~ubuntu-branches/debian/stretch/insubstantial/stretch

/*

 * AbstractImageBorder.java

 *

 * Created on March 27, 2007, 9:19 AM

 *

 * Copyright 2006-2007 Nigel Hughes

 *

 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except

 * in compliance with the License. You may obtain a copy of the License at http://www.apache.org/

 * licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR

 * CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language

 * governing permissions and limitations under the License.

 */

 

package org.pushingpixels.lafwidget.contrib.blogofbug.swing.borders;

 

import java.awt.*;

import java.awt.image.BufferedImage;

import java.net.URL;

 

import org.pushingpixels.lafwidget.contrib.blogofbug.utility.ImageUtilities;

 

 

/**

 *

 * @author nigel

 */

public class AbstractImageBorder {

    

  /**

   * Creates a new ImageBofder loading the image from the supplied URL

   * @param imageURL The location of the image to use

   * @param imageInsets The insets around the edge of the image that allow the cookie-cut-and-stretch of the image 

   * around the edge of the border

   */

  public AbstractImageBorder(URL imageURL, Insets imageInsets){

        this.imageInsets = imageInsets;

        borderImage = ImageUtilities.loadCompatibleImage(imageURL.toString());        

  }    

    

  /** 

   * Creates a new ImageBorder using the supplied image and the insets

   * 

   * @param borderImage The image to be used as the border

   * @param imageInsets The insets around the edge of the image that allow the cookie-cut-and-stretch of the image

   * around the edge of the border

   */

  public AbstractImageBorder(BufferedImage borderImage, Insets imageInsets) {

    this.borderImage = borderImage;

    this.imageInsets = imageInsets;

  }

 

 

    protected BufferedImage borderImage;

 

 

    protected Insets imageInsets;

 

 

    /** 

     * Paints the border around the specified component

     * 

     * @param compWidth width of the target component

     * @param compHeight height of the target component

     * @param g The graphics context

     * @param x The x offset

     * @param y The y offset

     * @param width The width

     * @param height The height

     */

    public void paintBorder(int compWidth, int compHeight, Graphics g, int x, int y, int width, int height) {

 

        Graphics2D g2 = (Graphics2D) g;

        int imageWidth = borderImage.getWidth();

        int imageHeight = borderImage.getHeight();

        

        //Top-left corner

        drawSlice(g2,0,0,imageInsets.left,imageInsets.top,0,0);

        //Top-right corner

        drawSlice(g2,imageWidth-imageInsets.right,0,imageInsets.right,imageInsets.bottom,

                compWidth-imageInsets.right,0);

        //Bottom-left corner

        drawSlice(g2,0,imageHeight-imageInsets.bottom,imageInsets.left,imageInsets.bottom,0,compHeight-imageInsets.bottom);

 

        //Bottom-right corner

        drawSlice(g2,imageWidth-imageInsets.right,imageHeight-imageInsets.bottom,imageInsets.left,imageInsets.bottom,compWidth-imageInsets.right,compHeight-imageInsets.bottom);

 

        //Draw left side

        g2.drawImage(borderImage,0,imageInsets.top,imageInsets.left,compHeight-imageInsets.bottom,

                0,imageInsets.top,imageInsets.left,imageHeight-imageInsets.bottom,null);

 

        //Draw right side

        g2.drawImage(borderImage,compWidth-imageInsets.right ,imageInsets.top+6,compWidth,compHeight-imageInsets.bottom,

                imageWidth-imageInsets.right,imageInsets.top,imageWidth,imageHeight-imageInsets.bottom,null);

 

        //Draw top side

        g2.drawImage(borderImage,imageInsets.left ,0,compWidth-imageInsets.left,imageInsets.top,

                imageInsets.left,0,imageWidth-imageInsets.right,imageInsets.top,null);

        

        //Draw bottom side

        g2.drawImage(borderImage,imageInsets.left ,compHeight-imageInsets.bottom,compWidth-imageInsets.left,compHeight,

                imageInsets.left,imageHeight-imageInsets.bottom,imageWidth-imageInsets.right,imageHeight,null);

 

    }

 

  

    /** 

     * Sets the insets around the edge of the image to be used to cookie cut the image into a border

     * 

     * @param insets The edges of the image

     */

    public void setInsets(Insets insets){

        this.imageInsets = insets;

    }

    

    public Insets getImageInsets(){

        return (Insets) imageInsets.clone();

    }

    

  /**

   * Paints a stretched version of the center of the image (as the border is drawn

   * first, then the component paints itself) so that the component can use it in 

   * its own paint if the border lends itself to having a centre area over-painted

   *

   * @param g2 The graphics context

   * @param compWidth width of the target component

   * @param compHeight height of the target component

   */

  public void paintCenter(Graphics2D g2, int compWidth,int compHeight){

    int imageWidth = borderImage.getWidth();

    int imageHeight = borderImage.getHeight();

 

    //draw center

    g2.drawImage(borderImage, imageInsets.left,imageInsets.top,compWidth-imageInsets.right,compHeight-imageInsets.bottom,

        imageInsets.left,imageInsets.top,imageWidth-imageInsets.right,imageHeight-imageInsets.bottom,null);       

  }

  

  /**

   * Draws a slicde from the specified image onto the graphics area

   * 

   * @param g2 The graphics context to draw into

   * @param sliceX The x-cordinate of the slice

   * @param sliceY The y-cordinate of the slice

   * @param sliceWidth The width of the slice

   * @param sliceHeight The height of the slice

   * @param destX The target location of the drawn slice

   * @param destY The target location of the drawn slice

   */

  private void drawSlice(Graphics2D g2,int sliceX, int sliceY, int sliceWidth, int sliceHeight, int destX, int destY){

      g2.drawImage(borderImage,destX,destY,destX+sliceWidth,destY+sliceHeight,

              sliceX,sliceY,sliceX+sliceWidth,sliceY+sliceHeight,null);

  }    

    

}