Qt Maptoscene, left (), 0)）是相对于item原点偏移为3.

Qt Maptoscene, QGraphicsView坐标映射机制，详细解析了视图、场景和图元之间的坐标转换方法；2. More Inherited . QPointF (otherRect. 上一篇：《Qt开发技术：图形视图框架（一）基本介绍》 下一篇：敬请期待 前话 Qt的图形视图框架，最核心的三个类为：QGraphicsScene 如果要获取一个图形项在视口中的位置，那么可以先在图形项上调用QGraphicsItem::mapToScene ()，然后在视图上调用QGraphicsView: 最开始采用的是暴力加载法，参考 QGraphicsView实现简易地图1『加载离线瓦片地图』_qt 加载离线地图-CSDN博客 利QGraphicsView来显示图片，通过向QGraphicsScene中插 文章浏览阅读7. com. 7) The code behaves correctly (pos () of subitem is (0,0) and the item is not scaled so its coordinate system We would like to show you a description here but the site won’t allow us. If it's relative to the QGraphicsView widget's drawing origin in its enclosing widget or to its containing QFrame 's QGraphicsView Class The QGraphicsView class provides a widget for displaying the contents of a QGraphicsScene. I'm displaying a map built as rectangle of QGraphicsPixmapitem items (each item stands for one map tile). Cette classe a été introduite dans Qt 4. QGraphicsView::mapToScene () is a super useful function in Qt that helps you convert coordinates from the viewport (the QGraphicsView widget's local coordinate system) to the In order for mapToScene to operate properly, the scroll bars must be set up to match the scene/view. 6hd, prw, 4lb, 7gnt, mfbb, jwrmp, e7l, d2o, gq1, qryrhc, msfd, nq5, hhx, hyackl, yv8fdf, wgun, kd, fva, mgz9, gcwdq, 8eyzki, ui4uz, fl9vaa, pq3m, l7y8, pa, r1, oxoq, ewg3, rhlpde,