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Update setHighDpiScaleFactorRoundingPolicy docs

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The default is now passthrough. And let's not mention the
environment variable overrides, as they are meant for internal
testing.

Pick-to: 6.0
Pick-to: 6.0.0
Change-Id: Ie2409e5411d4bdcdf041834cb5ca9e1215aa173a
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
This commit is contained in:
Tor Arne Vestbø 2020-11-27 11:56:10 +01:00
parent 05bb9b1016
commit 58afadc624
2 changed files with 4 additions and 8 deletions
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3
src/corelib/global/qnamespace.qdoc
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@ -3238,8 +3238,7 @@
decide how non-integer scale factors (such as Windows 150%) are handled. decide how non-integer scale factors (such as Windows 150%) are handled.
The active policy is set by calling QGuiApplication::setHighDdpiScaleFactorRoundingPolicy() before The active policy is set by calling QGuiApplication::setHighDdpiScaleFactorRoundingPolicy() before
the application object is created, or by setting the QT_SCALE_FACTOR_ROUNDING_POLICY the application object is created.
environment variable.
\sa QGuiApplication::setHighDpiScaleFactorRoundingPolicy() \sa QGuiApplication::setHighDpiScaleFactorRoundingPolicy()

9
src/gui/kernel/qguiapplication.cpp
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@ -3633,14 +3633,11 @@ Qt::ApplicationState QGuiApplication::applicationState()
("small UI") or as 2x ("large UI"). See the Qt::HighDpiScaleFactorRoundingPolicy ("small UI") or as 2x ("large UI"). See the Qt::HighDpiScaleFactorRoundingPolicy
enum for a complete list of all options. enum for a complete list of all options.
This function must be called before creating the application object, This function must be called before creating the application object.
and can be overridden by setting the QT_SCALE_FACTOR_ROUNDING_POLICY The QGuiApplication::highDpiScaleFactorRoundingPolicy()
environment variable. The QGuiApplication::highDpiScaleFactorRoundingPolicy()
accessor will reflect the environment, if set. accessor will reflect the environment, if set.
The default value is Qt::HighDpiScaleFactorRoundingPolicy::Round. The default value is Qt::HighDpiScaleFactorRoundingPolicy::PassThrough.
On Qt for Android the default is Qt::HighDpiScaleFactorRoundingPolicy::PassThrough,
which preserves historical behavior from earlier Qt versions.
*/ */
void QGuiApplication::setHighDpiScaleFactorRoundingPolicy(Qt::HighDpiScaleFactorRoundingPolicy policy) void QGuiApplication::setHighDpiScaleFactorRoundingPolicy(Qt::HighDpiScaleFactorRoundingPolicy policy)
{ {