Use original URL instead of thumbnail URL for GIFs

- GIFs tend to be small enough to download directly
- Sometimes, thumbnails don't support animating

Change-Id: I9848d05f2f1565570f341847209712b9e4abfbac

vector/src/main/java/im/vector/app/features/home/room/detail/timeline/item/MessageImageVideoItem.kt

@@ -77,7 +77,9 @@ abstract class MessageImageVideoItem : AbsMessageItem<MessageImageVideoItem.Hold
             }
         }
         val animate = mediaData.mimeType == MimeTypes.Gif
-        imageContentRenderer.render(mediaData, mode, holder.imageView, onImageSizeListener, animate)
+        // Do not use thumbnails for animated GIFs - sometimes thumbnails do not animate while the original GIF does
+        val effectiveMode = if (animate && mode == ImageContentRenderer.Mode.THUMBNAIL) ImageContentRenderer.Mode.ANIMATED_THUMBNAIL else mode
+        imageContentRenderer.render(mediaData, effectiveMode, holder.imageView, onImageSizeListener, animate)
         if (!attributes.informationData.sendState.hasFailed()) {
             contentUploadStateTrackerBinder.bind(
                     attributes.informationData.eventId,

vector/src/main/java/im/vector/app/features/media/ImageContentRenderer.kt

@@ -82,6 +82,9 @@ class ImageContentRenderer @Inject constructor(private val localFilesHelper: Loc
     enum class Mode {
         FULL_SIZE,
         THUMBNAIL,
+        // Animated thumbnail: scale like a thumbnail, but use full_size resource,
+        // since the thumbnail resource might not support animating.
+        ANIMATED_THUMBNAIL,
         STICKER
     }
 
@@ -274,6 +277,7 @@ class ImageContentRenderer @Inject constructor(private val localFilesHelper: Loc
             val contentUrlResolver = activeSessionHolder.getActiveSession().contentUrlResolver()
             val resolvedUrl = when (mode) {
                 Mode.FULL_SIZE,
+                Mode.ANIMATED_THUMBNAIL,
                 Mode.STICKER -> resolveUrl(data)
                 Mode.THUMBNAIL -> contentUrlResolver.resolveThumbnail(data.url, size.width, size.height, ContentUrlResolver.ThumbnailMethod.SCALE)
             }
@@ -348,6 +352,7 @@ class ImageContentRenderer @Inject constructor(private val localFilesHelper: Loc
                     finalHeight = height
                     finalWidth = width
                 }
+                Mode.ANIMATED_THUMBNAIL,
                 Mode.THUMBNAIL -> {
                     finalHeight = min(maxImageWidth * height / width, maxImageHeight)
                     finalWidth = finalHeight * width / height