projects / wxWidgets.git / blame
| Commit | Line | Data |
|---|---|---|
| 1737035f VZ |
1 | /////////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: ole/dataobj.h | |
| 3 | // Purpose: declaration of the wxDataObject class | |
| 4 | // Author: Vadim Zeitlin | |
| 5 | // Modified by: | |
| 6 | // Created: 10.05.98 | |
| 7 | // RCS-ID: $Id$ | |
| 8 | // Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr> | |
| 9 | // Licence: wxWindows license | |
| 10 | /////////////////////////////////////////////////////////////////////////////// | |
| 11 | ||
| 12 | #ifndef _OLEDATAOBJ_H | |
| 13 | #define _OLEDATAOBJ_H | |
| 14 | ||
| 15 | // ---------------------------------------------------------------------------- | |
| 16 | // forward declarations | |
| 17 | // ---------------------------------------------------------------------------- | |
| 18 | struct IDataObject; | |
| 19 | ||
| 20 | // ---------------------------------------------------------------------------- | |
| 21 | // wxDataObject is a "smart" and polymorphic piece of data. | |
| 22 | // | |
| 23 | // @@@ it's currently "read-only" from COM point of view, i.e. we don't support | |
| 24 | // SetData. We don't support all advise functions neither (but it's easy to | |
| 25 | // do if we really want them) | |
| 26 | // ---------------------------------------------------------------------------- | |
| 27 | ||
| 28 | class wxDataObject | |
| 29 | { | |
| 30 | public: | |
| 31 | // all data formats (values are the same as in windows.h, do not change!) | |
| 32 | enum StdFormat | |
| 33 | { | |
| 34 | Invalid, | |
| 35 | Text, | |
| 36 | Bitmap, | |
| 37 | MetafilePict, | |
| 38 | Sylk, | |
| 39 | Dif, | |
| 40 | Tiff, | |
| 41 | OemText, | |
| 42 | Dib, | |
| 43 | Palette, | |
| 44 | Pendata, | |
| 45 | Riff, | |
| 46 | Wave, | |
| 47 | UnicodeText, | |
| 48 | EnhMetafile, | |
| 49 | Hdrop, | |
| 50 | Locale, | |
| 51 | Max | |
| 52 | }; | |
| 53 | ||
| 54 | #ifdef __DEBUG__ | |
| 55 | // function to return symbolic name of clipboard format (debug messages) | |
| 56 | static const char *GetFormatName(wxDataFormat format); | |
| 57 | #endif | |
| 58 | ||
| 59 | // ctor & dtor | |
| 60 | wxDataObject(); | |
| 61 | ~wxDataObject(); | |
| 62 | ||
| 63 | // pure virtuals to override | |
| 64 | // get the best suited format for our data | |
| 65 | virtual wxDataFormat GetPreferredFormat() const = 0; | |
| 66 | // decide if we support this format (should be one of values of | |
| 67 | // StdFormat enumerations or a user-defined format) | |
| 68 | virtual bool IsSupportedFormat(wxDataFormat format) const = 0; | |
| 69 | // get the (total) size of data | |
| 70 | virtual uint GetDataSize() const = 0; | |
| 71 | // copy raw data to provided pointer | |
| 72 | virtual void GetDataHere(void *pBuf) const = 0; | |
| 73 | ||
| 74 | // accessors | |
| 75 | // retrieve IDataObject interface (for other OLE related classes) | |
| 76 | IDataObject *GetInterface() const { return m_pIDataObject; } | |
| 77 | ||
| 78 | private: | |
| 79 | IDataObject *m_pIDataObject; // pointer to the COM interface | |
| 80 | }; | |
| 81 | ||
| 82 | // ---------------------------------------------------------------------------- | |
| 83 | // wxTextDataObject is a specialization of wxDataObject for text data | |
| 84 | // ---------------------------------------------------------------------------- | |
| 85 | class wxTextDataObject : public wxDataObject | |
| 86 | { | |
| 87 | public: | |
| 88 | // ctors | |
| 89 | wxTextDataObject(); | |
| 90 | wxTextDataObject(const wxString& strText) : m_strText(strText) { } | |
| 91 | void Init(const wxString& strText) { m_strText = strText; } | |
| 92 | ||
| 93 | // implement base class pure virtuals | |
| 94 | virtual wxDataFormat GetPreferredFormat() const | |
| 95 | { return wxDataObject::Text; } | |
| 96 | virtual bool IsSupportedFormat(wxDataFormat format) const | |
| 97 | { return format == wxDataObject::Text || format == wxDataObject::Locale; } | |
| 98 | virtual uint GetDataSize() const | |
| 99 | { return m_strText.Len() + 1; } // +1 for trailing '\0'of course | |
| 100 | virtual void GetDataHere(void *pBuf) const | |
| 101 | { memcpy(pBuf, m_strText.c_str(), GetDataSize()); } | |
| 102 | ||
| 103 | private: | |
| 104 | wxString m_strText; | |
| 105 | }; | |
| 106 | ||
| 107 | // ---------------------------------------------------------------------------- | |
| 108 | // @@@ TODO: wx{Bitmap|Metafile|...}DataObject | |
| 109 | // ---------------------------------------------------------------------------- | |
| 110 | ||
| 111 | #endif //_OLEDATAOBJ_H |