Created
January 21, 2022 05:14
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class FontAwareTextAppearanceSpan( | |
private val context: Context, | |
private val appearance: Int | |
) : TextAppearanceSpan(context, appearance) { | |
private var font: Typeface? = null | |
override fun updateMeasureState(ds: TextPaint) { | |
super.updateMeasureState(ds) | |
val font = getFont() ?: Typeface.DEFAULT | |
val oldStyle = ds.typeface?.style ?: 0 | |
ds.typeface = Typeface.create(font, oldStyle) | |
} | |
private fun getFont(): Typeface? { | |
if (font != null) { | |
return font | |
} | |
val cleanFamilyName = getFontFamilyName() ?: return null | |
val appPackageName = context.applicationContext.packageName | |
val id = context.resources.getIdentifier(cleanFamilyName, "font", appPackageName) | |
return getFont(context, id).also { font = it } | |
} | |
private fun getFontFamilyName(): String? { | |
val attrs = intArrayOf(R.attr.fontFamilyName) | |
val a = context.obtainStyledAttributes(appearance, attrs) | |
val fontFamilyName = a.getString(0) | |
a.recycle() | |
return fontFamilyName | |
} | |
} |
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