hades.models.special
Class VT52Canvas

java.lang.Object
  java.awt.Component
      java.awt.Container
          javax.swing.JComponent
              javax.swing.JPanel
                  hades.models.special.VT52Canvas

All Implemented Interfaces:

javax.accessibility.Accessible, java.awt.image.ImageObserver, java.awt.MenuContainer, java.io.Serializable

public class VT52Canvas

extends javax.swing.JPanel

VT52Canvas - an AWT component that displays a "VT-52" type terminal window with cursor.

This class is used by both the serial and the parallel interface HADES terminal models: hades.models.special.VT52, and hades.models.special.Terminal.

Text font and color can be specified via the "Hades.VT52Canvas.FontName", "...FontSize", and "Hades.VT52canvas.Color" properties. Call "setCursor(x,y)" to move the cursor, "clear()" to clear the display, and "setChar(c)" to add a character.

Note: somehow, Swing really wants to use its own default font, requiring lots of g.setFont() calls...

See Also:

Serialized Form

Nested Class Summary

protected class

VT52Canvas.BlinkTimer

Nested classes inherited from class javax.swing.JPanel

javax.swing.JPanel.AccessibleJPanel

Nested classes inherited from class javax.swing.JComponent

javax.swing.JComponent.AccessibleJComponent

Nested classes inherited from class java.awt.Container

java.awt.Container.AccessibleAWTContainer

Nested classes inherited from class java.awt.Component

java.awt.Component.AccessibleAWTComponent, java.awt.Component.BltBufferStrategy, java.awt.Component.FlipBufferStrategy

Field Summary

protected boolean	auto_repaint_enable
protected int	char_height
protected int	char_width
protected int	cursor_old_x
protected int	cursor_old_y
protected boolean	cursor_on
protected int	cursor_x
protected int	cursor_y
static boolean	debug
protected java.lang.StringBuffer[]	displayBuffer
protected int	height
protected int	max_ascent
protected int	mode
static int	MODE_ESCAPE_MOVETO
static int	MODE_ESCAPE_MOVETO2
static int	MODE_ESCAPE_SINGLE
static int	MODE_NORMAL
protected int	moveto_x
protected int	moveto_y
static int	n_chars
static int	n_lines
protected int	t_repaint
protected java.awt.Color	textColor
protected java.awt.Font	textFont
protected int	width

Fields inherited from class javax.swing.JComponent

accessibleContext, listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW

Fields inherited from class java.awt.Container

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Fields inherited from interface java.awt.image.ImageObserver

ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

Constructor Summary

VT52Canvas()

Method Summary

void	addChar(char c) add one char to the VT52 emulation and interpret it.
void	addDummyListener()
void	addDummyMouseListener() since JDK 1.1.6, we won't receive the keyboard focus, unless we ask for it.
void	addNormalChar(char c)
void	clear()
void	clearRestOfDisplay()
void	clearRestOfLine()
int	clip(int value, int minValue, int maxValue)
boolean	getAutoRepaintEnable()
java.awt.Dimension	getMinimumSize()
java.awt.Dimension	getPreferredSize()
void	hideCursor(java.awt.Graphics g)
void	identifyTerminal()
protected void	initDisplayBuffer()
protected void	initFontAndColors()
boolean	isOpaque()
static void	main(java.lang.String[] argv) main(): simple selftest of the VT52Canvas
static void	message(java.lang.String s)
void	moveCursorDown()
void	moveCursorHome()
void	moveCursorLeft()
void	moveCursorRight()
void	moveCursorTo(int x, int y)
void	moveCursorUp()
void	moveCursorUpWithScrolling()
void	moveNewline()
static void	msg(java.lang.String s)
void	paint(java.awt.Graphics g)
void	paintCharAt(java.awt.Graphics g, int x, int y)
void	resetMode()
void	scrollUp()
void	setAutoRepaintDelay(int millis)
void	setAutoRepaintEnable(boolean b)
void	setCursor(int x, int y)
void	setFont(java.awt.Font f)
void	setTextFont(java.awt.Font f)
void	showCursor(java.awt.Graphics g)
void	startCursorBlinking()
void	updateFontMetrics()

Methods inherited from class javax.swing.JPanel

getAccessibleContext, getUI, getUIClassID, paramString, setUI, updateUI

Methods inherited from class javax.swing.JComponent

addAncestorListener, addNotify, addPropertyChangeListener, addPropertyChangeListener, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBorder, getBounds, getClientProperty, getComponentGraphics, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getGraphics, getHeight, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getNextFocusableComponent, getPropertyChangeListeners, getPropertyChangeListeners, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, isDoubleBuffered, isLightweightComponent, isManagingFocus, isMaximumSizeSet, isMinimumSizeSet, isOptimizedDrawingEnabled, isPaintingTile, isPreferredSizeSet, isRequestFocusEnabled, isValidateRoot, paintBorder, paintChildren, paintComponent, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removePropertyChangeListener, removePropertyChangeListener, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, setForeground, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, addImpl, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setFocusCycleRoot, setFocusTraversalKeys, setFocusTraversalPolicy, setLayout, transferFocusBackward, transferFocusDownCycle, validate, validateTree

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMouseWheelListeners, getName, getParent, getPeer, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, repaint, repaint, repaint, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusUpCycle

Methods inherited from class java.lang.Object

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

Field Detail

n_lines

public static final int n_lines

See Also:

Constant Field Values

n_chars

public static final int n_chars

See Also:

Constant Field Values

MODE_NORMAL

public static final int MODE_NORMAL

See Also:

Constant Field Values

MODE_ESCAPE_SINGLE

public static final int MODE_ESCAPE_SINGLE

See Also:

Constant Field Values

MODE_ESCAPE_MOVETO

public static final int MODE_ESCAPE_MOVETO

See Also:

Constant Field Values

MODE_ESCAPE_MOVETO2

public static final int MODE_ESCAPE_MOVETO2

See Also:

Constant Field Values

debug

public static boolean debug

cursor_x

protected int cursor_x

cursor_y

protected int cursor_y

cursor_old_x

protected int cursor_old_x

cursor_old_y

protected int cursor_old_y

cursor_on

protected boolean cursor_on

char_width

protected int char_width

char_height

protected int char_height

max_ascent

protected int max_ascent

width

protected int width

height

protected int height

textFont

protected java.awt.Font textFont

textColor

protected java.awt.Color textColor

t_repaint

protected int t_repaint

auto_repaint_enable

protected boolean auto_repaint_enable

displayBuffer

protected java.lang.StringBuffer[] displayBuffer

mode

protected int mode

moveto_x

protected int moveto_x

moveto_y

protected int moveto_y

Constructor Detail

VT52Canvas

public VT52Canvas()

Method Detail

initFontAndColors

protected void initFontAndColors()

setFont

public void setFont(java.awt.Font f)

setTextFont

public void setTextFont(java.awt.Font f)

updateFontMetrics

public void updateFontMetrics()

addDummyMouseListener

public void addDummyMouseListener()

since JDK 1.1.6, we won't receive the keyboard focus, unless we ask for it. Request the focus on each mouse click.

initDisplayBuffer

protected void initDisplayBuffer()

resetMode

public void resetMode()

setCursor

public void setCursor(int x,
                      int y)

moveNewline

public void moveNewline()

moveCursorUp

public void moveCursorUp()

moveCursorUpWithScrolling

public void moveCursorUpWithScrolling()

moveCursorDown

public void moveCursorDown()

moveCursorRight

public void moveCursorRight()

moveCursorLeft

public void moveCursorLeft()

moveCursorHome

public void moveCursorHome()

moveCursorTo

public void moveCursorTo(int x,
                         int y)

clearRestOfLine

public void clearRestOfLine()

clearRestOfDisplay

public void clearRestOfDisplay()

identifyTerminal

public void identifyTerminal()

addChar

public void addChar(char c)

add one char to the VT52 emulation and interpret it. Currently, this model understands the following command sequences:

• ESC A: move cursor up one line
• ESC B: move cursor down on line
• ESC C: move cursor right one char
• ESC D: move cursor left one char
• ESC H: cursor home
• ESC I: move cursor up one line with scroll
• ESC Y l c: move cursor to line l, column c
• ESC J: erase from cursor to end of display
• ESC K: erase from cursor to end of line
• ESC Z: identify terminal (sends VT52)

addNormalChar

public void addNormalChar(char c)

clear

public void clear()

scrollUp

public void scrollUp()

clip

public int clip(int value,
                int minValue,
                int maxValue)

getMinimumSize

public java.awt.Dimension getMinimumSize()

getPreferredSize

public java.awt.Dimension getPreferredSize()

isOpaque

public boolean isOpaque()

paint

public void paint(java.awt.Graphics g)

paintCharAt

public void paintCharAt(java.awt.Graphics g,
                        int x,
                        int y)

showCursor

public void showCursor(java.awt.Graphics g)

hideCursor

public void hideCursor(java.awt.Graphics g)

getAutoRepaintEnable

public boolean getAutoRepaintEnable()

setAutoRepaintEnable

public void setAutoRepaintEnable(boolean b)

setAutoRepaintDelay

public void setAutoRepaintDelay(int millis)

startCursorBlinking

public void startCursorBlinking()

msg

public static void msg(java.lang.String s)

addDummyListener

public void addDummyListener()

message

public static void message(java.lang.String s)

main

public static void main(java.lang.String[] argv)

main(): simple selftest of the VT52Canvas