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  1. Qt
  2. QTBUG-45975

MacOS: QOpenGLWindow contained in QMainWindow flickers when being resized programmatically

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Details

    • Bug
    • Resolution: Done
    • P1: Critical
    • 5.10
    • 5.4.1, 5.5.0 Beta
    • QPA
    • Qt 5.4.1, OS-X 10.9
    • macOS

    Description

      I have the following setup: a QOpenGLWindow is packaged into a widget via QWidget::createWindowContainer(), then put into a QMainWindow as a centralWidget. When grabbing the application window's corner and resizing it via the OS'es resize handles, everything is fine. When doing an explicit resize() call on the QMainWindow, however, flickering occurs.

      This used to work on 5.4.0 and seems to be broken since 5.4.1. Mac only.

      I've attached a minimal repro with the above architecture. If you run it and grab the window border to resize it, everything is fine. If you click + move in the red client area however, resize() is being called explicitly on the main window and this causes flickering (at least when shrinking the window)

      Attachments

        1. QWindowAsQWidgetTEST.zip
          3 kB
          Wolfgang Schneider
        2. QWindowAsQWidgetTESTUserQWidget.zip
          5 kB
          tim blechmann

        Issue Links

          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-53425 [OSX 10.10] [OS X 10.9] Drawing issues with Q3DSurface

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-52711 Window flickers when resized on OS X

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed

          Task - A task that needs to be done. QTBUG-50414 OS X: Move expose event handling to [QNSView drawRect]

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
          is required for

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-45762 Issues for NI

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-41010 [qmacnativewidget] macnativewidget not draw when events processed before being added to window

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-51140 Qt 5.5.x flickering by dragging QSizeGrip (but ok on 5.4.2 and less) on (at least) Mac OS X 10.10

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
          For Gerrit Dashboard: QTBUG-45975
          # Subject Branch Project Status CR V
          125312,3 Cocoa: Stop flicker on programatic window resize 5.6 qt/qtbase Status: ABANDONED +2 0
          148891,1 QCocoaWindow::setCocoaGeometry - avoid displayIfNeeded 5.6 qt/qtbase Status: ABANDONED 0 0

          Activity

            People

              vestbo Tor Arne Vestbø
              woolfman007 Wolfgang Schneider
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              Dates

                Created:
                Updated:
                Resolved:

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