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

diff --git a/src/common/imagpng.cpp b/src/common/imagpng.cpp
index f869ffedee51cb09a7e1601ed3860d7629e08267..cbbc10b261a4942099c16711aac48cefc8b98d85 100644 (file)
--- a/src/common/imagpng.cpp
+++ b/src/common/imagpng.cpp
@@ -22,7 +22,7 @@
   #include "wx/defs.h"
 #endif
 
   #include "wx/defs.h"
 #endif
 

-#if wxUSE_LIBPNG
+#if wxUSE_IMAGE && wxUSE_LIBPNG

 
 #include "wx/imagpng.h"
 #include "wx/bitmap.h"
 
 #include "wx/imagpng.h"
 #include "wx/bitmap.h"


@@ -57,17 +57,19 @@ IMPLEMENT_DYNAMIC_CLASS(wxPNGHandler,wxImageHandler)
 #if wxUSE_LIBPNG
 
 #if defined(__VISAGECPP__)
 #if wxUSE_LIBPNG
 
 #if defined(__VISAGECPP__)

-#define LINKAGEMODE _Optlink
+#define PNGLINKAGEMODE _Optlink
+#elif defined(__WATCOMC__)
+#define PNGLINKAGEMODE _cdecl

 #else
 #else

-#define LINKAGEMODE
+#define PNGLINKAGEMODE

 #endif
 
 #endif
 

-static void LINKAGEMODE _PNG_stream_reader( png_structp png_ptr, png_bytep data, png_size_t length )
+static void PNGLINKAGEMODE _PNG_stream_reader( png_structp png_ptr, png_bytep data, png_size_t length )

 {
     ((wxInputStream*) png_get_io_ptr( png_ptr )) -> Read(data, length);
 }
 
 {
     ((wxInputStream*) png_get_io_ptr( png_ptr )) -> Read(data, length);
 }
 

-static void LINKAGEMODE _PNG_stream_writer( png_structp png_ptr, png_bytep data, png_size_t length )
+static void PNGLINKAGEMODE _PNG_stream_writer( png_structp png_ptr, png_bytep data, png_size_t length )

 {
     ((wxOutputStream*) png_get_io_ptr( png_ptr )) -> Write(data, length);
 }
 {
     ((wxOutputStream*) png_get_io_ptr( png_ptr )) -> Write(data, length);
 }


@@ -75,7 +77,7 @@ static void LINKAGEMODE _PNG_stream_writer( png_structp png_ptr, png_bytep data,
 // from pngerror.c
 // so that the libpng doesn't send anything on stderr
 void
 // from pngerror.c
 // so that the libpng doesn't send anything on stderr
 void

-LINKAGEMODE png_silent_error(png_structp png_ptr, png_const_charp WXUNUSED(message))
+PNGLINKAGEMODE png_silent_error(png_structp png_ptr, png_const_charp WXUNUSED(message))

 {
 #ifdef USE_FAR_KEYWORD
    {
 {
 #ifdef USE_FAR_KEYWORD
    {


@@ -89,10 +91,16 @@ LINKAGEMODE png_silent_error(png_structp png_ptr, png_const_charp WXUNUSED(messa
 }
 
 void
 }
 
 void

-LINKAGEMODE png_silent_warning(png_structp WXUNUSED(png_ptr), png_const_charp WXUNUSED(message))
+PNGLINKAGEMODE png_silent_warning(png_structp WXUNUSED(png_ptr), png_const_charp WXUNUSED(message))

 {
 }
 
 {
 }
 

+// temporarily disable the warning C4611 (interaction between '_setjmp' and
+// C++ object destruction is non-portable) - I don't see any dtors here
+#ifdef __VISUALC__
+    #pragma warning(disable:4611)
+#endif /* VC++ */
+

 bool wxPNGHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose, int WXUNUSED(index) )
 {
     // VZ: as this function uses setjmp() the only fool proof error handling
 bool wxPNGHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose, int WXUNUSED(index) )
 {
     // VZ: as this function uses setjmp() the only fool proof error handling


@@ -267,7 +275,6 @@ bool wxPNGHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose
     return FALSE;
 }
 
     return FALSE;
 }
 

-

 bool wxPNGHandler::SaveFile( wxImage *image, wxOutputStream& stream, bool verbose )
 {
     {
 bool wxPNGHandler::SaveFile( wxImage *image, wxOutputStream& stream, bool verbose )
 {
     {


@@ -346,11 +353,15 @@ bool wxPNGHandler::SaveFile( wxImage *image, wxOutputStream& stream, bool verbos
     return TRUE;
 }
 
     return TRUE;
 }
 

+#ifdef __VISUALC__
+    #pragma warning(default:4611)
+#endif /* VC++ */
+

 bool wxPNGHandler::DoCanRead( wxInputStream& stream )
 {
     unsigned char hdr[4];
 
 bool wxPNGHandler::DoCanRead( wxInputStream& stream )
 {
     unsigned char hdr[4];
 

-    stream.Read(&hdr, 4);
+    stream.Read(hdr, 4);

     stream.SeekI(-4, wxFromCurrent);
     return (hdr[0] == 0x89 && hdr[1] == 'P' && hdr[2] == 'N' && hdr[3] == 'G');
 }
     stream.SeekI(-4, wxFromCurrent);
     return (hdr[0] == 0x89 && hdr[1] == 'P' && hdr[2] == 'N' && hdr[3] == 'G');
 }