Use Cairo for wxGraphicsContext in wxX11.

[wxWidgets.git] / interface / wx / log.h

diff --git a/interface/wx/log.h b/interface/wx/log.h
index c8004415b276ca3e76a3fce5436de1a9dee38590..8a2a670225683a40019133a0d5088544523cc79a 100644 (file)
--- a/interface/wx/log.h
+++ b/interface/wx/log.h
@@ -1,6 +1,6 @@
 /////////////////////////////////////////////////////////////////////////////
 // Name:        log.h
 /////////////////////////////////////////////////////////////////////////////
 // Name:        log.h

-// Purpose:     interface of wxLogWindow
+// Purpose:     interface of wxLog* classes

 // Author:      wxWidgets team
 // RCS-ID:      $Id$
 // Licence:     wxWindows licence
 // Author:      wxWidgets team
 // RCS-ID:      $Id$
 // Licence:     wxWindows licence


@@ -96,9 +96,11 @@ public:
             @true to show the frame initially (default), otherwise
             Show() must be called later.
         @param passToOld
             @true to show the frame initially (default), otherwise
             Show() must be called later.
         @param passToOld

-            @true to process the log messages normally in addition to
-            logging them in the log frame (default), @false to only log them in the
-            log frame.
+            @true to process the log messages normally in addition to logging them 
+            in the log frame (default), @false to only log them in the log frame.
+            Note that if no targets were set using wxLog::SetActiveTarget() then 
+            wxLogWindow simply becomes the active one and messages won't be passed
+            to other targets.

     */
     wxLogWindow(wxWindow* pParent, const wxString& szTitle, bool show = true,
                 bool passToOld = true);
     */
     wxLogWindow(wxWindow* pParent, const wxString& szTitle, bool show = true,
                 bool passToOld = true);


@@ -584,145 +586,32 @@ public:
 /**
     @class wxLog
 
 /**
     @class wxLog
 

-    wxLog class defines the interface for the @e log targets used by wxWidgets
+    wxLog class defines the interface for the <em>log targets</em> used by wxWidgets

     logging functions as explained in the @ref overview_log.
     logging functions as explained in the @ref overview_log.

+    

     The only situations when you need to directly use this class is when you want
     to derive your own log target because the existing ones don't satisfy your
     The only situations when you need to directly use this class is when you want
     to derive your own log target because the existing ones don't satisfy your

-    needs. Another case is if you wish to customize the behaviour of the standard
-    logging classes (all of which respect the wxLog settings): for example, set
-    which trace messages are logged and which are not or change (or even remove
-    completely) the timestamp on the messages.
+    needs.

 
 

-    Otherwise, it is completely hidden behind the @e wxLogXXX() functions and
-    you may not even know about its existence.
+    Otherwise, it is completely hidden behind the @ref group_funcmacro_log "wxLogXXX() functions" 
+    and you may not even know about its existence.

 
     @note For console-mode applications, the default target is wxLogStderr, so
           that all @e wxLogXXX() functions print on @c stderr when @c wxUSE_GUI = 0.
 
 
     @note For console-mode applications, the default target is wxLogStderr, so
           that all @e wxLogXXX() functions print on @c stderr when @c wxUSE_GUI = 0.
 

-
-    @section log_derivingyours Deriving your own log target
-
-    There are several methods which may be overridden in the derived class to
-    customize log messages handling: DoLogRecord(), DoLogTextAtLevel() and
-    DoLogText().
-
-    The last method is the simplest one: you should override it if you simply
-    want to redirect the log output elsewhere, without taking into account the
-    level of the message. If you do want to handle messages of different levels
-    differently, then you should override DoLogTextAtLevel().
-
-    Finally, if more control over the output format is needed, then the first
-    function must be overridden as it allows to construct custom messages
-    depending on the log level or even do completely different things depending
-    on the message severity (for example, throw away all messages except
-    warnings and errors, show warnings on the screen and forward the error
-    messages to the user's (or programmer's) cell phone -- maybe depending on
-    whether the timestamp tells us if it is day or night in the current time
-    zone).
-
-    There also functions to support message buffering. Why are they needed?
-    Some of wxLog implementations, most notably the standard wxLogGui class,
-    buffer the messages (for example, to avoid showing the user a zillion of modal
-    message boxes one after another -- which would be really annoying).
-
-    Flush() shows them all and clears the buffer contents.
-    This function doesn't do anything if the buffer is already empty.
-
-    @see FlushActive()
-
-
-    @section log_tracemasks Using trace masks
-
-    Notice that the use of log trace masks is hardly necessary any longer in
-    current wxWidgets version as the same effect can be achieved by using
-    different log components for different log statements of any level. Please
-    see @ref overview_log_enable for more information about the log components.
-
-    The functions below allow some limited customization of wxLog behaviour
-    without writing a new log target class (which, aside from being a matter of
-    several minutes, allows you to do anything you want).
-    The verbose messages are the trace messages which are not disabled in the
-    release mode and are generated by wxLogVerbose().
-    They are not normally shown to the user because they present little interest,
-    but may be activated, for example, in order to help the user find some program
-    problem.
-
-    As for the (real) trace messages, their handling depends on the currently
-    enabled trace masks: if AddTraceMask() was called for the mask of the given
-    message, it will be logged, otherwise nothing happens.
-
-    For example,
-    @code
-    wxLogTrace( wxTRACE_OleCalls, "IFoo::Bar() called" );
-    @endcode
-
-    will log the message if it was preceded by:
-
-    @code
-    wxLog::AddTraceMask( wxTRACE_OleCalls);
-    @endcode
-
-    The standard trace masks are given in wxLogTrace() documentation.
-
-    Finally, the @e wxLog::DoLog() function automatically prepends a time stamp
-    to all the messages. The format of the time stamp may be changed: it can be
-    any string with % specifications fully described in the documentation of the
-    standard @e strftime() function. For example, the default format is
-    "[%d/%b/%y %H:%M:%S] " which gives something like "[17/Sep/98 22:10:16] "
-    (without quotes) for the current date. Setting an empty string as the time
-    format or calling the shortcut wxLog::DisableTimestamp(), disables timestamping
-    of the messages completely.
-
-    See also
-    @li AddTraceMask()
-    @li RemoveTraceMask()
-    @li ClearTraceMasks()
-    @li GetTraceMasks()
-    @li IsAllowedTraceMask()
-    @li SetVerbose()
-    @li GetVerbose()
-    @li SetTimestamp()
-    @li GetTimestamp()
-    @li SetTraceMask()
-    @li GetTraceMask()
-    @li SetRepetitionCounting()
-    @li GetRepetitionCounting()
-
-    @note
-    Timestamping is disabled for Visual C++ users in debug builds by
-    default because otherwise it would be impossible to directly go to the line
-    from which the log message was generated by simply clicking in the debugger
-    window on the corresponding error message. If you wish to enable it, please
-    use SetTimestamp() explicitly.
-
-
-    @section log_target Manipulating the log target
-
-    The functions in this section work with and manipulate the active log
-    target.
-
-    Get/Set methods are used to install/query the current active target and,
-    finally, DontCreateOnDemand() disables the automatic creation of a standard
-    log target if none actually exists. It is only useful when the application
-    is terminating and shouldn't be used in other situations because it may
-    easily lead to a loss of messages.
-
-    See also:
-    @li GetActiveTarget()
-    @li SetActiveTarget()
-    @li DontCreateOnDemand()
-    @li Suspend()
-    @li Resume()
-
-

     @library{wxcore}
     @category{logging}
 
     @library{wxcore}
     @category{logging}
 

-    @see @ref overview_log
+    @see @ref overview_log, @ref group_funcmacro_log "wxLogXXX() functions" 

 */
 class wxLog
 {
 public:
 */
 class wxLog
 {
 public:

+    /**
+        @name Trace mask functions
+    */
+    //@{
+    

     /**
         Add the @a mask to the list of allowed masks for wxLogTrace().
 
     /**
         Add the @a mask to the list of allowed masks for wxLogTrace().
 


@@ -738,48 +627,47 @@ public:
     static void ClearTraceMasks();
 
     /**
     static void ClearTraceMasks();
 
     /**

-        Instructs wxLog to not create new log targets on the fly if there is none
-        currently. (Almost) for internal use only: it is supposed to be called by the
-        application shutdown code.
+        Returns the currently allowed list of string trace masks.

 
 

-        Note that this function also calls ClearTraceMasks().
+        @see AddTraceMask().

     */
     */

-    static void DontCreateOnDemand();
+    static const wxArrayString& GetTraceMasks();

 
     /**
 
     /**

-        Globally enable or disable logging.
+        Returns @true if the @a mask is one of allowed masks for wxLogTrace().

 
 

-        Calling this function with @false argument disables all log messages
-        for the current thread.
+        See also: AddTraceMask(), RemoveTraceMask()
+    */
+    static bool IsAllowedTraceMask(const wxString& mask);

 
 

-        @see wxLogNull, IsEnabled()
+    /**
+        Remove the @a mask from the list of allowed masks for
+        wxLogTrace().

 
 

-        @return
-            The old state, i.e. @true if logging was previously enabled and
-            @false if it was disabled.
-     */
-    static bool EnableLogging(bool enable = true);
+        @see AddTraceMask()
+    */
+    static void RemoveTraceMask(const wxString& mask);
+    
+    //@}

 
 

-    /**
-        Shows all the messages currently in buffer and clears it.

 
 

-        If the buffer is already empty, nothing happens.

 
 

-        If you override this method in a derived class, call the base class
-        version first, before doing anything else.
+    /**
+        @name Log target functions

     */
     */

-    virtual void Flush();
-
+    //@{
+    

     /**
     /**

-        Flushes the current log target if any, does nothing if there is none.
+        Instructs wxLog to not create new log targets on the fly if there is none
+        currently (see GetActiveTarget()). 
+        
+        (Almost) for internal use only: it is supposed to be called by the
+        application shutdown code (where you don't want the log target to be
+        automatically created anymore).

 
 

-        When this method is called from the main thread context, it also
-        flushes any previously buffered messages logged by the other threads.
-        When it is called from the other threads it simply calls Flush() on the
-        currently active log target, so it mostly makes sense to do this if a
-        thread has its own logger set with SetThreadActiveTarget().
+        Note that this function also calls ClearTraceMasks().

     */
     */

-    static void FlushActive();
+    static void DontCreateOnDemand();

 
     /**
         Returns the pointer to the active log target (may be @NULL).
 
     /**
         Returns the pointer to the active log target (may be @NULL).


@@ -799,57 +687,95 @@ public:
     static wxLog* GetActiveTarget();
 
     /**
     static wxLog* GetActiveTarget();
 
     /**

-        Returns the current log level limit.
+        Sets the specified log target as the active one.

 
 

-        All messages at levels strictly greater than the value returned by this
-        function are not logged at all.
+        Returns the pointer to the previous active log target (may be @NULL).
+        To suppress logging use a new instance of wxLogNull not @NULL.  If the
+        active log target is set to @NULL a new default log target will be
+        created when logging occurs.

 
 

-        @see SetLogLevel(), IsLevelEnabled()
+        @see SetThreadActiveTarget()

     */
     */

-    static wxLogLevel GetLogLevel();
+    static wxLog* SetActiveTarget(wxLog* logtarget);

 
     /**
 
     /**

-        Returns whether the repetition counting mode is enabled.
-    */
-    static bool GetRepetitionCounting();
+        Sets a thread-specific log target.

 
 

-    /**
-        Returns the current timestamp format string.
-    */
-    static const wxString& GetTimestamp();
+        The log target passed to this function will be used for all messages
+        logged by the current thread using the usual wxLog functions. This
+        shouldn't be called from the main thread which never uses a thread-
+        specific log target but can be used for the other threads to handle
+        thread logging completely separately; instead of buffering thread log
+        messages in the main thread logger.

 
 

-    /**
-        @deprecated
-        Returns the current trace mask, see Customization() section for details.
-    */
-    static wxTraceMask GetTraceMask();
+        Notice that unlike for SetActiveTarget(), wxWidgets does not destroy
+        the thread-specific log targets when the thread terminates so doing
+        this is your responsibility.
+
+        This method is only available if @c wxUSE_THREADS is 1, i.e. wxWidgets
+        was compiled with threads support.

 
 

+        @param logger
+            The new thread-specific log target, possibly @NULL.
+        @return
+            The previous thread-specific log target, initially @NULL.
+
+        @since 2.9.1
+     */
+    static wxLog *SetThreadActiveTarget(wxLog *logger);
+    

     /**
     /**

-        Returns the currently allowed list of string trace masks.
+        Flushes the current log target if any, does nothing if there is none.

 
 

-        @see AddTraceMask().
+        When this method is called from the main thread context, it also
+        flushes any previously buffered messages logged by the other threads.
+        When it is called from the other threads it simply calls Flush() on the
+        currently active log target, so it mostly makes sense to do this if a
+        thread has its own logger set with SetThreadActiveTarget().

     */
     */

-    static const wxArrayString& GetTraceMasks();
-
+    static void FlushActive();
+    

     /**
     /**

-        Returns whether the verbose mode is currently active.
+        Resumes logging previously suspended by a call to Suspend().
+        All messages logged in the meanwhile will be flushed soon.

     */
     */

-    static bool GetVerbose();
+    static void Resume();

 
     /**
 
     /**

-        Returns @true if the @a mask is one of allowed masks for wxLogTrace().
+        Suspends the logging until Resume() is called.

 
 

-        See also: AddTraceMask(), RemoveTraceMask()
+        Note that the latter must be called the same number of times as the former
+        to undo it, i.e. if you call Suspend() twice you must call Resume() twice as well.
+
+        Note that suspending the logging means that the log sink won't be be flushed
+        periodically, it doesn't have any effect if the current log target does the
+        logging immediately without waiting for Flush() to be called (the standard
+        GUI log target only shows the log dialog when it is flushed, so Suspend()
+        works as expected with it).
+
+        @see Resume(), wxLogNull

     */
     */

-    static bool IsAllowedTraceMask(const wxString& mask);
+    static void Suspend();
+    
+    //@}
+    
+

 
     /**
 
     /**

-        Returns true if logging is enabled at all now.
+        @name Log level functions
+    */
+    //@{
+    
+    /**
+        Returns the current log level limit.

 
 

-        @see IsLevelEnabled(), EnableLogging()
-     */
-    static bool IsEnabled();
+        All messages at levels strictly greater than the value returned by this
+        function are not logged at all.

 
 

+        @see SetLogLevel(), IsLevelEnabled()
+    */
+    static wxLogLevel GetLogLevel();
+    

     /**
         Returns true if logging at this level is enabled for the current thread.
 
     /**
         Returns true if logging at this level is enabled for the current thread.
 


@@ -863,32 +789,6 @@ public:
      */
     static bool IsLevelEnabled(wxLogLevel level, wxString component);
 
      */
     static bool IsLevelEnabled(wxLogLevel level, wxString component);
 

-    /**
-        Remove the @a mask from the list of allowed masks for
-        wxLogTrace().
-
-        @see AddTraceMask()
-    */
-    static void RemoveTraceMask(const wxString& mask);
-
-    /**
-        Resumes logging previously suspended by a call to Suspend().
-        All messages logged in the meanwhile will be flushed soon.
-    */
-    static void Resume();
-
-    /**
-        Sets the specified log target as the active one.
-
-        Returns the pointer to the previous active log target (may be @NULL).
-        To suppress logging use a new instance of wxLogNull not @NULL.  If the
-        active log target is set to @NULL a new default log target will be
-        created when logging occurs.
-
-        @see SetThreadActiveTarget()
-    */
-    static wxLog* SetActiveTarget(wxLog* logtarget);
-

     /**
         Sets the log level for the given component.
 
     /**
         Sets the log level for the given component.
 


@@ -918,39 +818,53 @@ public:
         @see SetComponentLevel()
     */
     static void SetLogLevel(wxLogLevel logLevel);
         @see SetComponentLevel()
     */
     static void SetLogLevel(wxLogLevel logLevel);

+    
+    //@}
+
+

 
     /**
 
     /**

-        Enables logging mode in which a log message is logged once, and in case exactly
-        the same message successively repeats one or more times, only the number of
-        repetitions is logged.
+        @name Enable/disable features functions

     */
     */

-    static void SetRepetitionCounting(bool repetCounting = true);
-
+    //@{
+    

     /**
     /**

-        Sets a thread-specific log target.
-
-        The log target passed to this function will be used for all messages
-        logged by the current thread using the usual wxLog functions. This
-        shouldn't be called from the main thread which never uses a thread-
-        specific log target but can be used for the other threads to handle
-        thread logging completely separately; instead of buffering thread log
-        messages in the main thread logger.
+        Globally enable or disable logging.

 
 

-        Notice that unlike for SetActiveTarget(), wxWidgets does not destroy
-        the thread-specific log targets when the thread terminates so doing
-        this is your responsibility.
+        Calling this function with @false argument disables all log messages
+        for the current thread.

 
 

-        This method is only available if @c wxUSE_THREADS is 1, i.e. wxWidgets
-        was compiled with threads support.
+        @see wxLogNull, IsEnabled()

 
 

-        @param logger
-            The new thread-specific log target, possibly @NULL.

         @return
         @return

-            The previous thread-specific log target, initially @NULL.
+            The old state, i.e. @true if logging was previously enabled and
+            @false if it was disabled.
+     */
+    static bool EnableLogging(bool enable = true);

 
 

-        @since 2.9.1
+    /**
+        Returns true if logging is enabled at all now.
+
+        @see IsLevelEnabled(), EnableLogging()

      */
      */

-    static wxLog *SetThreadActiveTarget(wxLog *logger);
+    static bool IsEnabled();
+    
+    /**
+        Returns whether the repetition counting mode is enabled.
+    */
+    static bool GetRepetitionCounting();
+
+    /**
+        Enables logging mode in which a log message is logged once, and in case exactly
+        the same message successively repeats one or more times, only the number of
+        repetitions is logged.
+    */
+    static void SetRepetitionCounting(bool repetCounting = true);
+    
+    /**
+        Returns the current timestamp format string.
+    */
+    static const wxString& GetTimestamp();

 
     /**
         Sets the timestamp format prepended by the default log targets to all
 
     /**
         Sets the timestamp format prepended by the default log targets to all


@@ -966,35 +880,39 @@ public:
         @since 2.9.0
     */
     static void DisableTimestamp();
         @since 2.9.0
     */
     static void DisableTimestamp();

-
+    

     /**
     /**

-        @deprecated
-        Sets the trace mask, see @ref log_tracemasks section for details.
+        Returns whether the verbose mode is currently active.

     */
     */

-    static void SetTraceMask(wxTraceMask mask);
+    static bool GetVerbose();

 
     /**
         Activates or deactivates verbose mode in which the verbose messages are
         logged as the normal ones instead of being silently dropped.
 
     /**
         Activates or deactivates verbose mode in which the verbose messages are
         logged as the normal ones instead of being silently dropped.

+        
+        The verbose messages are the trace messages which are not disabled in the
+        release mode and are generated by wxLogVerbose().
+        
+        @see @ref overview_log

     */
     static void SetVerbose(bool verbose = true);
     */
     static void SetVerbose(bool verbose = true);

+    
+    //@}
+    
+    

 
     /**
 
     /**

-        Suspends the logging until Resume() is called.
-
-        Note that the latter must be called the same number of times as the former
-        to undo it, i.e. if you call Suspend() twice you must call Resume() twice as well.
-
-        Note that suspending the logging means that the log sink won't be be flushed
-        periodically, it doesn't have any effect if the current log target does the
-        logging immediately without waiting for Flush() to be called (the standard
-        GUI log target only shows the log dialog when it is flushed, so Suspend()
-        works as expected with it).
+        Some of wxLog implementations, most notably the standard wxLogGui class,
+        buffer the messages (for example, to avoid showing the user a zillion of modal
+        message boxes one after another -- which would be really annoying).
+        This function shows them all and clears the buffer contents.
+        If the buffer is already empty, nothing happens.

 
 

-        @see Resume(), wxLogNull
+        If you override this method in a derived class, call the base class
+        version first, before doing anything else.

     */
     */

-    static void Suspend();
-
+    virtual void Flush();
+    

     /**
         Log the given record.
 
     /**
         Log the given record.
 


@@ -1041,7 +959,7 @@ protected:
     //@{
 
     /**
     //@{
 
     /**

-        Called to created log a new record.
+        Called to log a new record.

 
         Any log message created by wxLogXXX() functions is passed to this
         method of the active log target. The default implementation prepends
 
         Any log message created by wxLogXXX() functions is passed to this
         method of the active log target. The default implementation prepends


@@ -1262,7 +1180,7 @@ void wxVLogError(const char* formatString, va_list argPtr);
 /** @addtogroup group_funcmacro_log */
 //@{
 /**
 /** @addtogroup group_funcmacro_log */
 //@{
 /**

-    Log a message at wxLOG_Trace log level.
+    Log a message at @c wxLOG_Trace log level (see ::wxLogLevelValues enum).

 
     Notice that the use of trace masks is not recommended any more as setting
     the log components (please see @ref overview_log_enable) provides a way to
 
     Notice that the use of trace masks is not recommended any more as setting
     the log components (please see @ref overview_log_enable) provides a way to


@@ -1274,30 +1192,10 @@ void wxVLogError(const char* formatString, va_list argPtr);
     function is that usually there are a lot of trace messages, so it might
     make sense to separate them from other debug messages.
 
     function is that usually there are a lot of trace messages, so it might
     make sense to separate them from other debug messages.
 

-    wxLogTrace(const char*,const char*,...) and can be used instead of
-    wxLogDebug() if you would like to be able to separate trace messages into
-    different categories which can be enabled or disabled with
-    wxLog::AddTraceMask() and wxLog::RemoveTraceMask().
-
-    @header{wx/log.h}
-*/
-void wxLogTrace(const char *mask, const char* formatString, ... );
-void wxVLogTrace(const char *mask, const char* formatString, va_list argPtr);
-//@}
-
-/** @addtogroup group_funcmacro_log */
-//@{
-/**
-    Like wxLogDebug(), trace functions only do something in debug builds and
-    expand to nothing in the release one. The reason for making it a separate
-    function is that usually there are a lot of trace messages, so it might
-    make sense to separate them from other debug messages.
-
-    In this version of wxLogTrace(), trace messages can be separated into
-    different categories and calls using this function only log the message if
-    the given @a mask is currently enabled in wxLog. This lets you selectively
-    trace only some operations and not others by enabling the desired trace
-    masks with wxLog::AddTraceMask() or by setting the
+    Trace messages can be separated into different categories; these functions in facts
+    only log the message if the given @a mask is currently enabled in wxLog. 
+    This lets you selectively trace only some operations and not others by enabling the 
+    desired trace masks with wxLog::AddTraceMask() or by setting the

     @ref overview_envvars "@c WXTRACE environment variable".
 
     The predefined string trace masks used by wxWidgets are:
     @ref overview_envvars "@c WXTRACE environment variable".
 
     The predefined string trace masks used by wxWidgets are:


@@ -1310,22 +1208,10 @@ void wxVLogTrace(const char *mask, const char* formatString, va_list argPtr);
     @itemdef{ wxTRACE_OleCalls, Trace OLE method calls (Win32 only) }
     @endDefList
 
     @itemdef{ wxTRACE_OleCalls, Trace OLE method calls (Win32 only) }
     @endDefList
 

-    @note Since both the mask and the format string are strings, this might
-          lead to function signature confusion in some cases: if you intend to
-          call the format string only version of wxLogTrace(), add a "%s"
-          format string parameter and then supply a second string parameter for
-          that "%s", the string mask version of wxLogTrace() will erroneously
-          get called instead, since you are supplying two string parameters to
-          the function. In this case you'll unfortunately have to avoid having
-          two leading string parameters, e.g. by adding a bogus integer (with
-          its "%d" format string).
-

     @header{wx/log.h}
 */
 void wxLogTrace(const char* mask, const char* formatString, ... );
     @header{wx/log.h}
 */
 void wxLogTrace(const char* mask, const char* formatString, ... );

-void wxVLogTrace(const char* mask,
-                  const char* formatString,
-                  va_list argPtr);
+void wxVLogTrace(const char* mask, const char* formatString, va_list argPtr);

 //@}
 
 /** @addtogroup group_funcmacro_log */
 //@}
 
 /** @addtogroup group_funcmacro_log */