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Groups > comp.lang.java.programmer > #35010
| From | Knute Johnson <nospam@rabbitbrush.frazmtn.com> |
|---|---|
| Newsgroups | comp.lang.java.programmer |
| Subject | Re: What do you think of my CropImage class |
| Date | 2016-07-20 10:02 -0700 |
| Organization | A noiseless patient Spider |
| Message-ID | <nmoark$mqi$1@dont-email.me> (permalink) |
| References | <87twfk93vu.fsf@Equus.decebal.nl> |
On 7/20/2016 00:15, Cecil Westerhof wrote:
> I need to crop some images and decide to write a Java program for it.
> At the moment it is very rudimentary, I plan to add some
> functionalities and because I have very little experience with GUI
> comments on how to implement the GUI better are welcome.
>
>
> At the moment it is build with my camera's in mind and cropping for
> InstaGram, but when it is seen as useful I will make it more generic.
>
>
> I have a few problems, the most important are:
> - After loading the first or a new image the first click makes the
> image disappear and painted again. Subsequent clicks do not have
> this problem.
We'd need to see the code
> - The original photo can be rotated. How can I find this out and make
> the cropped image also rotated?
That's in the image meta data (I have no clue how to find it)
> - How can I add comment to an image?
You want to draw on the image or add meta data?
> - After saving the cropped image I want to display it also. What would
> be the best way to do this?
In another window maybe
> Some of the functionalities I want to add (other ideas are welcome):
> - Working with different sets of cropping.
> - Possibility to resize. (Select an area of 2.160x2.160 and crop it to
> 1.080x1.080).
> - Working with a database.
>
Here's a crop component that I wrote years ago, I don't think I ever
used it for anything but I can't remember.
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import java.io.*;
import java.net.*;
import javax.imageio.*;
import javax.swing.*;
public class CropComponent extends JPanel {
BufferedImage bi,subImage;
boolean mouseDown;
int startX,startY;
int endX,endY;
int x,y,w,h;
public CropComponent(BufferedImage bi) {
this.bi = bi;
setPreferredSize(new Dimension(bi.getWidth(),bi.getHeight()));
addMouseListener(new MouseAdapter() {
public void mousePressed(MouseEvent me) {
mouseDown = true;
startX = me.getX();
startY = me.getY();
}
public void mouseReleased(MouseEvent me) {
mouseDown = false;
subImage = CropComponent.this.bi.getSubimage(x,y,w+1,h+1);
Runnable r = new Runnable() {
public void run() {
try {
ImageIO.write(subImage,"JPEG",new
File("crop.jpg"));
} catch (IOException ioe) {
ioe.printStackTrace();
}
}
};
new Thread(r).start();
x = y = w = h = 0;
repaint();
}
});
addMouseMotionListener(new MouseMotionAdapter() {
public void mouseDragged(MouseEvent me) {
endX = Math.max(0,me.getX());
endX =
Math.min(endX,CropComponent.this.bi.getWidth()-1);
endY = Math.max(0,me.getY());
endY =
Math.min(endY,CropComponent.this.bi.getHeight()-1);
if (startX < endX && startY < endY) {
x = startX;
y = startY;
w = endX-startX;
h = endY-startY;
} else if (startX > endX && startY > endY) {
x = endX;
y = endY;
w = startX-endX;
h = startY-endY;
} else if (startX < endX && startY > endY) {
x = startX;
y = endY;
w = endX-startX;
h = startY-endY;
} else if (startX > endX && startY < endY) {
x = endX;
y = startY;
w = startX-endX;
h = endY-startY;
}
repaint();
}
});
}
public void paintComponent(Graphics g2D) {
Graphics2D g = (Graphics2D)g2D;
g.drawImage(bi,0,0,null);
if (mouseDown) {
g.setStroke(new BasicStroke(1.0f,BasicStroke.CAP_SQUARE,
BasicStroke.JOIN_ROUND,1.0f,new float[] {2.0f,3.0f},1.0f));
g.setColor(Color.WHITE);
g.drawRect(x,y,w,h);
}
}
public static void main(final String[] args) {
Runnable r = new Runnable() {
public void run() {
BufferedImage bi = null;
try {
try {
bi = ImageIO.read(new URL(args[0]));
} catch (MalformedURLException murle) {
bi = ImageIO.read(new File(args[0]));
}
JFrame f = new JFrame();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
CropComponent cc = new CropComponent(bi);
JScrollPane sp = new JScrollPane(cc);
f.add(sp,BorderLayout.CENTER);
f.pack();
f.setVisible(true);
} catch (IOException ioe) {
ioe.printStackTrace();
}
}
};
EventQueue.invokeLater(r);
}
}
--
Knute Johnson
--
Knute Johnson
Back to comp.lang.java.programmer | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
What do you think of my CropImage class Cecil Westerhof <Cecil@decebal.nl> - 2016-07-20 09:15 +0200
Re: What do you think of my CropImage class Cecil Westerhof <Cecil@decebal.nl> - 2016-07-20 11:12 +0200
Re: What do you think of my CropImage class Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2016-07-20 10:02 -0700
Re: What do you think of my CropImage class Cecil Westerhof <Cecil@decebal.nl> - 2016-07-20 21:14 +0200
Re: What do you think of my CropImage class Eric Douglas <e.d.programmer@gmail.com> - 2016-07-20 12:50 -0700
Re: What do you think of my CropImage class Cecil Westerhof <Cecil@decebal.nl> - 2016-07-21 12:11 +0200
Re: What do you think of my CropImage class Cecil Westerhof <Cecil@decebal.nl> - 2016-07-21 14:19 +0200
Re: What do you think of my CropImage class Qu0ll <qu0ll64@gmail.com> - 2016-07-21 05:53 +1000
Re: What do you think of my CropImage class Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2016-07-20 13:46 -0700
Re: What do you think of my CropImage class Eric Douglas <e.d.programmer@gmail.com> - 2016-07-20 13:59 -0700
Re: What do you think of my CropImage class Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2016-07-20 15:40 -0700
Re: What do you think of my CropImage class Cecil Westerhof <Cecil@decebal.nl> - 2016-07-21 12:27 +0200
Re: What do you think of my CropImage class Eric Douglas <e.d.programmer@gmail.com> - 2016-07-21 05:17 -0700
Re: What do you think of my CropImage class Cecil Westerhof <Cecil@decebal.nl> - 2016-07-21 17:43 +0200
Re: What do you think of my CropImage class Eric Douglas <e.d.programmer@gmail.com> - 2016-07-21 08:59 -0700
Re: What do you think of my CropImage class Cecil Westerhof <Cecil@decebal.nl> - 2016-07-21 19:10 +0200
Re: What do you think of my CropImage class Arne Vajhøj <arne@vajhoej.dk> - 2016-07-23 21:47 -0400
Re: What do you think of my CropImage class Eric Douglas <e.d.programmer@gmail.com> - 2016-07-25 04:51 -0700
Re: What do you think of my CropImage class Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2016-07-25 15:01 -0700
Re: What do you think of my CropImage class Arne Vajhøj <arne@vajhoej.dk> - 2016-07-25 21:06 -0400
Re: What do you think of my CropImage class Arne Vajhøj <arne@vajhoej.dk> - 2016-07-25 21:09 -0400
Re: What do you think of my CropImage class Nigel Wade <nmw@local.domain> - 2016-07-21 15:44 +0100
Re: What do you think of my CropImage class Cecil Westerhof <Cecil@decebal.nl> - 2016-07-21 17:46 +0200
Re: What do you think of my CropImage class Cecil Westerhof <Cecil@decebal.nl> - 2016-07-21 12:25 +0200
Re: What do you think of my CropImage class Cecil Westerhof <Cecil@decebal.nl> - 2016-07-21 14:16 +0200
Re: What do you think of my CropImage class Cecil Westerhof <Cecil@decebal.nl> - 2016-07-21 12:05 +0200
Re: What do you think of my CropImage class Cecil Westerhof <Cecil@decebal.nl> - 2016-07-21 13:23 +0200
Re: What do you think of my CropImage class Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2016-07-21 07:58 -0700
Re: What do you think of my CropImage class Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-07-21 11:13 -0400
Re: What do you think of my CropImage class Cecil Westerhof <Cecil@decebal.nl> - 2016-07-21 18:12 +0200
Re: What do you think of my CropImage class Cecil Westerhof <Cecil@decebal.nl> - 2016-07-21 17:49 +0200
Re: What do you think of my CropImage class Cecil Westerhof <Cecil@decebal.nl> - 2016-07-21 11:58 +0200
Re: What do you think of my CropImage class Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-07-21 09:35 -0400
Re: What do you think of my CropImage class Eric Douglas <e.d.programmer@gmail.com> - 2016-07-21 09:03 -0700
Re: What do you think of my CropImage class Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-07-21 12:39 -0400
Re: What do you think of my CropImage class Cecil Westerhof <Cecil@decebal.nl> - 2016-07-21 18:07 +0200
Re: What do you think of my CropImage class Nigel Wade <nmw@local.domain> - 2016-07-21 17:23 +0100
Re: What do you think of my CropImage class Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-07-21 12:56 -0400
Re: What do you think of my CropImage class Cecil Westerhof <Cecil@decebal.nl> - 2016-07-21 19:03 +0200
Re: What do you think of my CropImage class Eric Douglas <e.d.programmer@gmail.com> - 2016-07-21 10:25 -0700
Re: What do you think of my CropImage class Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-07-21 14:24 -0400
Re: What do you think of my CropImage class Eric Douglas <e.d.programmer@gmail.com> - 2016-07-21 11:54 -0700
Re: What do you think of my CropImage class Cecil Westerhof <Cecil@decebal.nl> - 2016-07-21 20:25 +0200
Re: What do you think of my CropImage class Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-07-21 15:37 -0400
Re: What do you think of my CropImage class Martin Gregorie <martin@address-in-sig.invalid> - 2016-07-21 21:30 +0000
Re: What do you think of my CropImage class Cecil Westerhof <Cecil@decebal.nl> - 2016-07-21 23:52 +0200
Re: What do you think of my CropImage class Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-07-21 20:35 -0400
Re: What do you think of my CropImage class Cecil Westerhof <Cecil@decebal.nl> - 2016-07-22 04:21 +0200
Re: What do you think of my CropImage class Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-07-21 22:44 -0400
Re: What do you think of my CropImage class Cecil Westerhof <Cecil@decebal.nl> - 2016-07-22 10:27 +0200
Re: What do you think of my CropImage class Martin Gregorie <martin@address-in-sig.invalid> - 2016-07-22 10:47 +0000
Re: What do you think of my CropImage class Eric Douglas <e.d.programmer@gmail.com> - 2016-07-22 05:16 -0700
Re: What do you think of my CropImage class Nigel Wade <nmw@local.domain> - 2016-07-22 15:10 +0100
Re: What do you think of my CropImage class Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2016-07-22 07:47 -0700
Re: What do you think of my CropImage class Eric Douglas <e.d.programmer@gmail.com> - 2016-07-22 10:21 -0700
Re: What do you think of my CropImage class Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2016-07-21 08:30 -0700
Re: What do you think of my CropImage class Cecil Westerhof <Cecil@decebal.nl> - 2016-07-21 18:19 +0200
Re: What do you think of my CropImage class Eric Douglas <e.d.programmer@gmail.com> - 2016-07-21 10:18 -0700
Re: What do you think of my CropImage class Cecil Westerhof <Cecil@decebal.nl> - 2016-07-21 20:12 +0200
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