Opt-in by setting android.app.auto_screen_scale_factor to true in AndroidManifest.xml. This will enable devicePixelRatio scaling in QtGui using a scale factor provided by Android DisplayMetrics. Note that the Android style is not currently supported: it already accounts for different display densities which results in incorrect visual sizes when enabling devicePixelRatio scaling. Implementation: Bring DisplayMetrics::density through to setDisplayMetrics in androidjnimain.cpp, similar to what is done for "scaledDensity". Override QPlatformScreen::pixelDensity(), which forwards the scale factor to QtGui. [The difference between "density" and "scaledDensity" is that the former is a physical display density factor which corresponds closely to devicePixelRatio in Qt, while the latter also includes the Android global font scale factor.] Scale the global font pixel size in qandroidplatformtheme.cpp to keep the visual font size constant. Based on an initial patch from Daiwei Li <daiweili@suitabletech.com> Task-number: QTBUG-46615 Change-Id: Ia51f99bf6dda485a57413949246c7b32cb47e8dd Reviewed-by: BogDan Vatra <bogdan@kdab.com> |
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| .. | ||
| res/values | ||
| AndroidManifest.xml | ||
| build.gradle | ||
| templates.pro | ||