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#define _GNU_SOURCE
#define _POSIX_C_SOURCE 200809L
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <dirent.h>
#include <ctype.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/keysym.h>
#include "glitch.h"
#include "config.h"
extern WindowManager wm;
static void launcher_filter(void);
static char *trim_whitespace(char *str) {
char *end;
while (isspace((unsigned char)*str)) str++;
if (*str == 0) return str;
end = str + strlen(str) - 1;
while (end > str && isspace((unsigned char)*end)) end--;
end[1] = '\0';
return str;
}
static void load_applications(void) {
const char *system_dirs[] = {
"/usr/share/applications",
"/usr/local/share/applications"
};
char home_dir[1024];
char *home = getenv("HOME");
if (home) {
snprintf(home_dir, sizeof(home_dir), "%s/.local/share/applications", home);
}
if (wm.launcher_items) {
for (int i = 0; i < wm.launcher_items_count; i++) {
free(wm.launcher_items[i].name);
free(wm.launcher_items[i].exec);
}
free(wm.launcher_items);
wm.launcher_items = NULL;
wm.launcher_items_count = 0;
}
int capacity = 100;
wm.launcher_items = malloc(sizeof(LauncherItem) * capacity);
for (int d = -1; d < (int)LENGTH(system_dirs); d++) {
const char *path_to_open;
if (d == -1) {
if (!home) continue;
path_to_open = home_dir;
} else {
path_to_open = system_dirs[d];
}
DIR *dir = opendir(path_to_open);
if (!dir) continue;
struct dirent *entry;
while ((entry = readdir(dir))) {
if (strstr(entry->d_name, ".desktop")) {
char desktop_path[2048];
snprintf(desktop_path, sizeof(desktop_path), "%s/%s", path_to_open, entry->d_name);
FILE *f = fopen(desktop_path, "r");
if (!f) continue;
char line[1024];
char *name = NULL;
char *exec = NULL;
int no_display = 0;
int in_desktop_entry = 0;
while (fgets(line, sizeof(line), f)) {
char *trimmed = trim_whitespace(line);
if (trimmed[0] == '[' && strstr(trimmed, "[Desktop Entry]")) {
in_desktop_entry = 1;
continue;
}
if (trimmed[0] == '[' && !strstr(trimmed, "[Desktop Entry]")) {
in_desktop_entry = 0;
}
if (!in_desktop_entry) continue;
if (strncmp(trimmed, "Name=", 5) == 0 && !name) {
name = strdup(trim_whitespace(trimmed + 5));
} else if (strncmp(trimmed, "Exec=", 5) == 0 && !exec) {
char *e = strdup(trimmed + 5);
char *percent = strchr(e, '%');
if (percent) *percent = '\0';
exec = strdup(trim_whitespace(e));
free(e);
} else if (strncmp(trimmed, "NoDisplay=true", 14) == 0) {
no_display = 1;
}
}
fclose(f);
if (name && exec && !no_display) {
if (wm.launcher_items_count >= capacity) {
capacity *= 2;
wm.launcher_items = realloc(wm.launcher_items, sizeof(LauncherItem) * capacity);
}
wm.launcher_items[wm.launcher_items_count].name = name;
wm.launcher_items[wm.launcher_items_count].exec = exec;
wm.launcher_items_count++;
} else {
if (name) free(name);
if (exec) free(exec);
}
}
}
closedir(dir);
}
}
void toggle_launcher(const Arg *arg) {
(void)arg;
if (wm.launcher_active) {
wm.launcher_active = 0;
XUnmapWindow(wm.dpy, wm.launcher_win);
XUngrabKeyboard(wm.dpy, CurrentTime);
return;
}
if (!wm.launcher_items) {
load_applications();
}
wm.launcher_active = 1;
wm.launcher_search[0] = '\0';
wm.launcher_selected = 0;
launcher_filter();
int screen_width = DisplayWidth(wm.dpy, wm.screen);
int screen_height = DisplayHeight(wm.dpy, wm.screen);
int win_width = launcher_width;
int win_height = launcher_height;
int x = (screen_width - win_width) / 2;
int y = (screen_height - win_height) / 2;
if (!wm.launcher_win) {
XSetWindowAttributes wa;
wa.override_redirect = True;
wa.background_pixel = wm.xft_launcher_bg.pixel;
wa.border_pixel = wm.xft_launcher_border.pixel;
wm.launcher_win = XCreateWindow(wm.dpy, wm.root, x, y, win_width, win_height, 2,
DefaultDepth(wm.dpy, wm.screen), CopyFromParent,
DefaultVisual(wm.dpy, wm.screen),
CWOverrideRedirect | CWBackPixel | CWBorderPixel, &wa);
} else {
XMoveWindow(wm.dpy, wm.launcher_win, x, y);
}
XMapRaised(wm.dpy, wm.launcher_win);
XGrabKeyboard(wm.dpy, wm.launcher_win, True, GrabModeAsync, GrabModeAsync, CurrentTime);
launcher_draw();
}
static void launcher_filter(void) {
if (wm.launcher_filtered) free(wm.launcher_filtered);
wm.launcher_filtered = malloc(sizeof(LauncherItem *) * wm.launcher_items_count);
wm.launcher_filtered_count = 0;
for (int i = 0; i < wm.launcher_items_count; i++) {
if (wm.launcher_search[0] == '\0' ||
strcasestr(wm.launcher_items[i].name, wm.launcher_search)) {
wm.launcher_filtered[wm.launcher_filtered_count++] = &wm.launcher_items[i];
}
}
if (wm.launcher_selected >= wm.launcher_filtered_count) {
wm.launcher_selected = wm.launcher_filtered_count > 0 ? wm.launcher_filtered_count - 1 : 0;
}
}
void launcher_handle_key(void) {
KeySym keysym = XLookupKeysym(&wm.ev.xkey, 0);
int len = strlen(wm.launcher_search);
if (keysym == XK_Escape) {
toggle_launcher(NULL);
return;
} else if (keysym == XK_BackSpace) {
if (len > 0) {
wm.launcher_search[len - 1] = '\0';
wm.launcher_selected = 0;
launcher_filter();
}
} else if (keysym == XK_Return) {
if (wm.launcher_filtered_count > 0 && wm.launcher_selected < wm.launcher_filtered_count) {
execute_shortcut(wm.launcher_filtered[wm.launcher_selected]->exec);
toggle_launcher(NULL);
return;
}
} else if (keysym == XK_Up) {
if (wm.launcher_selected > 0) wm.launcher_selected--;
} else if (keysym == XK_Down) {
if (wm.launcher_selected < wm.launcher_filtered_count - 1) wm.launcher_selected++;
} else {
char buf[32];
int n = XLookupString(&wm.ev.xkey, buf, sizeof(buf), NULL, NULL);
if (n > 0 && len + n < (int)sizeof(wm.launcher_search)) {
memcpy(wm.launcher_search + len, buf, n);
wm.launcher_search[len + n] = '\0';
wm.launcher_selected = 0;
launcher_filter();
}
}
launcher_draw();
}
void launcher_draw(void) {
if (!wm.launcher_win) return;
XftDraw *draw = XftDrawCreate(wm.dpy, wm.launcher_win, DefaultVisual(wm.dpy, wm.screen), wm.cmap);
XWindowAttributes wa;
XGetWindowAttributes(wm.dpy, wm.launcher_win, &wa);
// Clear background
XftDrawRect(draw, &wm.xft_launcher_bg, 0, 0, wa.width, wa.height);
int x = 20;
int y = 30;
int row_height = wm.launcher_font->height + 10;
// Draw search bar
char search_display[300];
snprintf(search_display, sizeof(search_display), "> %s", wm.launcher_search);
XftDrawStringUtf8(draw, &wm.xft_launcher_fg, wm.launcher_font, x, y, (FcChar8 *)search_display, strlen(search_display));
y += row_height + 10; // Extra padding below input
// Draw items
int start_idx = 0;
if (wm.launcher_selected >= 10) {
start_idx = wm.launcher_selected - 9;
}
for (int i = start_idx; i < wm.launcher_filtered_count && i < start_idx + 15; i++) {
if (i == wm.launcher_selected) {
XftDrawRect(draw, &wm.xft_launcher_hl_bg, 0, y - wm.launcher_font->ascent - 5, wa.width, row_height);
XftDrawStringUtf8(draw, &wm.xft_launcher_hl_fg, wm.launcher_font, x, y, (FcChar8 *)wm.launcher_filtered[i]->name, strlen(wm.launcher_filtered[i]->name));
} else {
XftDrawStringUtf8(draw, &wm.xft_launcher_fg, wm.launcher_font, x, y, (FcChar8 *)wm.launcher_filtered[i]->name, strlen(wm.launcher_filtered[i]->name));
}
y += row_height;
}
XftDrawDestroy(draw);
XFlush(wm.dpy);
}
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