37 lines
1.2 KiB
C++
37 lines
1.2 KiB
C++
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// MyGraphicsView.cpp
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#include "MyGraphicsView.h"
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MyGraphicsView::MyGraphicsView(QGraphicsScene *scene, QWidget *parent)
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: QGraphicsView(scene, parent)
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{
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// 在构造函数中，可以设置一些视图属性，比如视口更新模式
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// setViewportUpdateMode(QGraphicsView::FullViewportUpdate);
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this->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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this->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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// 让view的背景透明（可选），以便与窗口背景融合
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this->setStyleSheet("background: transparent;");
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this->setFrameShape(QFrame::NoFrame);
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this->setContentsMargins(0, 0, 0, 0);
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}
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void MyGraphicsView::setGraphicsProxyWidget(QGraphicsProxyWidget* proxy)
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{
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m_proxy = proxy;
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}
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void MyGraphicsView::resizeEvent(QResizeEvent *event)
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{
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// 1. 首先调用父类的 resizeEvent，这是必须的[reference:4]！
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QGraphicsView::resizeEvent(event);
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// 2. 确保场景存在，然后进行适配
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// if (scene()) {
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// // 获取场景中所有 items 的边界矩形
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// QRectF itemsRect = scene()->itemsBoundingRect();
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// if (!itemsRect.isNull()) {
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// // 将视图适配到 items 的边界矩形，并保持宽高比
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// fitInView(itemsRect, Qt::KeepAspectRatio);
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// }
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// }
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}
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