Added ComputeHistogram

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

diff --git a/src/common/imagpng.cpp b/src/common/imagpng.cpp
index a2f0c435ed3a460b8279a846402814c432290f94..6a71a8c263383aecf003037b487399a89daab170 100644 (file)
--- a/src/common/imagpng.cpp
+++ b/src/common/imagpng.cpp
@@ -53,9 +53,7 @@
 // wxPNGHandler
 //-----------------------------------------------------------------------------
 
-#if !USE_SHARED_LIBRARIES
 IMPLEMENT_DYNAMIC_CLASS(wxPNGHandler,wxImageHandler)
-#endif
 
 #if wxUSE_LIBPNG
 
@@ -96,7 +94,7 @@ LINKAGEMODE png_silent_warning(png_structp WXUNUSED(png_ptr), png_const_charp WX
 {
 }
 
-bool wxPNGHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose)
+bool wxPNGHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose, int WXUNUSED(index) )
 {
     // VZ: as this function uses setjmp() the only fool proof error handling
     //     method is to use goto (setjmp is not really C++ dtors friendly...)
@@ -167,6 +165,7 @@ bool wxPNGHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose
     {
         int transp = 0;
         png_read_image( png_ptr, lines );
+        png_read_end( png_ptr, info_ptr );
         png_destroy_read_struct( &png_ptr, &info_ptr, (png_infopp) NULL );
         unsigned char *ptr = image->GetData();
         if ((color_type == PNG_COLOR_TYPE_GRAY) ||
@@ -243,7 +242,8 @@ bool wxPNGHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose
  error_nolines:
     lines = NULL; // called from before it was set
  error:
-    wxLogError(_("Couldn't load a PNG image - probably file is corrupted."));
+    if (verbose)
+       wxLogError(_("Couldn't load a PNG image - file is corrupted or not enough memory."));
 
     if ( image->Ok() )
     {
@@ -278,7 +278,7 @@ bool wxPNGHandler::SaveFile( wxImage *image, wxOutputStream& stream, bool verbos
             return FALSE;
         }
 
-       if (!verbose) png_set_error_fn(png_ptr, (png_voidp)NULL, png_silent_error, png_silent_warning);
+        if (!verbose) png_set_error_fn(png_ptr, (png_voidp)NULL, png_silent_error, png_silent_warning);
 
         png_infop info_ptr = png_create_info_struct(png_ptr);
         if (info_ptr == NULL)
@@ -324,7 +324,7 @@ bool wxPNGHandler::SaveFile( wxImage *image, wxOutputStream& stream, bool verbos
                 data[(x << 2) + 0] = *ptr++;
                 data[(x << 2) + 1] = *ptr++;
                 data[(x << 2) + 2] = *ptr++;
-                if (( !image->HasMask() ) || \
+                if (( !image->HasMask() ) || \
                     (data[(x << 2) + 0] != image->GetMaskRed()) || \
                     (data[(x << 2) + 1] != image->GetMaskGreen()) || \
                     (data[(x << 2) + 2] != image->GetMaskBlue()))
@@ -347,7 +347,7 @@ bool wxPNGHandler::SaveFile( wxImage *image, wxOutputStream& stream, bool verbos
     return TRUE;
 }
 
-bool wxPNGHandler::CanRead( wxInputStream& stream )
+bool wxPNGHandler::DoCanRead( wxInputStream& stream )
 {
     unsigned char hdr[4];