69 lines
1.8 KiB
C
69 lines
1.8 KiB
C
//go:build linux && !wayland
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <X11/Xlib.h>
|
|
#include <X11/Xatom.h>
|
|
#include <unistd.h>
|
|
|
|
#include "xresize.h"
|
|
|
|
// thanks ChatGPT ;)
|
|
int find_windows_by_pid(Display *display, Window root, pid_t pid, Window* out, int n) {
|
|
Window *children;
|
|
unsigned int nchildren;
|
|
if (!XQueryTree(display, root, &root, &root, &children, &nchildren)) {
|
|
return 0;
|
|
}
|
|
|
|
for (unsigned int i = 0; i < nchildren; i++) {
|
|
Atom pidAtom = XInternAtom(display, "_NET_WM_PID", True);
|
|
if (pidAtom != None) {
|
|
Atom type;
|
|
int format;
|
|
unsigned long nitems, bytes_after;
|
|
unsigned char *prop_pid = NULL;
|
|
|
|
if (XGetWindowProperty(display, children[i], pidAtom, 0, 1, False, XA_CARDINAL,
|
|
&type, &format, &nitems, &bytes_after, &prop_pid) == Success && prop_pid) {
|
|
if (pid == *((pid_t *)prop_pid)) {
|
|
out[n++] = children[i];
|
|
}
|
|
XFree(prop_pid);
|
|
}
|
|
}
|
|
|
|
n = find_windows_by_pid(display, children[i], pid, out, n);
|
|
}
|
|
|
|
XFree(children);
|
|
return n;
|
|
}
|
|
|
|
void send_resize_event(Display *display, Window window, int width, int height) {
|
|
XResizeWindow(display, window, width, height);
|
|
XFlush(display);
|
|
}
|
|
|
|
int send_resize_to_pid(int pid, int w, int h) {
|
|
Display *display = XOpenDisplay(NULL);
|
|
if (!display) {
|
|
return 1;
|
|
}
|
|
int ret = 0;
|
|
Window windows[128];
|
|
Window root = DefaultRootWindow(display);
|
|
|
|
int n = find_windows_by_pid(display, root, pid, &windows, 0);
|
|
if (n > 0) {
|
|
for (int i = 0; i < n; i++) {
|
|
send_resize_event(display, windows[i], w, h);
|
|
}
|
|
} else {
|
|
ret = 1;
|
|
}
|
|
|
|
XCloseDisplay(display);
|
|
return ret;
|
|
}
|