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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qsgopenvgnodevisitor.h"
#include "qsgopenvginternalrectanglenode.h"
#include "qsgopenvginternalimagenode.h"
#include "qsgopenvgpublicnodes.h"
#include "qsgopenvgglyphnode_p.h"
#include "qsgopenvgpainternode.h"
#if QT_CONFIG(quick_sprite)
#include "qsgopenvgspritenode.h"
#endif
#include "qsgopenvgrenderable.h"
#include "qopenvgcontext_p.h"
#include <QtQuick/qsgsimplerectnode.h>
#include <QtQuick/qsgsimpletexturenode.h>
#include <QtQuick/qsgrendernode.h>
QT_BEGIN_NAMESPACE
QSGOpenVGNodeVisitor::QSGOpenVGNodeVisitor()
{
//Store the current matrix state
QList<VGfloat> matrix(9);
vgSeti(VG_MATRIX_MODE, VG_MATRIX_PATH_USER_TO_SURFACE);
vgGetMatrix(matrix.data());
m_transformStack.push(QOpenVGMatrix(matrix.constData()));
// Opacity
m_opacityState.push(1.0f);
}
bool QSGOpenVGNodeVisitor::visit(QSGTransformNode *node)
{
const QList<float> matrixData = { node->matrix().constData()[0], node->matrix().constData()[1], node->matrix().constData()[3],
node->matrix().constData()[4], node->matrix().constData()[5], node->matrix().constData()[7],
node->matrix().constData()[12], node->matrix().constData()[13], node->matrix().constData()[15] };
const QOpenVGMatrix matrix2d(matrixData.constData());
m_transformStack.push(m_transformStack.top() * matrix2d);
return true;
}
void QSGOpenVGNodeVisitor::endVisit(QSGTransformNode *)
{
m_transformStack.pop();
}
bool QSGOpenVGNodeVisitor::visit(QSGClipNode *node)
{
VGMaskOperation maskOperation = VG_INTERSECT_MASK;
if (m_clipStack.count() == 0) {
vgSeti(VG_MASKING, VG_TRUE);
vgMask(0,VG_FILL_MASK, 0, 0, VG_MAXINT, VG_MAXINT);
}
// Render clip node geometry to mask
vgSeti(VG_MATRIX_MODE, VG_MATRIX_PATH_USER_TO_SURFACE);
vgLoadIdentity();
VGPath clipPath = generateClipPath(node->clipRect());
vgRenderToMask(clipPath, VG_FILL_PATH, maskOperation);
m_clipStack.push(clipPath);
return true;
}
void QSGOpenVGNodeVisitor::endVisit(QSGClipNode *)
{
// Remove clip node geometry from mask
auto clipState = m_clipStack.pop();
vgDestroyPath(clipState);
if (m_clipStack.count() == 0) {
vgSeti(VG_MASKING, VG_FALSE);
} else {
// Recreate the mask
vgMask(0,VG_FILL_MASK, 0, 0, VG_MAXINT, VG_MAXINT);
vgSeti(VG_MATRIX_MODE, VG_MATRIX_PATH_USER_TO_SURFACE);
vgLoadIdentity();
for (auto path : std::as_const(m_clipStack)) {
vgRenderToMask(path, VG_FILL_PATH, VG_INTERSECT_MASK);
}
}
}
bool QSGOpenVGNodeVisitor::visit(QSGGeometryNode *node)
{
if (QSGSimpleRectNode *rectNode = dynamic_cast<QSGSimpleRectNode *>(node)) {
// TODO: Try and render the QSGSimpleRectNode
Q_UNUSED(rectNode);
return false;
} else if (QSGSimpleTextureNode *tn = dynamic_cast<QSGSimpleTextureNode *>(node)) {
// TODO: Try and render the QSGSimpleTextureNode
Q_UNUSED(tn);
return false;
} else if (QSGOpenVGNinePatchNode *nn = dynamic_cast<QSGOpenVGNinePatchNode *>(node)) {
renderRenderableNode(nn);
} else if (QSGOpenVGRectangleNode *rn = dynamic_cast<QSGOpenVGRectangleNode *>(node)) {
renderRenderableNode(rn);
} else if (QSGOpenVGImageNode *n = dynamic_cast<QSGOpenVGImageNode *>(node)) {
renderRenderableNode(n);
} else {
// We dont know, so skip
return false;
}
return true;
}
void QSGOpenVGNodeVisitor::endVisit(QSGGeometryNode *)
{
}
bool QSGOpenVGNodeVisitor::visit(QSGOpacityNode *node)
{
m_opacityState.push(m_opacityState.top() * node->opacity());
return true;
}
void QSGOpenVGNodeVisitor::endVisit(QSGOpacityNode *)
{
m_opacityState.pop();
}
bool QSGOpenVGNodeVisitor::visit(QSGInternalImageNode *node)
{
renderRenderableNode(static_cast<QSGOpenVGInternalImageNode*>(node));
return true;
}
void QSGOpenVGNodeVisitor::endVisit(QSGInternalImageNode *)
{
}
bool QSGOpenVGNodeVisitor::visit(QSGPainterNode *node)
{
renderRenderableNode(static_cast<QSGOpenVGPainterNode*>(node));
return true;
}
void QSGOpenVGNodeVisitor::endVisit(QSGPainterNode *)
{
}
bool QSGOpenVGNodeVisitor::visit(QSGInternalRectangleNode *node)
{
renderRenderableNode(static_cast<QSGOpenVGInternalRectangleNode*>(node));
return true;
}
void QSGOpenVGNodeVisitor::endVisit(QSGInternalRectangleNode *)
{
}
bool QSGOpenVGNodeVisitor::visit(QSGGlyphNode *node)
{
renderRenderableNode(static_cast<QSGOpenVGGlyphNode*>(node));
return true;
}
void QSGOpenVGNodeVisitor::endVisit(QSGGlyphNode *)
{
}
bool QSGOpenVGNodeVisitor::visit(QSGRootNode *)
{
return true;
}
void QSGOpenVGNodeVisitor::endVisit(QSGRootNode *)
{
}
#if QT_CONFIG(quick_sprite)
bool QSGOpenVGNodeVisitor::visit(QSGSpriteNode *node)
{
renderRenderableNode(static_cast<QSGOpenVGSpriteNode*>(node));
return true;
}
void QSGOpenVGNodeVisitor::endVisit(QSGSpriteNode *)
{
}
#endif
bool QSGOpenVGNodeVisitor::visit(QSGRenderNode *)
{
return true;
}
void QSGOpenVGNodeVisitor::endVisit(QSGRenderNode *)
{
}
VGPath QSGOpenVGNodeVisitor::generateClipPath(const QRectF &rect) const
{
VGPath clipPath = vgCreatePath(VG_PATH_FORMAT_STANDARD, VG_PATH_DATATYPE_F, 1, 0, 0, 0,
VG_PATH_CAPABILITY_APPEND_TO);
// Create command list
static const VGubyte rectCommands[] = {
VG_MOVE_TO_ABS,
VG_LINE_TO_ABS,
VG_LINE_TO_ABS,
VG_LINE_TO_ABS,
VG_CLOSE_PATH
};
const QOpenVGMatrix &transform = m_transformStack.top();
// Create command data
QList<VGfloat> coordinates(8);
const QPointF topLeft = transform.map(rect.topLeft());
const QPointF topRight = transform.map(rect.topRight());
const QPointF bottomLeft = transform.map(rect.bottomLeft());
const QPointF bottomRight = transform.map(rect.bottomRight());
coordinates[0] = bottomLeft.x();
coordinates[1] = bottomLeft.y();
coordinates[2] = bottomRight.x();
coordinates[3] = bottomRight.y();
coordinates[4] = topRight.x();
coordinates[5] = topRight.y();
coordinates[6] = topLeft.x();
coordinates[7] = topLeft.y();
vgAppendPathData(clipPath, 5, rectCommands, coordinates.constData());
return clipPath;
}
void QSGOpenVGNodeVisitor::renderRenderableNode(QSGOpenVGRenderable *node)
{
if (!node)
return;
node->setTransform(m_transformStack.top());
node->setOpacity(m_opacityState.top());
node->render();
}
QT_END_NAMESPACE