Introduce glyph fonts to correct spacing.

app/src/main/java/org/thoughtcrime/securesms/fonts/SignalSymbols.kt

@@ -0,0 +1,80 @@
+/*
+ * Copyright 2024 Signal Messenger, LLC
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+package org.thoughtcrime.securesms.fonts
+
+import android.content.Context
+import android.graphics.Typeface
+import android.text.SpannableStringBuilder
+import android.text.TextPaint
+import android.text.style.MetricAffectingSpan
+
+/**
+ * Helper object for working with the SignalSymbols font
+ */
+object SignalSymbols {
+
+  enum class Glyph(val unicode: Char) {
+    CHEVRON_RIGHT('\uE025'),
+    PERSON_CIRCLE('\uE05E')
+  }
+
+  enum class Weight {
+    BOLD
+  }
+
+  private val cache = mutableMapOf<Weight, Typeface>()
+
+  fun getSpannedString(
+    context: Context,
+    weight: Weight,
+    glyph: Glyph
+  ): CharSequence {
+    val typeface = getTypeface(context, weight)
+    val span = CustomTypefaceSpan(typeface)
+
+    val text = SpannableStringBuilder(glyph.unicode.toString())
+    text.setSpan(span, 0, text.length, 0)
+
+    return text
+  }
+
+  private fun getTypeface(context: Context, weight: Weight): Typeface {
+    return when (weight) {
+      Weight.BOLD -> getBoldWeightedFont(context)
+      else -> error("Unsupported weight: $weight")
+    }
+  }
+
+  private fun getBoldWeightedFont(context: Context): Typeface {
+    return cache.getOrPut(
+      Weight.BOLD
+    ) {
+      Typeface.createFromAsset(
+        context.assets,
+        "fonts/SignalSymbols-Bold.otf"
+      )
+    }
+  }
+
+  /**
+   * Custom TypefaceSpan to support TypefaceSpan in API<28
+   *
+   * Source: https://www.youtube.com/watch?v=x-FcOX6ErdI&t=486s
+   */
+  private class CustomTypefaceSpan(val font: Typeface?) : MetricAffectingSpan() {
+    override fun updateMeasureState(textPaint: TextPaint) = update(textPaint)
+    override fun updateDrawState(textPaint: TextPaint?) = update(textPaint)
+
+    private fun update(tp: TextPaint?) {
+      tp.apply {
+        val old = this!!.typeface
+        val oldStyle = old?.style ?: 0
+        val font = Typeface.create(font, oldStyle)
+        typeface = font
+      }
+    }
+  }
+}