Java Reference
In-Depth Information
public static void setLineSpacing(MutableAttributeSet a, float i);
public static void setRightIndent(MutableAttributeSet a, float i);
public static void setSpaceAbove(MutableAttributeSet a, float i);
public static void setSpaceBelow(MutableAttributeSet a, float i);
public static void setStrikeThrough(MutableAttributeSet a, boolean b);
public static void setSubscript(MutableAttributeSet a, boolean b);
public static void setSuperscript(MutableAttributeSet a, boolean b);
public static void setTabSet(MutableAttributeSet a, TabSet tabs);
public static void setUnderline(MutableAttributeSet a, boolean b);
For instance, instead of calling the following to make the
SimpleAttributeSet
both bold
and italic:
attributes.addAttribute(StyleConstants.CharacterConstants.Bold, Boolean.TRUE)
attributes.addAttribute(StyleConstants.CharacterConstants.Italic, Boolean.TRUE)
you could use the following:
StyleConstants.setBold(attributes, true);
StyleConstants.setItalic(attributes, true);
As you can see, the latter form is much more readable and easier to maintain!
■
Tip
Besides methods to change
AttributeSet
objects, the
StyleConstants
class provides many
other methods that let you check the status of an
AttributeSet
to see if a setting is currently enabled
or disabled.
TabStop and TabSet Classes
One of the key constants for storing
AttributeSet
values is the
ParagraphConstants.TabSet
attribute. The
TabSet
class represents a collection of
TabStop
objects, each defining a tab position,
alignment, and leader. If you wanted to define your own tab stops for a
JTextPane
, you could
create a set of
TabStop
objects, one for each tab stop, create the
TabSet
, and then associate the
TabSet
with a
MutableAttributeSet
.
Creating a TabStop
The
TabStop
class isn't a JavaBean component in the typical sense; it does not have a no-argument
constructor. Instead, you must specify the position, in pixels, at which to place the tab stop.
It has two constructors:
public TabStop(float position)
TabStop stop = new TabStop(40);
public TabStop(float position, int align, int leader)
TabStop stop = new TabStop(40, TabStop.ALIGN_DECIMAL, TabStop.LEAD_DOTS);
