Edit
kc3-lang/libxkbcommon/src/map.c
Daniel Stone
- src/map.c
-
/** * Copyright © 2012 Intel Corporation * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. * * Author: Daniel Stone <daniel@fooishbar.org> */ /************************************************************ * Copyright (c) 1993 by Silicon Graphics Computer Systems, Inc. * * Permission to use, copy, modify, and distribute this * software and its documentation for any purpose and without * fee is hereby granted, provided that the above copyright * notice appear in all copies and that both that copyright * notice and this permission notice appear in supporting * documentation, and that the name of Silicon Graphics not be * used in advertising or publicity pertaining to distribution * of the software without specific prior written permission. * Silicon Graphics makes no representation about the suitability * of this software for any purpose. It is provided "as is" * without any express or implied warranty. * * SILICON GRAPHICS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY * AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON * GRAPHICS BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH * THE USE OR PERFORMANCE OF THIS SOFTWARE. * * ********************************************************/ #ifdef HAVE_CONFIG_H #include <config.h> #endif #include "xkbcommon/xkbcommon.h" #include "XKBcommonint.h" #include "xkballoc.h" #include <X11/X.h> /** * Returns the level to use for the given key and state, or -1 if invalid. */ static int xkb_key_get_level(struct xkb_desc *xkb, struct xkb_state *state, xkb_keycode_t key, unsigned int group) { struct xkb_key_type *type = XkbKeyType(xkb, key, group); unsigned int active_mods = state->mods & type->mods.mask; int i; fprintf(stderr, "get_level: %s, %d entries, mods %x, mask %x (v%x r%x)\n", type->name, type->map_count, state->mods, type->mods.mask, type->mods.vmods, type->mods.real_mods); for (i = 0; i < type->map_count; i++) { if (!type->map[i].active) continue; fprintf(stderr, " type active, level %d (%s), mask %x (v%x r%x), active %x\n", type->map[i].level, type->level_names[i], type->map[i].mods.mask, type->map[i].mods.real_mods, type->map[i].mods.vmods, active_mods); if (type->map[i].mods.mask == active_mods) return type->map[i].level; } return 0; } /** * Returns the group to use for the given key and state, or -1 if invalid, * taking wrapping/clamping/etc into account. */ static int xkb_key_get_group(struct xkb_desc *xkb, struct xkb_state *state, xkb_keycode_t key) { unsigned int info = XkbKeyGroupInfo(xkb, key); unsigned int num_groups = XkbKeyNumGroups(xkb, key); int ret = state->group; if (ret < XkbKeyNumGroups(xkb, key)) return ret; switch (XkbOutOfRangeGroupAction(info)) { case XkbRedirectIntoRange: ret = XkbOutOfRangeGroupInfo(info); if (ret >= num_groups) ret = 0; break; case XkbClampIntoRange: ret = num_groups - 1; break; case XkbWrapIntoRange: default: ret %= num_groups; break; } return ret; } /** * As below, but takes an explicit group/level rather than state. */ unsigned int xkb_key_get_syms_by_level(struct xkb_desc *xkb, xkb_keycode_t key, unsigned int group, unsigned int level, xkb_keysym_t **syms_out) { *syms_out = &(XkbKeySymEntry(xkb, key, level, group)); if (**syms_out == NoSymbol) goto err; return 1; err: *syms_out = NULL; return 0; } /** * Provides the symbols to use for the given key and state. Returns the * number of symbols pointed to in syms_out. */ unsigned int xkb_key_get_syms(struct xkb_desc *xkb, struct xkb_state *state, xkb_keycode_t key, xkb_keysym_t **syms_out) { int group; int level; if (!xkb || !state || key < xkb->min_key_code || key > xkb->max_key_code) return -1; group = xkb_key_get_group(xkb, state, key); if (group == -1) goto err; level = xkb_key_get_level(xkb, state, key, group); if (level == -1) goto err; return xkb_key_get_syms_by_level(xkb, key, group, level, syms_out); err: *syms_out = NULL; return 0; }