From dd52fd0024600d3beffc82d6da02b4239a62d725 Mon Sep 17 00:00:00 2001 From: Jocelyn Turcotte Date: Tue, 17 Jan 2017 17:05:00 +0100 Subject: 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 Reviewed-by: Friedemann Kleint --- src/plugins/platforms/windows/qwindowsscreen.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'src/plugins/platforms/windows/qwindowsscreen.cpp') 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)); } /*! -- cgit v1.2.3