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
|
/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QGRAPHICSVIEW_P_H
#define QGRAPHICSVIEW_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of other Qt classes. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include "qgraphicsview.h"
#if !defined(QT_NO_GRAPHICSVIEW) || (QT_EDITION & QT_MODULE_GRAPHICSVIEW) != QT_MODULE_GRAPHICSVIEW
#include <QtGui/qevent.h>
#include <QtCore/qcoreapplication.h>
#include "qgraphicssceneevent.h"
#include <QtGui/qstyleoption.h>
#include <private/qabstractscrollarea_p.h>
QT_BEGIN_NAMESPACE
class Q_GUI_EXPORT QGraphicsViewPrivate : public QAbstractScrollAreaPrivate
{
Q_DECLARE_PUBLIC(QGraphicsView)
public:
QGraphicsViewPrivate();
void recalculateContentSize();
void centerView(QGraphicsView::ViewportAnchor anchor);
QPainter::RenderHints renderHints;
QGraphicsView::DragMode dragMode;
quint32 sceneInteractionAllowed : 1;
quint32 hasSceneRect : 1;
quint32 connectedToScene : 1;
quint32 useLastMouseEvent : 1;
quint32 identityMatrix : 1;
quint32 dirtyScroll : 1;
quint32 accelerateScrolling : 1;
quint32 keepLastCenterPoint : 1;
quint32 transforming : 1;
quint32 handScrolling : 1;
quint32 mustAllocateStyleOptions : 1;
quint32 mustResizeBackgroundPixmap : 1;
quint32 fullUpdatePending : 1;
quint32 hasUpdateClip : 1;
quint32 padding : 18;
QRectF sceneRect;
void updateLastCenterPoint();
qint64 horizontalScroll() const;
qint64 verticalScroll() const;
QRectF mapRectToScene(const QRect &rect) const;
QRectF mapRectFromScene(const QRectF &rect) const;
QRect updateClip;
QPointF mousePressItemPoint;
QPointF mousePressScenePoint;
QPoint mousePressViewPoint;
QPoint mousePressScreenPoint;
QPointF lastMouseMoveScenePoint;
QPoint lastMouseMoveScreenPoint;
QPoint dirtyScrollOffset;
Qt::MouseButton mousePressButton;
QTransform matrix;
qint64 scrollX, scrollY;
void updateScroll();
qreal leftIndent;
qreal topIndent;
// Replaying mouse events
QMouseEvent lastMouseEvent;
void replayLastMouseEvent();
void storeMouseEvent(QMouseEvent *event);
void mouseMoveEventHandler(QMouseEvent *event);
QPointF lastCenterPoint;
Qt::Alignment alignment;
QGraphicsView::ViewportAnchor transformationAnchor;
QGraphicsView::ViewportAnchor resizeAnchor;
QGraphicsView::ViewportUpdateMode viewportUpdateMode;
QGraphicsView::OptimizationFlags optimizationFlags;
QPointer<QGraphicsScene> scene;
#ifndef QT_NO_RUBBERBAND
QRect rubberBandRect;
QRegion rubberBandRegion(const QWidget *widget, const QRect &rect) const;
bool rubberBanding;
Qt::ItemSelectionMode rubberBandSelectionMode;
#endif
int handScrollMotions;
QGraphicsView::CacheMode cacheMode;
QVector<QStyleOptionGraphicsItem> styleOptions;
QStyleOptionGraphicsItem *allocStyleOptionsArray(int numItems);
void freeStyleOptionsArray(QStyleOptionGraphicsItem *array);
QBrush backgroundBrush;
QBrush foregroundBrush;
QPixmap backgroundPixmap;
QRegion backgroundPixmapExposed;
#ifndef QT_NO_CURSOR
QCursor originalCursor;
bool hasStoredOriginalCursor;
void _q_setViewportCursor(const QCursor &cursor);
void _q_unsetViewportCursor();
#endif
QGraphicsSceneDragDropEvent *lastDragDropEvent;
void storeDragDropEvent(const QGraphicsSceneDragDropEvent *event);
void populateSceneDragDropEvent(QGraphicsSceneDragDropEvent *dest,
QDropEvent *source);
QRect mapToViewRect(const QGraphicsItem *item, const QRectF &rect) const;
QRegion mapToViewRegion(const QGraphicsItem *item, const QRectF &rect) const;
QRegion dirtyRegion;
QRect dirtyBoundingRect;
void processPendingUpdates();
inline void updateAll()
{
viewport->update();
fullUpdatePending = true;
dirtyBoundingRect = QRect();
dirtyRegion = QRegion();
}
inline void dispatchPendingUpdateRequests()
{
#ifndef Q_WS_MAC
// QWidget::update() works slightly different on the Mac; it's not part of
// our backing store so it needs special threatment.
if (qt_widget_private(viewport)->paintOnScreen())
QCoreApplication::sendPostedEvents(viewport, QEvent::UpdateRequest);
else
QCoreApplication::sendPostedEvents(viewport->window(), QEvent::UpdateRequest);
#else
// At this point either HIViewSetNeedsDisplay (Carbon) or setNeedsDisplay: YES (Cocoa)
// is called, which means there's a pending update request. We want to dispatch it
// now because otherwise graphics view updates would require two
// round-trips in the event loop before the item is painted.
extern void qt_mac_dispatchPendingUpdateRequests(QWidget *);
qt_mac_dispatchPendingUpdateRequests(viewport->window());
#endif
}
void setUpdateClip(QGraphicsItem *);
inline bool updateRectF(const QRectF &rect)
{
if (rect.isEmpty())
return false;
if (optimizationFlags & QGraphicsView::DontAdjustForAntialiasing)
return updateRect(rect.toAlignedRect().adjusted(-1, -1, 1, 1));
return updateRect(rect.toAlignedRect().adjusted(-2, -2, 2, 2));
}
bool updateRect(const QRect &rect);
bool updateRegion(const QRectF &rect, const QTransform &xform);
bool updateSceneSlotReimplementedChecked;
QRegion exposedRegion;
QList<QGraphicsItem *> findItems(const QRegion &exposedRegion, bool *allItems,
const QTransform &viewTransform) const;
QPointF mapToScene(const QPointF &point) const;
QRectF mapToScene(const QRectF &rect) const;
static void translateTouchEvent(QGraphicsViewPrivate *d, QTouchEvent *touchEvent);
void updateInputMethodSensitivity();
};
QT_END_NAMESPACE
#endif // QT_NO_GRAPHICSVIEW
#endif
|
