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| author | Morten Johan Sørvig <morten.sorvig@qt.io> | 2021-03-16 17:17:53 +0100 |
|---|---|---|
| committer | Morten Johan Sørvig <morten.sorvig@qt.io> | 2021-04-28 18:23:39 +0200 |
| commit | 776734576c2ba7bd4bdba6e09bc5dad5e093670a (patch) | |
| tree | 028b1e49034726bf3c26e3040af4dffad191312d /src/plugins/platforms/xcb | |
| parent | dd24b61d355cad2cbd29c82fc30b2335b059a187 (diff) | |
Call updateHighDpiScaling() on screenAdded()
QHighDpiScaling has two init/update functions:
- initHighDpiScaling(): called once during QGuiApplication construction
- updateHighDpiScaling(): called whenever (relevant) screen configuration changes
Currently the calls to updateHighDpiScaling() are made from
multiple places including platform code. Simplify by calling
it from two locations:
- QWindowSystemInterface::handleScreenAdded()
- QGuiApplicationPrivate::processScreenLogicalDotsPerInchChange()
Replace comment about early calls to qt_defaultDpi with a
test which calls qt_defaultDpiX/Y with no screens attached.
(Looking at the qt_defaultDpiX() implementation, it is unlikely
that there will be a problem as long as updateHighDpiScaling()
is called before QGuiApplication::primaryScreen() starts returning
a non-null value.)
Change-Id: I447db42894617495843a5cb531a1322b000fed62
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
Diffstat (limited to 'src/plugins/platforms/xcb')
| -rw-r--r-- | src/plugins/platforms/xcb/qxcbconnection_screens.cpp | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/src/plugins/platforms/xcb/qxcbconnection_screens.cpp b/src/plugins/platforms/xcb/qxcbconnection_screens.cpp index 2e48826635..867bbef020 100644 --- a/src/plugins/platforms/xcb/qxcbconnection_screens.cpp +++ b/src/plugins/platforms/xcb/qxcbconnection_screens.cpp @@ -156,7 +156,6 @@ void QXcbConnection::updateScreens(const xcb_randr_notify_event_t *event) screen = createScreen(virtualDesktop, output, outputInfo.get()); qCDebug(lcQpaScreen) << "output" << screen->name() << "is connected and enabled"; } - QHighDpiScaling::updateHighDpiScaling(); } } else if (screen) { if (output.crtc == XCB_NONE && output.mode == XCB_NONE) { |