Cloneable
, SwingConstants
, TabableView
InlineView
public class LabelView extends GlyphView implements TabableView
LabelView
is a styled chunk of text that represents a view mapped over an element in the text model. It caches the character level attributes used for rendering.GlyphView.GlyphPainter
BadBreakWeight, ExcellentBreakWeight, ForcedBreakWeight, GoodBreakWeight, X_AXIS, Y_AXIS
BOTTOM, CENTER, EAST, HORIZONTAL, LEADING, LEFT, NEXT, NORTH, NORTH_EAST, NORTH_WEST, PREVIOUS, RIGHT, SOUTH, SOUTH_EAST, SOUTH_WEST, TOP, TRAILING, VERTICAL, WEST
Constructor | Description |
---|---|
LabelView |
Constructs a new view wrapped on an element. |
Modifier and Type | Method | Description |
---|---|---|
void |
changedUpdate |
Gives notification from the document that attributes were changed in a location that this view is responsible for. |
Color |
getBackground() |
Fetches the background color to use to render the glyphs. |
Font |
getFont() |
Fetches the font that the glyphs should be based upon. |
protected FontMetrics |
getFontMetrics() |
Deprecated. FontMetrics are not used for glyph rendering when running in the JDK. |
Color |
getForeground() |
Fetches the foreground color to use to render the glyphs. |
boolean |
isStrikeThrough() |
Determines if the glyphs should have a strikethrough line. |
boolean |
isSubscript() |
Determines if the glyphs should be rendered as superscript. |
boolean |
isSuperscript() |
Determines if the glyphs should be rendered as subscript. |
boolean |
isUnderline() |
Determines if the glyphs should be underlined. |
protected void |
setBackground |
Sets the background color for the view. |
protected void |
setPropertiesFromAttributes() |
Sets the cached properties from the attributes. |
protected void |
setStrikeThrough |
Sets whether or not the view has a strike/line through it. |
protected void |
setSubscript |
Sets whether or not the view represents a subscript. |
protected void |
setSuperscript |
Sets whether or not the view represents a superscript. |
protected void |
setUnderline |
Sets whether or not the view is underlined. |
breakView, checkPainter, clone, createFragment, getAlignment, getBreakWeight, getEndOffset, getGlyphPainter, getMinimumSpan, getNextVisualPositionFrom, getPartialSpan, getPreferredSpan, getStartOffset, getTabbedSpan, getTabExpander, getText, insertUpdate, modelToView, paint, removeUpdate, setGlyphPainter, viewToModel
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, setParent, setSize, updateChildren, updateLayout, viewToModel
equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
getPartialSpan, getTabbedSpan
public LabelView(Element elem)
elem
- the elementprotected void setUnderline(boolean u)
u
- true if the view is underlined, otherwise falseprotected void setStrikeThrough(boolean s)
s
- true if the view has a strike/line through it, otherwise falseprotected void setSuperscript(boolean s)
s
- true if the view represents a superscript, otherwise falseprotected void setSubscript(boolean s)
s
- true if the view represents a subscript, otherwise falseprotected void setBackground(Color bg)
View
. If you need to customize the background color you should override setPropertiesFromAttributes
and invoke this method. A value of null indicates no background should be rendered, so that the background of the parent View
will show through.bg
- background color, or nullprotected void setPropertiesFromAttributes()
@Deprecated protected FontMetrics getFontMetrics()
FontMetrics
used for this view.FontMetrics
used for this viewpublic Color getBackground()
null
.getBackground
in class GlyphView
public Color getForeground()
null
.getForeground
in class GlyphView
public Font getFont()
public boolean isUnderline()
When you request this property, LabelView
re-syncs its state with the properties of the Element
's AttributeSet
. If Element
's AttributeSet
does not have this property set, it will revert to false.
isUnderline
in class GlyphView
underline
propertypublic boolean isStrikeThrough()
strikeThrough
property. When you request this property, LabelView
re-syncs its state with the properties of the Element
's AttributeSet
. If Element
's AttributeSet
does not have this property set, it will revert to false.
isStrikeThrough
in class GlyphView
strikeThrough
propertypublic boolean isSubscript()
When you request this property, LabelView
re-syncs its state with the properties of the Element
's AttributeSet
. If Element
's AttributeSet
does not have this property set, it will revert to false.
isSubscript
in class GlyphView
subscript
propertypublic boolean isSuperscript()
When you request this property, LabelView
re-syncs its state with the properties of the Element
's AttributeSet
. If Element
's AttributeSet
does not have this property set, it will revert to false.
isSuperscript
in class GlyphView
superscript
propertypublic void changedUpdate(DocumentEvent e, Shape a, ViewFactory f)
changedUpdate
in class GlyphView
e
- the change information from the associated documenta
- the current allocation of the viewf
- the factory to use to rebuild if the view has children
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Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Various third party code in OpenJDK is licensed under different licenses (see Debian package).
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https://docs.oracle.com/en/java/javase/21/docs/api/java.desktop/javax/swing/text/LabelView.html