Merging r5975 through r6036 from trunk to ogl-es branch.

GLES drivers adapted, but only did make compile-tests.


git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/branches/ogl-es@6038 dfc29bdd-3216-0410-991c-e03cc46cb475

include/ILogger.h

@@ -0,0 +1,102 @@
+// Copyright (C) 2002-2012 Nikolaus Gebhardt
+// This file is part of the "Irrlicht Engine".
+// For conditions of distribution and use, see copyright notice in irrlicht.h
+
+#ifndef __I_LOGGER_H_INCLUDED__
+#define __I_LOGGER_H_INCLUDED__
+
+#include "IReferenceCounted.h"
+
+namespace irr
+{
+
+//! Possible log levels.
+//! When used has filter ELL_DEBUG means => log everything and ELL_NONE means => log (nearly) nothing.
+//! When used to print logging information ELL_DEBUG will have lowest priority while ELL_NONE
+//! messages are never filtered and always printed.
+enum ELOG_LEVEL
+{
+	//! Used for printing information helpful in debugging
+	ELL_DEBUG,
+
+	//! Useful information to print. For example hardware infos or something started/stopped.
+	ELL_INFORMATION,
+
+	//! Warnings that something isn't as expected and can cause oddities
+	ELL_WARNING,
+
+	//! Something did go wrong.
+	ELL_ERROR,
+
+	//! Logs with ELL_NONE will never be filtered.
+	//! And used as filter it will remove all logging except ELL_NONE messages.
+	ELL_NONE
+};
+
+
+//! Interface for logging messages, warnings and errors
+class ILogger : public virtual IReferenceCounted
+{
+public:
+
+	//! Destructor
+	virtual ~ILogger() {}
+
+	//! Returns the current set log level.
+	virtual ELOG_LEVEL getLogLevel() const = 0;
+
+	//! Sets a new log level.
+	/** With this value, texts which are sent to the logger are filtered
+	out. For example setting this value to ELL_WARNING, only warnings and
+	errors are printed out. Setting it to ELL_INFORMATION, which is the
+	default setting, warnings, errors and informational texts are printed
+	out.
+	\param ll: new log level filter value. */
+	virtual void setLogLevel(ELOG_LEVEL ll) = 0;
+
+	//! Prints out a text into the log
+	/** \param text: Text to print out.
+	\param ll: Log level of the text. If the text is an error, set
+	it to ELL_ERROR, if it is warning set it to ELL_WARNING, and if it
+	is just an informational text, set it to ELL_INFORMATION. Texts are
+	filtered with these levels. If you want to be a text displayed,
+	independent on what level filter is set, use ELL_NONE. */
+	virtual void log(const c8* text, ELOG_LEVEL ll=ELL_INFORMATION) = 0;
+
+	//! Prints out a text into the log
+	/** \param text: Text to print out.
+	\param hint: Additional info. This string is added after a " :" to the
+	string.
+	\param ll: Log level of the text. If the text is an error, set
+	it to ELL_ERROR, if it is warning set it to ELL_WARNING, and if it
+	is just an informational text, set it to ELL_INFORMATION. Texts are
+	filtered with these levels. If you want to be a text displayed,
+	independent on what level filter is set, use ELL_NONE. */
+	virtual void log(const c8* text, const c8* hint, ELOG_LEVEL ll=ELL_INFORMATION) = 0;
+	virtual void log(const c8* text, const wchar_t* hint, ELOG_LEVEL ll=ELL_INFORMATION) = 0;
+
+	//! Prints out a text into the log
+	/** \param text: Text to print out.
+	\param hint: Additional info. This string is added after a " :" to the
+	string.
+	\param ll: Log level of the text. If the text is an error, set
+	it to ELL_ERROR, if it is warning set it to ELL_WARNING, and if it
+	is just an informational text, set it to ELL_INFORMATION. Texts are
+	filtered with these levels. If you want to be a text displayed,
+	independent on what level filter is set, use ELL_NONE. */
+	virtual void log(const wchar_t* text, const wchar_t* hint, ELOG_LEVEL ll=ELL_INFORMATION) = 0;
+
+	//! Prints out a text into the log
+	/** \param text: Text to print out.
+	\param ll: Log level of the text. If the text is an error, set
+	it to ELL_ERROR, if it is warning set it to ELL_WARNING, and if it
+	is just an informational text, set it to ELL_INFORMATION. Texts are
+	filtered with these levels. If you want to be a text displayed,
+	independent on what level filter is set, use ELL_NONE. */
+	virtual void log(const wchar_t* text, ELOG_LEVEL ll=ELL_INFORMATION) = 0;
+};
+
+} // end namespace
+
+#endif
+