[Plplot-cvs] SF.net SVN: plplot:[10874] trunk/drivers/cairo.c

[<hez...@us...>]

Revision: 10874
          http://plplot.svn.sourceforge.net/plplot/?rev=10874&view=rev
Author:   hezekiahcarty
Date:     2010-03-18 20:23:49 +0000 (Thu, 18 Mar 2010)

Log Message:
-----------
Fix transparent backgrounds for the pngcairo device

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

Modified: trunk/drivers/cairo.c
===================================================================
--- trunk/drivers/cairo.c	2010-03-18 19:33:34 UTC (rev 10873)
+++ trunk/drivers/cairo.c	2010-03-18 20:23:49 UTC (rev 10874)
@@ -2288,7 +2288,7 @@
 
     /* Create a new cairo surface & context for PNG file. */
     /* Dimension units are pixels from cairo documentation. */
-    aStream->cairoSurface = cairo_image_surface_create( CAIRO_FORMAT_RGB24, (double) pls->xlength, (double) pls->ylength );
+    aStream->cairoSurface = cairo_image_surface_create( CAIRO_FORMAT_ARGB32, (double) pls->xlength, (double) pls->ylength );
     aStream->cairoContext = cairo_create( aStream->cairoSurface );
 
     /* Invert the surface so that the graphs are drawn right side up. */


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