#include <X11/Xlib.h>
#include <X11/Xatom.h>

#include "sugar-runner-window.h"

static Display *display = NULL;
static Window window = 0;
static Atom wm_delete_window;
static gboolean is_fullscreen = FALSE;

void
sugar_runner_window_create(int width, int height, gboolean fullscreen)
{
    Window root_window;

    if (display == NULL) {
        display = XOpenDisplay(NULL);
    }

    root_window = RootWindow(display, 0);

    window = XCreateSimpleWindow(display, root_window, 0, 0,
                                 width, height, 0, 0, 0);

    XSelectInput (display, window, StructureNotifyMask);

    if (fullscreen) {
        Atom atom;

        atom = XInternAtom(display, "_NET_WM_STATE_FULLSCREEN", True);
        XChangeProperty(display, window,
                        XInternAtom(display, "_NET_WM_STATE", True),
                        XA_ATOM, 32, PropModeReplace,
                        (unsigned char *)&atom, 1);
    }

    XMapWindow(display, window);

    wm_delete_window = XInternAtom(display, "WM_DELETE_WINDOW", False);
    XSetWMProtocols(display, window, &wm_delete_window, 1);
}

gboolean
sugar_runner_window_wait(void)
{
    XEvent event;

    XNextEvent(display, &event);

    if (event.type == ConfigureNotify) {
        XConfigureEvent configure_event = event.xconfigure;
        is_fullscreen = (DisplayWidth(display, 0) == configure_event.width &&
                         DisplayHeight(display, 0) == configure_event.height);
    }

    return TRUE;
}

gboolean
sugar_runner_window_is_fullscreen(void)
{
    return is_fullscreen;
}

unsigned long
sugar_runner_window_get_xid(void)
{
    return window;
}