AuroraMiddleware/qt5base-lts
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xcb: fix cursorTheme update issue

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Clear the cache when cursor theme changed.

Idealy we should subscribe root window's RESOURCE_MANAGER property
to update cursor theme via Xcursor. KDE already has a daemon
KDE GTK Configurator to sync KDE settings to GTK. Then we can
register the fallback there both for KDE and GTK changes. See also
https://invent.kde.org/plasma/kde-gtk-config

Fixes: QTBUG-94538
Pick-to: 6.2 6.1 6.0 5.15
Change-Id: Ia4de30930a0dc1dc306c61e1553970c3dab67bd6
Reviewed-by: Liang Qi <liang.qi@qt.io>
This commit is contained in:
Tang Haixiang 2021-06-16 10:01:53 +08:00 committed by Liang Qi
parent fa664e0b2a
commit 7311cdc0d2
1 changed files with 6 additions and 2 deletions
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8
src/plugins/platforms/xcb/qxcbcursor.cpp
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@ -534,6 +534,8 @@ bool updateCursorTheme(void *dpy, const QByteArray &theme) {
Q_UNUSED(screen);
Q_UNUSED(name);
QXcbCursor *self = static_cast<QXcbCursor *>(handle);
self->m_cursorHash.clear();
updateCursorTheme(self->connection()->xlib_display(),property.toByteArray());
}
@ -559,14 +561,16 @@ xcb_cursor_t QXcbCursor::createFontCursor(int cshape)
int cursorId = cursorIdForShape(cshape);
xcb_cursor_t cursor = XCB_NONE;
// Try Xcursor first
#if QT_CONFIG(xcb_xlib) && QT_CONFIG(library)
if (m_screen->xSettings()->initialized())
m_screen->xSettings()->registerCallbackForProperty("Gtk/CursorThemeName",cursorThemePropertyChanged,this);
// Try Xcursor first
if (cshape >= 0 && cshape <= Qt::LastCursor) {
void *dpy = connection()->xlib_display();
cursor = loadCursor(dpy, cshape);
if (!cursor && !m_gtkCursorThemeInitialized && m_screen->xSettings()->initialized()) {
QByteArray gtkCursorTheme = m_screen->xSettings()->setting("Gtk/CursorThemeName").toByteArray();
m_screen->xSettings()->registerCallbackForProperty("Gtk/CursorThemeName",cursorThemePropertyChanged,this);
if (updateCursorTheme(dpy,gtkCursorTheme)) {
cursor = loadCursor(dpy, cshape);
}