projects / wxWidgets.git / blame
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|---|---|---|
| 5c6eb3a8 SC |
1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: wx/mac/corefoundation/cfdata.h | |
| 3 | // Purpose: wxCFDataRef class | |
| 4 | // Author: Stefan Csomor | |
| 5 | // Modified by: | |
| 6 | // Created: 2007/05/10 | |
| 7 | // RCS-ID: $Id: cfdataref.h 46095 2007-05-18 07:29:49Z SC $ | |
| 8 | // Copyright: (c) 2007 Stefan Csomor | |
| 9 | // Licence: wxWindows licence | |
| 10 | // Notes: See http://developer.apple.com/documentation/CoreFoundation/Conceptual/CFBinaryData/index.html | |
| 11 | ///////////////////////////////////////////////////////////////////////////// | |
| 12 | /*! @header wx/mac/corefoundation/cfref.h | |
| 13 | @abstract wxCFDataRef template class | |
| 14 | */ | |
| 15 | ||
| 16 | #ifndef _WX_MAC_COREFOUNDATION_CFDATAREF_H__ | |
| 17 | #define _WX_MAC_COREFOUNDATION_CFDATAREF_H__ | |
| 18 | ||
| ef0e9220 | 19 | #include "wx/osx/core/cfref.h" |
| 5c6eb3a8 SC |
20 | |
| 21 | #include <CoreFoundation/CFData.h> | |
| 22 | ||
| 23 | /*! @class wxCFDataRef | |
| 24 | @discussion Properly retains/releases reference to CoreFoundation data objects | |
| 25 | */ | |
| 26 | class wxCFDataRef : public wxCFRef< CFDataRef > | |
| 27 | { | |
| 28 | public: | |
| 29 | /*! @method wxCFDataRef | |
| 30 | @abstract Creates a NULL data ref | |
| 31 | */ | |
| 32 | wxCFDataRef() | |
| 33 | {} | |
| 34 | ||
| 35 | typedef wxCFRef<CFDataRef> super_type; | |
| 36 | ||
| 37 | /*! @method wxCFDataRef | |
| 38 | @abstract Assumes ownership of p and creates a reference to it. | |
| 39 | @templatefield otherType Any type. | |
| 40 | @param p The raw pointer to assume ownership of. May be NULL. | |
| 41 | @discussion Like shared_ptr, it is assumed that the caller has a strong reference to p and intends | |
| 42 | to transfer ownership of that reference to this ref holder. If the object comes from | |
| 43 | a Create or Copy method then this is the correct behavior. If the object comes from | |
| 44 | a Get method then you must CFRetain it yourself before passing it to this constructor. | |
| 45 | A handy way to do this is to use the non-member wxCFRefFromGet factory funcion. | |
| 46 | This method is templated and takes an otherType *p. This prevents implicit conversion | |
| 47 | using an operator refType() in a different ref-holding class type. | |
| 48 | */ | |
| 49 | explicit wxCFDataRef(CFDataRef r) | |
| 50 | : super_type(r) | |
| 51 | {} | |
| 52 | ||
| 53 | /*! @method wxCFDataRef | |
| 54 | @abstract Copies a ref holder of the same type | |
| 55 | @param otherRef The other ref holder to copy. | |
| 56 | @discussion Ownership will be shared by the original ref and the newly created ref. That is, | |
| 57 | the object will be explicitly retained by this new ref. | |
| 58 | */ | |
| 59 | wxCFDataRef(const wxCFDataRef& otherRef) | |
| 60 | : super_type( otherRef ) | |
| 61 | {} | |
| 62 | ||
| 63 | /*! @method wxCFDataRef | |
| 64 | @abstract Copies raw data into a data ref | |
| 65 | @param data The raw data. | |
| 66 | @param length The data length. | |
| 67 | */ | |
| 68 | wxCFDataRef(const UInt8* data, CFIndex length) | |
| 69 | : super_type(CFDataCreate(kCFAllocatorDefault, data, length)) | |
| 70 | { | |
| 71 | } | |
| 72 | ||
| 73 | /*! @method GetLength | |
| 74 | @abstract returns the length in bytes of the data stored | |
| 75 | */ | |
| 76 | CFIndex GetLength() const | |
| 77 | { | |
| 78 | if ( m_ptr ) | |
| 79 | return CFDataGetLength( *this ); | |
| 80 | else | |
| 81 | return 0; | |
| 82 | } | |
| 83 | ||
| 84 | /*! @method GetBytes | |
| 85 | @abstract Copies the data into an external buffer | |
| 86 | @param range The desired range. | |
| 87 | @param buffer The target buffer. | |
| 88 | */ | |
| 89 | void GetBytes( CFRange range, UInt8 *buffer ) const | |
| 90 | { | |
| 91 | if ( m_ptr ) | |
| 92 | CFDataGetBytes(m_ptr, range, buffer); | |
| 93 | } | |
| 94 | }; | |
| 95 | ||
| 96 | #endif //ifndef _WX_MAC_COREFOUNDATION_CFDATAREF_H__ | |
| 97 |