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blacklib/include/blackmisc/display.h

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+//! Copyright (C) 2013 Roland Winklmeier
+//! This Source Code Form is subject to the terms of the Mozilla Public
+//! License, v. 2.0. If a copy of the MPL was not distributed with this
+//! file, You can obtain one at http://mozilla.org/MPL/2.0/
+
+#ifndef DISPLAY_H
+#define DISPLAY_H
+
+#include <QFile>
+#include <QMutex>
+
+#include "blackmisc/log.h"
+
+namespace BlackMisc
+{
+    class ILogDisplay
+    {
+    public:
+        /// Constructor
+        ILogDisplay(const QString &displayName );
+
+        /// Destructor
+        virtual ~ILogDisplay();
+
+        /// Display the string where it does.
+        void print( const CLog::SLogInformation &logInformation, const QString &message );
+
+        /// This is the identifier for a displayer, it is used to find or remove a displayer
+        QString DisplayName;
+
+    protected:
+        /// Method to implement in the derived class
+        virtual void doPrint(const CLog::SLogInformation &logInformation, const QString &message) = NULL;
+
+        // Return the header string with date (for the first line of the log)
+        static QString headLine ();
+
+    public:
+
+        /// Convert log type to string
+        static const char *logTypeToString (CLog::TLogType logType);
+
+        /// Convert the current date to human string
+        static QString currentDateToString ();
+
+        /// Convert date to "2000/01/14 10:05:17" string
+        static QString dateToString (const QDateTime &time);
+
+    private:
+
+        QMutex *m_mutex;
+
+    };
+
+    class CStdDisplay : virtual public ILogDisplay
+    {
+    public:
+        CStdDisplay ( const QString &displayerName = QString("")) : ILogDisplay (displayerName) {}
+
+    protected:
+
+        /// Display the string to stdout and OutputDebugString on Windows
+        virtual void doPrint (const CLog::SLogInformation &logInformation, const QString &message);
+
+    };
+
+    class CFileDisplay : virtual public ILogDisplay
+    {
+    public:
+
+        /// Constructor
+        CFileDisplay (const QString &filename, bool eraseLastLog = false, const QString &displayName = "");
+
+        CFileDisplay ();
+
+        ~CFileDisplay ();
+
+        /// Set Parameter of the displayer if not set at the ctor time
+        void setParam (const QString &filename, bool eraseLastLog = false);
+
+    protected:
+        /// Put the string into the file.
+        virtual void doPrint (const CLog::SLogInformation &logInformation, const QString &message);
+
+    private:
+        QString     m_fileName;
+
+        QFile      *m_file;
+
+        bool		m_needHeader;
+    };
+} // BlackMisc
+
+
+#endif // DISPLAY_H