LineMetrics (Java Platform SE 7 b138)

java.lang.Object
- java.awt.font.LineMetrics

```
public abstract class LineMetrics
extends Object
```
The LineMetrics class allows access to the metrics needed to layout characters along a line and to layout of a set of lines. A LineMetrics object encapsulates the measurement information associated with a run of text.
Fonts can have different metrics for different ranges of characters. The getLineMetrics methods of Font take some text as an argument and return a LineMetrics object describing the metrics of the initial number of characters in that text, as returned by getNumChars().

Constructor Summary

Constructors
Constructor and Description

LineMetrics()

Constructors
Constructor and Description
`LineMetrics()`

Method Summary

Methods
Modifier and Type	Method and Description
`abstract float`	`getAscent()` Returns the ascent of the text.
`abstract int`	`getBaselineIndex()` Returns the baseline index of the text.
`abstract float[]`	`getBaselineOffsets()` Returns the baseline offsets of the text, relative to the baseline of the text.
`abstract float`	`getDescent()` Returns the descent of the text.
`abstract float`	`getHeight()` Returns the height of the text.
`abstract float`	`getLeading()` Returns the leading of the text.
`abstract int`	`getNumChars()` Returns the number of characters (`char` values) in the text whose metrics are encapsulated by this `LineMetrics` object.
`abstract float`	`getStrikethroughOffset()` Returns the position of the strike-through line relative to the baseline.
`abstract float`	`getStrikethroughThickness()` Returns the thickness of the strike-through line.
`abstract float`	`getUnderlineOffset()` Returns the position of the underline relative to the baseline.
`abstract float`	`getUnderlineThickness()` Returns the thickness of the underline.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - LineMetrics
```
public LineMetrics()
```
- Method Detail
  - getNumChars
```
public abstract int getNumChars()
```
    Returns the number of characters (char values) in the text whose metrics are encapsulated by this LineMetrics object.
    
    Returns:
    the number of characters (char values) in the text with which this LineMetrics was created.
  - getAscent
```
public abstract float getAscent()
```
    Returns the ascent of the text. The ascent is the distance from the baseline to the ascender line. The ascent usually represents the the height of the capital letters of the text. Some characters can extend above the ascender line.
    
    Returns:
    the ascent of the text.
  - getDescent
```
public abstract float getDescent()
```
    Returns the descent of the text. The descent is the distance from the baseline to the descender line. The descent usually represents the distance to the bottom of lower case letters like 'p'. Some characters can extend below the descender line.
    
    Returns:
    the descent of the text.
  - getLeading
```
public abstract float getLeading()
```
    Returns the leading of the text. The leading is the recommended distance from the bottom of the descender line to the top of the next line.
    
    Returns:
    the leading of the text.
  - getHeight
```
public abstract float getHeight()
```
    Returns the height of the text. The height is equal to the sum of the ascent, the descent and the leading.
    
    Returns:
    the height of the text.
  - getBaselineIndex
```
public abstract int getBaselineIndex()
```
    Returns the baseline index of the text. The index is one of ROMAN_BASELINE, CENTER_BASELINE, HANGING_BASELINE.
    
    Returns:
    the baseline of the text.
  - getBaselineOffsets
```
public abstract float[] getBaselineOffsets()
```
    Returns the baseline offsets of the text, relative to the baseline of the text. The offsets are indexed by baseline index. For example, if the baseline index is CENTER_BASELINE then offsets[HANGING_BASELINE] is usually negative, offsets[CENTER_BASELINE] is zero, and offsets[ROMAN_BASELINE] is usually positive.
    
    Returns:
    the baseline offsets of the text.
  - getStrikethroughOffset
```
public abstract float getStrikethroughOffset()
```
    Returns the position of the strike-through line relative to the baseline.
    
    Returns:
    the position of the strike-through line.
  - getStrikethroughThickness
```
public abstract float getStrikethroughThickness()
```
    Returns the thickness of the strike-through line.
    
    Returns:
    the thickness of the strike-through line.
  - getUnderlineOffset
```
public abstract float getUnderlineOffset()
```
    Returns the position of the underline relative to the baseline.
    
    Returns:
    the position of the underline.
  - getUnderlineThickness
```
public abstract float getUnderlineThickness()
```
    Returns the thickness of the underline.
    
    Returns:
    the thickness of the underline.

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For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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DRAFT ea-b138

Class LineMetrics

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

LineMetrics

Method Detail

getNumChars

getAscent

getDescent

getLeading

getHeight

getBaselineIndex

getBaselineOffsets

getStrikethroughOffset

getStrikethroughThickness

getUnderlineOffset

getUnderlineThickness