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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  13 #pragma interface "fs_mem.h"
  14 #endif
  15
  16 #include "wx/wxprec.h"
  17
  18 #ifdef __BORLANDC__
  19 #pragma hdrstop
  20 #endif
  21
  22 #if wxUSE_FILESYSTEM
  23
  24 #include "wx/filesys.h"
  25
  26 #if wxUSE_GUI
  27     class WXDLLIMPEXP_CORE wxBitmap;
  28     class WXDLLIMPEXP_CORE wxImage;
  29 #endif // wxUSE_GUI
  30
  31 // ----------------------------------------------------------------------------
  32 // wxMemoryFSHandlerBase
  33 // ----------------------------------------------------------------------------
  34
  35 class WXDLLIMPEXP_BASE wxMemoryFSHandlerBase : public wxFileSystemHandler
  36 {
  37 public:
  38     wxMemoryFSHandlerBase();
  39     ~wxMemoryFSHandlerBase();
  40
  41     // Add file to list of files stored in memory. Stored data (bitmap, text or
  42     // raw data) will be copied into private memory stream and available under
  43     // name "memory:" + filename
  44     static void AddFile(const wxString& filename, const wxString& textdata);
  45     static void AddFile(const wxString& filename, const void *binarydata, size_t size);
  46
  47     // Remove file from memory FS and free occupied memory
  48     static void RemoveFile(const wxString& filename);
  49
  50     virtual bool CanOpen(const wxString& location);
  51     virtual wxFSFile* OpenFile(wxFileSystem& fs, const wxString& location);
  52     virtual wxString FindFirst(const wxString& spec, int flags = 0);
  53     virtual wxString FindNext();
  54
  55 protected:
  56     static bool CheckHash(const wxString& filename);
  57     static wxHashTable *m_Hash;
  58 };
  59
  60 // ----------------------------------------------------------------------------
  61 // wxMemoryFSHandler
  62 // ----------------------------------------------------------------------------
  63
  64 #if wxUSE_GUI
  65
  66 // add GUI-only operations to the base class
  67 class WXDLLIMPEXP_CORE wxMemoryFSHandler : public wxMemoryFSHandlerBase
  68 {
  69 public:
  70     // bring the base class versions into the scope, otherwise they would be
  71     // inaccessible in wxMemoryFSHandler
  72     // (unfortunately "using" can't be used as gcc 2.95 doesn't have it...)
  73     static void AddFile(const wxString& filename, const wxString& textdata)
  74     {
  75         wxMemoryFSHandlerBase::AddFile(filename, textdata);
  76     }
  77
  78     static void AddFile(const wxString& filename,
  79                         const void *binarydata,
  80                         size_t size)
  81     {
  82         wxMemoryFSHandlerBase::AddFile(filename, binarydata, size);
  83     }
  84
  85 #if wxUSE_IMAGE
  86     static void AddFile(const wxString& filename, wxImage& image, long type);
  87 #endif // wxUSE_IMAGE
  88
  89     static void AddFile(const wxString& filename,
  90                         const wxBitmap& bitmap,
  91                         long type);
  92 };
  93
  94 #else // !wxUSE_GUI
  95
  96 // just the same thing as the base class in wxBase
  97 class WXDLLIMPEXP_BASE wxMemoryFSHandler : public wxMemoryFSHandlerBase
  98 {
  99 };
 100
 101 #endif // wxUSE_GUI/!wxUSE_GUI
 102
 103 #endif // wxUSE_FILESYSTEM
 104
 105 #endif // _WX_FS_MEM_H_
 106