#ifndef IGRID_H_
#define IGRID_H_

/* greebo: The interface of the grid system
 *
 * Use these methods to set/get the grid size of the xyviews
 */

#include "generic/constant.h"
#include "signal/signalfwd.h"

enum GridSize {
	GRID_0125 = -3,
	GRID_025 = -2,
	GRID_05 = -1,
	GRID_1 = 0,
	GRID_2 = 1,
	GRID_4 = 2,
	GRID_8 = 3,
	GRID_16 = 4,
	GRID_32 = 5,
	GRID_64 = 6,
	GRID_128 = 7,
	GRID_256 = 8
};

// grid renderings
enum GridLook {
	GRIDLOOK_LINES,
	GRIDLOOK_DOTLINES,
	GRIDLOOK_MOREDOTLINES,
	GRIDLOOK_CROSSES,
	GRIDLOOK_DOTS,
	GRIDLOOK_BIGDOTS,
	GRIDLOOK_SQUARES
};

class IGridManager
{
	public:
		INTEGER_CONSTANT(Version, 1);
		STRING_CONSTANT(Name, "grid");

		virtual ~IGridManager() {}

		virtual void setGridSize(GridSize gridSize) = 0;
		virtual float getGridSize() const = 0;

		virtual int getGridPower() const = 0;

		virtual void gridDown() = 0;
		virtual void gridUp() = 0;

		virtual GridLook getMajorLook() const = 0;
		virtual GridLook getMinorLook() const = 0;

		virtual void addGridChangeCallback(const SignalHandler& handler) = 0;

		virtual void gridChangeNotify() = 0;
}; // class IGridManager

// Module definitions

#include "modulesystem.h"

template<typename Type>
class GlobalModule;
typedef GlobalModule<IGridManager> GlobalGridModule;

template<typename Type>
class GlobalModuleRef;
typedef GlobalModuleRef<IGridManager> GlobalGridModuleRef;

// This is the accessor for the grid module
inline IGridManager& GlobalGrid() {
	return GlobalGridModule::getTable();
}

#endif /*IGRID_H_*/
