Module java.desktop

Package javax.swing.text

Class GlyphView

java.lang.Object

javax.swing.text.View

javax.swing.text.GlyphView

All Implemented Interfaces:

Cloneable, SwingConstants, TabableView

Direct Known Subclasses:

LabelView

public class GlyphView
extends View
implements TabableView, Cloneable

A GlyphView is a styled chunk of text that represents a view mapped over an element in the text model. This view is generally responsible for displaying text glyphs using character level attributes in some way. An implementation of the GlyphPainter class is used to do the actual rendering and model/view translations. This separates rendering from layout and management of the association with the model.

The view supports breaking for the purpose of formatting. The fragments produced by breaking share the view that has primary responsibility for the element (i.e. they are nested classes and carry only a small amount of state of their own) so they can share its resources.

Since this view represents text that may have tabs embedded in it, it implements the TabableView interface. Tabs will only be expanded if this view is embedded in a container that does tab expansion. ParagraphView is an example of a container that does tab expansion.

Since:

1.3

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	GlyphView.GlyphPainter	A class to perform rendering of the glyphs.

Field Summary

Fields declared in class javax.swing.text.View

BadBreakWeight, ExcellentBreakWeight, ForcedBreakWeight, GoodBreakWeight, X_AXIS, Y_AXIS

Fields declared in interface javax.swing.SwingConstants

BOTTOM, CENTER, EAST, HORIZONTAL, LEADING, LEFT, NEXT, NORTH, NORTH_EAST, NORTH_WEST, PREVIOUS, RIGHT, SOUTH, SOUTH_EAST, SOUTH_WEST, TOP, TRAILING, VERTICAL, WEST

Constructor Summary

Constructors

Constructor	Description
GlyphView(Element elem)	Constructs a new view wrapped on an element.

Method Summary

Modifier and Type	Method	Description
View	breakView(int axis, int p0, float pos, float len)	Breaks this view on the given axis at the given length.
void	changedUpdate(DocumentEvent e, Shape a, ViewFactory f)	Gives notification from the document that attributes were changed in a location that this view is responsible for.
protected void	checkPainter()	Check to see that a glyph painter exists.
protected Object	clone()	Creates a shallow copy.
View	createFragment(int p0, int p1)	Creates a view that represents a portion of the element.
float	getAlignment(int axis)	Determines the desired alignment for this view along an axis.
Color	getBackground()	Fetch the background color to use to render the glyphs.
int	getBreakWeight(int axis, float pos, float len)	Determines how attractive a break opportunity in this view is.
int	getEndOffset()	Fetches the portion of the model that this view is responsible for.
Font	getFont()	Fetch the font that the glyphs should be based upon.
Color	getForeground()	Fetch the foreground color to use to render the glyphs.
GlyphView.GlyphPainter	getGlyphPainter()	Fetch the currently installed glyph painter.
float	getMinimumSpan(int axis)	Determines the minimum span for this view along an axis.
int	getNextVisualPositionFrom(int pos, Position.Bias b, Shape a, int direction, Position.Bias[] biasRet)	Provides a way to determine the next visually represented model location that one might place a caret.
float	getPartialSpan(int p0, int p1)	Determines the span along the same axis as tab expansion for a portion of the view.
float	getPreferredSpan(int axis)	Determines the preferred span for this view along an axis.
int	getStartOffset()	Fetches the portion of the model that this view is responsible for.
float	getTabbedSpan(float x, TabExpander e)	Determines the desired span when using the given tab expansion implementation.
TabExpander	getTabExpander()	Fetch the TabExpander to use if tabs are present in this view.
Segment	getText(int p0, int p1)	Fetch a reference to the text that occupies the given range.
void	insertUpdate(DocumentEvent e, Shape a, ViewFactory f)	Gives notification that something was inserted into the document in a location that this view is responsible for.
boolean	isStrikeThrough()	Determine if the glyphs should have a strikethrough line.
boolean	isSubscript()	Determine if the glyphs should be rendered as superscript.
boolean	isSuperscript()	Determine if the glyphs should be rendered as subscript.
boolean	isUnderline()	Determine if the glyphs should be underlined.
Shape	modelToView(int pos, Shape a, Position.Bias b)	Provides a mapping from the document model coordinate space to the coordinate space of the view mapped to it.
void	paint(Graphics g, Shape a)	Renders a portion of a text style run.
void	removeUpdate(DocumentEvent e, Shape a, ViewFactory f)	Gives notification that something was removed from the document in a location that this view is responsible for.
void	setGlyphPainter(GlyphView.GlyphPainter p)	Sets the painter to use for rendering glyphs.
int	viewToModel(float x, float y, Shape a, Position.Bias[] biasReturn)	Provides a mapping from the view coordinate space to the logical coordinate space of the model.

Methods declared in class javax.swing.text.View

append, forwardUpdate, forwardUpdateToView, getAttributes, getChildAllocation, getContainer, getDocument, getElement, getGraphics, getMaximumSpan, getParent, getResizeWeight, getToolTipText, getView, getViewCount, getViewFactory, getViewIndex, getViewIndex, insert, isVisible, modelToView, modelToView, preferenceChanged, remove, removeAll, replace,