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32
Makefile
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32
Makefile
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##
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# batt-signal
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#
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# @file
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# @version 0.1
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PREFIX = /usr/local
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SHAREPREFIX = $(PREFIX)/share/batt-signal
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all: batt-signal
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CFLAGS = -O2
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CPPFLAGS = -DSHAREPREFIX=\"$(SHAREPREFIX)\"
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LIBS = -L/usr/X11R6/lib -lX11 -lXxf86vm -lXft
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INCS = -I/usr/include/freetype2
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batt-signal: main.c
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gcc main.c -o batt-signal $(LIBS) $(INCS) $(CFLAGS) $(CPPFLAGS)
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clean:
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rm -f batt-signal
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install: all
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mkdir -p $(DESTDIR)$(PREFIX)/bin
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cp -f batt-signal $(DESTDIR)$(PREFIX)/bin
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mkdir -p $(DESTDIR)$(SHAREPREFIX)
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cp -f lobat.mp3 $(DESTDIR)$(SHAREPREFIX)
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.PHONY: all install clean
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# end
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BIN
lobat.mp3
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BIN
lobat.mp3
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Binary file not shown.
252
main.c
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252
main.c
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/*
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██████╗░░█████╗░████████╗████████╗░░░░░░░██████╗██╗░██████╗░███╗░░██╗░█████╗░██╗░░░░░
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██╔══██╗██╔══██╗╚══██╔══╝╚══██╔══╝░░░░░░██╔════╝██║██╔════╝░████╗░██║██╔══██╗██║░░░░░
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██████╦╝███████║░░░██║░░░░░░██║░░░█████╗╚█████╗░██║██║░░██╗░██╔██╗██║███████║██║░░░░░
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██╔══██╗██╔══██║░░░██║░░░░░░██║░░░╚════╝░╚═══██╗██║██║░░╚██╗██║╚████║██╔══██║██║░░░░░
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██████╦╝██║░░██║░░░██║░░░░░░██║░░░░░░░░░██████╔╝██║╚██████╔╝██║░╚███║██║░░██║███████╗
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╚═════╝░╚═╝░░╚═╝░░░╚═╝░░░░░░╚═╝░░░░░░░░░╚═════╝░╚═╝░╚═════╝░╚═╝░░╚══╝╚═╝░░╚═╝╚══════╝
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*/
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#include <X11/Xatom.h>
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#include <X11/Xft/Xft.h>
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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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#include <X11/keysym.h>
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#include <ctype.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <time.h>
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#define FONT_SIZE 24
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typedef struct {
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unsigned long flags;
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unsigned long functions;
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unsigned long decorations;
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long inputMode;
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unsigned long status;
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} Hints;
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int width, height;
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char *message = "Battery is low!!";
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void catch_fire(char *, int);
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void draw_ui(Display *, Window, Visual *, Colormap, int);
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void window_attr(Display *, Window, int);
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void alert();
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enum state {
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Alert,
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Normal
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};
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int main(void) {
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time_t lastalert = 0; // a long time ago
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enum state laststate = Normal, curstate = Normal;
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while (1) {
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FILE *battery = fopen("/sys/class/power_supply/BAT0/capacity","r");
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FILE *status = fopen("/sys/class/power_supply/BAT0/status","r");
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if(battery == NULL || status == NULL) {
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catch_fire("batt-signal : Cannot find battery.\n", 100);
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}
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int cap;
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char bat_status[20] = "";
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fscanf(battery,"%d", &cap);
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fscanf(status, "%s", bat_status);
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curstate = cap <= 105 && strcmp(bat_status, "Discharging") == 0 ? Alert : Normal;
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if (curstate == Alert && (time(NULL) - lastalert >= 180 || laststate == Normal)) {
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alert();
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lastalert = time(NULL);
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}
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laststate = curstate;
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printf("%s : %d\n", bat_status, cap);
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fclose(battery);
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fclose(status);
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sleep(1);
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}
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return 0;
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}
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void catch_fire(char *string, int error) {
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fprintf(stderr, string);
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exit(error);
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}
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void draw_ui(Display *d, Window w, Visual *visual, Colormap cmap, int s) {
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// FONT SHENANIGANS
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char font_name[strlen("monospace-") + 2];
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sprintf(font_name, "monospace-%d", FONT_SIZE);
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XftFont *font = XftFontOpenName(d, s, font_name);
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printf("lol1\n");
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// FONT COLORS
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XftColor xft_black, xft_white;
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XftColorAllocName(d, visual, cmap, "black", &xft_black);
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XftColorAllocName(d, visual, cmap, "white", &xft_white);
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XftDraw *xftdraw = XftDrawCreate(d, w, visual, cmap);
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// MAKE WHITE RECT
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int white_rect_x = width / 24;
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int white_rect_y = height / 12;
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int white_rect_width = width / 18;
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int white_rect_height = height / 6;
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XftDrawRect(xftdraw, &xft_white, white_rect_x, white_rect_y, white_rect_width, white_rect_height);
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// MAKE BLACK RECT
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int black_rect_x = width / 24 + width / 140;
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int black_rect_y = height / 12 + height / 100;
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int black_rect_width = width / 24;
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int black_rect_height = height / 8;
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XftDrawRect(xftdraw, &xft_black, black_rect_x, black_rect_y, black_rect_width, black_rect_height);
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// MAKE WHITE BAR
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int bar_rect_x = width / 24 + width / 36 - width / 120;
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int bar_rect_y = height / 12 - height / 100;
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int bar_rect_width = width / 60;
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int bar_rect_height = height / 60;
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XftDrawRect(xftdraw, &xft_white, bar_rect_x, bar_rect_y, bar_rect_width, bar_rect_height);
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// PRINT PASS MESSAGE
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XftDrawString8(xftdraw, &xft_white, font, white_rect_x *3, height/6, message, strlen(message));
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}
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void alert()
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{
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Display *d = XOpenDisplay(NULL);
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if (d == NULL)
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catch_fire("Cannot open display\n", 1);
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int s = DefaultScreen(d);
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int depth = DefaultDepth(d, s);
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width = DisplayWidth(d, s);
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height = DisplayHeight(d, s);
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Window w;
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Visual *visual = DefaultVisual(d, s);
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Colormap cmap = DefaultColormap(d, s);
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// IGNORES WM RULES
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XSetWindowAttributes attributes;
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attributes.override_redirect = True;
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attributes.background_pixel = BlackPixel(d, s);
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// MAKE THE WINDOW
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w = XCreateWindow(d, XRootWindow(d, s), 0, 0, width, height, 0, depth, InputOutput, visual, CWBackPixel | CWOverrideRedirect, &attributes);
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// SET WINDOW ATTRIBUTES
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window_attr(d, w, s);
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// DRAW THE RECTANGLES AND STRINGS
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draw_ui(d, w, visual, cmap, s);
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//PLAY THE SOUND
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pid_t child_id;
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child_id = fork();
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if (child_id == -1) {
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catch_fire("Couldn't fork\n", 1);
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} else if (child_id == 0) {
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execl("/usr/bin/mpg123", "mpg123", SHAREPREFIX "/lobat.mp3", NULL);
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}
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while (1) {
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int foo;
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KeySym ksym;
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XEvent e;
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XNextEvent(d, &e);
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// CHECK IF ANYTHING IS PRESSED
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if(e.type == KeyPress)
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break;
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draw_ui(d, w, visual, cmap, s);
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}
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XCloseDisplay(d);
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}
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void window_attr(Display *d, Window w, int s) {
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int mode_count;
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// VIDEO MODES
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XF86VidModeModeInfo **modes, *video_mode;
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XF86VidModeGetAllModeLines(d, s, &mode_count, &modes);
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video_mode = modes[0];
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// DISABLE DECORATIONS
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Hints hints;
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hints.flags = 2;
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hints.decorations = 0;
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Atom roperty = XInternAtom(d, "_MOTIF_WM_HINTS", True);
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XSelectInput(d, w, ExposureMask | KeyPressMask);
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XMapWindow(d, w);
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// SETTING FULLSCREEN
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XF86VidModeSwitchToMode(d, s, video_mode);
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XF86VidModeSetViewPort(d, s, 0, 0);
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XMoveResizeWindow(d, w, width/3, height/3, width/3, height/3);
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XMapRaised(d, w);
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XGrabPointer(d, w, True, 0, GrabModeAsync, GrabModeAsync, w, 0L, CurrentTime);
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XGrabKeyboard(d, w, True, GrabModeAsync, GrabModeAsync, CurrentTime);
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}
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