Draws a rounded rectangle at the specified location with the supplied pen thickness. - Java 2D Graphics

Java examples for 2D Graphics:Rectangle

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Description

Draws a rounded rectangle at the specified location with the supplied pen thickness.

Demo Code


//package com.java2s;
import java.awt.*;

public class Main {
    /** Draws a rounded rectangle at the specified
     *  location with the supplied pen thickness.
     *  left/top are the <B>center</B> of the lines
     *  drawn. Ie width/height are from the center of one
     *  side to the center of the other. So the inside
     *  width/heights are really lineWidth less than the
     *  values of width and height, and the
     *  outside width/heights are lineWidth more.
     *//from w ww .  ja v  a  2  s.c  om
     * @param g The Graphics object.
     * @param left Center of left side edge.
     * @param top Center of the top edge.
     * @param width Distance from center of L side to
     *              center of R side.
     * @param height Distance from center of top side to
     *               center of bottom side.
     * @param arcWidth Horizontal diameter of arc at
     *                 corners.
     * @param arcHeight Vertical diameter of arc at
     *                  corners.
     * @param lineWidth Pen thickness.
     */

    public static void drawRoundRect(Graphics g, int left, int top,
            int width, int height, int arcWidth, int arcHeight,
            int lineWidth) {
        left = left - lineWidth / 2;
        top = top - lineWidth / 2;
        width = width + lineWidth;
        height = height + lineWidth;
        for (int i = 0; i < lineWidth; i++) {
            g.drawRoundRect(left, top, width, height, arcWidth, arcHeight);
            if ((i + 1) < lineWidth) {
                g.drawRoundRect(left, top, width - 1, height - 1, arcWidth,
                        arcHeight);
                g.drawRoundRect(left + 1, top, width - 1, height - 1,
                        arcWidth, arcHeight);
                g.drawRoundRect(left, top + 1, width - 1, height - 1,
                        arcWidth, arcHeight);
                g.drawRoundRect(left + 1, top + 1, width - 1, height - 1,
                        arcWidth, arcHeight);
                left = left + 1;
                top = top + 1;
                width = width - 2;
                height = height - 2;
            }
        }
    }

    /** Draws a rounded rectangle at the specified
     *  location with the supplied pen thickness and color.
     *  left/top are the <B>center</B> of the lines
     *  drawn. Ie width/height are from the center of one
     *  side to the center of the other. So the inside
     *  width/heights are really lineWidth less than the
     *  values of width and height, and the
     *  outside width/heights are lineWidth more.
     *
     * @param g The Graphics object.
     * @param left Center of left side edge.
     * @param top Center of the top edge.
     * @param width Distance from center of L side to
     *              center of R side.
     * @param height Distance from center of top side to
     *               center of bottom side.
     * @param arcWidth Horizontal diameter of arc at
     *                 corners.
     * @param arcHeight Vertical diameter of arc at
     *                  corners.
     * @param lineWidth Pen thickness.
     * @param c Pen color.
     */

    public static void drawRoundRect(Graphics g, int left, int top,
            int width, int height, int arcWidth, int arcHeight,
            int lineWidth, Color c) {
        Color origColor = g.getColor();
        g.setColor(c);
        drawRoundRect(g, left, top, width, height, arcWidth, arcHeight,
                lineWidth);
        g.setColor(origColor);
    }

    /** Draws a 1-pixel wide rounded rectangle with the
     *  specified color. Same as g.drawRoundRect except
     *  for the color.
     *
     * @param g The Graphics object.
     * @param left The x-coordinate of left edge.
     * @param top The y-coordinate of the top edge.
     * @param width Distance from L side to R side.
     * @param height Distance from top side to bottom side.
     * @param arcWidth Horizontal diameter of arc at
     *                 corners.
     * @param arcHeight Vertical diameter of arc at
     *                  corners.
     * @param c Pen color.
     */

    public static void drawRoundRect(Graphics g, int left, int top,
            int width, int height, int arcWidth, int arcHeight, Color c) {
        drawRoundRect(g, left, top, width, height, arcWidth, arcHeight, 1,
                c);
    }
}

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