merged all drawing functions into a single shader processing function

app/common/filefunctions.cpp

@@ -187,4 +187,16 @@ QString FileFunctions::EnsureFilenameExtension(QString fn, const QString &extens
   return fn;
 }
 
+QString FileFunctions::ReadFileAsString(const QString &filename)
+{
+  QFile f(filename);
+  QString file_data;
+  if (f.open(QFile::ReadOnly | QFile::Text)) {
+    QTextStream text_stream(&f);
+    file_data = text_stream.readAll();
+    f.close();
+  }
+  return file_data;
+}
+
 OLIVE_NAMESPACE_EXIT

app/common/filefunctions.h

@@ -65,6 +65,8 @@ public:
    */
   static QString EnsureFilenameExtension(QString fn, const QString& extension);
 
+  static QString ReadFileAsString(const QString& filename);
+
 };