include/wx/fs_mem.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        fs_mem.h
   3 // Purpose:     in-memory file system
   4 // Author:      Vaclav Slavik
   5 // Copyright:   (c) 2000 Vaclav Slavik
   6 // Licence:     wxWindows licence
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9 #ifndef _WX_FS_MEM_H_
  10 #define _WX_FS_MEM_H_
  11
  12 #include "wx/defs.h"
  13
  14 #if wxUSE_FILESYSTEM
  15
  16 #include "wx/filesys.h"
  17
  18 #if wxUSE_GUI
  19     class WXDLLIMPEXP_CORE wxBitmap;
  20     class WXDLLIMPEXP_CORE wxImage;
  21 #endif // wxUSE_GUI
  22
  23 // ----------------------------------------------------------------------------
  24 // wxMemoryFSHandlerBase
  25 // ----------------------------------------------------------------------------
  26
  27 class WXDLLIMPEXP_BASE wxMemoryFSHandlerBase : public wxFileSystemHandler
  28 {
  29 public:
  30     wxMemoryFSHandlerBase();
  31     virtual ~wxMemoryFSHandlerBase();
  32
  33     // Add file to list of files stored in memory. Stored data (bitmap, text or
  34     // raw data) will be copied into private memory stream and available under
  35     // name "memory:" + filename
  36     static void AddFile(const wxString& filename, const wxString& textdata);
  37     static void AddFile(const wxString& filename, const void *binarydata, size_t size);
  38
  39     // Remove file from memory FS and free occupied memory
  40     static void RemoveFile(const wxString& filename);
  41
  42     virtual bool CanOpen(const wxString& location);
  43     virtual wxFSFile* OpenFile(wxFileSystem& fs, const wxString& location);
  44     virtual wxString FindFirst(const wxString& spec, int flags = 0);
  45     virtual wxString FindNext();
  46
  47 protected:
  48     static bool CheckHash(const wxString& filename);
  49     static wxHashTable *m_Hash;
  50 };
  51
  52 // ----------------------------------------------------------------------------
  53 // wxMemoryFSHandler
  54 // ----------------------------------------------------------------------------
  55
  56 #if wxUSE_GUI
  57
  58 // add GUI-only operations to the base class
  59 class WXDLLIMPEXP_CORE wxMemoryFSHandler : public wxMemoryFSHandlerBase
  60 {
  61 public:
  62     // bring the base class versions into the scope, otherwise they would be
  63     // inaccessible in wxMemoryFSHandler
  64     // (unfortunately "using" can't be used as gcc 2.95 doesn't have it...)
  65     static void AddFile(const wxString& filename, const wxString& textdata)
  66     {
  67         wxMemoryFSHandlerBase::AddFile(filename, textdata);
  68     }
  69
  70     static void AddFile(const wxString& filename,
  71                         const void *binarydata,
  72                         size_t size)
  73     {
  74         wxMemoryFSHandlerBase::AddFile(filename, binarydata, size);
  75     }
  76
  77 #if wxUSE_IMAGE
  78     static void AddFile(const wxString& filename,
  79                         const wxImage& image,
  80                         long type);
  81
  82     static void AddFile(const wxString& filename,
  83                         const wxBitmap& bitmap,
  84                         long type);
  85 #endif // wxUSE_IMAGE
  86
  87 };
  88
  89 #else // !wxUSE_GUI
  90
  91 // just the same thing as the base class in wxBase
  92 class WXDLLIMPEXP_BASE wxMemoryFSHandler : public wxMemoryFSHandlerBase
  93 {
  94 };
  95
  96 #endif // wxUSE_GUI/!wxUSE_GUI
  97
  98 #endif // wxUSE_FILESYSTEM
  99
 100 #endif // _WX_FS_MEM_H_
 101