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#include <string.h>
#include <stdlib.h>
#include <X11/Xatom.h>
#include <X11/Xproto.h>
#include <X11/Xutil.h>
#include "glitch.h"
extern WindowManager wm;
static void draw_switcher(void) {
if (!wm.cycle_win || wm.cycle_count == 0) return;
XSetWindowAttributes wa;
wa.background_pixel = WhitePixel(wm.dpy, wm.screen);
XChangeWindowAttributes(wm.dpy, wm.cycle_win, CWBackPixel, &wa);
XClearWindow(wm.dpy, wm.cycle_win);
int box_size = 100;
int x_offset = 0;
int y_offset = 0;
for (int i = 0; i < wm.cycle_count; i++) {
Window w = wm.cycle_clients[i];
int is_selected = (i == wm.active_cycle_index);
// Draw box background
if (is_selected) {
XSetForeground(wm.dpy, DefaultGC(wm.dpy, wm.screen), wm.xft_bg_color.pixel);
XFillRectangle(wm.dpy, wm.cycle_win, DefaultGC(wm.dpy, wm.screen), x_offset, y_offset, box_size, box_size);
} else {
XSetForeground(wm.dpy, DefaultGC(wm.dpy, wm.screen), WhitePixel(wm.dpy, wm.screen));
XFillRectangle(wm.dpy, wm.cycle_win, DefaultGC(wm.dpy, wm.screen), x_offset, y_offset, box_size, box_size);
}
// Get Program Name
char *prog_name = NULL;
XClassHint ch;
if (XGetClassHint(wm.dpy, w, &ch)) {
prog_name = ch.res_class;
if (prog_name) {
char *dash = strchr(prog_name, '-');
if (dash) *dash = '\0';
}
if (ch.res_name) XFree(ch.res_name);
}
// Get Window Title
char *win_title = NULL;
if (!XFetchName(wm.dpy, w, &win_title)) {
Atom utf8_string = XInternAtom(wm.dpy, "UTF8_STRING", False);
XGetWindowProperty(wm.dpy, w, XInternAtom(wm.dpy, "_NET_WM_NAME", False), 0, (~0L), False, utf8_string, &(Atom){0}, &(int){0}, &(unsigned long){0}, &(unsigned long){0}, (unsigned char **)&win_title);
}
XftDraw *draw = XftDrawCreate(wm.dpy, wm.cycle_win, DefaultVisual(wm.dpy, wm.screen), wm.cmap);
if (draw) {
XftColor *color = is_selected ? &wm.xft_color : &wm.xft_root_bg_color;
if (prog_name) {
char truncated[9];
strncpy(truncated, prog_name, 8);
truncated[8] = '\0';
XftDrawStringUtf8(draw, color, wm.font, x_offset + 10, y_offset + 70, (const FcChar8 *)truncated, strlen(truncated));
}
if (win_title) {
char truncated[9];
strncpy(truncated, win_title, 8);
truncated[8] = '\0';
XftDrawStringUtf8(draw, color, wm.font, x_offset + 10, y_offset + 90, (const FcChar8 *)truncated, strlen(truncated));
}
XftDrawDestroy(draw);
}
if (prog_name) XFree(prog_name);
if (win_title) XFree(win_title);
x_offset += box_size;
}
XFlush(wm.dpy);
}
void end_cycling(void) {
if (!wm.is_cycling) return;
wm.is_cycling = 0;
if (wm.cycle_win) {
XDestroyWindow(wm.dpy, wm.cycle_win);
wm.cycle_win = None;
}
if (wm.cycle_clients) {
free(wm.cycle_clients);
wm.cycle_clients = NULL;
}
wm.cycle_count = 0;
wm.active_cycle_index = -1;
XUngrabKeyboard(wm.dpy, CurrentTime);
log_message(stdout, LOG_DEBUG, "Ended window cycling");
}
void cycle_active_window(const Arg *arg) {
// If not already cycling, initialize
if (!wm.is_cycling) {
wm.is_cycling = 1;
// Grab keyboard to catch Alt release (key release)
// We grab it on the root window.
XGrabKeyboard(wm.dpy, wm.root, True, GrabModeAsync, GrabModeAsync, CurrentTime);
// Count clients - allocate extra to handle new windows mapping during this process
int count = 0;
Client *c = wm.clients;
while (c) {
count++;
c = c->next;
}
if (count == 0) {
end_cycling();
return;
}
wm.cycle_clients = malloc(sizeof(Window) * (count + 10));
wm.cycle_count = 0;
wm.active_cycle_index = 0;
// Filter for current desktop and mapped windows
c = wm.clients;
int current_window_index = -1;
while (c) {
Window w = c->window;
unsigned long desktop = 0;
Atom actual_type;
int actual_format;
unsigned long nitems, bytes_after;
unsigned char *prop = NULL;
XErrorHandler old = XSetErrorHandler(ignore_x_error);
int status = XGetWindowProperty(wm.dpy, w, _NET_WM_DESKTOP, 0, 1, False, XA_CARDINAL, &actual_type, &actual_format, &nitems, &bytes_after, &prop);
XSync(wm.dpy, False);
XSetErrorHandler(old);
int on_current_desktop = 0;
if (status == Success && prop && nitems > 0) {
desktop = *(unsigned long *)prop;
if (desktop == wm.current_desktop) {
on_current_desktop = 1;
}
}
if (prop) XFree(prop);
if (is_sticky(w)) on_current_desktop = 1;
if (on_current_desktop) {
XWindowAttributes wa;
XGetWindowAttributes(wm.dpy, w, &wa);
if (wa.map_state == IsViewable) {
wm.cycle_clients[wm.cycle_count] = w;
if (w == wm.active) {
current_window_index = wm.cycle_count;
}
wm.cycle_count++;
}
}
c = c->next;
}
if (wm.cycle_count == 0) {
end_cycling();
return;
}
wm.active_cycle_index = (current_window_index + 1) % wm.cycle_count;
// Create switcher window
int box_size = 100;
int width = (box_size * wm.cycle_count);
int height = box_size;
int screen_width = DisplayWidth(wm.dpy, wm.screen);
int screen_height = DisplayHeight(wm.dpy, wm.screen);
int x = (screen_width - width) / 2;
int y = (screen_height * 2) / 3;
XSetWindowAttributes wa;
wa.override_redirect = True;
wa.background_pixel = BlackPixel(wm.dpy, wm.screen);
wa.border_pixel = BlackPixel(wm.dpy, wm.screen);
wm.cycle_win = XCreateWindow(wm.dpy, wm.root, x, y, width, height, 0, CopyFromParent, InputOutput, CopyFromParent, CWOverrideRedirect | CWBackPixel | CWBorderPixel, &wa);
XMapRaised(wm.dpy, wm.cycle_win);
} else {
// Already cycling, just move selection
int delta = (arg->i == 0) ? 1 : -1;
wm.active_cycle_index = (wm.active_cycle_index + delta + wm.cycle_count) % wm.cycle_count;
}
draw_switcher();
}
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