fix Purpose comment

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

diff --git a/src/common/imagpng.cpp b/src/common/imagpng.cpp
index 8acc531db200c93799993c2cb59546d5f06dd702..21bcf6ee4d55e5568b77ef520d26dfb39f7e13fd 100644 (file)
--- a/src/common/imagpng.cpp
+++ b/src/common/imagpng.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        src/common/imagepng.cpp
+// Name:        src/common/imagpng.cpp
 // Purpose:     wxImage PNG handler
 // Author:      Robert Roebling
 // RCS-ID:      $Id$
@@ -28,26 +28,16 @@
 
 #ifndef WX_PRECOMP
     #include "wx/log.h"
-    #include "wx/app.h"
-    #include "wx/bitmap.h"
-    #include "wx/module.h"
+    #include "wx/intl.h"
+    #include "wx/palette.h"
+    #include "wx/stream.h"
 #endif
 
 #include "png.h"
-#include "wx/filefn.h"
-#include "wx/wfstream.h"
-#include "wx/intl.h"
-#include "wx/palette.h"
 
 // For memcpy
 #include <string.h>
 
-#ifdef __SALFORDC__
-#ifdef FAR
-#undef FAR
-#endif
-#endif
-
 // ----------------------------------------------------------------------------
 // constants
 // ----------------------------------------------------------------------------
@@ -63,8 +53,6 @@ enum Transparency
     Transparency_Alpha
 };
 
-static const double INCHES_IN_METER = 39.3700787;
-
 // ----------------------------------------------------------------------------
 // local functions
 // ----------------------------------------------------------------------------
@@ -107,7 +95,9 @@ IMPLEMENT_DYNAMIC_CLASS(wxPNGHandler,wxImageHandler)
 #if wxUSE_STREAMS
 
 #ifndef PNGLINKAGEMODE
-    #ifdef __WATCOMC__
+    #ifdef PNGAPI
+        #define PNGLINKAGEMODE PNGAPI
+    #elif defined(__WATCOMC__)
         // we need an explicit cdecl for Watcom, at least according to
         //
         // http://sf.net/tracker/index.php?func=detail&aid=651492&group_id=9863&atid=109863
@@ -755,8 +745,11 @@ bool wxPNGHandler::SaveFile( wxImage *image, wxOutputStream& stream, bool verbos
     switch ( GetResolutionFromOptions(*image, &resX, &resY) )
     {
         case wxIMAGE_RESOLUTION_INCHES:
-            resX *= INCHES_IN_METER;
-            resY *= INCHES_IN_METER;
+            {
+                const double INCHES_IN_METER = 10000.0 / 254;
+                resX = int(resX * INCHES_IN_METER);
+                resY = int(resY * INCHES_IN_METER);
+            }
             break;
 
         case wxIMAGE_RESOLUTION_CM: