Changeset 1638 for trunk/gui

Timestamp:

Jan 11, 2010 11:14:45 PM (14 years ago)

Author:

gah

Message:

fix for empty JPEG image error

File:

• trunk/gui/scripts/nanovisviewer.tcl (modified) (1 diff)

trunk/gui/scripts/nanovisviewer.tcl

@@ -558 +558 @@
             # to the BLT picture image it won't be necessary to decode the
             # image data.
-            set bytes [$_image(plot) data -format "jpeg -quality 100"]
-            set bytes [Rappture::encoding::decode -as b64 $bytes]
-            return [list .jpg $bytes]
+            if { [image width $_image(plot)] > 0 && 
+                 [image height $_image(plot)] > 0 } {
+                set bytes [$_image(plot) data -format "jpeg -quality 100"]
+                set bytes [Rappture::encoding::decode -as b64 $bytes]
+                return [list .jpg $bytes]
+            }
+            return ""
         }
         default {