File	Doc	Category	Size	Date	Package
LineView.java	API Doc	Java SE 5 API	5218	Fri Aug 26 14:58:18 BST 2005	javax.swing.text.html

LineView

• java.lang.Object
  • javax.swing.text.View
    • javax.swing.text.CompositeView
      • javax.swing.text.BoxView
        • javax.swing.text.FlowView
          • javax.swing.text.ParagraphView
            • javax.swing.text.html.ParagraphView

Fields Summary
int	tabBase Last place painted at.

Constructors Summary
public LineView(Element elem) Creates a LineView object. param elem the element to wrap in a view super(elem);

Methods Summary
public float	getAlignment(int axis) Gets the alignment for an axis. param axis may be either X_AXIS or Y_AXIS return the alignment if (axis == View.X_AXIS) { return 0; } return super.getAlignment(axis);
protected int	getCharactersPerTab() return number of characters per tab, 8. return 8;
public float	getMinimumSpan(int axis) Determines the minimum span for this view along an axis. The preformatted line should refuse to be sized less than the preferred size. param axis may be either View.X_AXIS or View.Y_AXIS return the minimum span the view can be rendered into see View#getPreferredSpan return getPreferredSpan(axis);
protected float	getPreTab(float x, int tabOffset) Returns the location for the tab. Document d = getDocument(); View v = getViewAtPosition(tabOffset, null); if ((d instanceof StyledDocument) && v != null) { // Assume f is fixed point. Font f = ((StyledDocument)d).getFont(v.getAttributes()); Container c = getContainer(); FontMetrics fm = (c != null) ? c.getFontMetrics(f) : Toolkit.getDefaultToolkit().getFontMetrics(f); int width = getCharactersPerTab() * fm.charWidth('W"); int tb = (int)getTabBase(); return (float)((((int)x - tb) / width + 1) * width + tb); } return 10.0f + x;
public int	getResizeWeight(int axis) Gets the resize weight for the specified axis. param axis may be either X_AXIS or Y_AXIS return the weight switch (axis) { case View.X_AXIS: return 1; case View.Y_AXIS: return 0; default: throw new IllegalArgumentException("Invalid axis: " + axis); }
public boolean	isVisible() Preformatted lines are not suppressed if they have only whitespace, so they are always visible. return true;
protected void	layout(int width, int height) Lays out the children. If the layout span has changed, the rows are rebuilt. The superclass functionality is called after checking and possibly rebuilding the rows. If the height has changed, the preferenceChanged method is called on the parent since the vertical preference is rigid. param width the width to lay out against >= 0. This is the width inside of the inset area. param height the height to lay out against >= 0 (not used by paragraph, but used by the superclass). This is the height inside of the inset area. super.layout(Integer.MAX_VALUE - 1, height);
public float	nextTabStop(float x, int tabOffset) Returns the next tab stop position given a reference position. This view implements the tab coordinate system, and calls getTabbedSpan on the logical children in the process of layout to determine the desired span of the children. The logical children can delegate their tab expansion upward to the paragraph which knows how to expand tabs. LabelView is an example of a view that delegates its tab expansion needs upward to the paragraph. This is implemented to try and locate a TabSet in the paragraph element's attribute set. If one can be found, its settings will be used, otherwise a default expansion will be provided. The base location for for tab expansion is the left inset from the paragraphs most recent allocation (which is what the layout of the children is based upon). param x the X reference position param tabOffset the position within the text stream that the tab occurred at >= 0. return the trailing end of the tab expansion >= 0 see TabSet see TabStop see LabelView // If the text isn't left justified, offset by 10 pixels! if (getTabSet() == null && StyleConstants.getAlignment(getAttributes()) == StyleConstants.ALIGN_LEFT) { return getPreTab(x, tabOffset); } return super.nextTabStop(x, tabOffset);