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39
40#include "qsgsoftwarerenderablenodeupdater_p.h"
41
42#include "qsgabstractsoftwarerenderer_p.h"
43#include "qsgsoftwareinternalimagenode_p.h"
44#include "qsgsoftwareinternalrectanglenode_p.h"
45#include "qsgsoftwareglyphnode_p.h"
46#include "qsgsoftwarepublicnodes_p.h"
47#include "qsgsoftwarepainternode_p.h"
48#include "qsgsoftwarepixmaptexture_p.h"
49
50#include <QtQuick/qsgsimplerectnode.h>
51#include <QtQuick/qsgsimpletexturenode.h>
52#include <QtQuick/qsgrendernode.h>
53
54QT_BEGIN_NAMESPACE
55
56QSGSoftwareRenderableNodeUpdater::QSGSoftwareRenderableNodeUpdater(QSGAbstractSoftwareRenderer *renderer)
57 : m_renderer(renderer)
58{
59 m_opacityState.push(t: 1.0f);
60 // Invalid RectF by default for no clip
61 m_clipState.push(t: QRegion());
62 m_hasClip = false;
63 m_transformState.push(t: QTransform());
64}
65
66QSGSoftwareRenderableNodeUpdater::~QSGSoftwareRenderableNodeUpdater()
67{
68
69}
70
71bool QSGSoftwareRenderableNodeUpdater::visit(QSGTransformNode *node)
72{
73 m_transformState.push(t: node->matrix().toTransform() * m_transformState.top());
74 m_stateMap[node] = currentState(node);
75 return true;
76}
77
78void QSGSoftwareRenderableNodeUpdater::endVisit(QSGTransformNode *)
79{
80 m_transformState.pop();
81}
82
83bool QSGSoftwareRenderableNodeUpdater::visit(QSGClipNode *node)
84{
85 // Make sure to translate the clip rect into world coordinates
86 if (m_clipState.count() == 0 || (m_clipState.count() == 1 && m_clipState.top().isNull())) {
87 m_clipState.push(t: m_transformState.top().map(r: QRegion(node->clipRect().toRect())));
88 m_hasClip = true;
89 } else {
90 const QRegion transformedClipRect = m_transformState.top().map(r: QRegion(node->clipRect().toRect()));
91 m_clipState.push(t: transformedClipRect.intersected(r: m_clipState.top()));
92 }
93 m_stateMap[node] = currentState(node);
94 return true;
95}
96
97void QSGSoftwareRenderableNodeUpdater::endVisit(QSGClipNode *)
98{
99 m_clipState.pop();
100 if (m_clipState.count() == 0 || (m_clipState.count() == 1 && m_clipState.top().isNull()))
101 m_hasClip = false;
102}
103
104bool QSGSoftwareRenderableNodeUpdater::visit(QSGGeometryNode *node)
105{
106 if (QSGSimpleRectNode *rectNode = dynamic_cast<QSGSimpleRectNode *>(node)) {
107 return updateRenderableNode(type: QSGSoftwareRenderableNode::SimpleRect, node: rectNode);
108 } else if (QSGSimpleTextureNode *tn = dynamic_cast<QSGSimpleTextureNode *>(node)) {
109 return updateRenderableNode(type: QSGSoftwareRenderableNode::SimpleTexture, node: tn);
110 } else if (QSGNinePatchNode *nn = dynamic_cast<QSGNinePatchNode *>(node)) {
111 return updateRenderableNode(type: QSGSoftwareRenderableNode::NinePatch, node: nn);
112 } else if (QSGRectangleNode *rn = dynamic_cast<QSGRectangleNode *>(node)) {
113 return updateRenderableNode(type: QSGSoftwareRenderableNode::SimpleRectangle, node: rn);
114 } else if (QSGImageNode *n = dynamic_cast<QSGImageNode *>(node)) {
115 return updateRenderableNode(type: QSGSoftwareRenderableNode::SimpleImage, node: n);
116 } else {
117 // We dont know, so skip
118 return false;
119 }
120}
121
122void QSGSoftwareRenderableNodeUpdater::endVisit(QSGGeometryNode *)
123{
124}
125
126bool QSGSoftwareRenderableNodeUpdater::visit(QSGOpacityNode *node)
127{
128 m_opacityState.push(t: m_opacityState.top() * node->opacity());
129 m_stateMap[node] = currentState(node);
130 return true;
131}
132
133void QSGSoftwareRenderableNodeUpdater::endVisit(QSGOpacityNode *)
134{
135 m_opacityState.pop();
136}
137
138bool QSGSoftwareRenderableNodeUpdater::visit(QSGInternalImageNode *node)
139{
140 return updateRenderableNode(type: QSGSoftwareRenderableNode::Image, node);
141}
142
143void QSGSoftwareRenderableNodeUpdater::endVisit(QSGInternalImageNode *)
144{
145}
146
147bool QSGSoftwareRenderableNodeUpdater::visit(QSGPainterNode *node)
148{
149 return updateRenderableNode(type: QSGSoftwareRenderableNode::Painter, node);
150}
151
152void QSGSoftwareRenderableNodeUpdater::endVisit(QSGPainterNode *)
153{
154}
155
156bool QSGSoftwareRenderableNodeUpdater::visit(QSGInternalRectangleNode *node)
157{
158 return updateRenderableNode(type: QSGSoftwareRenderableNode::Rectangle, node);
159}
160
161void QSGSoftwareRenderableNodeUpdater::endVisit(QSGInternalRectangleNode *)
162{
163}
164
165bool QSGSoftwareRenderableNodeUpdater::visit(QSGGlyphNode *node)
166{
167 return updateRenderableNode(type: QSGSoftwareRenderableNode::Glyph, node);
168}
169
170void QSGSoftwareRenderableNodeUpdater::endVisit(QSGGlyphNode *)
171{
172}
173
174bool QSGSoftwareRenderableNodeUpdater::visit(QSGRootNode *node)
175{
176 m_stateMap[node] = currentState(node);
177 return true;
178}
179
180void QSGSoftwareRenderableNodeUpdater::endVisit(QSGRootNode *)
181{
182}
183
184#if QT_CONFIG(quick_sprite)
185bool QSGSoftwareRenderableNodeUpdater::visit(QSGSpriteNode *node)
186{
187 return updateRenderableNode(type: QSGSoftwareRenderableNode::SpriteNode, node);
188}
189
190void QSGSoftwareRenderableNodeUpdater::endVisit(QSGSpriteNode *)
191{
192
193}
194#endif
195
196bool QSGSoftwareRenderableNodeUpdater::visit(QSGRenderNode *node)
197{
198 return updateRenderableNode(type: QSGSoftwareRenderableNode::RenderNode, node);
199}
200
201void QSGSoftwareRenderableNodeUpdater::endVisit(QSGRenderNode *)
202{
203}
204
205void QSGSoftwareRenderableNodeUpdater::updateNodes(QSGNode *node, bool isNodeRemoved)
206{
207 m_opacityState.clear();
208 m_clipState.clear();
209 m_transformState.clear();
210
211 auto parentNode = node->parent();
212 // If the node was deleted, it will have no parent
213 // check if the state map has the previous parent
214 if ((!parentNode || isNodeRemoved ) && m_stateMap.contains(akey: node))
215 parentNode = m_stateMap[node].parent;
216
217 // If we find a parent, use its state for updating the new children
218 if (parentNode && m_stateMap.contains(akey: parentNode)) {
219 auto state = m_stateMap[parentNode];
220 m_opacityState.push(t: state.opacity);
221 m_transformState.push(t: state.transform);
222 m_clipState.push(t: state.clip);
223 m_hasClip = state.hasClip;
224 } else {
225 // There is no parent, and no previous parent, so likely a root node
226 m_opacityState.push(t: 1.0f);
227 m_transformState.push(t: QTransform());
228 m_clipState.push(t: QRegion());
229 m_hasClip = false;
230 }
231
232 // If the node is being removed, then cleanup the state data
233 // Then just visit the children without visiting the now removed node
234 if (isNodeRemoved) {
235 m_stateMap.remove(akey: node);
236 return;
237 }
238
239 // Visit the current node itself first
240 switch (node->type()) {
241 case QSGNode::ClipNodeType: {
242 QSGClipNode *c = static_cast<QSGClipNode*>(node);
243 if (visit(node: c))
244 visitChildren(node: c);
245 endVisit(c);
246 break;
247 }
248 case QSGNode::TransformNodeType: {
249 QSGTransformNode *c = static_cast<QSGTransformNode*>(node);
250 if (visit(node: c))
251 visitChildren(node: c);
252 endVisit(c);
253 break;
254 }
255 case QSGNode::OpacityNodeType: {
256 QSGOpacityNode *c = static_cast<QSGOpacityNode*>(node);
257 if (visit(node: c))
258 visitChildren(node: c);
259 endVisit(c);
260 break;
261 }
262 case QSGNode::GeometryNodeType: {
263 if (node->flags() & QSGNode::IsVisitableNode) {
264 QSGVisitableNode *v = static_cast<QSGVisitableNode*>(node);
265 v->accept(this);
266 } else {
267 QSGGeometryNode *c = static_cast<QSGGeometryNode*>(node);
268 if (visit(node: c))
269 visitChildren(node: c);
270 endVisit(c);
271 }
272 break;
273 }
274 case QSGNode::RootNodeType: {
275 QSGRootNode *root = static_cast<QSGRootNode*>(node);
276 if (visit(node: root))
277 visitChildren(node: root);
278 endVisit(root);
279 break;
280 }
281 case QSGNode::BasicNodeType: {
282 visitChildren(node);
283 break;
284 }
285 case QSGNode::RenderNodeType: {
286 QSGRenderNode *r = static_cast<QSGRenderNode*>(node);
287 if (visit(node: r))
288 visitChildren(node: r);
289 endVisit(r);
290 break;
291 }
292 default:
293 Q_UNREACHABLE();
294 break;
295 }
296}
297
298QSGSoftwareRenderableNodeUpdater::NodeState QSGSoftwareRenderableNodeUpdater::currentState(QSGNode *node) const
299{
300 NodeState state;
301 state.opacity = m_opacityState.top();
302 state.clip = m_clipState.top();
303 state.hasClip = m_hasClip;
304 state.transform = m_transformState.top();
305 state.parent = node->parent();
306 return state;
307}
308
309QT_END_NAMESPACE
310

source code of qtdeclarative/src/quick/scenegraph/adaptations/software/qsgsoftwarerenderablenodeupdater.cpp