de.jaret.util.ui.timebars.swt.renderer
Class DateStripRenderer

java.lang.Object
  de.jaret.util.ui.timebars.swt.renderer.RendererBase
      de.jaret.util.ui.timebars.swt.renderer.DateStripRenderer

All Implemented Interfaces:

TimeScaleRenderer

public class DateStripRenderer
extends RendererBase
implements TimeScaleRenderer

A simple TimeScaleRenderer that will always show the starting date. This can be quite useful in combination with other TimeScaleRenderers using a CombiningTimeScaleRenderer.

Author:

kliem

Field Summary

Fields inherited from class de.jaret.util.ui.timebars.swt.renderer.RendererBase

_printer, _scaleX, _scaleY

Constructor Summary

DateStripRenderer()

DateStripRenderer(org.eclipse.swt.printing.Printer printer)

Method Summary

TimeScaleRenderer	createPrintRenderer(org.eclipse.swt.printing.Printer printer) Create a timescale renderer setup for printing.
void	dispose() Dispose resources.
void	draw(org.eclipse.swt.graphics.GC gc, org.eclipse.swt.graphics.Rectangle drawingArea, TimeBarViewerDelegate delegate, boolean top, boolean printing) Draw the Timescale.
int	getHeight() Returns the prferred height for rendering.
java.lang.String	getToolTipText(TimeBarViewer tbv, org.eclipse.swt.graphics.Rectangle drawingArea, int x, int y) Retrieve the tooltip text for a given locatin in the timescale.
boolean	supportsOptimizedScrolling() Report whether this renderer can be used with optimized scrolling.

Methods inherited from class de.jaret.util.ui.timebars.swt.renderer.RendererBase

drawFocus, getDefaultLineWidth, getPrinter, getScaleX, getScaleY, scaleX, scaleY

Methods inherited from class java.lang.Object

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

Constructor Detail

DateStripRenderer

public DateStripRenderer()

DateStripRenderer

public DateStripRenderer(org.eclipse.swt.printing.Printer printer)

Method Detail

draw

public void draw(org.eclipse.swt.graphics.GC gc,
                 org.eclipse.swt.graphics.Rectangle drawingArea,
                 TimeBarViewerDelegate delegate,
                 boolean top,
                 boolean printing)

Description copied from interface: TimeScaleRenderer

Draw the Timescale.

Specified by:

draw in interface TimeScaleRenderer

Parameters:

gc - GraphicsContext to paint with.

drawingArea - Rectangel denoting the area to draw in. The gc is clipped to this area.

delegate - TimeBarViewerDelegate exposed for callbacks

top - if true the tmiescale is in position top, bottom otherwise

printing - flag to indicate printing.

getToolTipText

public java.lang.String getToolTipText(TimeBarViewer tbv,
                                       org.eclipse.swt.graphics.Rectangle drawingArea,
                                       int x,
                                       int y)

Description copied from interface: TimeScaleRenderer

Retrieve the tooltip text for a given locatin in the timescale.

Specified by:

getToolTipText in interface TimeScaleRenderer

Parameters:

tbv - TimeBarViewer

drawingArea - area in that the timescale has been painted

x - x coordinate

y - y coordinate

Returns:

tooltip text or null

getHeight

public int getHeight()

Description copied from interface: TimeScaleRenderer

Returns the prferred height for rendering.

Specified by:

getHeight in interface TimeScaleRenderer

Returns:

preferred height

dispose

public void dispose()

Description copied from interface: TimeScaleRenderer

Dispose resources.

Specified by:

dispose in interface TimeScaleRenderer

createPrintRenderer

public TimeScaleRenderer createPrintRenderer(org.eclipse.swt.printing.Printer printer)

Description copied from interface: TimeScaleRenderer

Create a timescale renderer setup for printing.

Specified by:

createPrintRenderer in interface TimeScaleRenderer

Parameters:

printer - Printer device taht will be used.

Returns:

timescale renderer setup for printing.

supportsOptimizedScrolling

public boolean supportsOptimizedScrolling()

Report whether this renderer can be used with optimized scrolling. This will usually be the case if all elements drawn are positioned by the date.

Specified by:

supportsOptimizedScrolling in interface TimeScaleRenderer

Returns:

true if optimzed drawing can be used.