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X11: Query and keep track of Xkb group index

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For users with multiple keyboard layouts configured, glfwGetKeyName
works fine only with the primary layout.  Switching layouts results in
changing the group index.  This commit querries the current group index
when initializing keyboard input and keeps track of any change to it.

As a result the scancode -> keyname mapping may change while the program
is running (needs to be documented).

Fixes #1462.
Closes #1528.

(cherry picked from commit 36f90800d8)
This commit is contained in:
Denis Bernard
2019-05-30 00:37:26 +02:00
committed by Camilla Löwy
parent 84fa724456
commit b3eb6dd38b
3 changed files with 28 additions and 10 deletions
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src/x11_window.c
+10 -1
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@@ -1180,6 +1180,15 @@ static void processEvent(XEvent *event)
}
}
if (_glfw.x11.xkb.available && event->type == _glfw.x11.xkb.eventBase)
{
if (((XkbEvent *)event)->any.xkb_type == XkbStateNotify &&
((XkbEvent *)event)->state.changed & XkbGroupStateMask)
{
_glfw.x11.xkb.group = ((XkbEvent *)event)->state.group;
}
}
if (event->type == GenericEvent)
{
if (_glfw.x11.xi.available)
@@ -2780,7 +2789,7 @@ const char* _glfwPlatformGetScancodeName(int scancode)
if (!_glfw.x11.xkb.available)
return NULL;
const KeySym keysym = XkbKeycodeToKeysym(_glfw.x11.display, scancode, 0, 0);
const KeySym keysym = XkbKeycodeToKeysym(_glfw.x11.display, scancode, _glfw.x11.xkb.group, 0);
if (keysym == NoSymbol)
return NULL;