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39
40#ifndef DESIGNERSUPPORT_H
41#define DESIGNERSUPPORT_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 purely as an
48// implementation detail. 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 <QtQuick/qtquickglobal.h>
55#include <QtCore/QtGlobal>
56#include <QtCore/QHash>
57#include <QtCore/QRectF>
58
59QT_BEGIN_NAMESPACE
60
61class QQuickItem;
62class QSGLayer;
63class QImage;
64class QTransform;
65class QQmlContext;
66class QQuickView;
67class QObject;
68class QQuickWindow;
69
70class Q_QUICK_EXPORT QQuickDesignerSupport
71{
72public:
73 typedef QByteArray PropertyName;
74 typedef QList<PropertyName> PropertyNameList;
75 typedef QByteArray TypeName;
76
77 enum DirtyType {
78 TransformOrigin = 0x00000001,
79 Transform = 0x00000002,
80 BasicTransform = 0x00000004,
81 Position = 0x00000008,
82 Size = 0x00000010,
83
84 ZValue = 0x00000020,
85 Content = 0x00000040,
86 Smooth = 0x00000080,
87 OpacityValue = 0x00000100,
88 ChildrenChanged = 0x00000200,
89 ChildrenStackingChanged = 0x00000400,
90 ParentChanged = 0x00000800,
91
92 Clip = 0x00001000,
93 Window = 0x00002000,
94
95 EffectReference = 0x00008000,
96 Visible = 0x00010000,
97 HideReference = 0x00020000,
98
99 TransformUpdateMask = TransformOrigin | Transform | BasicTransform | Position | Size | Window,
100 ComplexTransformUpdateMask = Transform | Window,
101 ContentUpdateMask = Size | Content | Smooth | Window,
102 ChildrenUpdateMask = ChildrenChanged | ChildrenStackingChanged | EffectReference | Window,
103 AllMask = TransformUpdateMask | ContentUpdateMask | ChildrenUpdateMask
104 };
105
106
107 QQuickDesignerSupport();
108 ~QQuickDesignerSupport();
109
110 void refFromEffectItem(QQuickItem *referencedItem, bool hide = true);
111 void derefFromEffectItem(QQuickItem *referencedItem, bool unhide = true);
112
113 QImage renderImageForItem(QQuickItem *referencedItem, const QRectF &boundingRect, const QSize &imageSize);
114
115 static bool isDirty(QQuickItem *referencedItem, DirtyType dirtyType);
116 static void addDirty(QQuickItem *referencedItem, DirtyType dirtyType);
117 static void resetDirty(QQuickItem *referencedItem);
118
119 static QTransform windowTransform(QQuickItem *referencedItem);
120 static QTransform parentTransform(QQuickItem *referencedItem);
121
122 static bool isAnchoredTo(QQuickItem *fromItem, QQuickItem *toItem);
123 static bool areChildrenAnchoredTo(QQuickItem *fromItem, QQuickItem *toItem);
124 static bool hasAnchor(QQuickItem *item, const QString &name);
125 static QQuickItem *anchorFillTargetItem(QQuickItem *item);
126 static QQuickItem *anchorCenterInTargetItem(QQuickItem *item);
127 static QPair<QString, QObject*> anchorLineTarget(QQuickItem *item, const QString &name, QQmlContext *context);
128 static void resetAnchor(QQuickItem *item, const QString &name);
129 static void emitComponentCompleteSignalForAttachedProperty(QObject *item);
130
131 static QList<QObject*> statesForItem(QQuickItem *item);
132
133 static bool isComponentComplete(QQuickItem *item);
134
135 static int borderWidth(QQuickItem *item);
136
137 static void refreshExpressions(QQmlContext *context);
138
139 static void setRootItem(QQuickView *view, QQuickItem *item);
140
141 static bool isValidWidth(QQuickItem *item);
142 static bool isValidHeight(QQuickItem *item);
143
144 static void updateDirtyNode(QQuickItem *item);
145
146 static void activateDesignerWindowManager();
147 static void activateDesignerMode();
148
149 static void disableComponentComplete();
150 static void enableComponentComplete();
151
152 static void createOpenGLContext(QQuickWindow *window);
153
154 static void polishItems(QQuickWindow *window);
155
156private:
157 QHash<QQuickItem*, QSGLayer*> m_itemTextureHash;
158};
159
160class Q_QUICK_EXPORT ComponentCompleteDisabler
161{
162public:
163 ComponentCompleteDisabler();
164
165 ~ComponentCompleteDisabler();
166};
167
168typedef QQuickDesignerSupport DesignerSupport;
169
170QT_END_NAMESPACE
171
172#endif // DESIGNERSUPPORT_H
173

source code of qtdeclarative/src/quick/designer/qquickdesignersupport_p.h