Save the alpha values if the image has an alpha channel

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

diff --git a/src/common/gifdecod.cpp b/src/common/gifdecod.cpp
index f7acdfb4e67017a8a8d6cbf39632ab1138589bb0..bf5280b4ef0e06221928b33c4b0ec6b5becff71c 100644 (file)
--- a/src/common/gifdecod.cpp
+++ b/src/common/gifdecod.cpp
@@ -8,7 +8,7 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 

-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)

 #pragma implementation "gifdecod.h"
 #endif
 
 #pragma implementation "gifdecod.h"
 #endif
 


@@ -21,6 +21,7 @@
 
 #ifndef WX_PRECOMP
 #  include "wx/defs.h"
 
 #ifndef WX_PRECOMP
 #  include "wx/defs.h"

+#  include "wx/palette.h"

 #endif
 
 #if wxUSE_STREAMS && wxUSE_GIF
 #endif
 
 #if wxUSE_STREAMS && wxUSE_GIF


@@ -279,7 +280,7 @@ bool wxGIFDecoder::GoFrame(int which)
     {
         m_pimage = m_pfirst;
 
     {
         m_pimage = m_pfirst;
 

-        for (i = 1; i < which; i++)
+        for (i = 0; i < which; i++)

             m_pimage = m_pimage->next;
 
         return TRUE;
             m_pimage = m_pimage->next;
 
         return TRUE;


@@ -620,7 +621,7 @@ bool wxGIFDecoder::CanRead()
     if ( !m_f->Read(buf, WXSIZEOF(buf)) )
         return FALSE;
 
     if ( !m_f->Read(buf, WXSIZEOF(buf)) )
         return FALSE;
 

-    m_f->SeekI(-WXSIZEOF(buf), wxFromCurrent);
+    m_f->SeekI(-(off_t)WXSIZEOF(buf), wxFromCurrent);

 
     return memcmp(buf, "GIF", WXSIZEOF(buf)) == 0;
 }
 
     return memcmp(buf, "GIF", WXSIZEOF(buf)) == 0;
 }