stop image animation on destroy. improve test.

lib/widgets/ansiimage.js

@@ -47,6 +47,10 @@ function ANSIImage(options) {
     // prevent image from blending with itself if there are alpha channels
     self.screen.clearRegion(lpos.xi, lpos.xl, lpos.yi, lpos.yl);
   });
+
+  this.on('destroy', function() {
+    self.stop();
+  });
 }
 
 ANSIImage.prototype.__proto__ = Box.prototype;
@@ -119,26 +123,27 @@ ANSIImage.prototype.setImage = function(file) {
   }
 };
 
-ANSIImage.prototype.play = function(callback) {
+ANSIImage.prototype.play = function() {
   var self = this;
-  return this.img.play(callback || function(bmp, cellmap) {
+  if (!this.img) return;
+  return this.img.play(function(bmp, cellmap) {
     self.cellmap = cellmap;
     self.screen.render();
   });
 };
 
 ANSIImage.prototype.pause = function() {
+  if (!this.img) return;
   return this.img.pause();
 };
 
 ANSIImage.prototype.stop = function() {
+  if (!this.img) return;
   return this.img.stop();
 };
 
 ANSIImage.prototype.clearImage = function() {
-  if (this.img) {
-    this.stop();
-  }
+  this.stop();
   this.setContent('');
   this.img = null;
   this.cellmap = null;
@@ -148,7 +153,7 @@ ANSIImage.prototype.render = function() {
   var coords = this._render();
   if (!coords) return;
 
-  if (this.img) {
+  if (this.img && this.cellmap) {
     this.img.renderElement(this.cellmap, this);
   }
 

test/widget-png.js

@@ -94,14 +94,41 @@ var png = blessed.image({
 screen.render();
 
 screen.key('q', function() {
+  clearInterval(timeout);
   screen.destroy();
 });
 
 var timeout = setInterval(function() {
+  if (png.right <= 0) {
+    clearInterval(timeout);
+    return;
+  }
   png.left++;
   screen.render();
 }, 100);
 
+if (timeout.unref) timeout.unref();
+
+screen.key(['h', 'left'], function() {
+  png.left -= 2;
+});
+
+screen.key(['k', 'up'], function() {
+  png.top -= 2;
+});
+
+screen.key(['l', 'right'], function() {
+  png.left += 2;
+});
+
+screen.key(['j', 'down'], function() {
+  png.top += 2;
+});
+
+screen.on('keypress', function() {
+  clearInterval(timeout);
+});
+
 png.on('mousedown', function() {
   clearInterval(timeout);
 });