1/****************************************************************************
2**
3** Copyright (C) 2016 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the QtQuick module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL$
9** Commercial License Usage
10** Licensees holding valid commercial Qt licenses may use this file in
11** accordance with the commercial license agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and The Qt Company. For licensing terms
14** and conditions see https://www.qt.io/terms-conditions. For further
15** information use the contact form at https://www.qt.io/contact-us.
16**
17** GNU Lesser General Public License Usage
18** Alternatively, this file may be used under the terms of the GNU Lesser
19** General Public License version 3 as published by the Free Software
20** Foundation and appearing in the file LICENSE.LGPL3 included in the
21** packaging of this file. Please review the following information to
22** ensure the GNU Lesser General Public License version 3 requirements
23** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
24**
25** GNU General Public License Usage
26** Alternatively, this file may be used under the terms of the GNU
27** General Public License version 2.0 or (at your option) the GNU General
28** Public license version 3 or any later version approved by the KDE Free
29** Qt Foundation. The licenses are as published by the Free Software
30** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
31** included in the packaging of this file. Please review the following
32** information to ensure the GNU General Public License requirements will
33** be met: https://www.gnu.org/licenses/gpl-2.0.html and
34** https://www.gnu.org/licenses/gpl-3.0.html.
35**
36** $QT_END_LICENSE$
37**
38****************************************************************************/
39
40#ifndef QSGNODEUPDATER_P_H
41#define QSGNODEUPDATER_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 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 <private/qtquickglobal_p.h>
55#include <QtGui/private/qdatabuffer_p.h>
56
57QT_BEGIN_NAMESPACE
58
59class QSGNode;
60class QSGTransformNode;
61class QSGClipNode;
62class QSGOpacityNode;
63class QSGGeometryNode;
64class QMatrix4x4;
65class QSGRenderNode;
66
67class Q_QUICK_PRIVATE_EXPORT QSGNodeUpdater
68{
69public:
70 QSGNodeUpdater();
71 virtual ~QSGNodeUpdater();
72
73 virtual void updateStates(QSGNode *n);
74 virtual bool isNodeBlocked(QSGNode *n, QSGNode *root) const;
75
76protected:
77 virtual void enterTransformNode(QSGTransformNode *);
78 virtual void leaveTransformNode(QSGTransformNode *);
79 void enterClipNode(QSGClipNode *c);
80 void leaveClipNode(QSGClipNode *c);
81 void enterOpacityNode(QSGOpacityNode *o);
82 void leaveOpacityNode(QSGOpacityNode *o);
83 void enterGeometryNode(QSGGeometryNode *);
84 void leaveGeometryNode(QSGGeometryNode *);
85 void enterRenderNode(QSGRenderNode *);
86 void leaveRenderNode(QSGRenderNode *);
87
88 void visitNode(QSGNode *n);
89 void visitChildren(QSGNode *n);
90
91
92 QDataBuffer<const QMatrix4x4 *> m_combined_matrix_stack;
93 QDataBuffer<qreal> m_opacity_stack;
94 const QSGClipNode *m_current_clip;
95
96 int m_force_update;
97};
98
99QT_END_NAMESPACE
100
101#endif
102