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5b09346cf4
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Błażej Szczygieł 5b09346cf4 Widgets: Use accelerated scroll when scrolled widget is overlapped 
Get region of overlapped widgets and scroll only non-overlapped parts
of image. Next, schedule an update for overlapped widgets region.

This patch improves scrolling performance when scrolled widget has
overlapped widgets.

Common use cases:
- faster scrolling when using "StyleHint::SH_ScrollBar_Transient",
- faster scrolling of zoomed image with semi-transparent thumbnail.

Accelerated scrolling with overlapped widgets is not available when
scale factor is non-integer.

Task-number: QTBUG-64504
Change-Id: I8337d3bc756e50f7d31cdc7979ccf86dc5c3695f
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
2018-04-17 06:32:52 +00:00
bin rework syncqt interaction regarding cross-tree paths 2018-04-12 15:42:59 +00:00
config.tests Merge remote-tracking branch 'origin/5.9' into 5.11 2018-02-14 12:51:24 +01:00
dist Merge remote-tracking branch 'origin/5.9' into 5.11 2018-02-14 12:51:24 +01:00
doc Doc: Update Find Files example 2018-04-09 06:50:52 +00:00
examples Merge remote-tracking branch 'origin/5.11' into dev 2018-04-12 22:00:35 +02:00
lib Purge all fonts 2015-08-18 19:59:14 +00:00
mkspecs Merge remote-tracking branch 'origin/5.11' into dev 2018-04-12 22:00:35 +02:00
qmake qmake: fix QMAKE_BUNDLE_DATA for (some) generated files 2018-04-12 15:42:49 +00:00
src Widgets: Use accelerated scroll when scrolled widget is overlapped 2018-04-17 06:32:52 +00:00
tests Merge remote-tracking branch 'origin/5.11' into dev 2018-04-15 01:00:18 +02:00
util Add a note to the CLDR-munging scripts about updating the attribution 2018-02-17 22:22:33 +00:00
.gitattributes Update the git-archive export options 2012-09-07 15:39:31 +02:00
.gitignore gitignore: don't ignore Info.plist templates for libraries 2017-11-23 07:07:48 +00:00
.qmake.conf Bump version 2018-02-20 19:53:08 +01:00
.tag Update the git-archive export options 2012-09-07 15:39:31 +02:00
config_help.txt xcb: Use XCB instead of Xlib for XInput 2018-03-22 20:51:09 +00:00
configure configure: Detect Cocoa instead of Carbon 2018-04-05 21:04:22 +00:00
configure.bat configure: Prefer cl.exe over clang-cl.exe 2018-01-04 21:22:42 +00:00
configure.json Merge remote-tracking branch 'origin/5.11' into dev 2018-03-28 08:12:21 +02:00
configure.pri Configure: Restore default prefix on Windows 2018-04-09 15:32:19 +00:00
header.BSD Add new license header templates and license files 2016-01-14 20:43:46 +00:00
header.COMM Add header template for commercial only modules 2015-10-19 10:37:18 +00:00
header.FDL Add new license header templates and license files 2016-01-14 20:43:46 +00:00
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header.GPL-EXCEPT Add new license header templates and license files 2016-01-14 20:43:46 +00:00
header.LGPL Add new license header templates and license files 2016-01-14 20:43:46 +00:00
header.LGPL3 Update copyright headers 2015-02-11 06:49:51 +00:00
header.LGPL3-COMM Update copyright headers 2015-02-11 06:49:51 +00:00
header.LGPL-NOGPL2 Add new license header templates and license files 2016-01-14 20:43:46 +00:00
header.LGPL-ONLY Update copyright headers 2015-02-11 06:49:51 +00:00
INSTALL Doc: Update links in INSTALL file 2015-02-16 09:06:41 +00:00
LGPL_EXCEPTION.txt Update copyright headers 2015-02-11 06:49:51 +00:00
LICENSE.FDL Initial import from the monolithic Qt. 2011-04-27 12:05:43 +02:00
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LICENSE.GPLv3 Expand license scope from "Qt GUI Toolkit" to "Qt Toolkit" 2016-06-15 07:02:32 +00:00
LICENSE.LGPL3 Add new license header templates and license files 2016-01-14 20:43:46 +00:00
LICENSE.LGPLv3 Expand license scope from "Qt GUI Toolkit" to "Qt Toolkit" 2016-06-15 07:02:32 +00:00
LICENSE.LGPLv21 Expand license scope from "Qt GUI Toolkit" to "Qt Toolkit" 2016-06-15 07:02:32 +00:00
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qtbase.pro nuke configure -host-option 2016-12-13 18:55:59 +00:00
sync.profile Testlib: Rename qtest_global.h to qttestglobal.h 2018-03-21 10:31:01 +00:00