[Plplot-cvs] SF.net SVN: plplot:[10188] trunk/drivers

[<ai...@us...>]

Revision: 10188
          http://plplot.svn.sourceforge.net/plplot/?rev=10188&view=rev
Author:   airwin
Date:     2009-07-29 17:47:44 +0000 (Wed, 29 Jul 2009)

Log Message:
-----------
Enable alpha channel/transparency for background.

Modified Paths:
--------------
    trunk/drivers/cairo.c
    trunk/drivers/svg.c

Modified: trunk/drivers/cairo.c
===================================================================
--- trunk/drivers/cairo.c	2009-07-28 21:02:56 UTC (rev 10187)
+++ trunk/drivers/cairo.c	2009-07-29 17:47:44 UTC (rev 10188)
@@ -328,10 +328,11 @@
 
   /* Fill in the window with the background color. */
   cairo_rectangle(aStream->cairoContext, 0.0, 0.0, pls->xlength, pls->ylength);
-  cairo_set_source_rgb(aStream->cairoContext,
+  cairo_set_source_rgba(aStream->cairoContext,
 		       (double)pls->cmap0[0].r/255.0,
 		       (double)pls->cmap0[0].g/255.0,
-		       (double)pls->cmap0[0].b/255.0);
+		       (double)pls->cmap0[0].b/255.0,
+		       (double)pls->cmap0[0].a);
   cairo_fill(aStream->cairoContext);
 }
 
@@ -1219,10 +1220,11 @@
 
   /* Fill in the window with the background color. */
   cairo_rectangle(aStream->cairoContext, 0.0, 0.0, pls->xlength, pls->ylength);
-  cairo_set_source_rgb(aStream->cairoContext,
+  cairo_set_source_rgba(aStream->cairoContext,
 		       (double)pls->cmap0[0].r/255.0,
 		       (double)pls->cmap0[0].g/255.0,
-		       (double)pls->cmap0[0].b/255.0);
+		       (double)pls->cmap0[0].b/255.0,
+		       (double)pls->cmap0[0].a);
   cairo_fill(aStream->cairoContext);
 }
 

Modified: trunk/drivers/svg.c
===================================================================
--- trunk/drivers/svg.c	2009-07-28 21:02:56 UTC (rev 10187)
+++ trunk/drivers/svg.c	2009-07-29 17:47:44 UTC (rev 10188)
@@ -931,6 +931,8 @@
   write_hex(aStream->svgFile, pls->cmap0[0].g);
   write_hex(aStream->svgFile, pls->cmap0[0].b);
   fprintf(aStream->svgFile, "\"\n");
+  svg_indent(aStream);
+  fprintf(aStream->svgFile, "fill-opacity=\"%f\"\n", pls->cmap0[0].a);
 }
 
 /*---------------------------------------------------------------------


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