Adjust sizing of default group icon in chat settings.

app/src/main/java/org/thoughtcrime/securesms/contacts/avatars/FallbackPhoto.java

@@ -0,0 +1,65 @@
+package org.thoughtcrime.securesms.contacts.avatars;
+
+import android.content.Context;
+import android.graphics.drawable.Drawable;
+import android.graphics.drawable.LayerDrawable;
+
+import androidx.annotation.DrawableRes;
+import androidx.annotation.NonNull;
+import androidx.annotation.Px;
+import androidx.appcompat.content.res.AppCompatResources;
+import androidx.core.graphics.drawable.DrawableCompat;
+
+import org.thoughtcrime.securesms.R;
+import org.thoughtcrime.securesms.avatar.Avatars;
+import org.thoughtcrime.securesms.conversation.colors.AvatarColor;
+import org.thoughtcrime.securesms.util.ViewUtil;
+
+import java.util.Objects;
+
+/**
+ * Fallback resource based contact photo with a 20dp icon
+ */
+public final class FallbackPhoto implements FallbackContactPhoto {
+
+  @DrawableRes private final int drawableResource;
+  @Px          private final int foregroundInset;
+
+  public FallbackPhoto(@DrawableRes int drawableResource, @Px int foregroundInset) {
+    this.drawableResource = drawableResource;
+    this.foregroundInset  = foregroundInset;
+  }
+
+  @Override
+  public Drawable asDrawable(@NonNull Context context, @NonNull AvatarColor color) {
+    return buildDrawable(context, color);
+  }
+
+  @Override
+  public Drawable asDrawable(@NonNull Context context, @NonNull AvatarColor color, boolean inverted) {
+    return buildDrawable(context, color);
+  }
+
+  @Override
+  public Drawable asSmallDrawable(@NonNull Context context, @NonNull AvatarColor color, boolean inverted) {
+    return buildDrawable(context, color);
+  }
+
+  @Override
+  public Drawable asCallCard(@NonNull Context context) {
+    throw new UnsupportedOperationException();
+  }
+
+  private @NonNull Drawable buildDrawable(@NonNull Context context, @NonNull AvatarColor color) {
+    Drawable      background      = DrawableCompat.wrap(Objects.requireNonNull(AppCompatResources.getDrawable(context, R.drawable.circle_tintable))).mutate();
+    Drawable      foreground      = Objects.requireNonNull(AppCompatResources.getDrawable(context, drawableResource));
+    LayerDrawable drawable        = new LayerDrawable(new Drawable[]{background, foreground});
+
+    DrawableCompat.setTint(background, color.colorInt());
+    DrawableCompat.setTint(foreground, Avatars.getForegroundColor(color).getColorInt());
+
+    drawable.setLayerInset(1, foregroundInset, foregroundInset, foregroundInset, foregroundInset);
+
+    return drawable;
+  }
+}