Merge remote-tracking branch 'HaykoKoryun/issue-413'

lib/convenience.js

@@ -8,4 +8,5 @@ module.exports = function (proto) {
   require("./convenience/morph")(proto);
   require("./convenience/sepia")(proto);
   require("./convenience/autoOrient")(proto);
+  require("./convenience/avatar")(proto);
 }

lib/convenience/avatar.js

@@ -0,0 +1,43 @@
+var fs = require("fs");
+
+module.exports = function (proto) {
+
+  proto.avatar = function avatar (name, callback) {
+    var self = this;
+
+    self.size(function (err, size) {
+      if (err) {
+        return callback.apply(self, arguments);
+      }
+
+      self.original = self.source;
+      self.source = '';
+
+
+      self
+      .in("-size", size.width + "x" + size.height)
+      .in("xc:#ffffff00")
+      .drawCircle(size.width / 2, size.height / 2, size.width / 6, size.height / 6)
+      .write('mask.png', function(err)
+      {
+        if (err) {
+          return callback.apply(self, arguments);
+        }
+
+        self
+        .subCommand("composite")
+        .in('-compose', 'In', self.original, 'mask.png')
+        .write(name, function(err)
+        {
+          fs.unlink("mask.png");
+          if (err) {
+            return callback.apply(self, arguments);
+          }
+          callback.apply(self, arguments);
+        });
+      });
+    });
+
+    return self;
+  };
+};

test/avatar.js

@@ -0,0 +1,27 @@
+
+var assert = require('assert')
+
+module.exports = function (gm, dir, finish, GM) {
+
+  if (!GM.integration)
+    return finish();
+
+  gm
+  .avatar(__dirname + '/fixtures/avatar.png', function(err)
+  {
+    if(err)
+    {
+      finish(err);
+    }
+    else
+    {
+      gm.compare(__dirname + '/fixtures/avatar.png', __dirname + '/fixtures/avatar-compare.png',
+      function (err, isEqual)
+      {
+        if (err) return handle(err);
+        assert(isEqual);
+        finish();
+      })
+    }
+  });
+}