Upport scrolling changes and mouse wheel changes.

[wxWidgets.git] / include / wx / mstream.h

diff --git a/include/wx/mstream.h b/include/wx/mstream.h
index bdb4a659974d8a4c15fb0629c5c2136a14d2d2bf..d3a1e0ab9bc4aafd528b8a7392c6f9b3ea586ab3 100644 (file)
--- a/include/wx/mstream.h
+++ b/include/wx/mstream.h
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        mstream.h
+// Name:        wx/mstream.h
 // Purpose:     Memory stream classes
 // Author:      Guilhem Lavaux
 // Modified by:
@@ -12,56 +12,98 @@
 #ifndef _WX_WXMMSTREAM_H__
 #define _WX_WXMMSTREAM_H__
 
-#include "wx/stream.h"
+#include "wx/defs.h"
 
 #if wxUSE_STREAMS
 
-class WXDLLEXPORT wxMemoryInputStream : public wxInputStream
+#include "wx/stream.h"
+
+class WXDLLIMPEXP_BASE wxMemoryOutputStream;
+
+class WXDLLIMPEXP_BASE wxMemoryInputStream : public wxInputStream
 {
 public:
-    wxMemoryInputStream(const char *data, size_t length);
+    wxMemoryInputStream(const void *data, size_t length);
+    wxMemoryInputStream(const wxMemoryOutputStream& stream);
+    wxMemoryInputStream(wxInputStream& stream,
+                        wxFileOffset lenFile = wxInvalidOffset)
+    {
+        InitFromStream(stream, lenFile);
+    }
+    wxMemoryInputStream(wxMemoryInputStream& stream)
+    {
+        InitFromStream(stream, wxInvalidOffset);
+    }
+
     virtual ~wxMemoryInputStream();
-    virtual size_t GetSize() const { return m_length; }
-    virtual bool Eof() const;
+    virtual wxFileOffset GetLength() const { return m_length; }
+    virtual bool IsSeekable() const { return true; }
+
+    virtual char Peek();
+    virtual bool CanRead() const;
 
-    char Peek();
+    wxStreamBuffer *GetInputStreamBuffer() const { return m_i_streambuf; }
 
-    wxStreamBuffer *InputStreamBuffer() const { return m_i_streambuf; }
+#if WXWIN_COMPATIBILITY_2_6
+    // deprecated, compatibility only
+    wxDEPRECATED( wxStreamBuffer *InputStreamBuffer() const );
+#endif // WXWIN_COMPATIBILITY_2_6
 
 protected:
     wxStreamBuffer *m_i_streambuf;
 
     size_t OnSysRead(void *buffer, size_t nbytes);
-    off_t OnSysSeek(off_t pos, wxSeekMode mode);
-    off_t OnSysTell() const;
+    wxFileOffset OnSysSeek(wxFileOffset pos, wxSeekMode mode);
+    wxFileOffset OnSysTell() const;
 
 private:
+    // common part of ctors taking wxInputStream
+    void InitFromStream(wxInputStream& stream, wxFileOffset lenFile);
+
     size_t m_length;
+
+    // copy ctor is implemented above: it copies the other stream in this one
+    DECLARE_ABSTRACT_CLASS(wxMemoryInputStream)
+    DECLARE_NO_ASSIGN_CLASS(wxMemoryInputStream)
 };
 
-class WXDLLEXPORT wxMemoryOutputStream : public wxOutputStream
+class WXDLLIMPEXP_BASE wxMemoryOutputStream : public wxOutputStream
 {
 public:
-    wxMemoryOutputStream(char *data = NULL, size_t length = 0);
+    // if data is !NULL it must be allocated with malloc()
+    wxMemoryOutputStream(void *data = NULL, size_t length = 0);
     virtual ~wxMemoryOutputStream();
-    virtual size_t GetSize() const { return m_o_streambuf->GetLastAccess(); }
+    virtual wxFileOffset GetLength() const { return m_o_streambuf->GetLastAccess(); }
+    virtual bool IsSeekable() const { return true; }
+
+    size_t CopyTo(void *buffer, size_t len) const;
 
-    wxStreamBuffer *OutputStreamBuffer() const { return m_o_streambuf; }
+    wxStreamBuffer *GetOutputStreamBuffer() const { return m_o_streambuf; }
 
-    size_t CopyTo(char *buffer, size_t len) const;
+#if WXWIN_COMPATIBILITY_2_6
+    // deprecated, compatibility only
+    wxDEPRECATED( wxStreamBuffer *OutputStreamBuffer() const );
+#endif // WXWIN_COMPATIBILITY_2_6
 
 protected:
     wxStreamBuffer *m_o_streambuf;
 
 protected:
     size_t OnSysWrite(const void *buffer, size_t nbytes);
-    off_t OnSysSeek(off_t pos, wxSeekMode mode);
-    off_t OnSysTell() const;
+    wxFileOffset OnSysSeek(wxFileOffset pos, wxSeekMode mode);
+    wxFileOffset OnSysTell() const;
+
+    DECLARE_DYNAMIC_CLASS(wxMemoryOutputStream)
+    DECLARE_NO_COPY_CLASS(wxMemoryOutputStream)
 };
 
+#if WXWIN_COMPATIBILITY_2_6
+    inline wxStreamBuffer *wxMemoryInputStream::InputStreamBuffer() const { return m_i_streambuf; }
+    inline wxStreamBuffer *wxMemoryOutputStream::OutputStreamBuffer() const { return m_o_streambuf; }
+#endif // WXWIN_COMPATIBILITY_2_6
+
 #endif
   // wxUSE_STREAMS
 
 #endif
   // _WX_WXMMSTREAM_H__
-