/*
* @(#)CachedImageBevelBorder.java
*
* Copyright (c) 2005-2010 Werner Randelshofer, Immensee, Switzerland.
* All rights reserved.
*
* You may not use, copy or modify this file, except in compliance with the
* license agreement you entered into with Werner Randelshofer.
* For details see accompanying license terms.
*/
package ch.randelshofer.quaqua.border;
import ch.randelshofer.quaqua.util.*;
import java.awt.*;
import javax.swing.border.*;
import java.awt.image.*;
/**
* Draws a filled bevel border using an image and insets.
* The image must consist of a bevel and a fill area.
* Volatile images of the border are cached to speed up drawing.
* <p>
* The insets and the size of the image are
* used do determine which parts of the image shall be
* used to draw the corners and edges of the bevel as
* well the fill area.
*
* <p>For example, if you provide an image of size 10,10
* and a insets of size 2, 2, 4, 4, then the corners of
* the border are made up of top left: 2,2, top right: 2,4,
* bottom left: 2,4, bottom right: 4,4 rectangle of the image.
* The inner area of the image is used to fill the inner area.
*
* @author Werner Randelshofer
* @version $Id: CachedImageBevelBorder.java 414 2011-07-29 20:55:05Z wrandelshofer $
*/
public class CachedImageBevelBorder extends CachedPainter implements Border {
private final static boolean VERBOSE = false;
/**
* The image to be used for drawing.
*/
private Image image;
/**
* The border insets
*/
private Insets borderInsets;
/**
* The insets of the image.
*/
private Insets imageInsets;
/**
* This attribute is set to true, when the image
* is used to fill the content area too.
*/
private boolean fillContentArea;
/**
* We don't need arguments. We use this instance.
*/
private Object args = this;
/**
* Creates a new instance with the given image and insets.
* The image has the same insets as the border.
*/
public CachedImageBevelBorder(Image img, Insets borderInsets) {
this(img, borderInsets, borderInsets, true);
}
/**
* Creates a new instance with the given image and insets.
* The image has different insets than the border.
*/
public CachedImageBevelBorder(Image img, Insets imageInsets, Insets borderInsets) {
this(img, imageInsets, borderInsets, true);
}
/**
* Creates a new instance with the given image and insets.
* The image has different insets than the border.
*/
public CachedImageBevelBorder(Image img, Insets imageInsets, Insets borderInsets, boolean fillContentArea) {
super(32);
this.image = img;
this.imageInsets = imageInsets;
this.borderInsets = borderInsets;
this.fillContentArea = fillContentArea;
}
/**
* Returns true if the border is opaque.
* This implementation always returns false.
*/
public boolean isBorderOpaque() {
return false;
}
/**
* Returns the insets of the border.
* @param c the component for which this border insets value applies
*/
public Insets getBorderInsets(Component c) {
return (Insets) borderInsets.clone();
}
/**
* Paints the bevel image for the specified component with the
* specified position and size.
* @param c the component for which this border is being painted
* @param gr the paint graphics
* @param x the x position of the painted border
* @param y the y position of the painted border
* @param width the width of the painted border
* @param height the height of the painted border
*/
public void paintBorder(Component c, Graphics gr, int x, int y, int width, int height) {
if (image == null) return;
if (gr.getClipBounds()!=null&&! gr.getClipBounds().intersects(x, y, width, height)) {
return;
}
paint(c, gr, x, y, width, height, args);
}
/**
* Creates the image to cache. This returns a translucent image.
*
* @param c Component painting to
* @param w Width of image to create
* @param h Height to image to create
* @param config GraphicsConfiguration that will be
* rendered to, this may be null.
*/
@Override
protected Image createImage(Component c, int w, int h,
GraphicsConfiguration config) {
if (config == null) {
return new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB_PRE);
}
return config.createCompatibleImage(w, h, Transparency.TRANSLUCENT);
}
protected void paintToImage(Component c, Graphics gr, int width, int height, Object args) {
// Cast Graphics to Graphics2D
// Workaround for Java 1.4 and 1.4 on Mac OS X 10.4. We create a new
// Graphics object instead of just casting the provided one. This is
// because drawing texture paints appears to confuse the Graphics object.
Graphics2D g = (Graphics2D) gr.create();
// Convert image to buffered image (and keep the buffered image).
image = Images.toBufferedImage(image);
BufferedImage img = (BufferedImage) image;
// Set some variables for easy access of insets and image size
int top = imageInsets.top;
int left = imageInsets.left;
int bottom = imageInsets.bottom;
int right = imageInsets.right;
int imgWidth = img.getWidth();
int imgHeight = img.getHeight();
// Optimisation: Draw image directly if it fits into the component
if (fillContentArea) {
if (width == imgWidth && height == imgHeight) {
g.drawImage(img, 0, 0, c);
g.dispose();
return;
}
}
// Optimisation: Remove insets, if image width or image height fits
if (width == imgWidth) {
left = imgWidth;
right = 0;
}
if (height == imgHeight) {
top = imgHeight;
bottom = 0;
}
// Adjust insets if component is too small
if (width < left + right) {
left = Math.min(left, width / 2); //Math.max(0, left + (width - left - right) / 2);
right = width - left;
}
if (height < top + bottom) {
top = Math.min(top, height / 2); //Math.max(0, top + (height - top - bottom) / 2);
bottom = height - top;
}
// Draw the Corners
if (top > 0 && left > 0) {
g.drawImage(
img,
0, 0, left, top,
0, 0, left, top,
c
);
}
if (top > 0 && right > 0) {
//g.fillRect(x+width-right, y, x+width, y+top);
g.drawImage(
img,
width - right, 0, width, top,
imgWidth - right, 0, imgWidth, top,
c
);
}
if (bottom > 0 && left > 0) {
g.drawImage(
img,
0, height - bottom, left, height,
0, imgHeight - bottom, left, imgHeight,
c
);
}
if (bottom > 0 && right > 0) {
g.drawImage(
img,
width - right, height - bottom, width, height,
imgWidth - right, imgHeight - bottom, imgWidth, imgHeight,
c
);
}
// Draw the edges
BufferedImage subImg = null;
TexturePaint paint;
// North
if (top > 0 && left + right < width) {
if (imgWidth > right + left) {
subImg = img.getSubimage(left, 0, imgWidth - right - left, top);
paint = new TexturePaint(subImg, new Rectangle(left, 0, imgWidth - left - right, top));
g.setPaint(paint);
g.fillRect(left, 0, width - left - right, top);
}
}
// South
if (bottom > 0 && left + right < width) {
if (imgHeight > bottom && imgWidth > right + left) {
subImg = img.getSubimage(left, imgHeight - bottom, imgWidth - right - left, bottom);
paint = new TexturePaint(subImg, new Rectangle(left, height - bottom, imgWidth - left - right, bottom));
g.setPaint(paint);
g.fillRect(left, height - bottom, width - left - right, bottom);
}
}
// West
if (left > 0 && top + bottom < height) {
if (imgHeight > top + bottom) {
subImg = img.getSubimage(0, top, left, imgHeight - top - bottom);
paint = new TexturePaint(subImg, new Rectangle(0, top, left, imgHeight - top - bottom));
g.setPaint(paint);
g.fillRect(0, top, left, height - top - bottom);
}
}
// East
if (right > 0 && top + bottom < height) {
if (imgWidth > right && imgHeight > top + bottom) {
subImg = img.getSubimage(imgWidth - right, top, right, imgHeight - top - bottom);
paint = new TexturePaint(subImg, new Rectangle(width - right, top, right, imgHeight - top - bottom));
g.setPaint(paint);
g.fillRect(width - right, top, right, height - top - bottom);
}
}
// Fill the center
if (fillContentArea) {
if (left + right < imgWidth && top + bottom < imgHeight) {
subImg = img.getSubimage(left, top, imgWidth - right - left, imgHeight - top - bottom);
paint = new TexturePaint(subImg, new Rectangle(left, top, imgWidth - right - left, imgHeight - top - bottom));
g.setPaint(paint);
g.fillRect(left, top, width - right - left, height - top - bottom);
}
}
g.dispose();
}
public static class UIResource extends CachedImageBevelBorder implements javax.swing.plaf.UIResource {
public UIResource(Image img, Insets borderInsets) {
super(img, borderInsets);
}
/**
* Creates a new instance with the given image and insets.
* The image has different insets than the border.
*/
public UIResource(Image img, Insets imageInsets, Insets borderInsets) {
super(img, imageInsets, borderInsets);
}
/**
* Creates a new instance with the given image and insets.
* The image has different insets than the border.
*/
public UIResource(Image img, Insets imageInsets, Insets borderInsets, boolean fillContentArea) {
super(img, imageInsets, borderInsets, fillContentArea);
}
}}