ilog.views.gantt.graphic

Class IlvActivityTileLayout.DefaultTilingPolicy

java.lang.Object

ilog.views.gantt.graphic.IlvActivityTileLayout.DefaultTilingPolicy

All Implemented Interfaces:

IlvActivityTileLayout.TilingPolicy

Enclosing class:

IlvActivityTileLayout

public static class IlvActivityTileLayout.DefaultTilingPolicy
extends Object
implements IlvActivityTileLayout.TilingPolicy

A DefaultTilingPolicy takes each given activity graphic and attempts to place it into the first existing subrow that will accommodate it. If no existing subrows have adequate space, then a new subrow is added at the end for the activity.

Since:

JViews 8.1

Constructor Summary

Constructors

Constructor and Description
DefaultTilingPolicy() Creates a new default tiling policy.

Method Summary

Modifier and Type	Method and Description
protected boolean	addGraphicToSubRowIfFits(IlvActivityTileLayout.GraphicBounds gb, List<IlvActivityTileLayout.GraphicBounds> subRow, boolean compareBoundingBoxes) Adds the specified activity graphic to the specified subrow if it fits.
List<List<IlvActivityTileLayout.GraphicBounds>>	assignGraphicsToSubRows(IlvActivityTileLayout.GraphicBounds[] graphics, boolean compareBoundingBoxes) Creates as many subrows as needed to accommodate the given activity graphics and assigns the activity graphics to the subrows.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultTilingPolicy

public DefaultTilingPolicy()

Creates a new default tiling policy.

Method Detail

addGraphicToSubRowIfFits

protected boolean addGraphicToSubRowIfFits(IlvActivityTileLayout.GraphicBounds gb,
                                           List<IlvActivityTileLayout.GraphicBounds> subRow,
                                           boolean compareBoundingBoxes)

Adds the specified activity graphic to the specified subrow if it fits. If the graphic is successfully added to the list of graphics for the subrow, this method returns true. If the graphic does not fit into the subrow, this method returns false. If the graphic does not fit into any of the existing subrows, the tiling policy will create a new subrow for the graphic. Note, that a graphic must always succeed in being added to an empty subrow.

Parameters:

gb - The GraphicBounds that encapsulates the activity graphic to be added and its current bounding box in view coordinates. Note, that the bounding box is provided as input only. Modifying the bounding box of the IlvActivityTileLayout.GraphicBounds will not affect how the activity is positioned.

subRow - The subrow, represented as a list of GraphicBounds objects.

compareBoundingBoxes - Indicates whether activity overlap is computed by comparing the graphic bounding boxes. If false, activity overlap is computed by comparing the activity time intervals.

Returns:

Indicates whether the activity graphic was successfully added to the subrow. If the specified subrow is empty, then this method must always succeed in adding the activity graphic.

assignGraphicsToSubRows

public List<List<IlvActivityTileLayout.GraphicBounds>> assignGraphicsToSubRows(IlvActivityTileLayout.GraphicBounds[] graphics,
                                                                               boolean compareBoundingBoxes)

Creates as many subrows as needed to accommodate the given activity graphics and assigns the activity graphics to the subrows. The activity graphics are provided with their view bounding boxes as an array of IlvActivityTileLayout.GraphicBounds. This allows the tiling policy to take advantage of the precomputed activity bounding boxes when computing graphic overlap and assigning activity graphics to subrows. The result of this method is a list of subrows, where each subrow is a list of IlvActivityTileLayout.GraphicBounds representing the activities assigned to the subrow. All activity graphics provided as input to the tiling policy must be assigned to one and only one subrow.

Specified by:

assignGraphicsToSubRows in interface IlvActivityTileLayout.TilingPolicy

Parameters:

graphics - The activity graphics to be tiled into subrows, as an array of IlvActivityTileLayout.GraphicBounds. If compareBoundingBoxes is true then the array will be sorted by the x position of each activity graphic's bounding box. If compareBoundingBoxes is false then the array will be sorted by the start time of each activity. Note, that the bounding boxes are provided as input only. Modifying the bounding box of a IlvActivityTileLayout.GraphicBounds will not affect how an activity is positioned.

compareBoundingBoxes - Indicates whether the tiling policy should compute activity overlap by comparing the graphic bounding boxes. If false, activity overlap should be computed by comparing the activity time intervals.

Returns:

The list of subrows, where each subrow is a list of IlvActivityTileLayout.GraphicBounds representing the activities assigned to the subrow.