JViews 3.5 Graphics Framework Release Notes

This document describes the main changes that have been made to the JViews Graphics Framework module since version 3.0.

Incompatibilities
General Changes
Library Changes
       New Classes

• IlvCenterLinkConnector
• IlvToolTipManager

• IlvManager
• IlvManagerView
• IlvIndexedSet
• IlvSpline
• IlvSplineLinkImage
• IlvMakeSplineInteractor
• IlvGraphicUtil
• IlvMakeLinkInteractor
• IlvLinkImage
• IlvArrowPolyline
• IlvLinkConnector
• IlvIcon
• IlvGeneralPath
• IlvGraphicSet
• IlvZoomableLabel
• IlvLabel
• IlvGraphic
• IlvReliefLabel
• IlvShadowLabel

Changes in Composer
Demonstration Changes

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Incompatibilities

Some deprecated methods and classes of JViews 3.0 have been removed; check the JViews 3.0 Reference Manual for alternatives in each case. The IlvZoomableLabel class no longer inherits from IlvLabel. However, all JViews 3.0 methods are still there, and IlvZoomableLabel still implements IlvFontInterface and IlvLabelInterface.

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General Changes

The main general changes are the following:

• JDK 1.3
  In addition to JDK 1.1.8 and JDK 1.2.2, JViews 3.5 has been tested on JDK 1.3 and we encourage you to use this version of the JDK.
   
• New Thin-client / Servlet support
  The new packages ilog.views.thinclient and ilog.views.servlet allow you to use the JViews library on the server side, using the Java Servlet API. See the User's Manual for details.
   
• SVG support
  The new package ilog.views.svg and its subpackages contains support for reading and writing the new SVG (Scalable Vector Graphics) format when running Java 2. See the User's Manual for details.
   
• Java2D extensions
  The new package ilog.views.java2d contains Java2D extensions for multicolor linear and circular gradients.

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Library Changes

New Classes

ilog.views.IlvCenterLinkConnector

A new link connector that connects the link on the center of the node.

ilog.views.swing.IlvToolTipManager

Enables Swing tooltips in an IlvManagerView.

Modified Classes

ilog.views.IlvManager

• Optimization of Manager and Quadtree internal structures improves the speed of manager operations.
• Changing the zoomability of a graphic object using applyToObject is now possible.
• New methods:
  • public void check(boolean verbose): Checks the Quadtree, for debugging purposes.

ilog.views.IlvManagerView

• Improved fitTransformerToContent when non-zoomable objects are present.
• New methods:
  Implementation of triple buffering:
  
  • setTripleBufferedLayerCount: Sets the number of triple buffered layers.
    
  • getTripleBufferedLayerCount: Returns the number of triple buffered layers.
    
  • invalidateTripleBuffer: Invalidates the triple buffer.

ilog.views.IlvIndexedSet

• New methods:
  • setQuadtreeEnabled/isQuadtreeEnabled: Allows you to enable or disable the quadtree on a layer.

ilog.views.graphic.IlvSpline

• New methods:
  • setSmoothness: Sets the smoothness of the spline. If the value is between 0 and 1, multipoint splines are drawn smoothly. If the value is IlvGraphicUtil.COMPATIBLE_SMOOTHNESS, multipoint splines are compatible with JViews 3.0, which means abrupt bends at each fourth control point.
    We recommend using a smoothness around 0.5 to 0.8. The same mechanism is available for the derived classes IlvClosedSpline and IlvFilledSpline.
  • getSmoothness: Returns the smoothness of the spline.

ilog.views.graphic.IlvSplineLinkImage

• New methods:
  • setSmoothness: Sets the smoothness of the spline. If the value is between 0 and 1, multipoint splines are drawn smoothly. If the value is IlvGraphicUtil.COMPATIBLE_SMOOTHNESS, multipoint splines are compatible with JViews 3.0, which means abrupt bends at each fourth control point. We recommend using a smoothness around 0.5 to 0.8.
  • getSmoothness: Returns the smoothness of the spline.

ilog.views.interactor.IlvMakeSplineInteractor

• New methods:
  • setSmoothness: Sets the smoothness of the spline to be created. See IlvSpline. The default smoothness is 0.65, so by default the interactor creates smoother splines than in version 3.0.
  • getSmoothness: Returns the smoothness of the spline.

ilog.views.IlvGraphicUtil

• New fields:
  • COMPATIBLE_SMOOTHNESS: The smoothness value for Bezier splines such that they look exactly as in versions 3.0 and earlier.
• New methods:
  • DrawBezier, DrawClosedBezier, FillBezier, BezierBoundingBox,
    ClosedBezierBoundingBox, PointInBezier,
    PointInClosedBezier, PointInFilledBezier: A new variant of each of these methods exists that takes the smoothness value of splines as input, and it is suitable to handle smooth multipoint splines.
  • GetSmoothSpline: Computes an array of IlvPoint for a smooth spline from a control point array.
  • PointInShape, RectBBox, DrawImage, AddClip, CreateTransformedShape: Utility methods that have different behaviors in JDK1.1.x and Java 2.

ilog.views.interactor.IlvMakeLinkInteractor

• The automatic creation of a self link when clicking in the background of the view is removed.
• New methods:
  • set/isSelfLinkAllowed: Allows or disallows the creation of a self link.

ilog.view.IlvLinkImage

The arrow size is now limited to the length of the line segment.

ilog.views.graphic.IlvArrowPolyline

The arrow size is now limited to the length of the line segment.

ilog.view.IlvLinkConnector

Link connectors can now be saved in an IVL file.

ilog.views.graphic.IlvIcon

• The IlvIcon can now be rotated when running under the Java 2 Platform.
• New methods:
  • get/setClip: Sets a clipping region on the IlvIcon.
  • set/getHighQualityRendering: Sets the rendering quality policy (Java 2 only).
  • getTransformer: Returns the transformer used to draw the icon.