typedef struct
{
	bool frozen;
	bool locked;
	Color color;
	String name;
	
} LayerData;

class LayerDisplay : public Display
{
	private:
	
	protected:
	
	public:
		void Paint(Draw& w, const Rect& r, const Value& q, Color ink, Color paper, dword style) const;
};

void LayerDisplay::Paint(Draw& w, const Rect& r, const Value& q, Color ink, Color paper, dword style) const
{
	// paint background
	w.DrawRect(r, White);
	
	// get rects of various parts of control
	int yMid = (r.top + r.bottom) / 2;
	int yTop = yMid - 10;
	int yBottom = yMid + 10;
	Rect fRect(r.left     , yTop, r.left + 20, yBottom);
	Rect lRect(r.left + 24, yTop, r.left + 44, yBottom);
	Rect cRect(r.left + 48, yTop, r.left + 68, yBottom);

	Rect tRect(r.left + 72, r.top, r.right, r.bottom);
	
	// recover data from value
	if(!q.IsNull())
	{
		LayerData const &ld = ValueTo<LayerData>(q);
		
		// paints the contents
		if(ld.frozen)
			w.DrawImage(fRect.Deflated(2), UppCadControlsImg::LayerOff());
		else
			w.DrawImage(fRect.Deflated(2), UppCadControlsImg::LayerOn());
		if(ld.locked)
			w.DrawImage(lRect.Deflated(2), UppCadControlsImg::LayerLocked());
		else
			w.DrawImage(lRect.Deflated(2), UppCadControlsImg::LayerUnlocked());

		w.DrawRect(cRect, ld.color);
		w.DrawLine(r.left + 48, yTop   , r.left + 68, yTop   , 0, Black);
		w.DrawLine(r.left + 68, yTop   , r.left + 68, yBottom, 0, Black);
		w.DrawLine(r.left + 68, yBottom, r.left + 48, yBottom, 0, Black);
		w.DrawLine(r.left + 48, yBottom, r.left + 48, yTop   , 0, Black);
		w.DrawText(tRect.left, tRect.top, ld.name);
	}
}