T> class QList;
class QFocusEvent;
class QFont;
class QFontMetrics;
class QGraphicsEllipseItem;
class QGraphicsItem;
class QGraphicsItemGroup;
class QGraphicsLineItem;
class QGraphicsPathItem;
class QGraphicsPixmapItem;
class QGraphicsPolygonItem;
class QGraphicsProxyWidget;
class QGraphicsRectItem;
class QGraphicsSceneContextMenuEvent;
class QGraphicsSceneDragDropEvent;
class QGraphicsSceneEvent;
class QGraphicsSceneHelpEvent;
class QGraphicsSceneHoverEvent;
class QGraphicsSceneMouseEvent;
class QGraphicsSceneWheelEvent;
class QGraphicsSimpleTextItem;
class QGraphicsTextItem;
class QGraphicsView;
class QGraphicsWidget;
class QGraphicsSceneIndex;
class QHelpEvent;
class QInputMethodEvent;
class QKeyEvent;
class QLineF;
class QPainterPath;
class QPixmap;
class QPointF;
class QPolygonF;
class QRectF;
class QSizeF;
class QStyle;
class QStyleOptionGraphicsItem;
class QGraphicsScenePrivate;
class Q_WIDGETS_EXPORT QGraphicsScene : public QObject
{
Q_OBJECT
Q_PROPERTY(QBrush backgroundBrush READ backgroundBrush WRITE setBackgroundBrush)
Q_PROPERTY(QBrush foregroundBrush READ foregroundBrush WRITE setForegroundBrush)
Q_PROPERTY(ItemIndexMethod itemIndexMethod READ itemIndexMethod WRITE setItemIndexMethod)
Q_PROPERTY(QRectF sceneRect READ sceneRect WRITE setSceneRect)
Q_PROPERTY(int bspTreeDepth READ bspTreeDepth WRITE setBspTreeDepth)
Q_PROPERTY(QPalette palette READ palette WRITE setPalette)
Q_PROPERTY(QFont font READ font WRITE setFont)
#if QT_DEPRECATED_SINCE(5, 13)
Q_PROPERTY(bool sortCacheEnabled READ isSortCacheEnabled WRITE setSortCacheEnabled)
#endif
Q_PROPERTY(bool stickyFocus READ stickyFocus WRITE setStickyFocus)
Q_PROPERTY(qreal minimumRenderSize READ minimumRenderSize WRITE setMinimumRenderSize)
Q_PROPERTY(bool focusOnTouch READ focusOnTouch WRITE setFocusOnTouch)
public:
enum ItemIndexMethod {
BspTreeIndex,
NoIndex = -1
};
Q_ENUM(ItemIndexMethod)
enum SceneLayer {
ItemLayer = 0x1,
BackgroundLayer = 0x2,
ForegroundLayer = 0x4,
AllLayers = 0xffff
};
Q_DECLARE_FLAGS(SceneLayers, SceneLayer)
QGraphicsScene(QObject *parent = nullptr);
QGraphicsScene(const QRectF &sceneRect, QObject *parent = nullptr);
QGraphicsScene(qreal x, qreal y, qreal width, qreal height, QObject *parent = nullptr);
virtual ~QGraphicsScene();
QRectF sceneRect() const;
inline qreal width() const { return sceneRect().width(); }
inline qreal height() const { return sceneRect().height(); }
void setSceneRect(const QRectF &rect);
inline void setSceneRect(qreal x, qreal y, qreal w, qreal h)
{ setSceneRect(QRectF(x, y, w, h)); }
void render(QPainter *painter,
const QRectF &target = QRectF(), const QRectF &source = QRectF(),
Qt::AspectRatioMode aspectRatioMode = Qt::KeepAspectRatio);
ItemIndexMethod itemIndexMethod() const;
void setItemIndexMethod(ItemIndexMethod method);
#if QT_DEPRECATED_SINCE(5, 13)
QT_DEPRECATED bool isSortCacheEnabled() const;
QT_DEPRECATED void setSortCacheEnabled(bool enabled);
#endif
int bspTreeDepth() const;
void setBspTreeDepth(int depth);
QRectF itemsBoundingRect() const;
QList<QGraphicsItem *> items(Qt::SortOrder order = Qt::DescendingOrder) const;
QList<QGraphicsItem *> items(const QPointF &pos, Qt::ItemSelectionMode mode = Qt::IntersectsItemShape, Qt::SortOrder order = Qt::DescendingOrder, const QTransform &deviceTransform = QTransform()) const;
QList<QGraphicsItem *> items(const QRectF &rect, Qt::ItemSelectionMode mode = Qt::IntersectsItemShape, Qt::SortOrder order = Qt::DescendingOrder, const QTransform &deviceTransform = QTransform()) const;
QList<QGraphicsItem *> items(const QPolygonF &polygon, Qt::ItemSelectionMode mode = Qt::IntersectsItemShape, Qt::SortOrder order = Qt::DescendingOrder, const QTransform &deviceTransform = QTransform()) const;
QList<QGraphicsItem *> items(const QPainterPath &path, Qt::ItemSelectionMode mode = Qt::IntersectsItemShape, Qt::SortOrder order = Qt::DescendingOrder, const QTransform &deviceTransform = QTransform()) const;
QList<QGraphicsItem *> collidingItems(const QGraphicsItem *item, Qt::ItemSelectionMode mode = Qt::IntersectsItemShape) const;
#if QT_DEPRECATED_SINCE(5, 0)
QT_DEPRECATED inline QGraphicsItem *itemAt(const QPointF &position) const {
QList<QGraphicsItem *> itemsAtPoint = items(position);
return itemsAtPoint.isEmpty() ? nullptr : itemsAtPoint.first();
}
#endif
QGraphicsItem *itemAt(const QPointF &pos, const QTransform &deviceTransform) const;
#if QT_DEPRECATED_SINCE(5, 0)
QT_DEPRECATED inline QList<QGraphicsItem *> items(qreal x, qreal y, qreal w, qreal h, Qt::ItemSelectionMode mode = Qt::IntersectsItemShape) const
{ return items(QRectF(x, y, w, h), mode); }
#endif
inline QList<QGraphicsItem *> items(qreal x, qreal y, qreal w, qreal h, Qt::ItemSelectionMode mode, Qt::SortOrder order,
const QTransform &deviceTransform = QTransform()) const
{ return items(QRectF(x, y, w, h), mode, order, deviceTransform); }
#if QT_DEPRECATED_SINCE(5, 0)
QT_DEPRECATED inline QGraphicsItem *itemAt(qreal x, qreal y) const {
QList<QGraphicsItem *> itemsAtPoint = items(QPointF(x, y));
return itemsAtPoint.isEmpty() ? nullptr : itemsAtPoint.first();
}
#endif
inline QGraphicsItem *itemAt(qreal x, qreal y, const QTransform &deviceTransform) const
{ return itemAt(QPointF(x, y), deviceTransform); }
QList<QGraphicsItem *> selectedItems() const;
QPainterPath selectionArea() const;
void setSelectionArea(const QPainterPath &path, const QTransform &deviceTransform);
void setSelectionArea(const QPainterPath &path, Qt::ItemSelectionMode mode = Qt::IntersectsItemShape, const QTransform &deviceTransform = QTransform());
void setSelectionArea(const QPainterPath &path, Qt::ItemSelectionOperation selectionOperation, Qt::ItemSelectionMode mode = Qt::IntersectsItemShape, const QTransform &deviceTransform = QTransform());
QGraphicsItemGroup *createItemGroup(const QList<QGraphicsItem *> &items);
void destroyItemGroup(QGraphicsItemGroup *group);
void addItem(QGraphicsItem *item);
QGraphicsEllipseItem *addEllipse(const QRectF &rect, const QPen &pen = QPen(), const QBrush &brush = QBrush());
QGraphicsLineItem *addLine(const QLineF &line, const QPen &pen = QPen());
QGraphicsPathItem *addPath(const QPainterPath &path, const QPen &pen = QPen(), const QBrush &brush = QBrush());
QGraphicsPixmapItem *addPixmap(const QPixmap &pixmap);
QGraphicsPolygonItem *addPolygon(const QPolygonF &polygon, const QPen &pen = QPen(), const QBrush &brush = QBrush());
QGraphicsRectItem *addRect(const QRectF &rect, const QPen &pen = QPen(), const QBrush &brush = QBrush());
QGraphicsTextItem *addText(const QString &text, const QFont &font = QFont());
QGraphicsSimpleTextItem *addSimpleText(const QString &text, const QFont &font = QFont());
QGraphicsProxyWidget *addWidget(QWidget *widget, Qt::WindowFlags wFlags = Qt::WindowFlags());
inline QGraphicsEllipseItem *addEllipse(qreal x, qreal y, qreal w, qreal h, const QPen &pen = QPen(), const QBrush &brush = QBrush())
{ return addEllipse(QRectF(x, y, w, h), pen, brush); }
inline QGraphicsLineItem *addLine(qreal x1, qreal y1, qreal x2, qreal y2, const QPen &pen = QPen())
{ return addLine(QLineF(x1, y1, x2, y2), pen); }
inline QGraphicsRectItem *addRect(qreal x, qreal y, qreal w, qreal h, const QPen &pen = QPen(), const QBrush &brush = QBrush())
{ return addRect(QRectF(x, y, w, h), pen, brush); }
void removeItem(QGraphicsItem *item);
QGraphicsItem *focusItem() const;
void setFocusItem(QGraphicsItem *item, Qt::FocusReason focusReason = Qt::OtherFocusReason);
bool hasFocus() const;
void setFocus(Qt::FocusReason focusReason = Qt::OtherFocusReason);
void clearFocus();
void setStickyFocus(bool enabled);
bool stickyFocus() const;
QGraphicsItem *mouseGrabberItem() const;
QBrush backgroundBrush() const;
void setBackgroundBrush(const QBrush &brush);
QBrush foregroundBrush() const;
void setForegroundBrush(const QBrush &brush);
virtual QVariant inputMethodQuery(Qt::InputMethodQuery query) const;
QList <QGraphicsView *> views() const;
inline void update(qreal x, qreal y, qreal w, qreal h)
{ update(QRectF(x, y, w, h)); }
inline void invalidate(qreal x, qreal y, qreal w, qreal h, SceneLayers layers = AllLayers)
{ invalidate(QRectF(x, y, w, h), layers); }
QStyle *style() const;
void setStyle(QStyle *style);
QFont font() const;
void setFont(const QFont &font);
QPalette palette() const;
void setPalette(const QPalette &palette);
bool isActive() const;
QGraphicsItem *activePanel() const;
void setActivePanel(QGraphicsItem *item);
QGraphicsWidget *activeWindow() const;
void setActiveWindow(QGraphicsWidget *widget);
bool sendEvent(QGraphicsItem *item, QEvent *event);
qreal minimumRenderSize() const;
void setMinimumRenderSize(qreal minSize);
bool focusOnTouch() const;
void setFocusOnTouch(bool enabled);
public Q_SLOTS:
void update(const QRectF &rect = QRectF());
void invalidate(const QRectF &rect = QRectF(), SceneLayers layers = AllLayers);
void advance();
void clearSelection();
void clear();
protected:
bool event(QEvent *event) override;
bool eventFilter(QObject *watched, QEvent *event) override;
virtual void contextMenuEvent(QGraphicsSceneContextMenuEvent *event);
virtual void dragEnterEvent(QGraphicsSceneDragDropEvent *event);
virtual void dragMoveEvent(QGraphicsSceneDragDropEvent *event);
virtual void dragLeaveEvent(QGraphicsSceneDragDropEvent *event);
virtual void dropEvent(QGraphicsSceneDragDropEvent *event);
virtual void focusInEvent(QFocusEvent *event);
virtual void focusOutEvent(QFocusEvent *event);
virtual void helpEvent(QGraphicsSceneHelpEvent *event);
virtual void keyPressEvent(QKeyEvent *event);
virtual void keyReleaseEvent(QKeyEvent *event);
virtual void mousePressEvent(QGraphicsSceneMouseEvent *event);
virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
virtual void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event);
virtual void wheelEvent(QGraphicsSceneWheelEvent *event);
virtual void inputMethodEvent(QInputMethodEvent *event);
virtual void drawBackground(QPainter *painter, const QRectF &rect);
virtual void drawForeground(QPainter *painter, const QRectF &rect);
virtual void drawItems(QPainter *painter, int numItems,
QGraphicsItem *items[],
const QStyleOptionGraphicsItem options[],
QWidget *widget = nullptr);
protected Q_SLOTS:
QT6_VIRTUAL bool focusNextPrevChild(bool next);
Q_SIGNALS:
void changed(const QList<QRectF> ®ion);
void sceneRectChanged(const QRectF &rect);
void selectionChanged();
void focusItemChanged(QGraphicsItem *newFocus, QGraphicsItem *oldFocus, Qt::FocusReason reason);
private:
Q_DECLARE_PRIVATE(QGraphicsScene)
Q_DISABLE_COPY(QGraphicsScene)
Q_PRIVATE_SLOT(d_func(), void _q_emitUpdated())
Q_PRIVATE_SLOT(d_func(), void _q_polishItems())
Q_PRIVATE_SLOT(d_func(), void _q_processDirtyItems())
Q_PRIVATE_SLOT(d_func(), void _q_updateScenePosDescendants())
friend class QGraphicsItem;
friend class QGraphicsItemPrivate;
friend class QGraphicsObject;
friend class QGraphicsView;
friend class QGraphicsViewPrivate;
friend class QGraphicsWidget;
friend class QGraphicsWidgetPrivate;
friend class QGraphicsEffect;
friend class QGraphicsSceneIndex;
friend class QGraphicsSceneIndexPrivate;
friend class QGraphicsSceneBspTreeIndex;
friend class QGraphicsSceneBspTreeIndexPrivate;
friend class QGraphicsItemEffectSourcePrivate;
#ifndef QT_NO_GESTURES
friend class QGesture;
#endif
};
Q_DECLARE_OPERATORS_FOR_FLAGS(QGraphicsScene::SceneLayers)
QT_END_NAMESPACE
#endif
|