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Class display.CharDisplay

java.lang.Object
   |
   +----java.awt.Component
           |
           +----java.awt.Container
                   |
                   +----java.awt.Panel
                           |
                           +----display.CharDisplay

public class CharDisplay

extends Panel

Version:

$Id: CharDisplay.java,v 1.26 1998/02/09 08:26:33 leo Exp $

Author:

Matthias L. Jugel, Marcus Meißner

BOLD

Make character bold.

debug

Enable debug messages.

INVERT

Invert character.

NORMAL

Make character normal.

RESIZE_FONT

Resize the font to the new screensize.

RESIZE_NONE

Do nothing when the container is resized.

RESIZE_SCREEN

Resize the width and height of the characterscreen.

SCROLL_DOWN

Scroll down when inserting a line.

SCROLL_UP

Scroll up when inserting a line.

UNDERLINE

Underline character.

version

If you need the runtime version, just ask this variable.

CharDisplay()

Create a character display with size 80x24 and Font "Courier", size 12.

CharDisplay(int, int)

Create a character display with specific size, Font is "Courier", size 12.

CharDisplay(int, int, String, int)

Create a character display with specific size, font and font size.

CharDisplay(String, int)

Create a character display with 80x24 and specific font and font size.

deleteArea(int, int, int, int)

Delete a rectangular portion of the screen.

deleteChar(int, int)

Delete a character at a given position on the screen.

deleteLine(int)

Delete a line at a specific position.

getAttributes(int, int)

Get the attributes for the specified position.

getBottomMargin()

Get the bottom scroll margin.

getBufferSize()

Retrieve current scrollback buffer size.

getChar(int, int)

Get the character at the specified position.

getColumns()

Get amount of columns on the screen.

getCursorPos()

Get the current cursor position.

getMaxBufferSize()

Retrieve maximum buffer Size.

getRows()

Get amount of rows on the screen.

getTopMargin()

Get the top scroll margin.

getWindowBase()

Get the current window base.

handleEvent(Event)

Handle mouse events for copy & paste

insertChar(int, int, char, int)

Insert a character at a specific position on the screen.

insertLine(int)

Insert a blank line at a specific position.

insertLine(int, boolean)

Insert a blank line at a specific position.

insertLine(int, int)

Insert blank lines at a specific position.

insertLine(int, int, boolean)

Insert blank lines at a specific position.

insets()

The insets of the character display define the border.

markLine(int, int)

Mark lines to be updated with redraw().

paint(Graphics)

Paint the current screen.

preferredSize()

Return the preferred Size of the character display.

putChar(int, int, char)

Put a character on the screen with normal font and outline.

putChar(int, int, char, int)

Put a character on the screen with specific font and outline.

putString(int, int, String)

Put a String at a specific position.

putString(int, int, String, int)

Put a String at a specific position giving all characters the same attributes.

redraw()

Redraw marked lines.

reshape(int, int, int, int)

Reshape character display according to resize strategy.

setBorder(int, boolean)

Set the border thickness and the border type.

setBottomMargin(int)

Set the bottom scroll margin for the screen.

setBufferSize(int)

Set scrollback buffer size.

setCursorPos(int, int)

Puts the cursor at the specified position.

setResizeStrategy(int)

Set the strategy when window is resized.

setScrollbar(String)

Set the scrollbar position.

setTopMargin(int)

Set the top scroll margin for the screen.

setWindowBase(int)

Set the current window base.

setWindowSize(int, int)

Change the size of the screen.

size()

Return the real size in points of the character display.

update(Graphics)

Update the display.

  public String version

If you need the runtime version, just ask this variable.

  public final static int debug

Enable debug messages. This is final static to prevent unused code to be compiled.

  public final static boolean SCROLL_UP

Scroll up when inserting a line.

  public final static boolean SCROLL_DOWN

Scroll down when inserting a line.

  public final static int RESIZE_NONE

Do nothing when the container is resized.

  public final static int RESIZE_SCREEN

Resize the width and height of the characterscreen.

  public final static int RESIZE_FONT

Resize the font to the new screensize.

  public final static int NORMAL

Make character normal.

  public final static int BOLD

Make character bold.

  public final static int UNDERLINE

Underline character.

  public final static int INVERT

Invert character.

  public CharDisplay()

Create a character display with size 80x24 and Font "Courier", size 12.

  public CharDisplay(int width,
                     int height)

Create a character display with specific size, Font is "Courier", size 12.

  public CharDisplay(String fname,
                     int fsize)

Create a character display with 80x24 and specific font and font size.

  public CharDisplay(int width,
                     int height,
                     String fname,
                     int fsize)

Create a character display with specific size, font and font size.

  public void putChar(int c,
                      int l,
                      char ch)

Put a character on the screen with normal font and outline. The character previously on that position will be overwritten. You need to call redraw() to update the screen.

Parameters:

c - x-coordinate (column)

l - y-coordinate (line)

ch - the character to show on the screen

See Also:

insertChar, deleteChar, redraw

  public void putChar(int c,
                      int l,
                      char ch,
                      int attributes)

Put a character on the screen with specific font and outline. The character previously on that position will be overwritten. You need to call redraw() to update the screen.

Parameters:

c - x-coordinate (column)

l - y-coordinate (line)

ch - the character to show on the screen

attributes - the character attributes

See Also:

BOLD, UNDERLINE, INVERT, NORMAL, insertChar, deleteChar, redraw

  public char getChar(int c,
                      int l)

Get the character at the specified position.

Parameters:

c - x-coordinate (column)

l - y-coordinate (line)

See Also:

putChar

  public int getAttributes(int c,
                           int l)

Get the attributes for the specified position.

Parameters:

c - x-coordinate (column)

l - y-coordinate (line)

See Also:

putChar

  public void insertChar(int c,
                         int l,
                         char ch,
                         int attributes)

Insert a character at a specific position on the screen. All character right to from this position will be moved one to the right. You need to call redraw() to update the screen.

Parameters:

c - x-coordinate (column)

l - y-coordinate (line)

ch - the character to insert

attributes - the character attributes

See Also:

BOLD, UNDERLINE, INVERT, NORMAL, putChar, deleteChar, redraw

  public void deleteChar(int c,
                         int l)

Delete a character at a given position on the screen. All characters right to the position will be moved one to the left. You need to call redraw() to update the screen.

Parameters:

c - x-coordinate (column)

l - y-coordinate (line)

See Also:

putChar, insertChar, redraw

  public void putString(int c,
                        int l,
                        String s)

Put a String at a specific position. Any characters previously on that position will be overwritten. You need to call redraw() for screen update.

Parameters:

c - x-coordinate (column)

l - y-coordinate (line)

s - the string to be shown on the screen

See Also:

BOLD, UNDERLINE, INVERT, NORMAL, putChar, insertLine, deleteLine, redraw

  public void putString(int c,
                        int l,
                        String s,
                        int attributes)

Put a String at a specific position giving all characters the same attributes. Any characters previously on that position will be overwritten. You need to call redraw() to update the screen.

Parameters:

c - x-coordinate (column)

l - y-coordinate (line)

s - the string to be shown on the screen

attributes - character attributes

See Also:

BOLD, UNDERLINE, INVERT, NORMAL, putChar, insertLine, deleteLine, redraw

  public void insertLine(int l)

Insert a blank line at a specific position. The current line and all previous lines are scrolled one line up. The top line is lost. You need to call redraw() to update the screen.

Parameters:

l - the y-coordinate to insert the line

See Also:

deleteLine, redraw

  public void insertLine(int l,
                         int n)

Insert blank lines at a specific position. You need to call redraw() to update the screen

Parameters:

l - the y-coordinate to insert the line

n - amount of lines to be inserted

See Also:

deleteLine, redraw

  public void insertLine(int l,
                         boolean scrollDown)

Insert a blank line at a specific position. Scroll text according to the argument. You need to call redraw() to update the screen

Parameters:

l - the y-coordinate to insert the line

scrollDown - scroll down

See Also:

deleteLine, SCROLL_UP, SCROLL_DOWN, redraw

  public synchronized void insertLine(int l,
                                      int n,
                                      boolean scrollDown)

Insert blank lines at a specific position. The current line and all previous lines are scrolled one line up. The top line is lost. You need to call redraw() to update the screen.

Parameters:

l - the y-coordinate to insert the line

n - number of lines to be inserted

scrollDown - scroll down

See Also:

deleteLine, SCROLL_UP, SCROLL_DOWN, redraw

  public void deleteLine(int l)

Delete a line at a specific position. Subsequent lines will be scrolled up to fill the space and a blank line is inserted at the end of the screen.

Parameters:

l - the y-coordinate to insert the line

See Also:

deleteLine

  public void deleteArea(int c,
                         int l,
                         int w,
                         int h)

Delete a rectangular portion of the screen. You need to call redraw() to update the screen.

Parameters:

c - x-coordinate (column)

l - y-coordinate (row)

w - with of the area in characters

h - height of the area in characters

See Also:

deleteChar, deleteLine, redraw

  public void setCursorPos(int c,
                           int l)

Puts the cursor at the specified position.

Parameters:

c - column

l - line

  public Dimension getCursorPos()

Get the current cursor position.

See Also:

Dimension

  public void setTopMargin(int l)

Set the top scroll margin for the screen. If the current bottom margin is smaller it will become the top margin and the line will become the bottom margin.

Parameters:

l - line that is the margin

  public int getTopMargin()

Get the top scroll margin.

  public void setBottomMargin(int l)

Set the bottom scroll margin for the screen. If the current top margin is bigger it will become the bottom margin and the line will become the top margin.

Parameters:

l - line that is the margin

  public int getBottomMargin()

Get the bottom scroll margin.

  public void setBufferSize(int amount)

Set scrollback buffer size.

Parameters:

amount - new size of the buffer

  public int getBufferSize()

Retrieve current scrollback buffer size.

See Also:

setBufferSize

  public int getMaxBufferSize()

Retrieve maximum buffer Size.

See Also:

getBufferSize

  public void setWindowBase(int line)

Set the current window base. This allows to view the scrollback buffer.

Parameters:

line - the line where the screen window starts

See Also:

setBufferSize, getBufferSize

  public int getWindowBase()

Get the current window base.

See Also:

setWindowBase

  public void setWindowSize(int width,
                            int height)

Change the size of the screen. This will include adjustment of the scrollback buffer.

Parameters:

columns - width of the screen

columns - height of the screen

  public void setResizeStrategy(int strategy)

Set the strategy when window is resized. RESIZE_FONT is default.

Parameters:

strategy - the strategy

See Also:

RESIZE_NONE, RESIZE_FONT, RESIZE_SCREEN

  public int getRows()

Get amount of rows on the screen.

  public int getColumns()

Get amount of columns on the screen.

  public void setBorder(int thickness,
                        boolean raised)

Set the border thickness and the border type.

Parameters:

thickness - border thickness in pixels, zero means no border

raised - a boolean indicating a raised or embossed border

  public void setScrollbar(String position)

Set the scrollbar position. valid values are "East" or "West".

Parameters:

position - the position of the scrollbar

  public void markLine(int l,
                       int n)

Mark lines to be updated with redraw().

Parameters:

l - starting line

n - amount of lines to be updated

See Also:

redraw

  public void redraw()

Redraw marked lines.

See Also:

markLine

  public void update(Graphics g)

Update the display. to reduce flashing we have overridden this method.

Overrides:

update in class Component

  public synchronized void paint(Graphics g)

Paint the current screen. All painting is done here. Only lines that have changed will be redrawn!

Overrides:

paint in class Component

  public void reshape(int x,
                      int y,
                      int w,
                      int h)

Reshape character display according to resize strategy.

Overrides:

reshape in class Component

See Also:

setResizeStrategy

  public Dimension size()

Return the real size in points of the character display.

Returns:

Dimension the dimension of the display

Overrides:

size in class Component

See Also:

Dimension

  public Dimension preferredSize()

Return the preferred Size of the character display. This turns out to be the actual size.

Returns:

Dimension dimension of the display

Overrides:

preferredSize in class Container

See Also:

size

  public Insets insets()

The insets of the character display define the border.

Returns:

Insets border thickness in pixels

Overrides:

insets in class Container

  public boolean handleEvent(Event evt)

Handle mouse events for copy & paste

Parameters:

evt - the event that occured

Returns:

boolean true if action was taken

Overrides:

handleEvent in class Component

See Also:

Event

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