Function IsPtInWindowViewport

src/viewport.cpp:408–416

* Is a xy position inside the viewport of the window? * @param w Window to examine its viewport * @param x X coordinate of the xy position * @param y Y coordinate of the xy position * @return Pointer to the viewport if the xy position is in the viewport of the window, * otherwise \c nullptr is returned. */

 *         otherwise \c nullptr is returned.
 */
Viewport *IsPtInWindowViewport(const Window *w, int x, int y)
{
	if (w->viewport == nullptr) return nullptr;

	const Viewport &vp = *w->viewport;
	if (IsInsideMM(x, vp.left, vp.left + vp.width) && IsInsideMM(y, vp.top, vp.top + vp.height)) return w->viewport.get();

	return nullptr;
}

/**
 * Translate screen coordinate in a viewport to underlying tile coordinate.