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Class symantec.itools.awt.shape.Line

Object
   |
   +----Component
           |
           +----symantec.itools.awt.shape.Line

public class Line

extends Component

Version:

1.1, July 30, 1997

Author:

Symantec

lineThickness

The thickness of the line to draw.

poly

The polygon that defines the line when lineThickness is larger than 1.

slopeType

The slope type of the line to be drawn (either positive (true) or negative (false)).

symantec.itools.awt.shape.Line()

Constructs a default Line with positive slope and thickness of 1 pixel.

addPropertyChangeListener(PropertyChangeListener)

Adds a listener for all property change events.

addVetoableChangeListener(VetoableChangeListener)

Adds a listener for all vetoable property change events.

contains(int, int)

Checks whether this component "contains" the specified (x, y) location, where x and y are defined to be relative to the coordinate system of this component.

getLineThickness()

Gets the thickness of the line to draw.

getMinimumSize()

Returns the minimum dimensions to properly display this component.

getPreferredSize()

Returns the recommended dimensions to properly display this component.

isPositiveSlope()

Gets the slope type of the line to draw.

paint(Graphics)

Paints the line using the given graphics context.

removePropertyChangeListener(PropertyChangeListener)

Removes a listener for all property change events.

removeVetoableChangeListener(VetoableChangeListener)

Removes a listener for all vetoable property change events.

setLineThickness(int)

Sets the thikcness of the line to draw.

setPositiveSlope(boolean)

Sets the slope type of the line to draw.

protected int lineThickness

The thickness of the line to draw.

protected java.awt.Polygon poly

The polygon that defines the line when lineThickness is larger than 1.

protected boolean slopeType

The slope type of the line to be drawn (either positive (true) or negative (false)).

public Line()

Constructs a default Line with positive slope and thickness of 1 pixel.

public synchronized void addPropertyChangeListener(PropertyChangeListener listener)

Adds a listener for all property change events.

Parameters:

listener - the listener to add

See Also:

removePropertyChangeListener

public synchronized void addVetoableChangeListener(VetoableChangeListener listener)

Adds a listener for all vetoable property change events.

Parameters:

listener - the listener to add

See Also:

removeVetoableChangeListener

public boolean contains(int x,
                        int y)

Checks whether this component "contains" the specified (x, y) location, where x and y are defined to be relative to the coordinate system of this component.

Parameters:

x - the x coordinate

y - the y coordinate

Overrides:

contains in class Component

See Also:

getComponentAt

public int getLineThickness()

Gets the thickness of the line to draw.

Returns:

the thickness of the line in pixels

See Also:

setLineThickness

public java.awt.Dimension getMinimumSize()

Returns the minimum dimensions to properly display this component. This is a standard Java AWT method which gets called to determine the minimum size of this component. Returns the results of a call to getPreferredSize.

Overrides:

getMinimumSize in class Component

See Also:

getPreferredSize

public java.awt.Dimension getPreferredSize()

Returns the recommended dimensions to properly display this component. This is a standard Java AWT method which gets called to determine the recommended size of this component.

Returns:

horiziontal and vertical dimensions of 50, 50

Overrides:

getPreferredSize in class Component

See Also:

minimumSize

public boolean isPositiveSlope()

Gets the slope type of the line to draw.

Returns:

true if the line will be drawn from the lowwer left corner to the upper right corner. false if the line will be drawn from the upper left corner to the bottom right corner.

See Also:

setPositiveSlope

public void paint(Graphics g)

Paints the line using the given graphics context. This is a standard Java AWT method which typically gets called by the AWT to handle painting this component. It paints this component using the given graphics context. The graphics context clipping region is set to the bounding rectangle of this component and its <0,0> coordinate is this component's top-left corner.

Parameters:

g - the graphics context used for painting

Overrides:

paint in class Component

See Also:

repaint, update

public synchronized void removePropertyChangeListener(PropertyChangeListener listener)

Removes a listener for all property change events.

Parameters:

listener - the listener to remove

See Also:

addPropertyChangeListener

public synchronized void removeVetoableChangeListener(VetoableChangeListener listener)

Removes a listener for all vetoable property change events.

Parameters:

listener - the listener to remove

See Also:

addVetoableChangeListener

public void setLineThickness(int thickness) throws PropertyVetoException

Sets the thikcness of the line to draw.

Parameters:

thickness - the thickness of the line in pixels

Throws: PropertyVetoException

if the specified property value is unacceptable

See Also:

getLineThickness

public void setPositiveSlope(boolean type) throws PropertyVetoException

Sets the slope type of the line to draw.

Parameters:

type - if the type is true the line will be drawn from the lowwer left corner to the upper right corner. If the type is false, the line will be drawn from the upper left corner to the bottom right corner.

Throws: PropertyVetoException

if the specified property value is unacceptable

See Also:

isPositiveSlope

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