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https://gitlab.os-k.eu/os-k-team/kvisc.git
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85 lines
1.6 KiB
C
85 lines
1.6 KiB
C
// The OS/K Team licenses this file to you under the MIT license.
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// See the LICENSE file in the project root for more information.
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#include <pc/console.h>
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#define KEYBUFSIZE 8192
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typedef uint keycode_t;
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keycode_t keybuf[KEYBUFSIZE] = { 0 };
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keycode_t *keybuf_last = &keybuf[0];
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keycode_t *keybuf_ptr = &keybuf[0];
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void console_addkey(ctx_t *ctx, keycode_t key)
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{
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*keybuf_ptr++ = key;
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if (keybuf_ptr == keybuf + KEYBUFSIZE)
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keybuf_ptr = &keybuf[0];
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}
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keycode_t console_getkey(ctx_t *ctx)
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{
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keycode_t rc = *keybuf_last++;
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if (keybuf_last == keybuf + KEYBUFSIZE)
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keybuf_last = &keybuf[0];
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return rc;
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}
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keycode_t console_scankeybuf(ctx_t *ctx)
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{
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if (keybuf_last != keybuf_ptr)
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return console_getkey(ctx);
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return 0;
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}
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void console_handle_input(ctx_t *ctx, SDL_Keycode key)
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{
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keycode_t code = 0;
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SDL_Keymod mod = SDL_GetModState();
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if (key <= 'z' && key >= 'a')
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{
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if (mod & (KMOD_CTRL|KMOD_ALT))
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{
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if (key == 'c')
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_except(ctx, E_BRK, "Ctrl+C received");
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return;
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}
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if (mod & KMOD_SHIFT)
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key -= ('a' - 'A');
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console_addkey(ctx, key);
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return;
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}
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if (key <= '0' && key >= '9')
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console_addkey(ctx, key);
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switch (key)
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{
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case SDLK_SPACE: code = ' '; break;
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case SDLK_BACKSLASH: code = '\\'; break;
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case SDLK_BACKSPACE: code = '\b'; break;
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case SDLK_RETURN:
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case SDLK_RETURN2:
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code = '\n';
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break;
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default:
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return;
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}
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console_addkey(ctx, code);
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}
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