92 lines
4.1 KiB
Diff
92 lines
4.1 KiB
Diff
From 2c828bf5d4a0332ecece29e4513ae4b0a4a78d08 Mon Sep 17 00:00:00 2001
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From: q66 <daniel@octaforge.org>
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Date: Mon, 3 Apr 2023 14:36:51 +0200
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Subject: [PATCH] Fix scrolling on big endian platforms
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The mask is defined as an array of 4*CARD8, but libxcb and Qt treat
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it as array of CARD32, but that only works on little endian platforms.
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Qt 6 switched to the array of 4*CARD8 representation, but that change is rather
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complex for a backport but fortunately also not needed because 5.x only uses
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32 bits. Use a little-endian CARD32 to have the same effect as 4*CARD8.
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The initial diff is from https://github.com/void-linux/void-packages/pull/13901,
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which is assumed to be the original source.
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Fabian Vogt <fvogt@suse.de> added a patch header, description and also fixed
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QXcbConnection::xi2SetMouseGrabEnabled.
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Fixes: https://bugreports.qt.io/browse/QTBUG-105157
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---
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src/plugins/platforms/xcb/qxcbconnection_xi2.cpp | 12 ++++++++----
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1 file changed, 8 insertions(+), 4 deletions(-)
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diff --git a/src/plugins/platforms/xcb/qxcbconnection_xi2.cpp b/src/plugins/platforms/xcb/qxcbconnection_xi2.cpp
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index 27a2526df..cda10b39a 100644
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--- a/src/plugins/platforms/xcb/qxcbconnection_xi2.cpp
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+++ b/src/plugins/platforms/xcb/qxcbconnection_xi2.cpp
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@@ -43,6 +43,7 @@
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#include "qxcbwindow.h"
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#include "qtouchdevice.h"
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#include "QtCore/qmetaobject.h"
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+#include "QtCore/qendian.h"
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#include <qpa/qwindowsysteminterface_p.h>
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#include <QDebug>
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#include <cmath>
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@@ -66,6 +67,7 @@ void QXcbConnection::xi2SelectStateEvents()
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xiEventMask.mask = XCB_INPUT_XI_EVENT_MASK_HIERARCHY;
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xiEventMask.mask |= XCB_INPUT_XI_EVENT_MASK_DEVICE_CHANGED;
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xiEventMask.mask |= XCB_INPUT_XI_EVENT_MASK_PROPERTY;
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+ xiEventMask.mask = qToLittleEndian(xiEventMask.mask);
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xcb_input_xi_select_events(xcb_connection(), rootWindow(), 1, &xiEventMask.header);
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}
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@@ -90,7 +92,7 @@ void QXcbConnection::xi2SelectDeviceEvents(xcb_window_t window)
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qt_xcb_input_event_mask_t mask;
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mask.header.deviceid = XCB_INPUT_DEVICE_ALL_MASTER;
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mask.header.mask_len = 1;
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- mask.mask = bitMask;
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+ mask.mask = qToLittleEndian(bitMask);
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xcb_void_cookie_t cookie =
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xcb_input_xi_select_events_checked(xcb_connection(), window, 1, &mask.header);
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xcb_generic_error_t *error = xcb_request_check(xcb_connection(), cookie);
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@@ -363,7 +365,7 @@ void QXcbConnection::xi2SelectDeviceEventsCompatibility(xcb_window_t window)
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qt_xcb_input_event_mask_t xiMask;
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xiMask.header.deviceid = XCB_INPUT_DEVICE_ALL_MASTER;
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xiMask.header.mask_len = 1;
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- xiMask.mask = mask;
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+ xiMask.mask = qToLittleEndian(mask);
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xcb_void_cookie_t cookie =
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xcb_input_xi_select_events_checked(xcb_connection(), window, 1, &xiMask.header);
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@@ -390,7 +392,7 @@ void QXcbConnection::xi2SelectDeviceEventsCompatibility(xcb_window_t window)
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tabletDevices.insert(deviceId);
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xiEventMask[i].header.deviceid = deviceId;
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xiEventMask[i].header.mask_len = 1;
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- xiEventMask[i].mask = mask;
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+ xiEventMask[i].mask = qToLittleEndian(mask);
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}
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xcb_input_xi_select_events(xcb_connection(), window, nrTablets, &(xiEventMask.data()->header));
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}
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@@ -406,7 +408,7 @@ void QXcbConnection::xi2SelectDeviceEventsCompatibility(xcb_window_t window)
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#endif
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xiEventMask[i].header.deviceid = scrollingDevice.deviceId;
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xiEventMask[i].header.mask_len = 1;
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- xiEventMask[i].mask = mask;
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+ xiEventMask[i].mask = qToLittleEndian(mask);
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i++;
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}
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xcb_input_xi_select_events(xcb_connection(), window, i, &(xiEventMask.data()->header));
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@@ -826,6 +828,8 @@ bool QXcbConnection::xi2SetMouseGrabEnabled(xcb_window_t w, bool grab)
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| XCB_INPUT_XI_EVENT_MASK_TOUCH_UPDATE
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| XCB_INPUT_XI_EVENT_MASK_TOUCH_END;
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+ mask = qToLittleEndian(mask);
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+
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for (int id : qAsConst(m_xiMasterPointerIds)) {
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xcb_generic_error_t *error = nullptr;
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auto cookie = xcb_input_xi_grab_device(xcb_connection(), w, XCB_CURRENT_TIME, XCB_CURSOR_NONE, id,
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--
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2.40.1
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