com.fr.chart.base

类 ShadowLighteHelper

java.lang.Object

com.fr.chart.base.ShadowLighteHelper

public class ShadowLighteHelper
extends java.lang.Object

图表阴影和发光时的辅助类, 来自网上.

版本:

创建时间：2012-1-1 下午10:52:02

作者:

kunsnat E-mail:kunsnat@gmail.com

方法概要

方法

限定符和类型	方法和说明
static java.awt.image.BufferedImage	createCompatibleImage(int width, int height) 生成宽度width高度height的BufferedImage
static int[]	getPixels(java.awt.image.BufferedImage img, int x, int y, int w, int h, int[] pixels) Returns an array of pixels, stored as integers, from a BufferedImage.
static void	setPixels(java.awt.image.BufferedImage img, int x, int y, int w, int h, int[] pixels) Writes a rectangular area of pixels in the destination BufferedImage.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

方法详细资料

createCompatibleImage

public static java.awt.image.BufferedImage createCompatibleImage(int width,
                                                 int height)

生成宽度width高度height的BufferedImage

getPixels

public static int[] getPixels(java.awt.image.BufferedImage img,
              int x,
              int y,
              int w,
              int h,
              int[] pixels)

Returns an array of pixels, stored as integers, from a BufferedImage. The pixels are grabbed from a rectangular area defined by a location and two dimensions. Calling this method on an image of type different from BufferedImage.TYPE_INT_ARGB and BufferedImage.TYPE_INT_RGB will unmanage the image.

参数:

img - the source image

x - the x location at which to start grabbing pixels

y - the y location at which to start grabbing pixels

w - the width of the rectangle of pixels to grab

h - the height of the rectangle of pixels to grab

pixels - a pre-allocated array of pixels of size w*h; can be null

返回:

pixels if non-null, a new array of integers otherwise

抛出:

java.lang.IllegalArgumentException - is pixels is non-null and of length < w*h

setPixels

public static void setPixels(java.awt.image.BufferedImage img,
             int x,
             int y,
             int w,
             int h,
             int[] pixels)

Writes a rectangular area of pixels in the destination BufferedImage. Calling this method on an image of type different from BufferedImage.TYPE_INT_ARGB and BufferedImage.TYPE_INT_RGB will unmanage the image.

参数:

img - the destination image

x - the x location at which to start storing pixels

y - the y location at which to start storing pixels

w - the width of the rectangle of pixels to store

h - the height of the rectangle of pixels to store

pixels - an array of pixels, stored as integers

抛出:

java.lang.IllegalArgumentException - is pixels is non-null and of length < w*h