b5f972361a
The explicit paint event on QtGui and QPA level allows us to untangle
the expose event, which today has at least 3 different meanings.
It also allows us to follow the platform more closely in its semantics
of when painting can happen. On some platforms a paint can come in
before a window is exposed, e.g. to prepare the first frame. On others
a paint can come in after a window has been de-exposed, to save a
snapshot of the window for use in an application switcher or similar.
The expose keeps its semantics of being a barrier signaling that the
application can now render at will, for example in a threaded render
loop.
There are two compatibility code paths in this patch:
1. For platform plugins that do not yet report the PaintEvents
capability, QtGui will synthesize paint events on the platform's
behalf, based on the existing expose events coming from the platform.
2. For applications that do not yet implement paintEvent, QtGui will
send expose events instead, ensuring the same behavior as before.
For now none of the platform plugins deliver paint events natively,
so the first compatibility code path is always active.
Task-numnber: QTBUG-82676
Change-Id: I0fbe0d4cf451d6a1f07f5eab8d376a6c8a53ce8c
Reviewed-by: Paul Olav Tvete <paul.tvete@qt.io>
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| .. | ||
| auto | ||
| baselineserver | ||
| benchmarks | ||
| global | ||
| libfuzzer | ||
| manual | ||
| shared | ||
| testserver | ||
| .prev_CMakeLists.txt | ||
| CMakeLists.txt | ||
| README | ||
| tests.pro | ||
This directory contains autotests and benchmarks based on Qt Test. In order
to run the autotests reliably, you need to configure a desktop to match the
test environment that these tests are written for.
Linux X11:
* The user must be logged in to an active desktop; you can't run the
autotests without a valid DISPLAY that allows X11 connections.
* The tests are run against a KDE3 or KDE4 desktop.
* Window manager uses "click to focus", and not "focus follows mouse". Many
tests move the mouse cursor around and expect this to not affect focus
and activation.
* Disable "click to activate", i.e., when a window is opened, the window
manager should automatically activate it (give it input focus) and not
wait for the user to click the window.