/*
 * [RS232C9Female.java]
 *
 * Summary: draw female 9-pin RS232C connector.
 *
 * Copyright: (c) 2011-2017 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 2011-01-29 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 female 9-pin RS232C connector.
 *
 * @author Roedy Green, Canadian Mind Products
 * @version 1.0 2011-01-29 initial version.
 * @since 2011-01-29
 */
class RS232C9Female extends ConnectorPanel
    {
    private static final int BOTTOM_BAR_LENGTH = 700;

    private static final int CONNECTOR_HEIGHT = 378;

    private static final int FIRST_PIN;

    private static final int FIRST_ROW;

    private static final int INSET = 10;

    private static final int INTER_PIN_SPACING = 150;

    private static final int INTER_ROW_SPACING = 180;

    private static final int LINER = 10;

    private static final int PIN_RADIUS = 50;

    private static final int ROUNDING_RADIUS = 80;

    private static final int TOP_BAR_LENGTH = 980;

    private static final int X_CENTER = 500;

    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 );

    private static final int[] pinColors = {
            0xff9c00 /* pin 1 orange */,
            0xff4040 /* pin 2 red */,
            0xff4040 /* pin 3 red */,
            0xff9c00 /* pin 4 orange */,
            0x9acd32 /* pin 5 dull green */,
            0xff9c00 /* pin 6 orange */,
            0xff9c00 /* pin 7 orange */,
            0xff9c00 /* pin 8 orange */,
            0xff9c00 /* pin 9 orange */ };

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

    RS232C9Female()
        {
        super( 1000, 425 );
        }

    /**
     * draw one pin
     *
     * @param g2d           graphics context
     * @param pin           pin number 1 to 16
     * @param pinBackground background colour for the in
     */
    private static void drawPin( Graphics2D g2d, int pin, Color pinBackground )
        {
        int x;
        final int y;
        if ( pin >= 6 )
            {
            x = ( 9 - pin ) * INTER_PIN_SPACING + INTER_PIN_SPACING / 2 + FIRST_PIN;
            y = FIRST_ROW + INTER_ROW_SPACING;
            }
        else
            {
            x = ( 5 - pin ) * 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;
            }
        drawCenteredString( g2d, Integer.toString( pin ), x, y );
        }

    /**
     * draw a RS232C 9-pin female connector
     *
     * @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 - BOTTOM_BAR_LENGTH / 2,
                X_CENTER + BOTTOM_BAR_LENGTH / 2,
                X_CENTER + TOP_BAR_LENGTH / 2,
                X_CENTER - TOP_BAR_LENGTH / 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 <= 9; pin++ )
            {
            drawPin( g2d, pin, new Color( pinColors[ pin - 1 ] ) );
            }
        }
    }