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Volker Hilsheimer 70ad404203 QMainWindow: don't grow memory when modifying tabbed docks while hidden 
QMainWindow tries to avoid memory allocations by caching tab bars that
are no longer used. That cache is populated when the layout is
activated.

The layout might never be activated when the main window is never shown,
in which case adding and removing dock widgets at runtime will
continuously allocate more memory for tab bars that are created.

A workaround is to call QMainWindow::layout()->activate() explicitly in
application code, once all dock widgets have been removed. This change
avoids that applications have to do that.

Change-Id: I70eb585d2120f0b7b73f59c3ee65d7242c12ec59
Fixes: QTBUG-83135
Pick-to: 5.15
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io>
2020-04-24 17:41:02 +02:00
bin Merge remote-tracking branch 'origin/5.15' into dev 2020-04-22 15:28:01 +02:00
cmake CMake: Allow sqldriver plugins to be built as standalone 2020-04-24 07:41:13 +02:00
coin Coin: Fix incorrect target OS values used in instructions 2020-04-02 09:39:27 +02:00
config.tests CMake: Skip regeneration of manual compile test project 2020-04-09 11:26:46 +02:00
dist Add changes file for Qt 5.14.2 2020-03-17 06:16:25 +01:00
doc Merge remote-tracking branch 'origin/5.15' into dev 2020-04-22 15:28:01 +02:00
examples Do not mention Qt XML's SAX API anymore in examples/xml/README 2020-04-24 09:47:41 +02:00
lib Purge all fonts 2015-08-18 19:59:14 +00:00
mkspecs Remove checks for glibc < 2 from qplatformdefs.h files 2020-04-23 06:41:32 +02:00
qmake Merge remote-tracking branch 'origin/5.15' into dev 2020-04-22 15:28:01 +02:00
src QMainWindow: don't grow memory when modifying tabbed docks while hidden 2020-04-24 17:41:02 +02:00
tests Don't send QEvent::Hide to an already hidden top level widget 2020-04-24 17:40:36 +02:00
util QChar: port low-level functions from uint/ushort to char32/16_t 2020-04-24 12:45:53 +02:00
.gitattributes
.gitignore Add .vscode in git ignore list 2020-04-22 20:38:52 -03:00
.qmake.conf Bump version 2019-12-17 12:41:31 +01:00
.tag
CMakeLists.txt CMake: Fix pkgconfig calls when cross-compiling 2020-03-26 12:46:16 +01:00
config_help.txt Merge remote-tracking branch 'origin/5.15' into dev 2020-02-26 18:39:21 +01:00
configure Merge remote-tracking branch 'origin/5.15' into dev 2020-04-08 20:11:39 +02:00
configure.bat Don't compile qmake in c++11 mode 2020-02-03 17:43:30 +01:00
configure.cmake CMake: Port the 'static_runtime' feature 2020-04-23 10:09:15 +02:00
configure.json CMake: Port the 'separate_debug_info' feature 2020-03-06 13:38:37 +01:00
configure.pri Android: Increase minimum API level to Android-23 / Android 6 2020-03-04 08:28:04 +01:00
dependencies.yaml Re-add dependencies.yaml now that qt5.git wip/qt6 builds fine 2019-09-18 13:19:31 +02:00
header.BSD Use placeholder for year in header.* files 2018-04-16 11:02:22 +00:00
header.COMM Use placeholder for year in header.* files 2018-04-16 11:02:22 +00:00
header.FDL Use placeholder for year in header.* files 2018-04-16 11:02:22 +00:00
header.GPL Use placeholder for year in header.* files 2018-04-16 11:02:22 +00:00
header.GPL-EXCEPT Use placeholder for year in header.* files 2018-04-16 11:02:22 +00:00
header.LGPL Use placeholder for year in header.* files 2018-04-16 11:02:22 +00:00
header.LGPL3 Use placeholder for year in header.* files 2018-04-16 11:02:22 +00:00
header.LGPL3-COMM Use placeholder for year in header.* files 2018-04-16 11:02:22 +00:00
header.LGPL-NOGPL2 Use placeholder for year in header.* files 2018-04-16 11:02:22 +00:00
header.LGPL-ONLY Use placeholder for year in header.* files 2018-04-16 11:02:22 +00:00
header.MIT qsimd: add support for new x86 CPU features 2018-05-05 06:20:07 +00:00
INSTALL INSTALL: Remove outdated reference to Windows CE 2019-02-13 13:01:57 +00:00
LICENSE.FDL
LICENSE.GPL2 Add new license header templates and license files 2016-01-14 20:43:46 +00:00
LICENSE.GPL3 Add new license header templates and license files 2016-01-14 20:43:46 +00:00
LICENSE.GPL3-EXCEPT Add new license header templates and license files 2016-01-14 20:43:46 +00:00
LICENSE.LGPL3 Add new license header templates and license files 2016-01-14 20:43:46 +00:00
LICENSE.LGPLv3 Remove LICENSE.GPLv3, LICENSE.LGPLv21, LGPL_EXCEPTION.txt 2018-04-16 11:02:14 +00:00
LICENSE.QT-LICENSE-AGREEMENT Update enterprise license agreement v4.2.1 2019-12-18 13:07:19 +02:00
qtbase.pro nuke configure -host-option 2016-12-13 18:55:59 +00:00
sync.profile Move QOpenGLWidget from QtOpenGL to its own module 2020-02-18 09:22:51 +01:00