Reset transIndex changes to fix tests (debug images were broken)

twolfson · Oct 24, 2016 · ddccb95 · ddccb95
1 parent 3a6c388
commit ddccb95
Showing 1 changed file with 4 additions and 6 deletions.
diff --git a/lib/GIFEncoder.js b/lib/GIFEncoder.js
@@ -86,7 +86,7 @@ function GIFEncoder(width, height, options) {
   this.transparent = null;
 
   // transparent index in color table
-  this.transIndex = null;
+  this.transIndex = 0;
 
   // -1 = no repeat, 0 = forever. anything else is repeat count
   this.repeat = -1;
@@ -277,15 +277,15 @@ GIFEncoder.prototype.analyzePixels = function() {
   this.colorDepth = 8;
   this.palSize = 7;
 
-    // get closest match to transparent color if specified
+  // find index for transparent color
   if (this.transparent !== null) {
     this.transIndex = imgq.lookupRGB(
       (this.transparent & 0xFF0000) >> 16,
       (this.transparent & 0x00FF00) >> 8,
       (this.transparent & 0x0000FF)
     );
   } else {
-    this.transIndex = null;
+    this.transIndex = 0;
   }
 };
 
@@ -348,9 +348,7 @@ GIFEncoder.prototype.writeGraphicCtrlExt = function() {
   );
 
   this.writeShort(this.delay); // delay x 1/100 sec
-  if (this.transIndex !== null) {
-    this.writeByte(this.transIndex); // transparent color index
-  }
+  this.writeByte(this.transIndex); // transparent color index
   this.writeByte(0); // block terminator
 };