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| author | Andreas Hartmetz <andreas.hartmetz@kdab.com> | 2016-01-14 00:15:37 +0100 |
|---|---|---|
| committer | Jani Heikkinen <jani.heikkinen@theqtcompany.com> | 2016-02-05 09:05:10 +0000 |
| commit | d870ea28656a2155c39a1aabefa1c56871a017e4 (patch) | |
| tree | f5c5d14fb4edf63ad0b8ae1844500cecd55d68e9 /src/quick/items/qquickitem.h | |
| parent | d444d21a517c45c0fda0bdf955cbda61e0088be6 (diff) | |
Rerender natively rendered text items when DPI scaling changes.
The whole purpose of native rendering is to optimize precisely for a
given pixel grid.
DPI scaling can change when either settings of the current screen are
changed, or when the window is moved to a different screen.
Details:
- add an ItemDevicePixelRatioHasChanged item change event
- detect DPI scaling changes by watching screen (identity) and screen
config changes
- when DPI scaling changes, recursively send an
ItemDevicePixelRatioHasChanged signal to all items with content
- when a natively renderet TextItem catches such an event, call
updateLayout() which automatically picks up the new logical DPI
Task-number: QTBUG-49019
Change-Id: I9f4f8d1a7f2c172ed26c276294ab143161c4a48b
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@theqtcompany.com>
Diffstat (limited to 'src/quick/items/qquickitem.h')
| -rw-r--r-- | src/quick/items/qquickitem.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/quick/items/qquickitem.h b/src/quick/items/qquickitem.h index d92910ce9c..bda6dd4da5 100644 --- a/src/quick/items/qquickitem.h +++ b/src/quick/items/qquickitem.h @@ -166,7 +166,8 @@ public: ItemOpacityHasChanged, // value.realValue ItemActiveFocusHasChanged, // value.boolValue ItemRotationHasChanged, // value.realValue - ItemAntialiasingHasChanged // value.boolValue + ItemAntialiasingHasChanged, // value.boolValue + ItemDevicePixelRatioHasChanged // value.realValue }; union ItemChangeData { |