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ReplacementSpan

public abstract class ReplacementSpan
extends MetricAffectingSpan

java.lang.Object
   ↳ android.text.style.CharacterStyle
     ↳ android.text.style.MetricAffectingSpan
       ↳ android.text.style.ReplacementSpan
Known Direct Subclasses
Known Indirect Subclasses


Summary

Public constructors

ReplacementSpan()

Public methods

abstract void draw(Canvas canvas, CharSequence text, int start, int end, float x, int top, int y, int bottom, Paint paint)

Draws the span into the canvas.

abstract int getSize(Paint paint, CharSequence text, int start, int end, Paint.FontMetricsInt fm)

Returns the width of the span.

void updateDrawState(TextPaint ds)

This method does nothing, since ReplacementSpans are drawn explicitly instead of affecting Paint properties.

void updateMeasureState(TextPaint p)

This method does nothing, since ReplacementSpans are measured explicitly instead of affecting Paint properties.

Inherited methods

From class android.text.style.MetricAffectingSpan
From class android.text.style.CharacterStyle
From class java.lang.Object

Public constructors

ReplacementSpan

Added in API level 1
ReplacementSpan ()

Public methods

draw

Added in API level 1
void draw (Canvas canvas, 
                CharSequence text, 
                int start, 
                int end, 
                float x, 
                int top, 
                int y, 
                int bottom, 
                Paint paint)

Draws the span into the canvas.

Parameters
canvas Canvas: Canvas into which the span should be rendered.
text CharSequence: Current text.
start int: Start character index for span.
end int: End character index for span.
x float: Edge of the replacement closest to the leading margin.
top int: Top of the line.
y int: Baseline.
bottom int: Bottom of the line.
paint Paint: Paint instance.

getSize

Added in API level 1
int getSize (Paint paint, 
                CharSequence text, 
                int start, 
                int end, 
                Paint.FontMetricsInt fm)

Returns the width of the span. Extending classes can set the height of the span by updating attributes of Paint.FontMetricsInt. If the span covers the whole text, and the height is not set, draw(Canvas, CharSequence, int, int, float, int, int, int, Paint) will not be called for the span.

Parameters
paint Paint: Paint instance.
text CharSequence: Current text.
start int: Start character index for span.
end int: End character index for span.
fm Paint.FontMetricsInt: Font metrics, can be null.
Returns
int Width of the span.

updateDrawState

Added in API level 1
void updateDrawState (TextPaint ds)

This method does nothing, since ReplacementSpans are drawn explicitly instead of affecting Paint properties.

Parameters
ds TextPaint

updateMeasureState

Added in API level 1
void updateMeasureState (TextPaint p)

This method does nothing, since ReplacementSpans are measured explicitly instead of affecting Paint properties.

Parameters
p TextPaint
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