gm engine: Map &progressive to .interlace('line')

papandreou · Mar 14, 2016 · 3aac4db · 3aac4db
1 parent 07da482
commit 3aac4db
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diff --git a/lib/getFilterInfosAndTargetContentTypeFromQueryString.js b/lib/getFilterInfosAndTargetContentTypeFromQueryString.js
@@ -209,6 +209,10 @@ module.exports = function getFilterInfosAndTargetContentTypeFromQueryString(quer
                                             }[String(gmOperation.args[0]).toLowerCase()] || 'Center'
                                         ];
                                     }
+                                    if (gmOperation.name === 'progressive') {
+                                        gmOperation.name = 'interlace';
+                                        gmOperation.args = [ 'line' ];
+                                    }
                                     if (!gmInstance[gmOperation.name]) {
                                         gmOperation = _.extend({}, gmOperation);
                                         gmOperation.args.unshift(gmOperation.name);

diff --git a/test/processImage.js b/test/processImage.js
@@ -611,6 +611,24 @@ describe('express-processimage', function () {
                     .and('to resemble', pathModule.resolve(__dirname, '..', 'testdata', 'rotatedBulb.gif'))
                 });
             });
+
+            it('should support generating a progressive (interlaced) GIF', function () {
+                config.debug = true;
+                return expect('GET /bulb.gif?rotate=90&progressive', 'to yield response', {
+                    headers: {
+                        'X-Express-Processimage': 'gm'
+                    },
+                    body: expect.it('to have metadata satisfying', {
+                        format: 'GIF',
+                        size: {
+                            width: 48,
+                            height: 48
+                        },
+                        Interlace: 'Line'
+                    })
+                    .and('to resemble', pathModule.resolve(__dirname, '..', 'testdata', 'rotatedBulb.gif'))
+                });
+            });
         });
 
         describe('with gifsicle available', function () {