CustomTypefaceSpan.kt

package com.mabnadp.rahavard365.utils

import android.graphics.Paint
import android.graphics.Typeface
import android.text.TextPaint
import android.text.style.TypefaceSpan


class CustomTypefaceSpan(private val newType: Typeface) : TypefaceSpan(null) {
  override fun updateDrawState(ds: TextPaint) {
    applyCustomTypeFace(ds, newType)
  }

  override fun updateMeasureState(paint: TextPaint) {
    applyCustomTypeFace(paint, newType)
  }

  private fun applyCustomTypeFace(paint: Paint, tf: Typeface) {
    val oldStyle: Int
    val old = paint.typeface
    oldStyle = old?.style ?: 0
    val fake = oldStyle and tf.style.inv()
    if (fake and Typeface.BOLD != 0) {
      paint.isFakeBoldText = true
    }
    if (fake and Typeface.ITALIC != 0) {
      paint.textSkewX = -0.25f
    }
    paint.typeface = tf
  }
}