sowm/sowm.c
2019-10-13 22:29:09 +03:00

365 lines
7.7 KiB
C

// sowm
// An itsy bitsy floating window manager
// with roots in catwm.
#include <X11/Xlib.h>
#include <X11/XF86keysym.h>
#include <X11/keysym.h>
#include <stdlib.h>
#include <signal.h>
#include <unistd.h>
#define WIN (c=list;c;c=c->next)
#define FOC(W) XSetInputFocus(dis, W, RevertToParent, CurrentTime);
typedef union {
const char** com;
const int i;
} Arg;
struct key {
unsigned int mod;
KeySym keysym;
void (*function)(const Arg arg);
const Arg arg;
};
typedef struct client client;
struct client{
client *next, *prev;
Window win;
XWindowAttributes a;
int f;
};
typedef struct ws ws;
struct ws{client *list;};
static void button_press(XEvent *e);
static void button_release();
static void configure_request(XEvent *e);
static void key_grab();
static void key_press(XEvent *e);
static void map_request(XEvent *e);
static void notify_destroy(XEvent *e);
static void notify_enter(XEvent *e);
static void notify_motion(XEvent *e);
static void run(const Arg arg);
static void win_add(Window w);
static void win_center(Window w);
static void win_center_current();
static void win_del(Window w);
static void win_fs(Window w);
static void win_fs_current();
static void win_kill();
static void win_next();
static void win_to_ws(const Arg arg);
static void ws_go(const Arg arg);
static void ws_save(int i);
static void ws_sel(int i);
static client *list = { 0 };
static ws ws_list[10];
static int desk = 1, sh, sw, s, j;
static Display *dis;
static Window root, cur;
static XButtonEvent start;
static XWindowAttributes attr;
#include "config.h"
static void (*events[LASTEvent])(XEvent *e) = {
[ButtonPress] = button_press,
[ButtonRelease] = button_release,
[ConfigureRequest] = configure_request,
[KeyPress] = key_press,
[MapRequest] = map_request,
[DestroyNotify] = notify_destroy,
[EnterNotify] = notify_enter,
[MotionNotify] = notify_motion
};
void notify_destroy(XEvent *e) {
win_del(e->xdestroywindow.window);
if (list) FOC(list->win);
}
void notify_enter(XEvent *e) {
if (e->xcrossing.window != root) FOC(e->xcrossing.window)
}
void notify_motion(XEvent *e) {
client *c;
if (start.subwindow != None) {
int xdiff = e->xbutton.x_root - start.x_root;
int ydiff = e->xbutton.y_root - start.y_root;
while(XCheckTypedEvent(dis, MotionNotify, e));
XMoveResizeWindow(dis, start.subwindow,
attr.x + (start.button==1 ? xdiff : 0),
attr.y + (start.button==1 ? ydiff : 0),
attr.width + (start.button==3 ? xdiff : 0),
attr.height + (start.button==3 ? ydiff : 0));
}
for WIN if (c->win == start.subwindow) c->f = 0;
}
void key_grab() {
KeyCode code;
for (int i=0; i < sizeof(keys)/sizeof(*keys); ++i)
if ((code = XKeysymToKeycode(dis, keys[i].keysym)))
XGrabKey(dis, code, keys[i].mod, root,
True, GrabModeAsync, GrabModeAsync);
}
void key_press(XEvent *e) {
KeySym keysym = XKeycodeToKeysym(dis, e->xkey.keycode, 0);
for (int i=0; i < sizeof(keys)/sizeof(*keys); ++i)
if (keys[i].keysym == keysym && keys[i].mod == e->xkey.state)
keys[i].function(keys[i].arg);
}
void button_press(XEvent *e) {
if (e->xbutton.subwindow == None) return;
XGetWindowAttributes(dis, e->xbutton.subwindow, &attr);
XRaiseWindow(dis, e->xbutton.subwindow);
start = e->xbutton;
}
void button_release() {
start.subwindow = None;
}
Window win_current() {
XGetInputFocus(dis, &cur, &j);
return cur;
}
void win_add(Window w) {
client *c, *t;
if (!(c = (client *)calloc(1,sizeof(client))))
exit(1);
if (!list) {
c->next = 0;
c->prev = 0;
c->win = w;
list = c;
} else {
for (t=list;t->next;t=t->next);
c->next = 0;
c->prev = t;
c->win = w;
t->next = c;
}
ws_save(desk);
}
void win_del(Window w) {
client *c;
for WIN if (c->win == w) {
if (!c->prev && !c->next) {
free(list);
list = 0;
ws_save(desk);
return;
}
if (!c->prev) {
list = c->next;
c->next->prev = 0;
} else if (!c->next) {
c->prev->next = 0;
} else {
c->prev->next = c->next;
c->next->prev = c->prev;
}
free(c);
ws_save(desk);
return;
}
}
void win_kill() {
win_current();
if (cur != root) XKillClient(dis, cur);
}
void win_center(Window w) {
XGetWindowAttributes(dis, w, &attr);
XMoveWindow(dis, w, sw / 2 - attr.width / 2,
sh / 2 - attr.height / 2);
}
void win_fs(Window w) {
client *c;
for WIN if (c->win == w) {
if ((c->f = c->f == 0 ? 1 : 0)) {
XGetWindowAttributes(dis, w, &c->a);
XMoveResizeWindow(dis, w, 0, 0, sw, sh);
} else
XMoveResizeWindow(dis, w, c->a.x, c->a.y, c->a.width, c->a.height);
}
}
void win_to_ws(const Arg arg) {
int tmp = desk;
win_current();
if (arg.i == tmp) return;
ws_sel(arg.i);
win_add(cur);
ws_save(arg.i);
ws_sel(tmp);
win_del(cur);
XUnmapWindow(dis, cur);
ws_save(tmp);
if (list) FOC(list->win);
}
void win_next() {
win_current();
client *c;
if (cur == root) return;
if (list) {
for WIN if (c->win == cur) break;
c = c->next ? c->next : list;
FOC(c->win);
XRaiseWindow(dis, c->win);
}
}
void win_fs_current() {
win_fs(win_current());
}
void win_center_current() {
win_center(win_current());
}
void ws_go(const Arg arg) {
client *c;
int tmp = desk;
if (arg.i == desk) return;
ws_save(desk);
ws_sel(arg.i);
if (list) for WIN XMapWindow(dis, c->win);
ws_sel(tmp);
if (list) for WIN XUnmapWindow(dis, c->win);
ws_sel(arg.i);
if (list) FOC(list->win);
}
void ws_save(int i) {
ws_list[i].list = list;
}
void ws_sel(int i) {
list = ws_list[i].list;
desk = i;
}
void configure_request(XEvent *e) {
XConfigureRequestEvent *ev = &e->xconfigurerequest;
XWindowChanges wc;
wc.width = ev->width;
wc.height = ev->height;
wc.sibling = ev->above;
wc.stack_mode = ev->detail;
XConfigureWindow(dis, ev->window, ev->value_mask, &wc);
}
void map_request(XEvent *e) {
Window w = e->xmaprequest.window;
XSelectInput(dis, w, PropertyChangeMask|StructureNotifyMask|
EnterWindowMask|FocusChangeMask);
win_center(w);
XMapWindow(dis, w);
FOC(w);
win_add(w);
}
void run(const Arg arg) {
if (fork()) return;
if (dis) close(ConnectionNumber(dis));
setsid();
execvp((char*)arg.com[0], (char**)arg.com);
}
int xerror(Display *dis, XErrorEvent *ee) {
return 0;
}
int main(void) {
XEvent ev;
if (!(dis = XOpenDisplay(0x0))) return 0;
signal(SIGCHLD, SIG_IGN);
XSetErrorHandler(xerror);
s = DefaultScreen(dis);
root = RootWindow(dis, s);
sw = XDisplayWidth(dis, s);
sh = XDisplayHeight(dis, s);
key_grab();
for (int i=0; i < sizeof(ws_list)/sizeof(*ws_list); ++i)
ws_list[i].list = 0;
ws_go((Arg){.i = 1});
XSelectInput(dis, root, SubstructureNotifyMask|
SubstructureRedirectMask|EnterWindowMask|LeaveWindowMask);
XGrabButton(dis, 1, Mod4Mask, root, True,
ButtonPressMask|ButtonReleaseMask|PointerMotionMask,
GrabModeAsync, GrabModeAsync, None, None);
XGrabButton(dis, 3, Mod4Mask, root, True,
ButtonPressMask|ButtonReleaseMask|PointerMotionMask,
GrabModeAsync, GrabModeAsync, None, None);
while(1 && !XNextEvent(dis, &ev))
if (events[ev.type]) events[ev.type](&ev);
}