Attachment 39093 Details for Bug 30527 – test case illustrating broken xkb keygrabs

test case illustrating broken xkb keygrabs

test-xkb-keygrab.c (text/plain), 5.17 KB, created by Alex Chiang on 2010-09-30 20:06:12 UTC

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Creator: Alex Chiang

Created: 2010-09-30 20:06:12 UTC

Size: 5.17 KB

patch

obsolete

>/* -*- mode: C; c-basic-offset: 4; indent-tabs-mode: nil; -*- */
>
>/* In older X, you can run this and press the "Home" key and see key
> * events received.  In newer X, it gets an X error.
> */
>
>#include <X11/Xlib.h>
>#include <X11/Xatom.h>
>#include <X11/XKBlib.h>
>#include <X11/keysym.h>
>#include <X11/XF86keysym.h>
>
>#include <stdio.h>
>#include <stdlib.h>
>#include <string.h>
>
>static int xkb_opcode;
>static int xkb_event_base;
>static int xkb_error_base;
>
>static void
>bind_key_xkb(Display     *xdisplay,
>             XkbDescPtr   xkb,
>             KeySym       keysym,
>             KeyCode      keycode)
>{
>    XkbMapChangesRec changes;
>    XkbMessageAction xma;
>    int types[1];
>
>    memset(&changes, 0, sizeof(changes));
>
>    printf("Grabbing keysym 0x%lx keycode 0x%x using xkb\n",
>           keysym, keycode);
>
>    /* keysyms */
>    if (XkbResizeKeySyms(xkb, keycode, 1) == NULL) {
>        fprintf(stderr, "XkbResizeKeySyms() failed\n");
>        return;
>    }
>
>    XkbKeySymEntry(xkb, keycode, 0, 0) = keysym;
>
>    changes.changed |= XkbKeySymsMask;
>    changes.first_key_sym = keycode;
>    changes.num_key_syms = 1;
>
>    /* actions */
>    memset(&xma, 0, sizeof(xma));
>    xma.type = XkbSA_ActionMessage;
>    xma.flags = XkbSA_MessageOnPress | XkbSA_MessageOnRelease;
>    strcpy((char*)xma.message, "!");
>
>    if (XkbResizeKeyActions(xkb, keycode, 1) == NULL) {
>        fprintf(stderr, "XkbResizeKeyActions failed\n");
>        return;
>    }
>
>    XkbKeyActionEntry(xkb, keycode, 0, 0)->msg = xma;
>
>    changes.changed |= XkbKeyActionsMask;
>    changes.first_key_act = keycode;
>    changes.num_key_acts = 1;
>
>    /* groups */
>    types[0] = XkbOneLevelIndex;
>
>    if (XkbChangeTypesOfKey(xkb, keycode, 1, XkbGroup1Mask, types, NULL) != Success) {
>        fprintf(stderr, "XkbChangeTypesOfKey failed\n");
>        return;
>    }
>
>    changes.changed |= XkbKeyTypesMask;
>    changes.first_type = XkbKeyKeyTypeIndex(xkb, keycode, 0);
>    changes.num_types = 1;
>
>#define XKB_CHANGE_MAP_NONSENSE 1
>
>    printf("Sending map changes to server\n");
>    /* commit to server */
>    if (!XkbChangeMap(xdisplay, xkb, &changes)) {
>        fprintf(stderr, "XkbChangeMap failed\n");
>#if XKB_CHANGE_MAP_NONSENSE
>    } else {
>        /* XkbChangeMap apparently ignores XkbKeyActionsMask (server map) if
>         * used together with XkbKeyTypesMask|XkbKeySymsMask (client map)
>         */
>        changes.changed = XkbKeyActionsMask;
>
>        if (!XkbChangeMap(xdisplay, xkb, &changes)) {
>            fprintf(stderr, "XkbChangeMap(XkbKeyActionsMask) failed\n");
>        }
>#endif
>    }
>
>    printf("Bound key OK\n");
>}
>
>static void
>bind_keys(Display     *xdisplay,
>          XkbDescPtr   xkb)
>{
>    KeySym keysym;
>    KeyCode keycode;
>
>    keysym = XK_Home;
>    keycode = XKeysymToKeycode(xdisplay, keysym);
>
>    bind_key_xkb(xdisplay, xkb, keysym, keycode);
>}
>
>int
>main(int argc,
>     char **argv)
>{
>    Display *xdisplay;
>    XEvent xevent;
>    XkbDescPtr xkb;
>
>    xdisplay = XOpenDisplay(NULL);
>
>    XSynchronize(xdisplay, True);
>
>    XkbQueryExtension(xdisplay, &xkb_opcode, &xkb_event_base, &xkb_error_base,
>                      NULL, NULL);
>
>    xkb = XkbGetMap(xdisplay,
>                    XkbKeySymsMask | XkbKeyTypesMask | XkbKeyActionsMask | XkbModifierMapMask | XkbVirtualModsMask,
>                    XkbUseCoreKbd);
>
>    XkbSelectEvents(xdisplay, XkbUseCoreKbd,
>                    XkbMapNotifyMask | XkbActionMessageMask,
>                    XkbMapNotifyMask | XkbActionMessageMask);
>
>    bind_keys(xdisplay, xkb);
>
>    while (XNextEvent(xdisplay, &xevent) == Success) {
>        if (xevent.type == MappingNotify) {
>            printf("MappingNotify\n");
>        } else if (xevent.type == KeyPress) {
>            printf("Key press event window 0x%lx root 0x%lx keycode 0x%x\n",
>                   xevent.xkey.window,
>                   xevent.xkey.root,
>                   xevent.xkey.keycode);
>        } else if (xevent.type == (xkb_event_base + XkbEventCode)) {
>            XkbEvent *xkbevent = (XkbEvent*)&xevent;
>
>            printf("Xkb event received\n");
>
>            if (xkbevent->any.xkb_type == XkbMapNotify) {
>                XkbMapNotifyEvent *map = &xkbevent->map;
>
>                printf("XkbMapNotify\n");
>
>                XkbRefreshKeyboardMapping(map);
>
>                /* Need to redo our xkb keybindings as they may have been lost.
>                 * Disable XkbMapNotify events for our own changes to avoid infinite
>                 * busy loop. */
>                XkbSelectEvents(xdisplay, XkbUseCoreKbd,
>                                XkbMapNotifyMask, 0);
>
>                bind_keys(xdisplay, xkb);
>
>                XkbSelectEvents(xdisplay, XkbUseCoreKbd,
>                                XkbMapNotifyMask, XkbMapNotifyMask);
>            } else if (xkbevent->any.xkb_type == XkbActionMessage) {
>                printf("XkbActionMessage %s keycode=0x%x mods=0x%x\n",
>                       xkbevent->message.press ? "press" : "release",
>                       xkbevent->message.keycode,
>                       xkbevent->message.mods);
>            } else {
>                printf("Xkb event xkb_type=%u\n",
>                       xkbevent->any.xkb_type);
>            }
>        } else {
>            printf("event type %d\n", xevent.type);
>        }
>    }
>
>    return 0;
>}

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