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Morten Johan Sørvig b2d24dc347 Android: Add opt-in high-dpi support
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>
2015-10-26 09:27:54 +00:00
bin syncqt: complain if a public header includes a private one 2015-10-15 16:20:37 +00:00
config.tests Separate KMS and GBM tests 2015-10-14 11:39:26 +00:00
dist Update the Qt 5.5.1 changelog for qtbase 2015-09-23 06:49:28 +00:00
doc Doc: Improve selection of offline template type 2015-10-21 08:15:35 +00:00
examples TextEdit example: fix build when clipboard is disabled. 2015-10-19 14:56:45 +00:00
lib Initial import from the monolithic Qt. 2011-04-27 12:05:43 +02:00
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qmake support relative paths in QMAKE_RPATHDIR 2015-10-20 17:18:16 +00:00
src Android: Add opt-in high-dpi support 2015-10-26 09:27:54 +00:00
tests Autotest: remove AIX-related QT_POINTER_SIZE code 2015-10-23 18:10:22 +00:00
tools Configure: don't enable the WMF multimedia backend by default. 2015-10-23 13:45:18 +00:00
util Fix a #! first line. 2015-09-30 18:26:06 +00:00
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