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| ** This file is part of the examples of the Qt Toolkit. |
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| |
| #include "softwarerenderer.h" |
| #include <QQuickItem> |
| #include <QQuickWindow> |
| #include <QSGRendererInterface> |
| #include <QPainter> |
| |
| SoftwareRenderNode::~SoftwareRenderNode() |
| { |
| releaseResources(); |
| } |
| |
| void SoftwareRenderNode::releaseResources() |
| { |
| } |
| |
| void SoftwareRenderNode::render(const RenderState *renderState) |
| { |
| Q_ASSERT(m_window); |
| |
| QSGRendererInterface *rif = m_window->rendererInterface(); |
| QPainter *p = static_cast<QPainter *>(rif->getResource(m_window, QSGRendererInterface::PainterResource)); |
| Q_ASSERT(p); |
| |
| const QRegion *clipRegion = renderState->clipRegion(); |
| if (clipRegion && !clipRegion->isEmpty()) |
| p->setClipRegion(*clipRegion, Qt::ReplaceClip); // must be done before setTransform |
| |
| p->setTransform(matrix()->toTransform()); |
| p->setOpacity(inheritedOpacity()); |
| |
| const QPointF p0(m_width - 1, m_height - 1); |
| const QPointF p1(0, 0); |
| const QPointF p2(0, m_height - 1); |
| QPainterPath path(p0); |
| path.lineTo(p1); |
| path.lineTo(p2); |
| path.closeSubpath(); |
| |
| QLinearGradient gradient(QPointF(0, 0), QPointF(m_width, m_height)); |
| gradient.setColorAt(0, Qt::green); |
| gradient.setColorAt(1, Qt::red); |
| |
| p->fillPath(path, gradient); |
| } |
| |
| QSGRenderNode::StateFlags SoftwareRenderNode::changedStates() const |
| { |
| return nullptr; |
| } |
| |
| QSGRenderNode::RenderingFlags SoftwareRenderNode::flags() const |
| { |
| return BoundedRectRendering; |
| } |
| |
| QRectF SoftwareRenderNode::rect() const |
| { |
| return QRect(0, 0, m_width, m_height); |
| } |
| |
| void SoftwareRenderNode::sync(QQuickItem *item) |
| { |
| m_window = item->window(); |
| m_width = item->width(); |
| m_height = item->height(); |
| } |