edu.umd.cs.piccolox.swing
Class PScrollPaneLayout

java.lang.Object
  javax.swing.ScrollPaneLayout
      edu.umd.cs.piccolox.swing.PScrollPaneLayout

All Implemented Interfaces:

java.awt.LayoutManager, java.io.Serializable, javax.swing.ScrollPaneConstants

Direct Known Subclasses:

PScrollPaneLayout.UIResource

public class PScrollPaneLayout
extends javax.swing.ScrollPaneLayout

A subclass of ScrollPaneLayout that looks at the Viewport for sizing information rather than View. Also queries the Viewport for sizing information after each decision about scrollbar visiblity.

Author:

Lance Good

See Also:

Serialized Form

Nested Class Summary

static class

PScrollPaneLayout.UIResource The UI resource version of PScrollPaneLayout.

Field Summary

Fields inherited from class javax.swing.ScrollPaneLayout

colHead, hsb, hsbPolicy, lowerLeft, lowerRight, rowHead, upperLeft, upperRight, viewport, vsb, vsbPolicy

Fields inherited from interface javax.swing.ScrollPaneConstants

COLUMN_HEADER, HORIZONTAL_SCROLLBAR, HORIZONTAL_SCROLLBAR_ALWAYS, HORIZONTAL_SCROLLBAR_AS_NEEDED, HORIZONTAL_SCROLLBAR_NEVER, HORIZONTAL_SCROLLBAR_POLICY, LOWER_LEADING_CORNER, LOWER_LEFT_CORNER, LOWER_RIGHT_CORNER, LOWER_TRAILING_CORNER, ROW_HEADER, UPPER_LEADING_CORNER, UPPER_LEFT_CORNER, UPPER_RIGHT_CORNER, UPPER_TRAILING_CORNER, VERTICAL_SCROLLBAR, VERTICAL_SCROLLBAR_ALWAYS, VERTICAL_SCROLLBAR_AS_NEEDED, VERTICAL_SCROLLBAR_NEVER, VERTICAL_SCROLLBAR_POLICY, VIEWPORT

Constructor Summary

PScrollPaneLayout()

Method Summary

protected void	adjustForHSB(boolean wantsHSB, java.awt.Rectangle available, java.awt.Rectangle hsbR, java.awt.Insets vpbInsets) Copied FROM javax.swing.ScrollPaneLayout.adjustForHSB.
protected void	adjustForVSB(boolean wantsVSB, java.awt.Rectangle available, java.awt.Rectangle vsbR, java.awt.Insets vpbInsets, boolean leftToRight) Copied FROM javax.swing.ScrollPaneLayout.adjustForVSB.
void	layoutContainer(java.awt.Container parent) MODIFIED FROM javax.swing.ScrollPaneLayout.layoutContainer.

Methods inherited from class javax.swing.ScrollPaneLayout

addLayoutComponent, addSingletonComponent, getColumnHeader, getCorner, getHorizontalScrollBar, getHorizontalScrollBarPolicy, getRowHeader, getVerticalScrollBar, getVerticalScrollBarPolicy, getViewport, getViewportBorderBounds, minimumLayoutSize, preferredLayoutSize, removeLayoutComponent, setHorizontalScrollBarPolicy, setVerticalScrollBarPolicy, syncWithScrollPane

Methods inherited from class java.lang.Object

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

Constructor Detail

PScrollPaneLayout

public PScrollPaneLayout()

Method Detail

layoutContainer

public void layoutContainer(java.awt.Container parent)

MODIFIED FROM javax.swing.ScrollPaneLayout.layoutContainer. This is largely the same as ScrollPaneLayout.layoutContainer but obtains the preferred view size from the viewport rather than directly from the view so the viewport can get the preferred size from the PScrollDirector

Specified by:

layoutContainer in interface java.awt.LayoutManager

Overrides:

layoutContainer in class javax.swing.ScrollPaneLayout

Parameters:

parent - the Container to lay out

adjustForVSB

protected void adjustForVSB(boolean wantsVSB,
                            java.awt.Rectangle available,
                            java.awt.Rectangle vsbR,
                            java.awt.Insets vpbInsets,
                            boolean leftToRight)

Copied FROM javax.swing.ScrollPaneLayout.adjustForVSB. This method is called from ScrollPaneLayout.layoutContainer and is private in ScrollPaneLayout so it was copied here

Parameters:

wantsVSB - whether to account for vertical scrollbar

available - region to adjust

vsbR - vertical scroll bar region

vpbInsets - margin of vertical scroll bars

leftToRight - orientation of the text LTR or RTL

adjustForHSB

protected void adjustForHSB(boolean wantsHSB,
                            java.awt.Rectangle available,
                            java.awt.Rectangle hsbR,
                            java.awt.Insets vpbInsets)

Copied FROM javax.swing.ScrollPaneLayout.adjustForHSB. This method is called from ScrollPaneLayout.layoutContainer and is private in ScrollPaneLayout so it was copied here

Parameters:

wantsHSB - whether to account for horizontal scrollbar

available - region to adjust

hsbR - vertical scroll bar region

vpbInsets - margin of the scroll bars