/**

* Copyright (c) 2007-2010, Gaudenz Alder, David Benson

*/

package com.mxgraph.canvas;

import com.mxgraph.util.mxPoint;

import com.mxgraph.view.mxCellState;

/**

* Defines the requirements for a canvas that paints the vertices and edges of

* a graph.

*/

public interface mxICanvas

{

/**

* Sets the translation for the following drawing requests.

*/

void setTranslate(double x, double y);

/**

* Returns the current translation.

*

* @return Returns the current translation.

*/

mxPoint getTranslate();

/**

* Sets the scale for the following drawing requests.

*/

void setScale(double scale);

/**

* Returns the scale.

*/

double getScale();

/**

* Draws the given cell.

*

* @param state State of the cell to be painted.

* @return Object that represents the cell.

*/

Object drawCell(mxCellState state);

/**

* Draws the given label.

*

* @param text String that represents the label.

* @param state State of the cell whose label is to be painted.

* @param html Specifies if the label contains HTML markup.

* @return Object that represents the label.

*/

Object drawLabel(String text, mxCellState state, boolean html);

}