Revision control
++ Qt 5.12 introduces many new features and improvements as well as bugfixes
++ over the 5.11.x series. For more details, refer to the online documentation
++ included in this distribution. The documentation is also available online:
++
++
++ The Qt version 5.12 series is binary compatible with the 5.11.x series.
++ Applications compiled for 5.11 will continue to run with 5.12.
++
++ Some of the changes listed in this file include issue tracking numbers
++ corresponding to tasks in the Qt Bug Tracker:
++
++
++ Each of these identifiers can be entered in the bug tracker to obtain more
++ information about a particular change.
++
++ ****************************************************************************
++ * QtLocation *
++ ****************************************************************************
++
++
++ - Added QDeclarativeGeoRoute::equals to perform deep comparisons in QML.
++ - MapItemView now exposes add and remove transitions, so that they can
++ be changed (defaults are none for add, and item fade out for remove).
++ - Enabled incremental updates in PlaceSearchModel, which prevents previousPage or
++ nextPage from resetting the model, but rather appending the new data to it.
++ - [QTBUG-68966] Added Map.visibleArea property.
++ - [QTBUG-62683][QTBUG-62397] Enabled nesting of MapItemView. This required
++ a behavioral change, as MapItemView is now a MapItemGroup, not anymore a
++ plain QObject. Due to a bug, MapItemView was previously not a Qt Quick
++ Item, making it possible to create it as a child of any QObject. This
++ has now been fixed, so if you happen to have a MapItemView in your scene
++ which is not a child of a Qt Quick Item, you will get an error message.
++ - Enabled asynchronous incremental updates of QPlaceReply.
++ - Changed QDeclarativeGeoMapItemBase::geoShape property from read-only into R/W.
++ - Added support for route legs.
++ - [QTBUG-70499] Fixed HERE plugin requesting the route incorrectly.
++ - Added ESRI place search manager to the ESRI plugin.
++
++ ****************************************************************************
++ * QtPositioning *
++ ****************************************************************************
++
++ - Exposed mercatorToCoord and coordToMercator to QML.
++ - [QTBUG-62875] QGeoPath can now be cleared directly using clearPath.
++ - Added QGeoPolygon::perimeter property.
++ - Added holes support to QGeoPolygon. Currently visualized only when using
++ in a MapPolygon with the MapboxGL plugin.
++ - [QTBUG-43435] Added Geoclue2 position plugin.
++ - [QTBUG-52660] QtPositioning now properly checks for authorization on iOS.
++