uci.gef
Class LayerGrid

java.lang.Object
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  +--uci.gef.Layer
        |
        +--uci.gef.LayerGrid

public class LayerGrid

extends Layer

Paint a background drawing guide consisting of horizontal and vertical lines in a neutral color. This feature is common to many drawing applications (e.g., MacDraw). LayerGrid is in concept a Layer, just like any other so it can be composed, locked, grayed, hidden, and reordered.

Needs-More-Work: Since I am using image stamping and AWT does not support transparent pixels, any Layer underneath an instance of LayerGrid will not be seen. Image stamping is nice because it is fast, but I need to think of some other fast way to do it...

See Also:

Serialized Form

Field Summary

protected Color	_bgColor The color of the space between the lines or dots.
protected Color	_color The color of the grid lines or dots.
protected int	_dotSize The size of the dots.
protected boolean	_paintBackground True means to fill in the image stamp or drawing area with the background color.

Fields inherited from class uci.gef.Layer

_editors, _onMenu

Constructor Summary

LayerGrid()
Construct a new LayerGrid and name it 'Grid'.

LayerGrid(Color fore, Color back, int spacing, boolean lines)
Construct a new LayerGrid with the given foreground color, background color, line spacing, and lines/dots flag.

Method Summary

void	adjust() Eventually this will open a dialog box to let the user adjust the grid line spacing, colors, and whether liens or dots are shown.
Vector	getContents()
void	paintContents(Graphics g) Paint the grid lines or dots by repeatedly bitblting a precomputed 'stamp' onto the given Graphics
protected void	paintDots(Graphics g, boolean paintBackground) Paint dots on the given Graphics.
Fig	presentationFor(Object obj)

Methods inherited from class uci.gef.Layer

add, addEditor, bringForward, bringInFrontOf, bringToFront, damaged, deleted, elements, elementsIn, fetHidden, findLayerNamed, getContentsEdgesOnly, getContentsNoEdges, getEditors, getGrayed, getLocked, getName, getOnMenu, getPerspectiveType, hit, nodesIn, paint, paintGrayContents, postLoad, postSave, preSave, print, refreshEditors, remove, removeAll, removeEditor, reorder, sendBackward, sendToBack, setGrayed, setHidden, setLocked, setName, setOnMenu, setPerspectiveType, toString

Methods inherited from class java.lang.Object

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

Field Detail

_color

protected Color _color

The color of the grid lines or dots.

_bgColor

protected Color _bgColor

The color of the space between the lines or dots.

_paintBackground

protected boolean _paintBackground

True means to fill in the image stamp or drawing area with the background color. False means to just paint the lines or dots.

_dotSize

protected int _dotSize

The size of the dots. Dots are actually small rectangles.

Constructor Detail

LayerGrid

public LayerGrid()

Construct a new LayerGrid and name it 'Grid'.

LayerGrid

public LayerGrid(Color fore,
                 Color back,
                 int spacing,
                 boolean lines)

Construct a new LayerGrid with the given foreground color, background color, line spacing, and lines/dots flag.

Method Detail

getContents

public Vector getContents()

Overrides:

getContents in class Layer

presentationFor

public Fig presentationFor(Object obj)

Overrides:

presentationFor in class Layer

paintContents

public void paintContents(Graphics g)

Paint the grid lines or dots by repeatedly bitblting a precomputed 'stamp' onto the given Graphics

Overrides:

paintContents in class Layer

paintDots

protected void paintDots(Graphics g,
                         boolean paintBackground)

Paint dots on the given Graphics.

adjust

public void adjust()

Eventually this will open a dialog box to let the user adjust the grid line spacing, colors, and whether liens or dots are shown. For now it just cycles among 5 predefined styles.

Overrides:

adjust in class Layer