diff options
Diffstat (limited to 'src/plugins/scenegraph/openvg/qsgopenvgnodevisitor.cpp')
| -rw-r--r-- | src/plugins/scenegraph/openvg/qsgopenvgnodevisitor.cpp | 275 |
1 files changed, 275 insertions, 0 deletions
diff --git a/src/plugins/scenegraph/openvg/qsgopenvgnodevisitor.cpp b/src/plugins/scenegraph/openvg/qsgopenvgnodevisitor.cpp new file mode 100644 index 0000000000..8aa179f705 --- /dev/null +++ b/src/plugins/scenegraph/openvg/qsgopenvgnodevisitor.cpp @@ -0,0 +1,275 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the QtQuick module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qsgopenvgnodevisitor.h" +#include "qsgopenvginternalrectanglenode.h" +#include "qsgopenvginternalimagenode.h" +#include "qsgopenvgpublicnodes.h" +#include "qsgopenvgglyphnode_p.h" +#include "qsgopenvgpainternode.h" +#include "qsgopenvgspritenode.h" +#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 + QVector<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 QVector<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 : qAsConst(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 *) +{ +} + +bool QSGOpenVGNodeVisitor::visit(QSGSpriteNode *node) +{ + renderRenderableNode(static_cast<QSGOpenVGSpriteNode*>(node)); + return true; +} + +void QSGOpenVGNodeVisitor::endVisit(QSGSpriteNode *) +{ +} + +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 + QVector<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 |