X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/4f89dbc48e4ffdec4ea55b5444c6df87df2d642d..2348a84293e52b9a701891bcdd801b3e8e541642:/include/wx/object.h diff --git a/include/wx/object.h b/include/wx/object.h index 43688968ab..92f759609d 100644 --- a/include/wx/object.h +++ b/include/wx/object.h @@ -1,11 +1,11 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: object.h +// Name: wx/object.h // Purpose: wxObject class, plus run-time type information macros // Author: Julian Smart // Modified by: Ron Lee // Created: 01/02/97 // RCS-ID: $Id$ -// Copyright: (c) 1997 Julian Smart and Markus Holzem +// Copyright: (c) 1997 Julian Smart // (c) 2001 Ron Lee // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// @@ -13,7 +13,7 @@ #ifndef _WX_OBJECTH__ #define _WX_OBJECTH__ -#ifdef __GNUG__ +#if defined(__GNUG__) && !defined(__APPLE__) #pragma interface "object.h" #endif @@ -24,7 +24,7 @@ #include "wx/defs.h" #include "wx/memory.h" -class WXDLLEXPORT wxObject; +class WXDLLIMPEXP_BASE wxObject; #if wxUSE_DYNAMIC_CLASSES @@ -32,6 +32,8 @@ class WXDLLEXPORT wxObject; // conditional compilation // ---------------------------------------------------------------------------- +// this shouldn't be needed any longer as does it but it +// doesn't hurt neither #ifdef GetClassName #undef GetClassName #endif @@ -39,13 +41,9 @@ class WXDLLEXPORT wxObject; #undef GetClassInfo #endif -class WXDLLEXPORT wxClassInfo; -class WXDLLEXPORT wxHashTable; - -#if wxUSE_STD_IOSTREAM && (defined(__WXDEBUG__) || wxUSE_DEBUG_CONTEXT) -#include "wx/ioswrap.h" -#endif - +class WXDLLIMPEXP_BASE wxClassInfo; +class WXDLLIMPEXP_BASE wxHashTable; +class WXDLLIMPEXP_BASE wxObjectRefData; // ---------------------------------------------------------------------------- // wxClassInfo @@ -53,7 +51,7 @@ class WXDLLEXPORT wxHashTable; typedef wxObject *(*wxObjectConstructorFn)(void); -class WXDLLEXPORT wxClassInfo +class WXDLLIMPEXP_BASE wxClassInfo { public: wxClassInfo( const wxChar *className, @@ -69,7 +67,9 @@ public: , m_baseInfo1(0) , m_baseInfo2(0) , m_next(sm_first) - { sm_first = this; } + { sm_first = this; } + + ~wxClassInfo(); wxObject *CreateObject() { return m_objectConstructor ? (*m_objectConstructor)() : 0; } @@ -84,7 +84,7 @@ public: static const wxClassInfo *GetFirst() { return sm_first; } const wxClassInfo *GetNext() const { return m_next; } static wxClassInfo *FindClass(const wxChar *className); - + // Climb upwards through inheritance hierarchy. // Dual inheritance is catered for. @@ -122,11 +122,18 @@ public: static wxClassInfo *sm_first; wxClassInfo *m_next; + // FIXME: this should be private (currently used directly by way too + // many clients) static wxHashTable *sm_classTable; -}; -WXDLLEXPORT wxObject *wxCreateDynamicObject(const wxChar *name); +private: + // InitializeClasses() helper + static wxClassInfo *GetBaseByName(const wxChar *name); + + DECLARE_NO_COPY_CLASS(wxClassInfo) +}; +WXDLLIMPEXP_BASE wxObject *wxCreateDynamicObject(const wxChar *name); // ---------------------------------------------------------------------------- // Dynamic class macros @@ -148,7 +155,7 @@ WXDLLEXPORT wxObject *wxCreateDynamicObject(const wxChar *name); // Single inheritance with one base class #define IMPLEMENT_DYNAMIC_CLASS(name, basename) \ - wxObject* WXDLLEXPORT_CTORFN wxConstructorFor##name() \ + wxObject* wxConstructorFor##name() \ { return new name; } \ wxClassInfo name::sm_class##name(wxT(#name), wxT(#basename), \ 0, (int) sizeof(name), \ @@ -157,7 +164,7 @@ WXDLLEXPORT wxObject *wxCreateDynamicObject(const wxChar *name); // Multiple inheritance with two base classes #define IMPLEMENT_DYNAMIC_CLASS2(name, basename1, basename2) \ - wxObject* WXDLLEXPORT_CTORFN wxConstructorFor##name() \ + wxObject* wxConstructorFor##name() \ { return new name; } \ wxClassInfo name::sm_class##name(wxT(#name), wxT(#basename1), \ wxT(#basename2), (int) sizeof(name), \ @@ -211,7 +218,7 @@ name##PluginSentinel m_pluginsentinel; wxPluginLibrary *e = (wxPluginLibrary*) wxPluginLibrary::ms_classes.Get(#name); \ if( e != 0 ) { e->RefObj(); } \ } \ - name::name##PluginSentinel::~##name##PluginSentinel() { \ + name::name##PluginSentinel::~name##PluginSentinel() { \ wxPluginLibrary *e = (wxPluginLibrary*) wxPluginLibrary::ms_classes.Get(#name); \ if( e != 0 ) { e->UnrefObj(); } \ } @@ -286,22 +293,23 @@ name##PluginSentinel m_pluginsentinel; #define wxIS_KIND_OF(obj, className) obj->IsKindOf(&className::sm_class##className) - // Just seems a bit nicer-looking (pretend it's not a macro) - +// Just seems a bit nicer-looking (pretend it's not a macro) #define wxIsKindOf(obj, className) obj->IsKindOf(&className::sm_class##className) - // to be replaced by dynamic_cast<> in the future - +// to be replaced by dynamic_cast<> in the future #define wxDynamicCast(obj, className) \ - (className *) wxCheckDynamicCast((wxObject*)(obj), &className::sm_class##className) - - // The 'this' pointer is always true, so use this version - // to cast the this pointer and avoid compiler warnings. + ((className *) wxCheckDynamicCast((wxObject*)(obj), &className::sm_class##className)) +// The 'this' pointer is always true, so use this version +// to cast the this pointer and avoid compiler warnings. #define wxDynamicCastThis(className) \ (IsKindOf(&className::sm_class##className) ? (className *)(this) : (className *)0) +#ifdef HAVE_CONST_CAST +#define wxConstCast(obj, className) const_cast(obj) +#else #define wxConstCast(obj, className) ((className *)(obj)) +#endif #ifdef __WXDEBUG__ @@ -317,96 +325,181 @@ inline void wxCheckCast(void *ptr) #endif // __WXDEBUG__ +// ---------------------------------------------------------------------------- +// set up memory debugging macros +// ---------------------------------------------------------------------------- - // Unfortunately Borland seems to need this include. +/* + Which new/delete operator variants do we want? -#if wxUSE_STD_IOSTREAM \ - && (defined(__WXDEBUG__) || wxUSE_DEBUG_CONTEXT) \ - && defined(__BORLANDC__) -#if wxUSE_IOSTREAMH -#include -#else -#include + _WX_WANT_NEW_SIZET_WXCHAR_INT = void *operator new (size_t size, wxChar *fileName = 0, int lineNum = 0) + _WX_WANT_DELETE_VOID = void operator delete (void * buf) + _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET = void operator delete (void *buf, const char *_fname, size_t _line) + _WX_WANT_DELETE_VOID_WXCHAR_INT = void operator delete(void *buf, wxChar*, int) + _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT = void *operator new[] (size_t size, wxChar *fileName , int lineNum = 0) + _WX_WANT_ARRAY_DELETE_VOID = void operator delete[] (void *buf) + _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT = void operator delete[] (void* buf, wxChar*, int ) +*/ + +#if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING + +// All compilers get this one +#define _WX_WANT_NEW_SIZET_WXCHAR_INT + +// Everyone except Visage gets the next one +#ifndef __VISAGECPP__ + #define _WX_WANT_DELETE_VOID #endif + +// Only visage gets this one under the correct circumstances +#if defined(__VISAGECPP__) && __DEBUG_ALLOC__ + #define _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET +#endif + +// Only VC++ 6.0 and CodeWarrior compilers get overloaded delete that matches new +#if ( defined(__VISUALC__) && (__VISUALC__ >= 1200) ) || (defined(__MWERKS__) && (__MWERKS__ >= 0x2400)) + #define _WX_WANT_DELETE_VOID_WXCHAR_INT #endif +// Now see who (if anyone) gets the array memory operators +#if wxUSE_ARRAY_MEMORY_OPERATORS + + // Everyone except Visual C++ (cause problems for VC++ - crashes) + #if !defined(__VISUALC__) + #define _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT + #endif + + // Everyone except Visual C++ (cause problems for VC++ - crashes) + #if !defined(__VISUALC__) + #define _WX_WANT_ARRAY_DELETE_VOID + #endif + + // Only CodeWarrior 6 or higher + #if defined(__MWERKS__) && (__MWERKS__ >= 0x2400) + #define _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT + #endif + +#endif // wxUSE_ARRAY_MEMORY_OPERATORS + +#endif // WXDEBUG && wxUSE_MEMORY_TRACING + +#if wxUSE_STD_IOSTREAM && (defined(__WXDEBUG__) || wxUSE_DEBUG_CONTEXT) +// needed by wxObject::Dump +#include "wx/iosfwrap.h" +#endif // ---------------------------------------------------------------------------- -// wxObject +// wxObject: the root class of wxWindows object hierarchy // ---------------------------------------------------------------------------- -class WXDLLEXPORT wxObjectRefData; - -class WXDLLEXPORT wxObject +class WXDLLIMPEXP_BASE wxObject { -DECLARE_ABSTRACT_CLASS(wxObject) + DECLARE_ABSTRACT_CLASS(wxObject) +private: + void InitFrom(const wxObject& other); + public: - wxObject() : m_refData(0) {} + wxObject() { m_refData = NULL; } virtual ~wxObject() { UnRef(); } + + wxObject(const wxObject& other) + { + InitFrom(other); + } + + wxObject& operator=(const wxObject& other) + { + if ( this != &other ) + { + UnRef(); + InitFrom(other); + } + return *this; + } bool IsKindOf(wxClassInfo *info) const; -#if defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING - void *operator new (size_t size, wxChar *fileName = 0, int lineNum = 0); -#ifndef __VISAGECPP__ - void operator delete (void * buf); -#elif __DEBUG_ALLOC__ - void operator delete (void *buf, const char *_fname, size_t _line); + // Turn on the correct set of new and delete operators + +#ifdef _WX_WANT_NEW_SIZET_WXCHAR_INT + void *operator new ( size_t size, const wxChar *fileName = NULL, int lineNum = 0 ); #endif - // VC++ 6.0 +#ifdef _WX_WANT_DELETE_VOID + void operator delete ( void * buf ); +#endif -#if defined(__VISUALC__) && (__VISUALC__ >= 1200) - void operator delete(void *buf, wxChar*, int); +#ifdef _WX_WANT_DELETE_VOID_CONSTCHAR_SIZET + void operator delete ( void *buf, const char *_fname, size_t _line ); #endif - // Causes problems for VC++ +#ifdef _WX_WANT_DELETE_VOID_WXCHAR_INT + void operator delete ( void *buf, const wxChar*, int ); +#endif -#if wxUSE_ARRAY_MEMORY_OPERATORS && !defined(__VISUALC__) && !defined( __MWERKS__) - void *operator new[] (size_t size, wxChar *fileName = 0, int lineNum = 0); - void operator delete[] (void *buf); +#ifdef _WX_WANT_ARRAY_NEW_SIZET_WXCHAR_INT + void *operator new[] ( size_t size, const wxChar *fileName = NULL, int lineNum = 0 ); #endif -#ifdef __MWERKS__ - void *operator new[] (size_t size, wxChar *fileName , int lineNum = 0); - void *operator new[] (size_t size) { return operator new[] ( size, 0, 0 ) ; } - void operator delete[] (void *buf); +#ifdef _WX_WANT_ARRAY_DELETE_VOID + void operator delete[] ( void *buf ); #endif -#endif // Debug & memory tracing +#ifdef _WX_WANT_ARRAY_DELETE_VOID_WXCHAR_INT + void operator delete[] (void* buf, const wxChar*, int ); +#endif #if wxUSE_STD_IOSTREAM && (defined(__WXDEBUG__) || wxUSE_DEBUG_CONTEXT) virtual void Dump(wxSTD ostream& str); #endif - // make a 'clone' of the object - + // ref counted data handling methods + + // get/set + wxObjectRefData *GetRefData() const { return m_refData; } + void SetRefData(wxObjectRefData *data) { m_refData = data; } + + // make a 'clone' of the object void Ref(const wxObject& clone); - // destroy a reference - + // destroy a reference void UnRef(); - inline wxObjectRefData *GetRefData() const { return m_refData; } - inline void SetRefData(wxObjectRefData *data) { m_refData = data; } - protected: + // ensure that our data is not shared with anybody else: if we have no + // data, it is created using CreateRefData() below, if we have shared data + // it is copied using CloneRefData(), otherwise nothing is done + void AllocExclusive(); + + // both methods must be implemented if Unshare() is used, not pure virtual + // only because of the backwards compatibility reasons + + // create a new m_refData + virtual wxObjectRefData *CreateRefData() const; + + // create a new m_refData initialized with the given one + virtual wxObjectRefData *CloneRefData(const wxObjectRefData *data) const; + wxObjectRefData *m_refData; }; +// ---------------------------------------------------------------------------- +// wxObjectRefData: ref counted data meant to be stored in wxObject +// ---------------------------------------------------------------------------- -class WXDLLEXPORT wxObjectRefData +class WXDLLIMPEXP_BASE wxObjectRefData { - friend class wxObject; + friend class WXDLLIMPEXP_BASE wxObject; public: - wxObjectRefData() : m_count(1) {} - virtual ~wxObjectRefData() {} + wxObjectRefData() : m_count(1) { } + virtual ~wxObjectRefData() { } + + int GetRefCount() const { return m_count; } - inline int GetRefCount() const { return m_count; } private: int m_count; }; @@ -414,25 +507,28 @@ private: inline wxObject *wxCheckDynamicCast(wxObject *obj, wxClassInfo *classInfo) { - return obj && obj->GetClassInfo()->IsKindOf(classInfo) ? obj : 0; + return obj && obj->GetClassInfo()->IsKindOf(classInfo) ? obj : NULL; } +// ---------------------------------------------------------------------------- +// more debugging macros +// ---------------------------------------------------------------------------- + #ifdef __WXDEBUG__ -#ifndef WXDEBUG_NEW -#define WXDEBUG_NEW new(__TFILE__,__LINE__) -#endif -#else -#define WXDEBUG_NEW new + #ifndef WXDEBUG_NEW + #define WXDEBUG_NEW new(__TFILE__,__LINE__) + #endif +#else // !__WXDEBUG__ + #define WXDEBUG_NEW new #endif - // Redefine new to be the debugging version. This doesn't - // work with all compilers, in which case you need to - // use WXDEBUG_NEW explicitly if you wish to use the debugging version. +// Redefine new to be the debugging version. This doesn't work with all +// compilers, in which case you need to use WXDEBUG_NEW explicitly if you wish +// to use the debugging version. #if defined(__WXDEBUG__) && wxUSE_GLOBAL_MEMORY_OPERATORS && wxUSE_DEBUG_NEW_ALWAYS -#define new new(__TFILE__,__LINE__) + #define new new(__TFILE__,__LINE__) #endif #endif // _WX_OBJECTH__ -// vi:sts=4:sw=4:et