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39
40#ifndef QGRAPHICSWIDGET_P_H
41#define QGRAPHICSWIDGET_P_H
42
43//
44// W A R N I N G
45// -------------
46//
47// This file is not part of the Qt API. It exists for the convenience
48// of other Qt classes. This header file may change from version to
49// version without notice, or even be removed.
50//
51// We mean it.
52//
53
54#include <QtWidgets/private/qtwidgetsglobal_p.h>
55#include <private/qobject_p.h>
56#include "qgraphicsitem_p.h"
57#include "qgraphicswidget.h"
58#include <QtGui/qfont.h>
59#include <QtGui/qpalette.h>
60#include <QtWidgets/qsizepolicy.h>
61#include <QtWidgets/qstyle.h>
62
63#include <memory>
64
65QT_REQUIRE_CONFIG(graphicsview);
66
67QT_BEGIN_NAMESPACE
68
69class QGraphicsLayout;
70class QStyleOptionTitleBar;
71
72class QGraphicsWidgetPrivate : public QGraphicsItemPrivate
73{
74 Q_DECLARE_PUBLIC(QGraphicsWidget)
75public:
76 QGraphicsWidgetPrivate();
77 virtual ~QGraphicsWidgetPrivate();
78
79 void init(QGraphicsItem *parentItem, Qt::WindowFlags wFlags);
80 qreal titleBarHeight(const QStyleOptionTitleBar &options) const;
81
82 // Margins
83 mutable std::unique_ptr<QMarginsF> margins;
84 void ensureMargins() const;
85
86 void fixFocusChainBeforeReparenting(QGraphicsWidget *newParent, QGraphicsScene *oldScene, QGraphicsScene *newScene = nullptr);
87 void setLayout_helper(QGraphicsLayout *l);
88
89 // Layouts
90 QGraphicsLayout *layout;
91 void setLayoutDirection_helper(Qt::LayoutDirection direction);
92 void resolveLayoutDirection();
93
94 // Style
95 QPalette palette;
96 uint inheritedPaletteResolveMask;
97 void setPalette_helper(const QPalette &palette);
98 void resolvePalette(uint inheritedMask) override;
99 void updatePalette(const QPalette &palette);
100 QPalette naturalWidgetPalette() const;
101 QFont font;
102 uint inheritedFontResolveMask;
103 void setFont_helper(const QFont &font);
104 void resolveFont(uint inheritedMask) override;
105 void updateFont(const QFont &font);
106 QFont naturalWidgetFont() const;
107
108 // Window specific
109 void initStyleOptionTitleBar(QStyleOptionTitleBar *option);
110 void adjustWindowFlags(Qt::WindowFlags *wFlags);
111 void windowFrameMouseReleaseEvent(QGraphicsSceneMouseEvent *event);
112 void windowFrameMousePressEvent(QGraphicsSceneMouseEvent *event);
113 void windowFrameMouseMoveEvent(QGraphicsSceneMouseEvent *event);
114 void windowFrameHoverMoveEvent(QGraphicsSceneHoverEvent *event);
115 void windowFrameHoverLeaveEvent(QGraphicsSceneHoverEvent *event);
116 bool hasDecoration() const;
117
118 // Private Properties
119 qreal width() const override;
120 void setWidth(qreal) override;
121 void resetWidth() override;
122
123 qreal height() const override;
124 void setHeight(qreal) override;
125 void resetHeight() override;
126 void setGeometryFromSetPos();
127
128 // State
129 inline int attributeToBitIndex(Qt::WidgetAttribute att) const
130 {
131 int bit = -1;
132 switch (att) {
133 case Qt::WA_SetLayoutDirection: bit = 0; break;
134 case Qt::WA_RightToLeft: bit = 1; break;
135 case Qt::WA_SetStyle: bit = 2; break;
136 case Qt::WA_Resized: bit = 3; break;
137 case Qt::WA_DeleteOnClose: bit = 4; break;
138 case Qt::WA_NoSystemBackground: bit = 5; break;
139 case Qt::WA_OpaquePaintEvent: bit = 6; break;
140 case Qt::WA_SetPalette: bit = 7; break;
141 case Qt::WA_SetFont: bit = 8; break;
142 case Qt::WA_WindowPropagation: bit = 9; break;
143 default: break;
144 }
145 return bit;
146 }
147 inline void setAttribute(Qt::WidgetAttribute att, bool value)
148 {
149 int bit = attributeToBitIndex(att);
150 if (bit == -1) {
151 qWarning(msg: "QGraphicsWidget::setAttribute: unsupported attribute %d", int(att));
152 return;
153 }
154 if (value)
155 attributes |= (1 << bit);
156 else
157 attributes &= ~(1 << bit);
158 }
159 inline bool testAttribute(Qt::WidgetAttribute att) const
160 {
161 int bit = attributeToBitIndex(att);
162 if (bit == -1)
163 return false;
164 return (attributes & (1 << bit)) != 0;
165 }
166 quint32 attributes : 10;
167 quint32 inSetGeometry : 1;
168 quint32 polished: 1;
169 quint32 inSetPos : 1;
170 quint32 autoFillBackground : 1;
171
172 // Focus
173 Qt::FocusPolicy focusPolicy;
174 QGraphicsWidget *focusNext;
175 QGraphicsWidget *focusPrev;
176
177 // Windows
178 Qt::WindowFlags windowFlags;
179 struct WindowData {
180 QString windowTitle;
181 QStyle::SubControl hoveredSubControl;
182 Qt::WindowFrameSection grabbedSection;
183 uint buttonMouseOver : 1;
184 uint buttonSunken : 1;
185 QRectF startGeometry;
186 QRect buttonRect;
187 WindowData()
188 : hoveredSubControl(QStyle::SC_None)
189 , grabbedSection(Qt::NoSection)
190 , buttonMouseOver(false)
191 , buttonSunken(false)
192 {}
193 };
194 std::unique_ptr<WindowData> windowData;
195 void ensureWindowData();
196
197 bool setWindowFrameMargins;
198 mutable std::unique_ptr<QMarginsF> windowFrameMargins;
199 void ensureWindowFrameMargins() const;
200
201#ifndef QT_NO_ACTION
202 QList<QAction *> actions;
203#endif
204};
205
206QT_END_NAMESPACE
207
208#endif //QGRAPHICSWIDGET_P_H
209
210

source code of qtbase/src/widgets/graphicsview/qgraphicswidget_p.h