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  1. Qt
  2. QTBUG-46846

QLabel scaledContents broken on high resolution (retina) displays

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Details

    • Bug
    • Resolution: Done
    • P1: Critical
    • 5.6.1
    • 5.5.0 RC, 5.5.0, 5.5.1, 5.6.0 Alpha, 5.6.0
    • Widgets: Widgets and Dialogs
    • None
    • Mac OS 10.10.x, 10.11.x
      Retina Display (e.g. iMac Retina)
      Windows 8.1
      High DPI display (with QT_DEVICE_PIXEL_RATIO=auto)
    • macOS
    • 65aff4dc422f53faa44e961850cb4f1e4501a8c7

    Description

      Simple steps to reproduce:

      • Create new widget with Qt Designer
      • Add QLabel to widget
      • Set pixmap of QLabel to some bitmap file (e.g. the Qt logo)
      • Set property 'scaledContents' to 'true'

      Bitmap is scaled down but still about double as large as it should be (see screenshot).
      Affects both Qt Designer as well as Qt applications using QLabels with bitmaps.

      Attachments

        Issue Links

          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-47844 [Regression] QLabel scaledContents stretches its pixmap way beyond its size

          • 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-49040 QLabel pixmap incorrectly scaled on Retina display

          • 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-49108 QLabel setpixmap is creating a pixmap several times larger than the label... (Regression)

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
          For Gerrit Dashboard: QTBUG-46846
          # Subject Branch Project Status CR V
          127002,4 Fix regression in scaled QLabel on hi-res display. 5.6 qt/qtbase Status: MERGED +2 0

          Activity

            People

              sorvig Morten Sørvig
              drew Drew
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              5 Vote for this issue
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              12 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved:

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