// fullscreenhack.c
// Alistair Buxton <a.j.buxton@gmail.com>

// options:
// the real height and width of all your monitors
// this is what tester should report without the hack
#define REAL_WIDTH  (3200)
#define REAL_HEIGHT (1200)

// the height and width of the primary monitor where flash
// goes fullscreen
#define FAKE_WIDTH  (1920)
#define FAKE_HEIGHT (1200)

#include <dlfcn.h>
#include <stdio.h>
#include <X11/Xlib.h>

void __attribute__ ((constructor)) load(void);

// Called when the library is loaded and before dlopen() returns
void load(void)
{
	printf("fullscreen hack loaded...\n");
}

Status XGetGeometry(Display *display, Drawable d, Window *root_return,
			int *x_return, int *y_return,
			unsigned int *width_return,
			unsigned int *height_return,
			unsigned int *border_width_return,
			unsigned int *depth_return)
{

	typedef Status (*func)(Display *, Drawable, Window *,
				int *, int *, unsigned int *,
				unsigned int *, unsigned int *,
				unsigned int *);
	void *handle;
	Status s;
	handle = dlopen("libX11.so", RTLD_LAZY);
	func orig = dlsym(handle, "XGetGeometry");
	s = orig(display, d, root_return,
		x_return, y_return,
		width_return, height_return,
		border_width_return, depth_return);

	if(*width_return == REAL_WIDTH) *width_return = FAKE_WIDTH;
	if(*height_return == REAL_HEIGHT) *height_return = FAKE_HEIGHT;
	return s;

}