some wxArtProv docs

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

diff --git a/src/common/imagtiff.cpp b/src/common/imagtiff.cpp
index 088dd1497928f587d192945b98dee48fe7581dba..0c741c92c1725465379fbfc19bdeb9d7da841607 100644 (file)
--- a/src/common/imagtiff.cpp
+++ b/src/common/imagtiff.cpp
@@ -20,7 +20,7 @@
 
 #include "wx/defs.h"
 
-#if wxUSE_LIBTIFF
+#if wxUSE_IMAGE && wxUSE_LIBTIFF
 
 #include "wx/imagtiff.h"
 #include "wx/bitmap.h"
@@ -31,20 +31,34 @@ extern "C"
 {
     #include "tiff.h"
     #include "tiffio.h"
-    #include "tiffiop.h"
 }
 #include "wx/filefn.h"
 #include "wx/wfstream.h"
 #include "wx/intl.h"
 #include "wx/module.h"
 
+#ifndef TIFFLINKAGEMODE
+  #define TIFFLINKAGEMODE LINKAGEMODE
+#endif
+
 //-----------------------------------------------------------------------------
 // wxTIFFHandler
 //-----------------------------------------------------------------------------
 
 IMPLEMENT_DYNAMIC_CLASS(wxTIFFHandler,wxImageHandler)
 
-static tsize_t
+extern "C"
+{
+
+tsize_t TIFFLINKAGEMODE
+_tiffNullProc(thandle_t WXUNUSED(handle),
+          tdata_t WXUNUSED(buf),
+          tsize_t WXUNUSED(size))
+{
+    return (tsize_t) -1;
+}
+
+tsize_t TIFFLINKAGEMODE
 _tiffReadProc(thandle_t handle, tdata_t buf, tsize_t size)
 {
     wxInputStream *stream = (wxInputStream*) handle;
@@ -52,7 +66,7 @@ _tiffReadProc(thandle_t handle, tdata_t buf, tsize_t size)
     return stream->LastRead();
 }
 
-static tsize_t
+tsize_t TIFFLINKAGEMODE
 _tiffWriteProc(thandle_t handle, tdata_t buf, tsize_t size)
 {
     wxOutputStream *stream = (wxOutputStream*) handle;
@@ -60,8 +74,8 @@ _tiffWriteProc(thandle_t handle, tdata_t buf, tsize_t size)
     return stream->LastWrite();
 }
 
-static toff_t
-_tiffSeekProc(thandle_t handle, toff_t off, int whence)
+toff_t TIFFLINKAGEMODE
+_tiffSeekIProc(thandle_t handle, toff_t off, int whence)
 {
     wxInputStream *stream = (wxInputStream*) handle;
     wxSeekMode mode;
@@ -76,20 +90,36 @@ _tiffSeekProc(thandle_t handle, toff_t off, int whence)
     return (toff_t)stream->SeekI( (off_t)off, mode );
 }
 
-static int
+toff_t TIFFLINKAGEMODE
+_tiffSeekOProc(thandle_t handle, toff_t off, int whence)
+{
+    wxOutputStream *stream = (wxOutputStream*) handle;
+    wxSeekMode mode;
+    switch (whence)
+    {
+        case SEEK_SET: mode = wxFromStart; break;
+        case SEEK_CUR: mode = wxFromCurrent; break;
+        case SEEK_END: mode = wxFromEnd; break;
+        default:       mode = wxFromCurrent; break;
+    }
+
+    return (toff_t)stream->SeekO( (off_t)off, mode );
+}
+
+int TIFFLINKAGEMODE
 _tiffCloseProc(thandle_t WXUNUSED(handle))
 {
     return 0;  // ?
 }
 
-static toff_t
+toff_t TIFFLINKAGEMODE
 _tiffSizeProc(thandle_t handle)
 {
-    wxInputStream *stream = (wxInputStream*) handle;
+    wxStreamBase *stream = (wxStreamBase*) handle;
     return (toff_t) stream->GetSize();
 }
 
-static int
+int TIFFLINKAGEMODE
 _tiffMapProc(thandle_t WXUNUSED(handle),
              tdata_t* WXUNUSED(pbase),
              toff_t* WXUNUSED(psize))
@@ -97,31 +127,44 @@ _tiffMapProc(thandle_t WXUNUSED(handle),
     return 0;
 }
 
-static void
+void TIFFLINKAGEMODE
 _tiffUnmapProc(thandle_t WXUNUSED(handle),
                tdata_t WXUNUSED(base),
                toff_t WXUNUSED(size))
 {
 }
 
+} // extern "C"
+
 TIFF*
 TIFFwxOpen(wxInputStream &stream, const char* name, const char* mode)
 {
     TIFF* tif = TIFFClientOpen(name, mode,
         (thandle_t) &stream,
-        _tiffReadProc, _tiffWriteProc,
-        _tiffSeekProc, _tiffCloseProc, _tiffSizeProc,
+        _tiffReadProc, _tiffNullProc,
+        _tiffSeekIProc, _tiffCloseProc, _tiffSizeProc,
         _tiffMapProc, _tiffUnmapProc);
 
-    if (tif)
-        tif->tif_fd = (int) &stream;
-
     return tif;
 }
 
+TIFF*
+TIFFwxOpen(wxOutputStream &stream, const char* name, const char* mode)
+{
+    TIFF* tif = TIFFClientOpen(name, mode,
+        (thandle_t) &stream,
+        _tiffNullProc, _tiffWriteProc,
+        _tiffSeekOProc, _tiffCloseProc, _tiffSizeProc,
+        _tiffMapProc, _tiffUnmapProc);
+
+    return tif;
+}
 
 bool wxTIFFHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose, int index )
 {
+    if (index == -1)
+        index = 0;
+
     image->Destroy();
 
     TIFF *tif = TIFFwxOpen( stream, "image", "r" );
@@ -160,6 +203,8 @@ bool wxTIFFHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbos
         if (verbose)
             wxLogError( _("TIFF: Couldn't allocate memory.") );
 
+        TIFFClose( tif );
+
         return FALSE;
     }
 
@@ -170,6 +215,7 @@ bool wxTIFFHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbos
             wxLogError( _("TIFF: Couldn't allocate memory.") );
 
         _TIFFfree( raster );
+        TIFFClose( tif );
 
         return FALSE;
     }
@@ -181,6 +227,7 @@ bool wxTIFFHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbos
 
         _TIFFfree( raster );
         image->Destroy();
+        TIFFClose( tif );
 
         return FALSE;
     }
@@ -193,7 +240,7 @@ bool wxTIFFHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbos
 
     for (uint32 i = 0; i < h; i++)
     {
-        for (uint32 j = 0; j < h; j++)
+        for (uint32 j = 0; j < w; j++)
         {
             unsigned char alpha = (unsigned char)TIFFGetA(raster[pos]);
             if (alpha < 127)
@@ -246,9 +293,77 @@ int wxTIFFHandler::GetImageCount( wxInputStream& stream )
     return dircount;
 }
 
-bool wxTIFFHandler::SaveFile( wxImage *WXUNUSED(image), wxOutputStream& WXUNUSED(stream), bool WXUNUSED(verbose) )
+bool wxTIFFHandler::SaveFile( wxImage *image, wxOutputStream& stream, bool verbose )
 {
-    return FALSE;
+    TIFF *tif = TIFFwxOpen( stream, "image", "w" );
+
+    if (!tif)
+    {
+        if (verbose)
+            wxLogError( _("TIFF: Error saving image.") );
+
+        return FALSE;
+    }
+
+    TIFFSetField(tif, TIFFTAG_IMAGEWIDTH,  (uint32)image->GetWidth());
+    TIFFSetField(tif, TIFFTAG_IMAGELENGTH, (uint32)image->GetHeight());
+    TIFFSetField(tif, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT);
+    TIFFSetField(tif, TIFFTAG_SAMPLESPERPIXEL, 3);
+    TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, 8);
+    TIFFSetField(tif, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
+    TIFFSetField(tif, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_RGB);
+    TIFFSetField(tif, TIFFTAG_COMPRESSION, COMPRESSION_LZW);
+
+    tsize_t linebytes = (tsize_t)image->GetWidth() * 3;
+    unsigned char *buf;
+
+    if (TIFFScanlineSize(tif) > linebytes)
+    {
+        buf = (unsigned char *)_TIFFmalloc(TIFFScanlineSize(tif));
+        if (!buf)
+        {
+            if (verbose)
+                wxLogError( _("TIFF: Couldn't allocate memory.") );
+
+            TIFFClose( tif );
+
+            return FALSE;
+        }
+    }
+    else
+    {
+        buf = NULL;
+    }
+
+    TIFFSetField(tif, TIFFTAG_ROWSPERSTRIP,
+        TIFFDefaultStripSize(tif, (uint32) -1));
+
+    unsigned char *ptr = image->GetData();
+    for (int row = 0; row < image->GetHeight(); row++)
+    {
+        if (buf)
+            memcpy(buf, ptr, image->GetWidth());
+
+        if (TIFFWriteScanline(tif, buf ? buf : ptr, (uint32)row, 0) < 0)
+        {
+            if (verbose)
+                wxLogError( _("TIFF: Error writing image.") );
+
+            TIFFClose( tif );
+            if (buf)
+                _TIFFfree(buf);
+
+            return FALSE;
+        }
+        ptr += image->GetWidth()*3;
+    }
+
+    (void) TIFFClose(tif);
+
+    if (buf)
+    _TIFFfree(buf);
+
+    return TRUE;
 }
 
 bool wxTIFFHandler::DoCanRead( wxInputStream& stream )
@@ -267,7 +382,3 @@ bool wxTIFFHandler::DoCanRead( wxInputStream& stream )
    // wxUSE_LIBTIFF
 
 
-
-
-
-