File indexing completed on 2024-04-21 03:56:01

 /*
  *  SPDX-FileCopyrightText: 2020 Arjen Hiemstra <ahiemstra@heimr.nl>
  *
  *  SPDX-License-Identifier: LGPL-2.0-or-later
  */
 
 #include "shadowedrectangle.h"
 
 #include <QQuickWindow>
 #include <QSGRectangleNode>
 #include <QSGRendererInterface>
 
 #include "scenegraph/paintedrectangleitem.h"
 #include "scenegraph/shadowedrectanglenode.h"
 
 BorderGroup::BorderGroup(QObject *parent)
     : QObject(parent)
 {
 }
 
 qreal BorderGroup::width() const
 {
     return m_width;
 }
 
 void BorderGroup::setWidth(qreal newWidth)
 {
     if (newWidth == m_width) {
         return;
     }
 
     m_width = newWidth;
     Q_EMIT changed();
 }
 
 QColor BorderGroup::color() const
 {
     return m_color;
 }
 
 void BorderGroup::setColor(const QColor &newColor)
 {
     if (newColor == m_color) {
         return;
     }
 
     m_color = newColor;
     Q_EMIT changed();
 }
 
 ShadowGroup::ShadowGroup(QObject *parent)
     : QObject(parent)
 {
 }
 
 qreal ShadowGroup::size() const
 {
     return m_size;
 }
 
 void ShadowGroup::setSize(qreal newSize)
 {
     if (newSize == m_size) {
         return;
     }
 
     m_size = newSize;
     Q_EMIT changed();
 }
 
 qreal ShadowGroup::xOffset() const
 {
     return m_xOffset;
 }
 
 void ShadowGroup::setXOffset(qreal newXOffset)
 {
     if (newXOffset == m_xOffset) {
         return;
     }
 
     m_xOffset = newXOffset;
     Q_EMIT changed();
 }
 
 qreal ShadowGroup::yOffset() const
 {
     return m_yOffset;
 }
 
 void ShadowGroup::setYOffset(qreal newYOffset)
 {
     if (newYOffset == m_yOffset) {
         return;
     }
 
     m_yOffset = newYOffset;
     Q_EMIT changed();
 }
 
 QColor ShadowGroup::color() const
 {
     return m_color;
 }
 
 void ShadowGroup::setColor(const QColor &newColor)
 {
     if (newColor == m_color) {
         return;
     }
 
     m_color = newColor;
     Q_EMIT changed();
 }
 
 CornersGroup::CornersGroup(QObject *parent)
     : QObject(parent)
 {
 }
 
 qreal CornersGroup::topLeft() const
 {
     return m_topLeft;
 }
 
 void CornersGroup::setTopLeft(qreal newTopLeft)
 {
     if (newTopLeft == m_topLeft) {
         return;
     }
 
     m_topLeft = newTopLeft;
     Q_EMIT changed();
 }
 
 qreal CornersGroup::topRight() const
 {
     return m_topRight;
 }
 
 void CornersGroup::setTopRight(qreal newTopRight)
 {
     if (newTopRight == m_topRight) {
         return;
     }
 
     m_topRight = newTopRight;
     Q_EMIT changed();
 }
 
 qreal CornersGroup::bottomLeft() const
 {
     return m_bottomLeft;
 }
 
 void CornersGroup::setBottomLeft(qreal newBottomLeft)
 {
     if (newBottomLeft == m_bottomLeft) {
         return;
     }
 
     m_bottomLeft = newBottomLeft;
     Q_EMIT changed();
 }
 
 qreal CornersGroup::bottomRight() const
 {
     return m_bottomRight;
 }
 
 void CornersGroup::setBottomRight(qreal newBottomRight)
 {
     if (newBottomRight == m_bottomRight) {
         return;
     }
 
     m_bottomRight = newBottomRight;
     Q_EMIT changed();
 }
 
 QVector4D CornersGroup::toVector4D(float all) const
 {
     return QVector4D{m_bottomRight < 0.0 ? all : m_bottomRight,
                      m_topRight < 0.0 ? all : m_topRight,
                      m_bottomLeft < 0.0 ? all : m_bottomLeft,
                      m_topLeft < 0.0 ? all : m_topLeft};
 }
 
 ShadowedRectangle::ShadowedRectangle(QQuickItem *parentItem)
     : QQuickItem(parentItem)
     , m_border(std::make_unique<BorderGroup>())
     , m_shadow(std::make_unique<ShadowGroup>())
     , m_corners(std::make_unique<CornersGroup>())
 {
     setFlag(QQuickItem::ItemHasContents, true);
 
     connect(m_border.get(), &BorderGroup::changed, this, &ShadowedRectangle::update);
     connect(m_shadow.get(), &ShadowGroup::changed, this, &ShadowedRectangle::update);
     connect(m_corners.get(), &CornersGroup::changed, this, &ShadowedRectangle::update);
 }
 
 ShadowedRectangle::~ShadowedRectangle()
 {
 }
 
 BorderGroup *ShadowedRectangle::border() const
 {
     return m_border.get();
 }
 
 ShadowGroup *ShadowedRectangle::shadow() const
 {
     return m_shadow.get();
 }
 
 CornersGroup *ShadowedRectangle::corners() const
 {
     return m_corners.get();
 }
 
 qreal ShadowedRectangle::radius() const
 {
     return m_radius;
 }
 
 void ShadowedRectangle::setRadius(qreal newRadius)
 {
     if (newRadius == m_radius) {
         return;
     }
 
     m_radius = newRadius;
     if (!isSoftwareRendering()) {
         update();
     }
     Q_EMIT radiusChanged();
 }
 
 QColor ShadowedRectangle::color() const
 {
     return m_color;
 }
 
 void ShadowedRectangle::setColor(const QColor &newColor)
 {
     if (newColor == m_color) {
         return;
     }
 
     m_color = newColor;
     if (!isSoftwareRendering()) {
         update();
     }
     Q_EMIT colorChanged();
 }
 
 ShadowedRectangle::RenderType ShadowedRectangle::renderType() const
 {
     return m_renderType;
 }
 
 void ShadowedRectangle::setRenderType(RenderType renderType)
 {
     if (renderType == m_renderType) {
         return;
     }
     m_renderType = renderType;
     update();
     Q_EMIT renderTypeChanged();
 }
 
 void ShadowedRectangle::componentComplete()
 {
     QQuickItem::componentComplete();
 
     checkSoftwareItem();
 }
 
 bool ShadowedRectangle::isSoftwareRendering() const
 {
     return (window() && window()->rendererInterface()->graphicsApi() == QSGRendererInterface::Software) || m_renderType == RenderType::Software;
 }
 
 PaintedRectangleItem *ShadowedRectangle::softwareItem() const
 {
     return m_softwareItem;
 }
 
 void ShadowedRectangle::itemChange(QQuickItem::ItemChange change, const QQuickItem::ItemChangeData &value)
 {
     if (change == QQuickItem::ItemSceneChange && value.window) {
         checkSoftwareItem();
         // TODO: only conditionally emit?
         Q_EMIT softwareRenderingChanged();
     }
 
     QQuickItem::itemChange(change, value);
 }
 
 QSGNode *ShadowedRectangle::updatePaintNode(QSGNode *node, QQuickItem::UpdatePaintNodeData *data)
 {
     Q_UNUSED(data);
 
     if (boundingRect().isEmpty()) {
         delete node;
         return nullptr;
     }
 
     auto shadowNode = static_cast<ShadowedRectangleNode *>(node);
 
     if (!shadowNode) {
         shadowNode = new ShadowedRectangleNode{};
 
         // Cache lowPower state so we only execute the full check once.
         static bool lowPower = QByteArrayList{"1", "true"}.contains(qgetenv("KIRIGAMI_LOWPOWER_HARDWARE").toLower());
         if (m_renderType == RenderType::LowQuality || (m_renderType == RenderType::Auto && lowPower)) {
             shadowNode->setShaderType(ShadowedRectangleMaterial::ShaderType::LowPower);
         }
     }
 
     shadowNode->setBorderEnabled(m_border->isEnabled());
     shadowNode->setRect(boundingRect());
     shadowNode->setSize(m_shadow->size());
     shadowNode->setRadius(m_corners->toVector4D(m_radius));
     shadowNode->setOffset(QVector2D{float(m_shadow->xOffset()), float(m_shadow->yOffset())});
     shadowNode->setColor(m_color);
     shadowNode->setShadowColor(m_shadow->color());
     shadowNode->setBorderWidth(m_border->width());
     shadowNode->setBorderColor(m_border->color());
     shadowNode->updateGeometry();
     return shadowNode;
 }
 
 void ShadowedRectangle::checkSoftwareItem()
 {
     if (!m_softwareItem && isSoftwareRendering()) {
         m_softwareItem = new PaintedRectangleItem{this};
         // The software item is added as a "normal" child item, this means it
         // will be part of the normal item sort order. Since there is no way to
         // control the ordering of children, just make sure to have a very low Z
         // value for the child, to force it to be the lowest item.
         m_softwareItem->setZ(-99.0);
 
         auto updateItem = [this]() {
             auto borderWidth = m_border->width();
             auto rect = boundingRect();
             m_softwareItem->setSize(rect.size());
             m_softwareItem->setColor(m_color);
             m_softwareItem->setRadius(m_radius);
             m_softwareItem->setBorderWidth(borderWidth);
             m_softwareItem->setBorderColor(m_border->color());
         };
 
         updateItem();
 
         connect(this, &ShadowedRectangle::widthChanged, m_softwareItem, updateItem);
         connect(this, &ShadowedRectangle::heightChanged, m_softwareItem, updateItem);
         connect(this, &ShadowedRectangle::colorChanged, m_softwareItem, updateItem);
         connect(this, &ShadowedRectangle::radiusChanged, m_softwareItem, updateItem);
         connect(m_border.get(), &BorderGroup::changed, m_softwareItem, updateItem);
         setFlag(QQuickItem::ItemHasContents, false);
     }
 }
 
 #include "moc_shadowedrectangle.cpp"