Rendered Image : Image « 2D Graphics GUI « Java

1. Java
2. 2D Graphics GUI
3. Image

Rendered Image

      

//-----------------------------------------------------------------------//
//                                                                       //
//                           T e s t I m a g e 2                         //
//                                                                       //
//  Copyright (C) Herve Bitteur 2000-2007. All rights reserved.          //
//  This software is released under the terms of the GNU General Public  //
//  License. Please contact the author at herve.bitteur@laposte.net      //
//  to report bugs & suggestions.                                        //
//-----------------------------------------------------------------------//


import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import java.awt.image.DataBuffer;
import java.awt.image.DataBufferByte;
import java.awt.image.Raster;
import java.awt.image.RenderedImage;
import java.awt.image.WritableRaster;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class TestImage2
    extends JPanel
{
    //RenderedImage image;
    RenderedImage image;

    // Affine tranform
    final float ratio = 1f;
    AffineTransform scaleXform = AffineTransform.getScaleInstance(ratio, ratio);

    private static char WHITE = '-';    // And transparent
    private static char[] charTable = new char[]
    {
        '#',  // 0 Black
        '$',  // 1
        '*',  // 2
        '0',  // 3
        'o',  // 4
        '+',  // 5
        '.',  // 6
        WHITE // 7
    };

    //------------//
    // TestImage2 //
    //------------//
    public TestImage2()
    {
        JFrame frame = new JFrame(getClass().getName());
        Container pane = frame.getContentPane();
        pane.setLayout(new BorderLayout());

        pane.add(this);

        image = toRenderedImage(new String[] {
                "-##########################################################################-",
                "----------------------------------------------------------------------------",
                "-##########################################################################-",
                "----------------------------------------------------------------------------",
                "-##########################################################################-",
                "----------------------------------------------------------------------------",
                "-##########################################################################-",
                "----------------------------------------------------------------------------",
                "-##########################################################################-",
                "----------------------------------------------------------------------------",
                "-##########################################################################-",
                "----------------------------------------------------------------------------",
                "----------------------------------------------------------------------------",
                "----------------------------------------------------------------------------",
                "----####---------------####---------------####---------------####-----------",
                "--------##-----------------##-----------------##-----------------##---------",
                "----------####---------------####---------------####---------------####-----",
                "--------------#------------------#------------------#------------------#----",
                "--------------#------------------#------------------#------------------#----",
                "----------------------------------------------------------------------------",
                "---#############------#############------#############------#############---",
                "---#############------#############------#############------#############---",
                "---#############------#############------#############------#############---",
                "---#############------#############------#############------#############---",
                "---#############------#############------#############------#############---",
                "---#############------#############------#############------#############---",
                "---#############------#############------#############------#############---",
                "---#############------#############------#############------#############---",
                "---#############------#############------#############------#############---",
                "---#############------#############------#############------#############---",
                "---#############------#############------#############------#############---",
                "----------------------------------------------------------------------------",
                "----------------------------------------------------------------------------",
                "----####---------------####---------------####---------------####-----------",
                "--------##-----------------##-----------------##-----------------##---------",
                "----------####---------------####---------------####---------------####-----",
                "--------------#------------------#------------------#------------------#----",
                "--------------#------------------#------------------#------------------#----",
                "----------------------------------------------------------------------------",
                "---#############------#############------#############------#############---",
                "---#############------#############------#############------#############---",
                "----------------------------------------------------------------------------",
                "----------------------------------------------------------------------------"
        });

        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setLocation(100, 100);
        frame.pack();
        frame.setSize(200, 200);
        frame.setVisible(true);
    }

    //------//
    // main //
    //------//
    public static void main(String... args)
    {
        new TestImage2();
    }

    //----------------//
    // paintComponent //
    //----------------//
    public void paintComponent(Graphics g)
    {
        // For background
        super.paintComponent(g);

        // Meant for visual check
        if (image != null) {

            Graphics2D g2 = (Graphics2D) g;

            g2.drawRenderedImage (image, scaleXform);
            //g2.drawImage (image, 1, 1, this);
        }
    }

    //-----------------//
    // toRenderedImage //
    //-----------------//
    public static RenderedImage toRenderedImage (String[] rows)
    {
        // Create the DataBuffer to hold the pixel samples
        final int width = rows[0].length();
        final int height = rows.length;
        final int size = width * height;
        byte[] pixels = new byte[size];
        int index = 0;
        for (String row : rows) {
            for (int x = 0; x < width; x++) {
                pixels[index++] = (byte) decodeGray(row.charAt(x));
            }
        }
        DataBuffer dataBuffer = new DataBufferByte(pixels, size);

        // Create Raster
        WritableRaster writableRaster = Raster.createBandedRaster
            (dataBuffer, width, height,
             width,                      // scanlineStride
             new int[] {0},             // bankIndices,
             new int[] {0},             // bandOffsets,
             null);                     // location

        // Create the image
        BufferedImage bufferedImage = new BufferedImage
                (width, height, BufferedImage.TYPE_BYTE_GRAY);
        bufferedImage.setData(writableRaster);

        return bufferedImage;
    }

    //------------//
    // decodeGray //
    //------------//
    private static int decodeGray(char c)
    {
        // Check the char
        if (c == WHITE) {
            return  255;
        } else {
            for (int i = charTable.length -1; i >= 0; i--) {
                if (charTable[i] == c) {
                    int level = 2 + i * 36; // Range 2 .. 254 (not too bad)
                    return level;
                }
            }
        }

        // Unknown -> white
        return 255;
    }
}

   
    
    
    
    
    
  

Related examples in the same category

1.	Image size
2.	Image demo
3.	Getting the Color Model of an Image
4.	Filtering the RGB Values in an Image
5.	Create a filter that can modify any of the RGB pixel values in an image.
6.	This filter removes all but the red values in an image
7.	Load and draw image
8.	Paint an Icon
9.	Image Processing: Brightness and Contrast
10.	Image with mouse drag and move event
11.	Image Animation and Thread
12.	Image Color Gray Effect
13.	Image Buffering
14.	Image Effect: Combine
15.	AffineTransform demo
16.	Image Effect: Rotate Image using DataBuffer
17.	Image Effect: Sharpen, blur
18.	Image scale
19.	Image crop
20.	Demonstrating the Drawing of an Image with a Convolve Operation
21.	Demonstrating Use of the Image I/O Library
22.	Adding Image-Dragging Behavior
23.	Sending Image Objects through the Clipboard
24.	Anti Alias
25.	Image Operations
26.	Image Viewer
27.	Get the dimensions of the image; these will be non-negative
28.	Standalone Image Viewer - works with any AWT-supported format
29.	Toolkit.getImage() which works the same in either Applet or Application
30.	Double Buffered Image
31.	Graband Fade: displays image and fades to black
32.	Graband Fade with Rasters
33.	Rotate Image 45 Degrees
34.	Convert java.awt.image.BufferedImage to java.awt.Image
35.	Filter image by multiplier its red, green and blue color
36.	Drags within the image
37.	TYPE_INT_RGB and TYPE_INT_ARGB are typically used
38.	Pixels from a buffered image can be modified
39.	Calculation of the mean value of an image with Raster
40.	Use PixelGrabber class to acquire pixel data from an Image object
41.	Flip an image
42.	Image Panel
43.	Image Utils
44.	Returns an image resource.
45.	Create Gradient Image
46.	Create Gradient Mask
47.	Create Translucent Image
48.	Make Raster Writable
49.	A frame that displays an image
50.	Optimized version of copyData designed to work on Integer packed data with a SinglePixelPackedSampleModel
51.	Various image processing operations.
52.	This program demonstrates the transfer of images between a Java application and the system clipboard.
53.	Scales down an image into a box of maxSideLenght x maxSideLength.
54.	Adding watermark to an image
55.	Scale Image
56.	Crop Image
57.	Fit Image
58.	Converts a java.awt.Image into an array of pixels
59.	Creates a scaled copy of the source image.
60.	Provides useful methods for converting images from one colour depth to another.
61.	Reads an image in a file and creates a thumbnail in another file.
62.	Make image Transparency
63.	Clips the input image to the specified shape
64.	Image Sorter frame
65.	Returns an ImageIcon, or null if the path was invalid.
66.	Create new image from source image
67.	check if image supported
68.	Get supported image format
69.	get image thumbnail
70.	get image orientation type
71.	get fixing preview image