From 9d02e84906d7782d030e57b8d889f4ec50d431e8 Mon Sep 17 00:00:00 2001
From: William Joye <wjoye@cfa.harvard.edu>
Date: Wed, 6 Mar 2019 10:59:15 -0500
Subject: support animated gif

---
 ds9/library/movie.tcl | 40 ++++++++++++++++++++++++----------------
 1 file changed, 24 insertions(+), 16 deletions(-)

diff --git a/ds9/library/movie.tcl b/ds9/library/movie.tcl
index 054f87e..f8efcf6 100644
--- a/ds9/library/movie.tcl
+++ b/ds9/library/movie.tcl
@@ -148,6 +148,17 @@ proc MovieCreate {fn} {
 	DisplayMode
     }
 
+    # reduce colors if needed
+    switch $movie(type) {
+	gif {
+	    $current(colorbar) configure -colors 64
+	    update
+	    $current(frame) colormap [$current(colorbar) get colormap]
+	    update
+	}
+	default {}
+    }
+    
     set movie(fn) $fn
     switch $movie(action) {
 	frame {MovieFrame}
@@ -155,6 +166,17 @@ proc MovieCreate {fn} {
 	3d {Movie3d}
     }
 
+    # reset colors if needed
+    switch $movie(type) {
+	gif {
+	    $current(colorbar) configure -colors 2048
+	    update
+	    $current(frame) colormap [$current(colorbar) get colormap]
+	    update
+	}
+	default {}
+    }
+    
     if {[info exists modesav]} {
 	set current(display) $modesav
 	DisplayMode
@@ -337,26 +359,12 @@ proc MoviePhotoGIF {} {
     }
 
     if {$movie(first)} {
-	set ww [image width $ph]
-	set hh [image height $ph]
-	agif create $movie(fn) $ww $hh
-	switch -- $current(colorbar) {
-	    colorbar {
-		switch -- $colorbar(map) {
-		    grey -
-		    red -
-		    green -
-		    blue {agif colortable $colorbar(map)}
-		    default {agif colortable pseudo}
-		}
-	    }
-	    colorbarrgb {agif colortable rgb}
-	}
+	agif create $movie(fn) [image width $ph] [image height $ph]
 	set movie(first) 0
     }
     agif add $ph
-    
     image delete $ph
+
     return 0
 }
 
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