com.ridgesoft.io
Class Display

java.lang.Object
  com.ridgesoft.io.Display

public abstract class Display
extends Object

Abstract class for character output displays.

Constructor Summary

protected

Display(int width, int height) Initializes a Display object.

Method Summary

int	getHeight() Gets the height of the display in characters.
int	getWidth() Gets the width of the display in characters.
void	print(int line, byte[] bytes) Prints ASCII bytes to the specified line on the display screen.
void	print(int line, String string) Prints a string to the specified line on the display screen.
abstract boolean	printChar(int line, int column, byte character) Prints a character on the display.

Methods inherited from class java.lang.Object

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

Constructor Detail

Display

protected Display(int width,
                  int height)

Initializes a Display object.

Parameters:

width - number of characters wide

height - number of characters high

Method Detail

getHeight

public int getHeight()

Gets the height of the display in characters.

Returns:

display height in characters

getWidth

public int getWidth()

Gets the width of the display in characters.

Returns:

display width in characters

print

public void print(int line,
                  byte[] bytes)

Prints ASCII bytes to the specified line on the display screen.

Parameters:

line - line to print to

bytes - ASCII bytes to print

print

public void print(int line,
                  String string)

Prints a string to the specified line on the display screen.

Parameters:

line - line to print on

string - string to print

printChar

public abstract boolean printChar(int line,
                                  int column,
                                  byte character)

Prints a character on the display.

This method should normally not be called directly.

Parameters:

line - line to print on

column - column to print in, starting at 0

character - ASCII character to print

Returns:

true if the character was printed, false if the display was busy