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39
40 #ifndef QSGSOFTWARERENDERABLENODEUPDATER_H
41 #define QSGSOFTWARERENDERABLENODEUPDATER_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 "qsgsoftwarerenderablenode_p.h"
55 #include "qsgabstractsoftwarerenderer_p.h"
56
57 #include <private/qsgadaptationlayer_p.h>
58
59 #include <QTransform>
60 #include <QStack>
61 #include <QRectF>
62
63 QT_BEGIN_NAMESPACE
64
65 class QSGSoftwareRenderableNodeUpdater : public QSGNodeVisitorEx
66 {
67 public:
68 QSGSoftwareRenderableNodeUpdater(QSGAbstractSoftwareRenderer *renderer);
69 virtual ~QSGSoftwareRenderableNodeUpdater();
70
71 bool visit(QSGTransformNode *) override;
72 void endVisit(QSGTransformNode *) override;
73 bool visit(QSGClipNode *) override;
74 void endVisit(QSGClipNode *) override;
75 bool visit(QSGGeometryNode *) override;
76 void endVisit(QSGGeometryNode *) override;
77 bool visit(QSGOpacityNode *) override;
78 void endVisit(QSGOpacityNode *) override;
79 bool visit(QSGInternalImageNode *) override;
80 void endVisit(QSGInternalImageNode *) override;
81 bool visit(QSGPainterNode *) override;
82 void endVisit(QSGPainterNode *) override;
83 bool visit(QSGInternalRectangleNode *) override;
84 void endVisit(QSGInternalRectangleNode *) override;
85 bool visit(QSGGlyphNode *) override;
86 void endVisit(QSGGlyphNode *) override;
87 bool visit(QSGRootNode *) override;
88 void endVisit(QSGRootNode *) override;
89 #if QT_CONFIG(quick_sprite)
90 bool visit(QSGSpriteNode *) override;
91 void endVisit(QSGSpriteNode *) override;
92 #endif
93 bool visit(QSGRenderNode *) override;
94 void endVisit(QSGRenderNode *) override;
95
96 void updateNodes(QSGNode *node, bool isNodeRemoved = false);
97
98 private:
99 struct NodeState {
100 float opacity;
101 QRegion clip;
102 bool hasClip;
103 QTransform transform;
104 QSGNode *parent;
105 };
106
107 NodeState currentState(QSGNode *node) const;
108
109 template<class NODE>
110 bool updateRenderableNode(QSGSoftwareRenderableNode::NodeType type, NODE *node);
111
112 QSGAbstractSoftwareRenderer *m_renderer;
113 QStack<float> m_opacityState;
114 QStack<QRegion> m_clipState;
115 bool m_hasClip;
116 QStack<QTransform> m_transformState;
117 QHash<QSGNode*,NodeState> m_stateMap;
118 };
119
120 template<class NODE>
updateRenderableNode(QSGSoftwareRenderableNode::NodeType type,NODE * node)121 bool QSGSoftwareRenderableNodeUpdater::updateRenderableNode(QSGSoftwareRenderableNode::NodeType type, NODE *node)
122 {
123 //Check if we already know about node
124 auto renderableNode = m_renderer->renderableNode(node);
125 if (renderableNode == nullptr) {
126 renderableNode = new QSGSoftwareRenderableNode(type, node);
127 m_renderer->addNodeMapping(node, renderableNode);
128 }
129
130 //Update the node
131 renderableNode->setTransform(m_transformState.top());
132 renderableNode->setOpacity(m_opacityState.top());
133 renderableNode->setClipRegion(m_clipState.top(), m_hasClip);
134
135 renderableNode->update();
136 m_stateMap[node] = currentState(node);
137
138 return true;
139 }
140
141 QT_END_NAMESPACE
142
143 #endif // QSGSOFTWARERENDERABLENODEUPDATER_H
144