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BetterImageSpan

docs/javadoc/reference/com/facebook/widget/text/span/BetterImageSpan.html

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Packages | Classes

Summary: Nested Classes | Constants | Ctors | Methods | Inherited Methods | [Expand All]

public class

BetterImageSpan

extends ReplacementSpan

| java.lang.Object | | ↳ | android.text.style.CharacterStyle | | | ↳ | android.text.style.MetricAffectingSpan | | | | ↳ | android.text.style.ReplacementSpan | | | | | ↳ | com.facebook.widget.text.span.BetterImageSpan |

| Known Direct Subclasses

DraweeSpan

| DraweeSpan | Span that contains a Drawee. |

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Class Overview

A better implementation of image spans that also supports centering images against the text.

In order to migrate from ImageSpan, replace new ImageSpan(drawable, alignment) with new BetterImageSpan(drawable, BetterImageSpan.normalizeAlignment(alignment)).

There are 2 main differences between BetterImageSpan and ImageSpan: 1. Pass in ALIGN_CENTER to center images against the text. 2. ALIGN_BOTTOM no longer unnecessarily increases the size of the text: DynamicDrawableSpan (ImageSpan's parent) adjusts sizes as if alignment was ALIGN_BASELINE which can lead to unnecessary whitespace.

Summary

Nested Classes
@interface
Constants
int
int
int
Public Constructors
Public Methods
void
Drawable
int
Returns the width of the image span and increases the height if font metrics are available.
final static int
A helper function to allow dropping in BetterImageSpan as a replacement to ImageSpan, and allowing for center alignment if passed in.
void

| [Expand] Inherited Methods | | --- | | From class android.text.style.ReplacementSpan

| abstract void | draw(Canvas arg0, CharSequence arg1, int arg2, int arg3, float arg4, int arg5, int arg6, int arg7, Paint arg8) | | abstract int | getSize(Paint arg0, CharSequence arg1, int arg2, int arg3, Paint.FontMetricsInt arg4) | | void | updateDrawState(TextPaint arg0) | | void | updateMeasureState(TextPaint arg0) |

| | From class android.text.style.MetricAffectingSpan

| CharacterStyle | getUnderlying() | | abstract void | updateMeasureState(TextPaint arg0) |

| | From class android.text.style.CharacterStyle

| CharacterStyle | getUnderlying() | | abstract void | updateDrawState(TextPaint arg0) | | static CharacterStyle | wrap(CharacterStyle arg0) |

| | From class java.lang.Object

| Object | clone() | | boolean | equals(Object arg0) | | void | finalize() | | final Class<?> | getClass() | | int | hashCode() | | final void | notify() | | final void | notifyAll() | | String | toString() | | final void | wait(long arg0, int arg1) | | final void | wait(long arg0) | | final void | wait() |

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Constants

public static final int ALIGN_BASELINE

Constant Value: 1 (0x00000001)

public static final int ALIGN_BOTTOM

Constant Value: 0 (0x00000000)

public static final int ALIGN_CENTER

Constant Value: 2 (0x00000002)

Public Constructors

public BetterImageSpan(Drawable drawable)

public BetterImageSpan(Drawable drawable, int verticalAlignment)

Public Methods

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

public Drawable getDrawable()

public int getSize(Paint paint, CharSequence text, int start, int end, Paint.FontMetricsInt fontMetrics)

Returns the width of the image span and increases the height if font metrics are available.

public static final int normalizeAlignment(int alignment)

A helper function to allow dropping in BetterImageSpan as a replacement to ImageSpan, and allowing for center alignment if passed in.

public void updateBounds()

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