Show image attachment composer

app/src/main/java/eu/faircode/email/AdapterAttachment.java

@@ -22,6 +22,7 @@ package eu.faircode.email;
 import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
+import android.graphics.Bitmap;
 import android.net.Uri;
 import android.os.Bundle;
 import android.view.LayoutInflater;
@@ -63,6 +64,7 @@ public class AdapterAttachment extends RecyclerView.Adapter<AdapterAttachment.Vi
     private boolean readonly;
     private boolean debug;
     private int dp12;
+    private int dp36;
 
     private List<EntityAttachment> items = new ArrayList<>();
 
@@ -118,6 +120,18 @@ public class AdapterAttachment extends RecyclerView.Adapter<AdapterAttachment.Vi
 
             ibDelete.setVisibility(readonly ? View.GONE : View.VISIBLE);
 
+            if (!readonly && attachment.isImage()) {
+                if (attachment.available) {
+                    Bitmap bm = ImageHelper.decodeImage(
+                            attachment.getFile(context), attachment.getMimeType(), dp36);
+                    if (bm == null)
+                        ivType.setImageResource(R.drawable.twotone_broken_image_24);
+                    else
+                        ivType.setImageBitmap(bm);
+                } else
+                    ivType.setImageResource(R.drawable.twotone_hourglass_top_24);
+                ivDisposition.setVisibility(View.GONE);
+            } else {
                 int resid = 0;
                 String extension = Helper.guessExtension(attachment.getMimeType());
                 if (extension != null)
@@ -132,6 +146,7 @@ public class AdapterAttachment extends RecyclerView.Adapter<AdapterAttachment.Vi
                         Part.ATTACHMENT.equals(attachment.disposition) ||
                                 Part.INLINE.equals(attachment.disposition)
                                 ? View.VISIBLE : View.INVISIBLE);
+            }
 
             tvName.setText(attachment.name);
 
@@ -346,6 +361,7 @@ public class AdapterAttachment extends RecyclerView.Adapter<AdapterAttachment.Vi
         SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
         this.debug = prefs.getBoolean("debug", false);
         this.dp12 = Helper.dp2pixels(context, 12);
+        this.dp36 = Helper.dp2pixels(context, 36);
 
         setHasStableIds(true);