diff options
Diffstat (limited to 'examples/quick/scenegraph/rendernode/softwarerenderer.cpp')
-rw-r--r-- | examples/quick/scenegraph/rendernode/softwarerenderer.cpp | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/examples/quick/scenegraph/rendernode/softwarerenderer.cpp b/examples/quick/scenegraph/rendernode/softwarerenderer.cpp new file mode 100644 index 0000000000..2f11c56f29 --- /dev/null +++ b/examples/quick/scenegraph/rendernode/softwarerenderer.cpp @@ -0,0 +1,91 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of The Qt Company Ltd nor the names of its +** contributors may be used to endorse or promote products derived +** from this software without specific prior written permission. +** +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "softwarerenderer.h" +#include <QQuickItem> +#include <QQuickWindow> +#include <QSGRendererInterface> +#include <QPainter> + +SoftwareRenderNode::SoftwareRenderNode(QQuickItem *item) + : m_item(item) +{ +} + +SoftwareRenderNode::~SoftwareRenderNode() +{ + releaseResources(); +} + +void SoftwareRenderNode::releaseResources() +{ +} + +void SoftwareRenderNode::render(const RenderState *renderState) +{ + QSGRendererInterface *rif = m_item->window()->rendererInterface(); + QPainter *p = static_cast<QPainter *>(rif->getResource(m_item->window(), QSGRendererInterface::Painter)); + Q_ASSERT(p); + + p->setTransform(matrix()->toTransform()); + p->setOpacity(inheritedOpacity()); + const QRegion *clipRegion = renderState->clipRegion(); + if (clipRegion && !clipRegion->isEmpty()) + p->setClipRegion(*clipRegion); + + const QPointF p0(m_item->width() - 1, m_item->height() - 1); + const QPointF p1(0, 0); + const QPointF p2(0, m_item->height() - 1); + QPainterPath path(p0); + path.lineTo(p1); + path.lineTo(p2); + path.closeSubpath(); + + QLinearGradient gradient(QPointF(0, 0), QPointF(m_item->width(), m_item->height())); + gradient.setColorAt(0, Qt::green); + gradient.setColorAt(1, Qt::red); + + p->fillPath(path, gradient); +} + +QSGRenderNode::StateFlags SoftwareRenderNode::changedStates() const +{ + return 0; +} |