1 files changed, 25 insertions, 6 deletions
diff --git a/src/main/java/de/pixart/messenger/persistance/FileBackend.java b/src/main/java/de/pixart/messenger/persistance/FileBackend.java
index 88e53efd4..c85c2c34a 100644
--- a/src/main/java/de/pixart/messenger/persistance/FileBackend.java
+++ b/src/main/java/de/pixart/messenger/persistance/FileBackend.java
@@ -9,6 +9,7 @@ import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.graphics.Canvas;
 import android.graphics.Matrix;
+import android.graphics.Paint;
 import android.graphics.RectF;
 import android.media.MediaMetadataRetriever;
 import android.net.Uri;
@@ -426,7 +427,8 @@ public class FileBackend {
                     return thumbnail;
                 }
                 DownloadableFile file = getFile(message);
-                if (file.getMimeType().startsWith("video/")) {
+                final String mime = file.getMimeType();
+                if (mime.startsWith("video/")) {
                     thumbnail = getVideoPreview(file, size);
                 } else {
                     Bitmap fullsize = getFullsizeImagePreview(file, size);
@@ -435,6 +437,12 @@ public class FileBackend {
                     }
                     thumbnail = resize(fullsize, size);
                     thumbnail = rotate(thumbnail, getRotation(file));
+                    if (mime.equals("image/gif")) {
+                        Bitmap withGifOverlay = thumbnail.copy(Bitmap.Config.ARGB_8888, true);
+                        drawOverlay(withGifOverlay, R.drawable.play_gif, 1.0f);
+                        thumbnail.recycle();
+                        thumbnail = withGifOverlay;
+                    }
                 }
                 this.mXmppConnectionService.getBitmapCache().put(uuid, thumbnail);
             }
@@ -453,6 +461,21 @@ public class FileBackend {
         }
     }
 
+    private void drawOverlay(Bitmap bitmap, int resource, float factor) {
+        Bitmap overlay = BitmapFactory.decodeResource(mXmppConnectionService.getResources(), resource);
+        Canvas canvas = new Canvas(bitmap);
+        Paint paint = new Paint();
+        paint.setAntiAlias(true);
+        paint.setFilterBitmap(true);
+        paint.setDither(true);
+        float targetSize = Math.min(canvas.getWidth(), canvas.getHeight()) * factor;
+        Log.d(Config.LOGTAG, "target size overlay: " + targetSize + " overlay bitmap size was " + overlay.getHeight());
+        float left = (canvas.getWidth() - targetSize) / 2.0f;
+        float top = (canvas.getHeight() - targetSize) / 2.0f;
+        RectF dst = new RectF(left, top, left + targetSize - 1, top + targetSize - 1);
+        canvas.drawBitmap(overlay, null, dst, paint);
+    }
+
     private Bitmap getVideoPreview(File file, int size) {
         MediaMetadataRetriever metadataRetriever = new MediaMetadataRetriever();
         Bitmap frame;
@@ -465,11 +488,7 @@ public class FileBackend {
             frame = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
             frame.eraseColor(0xff000000);
         }
-        Canvas canvas = new Canvas(frame);
-        Bitmap play = BitmapFactory.decodeResource(mXmppConnectionService.getResources(), R.drawable.play_video);
-        float x = (frame.getWidth() - play.getWidth()) / 2.0f;
-        float y = (frame.getHeight() - play.getHeight()) / 2.0f;
-        canvas.drawBitmap(play, x, y, null);
+        drawOverlay(frame,R.drawable.play_video,0.75f);
         return frame;
     }