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  1. Qt
  2. QTBUG-50938

XCB: Drag and drop shaped pixmap window doesn't respect HiDPI scaling

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    • Icon: Bug Bug
    • Resolution: Done
    • Icon: P2: Important P2: Important
    • None
    • 5.6.0 Beta
    • GUI: Drag and Drop, GUI: Painting
    • None
    • Linux/X11
    • Scale mask: 42f788ffe26d67864d569c3a3044619d49fc693a (qtbase/5.6, 10.2.2016, 5.6.1)

      Drag and drop shaped pixmap window doesn't respect HiDPI scaling, so the the pixmap is e.g. small and clipped.

      Several aspects here:

      • QShapedPixmapWindow is clipped if the DnD pixmap has a mask since QWindow::setMask() does not scale the mask (as opposed to QWidget::setMask()). This is the case for item view DnD (QTBUG-46068) but not for tests/manual/highdpi. To reproduce: Use example from QTBUG-46068 with scaling.
      • QShapedPixmapWindow has the wrong size if the pixmap has a DPR != 1. To reproduce: Apply https://codereview.qt-project.org/#/c/148747/ , drag text with scaling, note white border around DnD window.

        1. qtbug50938_diag.diff
          4 kB
          Friedemann Kleint
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            tvete Paul Olav Tvete
            zaps166 Błażej Szczygieł
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              Created:
              Updated:
              Resolved:

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