reset the tooltip text before changing it, this apparently prevents a spurious redraw...

[wxWidgets.git] / src / common / mstream.cpp

diff --git a/src/common/mstream.cpp b/src/common/mstream.cpp
index 9226ce4461282164c3f847f24f1b9feb85ec5fac..24252d273c5e9871cf22cb19bb6d090c5d2663f2 100644 (file)
--- a/src/common/mstream.cpp
+++ b/src/common/mstream.cpp
@@ -6,7 +6,7 @@
 // Created:     04/01/98
 // RCS-ID:      $Id$
 // Copyright:   (c) Guilhem Lavaux
 // Created:     04/01/98
 // RCS-ID:      $Id$
 // Copyright:   (c) Guilhem Lavaux

-// Licence:     wxWindows license
+// Licence:     wxWindows licence

 /////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================
 /////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================


@@ -17,23 +17,23 @@
 // headers
 // ----------------------------------------------------------------------------
 
 // headers
 // ----------------------------------------------------------------------------
 

-#ifdef __GNUG__
-#pragma implementation "mstream.h"
-#endif
-

 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__

-  #pragma hdrstop
+    #pragma hdrstop

 #endif
 
 #if wxUSE_STREAMS
 
 #endif
 
 #if wxUSE_STREAMS
 

-#include <stdlib.h>
-#include "wx/stream.h"

 #include "wx/mstream.h"
 
 #include "wx/mstream.h"
 

+#ifndef   WX_PRECOMP
+    #include  "wx/stream.h"
+#endif  //WX_PRECOMP
+
+#include <stdlib.h>
+

 // ============================================================================
 // implementation
 // ============================================================================
 // ============================================================================
 // implementation
 // ============================================================================


@@ -42,16 +42,68 @@
 // wxMemoryInputStream
 // ----------------------------------------------------------------------------
 
 // wxMemoryInputStream
 // ----------------------------------------------------------------------------
 

+IMPLEMENT_ABSTRACT_CLASS(wxMemoryInputStream, wxInputStream)
+

 wxMemoryInputStream::wxMemoryInputStream(const void *data, size_t len)
 {
     m_i_streambuf = new wxStreamBuffer(wxStreamBuffer::read);
     m_i_streambuf->SetBufferIO((void *)data, len); // const_cast
     m_i_streambuf->SetIntPosition(0); // seek to start pos
 wxMemoryInputStream::wxMemoryInputStream(const void *data, size_t len)
 {
     m_i_streambuf = new wxStreamBuffer(wxStreamBuffer::read);
     m_i_streambuf->SetBufferIO((void *)data, len); // const_cast
     m_i_streambuf->SetIntPosition(0); // seek to start pos

-    m_i_streambuf->Fixed(TRUE);
+    m_i_streambuf->Fixed(true);
+
+    m_length = len;
+}

 
 

+wxMemoryInputStream::wxMemoryInputStream(const wxMemoryOutputStream& stream)
+{
+    const wxFileOffset lenFile = stream.GetLength();
+    if ( lenFile == wxInvalidOffset )
+    {
+        m_i_streambuf = NULL;
+        m_lasterror = wxSTREAM_EOF;
+        return;
+    }
+
+    const size_t len = wx_truncate_cast(size_t, lenFile);
+    wxASSERT_MSG( len == lenFile + size_t(0), _T("huge files not supported") );
+
+    m_i_streambuf = new wxStreamBuffer(wxStreamBuffer::read);
+    m_i_streambuf->SetBufferIO(len); // create buffer
+    stream.CopyTo(m_i_streambuf->GetBufferStart(), len);
+    m_i_streambuf->SetIntPosition(0); // seek to start pos
+    m_i_streambuf->Fixed(true);

     m_length = len;
 }
 
     m_length = len;
 }
 

+void
+wxMemoryInputStream::InitFromStream(wxInputStream& stream, wxFileOffset lenFile)
+{
+    if ( lenFile == wxInvalidOffset )
+        lenFile = stream.GetLength();
+
+    if ( lenFile == wxInvalidOffset )
+    {
+        m_i_streambuf = NULL;
+        m_lasterror = wxSTREAM_EOF;
+        return;
+    }
+
+    const size_t len = wx_truncate_cast(size_t, lenFile);
+    wxASSERT_MSG( (wxFileOffset)len == lenFile, _T("huge files not supported") );
+
+    m_i_streambuf = new wxStreamBuffer(wxStreamBuffer::read);
+    m_i_streambuf->SetBufferIO(len); // create buffer
+    stream.Read(m_i_streambuf->GetBufferStart(), len);
+    m_i_streambuf->SetIntPosition(0); // seek to start pos
+    m_i_streambuf->Fixed(true);
+    m_length = stream.LastRead();
+}
+
+bool wxMemoryInputStream::CanRead() const
+{
+    return m_i_streambuf->GetIntPosition() != m_length;
+}
+

 wxMemoryInputStream::~wxMemoryInputStream()
 {
     delete m_i_streambuf;
 wxMemoryInputStream::~wxMemoryInputStream()
 {
     delete m_i_streambuf;


@@ -60,13 +112,15 @@ wxMemoryInputStream::~wxMemoryInputStream()
 char wxMemoryInputStream::Peek()
 {
     char *buf = (char *)m_i_streambuf->GetBufferStart();
 char wxMemoryInputStream::Peek()
 {
     char *buf = (char *)m_i_streambuf->GetBufferStart();

+    size_t pos = m_i_streambuf->GetIntPosition();
+    if ( pos == m_length )
+    {
+        m_lasterror = wxSTREAM_READ_ERROR;

 
 

-    return buf[m_i_streambuf->GetIntPosition()];
-}
+        return 0;
+    }

 
 

-bool wxMemoryInputStream::Eof() const
-{
-    return !m_i_streambuf->GetBytesLeft();
+    return buf[pos];

 }
 
 size_t wxMemoryInputStream::OnSysRead(void *buffer, size_t nbytes)
 }
 
 size_t wxMemoryInputStream::OnSysRead(void *buffer, size_t nbytes)


@@ -80,17 +134,17 @@ size_t wxMemoryInputStream::OnSysRead(void *buffer, size_t nbytes)
     }
 
     m_i_streambuf->Read(buffer, nbytes);
     }
 
     m_i_streambuf->Read(buffer, nbytes);

-    m_lasterror = wxSTREAM_NOERROR;
+    m_lasterror = wxSTREAM_NO_ERROR;

 
     return m_i_streambuf->GetIntPosition() - pos;
 }
 
 
     return m_i_streambuf->GetIntPosition() - pos;
 }
 

-off_t wxMemoryInputStream::OnSysSeek(off_t pos, wxSeekMode mode)
+wxFileOffset wxMemoryInputStream::OnSysSeek(wxFileOffset pos, wxSeekMode mode)

 {
     return m_i_streambuf->Seek(pos, mode);
 }
 
 {
     return m_i_streambuf->Seek(pos, mode);
 }
 

-off_t wxMemoryInputStream::OnSysTell() const
+wxFileOffset wxMemoryInputStream::OnSysTell() const

 {
     return m_i_streambuf->Tell();
 }
 {
     return m_i_streambuf->Tell();
 }


@@ -99,13 +153,15 @@ off_t wxMemoryInputStream::OnSysTell() const
 // wxMemoryOutputStream
 // ----------------------------------------------------------------------------
 
 // wxMemoryOutputStream
 // ----------------------------------------------------------------------------
 

+IMPLEMENT_DYNAMIC_CLASS(wxMemoryOutputStream, wxOutputStream)
+

 wxMemoryOutputStream::wxMemoryOutputStream(void *data, size_t len)
 {
     m_o_streambuf = new wxStreamBuffer(wxStreamBuffer::write);
     if ( data )
         m_o_streambuf->SetBufferIO(data, len);
 wxMemoryOutputStream::wxMemoryOutputStream(void *data, size_t len)
 {
     m_o_streambuf = new wxStreamBuffer(wxStreamBuffer::write);
     if ( data )
         m_o_streambuf->SetBufferIO(data, len);

-    m_o_streambuf->Fixed(FALSE);
-    m_o_streambuf->Flushable(FALSE);
+    m_o_streambuf->Fixed(false);
+    m_o_streambuf->Flushable(false);

 }
 
 wxMemoryOutputStream::~wxMemoryOutputStream()
 }
 
 wxMemoryOutputStream::~wxMemoryOutputStream()


@@ -126,12 +182,12 @@ size_t wxMemoryOutputStream::OnSysWrite(const void *buffer, size_t nbytes)
     return newpos - oldpos;
 }
 
     return newpos - oldpos;
 }
 

-off_t wxMemoryOutputStream::OnSysSeek(off_t pos, wxSeekMode mode)
+wxFileOffset wxMemoryOutputStream::OnSysSeek(wxFileOffset pos, wxSeekMode mode)

 {
     return m_o_streambuf->Seek(pos, mode);
 }
 
 {
     return m_o_streambuf->Seek(pos, mode);
 }
 

-off_t wxMemoryOutputStream::OnSysTell() const
+wxFileOffset wxMemoryOutputStream::OnSysTell() const

 {
     return m_o_streambuf->Tell();
 }
 {
     return m_o_streambuf->Tell();
 }