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- /*
- * Copyright © 2008 Ian Osgood <iano@quirkster.com>
- * Copyright © 2008 Jamey Sharp <jamey@minilop.net>
- * Copyright © 2008 Josh Triplett <josh@freedesktop.org>
- * Copyright © 2008 Ulrich Eckhardt <doomster@knuut.de>
- *
- * 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 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 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.
- *
- * Except as contained in this notice, the names of the authors or
- * their institutions shall not be used in advertising or otherwise to
- * promote the sale, use or other dealings in this Software without
- * prior written authorization from the authors.
- */
- // Ported from xcb_key_symbols_get_keysym
- // https://gitlab.freedesktop.org/xorg/lib/libxcb-keysyms/-/blob/691515491a4a3c119adc6c769c29de264b3f3806/keysyms/keysyms.c#L189
- uint32_t KeycodeColumnToKeysym(KeyCode keycode,
- int column,
- const GetKeyboardMappingReply& keyboard_mapping,
- uint8_t min_keycode,
- uint8_t max_keycode) {
- uint8_t key = static_cast<uint8_t>(keycode);
- uint8_t n_keysyms = keyboard_mapping.keysyms_per_keycode;
- if (column < 0 || (column >= n_keysyms && column > 3) || key < min_keycode ||
- key > max_keycode) {
- return 0;
- }
- const auto* syms = &keyboard_mapping.keysyms[(key - min_keycode) * n_keysyms];
- if (column < 4) {
- if (column > 1) {
- while ((n_keysyms > 2) && (syms[n_keysyms - 1] == kNoSymbol))
- n_keysyms--;
- if (n_keysyms < 3)
- column -= 2;
- }
- if ((n_keysyms <= (column | 1)) || (syms[column | 1] == kNoSymbol)) {
- KeySym lsym, usym;
- ConvertCase(syms[column & ~1], &lsym, &usym);
- if (!(column & 1))
- return static_cast<uint32_t>(lsym);
- if (usym == lsym)
- return 0;
- return static_cast<uint32_t>(usym);
- }
- }
- return static_cast<uint32_t>(syms[column]);
- }
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