X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/c801d85f158c4cba50b588807daabdcbd0ed3853..527fc629c8c7d6eaf06d69ef9c3b3f702214b722:/include/wx/log.h diff --git a/include/wx/log.h b/include/wx/log.h index 7a3fd73d9e..eba734fa24 100644 --- a/include/wx/log.h +++ b/include/wx/log.h @@ -14,38 +14,53 @@ #ifdef __GNUG__ #pragma interface "log.h" -#endif //GNU C++ +#endif + +// ---------------------------------------------------------------------------- +// constants +// ---------------------------------------------------------------------------- + +// different standard log levels (you may also define your own) +enum +{ + wxLOG_FatalError, // program can't continue, abort immediately + wxLOG_Error, // a serious error, user must be informed about it + wxLOG_Warning, // user is normally informed about it but may be ignored + wxLOG_Message, // normal message (i.e. normal output of a non GUI app) + wxLOG_Info, // informational message (a.k.a. 'Verbose') + wxLOG_Status, // informational: might go to the status line of GUI app + wxLOG_Debug, // never shown to the user, disabled in release mode + wxLOG_Trace, // trace messages are also only enabled in debug mode + wxLOG_Progress, // used for progress indicator (not yet) + wxLOG_User = 100 // user defined levels start here +}; + +// meaning of different bits of the trace mask (which allows selectively +// enable/disable some trace messages) +#define wxTraceMemAlloc 0x0001 // trace memory allocation (new/delete) +#define wxTraceMessages 0x0002 // trace window messages/X callbacks +#define wxTraceResAlloc 0x0004 // trace GDI resource allocation +#define wxTraceRefCount 0x0008 // trace various ref counting operations + +#ifdef __WXMSW__ + #define wxTraceOleCalls 0x0100 // OLE interface calls +#endif + +typedef unsigned long wxTraceMask; +typedef unsigned long wxLogLevel; // ---------------------------------------------------------------------------- // derive from this class to redirect (or suppress, or ...) log messages // normally, only a single instance of this class exists but it's not enforced -// -// ## would ne nice to add a time stamp to log messages // ---------------------------------------------------------------------------- class WXDLLEXPORT wxLog { public: - enum Level - { - FatalError, // program can't continue, abort immediately - Error, // a serious error, user must be informed about it - Warning, // warning: user is normally informed about but may ignore it - Message, // normal message (i.e. normal output of a non GUI app) - Info, // informational message (a.k.a. 'Verbose') - Status, // informational: might go to the status line of GUI app - Debug, // never shown to the user, disabled in release mode - Trace, // trace messages are also only enabled in debug mode - Progress, // used for progress indicator (not yet) - User1, // user defined levels (use with wxLogGeneric(wxLog::User1,...) - User2, // - User3, // - }; - // ctor wxLog(); // sink function - static void OnLog(Level level, const char *szString) + static void OnLog(wxLogLevel level, const char *szString) { if ( ms_pLogger != 0 ) ms_pLogger->DoLog(level, szString); } // message buffering @@ -53,7 +68,9 @@ public: // (FILE and iostream logs don't need it, but wxGuiLog does to avoid // showing 17 modal dialogs one after another) virtual void Flush(); - // call Flush() only if this function returns true + // call to Flush() may be optimized: call it only if this function + // returns true (although Flush() also returns immediately if there + // is no messages, this functions is more efficient because inline) bool HasPendingMessages() const { return m_bHasMessages; } // only one sink is active at each moment @@ -65,16 +82,22 @@ public: // functions controlling the default wxLog behaviour // verbose mode is activated by standard command-line '-verbose' option - static void SetVerbose(bool bVerbose = TRUE) { ms_bVerbose = bVerbose; } + void SetVerbose(bool bVerbose = TRUE) { m_bVerbose = bVerbose; } // sets the format for timestamp prepended by wxLog::DoLog(): it's // passed to strftime() function, see it's documentation for details. - // the string is not copied! - static void SetTimeStampFormat(const char *szTimeFormat) - { ms_szTimeFormat = szTimeFormat; } + // no time stamp at all if szTF is NULL or empty + // NB: the string is not copied, so it's lifetime must be long enough! + void SetTimeStampFormat(const char *szTF) { m_szTimeFormat = szTF; } + // trace mask (see wxTraceXXX constants for details) + void SetTraceMask(wxTraceMask ulMask) { m_ulTraceMask = ulMask; } // accessors // gets the verbose status - static bool GetVerbose() { return ms_bVerbose; } + bool GetVerbose() const { return m_bVerbose; } + // get current time format + const char *GetTimeStampFormat() const { return m_szTimeFormat; } + // get trace mask + wxTraceMask GetTraceMask() const { return m_ulTraceMask; } // make dtor virtual for all derived classes virtual ~wxLog() { } @@ -82,20 +105,21 @@ public: protected: bool m_bHasMessages; - // static variables - // ---------------- - static bool ms_bVerbose; // FALSE => ignore LogInfo messages - static const char *ms_szTimeFormat; // format for strftime() + bool m_bVerbose; // FALSE => ignore LogInfo messages + const char *m_szTimeFormat; // format for strftime() + wxTraceMask m_ulTraceMask; // controls wxLogTrace behaviour -private: // the logging functions that can be overriden // default DoLog() prepends the time stamp and a prefix corresponding // to the message to szString and then passes it to DoLogString() - virtual void DoLog(Level level, const char *szString); + virtual void DoLog(wxLogLevel level, const char *szString); // default DoLogString does nothing but is not pure virtual because if // you override DoLog() you might not need it at all virtual void DoLogString(const char *szString); +private: + // static variables + // ---------------- static wxLog *ms_pLogger; // currently active log sink static bool ms_bInitialized; // any log targets created? }; @@ -133,8 +157,8 @@ protected: ostream *m_ostr; }; -/* // log everything to a text window (GUI only of course) +class wxTextCtrl; class WXDLLEXPORT wxLogTextCtrl : public wxLogStream { public: @@ -142,7 +166,6 @@ public: wxLogTextCtrl(wxTextCtrl *pTextCtrl); ~wxLogTextCtrl(); }; -*/ // ---------------------------------------------------------------------------- // GUI log target, the default one for wxWindows programs @@ -157,12 +180,40 @@ public: virtual void Flush(); protected: - virtual void DoLog(Level level, const char *szString); + virtual void DoLog(wxLogLevel level, const char *szString); wxArrayString m_aMessages; bool m_bErrors; }; +// ---------------------------------------------------------------------------- +// (background) log window: this class forwards all log messages to the log +// target which was active when it was instantiated, but also collects them +// to the log window. This window has it's own menu which allows the user to +// close it, clear the log contents or save it to the file. +// ---------------------------------------------------------------------------- +class wxLogFrame; +class WXDLLEXPORT wxLogWindow : public wxLog +{ +public: + wxLogWindow(const char *szTitle, bool bShow = TRUE); + ~wxLogWindow(); + + // show/hide the log window + void Show(bool bShow = TRUE); + + // accessors + wxLog *GetOldLog() const { return m_pOldLog; } + +protected: + virtual void DoLog(wxLogLevel level, const char *szString); + virtual void DoLogString(const char *szString); + +private: + wxLog *m_pOldLog; // previous log target + wxLogFrame *m_pLogFrame; // the log frame +}; + // ---------------------------------------------------------------------------- // /dev/null log target: suppress logging until this object goes out of scope // ---------------------------------------------------------------------------- @@ -203,16 +254,13 @@ private: // define wxLog // ------------------- -// NB: all these functions take `wxTString' and not -// `const wxTString&' because according to C++ standard -// the first argument to a vararg function can not be -// an array, function or reference :-( - -// the most generic log function -void WXDLLEXPORT wxLogGeneric(wxLog::Level level, wxTString strFormat, ...); - #define DECLARE_LOG_FUNCTION(level) \ - extern void WXDLLEXPORT wxLog##level(wxTString strFormat, ...) + extern void WXDLLEXPORT wxLog##level(const char *szFormat, ...) +#define DECLARE_LOG_FUNCTION2(level, arg1) \ + extern void WXDLLEXPORT wxLog##level(arg1, const char *szFormat, ...) + +// a generic function for all levels (level is passes as parameter) +DECLARE_LOG_FUNCTION2(Generic, wxLogLevel level); // one function per each level DECLARE_LOG_FUNCTION(FatalError); @@ -229,15 +277,24 @@ DECLARE_LOG_FUNCTION(SysError); // and another one which also takes the error code (for those broken APIs // that don't set the errno (like registry APIs in Win32)) -void WXDLLEXPORT wxLogSysError(long lErrCode, wxTString strFormat, ...); +DECLARE_LOG_FUNCTION2(SysError, long lErrCode); -// debug functions don't translate their arguments -#undef DECLARE_LOG_FUNCTION -#define DECLARE_LOG_FUNCTION(level) \ - extern void WXDLLEXPORT wxLog##level(const char *szFormat, ...) +// debug functions do nothing in release mode +#ifdef __WXDEBUG__ + DECLARE_LOG_FUNCTION(Debug); + + // first king of LogTrace is uncoditional: it doesn't check the level, + // while the second one does nothing if all of level bits are not set + // in wxLog::GetActive()->GetTraceMask(). + DECLARE_LOG_FUNCTION(Trace); + DECLARE_LOG_FUNCTION2(Trace, wxTraceMask mask); +#else //!debug + // these functions do nothing + inline void wxLogDebug(const char *, ...) { } + inline void wxLogTrace(const char *, ...) { } + inline void wxLogTrace(wxTraceMask, const char *, ...) { } +#endif -DECLARE_LOG_FUNCTION(Debug); -DECLARE_LOG_FUNCTION(Trace); // are we in 'verbose' mode? // (note that it's often handy to change this var manually from the @@ -261,15 +318,15 @@ const char* WXDLLEXPORT wxSysErrorMsg(unsigned long nErrCode = 0); // debug only logging functions: use them with API name and error code // ---------------------------------------------------------------------------- -#ifdef __DEBUG__ +#ifdef __WXDEBUG__ #define wxLogApiError(api, rc) \ wxLogDebug("At %s(%d) '%s' failed with error %lx (%s).", \ __FILE__, __LINE__, api, \ rc, wxSysErrorMsg(rc)) - #define wxLogLastError(api) wxLogApiError(api, ::GetLastError()) + #define wxLogLastError(api) wxLogApiError(api, wxSysErrorCode()) #else //!debug - #define wxLogApiError(api, rc) - #define wxLogLastError(api) + inline void wxLogApiError(const char *, long) { } + inline void wxLogLastError(const char *) { } #endif //debug/!debug #endif //__LOGH__