Paint.FontMetrics
public
static
class
Paint.FontMetrics
extends Object
java.lang.Object | |
↳ | android.graphics.Paint.FontMetrics |
Class that describes the various metrics for a font at a given text size. Remember, Y values increase going down, so those values will be positive, and values that measure distances going up will be negative. This class is returned by getFontMetrics().
Summary
Fields | |
---|---|
public
float |
ascent
The recommended distance above the baseline for singled spaced text. |
public
float |
bottom
The maximum distance below the baseline for the lowest glyph in the font at a given text size. |
public
float |
descent
The recommended distance below the baseline for singled spaced text. |
public
float |
leading
The recommended additional space to add between lines of text. |
public
float |
top
The maximum distance above the baseline for the tallest glyph in the font at a given text size. |
Public constructors | |
---|---|
FontMetrics()
|
Public methods | |
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boolean
|
equals(Object o)
Indicates whether some other object is "equal to" this one. |
int
|
hashCode()
Returns a hash code value for the object. |
String
|
toString()
Returns a string representation of the object. |
Inherited methods | |
---|---|
Fields
ascent
public float ascent
The recommended distance above the baseline for singled spaced text.
bottom
public float bottom
The maximum distance below the baseline for the lowest glyph in the font at a given text size.
descent
public float descent
The recommended distance below the baseline for singled spaced text.
leading
public float leading
The recommended additional space to add between lines of text.
top
public float top
The maximum distance above the baseline for the tallest glyph in the font at a given text size.
Public constructors
FontMetrics
public FontMetrics ()
Public methods
equals
public boolean equals (Object o)
Indicates whether some other object is "equal to" this one.
The equals
method implements an equivalence relation
on non-null object references:
- It is reflexive: for any non-null reference value
x
,x.equals(x)
should returntrue
. - It is symmetric: for any non-null reference values
x
andy
,x.equals(y)
should returntrue
if and only ify.equals(x)
returnstrue
. - It is transitive: for any non-null reference values
x
,y
, andz
, ifx.equals(y)
returnstrue
andy.equals(z)
returnstrue
, thenx.equals(z)
should returntrue
. - It is consistent: for any non-null reference values
x
andy
, multiple invocations ofx.equals(y)
consistently returntrue
or consistently returnfalse
, provided no information used inequals
comparisons on the objects is modified. - For any non-null reference value
x
,x.equals(null)
should returnfalse
.
An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.
Parameters | |
---|---|
o |
Object : the reference object with which to compare. |
Returns | |
---|---|
boolean |
true if this object is the same as the obj
argument; false otherwise. |
hashCode
public int hashCode ()
Returns a hash code value for the object. This method is
supported for the benefit of hash tables such as those provided by
HashMap
.
The general contract of hashCode
is:
- Whenever it is invoked on the same object more than once during
an execution of a Java application, the
hashCode
method must consistently return the same integer, provided no information used inequals
comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application. - If two objects are equal according to the
equals
method, then calling thehashCode
method on each of the two objects must produce the same integer result. - It is not required that if two objects are unequal
according to the
equals
method, then calling thehashCode
method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.
Returns | |
---|---|
int |
a hash code value for this object. |
toString
public String toString ()
Returns a string representation of the object.
Returns | |
---|---|
String |
a string representation of the object. |