Merge pull request #168 from krepa098/smileys

Smileys

smileypack.cpp

@@ -37,15 +37,15 @@ SmileyPack& SmileyPack::getInstance()
 bool SmileyPack::load(const QString& filename)
 {
     // discard old data
-    lookupTable.clear();
-    QDir::setSearchPaths("smiley", QStringList());
+    assignmentTable.clear();
+    cache.clear();
 
     // open emoticons.xml
     QFile xmlFile(filename);
     if(!xmlFile.open(QIODevice::ReadOnly))
         return false; // cannot open file
 
-    /* parse the cfg document
+    /* parse the cfg file
      * sample:
      * <?xml version='1.0'?>
      * <messaging-emoticon-map>
@@ -72,25 +72,21 @@ bool SmileyPack::load(const QString& filename)
         while (!stringElement.isNull())
         {
             QString rune = stringElement.text();
-            lookupTable.insert(rune, file); // add it to the map
+            assignmentTable.insert(rune, file);
 
             stringElement = stringElement.nextSibling().toElement();
         }
     }
 
-    // Rich Text makes use of Qt's resource system, so
-    // let Qt know about our smilies
-    QFileInfo info(filename);
-    QDir::setSearchPaths("smiley", QStringList() << info.absolutePath());
+    path = QFileInfo(filename).absolutePath();
 
     // success!
     return true;
 }
 
-QString SmileyPack::replaceEmoticons(const QString &msg) const
+QString SmileyPack::replaceEmoticons(QString msg)
 {
-    QString out = msg;
-    QRegExp exp("\\S*"); // matches words
+    QRegExp exp("\\S+"); // matches words
 
     int index = msg.indexOf(exp);
     int offset = 0;
@@ -99,21 +95,40 @@ QString SmileyPack::replaceEmoticons(const QString &msg) const
     while (index >= 0)
     {
         QString key = exp.cap();
-        if (lookupTable.contains(key))
+        if (assignmentTable.contains(key))
         {
-            QString width = QString::number(16);
-            QString height = QString::number(16);
-
-            QString img = lookupTable[key];
-            QString imgRt = "<img src=\"smiley:" + img + "\" width=\"" + width + "\" height=\"" + height + "\">";
-
-            out.replace(index + offset, key.length(), imgRt);
-            offset += imgRt.length() - key.length();
-        }
-        index = msg.indexOf(exp, index + exp.matchedLength() + 1);
+            QString file = assignmentTable[key];
+            if (!cache.contains(file)) {
+                loadSmiley(file);
             }
 
-    return out;
+            QString imgRichText = "<img src=\"data:image/png;base64," % cache[file] % "\">";
+
+            msg.replace(index + offset, key.length(), imgRichText);
+            index += imgRichText.length() - key.length();
+        }
+        index = msg.indexOf(exp, index + key.length());
+    }
+
+    return msg;
+}
+
+void SmileyPack::loadSmiley(const QString &name)
+{
+    QSize size(16, 16); // TODO: adapt to text size
+    QString filename = path % '/' % name;
+    QImage img(filename);
+
+    if (!img.isNull())
+    {
+        QImage scaledImg = img.scaled(size, Qt::KeepAspectRatio, Qt::SmoothTransformation);
+
+        QByteArray scaledImgData;
+        QBuffer buffer(&scaledImgData);
+        scaledImg.save(&buffer, "PNG");
+
+        cache.insert(name, scaledImgData.toBase64());
+    }
 }
 
 void SmileyPack::onSmileyPackChanged()

smileypack.h

@@ -29,7 +29,7 @@ public:
     static SmileyPack& getInstance();
 
     bool load(const QString &filename);
-    QString replaceEmoticons(const QString& msg) const;
+    QString replaceEmoticons(QString msg);
 
 private slots:
     void onSmileyPackChanged();
@@ -39,7 +39,11 @@ private:
     SmileyPack(SmileyPack&) = delete;
     SmileyPack& operator=(const SmileyPack&) = delete;
 
-    QHash<QString, QString> lookupTable; // matches an emoticon to its corresponding smiley
+    void loadSmiley(const QString& name);
+
+    QHash<QString, QString> assignmentTable; // matches an emoticon to its corresponding smiley
+    QHash<QString, QString> cache; // base64 representation of a smiley
+    QString path; // directory containing the cfg file
 };
 
 #endif // SMILEYPACK_H