Re: grayscale to a JPanel does not work
On Feb 9, 10:50 pm, "John B. Matthews" <nos...@nospam.invalid> wrote:
In article
<e11dadc9-4a6a-4b16-9845-c99c223cd...@h19g2000prh.googlegroups.com>,
SamuelXiao <foolsmart2...@gmail.com> wrote:
[...]
I currently paint line chart/bar chart to there (the drawing area
painting line chart/bar chart).
[...]
In addition, I have tried the example in
<http://groups.google.com/group/comp.lang.java.programmer/msg/d4c436ab...=
but it does not work as well.
This is the very code I was going to suggest; it works correctly for
me. Are you having trouble converting your chart to a BufferedImage?
I don't know how you create your chart, but org.jfree.chart.JFreeChart
includes suitable methods.
Any help would be highly appreciated.
--
John B. Matthews
trashgod at gmail dot com
<http://sites.google.com/site/drjohnbmatthews>
Hi, the code converts an imaged to grayscale. but for my situation, I
need to converts Graphics in an applet (lines, rectangels, string) to
grayScale. The paint method in my Applet is like:
public void paint(Graphics g){
super.paint(g);
Graphics2D g2d = (Graphics2D) g;
g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_A=
NTIALIAS_ON);
//colorSchemeList.getSelectedIndex
switch(colorSchemeList.getSelectedIndex()){
case 0:
showGrayScale(g2d);
break;
case 1:
showHighContrast(g2d);
break;
}
}
But it does not work as the example. It just paint another rectangle
with gray color on top of those line/string/so on. Do you have any
idea for it? Thanks.