org.jdesktop.swingx.plaf.nimbus
Class NimbusGraphicsUtils

java.lang.Object
  javax.swing.plaf.synth.SynthGraphicsUtils
      org.jdesktop.swingx.plaf.nimbus.NimbusGraphicsUtils

public class NimbusGraphicsUtils
extends javax.swing.plaf.synth.SynthGraphicsUtils

NimbusGraphicsUtils - extends SynthGraphicsUtils to force all Synth painted text to be antialiased and provides some static helper methods.

Author:

Created by Jasper Potts (Jan 4, 2007)

Constructor Summary

NimbusGraphicsUtils()

Method Summary

static java.awt.image.BufferedImage	createColorMaskImage(java.awt.image.BufferedImage alpha, java.awt.Color c) Creates and returns a new color image filled with color c and with alpha channel alpha.
static java.awt.image.BufferedImage	createCompatibleTranslucentImage(int width, int height) Returns a new translucent compatible image of the specified width and height.
static java.awt.image.BufferedImage	getAlphaMask(java.awt.image.BufferedImage srcImg, int dstWidth, int dstHeight) Extract the alpha channel from a image as a greyscale image
static java.awt.Color	getMidWebColor(java.lang.String c1, java.lang.String c2) Get a Color that is 50% inbetween the two web colors given.
static java.awt.RenderingHints	getRenderingHints(java.awt.Graphics2D g2d, java.util.Map<?,?> hintsToSave, java.awt.RenderingHints savedHints) Get rendering hints from a Graphics instance.
static java.awt.image.Kernel[]	getSeparateGaussianKernel(int radius) Generate a pair of 1D Gaussian kernels
static java.awt.Color	getWebColor(java.lang.String c) Get a Color object from a web color string of the form "FF00AB" or "#FF00AB".
static java.awt.image.BufferedImage	loadImage(java.lang.String imgName) Load an image using ImageIO from resource in org.jdesktop.swingx.plaf.nimbus.images.
void	paintText(javax.swing.plaf.synth.SynthContext ss, java.awt.Graphics g, java.lang.String text, int x, int y, int mnemonicIndex) Overrides paintText in SynthGraphicsUtils to force all Synth painted text to be antialiased

Methods inherited from class javax.swing.plaf.synth.SynthGraphicsUtils

computeStringWidth, drawLine, drawLine, getMaximumCharHeight, getMaximumSize, getMinimumSize, getPreferredSize, layoutText, paintText, paintText

Methods inherited from class java.lang.Object

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

Constructor Detail

NimbusGraphicsUtils

public NimbusGraphicsUtils()

Method Detail

getRenderingHints

public static java.awt.RenderingHints getRenderingHints(java.awt.Graphics2D g2d,
                                                        java.util.Map<?,?> hintsToSave,
                                                        java.awt.RenderingHints savedHints)

Get rendering hints from a Graphics instance. "hintsToSave" is a Map of RenderingHint key-values. For each hint key present in that map, the value of that hint is obtained from the Graphics and stored as the value for the key in savedHints.

Parameters:

g2d - the graphics surface

hintsToSave - the list of rendering hints to set on the graphics

savedHints - a set where to save the previous rendering hints, might be null

Returns:

the previous set of rendering hints

paintText

public void paintText(javax.swing.plaf.synth.SynthContext ss,
                      java.awt.Graphics g,
                      java.lang.String text,
                      int x,
                      int y,
                      int mnemonicIndex)

Overrides paintText in SynthGraphicsUtils to force all Synth painted text to be antialiased

Overrides:

paintText in class javax.swing.plaf.synth.SynthGraphicsUtils

loadImage

public static java.awt.image.BufferedImage loadImage(java.lang.String imgName)

Load an image using ImageIO from resource in org.jdesktop.swingx.plaf.nimbus.images. Catches and prints all Exceptions so that it can safely be used in a static context.

Parameters:

imgName - The name of the image to load, eg. "border.png"

Returns:

The loaded image

getWebColor

public static java.awt.Color getWebColor(java.lang.String c)

Get a Color object from a web color string of the form "FF00AB" or "#FF00AB".

Parameters:

c - The color string

Returns:

The Color described

getMidWebColor

public static java.awt.Color getMidWebColor(java.lang.String c1,
                                            java.lang.String c2)

Get a Color that is 50% inbetween the two web colors given. The Web colors are of the form "FF00AB" or "#FF00AB".

Parameters:

c1 - The first color string

c2 - The second color string

Returns:

The Color middle color

createCompatibleTranslucentImage

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

Returns a new translucent compatible image of the specified width and height.

Parameters:

width - the width of the new image

height - the height of the new image

Returns:

a new translucent compatible BufferedImage of the specified width and height

getAlphaMask

public static java.awt.image.BufferedImage getAlphaMask(java.awt.image.BufferedImage srcImg,
                                                        int dstWidth,
                                                        int dstHeight)

Extract the alpha channel from a image as a greyscale image

Parameters:

srcImg - the source image

dstWidth - The width of the destintaion, allows padding to be added to alpha

dstHeight - The height of the destintaion, allows padding to be added to alpha

Returns:

new greyscale image with the alpha channel from srcImg in the center

createColorMaskImage

public static java.awt.image.BufferedImage createColorMaskImage(java.awt.image.BufferedImage alpha,
                                                                java.awt.Color c)

Creates and returns a new color image filled with color c and with alpha channel alpha.

Parameters:

alpha - The alpha channel for the new image

c - The fill color

Returns:

New image filled with c and with alpha channel alpha

getSeparateGaussianKernel

public static java.awt.image.Kernel[] getSeparateGaussianKernel(int radius)

Generate a pair of 1D Gaussian kernels

Parameters:

radius - the blur radius

Returns:

array containg horizontal and vertical kernels