X-Git-Url: https://git.datadissipation.net/herbe/blobdiff_plain/e81696c2d38ddc11927d70680358512ece552880..cf5c30e7ccb3fb2cf67be36061d34f361a654519:/herbe.c diff --git a/herbe.c b/herbe.c index 9074012..270b9e9 100644 --- a/herbe.c +++ b/herbe.c @@ -4,40 +4,100 @@ #include #include #include +#include +#include +#include +#include #include "config.h" +#define EXIT_ACTION 3 + Display *display; Window window; +int exit_code = EXIT_SUCCESS; + +static void die(const char *format, ...) +{ + va_list ap; + va_start(ap, format); + vfprintf(stderr, format, ap); + fprintf(stderr, "\n"); + va_end(ap); + exit(EXIT_FAILURE); +} + +int get_max_len(char *body, XftFont *font, int max_text_width) +{ + int eol = strlen(body); + XGlyphInfo info; + XftTextExtentsUtf8(display, font, (FcChar8 *)body, eol, &info); + + if (info.width > max_text_width) + { + eol = max_text_width / font->max_advance_width; + info.width = 0; + + while (info.width < max_text_width) + { + eol++; + XftTextExtentsUtf8(display, font, (FcChar8 *)body, eol, &info); + } + + eol--; + } + + for (int i = 0; i < eol; i++) + if (body[i] == '\n') + { + body[i] = ' '; + return ++i; + } + + if (info.width < max_text_width) + return eol; + + int temp = eol; + + while (body[eol] != ' ' && eol) + --eol; + + if (eol == 0) + return temp; + else + return ++eol; +} void expire() { XEvent event; event.type = ButtonPress; + event.xbutton.button = DISMISS_BUTTON; XSendEvent(display, window, 0, 0, &event); XFlush(display); } -int main(int argc, char *argv[]) +void action() { - if (argc != 2) - { - fprintf(stderr, "Usage: herbe message\n"); - exit(EXIT_FAILURE); - } + exit_code = EXIT_ACTION; + expire(); +} - char *body = argv[1]; +int main(int argc, char *argv[]) +{ + if (argc == 1) + die("Usage: %s body", argv[0]); signal(SIGALRM, expire); - alarm(duration); + signal(SIGTERM, expire); + signal(SIGINT, expire); + signal(SIGUSR1, SIG_IGN); + signal(SIGUSR2, SIG_IGN); - display = XOpenDisplay(NULL); + display = XOpenDisplay(0); - if (display == NULL) - { - fprintf(stderr, "Cannot open display\n"); - exit(EXIT_FAILURE); - } + if (display == 0) + die("Cannot open display"); int screen = DefaultScreen(display); Visual *visual = DefaultVisual(display, screen); @@ -57,62 +117,37 @@ int main(int argc, char *argv[]) XftFont *font = XftFontOpenName(display, screen, font_pattern); + int num_of_lines = 0; int max_text_width = width - 2 * padding; - int eols_size = 5; - int *eols = malloc(eols_size * sizeof(int)); - eols[0] = 0; - int remainder = strlen(body); - int num_of_lines = 1; + int words_size = 5; + char **words = malloc(words_size * sizeof(char *)); + if (!words) + die("malloc failed"); - while (1) + for (int i = 1; i < argc; i++) { - XGlyphInfo info; - info.width = 0; - int eol = max_text_width / font->max_advance_width; - while (info.width < max_text_width) - { - eol++; - XftTextExtentsUtf8(display, font, (FcChar8 *)body + eols[num_of_lines - 1], eol, &info); - } - - --eol; + char *body = argv[i]; - if (eol >= remainder) + for (unsigned int eol = get_max_len(body, font, max_text_width); eol <= strlen(body) && eol; body += eol, num_of_lines++, eol = get_max_len(body, font, max_text_width)) { - if (eols_size < num_of_lines + 1) + if (words_size <= num_of_lines) { - eols_size += 5; - eols = realloc(eols, eols_size * sizeof(int)); + words = realloc(words, (words_size += 5) * sizeof(char *)); + if (!words) + die("malloc failed"); } - eols[num_of_lines] = eols[num_of_lines - 1] + remainder; - num_of_lines++; - break; + words[num_of_lines] = malloc((eol + 1) * sizeof(char)); + if (!words[num_of_lines]) + die("malloc failed"); + strncpy(words[num_of_lines], body, eol); + words[num_of_lines][eol] = '\0'; } - - int temp = eol; - - while (body[eols[num_of_lines - 1] + eol] != ' ' && eol) - --eol; - - if (eol == 0) - eol = temp; - else - eol++; - - remainder -= eol; - if (eols_size < num_of_lines + 1) - { - eols_size += 5; - eols = realloc(eols, eols_size * sizeof(int)); - } - eols[num_of_lines] = eols[num_of_lines - 1] + eol; - num_of_lines++; } unsigned int x = pos_x; unsigned int y = pos_y; unsigned int text_height = font->ascent - font->descent; - unsigned int height = (num_of_lines - 2) * line_spacing + (num_of_lines - 1) * text_height + 2 * padding; + unsigned int height = (num_of_lines - 1) * line_spacing + num_of_lines * text_height + 2 * padding; if (corner == TOP_RIGHT || corner == BOTTOM_RIGHT) x = screen_width - width - border_size * 2 - pos_x; @@ -130,27 +165,49 @@ int main(int argc, char *argv[]) XMapWindow(display, window); - XEvent event; + sem_t *mutex = sem_open("/herbe", O_CREAT, 0644, 1); + sem_wait(mutex); + + signal(SIGUSR1, expire); + signal(SIGUSR2, action); + + if (duration != 0) + alarm(duration); while (1) { + XEvent event; XNextEvent(display, &event); if (event.type == Expose) { XClearWindow(display, window); - for (int i = 1; i < num_of_lines; i++) - XftDrawStringUtf8(draw, &color, font, padding, line_spacing * (i - 1) + text_height * i + padding, (FcChar8 *)body + eols[i - 1], eols[i] - eols[i - 1]); + for (int i = 0; i < num_of_lines; i++) + XftDrawStringUtf8(draw, &color, font, padding, line_spacing * i + text_height * (i + 1) + padding, (FcChar8 *)words[i], strlen(words[i])); } if (event.type == ButtonPress) - break; + { + if (event.xbutton.button == DISMISS_BUTTON) + break; + else if (event.xbutton.button == ACTION_BUTTON) + { + exit_code = EXIT_ACTION; + break; + } + } } - free(eols); + sem_post(mutex); + sem_close(mutex); + + for (int i = 0; i < num_of_lines; i++) + free(words[i]); + + free(words); XftDrawDestroy(draw); XftColorFree(display, visual, colormap, &color); XftFontClose(display, font); - XCloseDisplay(display); - return EXIT_SUCCESS; + + exit(exit_code); }