Class HistVisionApplet

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.Container
              |
              +--java.awt.Panel
                    |
                    +--java.applet.Applet
                          |
                          +--javax.swing.JApplet
                                |
                                +--HistVisionApplet
Direct Known Subclasses:
SThresholdScreen
public class HistVisionApplet
extends javax.swing.JApplet

HistVisionApplet is a subclass of the JApplet class which is tailored for use in the HIPR application. It is used with operators which only require the use of one input image, but which have two outputs to display one of which is a histogram.

Author:
Timothy Sharman
See Also:
Serialized Form

Inner Class Summary
 class HistVisionApplet.PixelListener
          Handles the actions performed when the mouse is used in the interface to find information about image pixels.
 
Inner classes inherited from class javax.swing.JApplet
javax.swing.JApplet.AccessibleJApplet
 
Field Summary
 javax.swing.JPanel bl
          The bottom left panel
 javax.swing.JPanel bm
          The bottom middle panel
 java.awt.GridBagConstraints bmc
          The bottom middle panel constraints
 java.awt.GridBagLayout bmlayout
          The bottom middle panel layout
 javax.swing.JPanel br
          The bottom right panel
 java.awt.GridBagConstraints brc
          The bottom right panel constraints
 java.awt.GridBagLayout brlayout
          The bottom right panel layout
 java.awt.Container container
          The main container of the applet
 int d_h
          The destination image height
 int d_w
          The destination image width
 java.awt.Image dest
          The destination image
 int[] dest_1d
          The destination image array
 ImageCanvas dest_canvas
          The destination image canvas
 java.awt.Image hist
          The histogram image
 int[] hist_1d
          The histogram image array
 HistogramImageCanvas hist_canvas
          The histogram image canvas
 Histogram histogramalgorithm
          Operator required to produce the histogram
 int i_h
          The input image height
 int i_w
          The input image width
 javax.swing.JLabel insize
          The input image size label
 javax.swing.JButton load_image
          The load button
 javax.swing.JPanel mid
          The middle panel
 java.awt.GridBagConstraints midc
          The mid panel constraints
 java.awt.GridBagLayout midlayout
          The mid panel layout
 javax.swing.JLabel output
          The output image label
 javax.swing.JLabel outsize
          The output image size label
 java.awt.Image src
          The source image
 int[] src_1d
          The source image array
 ImageCanvas src_canvas
          The source image canvas
 java.net.URL theURL
          The address from which to load pictures
 long time_msec
          The execution time
 
Fields inherited from class javax.swing.JApplet
accessibleContext, rootPane, rootPaneCheckingEnabled
 
Fields inherited from class java.awt.Component
BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT
 
Constructor Summary
HistVisionApplet()
           
 
Method Summary
 void add_extra()
          add_extra is used to add extra components to the window of the operator.
 void apply_send_image()
          apply_send_image grabs the image from the URL and turns it into an array of pixels which the operators can manipulate
 java.lang.String getAppletInfo()
          Used by the browser to find out what the applet is for
 void init()
          Called automatically when the applet is started.
 void set_image()
          Sets up the default image
 void set_interface()
          set_interface sets up the 'standard' interface that is the same regardless of which operator is being run
 void set_src_image(int[] input_img, int w, int h, java.lang.String name)
          set_src_image tells the applet of the image to be loaded and displayed on the screen.
 void set_src_image2(int[] input_img, int w, int h, java.lang.String name)
          set_src_image2 is used to add a newly loaded image to the interface It is called by set_src_image once the operator thread has been recreated.
 
Methods inherited from class javax.swing.JApplet
addImpl, createRootPane, getAccessibleContext, getContentPane, getGlassPane, getJMenuBar, getLayeredPane, getRootPane, isRootPaneCheckingEnabled, paramString, processKeyEvent, setContentPane, setGlassPane, setJMenuBar, setLayeredPane, setLayout, setRootPane, setRootPaneCheckingEnabled, update
 
Methods inherited from class java.applet.Applet
destroy, getAppletContext, getAudioClip, getAudioClip, getCodeBase, getDocumentBase, getImage, getImage, getLocale, getParameter, getParameterInfo, isActive, newAudioClip, play, play, resize, resize, setStub, showStatus, start, stop
 
Methods inherited from class java.awt.Panel
addNotify
 
Methods inherited from class java.awt.Container
add, add, add, add, add, addContainerListener, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getAlignmentX, getAlignmentY, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getInsets, getLayout, getMaximumSize, getMinimumSize, getPreferredSize, insets, invalidate, isAncestorOf, layout, list, list, locate, minimumSize, paint, paintComponents, preferredSize, print, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, removeNotify, setFont, validate, validateTree
 
Methods inherited from class java.awt.Component
action, add, addComponentListener, addFocusListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addPropertyChangeListener, addPropertyChangeListener, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, disable, disableEvents, dispatchEvent, enable, enable, enableEvents, enableInputMethods, firePropertyChange, getBackground, getBounds, getBounds, getColorModel, getComponentOrientation, getCursor, getDropTarget, getFont, getFontMetrics, getForeground, getGraphics, getHeight, getInputContext, getInputMethodRequests, getLocation, getLocation, getLocationOnScreen, getName, getParent, getPeer, getSize, getSize, getToolkit, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isDisplayable, isDoubleBuffered, isEnabled, isFocusTraversable, isLightweight, isOpaque, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, printAll, processComponentEvent, processFocusEvent, processInputMethodEvent, processMouseEvent, processMouseMotionEvent, remove, removeComponentListener, removeFocusListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, reshape, setBackground, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setEnabled, setForeground, setLocale, setLocation, setLocation, setName, setSize, setSize, setVisible, show, show, size, toString, transferFocus
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Field Detail

container

public java.awt.Container container
The main container of the applet

src

public java.awt.Image src
The source image

dest

public java.awt.Image dest
The destination image

hist

public java.awt.Image hist
The histogram image

src_canvas

public ImageCanvas src_canvas
The source image canvas

dest_canvas

public ImageCanvas dest_canvas
The destination image canvas

hist_canvas

public HistogramImageCanvas hist_canvas
The histogram image canvas

src_1d

public int[] src_1d
The source image array

dest_1d

public int[] dest_1d
The destination image array

hist_1d

public int[] hist_1d
The histogram image array

i_w

public int i_w
The input image width

i_h

public int i_h
The input image height

d_w

public int d_w
The destination image width

d_h

public int d_h
The destination image height

histogramalgorithm

public Histogram histogramalgorithm
Operator required to produce the histogram

time_msec

public long time_msec
The execution time

midlayout

public java.awt.GridBagLayout midlayout
The mid panel layout

brlayout

public java.awt.GridBagLayout brlayout
The bottom right panel layout

bmlayout

public java.awt.GridBagLayout bmlayout
The bottom middle panel layout

midc

public java.awt.GridBagConstraints midc
The mid panel constraints

brc

public java.awt.GridBagConstraints brc
The bottom right panel constraints

bmc

public java.awt.GridBagConstraints bmc
The bottom middle panel constraints

mid

public javax.swing.JPanel mid
The middle panel

br

public javax.swing.JPanel br
The bottom right panel

bl

public javax.swing.JPanel bl
The bottom left panel

bm

public javax.swing.JPanel bm
The bottom middle panel

load_image

public javax.swing.JButton load_image
The load button

output

public javax.swing.JLabel output
The output image label

insize

public javax.swing.JLabel insize
The input image size label

outsize

public javax.swing.JLabel outsize
The output image size label

theURL

public java.net.URL theURL
The address from which to load pictures
Constructor Detail

HistVisionApplet

public HistVisionApplet()
Method Detail

init

public void init()
Called automatically when the applet is started. Initialises the interface components ready for drawing on screen.
Overrides:
init in class java.applet.Applet

set_image

public void set_image()
Sets up the default image

set_interface

public void set_interface()
set_interface sets up the 'standard' interface that is the same regardless of which operator is being run

add_extra

public void add_extra()
add_extra is used to add extra components to the window of the operator. This is done by adding extra components into the blank mid panel. This panel is then added to the generic panels to make up the interface. The default is for this panel to be blank.

set_src_image2

public void set_src_image2(int[] input_img,
                           int w,
                           int h,
                           java.lang.String name)
set_src_image2 is used to add a newly loaded image to the interface It is called by set_src_image once the operator thread has been recreated.
Parameters:
input_img - The new input image array
w - The width of the image
h - The height of the image
name - The name of the image

set_src_image

public void set_src_image(int[] input_img,
                          int w,
                          int h,
                          java.lang.String name)
set_src_image tells the applet of the image to be loaded and displayed on the screen. It also is required to recreate the operator which was running at the time. The method should be implemented by the subclass as this default doesn't do this.
Parameters:
input_img - The new input image array
w - The width of the image
h - The height of the image
name - The name of the image

apply_send_image

public void apply_send_image()
apply_send_image grabs the image from the URL and turns it into an array of pixels which the operators can manipulate

getAppletInfo

public java.lang.String getAppletInfo()
Used by the browser to find out what the applet is for
Returns:
the function of the applet
Overrides:
getAppletInfo in class java.applet.Applet