diff options
author | Jocelyn Turcotte <jturcotte@woboq.com> | 2017-01-17 17:05:00 +0100 |
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committer | Jocelyn Turcotte (Woboq GmbH) <jturcotte@woboq.com> | 2017-01-23 18:42:26 +0000 |
commit | dd52fd0024600d3beffc82d6da02b4239a62d725 (patch) | |
tree | 42dd52f4aa23179601792b1794f7b8ec3c1d1971 /src/plugins/platforms/windows/qwindowsscreen.cpp | |
parent | aa8fb3608952ab9f344e2b6beb7e083908c8d905 (diff) |
Ensure a pixel density of at least 1 for Qt::AA_EnableHighDpiScaling
Very large 1080p TVs or any display which is running at an abnormally
low resolution can have a DPI lower than 48, which means that
qRound(dpi/96) will result in a 0 pixel density, causing critical
issues for applications using Qt::AA_EnableHighDpiScaling.
Make sure that we always have a pixel density of at least 1 to allow
applications not having to worry about such displays.
Task-number: QTBUG-56140
Change-Id: I1dafbf7794a99ae6f872984c0337d8ff0d1fc1c0
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Diffstat (limited to 'src/plugins/platforms/windows/qwindowsscreen.cpp')
-rw-r--r-- | src/plugins/platforms/windows/qwindowsscreen.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/plugins/platforms/windows/qwindowsscreen.cpp b/src/plugins/platforms/windows/qwindowsscreen.cpp index 7a885b462e..c70323c06f 100644 --- a/src/plugins/platforms/windows/qwindowsscreen.cpp +++ b/src/plugins/platforms/windows/qwindowsscreen.cpp @@ -265,7 +265,7 @@ qreal QWindowsScreen::pixelDensity() const // the pixel density since it is reflects the Windows UI scaling. // High DPI auto scaling should be disabled when the user chooses // small fonts on a High DPI monitor, resulting in lower logical DPI. - return qRound(logicalDpi().first / 96); + return qMax(1, qRound(logicalDpi().first / 96)); } /*! |