Function CheckClickOnViewportSign

src/viewport.cpp:2270–2278

* Test whether a sign is below the mouse * @param vp the clicked viewport * @param x X position of click * @param y Y position of click * @param sign the sign to check * @return true if the sign was hit */

 * @return true if the sign was hit
 */
static bool CheckClickOnViewportSign(const Viewport &vp, int x, int y, const ViewportSign *sign)
{
	bool small = (vp.zoom >= ZoomLevel::Out4x);
	int sign_half_width = ScaleByZoom((small ? sign->width_small : sign->width_normal) / 2, vp.zoom);
	int sign_height = ScaleByZoom(WidgetDimensions::scaled.fullbevel.top + GetCharacterHeight(small ? FS_SMALL : FS_NORMAL) + WidgetDimensions::scaled.fullbevel.bottom, vp.zoom);

	return y >= sign->top && y < sign->top + sign_height &&
			x >= sign->center - sign_half_width && x < sign->center + sign_half_width;
}


/**