Convert smileys to emojis instead of using images. Fixes pocmo#179.

app/src/main/java/org/yaaic/model/Message.java

@@ -20,25 +20,21 @@
  */
 package org.yaaic.model;
 
-import java.util.Date;
-
-import org.yaaic.utils.MircColors;
-import org.yaaic.utils.Smilies;
-
-import android.annotation.TargetApi;
 import android.content.Context;
-import android.graphics.Typeface;
 import android.graphics.drawable.Drawable;
-import android.os.Build;
 import android.text.Spannable;
 import android.text.SpannableString;
 import android.text.TextUtils;
 import android.text.style.ForegroundColorSpan;
 import android.text.style.ImageSpan;
 import android.text.util.Linkify;
-import android.view.View;
 import android.widget.TextView;
 
+import org.yaaic.utils.Emojis;
+import org.yaaic.utils.MircColors;
+
+import java.util.Date;
+
 /**
  * A channel or server message
  *
@@ -239,6 +235,8 @@ public SpannableString render(Context context)
             canvas = new SpannableString(prefix + timestamp + nick);
             SpannableString renderedText;
 
+            String text = settings.showGraphicalSmilies() ? Emojis.convert(this.text) : this.text;
+
             if (settings.showMircColors()) {
                 renderedText = MircColors.toSpannable(text);
             } else {
@@ -247,10 +245,6 @@ public SpannableString render(Context context)
                 );
             }
 
-            if (settings.showGraphicalSmilies()) {
-                renderedText = Smilies.toSpannable(renderedText, context);
-            }
-
             canvas = new SpannableString(TextUtils.concat(canvas, renderedText));
 
             if (hasSender()) {

app/src/main/java/org/yaaic/utils/Emojis.java

@@ -0,0 +1,89 @@
+/*
+Yaaic - Yet Another Android IRC Client
+
+Copyright 2009-2015 Sebastian Kaspari
+
+This file is part of Yaaic.
+
+Yaaic is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+Yaaic is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Yaaic.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.yaaic.utils;
+
+import java.util.HashMap;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+public final class Emojis {
+    private static final HashMap<String, String> mappings = new HashMap<>();
+    private static Pattern pattern;
+
+    static {
+        mappings.put(":)", "\uD83D\uDE03");
+        mappings.put(":-)", "\uD83D\uDE03");
+        mappings.put(":(", "\uD83D\uDE1E");
+        mappings.put(":-(", "\uD83D\uDE1E");
+        mappings.put(";)", "\uD83D\uDE09");
+        mappings.put(";-)", "\uD83D\uDE09");
+        mappings.put(":p", "\uD83D\uDE1B");
+        mappings.put(":-p", "\uD83D\uDE1B");
+        mappings.put(":P", "\uD83D\uDE1B");
+        mappings.put(":-P", "\uD83D\uDE1B");
+        mappings.put(":D", "\uD83D\uDE04");
+        mappings.put(":-D", "\uD83D\uDE04");
+        mappings.put(":[", "\uD83D\uDE12");
+        mappings.put(":-[", "\uD83D\uDE12");
+        mappings.put(":\\", "\uD83D\uDE14");
+        mappings.put(":-\\", "\uD83D\uDE14");
+        mappings.put(":o", "\uD83D\uDE2E");
+        mappings.put(":-o", "\uD83D\uDE2E");
+        mappings.put(":O", "\uD83D\uDE32");
+        mappings.put(":-O", "\uD83D\uDE32");
+        mappings.put(":*", "\uD83D\uDE18");
+        mappings.put(":-*", "\uD83D\uDE18");
+        mappings.put("8)", "\uD83D\uDE0E");
+        mappings.put("8-)", "\uD83D\uDE0E");
+        mappings.put(":'(", "\uD83D\uDE22");
+        mappings.put(":'-(", "\uD83D\uDE22");
+        mappings.put(":X", "\uD83D\uDE2F");
+        mappings.put(":-X", "\uD83D\uDE2F");
+
+        StringBuilder regex = new StringBuilder("(");
+
+        for (String emoji : mappings.keySet()) {
+            regex.append(Pattern.quote(emoji));
+            regex.append("|");
+        }
+
+        regex.deleteCharAt(regex.length() - 1);
+        regex.append(")");
+
+        pattern = Pattern.compile(regex.toString());
+    }
+
+    /**
+     * Replace text smileys like :) with Emojis.
+     */
+    public static String convert(String text) {
+        Matcher matcher = pattern.matcher(text);
+        StringBuffer buffer = new StringBuffer();
+
+        while (matcher.find()) {
+            matcher.appendReplacement(buffer, mappings.get(matcher.group(1)));
+        }
+
+        matcher.appendTail(buffer);
+
+        return buffer.toString();
+    }
+}