Package org.biojava.bio.gui.sequence

Class RulerRenderer

java.lang.Object

org.biojava.bio.gui.sequence.RulerRenderer

All Implemented Interfaces:

SequenceRenderer

public class RulerRenderer
extends Object
implements SequenceRenderer

RulerRenderer renders numerical scales in sequence coordinates. The tick direction may be set to point upwards (or left when the scale is vertical) or downwards (right when the scale is vertical).

Note: The Compaq Java VMs 1.3.1 - 1.4.0 on Tru64 appear to have a bug in font transformation which prevents a vertically oriented ruler displaying correctly rotated text.

Author:

Matthew Pocock, Thomas Down, David Huen, Keith James, Kalle Näslund

Nested Class Summary

Nested classes/interfaces inherited from interface org.biojava.bio.gui.sequence.SequenceRenderer

SequenceRenderer.RendererForwarder

Field Summary

Fields

Modifier and Type	Field	Description
static int	TICKS_DOWN	TICKS_DOWN indicates that the ticks will point downwards from a baseline.
static int	TICKS_UP	TICKS_UP indicates that the ticks will point upwards from a baseline.

Constructor Summary

Constructors

Constructor	Description
RulerRenderer()	Creates a new RulerRenderer with the default setting of ticks pointing downwards.
RulerRenderer(int tickDirection)	Creates a new RulerRenderer with the specified tick direction.

Method Summary

Modifier and Type	Method	Description
double	getDepth(SequenceRenderContext src)	Retrieve the depth of this renderer when rendering src.
double	getMinimumLeader(SequenceRenderContext context)	Retrieve the minimum leading distance for this renderer when rendering src.
double	getMinimumTrailer(SequenceRenderContext context)	Retrieve the minimum trailing distance for this renderer when rendering src.
void	paint(Graphics2D g2, SequenceRenderContext context)	Render a portion (possibly all) of the information for src to g, displaying all of the data that would fall within seqBox.
SequenceViewerEvent	processMouseEvent(SequenceRenderContext context, MouseEvent me, List path)	Produce a SequenceViewerEvent in response to a mouse gesture.

Methods inherited from class java.lang.Object

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

Field Detail

TICKS_UP

public static final int TICKS_UP

TICKS_UP indicates that the ticks will point upwards from a baseline.

See Also:

Constant Field Values

TICKS_DOWN

public static final int TICKS_DOWN

TICKS_DOWN indicates that the ticks will point downwards from a baseline.

See Also:

Constant Field Values

Constructor Detail

RulerRenderer

public RulerRenderer()
              throws IllegalArgumentException

Creates a new RulerRenderer with the default setting of ticks pointing downwards.

Throws:

IllegalArgumentException

RulerRenderer

public RulerRenderer(int tickDirection)
              throws IllegalArgumentException

Creates a new RulerRenderer with the specified tick direction.

Parameters:

tickDirection - an int.

Throws:

IllegalArgumentException - if an error occurs.

Method Detail

getMinimumLeader

public double getMinimumLeader(SequenceRenderContext context)

Description copied from interface: SequenceRenderer

Retrieve the minimum leading distance for this renderer when rendering src.

The leading distance may vary between sequence panels - for example based upon sequence length.

Specified by:

getMinimumLeader in interface SequenceRenderer

Parameters:

context - the SequenceRenderContext to return info for

Returns:

the leading distance of the renderer for that sequence panel

getMinimumTrailer

public double getMinimumTrailer(SequenceRenderContext context)

Description copied from interface: SequenceRenderer

Retrieve the minimum trailing distance for this renderer when rendering src.

The trailing distance may vary between sequence panels - for example based upon sequence length.

Specified by:

getMinimumTrailer in interface SequenceRenderer

Parameters:

context - the SequenceRenderContext to return info for

Returns:

the trailing distance of the renderer for that sequence panel

getDepth

public double getDepth(SequenceRenderContext src)

Description copied from interface: SequenceRenderer

Retrieve the depth of this renderer when rendering src.

The depth may vary between sequence panels - for example based upon sequence length. Each line of information in the SequenceRendererContext only renders a region of the sequence. The depth for one complete line may be different from that for another due to the sequence having more or less information in that region to show. For example, a feature renderer implementation may chose to collapse down to a depth of zero pixels if there are no features to render within a region.

Specified by:

getDepth in interface SequenceRenderer

Parameters:

src - the SequenceRenderContext to return info for

Returns:

the depth of the renderer for that sequence panel

paint

public void paint(Graphics2D g2,
                  SequenceRenderContext context)

Description copied from interface: SequenceRenderer

Render a portion (possibly all) of the information for src to g, displaying all of the data that would fall within seqBox.

Specified by:

paint in interface SequenceRenderer

Parameters:

g2 - the Graphics2D to render to

context - the SequenceRenderContext that encapsulates the information to render

processMouseEvent

public SequenceViewerEvent processMouseEvent(SequenceRenderContext context,
                                             MouseEvent me,
                                             List path)

Description copied from interface: SequenceRenderer

Produce a SequenceViewerEvent in response to a mouse gesture.

A SequenceRenderer that performs any form of coordinate remapping should ensure that it appropriately transforms the mouse event. However, in the SequenceViewerEvent returned, the MouseEvent should be in untransformed coordinates.

The SequenceRenderer implementation should append itself to the path list before constructing the SequenceViewerEvent.

Specified by:

processMouseEvent in interface SequenceRenderer

Parameters:

context - the SequenceRenderContext currently in scope

me - a MouseEvent that caused this request

path - the List of SequenceRenderer instances passed through so far

Returns:

a SequenceViewerEvent encapsulating the mouse gesture