82 lines
2.2 KiB
C++
82 lines
2.2 KiB
C++
#include "graphicsItem/electricSvgItemPT.h"
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#include "global.h"
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#include <QSvgRenderer>
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#include <QPainter>
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#include <QStyleOption>
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#include <QGraphicsScene>
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#include <QGraphicsView>
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ElectricSvgItemPT::ElectricSvgItemPT(const QRect &rect, QGraphicsItem *parent)
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: ElectricSvgItem(rect,parent)
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{
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initial();
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}
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ElectricSvgItemPT::ElectricSvgItemPT(const ElectricSvgItemPT& obj)
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: ElectricSvgItem(obj)
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{
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initial();
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_itemType = obj._itemType;
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}
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ElectricSvgItemPT::~ElectricSvgItemPT()
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{
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}
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ElectricSvgItemPT* ElectricSvgItemPT::clone() const
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{
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return new ElectricSvgItemPT(*this);
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}
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void ElectricSvgItemPT::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
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{
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if(_curMonitorStateEnable){
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painter->setRenderHint(QPainter::Antialiasing);
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QSize imageSize = m_boundingRect.size().toSize();
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if (imageSize.isEmpty()) return;
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// 1. 渲染SVG到图像
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QImage sourceImage(imageSize, QImage::Format_ARGB32_Premultiplied);
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sourceImage.fill(Qt::transparent);
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QPainter sourcePainter(&sourceImage);
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sourcePainter.setRenderHint(QPainter::Antialiasing);
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m_pCustomRender->render(&sourcePainter, QRectF(0, 0, imageSize.width(), imageSize.height()));
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sourcePainter.end();
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// 2. 直接使用合成模式改变颜色（更高效）
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QImage resultImage(imageSize, QImage::Format_ARGB32_Premultiplied);
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resultImage.fill(Qt::transparent);
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QPainter resultPainter(&resultImage);
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// 先绘制原始SVG（保留透明度）
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resultPainter.drawImage(0, 0, sourceImage);
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// 然后对非透明区域应用颜色叠加
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resultPainter.setCompositionMode(QPainter::CompositionMode_SourceIn);
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resultPainter.fillRect(resultImage.rect(), QColor(_curMonitorStateColor));
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resultPainter.end();
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// 3. 最终绘制
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painter->drawImage(m_boundingRect, resultImage);
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}
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else{
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if (!m_pRender || !m_pRender->isValid())
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return;
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m_pRender->render(painter, m_boundingRect);
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}
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}
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void ElectricSvgItemPT::initial()
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{
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setFlag(QGraphicsItem::ItemIsSelectable, false);
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setFlag(QGraphicsItem::ItemIsFocusable, false);
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setAcceptedMouseButtons(Qt::NoButton);
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}
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