From d1f0177d8d525eac0e0795d67467b09b57dbe7b0 Mon Sep 17 00:00:00 2001 From: Bradley Taunt Date: Thu, 18 Jan 2024 12:53:45 -0500 Subject: Initial commit on cgit platform --- components/keyboard_indicators.c | 50 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100755 components/keyboard_indicators.c (limited to 'components/keyboard_indicators.c') diff --git a/components/keyboard_indicators.c b/components/keyboard_indicators.c new file mode 100755 index 0000000..5f62bb7 --- /dev/null +++ b/components/keyboard_indicators.c @@ -0,0 +1,50 @@ +/* See LICENSE file for copyright and license details. */ +#include +#include +#include +#include + +#include "../slstatus.h" +#include "../util.h" + +/* + * fmt consists of uppercase or lowercase 'c' for caps lock and/or 'n' for num + * lock, each optionally followed by '?', in the order of indicators desired. + * If followed by '?', the letter with case preserved is included in the output + * if the corresponding indicator is on. Otherwise, the letter is always + * included, lowercase when off and uppercase when on. + */ +const char * +keyboard_indicators(const char *fmt) +{ + Display *dpy; + XKeyboardState state; + size_t fmtlen, i, n; + int togglecase, isset; + char key; + + if (!(dpy = XOpenDisplay(NULL))) { + warn("XOpenDisplay: Failed to open display"); + return NULL; + } + XGetKeyboardControl(dpy, &state); + XCloseDisplay(dpy); + + fmtlen = strnlen(fmt, 4); + for (i = n = 0; i < fmtlen; i++) { + key = tolower(fmt[i]); + if (key != 'c' && key != 'n') + continue; + + togglecase = (i + 1 >= fmtlen || fmt[i + 1] != '?'); + isset = (state.led_mask & (1 << (key == 'n'))); + + if (togglecase) + buf[n++] = isset ? toupper(key) : key; + else if (isset) + buf[n++] = fmt[i]; + } + + buf[n] = 0; + return buf; +} -- cgit v1.2.3-54-g00ecf