com.xuexiang.xui.widget.textview.span

Class AlignMiddleImageSpan

java.lang.Object

android.text.style.CharacterStyle

android.text.style.MetricAffectingSpan

android.text.style.ReplacementSpan

android.text.style.DynamicDrawableSpan

android.text.style.ImageSpan

com.xuexiang.xui.widget.textview.span.AlignMiddleImageSpan

All Implemented Interfaces:

android.text.style.UpdateAppearance, android.text.style.UpdateLayout

Direct Known Subclasses:

MarginImageSpan

public class AlignMiddleImageSpan
extends android.text.style.ImageSpan

支持垂直居中的ImageSpan

Since:

2019/4/2 下午9:33

Author:

xuexiang

Field Summary

Fields

Modifier and Type	Field and Description
static int	ALIGN_MIDDLE 不要和父类重复

Fields inherited from class android.text.style.DynamicDrawableSpan

ALIGN_BASELINE, ALIGN_BOTTOM, mVerticalAlignment

Constructor Summary

Constructors

Constructor and Description
AlignMiddleImageSpan(android.graphics.drawable.Drawable d, int verticalAlignment)
AlignMiddleImageSpan(android.graphics.drawable.Drawable d, int verticalAlignment, float fontWidthMultiple)

Method Summary

Modifier and Type	Method and Description
void	draw(android.graphics.Canvas canvas, java.lang.CharSequence text, int start, int end, float x, int top, int y, int bottom, android.graphics.Paint paint)
int	getSize(android.graphics.Paint paint, java.lang.CharSequence text, int start, int end, android.graphics.Paint.FontMetricsInt fm)
void	setAvoidSuperChangeFontMetrics(boolean avoidSuperChangeFontMetrics) 是否避免父类修改FontMetrics，如果为 false 则会走父类的逻辑, 会导致FontMetrics被更改

Methods inherited from class android.text.style.ImageSpan

getDrawable, getSource

Methods inherited from class android.text.style.DynamicDrawableSpan

getVerticalAlignment

Methods inherited from class android.text.style.ReplacementSpan

updateDrawState, updateMeasureState

Methods inherited from class android.text.style.MetricAffectingSpan

getUnderlying

Methods inherited from class android.text.style.CharacterStyle

wrap

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

ALIGN_MIDDLE

public static final int ALIGN_MIDDLE

不要和父类重复

See Also:

Constant Field Values

Constructor Detail

AlignMiddleImageSpan

public AlignMiddleImageSpan(android.graphics.drawable.Drawable d,
                            int verticalAlignment)

Parameters:

d - 作为 span 的 Drawable

verticalAlignment - 垂直对齐方式, 如果要垂直居中, 则使用 ALIGN_MIDDLE

AlignMiddleImageSpan

public AlignMiddleImageSpan(android.graphics.drawable.Drawable d,
                            int verticalAlignment,
                            float fontWidthMultiple)

Parameters:

d - 作为 span 的 Drawable

verticalAlignment - 垂直对齐方式, 如果要垂直居中, 则使用 ALIGN_MIDDLE

fontWidthMultiple - 设置这个Span占几个中文字的宽度, 当该值 > 0 时, span 的宽度为该值*一个中文字的宽度; 当该值 <= 0 时, span 的宽度由 mAvoidSuperChangeFontMetrics 决定

Method Detail

getSize

public int getSize(android.graphics.Paint paint,
                   java.lang.CharSequence text,
                   int start,
                   int end,
                   android.graphics.Paint.FontMetricsInt fm)

Overrides:

getSize in class android.text.style.DynamicDrawableSpan

draw

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

Overrides:

draw in class android.text.style.DynamicDrawableSpan

setAvoidSuperChangeFontMetrics

public void setAvoidSuperChangeFontMetrics(boolean avoidSuperChangeFontMetrics)

是否避免父类修改FontMetrics，如果为 false 则会走父类的逻辑, 会导致FontMetrics被更改