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From d4e937a6280f34bc1cce8c8cea3806a741312fbc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?B=C5=82a=C5=BCej=20Szczygie=C5=82?= <spaz16@wp.pl>
Date: Tue, 25 Sep 2018 18:45:10 +0200
Subject: xcb: Don't get initial screen rotation
"xcb_randr_get_screen_info" can be slow and in some configurations can
cause short mouse cursor freezes (which will happen on Qt application
startup).
Initial screen rotation was used only to not handle possible redundant
screen change event.
Fixes: QTBUG-70760
Change-Id: I9f01325a045d2c82c4dd2fce91a18a34e54a4bcd
Reviewed-by: Gatis Paeglis <gatis.paeglis@qt.io>
---
src/plugins/platforms/xcb/qxcbscreen.cpp | 7 -------
src/plugins/platforms/xcb/qxcbscreen.h | 2 +-
2 files changed, 1 insertion(+), 8 deletions(-)
diff --git a/src/plugins/platforms/xcb/qxcbscreen.cpp b/src/plugins/platforms/xcb/qxcbscreen.cpp
index 7f2793b2b7..a696e2a311 100644
--- a/src/plugins/platforms/xcb/qxcbscreen.cpp
+++ b/src/plugins/platforms/xcb/qxcbscreen.cpp
@@ -118,13 +118,6 @@ QXcbVirtualDesktop::QXcbVirtualDesktop(QXcbConnection *connection, xcb_screen_t
xcb_depth_next(&depth_iterator);
}
-
- if (connection->hasXRandr()) {
- xcb_connection_t *conn = connection->xcb_connection();
- auto screen_info = Q_XCB_REPLY(xcb_randr_get_screen_info, conn, screen->root);
- if (screen_info)
- m_rotation = screen_info->rotation;
- }
}
QXcbVirtualDesktop::~QXcbVirtualDesktop()
diff --git a/src/plugins/platforms/xcb/qxcbscreen.h b/src/plugins/platforms/xcb/qxcbscreen.h
index 6438669e7a..792aca4b06 100644
--- a/src/plugins/platforms/xcb/qxcbscreen.h
+++ b/src/plugins/platforms/xcb/qxcbscreen.h
@@ -220,7 +220,7 @@ private:
xcb_randr_crtc_t m_crtc;
xcb_randr_mode_t m_mode = XCB_NONE;
bool m_primary = false;
- uint8_t m_rotation = XCB_RANDR_ROTATION_ROTATE_0;
+ uint8_t m_rotation = 0;
QString m_outputName;
QSizeF m_outputSizeMillimeters;
--
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