/*
 * [USB2Header.java]
 *
 * Summary: Draw USB2 motherboad header male.
 *
 * Copyright: (c) 2013-2017 Roedy Green, Canadian Mind Products, http://mindprod.com
 *
 * Licence: This software may be copied and used freely for any purpose but military.
 *          http://mindprod.com/contact/nonmil.html
 *
 * Requires: JDK 1.8+
 *
 * Created with: JetBrains IntelliJ IDEA IDE http://www.jetbrains.com/idea/
 *
 * Version History:
 *  1.0 2013-02-11 initial version.
 */
package com.mindprod.connectors;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Polygon;

/**
 * Draw USB2 motherboad header male.
 *
 * @author Roedy Green, Canadian Mind Products
 * @version 1.0 2013-02-11 initial version.
 * @since 2013-02-11
 */
class USB2Header extends ConnectorPanel
    {
    /**
     * height of connector
     */
    private static final int CONNECTOR_HEIGHT = 300;

    /**
     * width of connector
     */
    private static final int CONNECTOR_WIDTH = 750;

    /**
     * x of first pin on right
     */
    private static final int FIRST_PIN;

    /**
     * y of first row
     */
    private static final int FIRST_ROW;

    /**
     * inset from edge of image
     */
    private static final int INSET = 10;

    /**
     * distance x between pins
     */
    private static final int INTER_PIN_SPACING = 135;

    /**
     * distance y between pins
     */
    private static final int INTER_ROW_SPACING = 135;

    /**
     * how many pins we draw
     */
    private static final int LAST_PIN_NUMBER = 10;

    /**
     * width of circle around pins
     */
    private static final int LINER = 10;

    /**
     * radius of pins
     */
    private static final int PIN_RADIUS = 50;

    /**
     * rounding raius for connector corners
     */
    private static final int ROUNDING_RADIUS = 80;

    /**
     * x centre of image
     */
    private static final int X_CENTER = 500;

    /**
     * y centre of image
     */
    private static final int Y_CENTER;

    /**
     * color used to draw the outline of a component
     */
    private static final Color PIN_OUTLINE_COLOR = new Color( 0x003000 );

    /**
     * colours for eachj of the pins
     */
    private static final int[] pinColors = {
            0xa0a0a0 /* pin 1 grey */,
            0x000000 /* pin 2 black */,
            0x66dd00 /* pin 3 green */,
            0xffffff /* pin 4 white */,
            0xff4040 /* pin 5 red */,
            0xff4040 /* pin 6 red */,
            0xffffff /* pin 7 white */,
            0x66dd00 /* pin 8 green */,
            0x000000 /* pin 9 black */,
            0xfff0e0 /* pin 10  orange  */
    };

    static
        {
        FIRST_PIN = X_CENTER + INTER_PIN_SPACING * 2;   // on right
        Y_CENTER = ( CONNECTOR_HEIGHT / 2 ) + INSET;
        FIRST_ROW = Y_CENTER - INTER_ROW_SPACING / 2;
        }

    USB2Header()
        {
        super( 1000, 350 );
        }

    /**
     * draw one pin
     *
     * @param g2d           graphics context
     * @param pin           pin number 1 to 9
     * @param pinBackground background colour for the in
     */
    private static void drawPin( Graphics2D g2d, int pin, Color pinBackground )
        {
        int x;
        final int y;
        // 5 4 3 2 1
        // 6 7 8 9 10
        if ( pin >= 6 )
            {
            x = -( LAST_PIN_NUMBER - pin ) * INTER_PIN_SPACING + FIRST_PIN;
            y = FIRST_ROW + INTER_ROW_SPACING;
            }
        else
            {
            x = -( pin - 1 ) * INTER_PIN_SPACING + FIRST_PIN;
            y = FIRST_ROW;
            }
        g2d.setColor( pinBackground );
        g2d.fillOval( x - PIN_RADIUS, y - PIN_RADIUS, 2 * PIN_RADIUS, 2 * PIN_RADIUS );
        g2d.setColor( PIN_OUTLINE_COLOR );
        g2d.drawOval( x - PIN_RADIUS, y - PIN_RADIUS, 2 * PIN_RADIUS, 2 * PIN_RADIUS );
        // tweak position
        if ( pin >= 10 )
            {
            x -= 3;
            }
        if (
                pinBackground.equals( Color.BLACK ) )
            {
            g2d.setColor( Color.WHITE );
            }
        drawCenteredString( g2d, Integer.toString( pin ), x, y );
        }

    /**
     * draw aUSB2 motherboad header male
     *
     * @param g where to paint
     */
    public void paintComponent( Graphics g )
        {
        super.paintComponent( g );
        final Graphics2D g2d = ( Graphics2D ) g;
        // D connector contains three rows of pins, 1..15 with pin 9 missing.
        final int yTop = INSET;
        final int yBottom = CONNECTOR_HEIGHT + INSET;
        //  whole stepped connector
        g2d.setColor( HOLE_COLOR );
        g2d.setStroke( new BasicStroke( LINER ) );
        // start bottom left and go counterclockwise
        Polygon outline = new Polygon( new int[] {
                X_CENTER - CONNECTOR_WIDTH / 2,
                X_CENTER + CONNECTOR_WIDTH / 2,
                X_CENTER + CONNECTOR_WIDTH / 2,
                X_CENTER - CONNECTOR_WIDTH / 2,
        }
                ,
                new int[] {
                        yBottom,
                        yBottom,
                        yTop,
                        yTop,
                },
                4
        );
        RoundPolygon.fillRoundPolygon( g2d, outline, ROUNDING_RADIUS );
        g2d.setColor( OUTLINE_COLOR );
        RoundPolygon.drawRoundPolygon( g2d, outline, ROUNDING_RADIUS );
        g2d.setFont( new Font( "dialog", Font.PLAIN, 60 ) );
        g2d.setColor( OUTLINE_COLOR );
        for ( int pin = 1; pin <= LAST_PIN_NUMBER; pin++ )
            {
            drawPin( g2d, pin, new Color( pinColors[ pin - 1 ] ) );
            }
        }
    }