#include <assert.h>
#include "X11SharedDisplay.h"

namespace sp {

// Define a global display (for simplicity, we always connect to local one.)
::Display* sharedDisplay = NULL;
unsigned int refcount = 0;

::Display* XGetDisplay() {

	// Create if we dont have any references.
	if (refcount == 0) {
		sharedDisplay = XOpenDisplay(NULL);
	}

	refcount++;
	return sharedDisplay;
}

void XReleaseDisplay(::Display* disp) {

	assert(disp == sharedDisplay);

	if (refcount < 1) {
		return;
	}

	if (--refcount == 0) {
		XCloseDisplay(sharedDisplay);
	}
}

Atom getAtom(const std::string& name, bool onlyIfExists) {

	return XInternAtom(sharedDisplay, name.c_str(), onlyIfExists);
}

} // namespace sp