Initial commit: SkyOS source code
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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#include "wm.h"
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/* ── WM_STATE ICCCM helper ───────────────────────────────────────────── */
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void client_set_wm_state(WM *wm, Client *c, long state) {
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long data[2] = { state, None };
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XChangeProperty(wm->dpy, c->win, wm->wm_state, wm->wm_state,
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32, PropModeReplace, (unsigned char *)data, 2);
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if (state == WM_STATE_ICONIC) {
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XChangeProperty(wm->dpy, c->win, wm->net_wm_state, XA_ATOM,
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32, PropModeReplace,
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(unsigned char *)&wm->net_wm_state_hidden, 1);
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} else {
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XDeleteProperty(wm->dpy, c->win, wm->net_wm_state);
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}
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}
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static void update_net_client_list(WM *wm) {
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Atom net_client_list = XInternAtom(wm->dpy, "_NET_CLIENT_LIST", False);
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int count = 0;
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for (Client *c = wm->clients; c; c = c->next) count++;
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Window *wins = calloc(count, sizeof(Window));
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int i = 0;
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for (Client *c = wm->clients; c; c = c->next) wins[i++] = c->win;
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XChangeProperty(wm->dpy, wm->root, net_client_list, XA_WINDOW, 32,
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PropModeReplace, (unsigned char *)wins, count);
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free(wins);
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}
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/* ── add / remove ────────────────────────────────────────────────────── */
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/* smart placement: cascade from top-left, offset each window */
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static void smart_place(WM *wm, Client *c) {
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static int cascade_x = 40, cascade_y = 40;
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int sw = DisplayWidth(wm->dpy, wm->screen);
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int sh = DisplayHeight(wm->dpy, wm->screen);
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/* reset cascade if it would go off-screen */
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if (cascade_x + (int)c->w > sw - 40 || cascade_y + (int)c->h > sh - 40) {
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cascade_x = 40;
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cascade_y = 40;
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}
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c->x = cascade_x;
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c->y = cascade_y;
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cascade_x += 30;
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cascade_y += 30;
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}
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Client *client_add(WM *wm, Window win) {
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XWindowAttributes wa;
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if (!XGetWindowAttributes(wm->dpy, win, &wa)) return NULL;
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if (wa.override_redirect) return NULL;
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if (client_find_by_win(wm, win)) return NULL;
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Client *c = calloc(1, sizeof(Client));
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c->win = win;
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c->w = wa.width;
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c->h = wa.height;
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/* use application-requested position if non-zero, otherwise smart place */
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if (wa.x == 0 && wa.y == 0) {
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smart_place(wm, c);
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} else {
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c->x = wa.x;
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c->y = wa.y;
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}
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/* never land behind deskbar (top-right panel ~180px wide) */
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int sw = DisplayWidth(wm->dpy, wm->screen);
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if (c->x + (int)c->w > sw - 185 && c->y < 200)
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c->y = 40;
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/* fetch title */
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char *name = NULL;
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Atom utf8 = XInternAtom(wm->dpy, "UTF8_STRING", False);
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Atom net_wm = XInternAtom(wm->dpy, "_NET_WM_NAME", False);
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{
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Atom type; int fmt; unsigned long n, after;
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unsigned char *data = NULL;
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if (XGetWindowProperty(wm->dpy, win, net_wm, 0, 256, False,
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utf8, &type, &fmt, &n, &after, &data)
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== Success && data && n > 0) {
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snprintf(c->title, 255, "%.*s", (int)n, data);
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XFree(data);
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} else {
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if (data) XFree(data);
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if (XFetchName(wm->dpy, win, &name) && name) {
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strncpy(c->title, name, 255);
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XFree(name);
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} else {
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strncpy(c->title, "Untitled", 255);
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}
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}
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}
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int fw = (int)c->w + BORDER_W * 2;
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int fh = (int)c->h + TITLE_HEIGHT + BORDER_W;
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XSetWindowAttributes swa;
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swa.background_pixel = color_alloc(wm, COLOR_TITLE_INACTIVE);
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swa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask
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| ButtonPressMask | ButtonReleaseMask
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| PointerMotionMask | ExposureMask
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| EnterWindowMask;
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swa.override_redirect = False;
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swa.cursor = wm->cur_normal;
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c->frame = XCreateWindow(
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wm->dpy, wm->root,
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c->x, c->y, fw, fh, 0,
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CopyFromParent, InputOutput, CopyFromParent,
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CWBackPixel | CWEventMask | CWOverrideRedirect | CWCursor,
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&swa
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);
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XReparentWindow(wm->dpy, win, c->frame, BORDER_W, TITLE_HEIGHT);
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XSelectInput(wm->dpy, win, PropertyChangeMask | FocusChangeMask);
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c->next = wm->clients;
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wm->clients = c;
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XMapWindow(wm->dpy, c->frame);
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XMapWindow(wm->dpy, win);
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client_set_wm_state(wm, c, WM_STATE_NORMAL);
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update_net_client_list(wm);
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client_focus(wm, c);
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return c;
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}
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void client_remove(WM *wm, Window win) {
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Client *prev = NULL, *c = wm->clients;
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while (c) {
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if (c->win == win || c->frame == win) {
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if (prev) prev->next = c->next;
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else wm->clients = c->next;
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if (wm->focused == c) {
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wm->focused = wm->clients;
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if (wm->focused) client_focus(wm, wm->focused);
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else wm->focused = NULL;
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}
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XDestroyWindow(wm->dpy, c->frame);
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free(c);
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update_net_client_list(wm);
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return;
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}
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prev = c; c = c->next;
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}
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}
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/* ── lookup ──────────────────────────────────────────────────────────── */
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Client *client_find_by_frame(WM *wm, Window frame) {
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for (Client *c = wm->clients; c; c = c->next)
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if (c->frame == frame) return c;
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return NULL;
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}
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Client *client_find_by_win(WM *wm, Window win) {
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for (Client *c = wm->clients; c; c = c->next)
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if (c->win == win) return c;
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return NULL;
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}
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/* ── focus / raise ───────────────────────────────────────────────────── */
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void client_focus(WM *wm, Client *c) {
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if (!c || c->minimized) return;
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if (wm->focused && wm->focused != c) {
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wm->focused->focused = 0;
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frame_draw(wm, wm->focused);
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}
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wm->focused = c;
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c->focused = 1;
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XSetInputFocus(wm->dpy, c->win, RevertToPointerRoot, CurrentTime);
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XRaiseWindow(wm->dpy, c->frame);
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frame_draw(wm, c);
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/* advertise active window */
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Atom net_active = XInternAtom(wm->dpy, "_NET_ACTIVE_WINDOW", False);
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XChangeProperty(wm->dpy, wm->root, net_active, XA_WINDOW, 32,
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PropModeReplace, (unsigned char *)&c->win, 1);
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}
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void client_raise(WM *wm, Client *c) {
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XRaiseWindow(wm->dpy, c->frame);
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}
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/* ── minimize / restore ──────────────────────────────────────────────── */
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void client_minimize(WM *wm, Client *c) {
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if (c->minimized) return;
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if (c->maximized) client_unmaximize(wm, c);
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c->minimized = 1;
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c->focused = 0;
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XUnmapWindow(wm->dpy, c->frame);
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client_set_wm_state(wm, c, WM_STATE_ICONIC);
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if (wm->focused == c) {
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wm->focused = NULL;
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for (Client *n = wm->clients; n; n = n->next) {
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if (!n->minimized) { client_focus(wm, n); break; }
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}
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}
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}
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void client_restore(WM *wm, Client *c) {
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if (!c->minimized) { client_focus(wm, c); return; }
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c->minimized = 0;
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XMapWindow(wm->dpy, c->frame);
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client_set_wm_state(wm, c, WM_STATE_NORMAL);
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client_focus(wm, c);
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}
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/* ── maximize / unmaximize ───────────────────────────────────────────── */
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void client_maximize(WM *wm, Client *c) {
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if (c->maximized || c->minimized) return;
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/* save current geometry */
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c->saved_x = c->x;
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c->saved_y = c->y;
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c->saved_w = c->w;
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c->saved_h = c->h;
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c->maximized = 1;
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int sw = DisplayWidth(wm->dpy, wm->screen);
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int sh = DisplayHeight(wm->dpy, wm->screen);
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/* leave room for deskbar on the right */
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int deskbar_w = 185;
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int new_w = sw - deskbar_w - BORDER_W * 2;
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int new_h = sh - TITLE_HEIGHT - BORDER_W;
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c->x = 0; c->y = 0;
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c->w = (unsigned)new_w;
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c->h = (unsigned)new_h;
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int fw = (int)c->w + BORDER_W * 2;
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int fh = (int)c->h + TITLE_HEIGHT + BORDER_W;
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XMoveResizeWindow(wm->dpy, c->frame, c->x, c->y, fw, fh);
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XResizeWindow(wm->dpy, c->win, c->w, c->h);
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/* advertise maximized state via EWMH */
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Atom states[2] = { wm->net_wm_state_maximized_vert,
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wm->net_wm_state_maximized_horz };
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XChangeProperty(wm->dpy, c->win, wm->net_wm_state, XA_ATOM, 32,
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PropModeReplace, (unsigned char *)states, 2);
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client_focus(wm, c);
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frame_draw(wm, c);
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}
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void client_unmaximize(WM *wm, Client *c) {
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if (!c->maximized) return;
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c->maximized = 0;
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c->x = c->saved_x;
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c->y = c->saved_y;
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c->w = c->saved_w;
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c->h = c->saved_h;
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int fw = (int)c->w + BORDER_W * 2;
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int fh = (int)c->h + TITLE_HEIGHT + BORDER_W;
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XMoveResizeWindow(wm->dpy, c->frame, c->x, c->y, fw, fh);
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XResizeWindow(wm->dpy, c->win, c->w, c->h);
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XDeleteProperty(wm->dpy, c->win, wm->net_wm_state);
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client_focus(wm, c);
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frame_draw(wm, c);
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}
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void client_toggle_maximize(WM *wm, Client *c) {
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if (c->maximized) client_unmaximize(wm, c);
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else client_maximize(wm, c);
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}
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/* ── edge snap ───────────────────────────────────────────────────────── */
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void client_snap_left(WM *wm, Client *c) {
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if (c->maximized) client_unmaximize(wm, c);
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int sw = DisplayWidth(wm->dpy, wm->screen);
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int sh = DisplayHeight(wm->dpy, wm->screen);
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int deskbar_w = 185;
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int half_w = (sw - deskbar_w) / 2;
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c->x = 0;
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c->y = 0;
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c->w = (unsigned)(half_w - BORDER_W * 2);
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c->h = (unsigned)(sh - TITLE_HEIGHT - BORDER_W);
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int fw = (int)c->w + BORDER_W * 2;
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int fh = (int)c->h + TITLE_HEIGHT + BORDER_W;
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XMoveResizeWindow(wm->dpy, c->frame, c->x, c->y, fw, fh);
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XResizeWindow(wm->dpy, c->win, c->w, c->h);
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frame_draw(wm, c);
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}
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void client_snap_right(WM *wm, Client *c) {
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if (c->maximized) client_unmaximize(wm, c);
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int sw = DisplayWidth(wm->dpy, wm->screen);
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int sh = DisplayHeight(wm->dpy, wm->screen);
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int deskbar_w = 185;
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int half_w = (sw - deskbar_w) / 2;
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c->x = half_w;
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c->y = 0;
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c->w = (unsigned)(sw - deskbar_w - half_w - BORDER_W * 2);
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c->h = (unsigned)(sh - TITLE_HEIGHT - BORDER_W);
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int fw = (int)c->w + BORDER_W * 2;
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int fh = (int)c->h + TITLE_HEIGHT + BORDER_W;
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XMoveResizeWindow(wm->dpy, c->frame, c->x, c->y, fw, fh);
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XResizeWindow(wm->dpy, c->win, c->w, c->h);
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frame_draw(wm, c);
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}
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