117 lines
4.0 KiB
C++
117 lines
4.0 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2017 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** BSD License Usage
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** Alternatively, you may use this file under the terms of the BSD license
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** as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of The Qt Company Ltd nor the names of its
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** contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "softwarerenderer.h"
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#include <QQuickItem>
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#include <QQuickWindow>
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#include <QSGRendererInterface>
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#include <QPainter>
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SoftwareRenderNode::~SoftwareRenderNode()
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{
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releaseResources();
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}
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void SoftwareRenderNode::releaseResources()
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{
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}
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void SoftwareRenderNode::render(const RenderState *renderState)
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{
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Q_ASSERT(m_window);
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QSGRendererInterface *rif = m_window->rendererInterface();
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QPainter *p = static_cast<QPainter *>(rif->getResource(m_window, QSGRendererInterface::PainterResource));
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Q_ASSERT(p);
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const QRegion *clipRegion = renderState->clipRegion();
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if (clipRegion && !clipRegion->isEmpty())
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p->setClipRegion(*clipRegion, Qt::ReplaceClip); // must be done before setTransform
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p->setTransform(matrix()->toTransform());
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p->setOpacity(inheritedOpacity());
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const QPointF p0(m_width - 1, m_height - 1);
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const QPointF p1(0, 0);
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const QPointF p2(0, m_height - 1);
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QPainterPath path(p0);
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path.lineTo(p1);
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path.lineTo(p2);
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path.closeSubpath();
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QLinearGradient gradient(QPointF(0, 0), QPointF(m_width, m_height));
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gradient.setColorAt(0, Qt::green);
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gradient.setColorAt(1, Qt::red);
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p->fillPath(path, gradient);
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}
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QSGRenderNode::StateFlags SoftwareRenderNode::changedStates() const
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{
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return nullptr;
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}
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QSGRenderNode::RenderingFlags SoftwareRenderNode::flags() const
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{
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return BoundedRectRendering;
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}
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QRectF SoftwareRenderNode::rect() const
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{
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return QRect(0, 0, m_width, m_height);
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}
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void SoftwareRenderNode::sync(QQuickItem *item)
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{
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m_window = item->window();
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m_width = item->width();
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m_height = item->height();
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}
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