Fitinview qt
Web我最初在QGraphicsView加載圖像並使用此方法進行基本縮小和放大功能。 但是，我無法使用Graphics_view_zoom類的eventFilter函數中的mapToScene功能檢索實際圖像像素位置。 下面的代碼產生的行為與Windows照片查看器僅縮放選定區域完全相同。 MapToScene()返回與鼠標事件位置相同的Point 。 WebMar 26, 2015 · FitInView. 原来只要计算好显示面积大小，然后使用该函数就可以完成效果，这样一来可以使用获得场景中items的boundingRect就可以了。. fitInView (moScneeRect); 通过这个函数又在需要解决将查找到 …
Fitinview qt
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WebPySide6.QtWidgets.QGraphicsView. fitInView (item [, aspectRadioMode=Qt.IgnoreAspectRatio]) # Parameters: item – PySide6.QtWidgets.QGraphicsItem. aspectRadioMode – AspectRatioMode. This is an overloaded function. Ensures that item fits tightly inside the view, scaling the view … WebJan 4, 2024 · You should avoid re-creating the pixmap, once you have it with the correct size, just memcpy the content of the processed frame into place. You should also avoid calling fitInView from that external thread. GUI operation should only happen in the GUI thread. You're lucky it doesn't crash.
WebApr 4, 2024 · 我有一个 pyqt GUI，我有一个 window，当我单击一个按钮 称为 显示图像 时，它需要显示一个 output 图像。 我已经制作了功能并将它们链接到按钮，但是当我按下按钮时，图像不显示。 有人可以帮助我以正确的方式实现这一目标吗 这是我的代码： adsbygoogle window.ads WebMar 10, 2012 · ui->graphicsView->fitInView( scene->sceneRect(), Qt::KeepAspectRatio); @ msx_br - Brazil (Netherlands) 1 Reply Last reply Reply Quote 0. A. adnan last edited by . …
WebJul 13, 2024 · I have code that display image with its name on listWidget . In that case the image won't fit in the graphics view.I tested some of resizing methods.But it doesn't work.Please take a look my code. directory. setNameFilters ( { "*.png", "*.jpg" }); for ( const QFileInfo & finfo: directory. entryInfoList ()) { auto imageObject = new QImage ... WebJan 28, 2024 · JonB @Pl45m4 28 Jan 2024, 09:07. @Pl45m4 said in Exact correct size needed: AFAIK, 1 or 2 px difference is still enough to trigger the scrollBars. Indeed. But while it starts out like that, when the window is "large", as I make the window "small" the unscrolled area increases to like half the total width or height.
WebFor example: scene = QGraphicsScene() scene.addText("Hello, world!") view = QGraphicsView(scene) view.show() You can explicitly scroll to any position on the scene …
WebMar 11, 2012 · ui->graphicsView->fitInView( scene->sceneRect(), Qt::KeepAspectRatio); @ msx_br - Brazil (Netherlands) 1 Reply Last reply Reply Quote 0. A. adnan last edited by . O thanks! but it works only when screen is maximized, if i change the window size the scroll bars appear again. Perhaps, i have to use this in resize event. firth concrete whangareiWebQGraphicsView：：fitInView（const QRectF &rect， Qt：：AspectRatioMode aspectRatioMode = Qt：：IgnoreAspectRatio） QRectF为区域，当该区域为空，或视图太小时，不会执行任何操作 firth concrete taurangaWebNov 26, 2014 · view->fitInView(0, 0, width, height, Qt::KeepAspectRatio); @ 1 Reply Last reply Reply Quote 0. T. Tectu last edited by . Well, for some reason the "coordinate resolution" is not quite right after calling QGraphicsView::fitInView. When I place an item at 0/0 it is not at the border. camping le picouty payracWebPyQt Examples（PyQt各种测试和例子） PyQt4 PyQt5. Contribute to PyQt5/PyQt development by creating an account on GitHub. camping le picoutyWebvoid QGraphicsView:: fitInView (const QRectF &rect, Qt::AspectRatioMode aspectRatioMode = Qt::IgnoreAspectRatio) Scales the view matrix and scrolls the scroll bars to ensure that the scene rectangle rect fits inside the viewport. rect must be inside the scene rect; otherwise, fitInView() cannot guarantee that the whole rect is visible. firth clothingWebMar 31, 2016 · I'm sorry for being blunt, but your code is hard to read. The main reason for this is that you consistently use arcane names like test, list, ext and v for data members, which leads to confusion as it's really hard to understand what they represent. Instead, use descriptive names, both for data and functions.Think of an outsider who hasn't written … firth consultantsWebQGraphicsView visualizes the contents of a QGraphicsScene in a scrollable viewport. To create a scene with geometrical items, see QGraphicsScene ‘s documentation. QGraphicsView is part of the Graphics View Framework.. To visualize a scene, you start by constructing a QGraphicsView object, passing the address of the scene you want to … firth concrete taupo