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Class life.GridDisplay

java.lang.Object
   |
   +----java.awt.Component
           |
           +----java.awt.Container
                   |
                   +----java.awt.Panel
                           |
                           +----life.GridDisplay

public class GridDisplay
extends Panel

A GridDisplay object displays a Grid object.

backgroundColor: Background color.
cellColor: Cell color.
cellColors: Available Cell colors.
cellHeight: Width and height of Cells in this GridDisplay.
cellWidth: Width and height of Cells in this GridDisplay.
currX: X grid coordinate of Cell over which mouse was most recently pressed.
currY: Y grid coordinate of Cell over which mouse was most recently pressed.
DRAWING: The user is in draw mode.
drawMode: Current drawing mode.
ERASING: The user is in erase mode.
gridHeight: Width and height of this GridDisplay (in Cells).
gridWidth: Width and height of this GridDisplay (in Cells).
height: Width and height of this GridDisplay (in pixels).
maxAge: Maximum Cell age.
offGraphics: Offscreen graphics context.
offImage: Offscreen drawing Image.
paintAll: Paint all cells in GridDisplay or only those which have changed since last generation?
parent: The parent LifeDisplay of this GridDisplay.
shades: Number of shades.
theLife: The Life object to be displayed by this GridDisplay.
width: Width and height of this GridDisplay (in pixels).

GridDisplay(Life, LifeDisplay): Construct a GridDisplay to display theLife within LifeDisplay.

GridDisplay_MouseDrag(MouseEvent): Respond to a mouse drag.
GridDisplay_MousePress(MouseEvent): Respond to a mouse press.
paint(Graphics): Default paint() method.
paint(Graphics, boolean): Paint with option to paint only the dirty (changed) Cells in the GridDisplay.
pixelXToGridX(int): Convert a pixel X coordinate to a GridDisplay X coordinate.
pixelYToGridY(int): Convert a pixel Y coordinate to GridDisplay Y coordinate.
setBackgroundColor(Color): Set the current background color.
setCellColor(Color): Set the current Cell color.
setDrawMode(int): Set the current drawing mode.
setGridSize(): Set the size of the grid.
setPaintAll(boolean): Indicate whether all Cells in the GridDisplay should be displayed or only the dirty Cells.
setShades(int): Set the current number of shades of colors.
update(Graphics): Update the GridDisplay.

DRAWING

 static final int DRAWING

The user is in draw mode.

ERASING

 static final int ERASING

The user is in erase mode.

theLife

 Life theLife

The Life object to be displayed by this GridDisplay.

parent

 LifeDisplay parent

The parent LifeDisplay of this GridDisplay.

width

 int width

Width and height of this GridDisplay (in pixels).

height

 int height

Width and height of this GridDisplay (in pixels).

gridWidth

 int gridWidth

Width and height of this GridDisplay (in Cells).

gridHeight

 int gridHeight

Width and height of this GridDisplay (in Cells).

cellWidth

 int cellWidth

Width and height of Cells in this GridDisplay.

cellHeight

 int cellHeight

Width and height of Cells in this GridDisplay.

drawMode

 int drawMode

Current drawing mode.

maxAge

 int maxAge

Maximum Cell age.

offImage

 Image offImage

Offscreen drawing Image.

offGraphics

 Graphics offGraphics

Offscreen graphics context.

cellColor

 Color cellColor

Cell color.

backgroundColor

 Color backgroundColor

Background color.

shades

 int shades

Number of shades.

cellColors

 Color cellColors[]

Available Cell colors.

currX

 int currX

X grid coordinate of Cell over which mouse was most recently pressed.

currY

 int currY

Y grid coordinate of Cell over which mouse was most recently pressed.

paintAll

 boolean paintAll

Paint all cells in GridDisplay or only those which have changed since last generation?

GridDisplay

 GridDisplay(Life theLife,
             LifeDisplay parent)

Construct a GridDisplay to display theLife within LifeDisplay.

Parameters:: theLife - The Life object to display.; parent - The parent LifeDisplay of this GridDisplay.

setGridSize

 synchronized void setGridSize()

Set the size of the grid.

setDrawMode

 void setDrawMode(int drawMode)

Set the current drawing mode.

Parameters:: drawMode - The drawing mode to set (drawing or erasing).

setCellColor

 synchronized void setCellColor(Color c)

Set the current Cell color.

Parameters:: c - The color to use.

setBackgroundColor

 synchronized void setBackgroundColor(Color c)

Set the current background color.

Parameters:: c - The color to use.

setShades

 synchronized void setShades(int s)

Set the current number of shades of colors.

Parameters:: s - The number of shades.

setPaintAll

 void setPaintAll(boolean paintAll)

Indicate whether all Cells in the GridDisplay should be displayed or only the dirty Cells.

Parameters:: paintAll - True if all Cells should be displayed, false otherwise.

paint

 public void paint(Graphics g)

Default paint() method.

Parameters:: g - The graphics context.
Overrides:: paint in class Container

paint

 public void paint(Graphics g,
                   boolean paintAll)

Paint with option to paint only the dirty (changed) Cells in the GridDisplay.

Parameters:: g - The graphics context in which to paint.; paintall - True if all Cells should be painted, false otherwise.

update

 public void update(Graphics g)

Update the GridDisplay.

Parameters:: g - The graphics context to use.
Overrides:: update in class Container

GridDisplay_MousePress

 void GridDisplay_MousePress(MouseEvent event)

Respond to a mouse press.

GridDisplay_MouseDrag

 void GridDisplay_MouseDrag(MouseEvent event)

Respond to a mouse drag.

pixelXToGridX

 int pixelXToGridX(int pixelX)

Convert a pixel X coordinate to a GridDisplay X coordinate.

Parameters:: pixelX - The pixel X coordinate.

pixelYToGridY

 int pixelYToGridY(int pixelY)

Convert a pixel Y coordinate to GridDisplay Y coordinate.

Parameters:: pixelY - The pixel Y coordinate.

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