/**
 * Copyright 2010-2012 Jingjing Li.
 *
 * This file is part of jplot2d.
 *
 * jplot2d is free software: you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or any later version.
 *
 * jplot2d is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Lesser Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with jplot2d. If not, see .
 */
package org.jplot2d.swing.interaction;

import java.awt.Color;
import java.awt.Cursor;
import java.awt.Graphics2D;
import java.awt.MouseInfo;
import java.awt.Point;
import java.awt.Shape;
import java.awt.SystemColor;

import javax.swing.SwingUtilities;

import org.jplot2d.env.RenderEnvironment;
import org.jplot2d.interaction.InteractiveComp;
import org.jplot2d.swing.JPlot2DComponent;

/**
 * @author Jingjing Li
 * 
 */
public class SwingInteractiveComp implements InteractiveComp {

	private final JPlot2DComponent comp;

	private CursorStyle cursorStyle;

	public SwingInteractiveComp(JPlot2DComponent comp, RenderEnvironment env) {
		this.comp = comp;
	}

	public Point getCursorLocation() {
		Point p = MouseInfo.getPointerInfo().getLocation();
		SwingUtilities.convertPointFromScreen(p, comp);
		p.x -= comp.getImageOffsetX();
		p.y -= comp.getImageOffsetY();
		return p;
	}

	public void repaint() {
		comp.repaint();
	}

	public CursorStyle getCursor() {
		return cursorStyle;
	}

	public void setCursor(CursorStyle cursorStyle) {
		this.cursorStyle = cursorStyle;

		switch (cursorStyle) {
		case DEFAULT_CURSOR:
			comp.setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
			break;
		case MOVE_CURSOR:
			comp.setCursor(Cursor.getPredefinedCursor(Cursor.MOVE_CURSOR));
			break;
		case CROSSHAIR_CURSOR:
			comp.setCursor(Cursor.getPredefinedCursor(Cursor.CROSSHAIR_CURSOR));
			break;
		}
	}

	public void drawLine(Object g, int rgb, int x1, int y1, int x2, int y2) {
		Graphics2D g2 = (Graphics2D) g;
		Color c = new Color(rgb);
		g2.setColor(c);
		g2.setXORMode(comp.getPlotBackground());
		g2.drawLine(x1 + comp.getImageOffsetX(), y1 + comp.getImageOffsetY(),
				x2 + comp.getImageOffsetX(), y2 + comp.getImageOffsetY());
		g2.setPaintMode();
	}

	public void drawRectangle(Object g, int rgb, int x, int y, int width, int height) {
		Graphics2D g2 = (Graphics2D) g;
		Color c = new Color(rgb);
		g2.setColor(c);
		g2.setXORMode(comp.getPlotBackground());
		g2.drawRect(x + comp.getImageOffsetX(), y + comp.getImageOffsetY(), width, height);
		g2.setPaintMode();
	}

	public void drawShape(Object g, int rgb, Shape shape) {
		Graphics2D g2 = (Graphics2D) g;
		g2.translate(comp.getImageOffsetX(), comp.getImageOffsetY());
		Color c = new Color(rgb);
		g2.setColor(c);
		g2.setXORMode(comp.getPlotBackground());
		g2.draw(shape);
		g2.setPaintMode();
		g2.translate(-comp.getImageOffsetX(), -comp.getImageOffsetY());
	}

	public void drawTooltip(Object g, String s, int x, int y) {
		x += comp.getImageOffsetX() + 4;
		y += comp.getImageOffsetY() + 2;

		Graphics2D g2 = (Graphics2D) g;
		g2.setColor(SystemColor.infoText);
		g2.setBackground(SystemColor.info);

		y += g2.getFontMetrics().getAscent();

		int cridx = s.indexOf('\n');
		if (cridx == -1) {
			g2.drawString(s, x, y);
		} else {
			String sa = s.substring(0, cridx);
			g2.drawString(sa, x, y);

			y += g2.getFontMetrics().getHeight();
			String sb = s.substring(cridx + 1);
			g2.drawString(sb, x, y);
		}
	}
}