(no commit message)

diff --git a/coders/txt.c b/coders/txt.c
index 3aa7eaa866921dec5ff4990ca2a8d3177001ad9e..7f762d28326b1eaae1fb08ad895603d832482928 100644 (file)
--- a/coders/txt.c
+++ b/coders/txt.c
@@ -648,7 +648,11 @@ static MagickBooleanType WriteTXTImage(const ImageInfo *image_info,Image *image,
     colorspace[MaxTextExtent],
     tuple[MaxTextExtent];
 
+  const char
+    *option;
+
   MagickBooleanType
+    sparse_color,
     status;
 
   MagickOffsetType
@@ -678,6 +682,8 @@ static MagickBooleanType WriteTXTImage(const ImageInfo *image_info,Image *image,
   status=OpenBlob(image_info,image,WriteBlobMode,exception);
   if (status == MagickFalse)
     return(status);
+  option=GetImageOption(image_info,"txt:sparse-color");
+  sparse_color=IsStringTrue(option);
   scene=0;
   do
   {
@@ -700,7 +706,7 @@ static MagickBooleanType WriteTXTImage(const ImageInfo *image_info,Image *image,
         break;
       for (x=0; x < (ssize_t) image->columns; x++)
       {
-        (void) FormatLocaleString(buffer,MaxTextExtent,"%.20g,%.20g: ",(double)
+        (void) FormatLocaleString(buffer,MaxTextExtent,"%.20g,%.20g ",(double)
           x,(double) y);
         (void) WriteBlobString(image,buffer);
         GetPixelInfoPixel(image,p,&pixel);
@@ -709,6 +715,21 @@ static MagickBooleanType WriteTXTImage(const ImageInfo *image_info,Image *image,
             pixel.green-=(QuantumRange+1)/2.0;
             pixel.blue-=(QuantumRange+1)/2.0;
           }
+        if ((sparse_color != MagickFalse) &&
+            (GetPixelAlpha(image,p) == (Quantum) OpaqueAlpha))
+          {
+            /*
+              Sparse-color format.
+            */
+            (void) QueryColorname(image,&pixel,SVGCompliance,tuple,exception);
+            (void) WriteBlobString(image," ");
+            (void) WriteBlobString(image,buffer);
+            (void) WriteBlobString(image,tuple);
+            (void) WriteBlobString(image," ");
+            p+=GetPixelChannels(image);
+            continue;
+          }
+        (void) WriteBlobString(image,": ");
         (void) CopyMagickString(tuple,"(",MaxTextExtent);
         if (pixel.colorspace == GRAYColorspace)
           ConcatenateColorComponent(&pixel,GrayPixelChannel,X11Compliance,