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/*
 * This is part of Geomajas, a GIS framework, http://www.geomajas.org/.
 *
 * Copyright 2008-2015 Geosparc nv, http://www.geosparc.com/, Belgium.
 *
 * The program is available in open source according to the GNU Affero
 * General Public License. All contributions in this program are covered
 * by the Geomajas Contributors License Agreement. For full licensing
 * details, see LICENSE.txt in the project root.
 */

package org.geomajas.gwt2.client.map.layer;

import org.geomajas.annotation.Api;
import org.geomajas.geometry.Bbox;
import org.geomajas.gwt2.client.gfx.FontStyle;

import java.io.Serializable;

/**
 * Generic configuration object for legend creation, used in the {@link LegendUrlSupported} interface. It is important
 * to note that not all legend creation services may support all the fields within this configuration object. It is up
 * to the {@link LegendUrlSupported} implementation to specify what is supported and what is not.
 * 
 * @author Pieter De Graef
 * @since 2.0.0
 */
@Api(allMethods = true)
public class LegendConfig implements Serializable {

	private static final long serialVersionUID = 200L;

	/** Default icon size used the legend icons. */
	public static final int DEFAULT_ICON_SIZE = 20;

	/** Default icon size used the legend icons. */
	public static final String DEFAULT_IMAGE_FORMAT = "PNG";

	private int iconWidth = DEFAULT_ICON_SIZE;

	private int iconHeight = DEFAULT_ICON_SIZE;

	private FontStyle fontStyle;

	private String imageFormat = DEFAULT_IMAGE_FORMAT;

	private String exceptions = DEFAULT_IMAGE_FORMAT;

	private Bbox bounds;
	
	private Integer width;
	
	private Integer height;
	
	private Double dpi;

	/** Default constructor. Makes sure everything has a default value, to minimize the chance of a NPE. */
	public LegendConfig() {
		fontStyle = new FontStyle();
	}
	
	/**
	 * Get the (optional) width in pixels of the legend.
	 * 
	 * @return the width in pixels or null
	 * @since 2.2.0
	 */
	public Integer getWidth() {
		return width;
	}

	/**
	 * Set the (optional) width in pixels of the legend.
	 * 
	 * @param width
	 * @since 2.2.0
	 */
	public void setWidth(Integer width) {
		this.width = width;
	}

	/**
	 * Get the (optional) height in pixels of the legend.
	 * 
	 * @return the height in pixels or null
	 * @since 2.2.0
	 */
	public Integer getHeight() {
		return height;
	}

	/**
	 * Set the (optional) height in pixels of the legend.
	 * 
	 * @param height
	 * @since 2.2.0
	 */
	public void setHeight(Integer height) {
		this.height = height;
	}
	
	/**
	 * Get the DPI for which the legend graphic should render correctly (assuming font size in points).
	 * 
	 * @since 2.2.0
	 */
	public Double getDpi() {
		return dpi;
	}
	
	/**
	 * Set the DPI for which the legend graphic should render correctly (assuming font size in points). This parameter
	 * can be set to request a higher resolution image. The DPI of the default image is assumed to be the OGC DPI =
	 * 90.714. For a DPI = 2 * 90.714 = 181.428, the image will be twice as large. This value will only be used if no
	 * explicit width and height are requested. Current supported by Geoserver.
	 * 
	 * @param dpi
	 * @since 2.2.0
	 */
	public void setDpi(Double dpi) {
		this.dpi = dpi;
	}

	/**
	 * Get the width for the icons in the legend, expressed in pixels.
	 * 
	 * @return The width for the icons in the legend, expressed in pixels.
	 */
	public int getIconWidth() {
		return iconWidth;
	}

	/**
	 * Set the width for the icons in the legend, expressed in pixels.
	 * 
	 * @param iconWidth
	 *            The new width.
	 */
	public void setIconWidth(int iconWidth) {
		this.iconWidth = iconWidth;
	}

	/**
	 * Get the height for the icons in the legend, expressed in pixels.
	 * 
	 * @return The height for the icons in the legend, expressed in pixels.
	 */
	public int getIconHeight() {
		return iconHeight;
	}

	/**
	 * Set the height for the icons in the legend, expressed in pixels.
	 * 
	 * @param iconHeight
	 *            The new height.
	 */
	public void setIconHeight(int iconHeight) {
		this.iconHeight = iconHeight;
	}

	/**
	 * Get the preferred font style for the labels within the legend.
	 * 
	 * @return The preferred font style.
	 */
	public FontStyle getFontStyle() {
		return fontStyle;
	}

	/**
	 * Set the preferred font style for the labels within the legend.
	 * 
	 * @param fontStyle
	 *            The preferred font style.
	 */
	public void setFontStyle(FontStyle fontStyle) {
		this.fontStyle = fontStyle;
	}

	/**
	 * Get the image format for the legend image (i.e. PNG, JPG, GIF).
	 * 
	 * @return The preferred image format.
	 */
	public String getImageFormat() {
		return imageFormat;
	}

	/**
	 * Set the image format for the legend image (i.e. PNG, JPG, GIF).
	 * 
	 * @param imageFormat
	 *            The new image format.
	 */
	public void setImageFormat(String imageFormat) {
		this.imageFormat = imageFormat;
	}

	/**
	 * Get the bounding box for the legend. It may be that a legend image is built reflecting styles within a certain
	 * area. Note that this setting is not often supported.
	 * 
	 * @return The bounding box used for legend creation.
	 */
	public Bbox getBounds() {
		return bounds;
	}

	/**
	 * Set the bounding box for the legend. It may be that a legend image is built reflecting styles within a certain
	 * area. Note that this setting is not often supported.
	 * 
	 * @param bounds
	 *            The bounds to use for legend creation.
	 */
	public void setBounds(Bbox bounds) {
		this.bounds = bounds;
	}

	/**
	 * Get the mimetype to be used in case of an exception.
	 * 
	 * @return The mimetype to be used in case of an exception.
	 */
	public String getExceptions() {
		return exceptions;
	}

	/**
	 * Set the mimetype to be used in case of an exception.
	 * 
	 * @param exceptions
	 *            The mimetype to be used in case of an exception.
	 */
	public void setExceptions(String exceptions) {
		this.exceptions = exceptions;
	}
}