code clean up, avoid duplicating the same code in font.cpp and fontutil.cpp

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

diff --git a/src/common/imagpng.cpp b/src/common/imagpng.cpp
index 8272a0d383934b751860528b540b15e7a9e83091..c8054c25e4b789f5abb64ed06b940d459bd317c2 100644 (file)
--- a/src/common/imagpng.cpp
+++ b/src/common/imagpng.cpp
@@ -22,7 +22,7 @@
   #include "wx/defs.h"
 #endif
 
-#if wxUSE_LIBPNG
+#if wxUSE_IMAGE && wxUSE_LIBPNG
 
 #include "wx/imagpng.h"
 #include "wx/bitmap.h"
@@ -56,18 +56,16 @@ IMPLEMENT_DYNAMIC_CLASS(wxPNGHandler,wxImageHandler)
 
 #if wxUSE_LIBPNG
 
-#if defined(__VISAGECPP__)
-#define LINKAGEMODE _Optlink
-#else
-#define LINKAGEMODE
+#ifndef PNGLINKAGEMODE
+  #define PNGLINKAGEMODE LINKAGEMODE
 #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);
 }
 
-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);
 }
@@ -75,7 +73,7 @@ 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
-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
    {
@@ -89,7 +87,7 @@ LINKAGEMODE png_silent_error(png_structp png_ptr, png_const_charp WXUNUSED(messa
 }
 
 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))
 {
 }
 
@@ -359,7 +357,7 @@ 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');
 }