oculus.cpp

#include <stdio.h>
#include <unistd.h>
#include "oculus.hpp"

Oculus::Oculus() {
  if ((disp = XOpenDisplay(":0")) == NULL)
      printf("Could not connect to X server\n");

  Window active = this->getActiveWindow();
  printf("%s - %dx%d\n", this->getWindowName(&active), this->getWindowWidth(&active), this->getWindowHeight(&active));
}

Window Oculus::getActiveWindow() {
  unsigned long n_items, bytes_after_ret;
  Atom atom_type_prop;
  int actual_format;
  Window *props;

  XGetWindowProperty(disp, DefaultRootWindow(disp),
                     XInternAtom(disp, "_NET_ACTIVE_WINDOW", true),
                     0, 1, false, AnyPropertyType,
                     &atom_type_prop, &actual_format,
                     &n_items, &bytes_after_ret, (unsigned char**)&props);
  return props[0];
}

char* Oculus::getWindowName(Window* window) {
  char *windowName;
  XFetchName(disp, *window, &windowName);
  return windowName;
}

int Oculus::getWindowWidth(Window* window) {
  return getWindowAttributes(window).width;
}


int Oculus::getWindowHeight(Window* window) {
  return getWindowAttributes(window).height;
}

XWindowAttributes Oculus::getWindowAttributes(Window* window) {
  XWindowAttributes attributes;
  XGetWindowAttributes(disp, *window, &attributes);
  return attributes;
}