mirror of
https://github.com/libretro/RetroArch.git
synced 2024-10-08 07:03:30 +00:00
133 lines
3.5 KiB
C
133 lines
3.5 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
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* Copyright (C) 2011-2015 - Daniel De Matteis
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <X11/extensions/xf86vmode.h>
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#ifdef HAVE_XINERAMA
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#include <X11/extensions/Xinerama.h>
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#endif
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#include <boolean.h>
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#include "../driver.h"
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#include "keyboard_line.h"
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#include "input_keymaps.h"
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static inline unsigned leading_ones(uint8_t c)
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{
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unsigned ones = 0;
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while (c & 0x80)
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{
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ones++;
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c <<= 1;
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}
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return ones;
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}
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/* Simple implementation. Assumes the sequence is
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* properly synchronized and terminated. */
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static size_t conv_utf8_utf32(uint32_t *out,
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size_t out_chars, const char *in, size_t in_size)
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{
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unsigned i;
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size_t ret = 0;
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while (in_size && out_chars)
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{
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unsigned ones, extra, shift;
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uint32_t c;
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uint8_t first = *in++;
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ones = leading_ones(first);
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if (ones > 6 || ones == 1) /* Invalid or desync. */
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break;
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extra = ones ? ones - 1 : ones;
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if (1 + extra > in_size) /* Overflow. */
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break;
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shift = (extra - 1) * 6;
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c = (first & ((1 << (7 - ones)) - 1)) << (6 * extra);
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for (i = 0; i < extra; i++, in++, shift -= 6)
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c |= (*in & 0x3f) << shift;
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*out++ = c;
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in_size -= 1 + extra;
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out_chars--;
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ret++;
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}
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return ret;
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}
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void x11_handle_key_event(XEvent *event, XIC ic, bool filter)
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{
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int i;
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unsigned state;
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uint16_t mod = 0;
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char keybuf[32] = {0};
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uint32_t chars[32] = {0};
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bool down = event->type == KeyPress;
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unsigned key = input_keymaps_translate_keysym_to_rk(XLookupKeysym(&event->xkey, 0));
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int num = 0;
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if (down && !filter)
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{
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KeySym keysym = 0;
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#ifdef X_HAVE_UTF8_STRING
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Status status = 0;
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/* XwcLookupString doesn't seem to work. */
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num = Xutf8LookupString(ic, &event->xkey, keybuf, ARRAY_SIZE(keybuf), &keysym, &status);
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/* libc functions need UTF-8 locale to work properly,
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* which makes mbrtowc a bit impractical.
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*
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* Use custom UTF8 -> UTF-32 conversion. */
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num = conv_utf8_utf32(chars, ARRAY_SIZE(chars), keybuf, num);
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#else
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(void)ic;
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num = XLookupString(&event->xkey, keybuf, sizeof(keybuf), &keysym, NULL); /* ASCII only. */
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for (i = 0; i < num; i++)
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chars[i] = keybuf[i] & 0x7f;
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#endif
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}
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state = event->xkey.state;
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if (state & ShiftMask)
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mod |= RETROKMOD_SHIFT;
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if (state & LockMask)
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mod |= RETROKMOD_CAPSLOCK;
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if (state & ControlMask)
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mod |= RETROKMOD_CTRL;
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if (state & Mod1Mask)
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mod |= RETROKMOD_ALT;
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if (state & Mod4Mask)
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mod |= RETROKMOD_META;
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input_keyboard_event(down, key, chars[0], mod, RETRO_DEVICE_KEYBOARD);
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for (i = 1; i < num; i++)
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input_keyboard_event(down, RETROK_UNKNOWN,
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chars[i], mod, RETRO_DEVICE_KEYBOARD);
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}
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