qt5base-lts/tests
Volker Hilsheimer 32edae5e26 Fix restoring main window state for maximized/fullscreen windows
On systems that asynchronously resize the window to maximized or full
screen state, the window will become visible in its normal geometry
before it gets the final size by the windowing system. This might cause
multiple resize events, to each of which the widget's layout responds
with a call to its setGeometry implementation.

The QMainWindowLayout is special in that it will shrink dock widgets if
there is not enough space for them, but it doesn't grow them back once
there is. With the initial resize event being for a smaller size than
what was restored, the state is not restored correctly, but remains in
the state that fit into the smallest size with which setGeometry got
called.

To fix this, we have to keep the restored state around until the window
either gets a size that is large enough for it to fit, or until we can
be reasonably certain that the windowing system is done resizing the
window while transitioning it to the maximized or full screen state.
Since across the various platforms and windowing systems there is no
reliable way to know when the window reaches its final size, we have
to use a timer that we (re)start for each call to setGeometry with a
size that's not large enough. Once the timer times out, we have to
give up; then the last layout state calculated is the final state.

To calculate the size of the layout, introduce a function to the
QDockAreaLayout that returns the size required for the current sizes
of the docks. Refactor sizeHint and minimumSize (which were identical)
into a helper template that takes member-function pointers to call the
respective method from the dock area layout's content items.

Add a test case for various permutations of the scenario. The timeout
of 150ms is based on running this test case repeatedly on various
desktop platforms and X11 window managers.

Fixes: QTBUG-46620
Change-Id: I489675c2c40d3308ac8194aeb4267172b2fb38be
Reviewed-by: Albert Astals Cid <albert.astals.cid@kdab.com>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
2021-10-16 09:46:22 +02:00
..
auto Fix restoring main window state for maximized/fullscreen windows 2021-10-16 09:46:22 +02:00
baselineserver Remove fatuously true or false QT_VERSION checks 2021-09-23 16:57:03 +02:00
benchmarks Remove checks for C++ standard versions C++17 and below 2021-10-01 02:46:09 +02:00
global tst_bic: Add linux-gcc-ia32 bic data for QtXml 2013-01-16 08:25:28 +01:00
libfuzzer CMake: Bump almost all cmake_minimum_required calls to 3.16 2021-09-22 19:36:49 +02:00
manual QNI: Update the manual test 'transportMedium' naming 2021-10-07 19:08:51 +02:00
shared locale: INTEGRITY does not define LC_MEASUREMENTS 2021-09-21 17:56:54 +00:00
testserver Network self-test: make it work with docker/containers 2020-11-17 19:56:06 +01:00
CMakeLists.txt CMake: Refactor optimization flag handling and add optimize_full 2020-10-06 10:07:05 +02:00
README Doc: Fix references to Qt Test 2013-01-30 01:35:06 +01:00

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.