#include "wx/wxprec.h"
#ifdef __BORLANDC__
- #pragma hdrstop
-#endif
-
-#ifndef WX_PRECOMP
- #include "wx/defs.h"
+ #pragma hdrstop
#endif
#if wxUSE_IMAGE && wxUSE_LIBPNG
#include "wx/imagpng.h"
-#include "wx/bitmap.h"
-#include "wx/debug.h"
-#include "wx/log.h"
-#include "wx/app.h"
+
+#ifndef WX_PRECOMP
+ #include "wx/log.h"
+ #include "wx/app.h"
+ #include "wx/bitmap.h"
+ #include "wx/module.h"
+#endif
+
#include "png.h"
#include "wx/filefn.h"
#include "wx/wfstream.h"
#include "wx/intl.h"
-#include "wx/module.h"
+#include "wx/palette.h"
// For memcpy
#include <string.h>
#if wxUSE_STREAMS
#ifndef PNGLINKAGEMODE
- #if defined(__WATCOMC__) && ( defined(__WXMSW__) || __WATCOMC__ > 1230 )
+ #if defined(__WATCOMC__) && ( defined(__WXMSW__) || defined(__WXMGL__) )
// 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
WX_PNG_INFO(png_ptr)->stream.out->Write(data, length);
}
-// from pngerror.c
-// so that the libpng doesn't send anything on stderr
-void
-PNGLINKAGEMODE wx_png_error(png_structp WXUNUSED(png_ptr), png_const_charp message)
-{
- wxLogFatalError( wxString::FromAscii(message) );
-}
-
void
PNGLINKAGEMODE wx_png_warning(png_structp png_ptr, png_const_charp message)
{
wxLogWarning( wxString::FromAscii(message) );
}
+// from pngerror.c
+// so that the libpng doesn't send anything on stderr
+void
+PNGLINKAGEMODE wx_png_error(png_structp png_ptr, png_const_charp message)
+{
+ wx_png_warning(NULL, message);
+
+ // we're not using libpng built-in jump buffer (see comment before
+ // wxPNGInfoStruct above) so we have to return ourselves, otherwise libpng
+ // would just abort
+ longjmp(WX_PNG_INFO(png_ptr)->jmpbuf, 1);
+}
+
} // extern "C"
// ----------------------------------------------------------------------------
bool verbose,
int WXUNUSED(index))
{
- // VZ: as this function uses setjmp() the only fool proof error handling
+ // VZ: as this function uses setjmp() the only fool-proof error handling
// method is to use goto (setjmp is not really C++ dtors friendly...)
unsigned char **lines = NULL;
png_infop info_ptr = (png_infop) NULL;
wxPNGInfoStruct wxinfo;
+ png_uint_32 i, width, height = 0;
+ int bit_depth, color_type, interlace_type;
+
wxinfo.verbose = verbose;
wxinfo.stream.in = &stream;
if (setjmp(wxinfo.jmpbuf))
goto error;
- png_uint_32 i, width, height;
- int bit_depth, color_type, interlace_type;
-
png_read_info( png_ptr, info_ptr );
png_get_IHDR( png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, &interlace_type, (int*) NULL, (int*) NULL );
png_read_image( png_ptr, lines );
png_read_end( png_ptr, info_ptr );
+
+#if wxUSE_PALETTE
+ if (color_type == PNG_COLOR_TYPE_PALETTE)
+ {
+ const size_t ncolors = info_ptr->num_palette;
+ unsigned char* r = new unsigned char[ncolors];
+ unsigned char* g = new unsigned char[ncolors];
+ unsigned char* b = new unsigned char[ncolors];
+
+ for (size_t j = 0; j < ncolors; j++)
+ {
+ r[j] = info_ptr->palette[j].red;
+ g[j] = info_ptr->palette[j].green;
+ b[j] = info_ptr->palette[j].blue;
+ }
+
+ image->SetPalette(wxPalette(ncolors, r, g, b));
+ delete[] r;
+ delete[] g;
+ delete[] b;
+ }
+#endif // wxUSE_PALETTE
+
png_destroy_read_struct( &png_ptr, &info_ptr, (png_infopp) NULL );
// loaded successfully, now init wxImage with this data
if ( lines )
{
+ for ( unsigned int n = 0; n < height; n++ )
+ free( lines[n] );
+
free( lines );
}