🐛 Fix calculate size of some animated gifs

CHANGES.md

@@ -36,6 +36,7 @@
 
 - Disables buttons in view mode for users without permissions [Taiga #1328](https://tree.taiga.io/project/penpot/issue/1328)
 - Fix broken profile and profile options form.
+- Fix calculate size of some animated gifs [Taiga #1487](https://tree.taiga.io/project/penpot/issue/1487)
 - Fix error with the "Navigate to" button on prototypes [Taiga #1268](https://tree.taiga.io/project/penpot/issue/1268)
 - Fix issue when undo after changing the artboard of a shape [Taiga #1304](https://tree.taiga.io/project/penpot/issue/1304)
 - Fix issue with typographies panel cannot be collapsed [#707](https://github.com/penpot/penpot/issues/707)

backend/src/app/media.clj

@@ -157,8 +157,11 @@
                     :code :media-type-mismatch
                     :hint (str "Seems like you are uploading a file whose content does not match the extension."
                                "Expected: " mtype ". Got: " mtype')))
-        {:width  (.getImageWidth instance)
-         :height (.getImageHeight instance)
+        ;; For an animated GIF, getImageWidth/Height returns the delta size of one frame (if no frame given
+        ;; it returns size of the last one), whereas getPageWidth/Height always return the full size of
+        ;; any frame.
+        {:width  (.getPageWidth instance)
+         :height (.getPageHeight instance)
          :mtype  mtype}))))
 
 (defmethod process :default