enlarge font size when text is only a few emojis

2026-07-03 14:05:24 +02:00 · 2024-11-05 23:04:25 +01:00
parent 2e77db23d5
commit dd75a8e858
3 changed files with 67 additions and 2 deletions
@@ -0,0 +1,65 @@
+package org.thoughtcrime.securesms.components.emoji;
+
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.util.AttributeSet;
+import android.util.TypedValue;
+
+import androidx.annotation.Nullable;
+import androidx.appcompat.widget.AppCompatTextView;
+
+import net.fellbaum.jemoji.Emoji;
+import net.fellbaum.jemoji.EmojiManager;
+
+import java.util.List;
+
+
+public class AutoScaledEmojiTextView extends AppCompatTextView {
+
+  private float originalFontSize;
+
+  public AutoScaledEmojiTextView(Context context) {
+    this(context, null);
+  }
+
+  public AutoScaledEmojiTextView(Context context, AttributeSet attrs) {
+    this(context, attrs, 0);
+  }
+
+  public AutoScaledEmojiTextView(Context context, AttributeSet attrs, int defStyleAttr) {
+    super(context, attrs, defStyleAttr);
+    TypedArray typedArray = context.obtainStyledAttributes(attrs, new int[]{android.R.attr.textSize});
+    originalFontSize = typedArray.getDimensionPixelSize(0, 0);
+    typedArray.recycle();
+  }
+
+  @Override
+  public void setText(@Nullable CharSequence text, BufferType type) {
+    float scale = getTextScale(text);
+    super.setTextSize(TypedValue.COMPLEX_UNIT_PX, originalFontSize * scale);
+    super.setText(text, type);
+  }
+
+  private float getTextScale(CharSequence text) {
+    if (text.length() > 16) {
+      return 1;
+    }
+    List<Emoji> emojis = EmojiManager.extractEmojisInOrder(text.toString());
+    int emojiCount = emojis.size();
+    if (emojiCount <= 8) {
+      int charCount = text.length();
+      for (Emoji emoji : emojis) {
+        charCount -= emoji.getEmoji().length();
+      }
+      if (charCount == 0) { // only emojis in text
+        float scale = 1.25f;
+        if (emojiCount <= 6) scale += 0.25f;
+        if (emojiCount <= 4) scale += 0.25f;
+        if (emojiCount <= 2) scale += 0.25f;
+        return scale;
+      }
+    }
+    return 1;
+  }
+
+}