Added option to disable image thumbnails

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

@@ -249,6 +249,7 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
     private boolean preview_italic;
     private int preview_lines;
     private boolean attachments_alt;
+    private boolean thumbnails;
     private boolean contrast;
     private boolean monospaced;
     private boolean inline;
@@ -2353,6 +2354,7 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
             });
 
             List<EntityAttachment> images = new ArrayList<>();
+            if (thumbnails)
                 for (EntityAttachment attachment : attachments)
                     if (attachment.isAttachment() && attachment.isImage())
                         images.add(attachment);
@@ -4997,6 +4999,7 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
         this.preview_italic = prefs.getBoolean("preview_italic", true);
         this.preview_lines = prefs.getInt("preview_lines", 2);
         this.attachments_alt = prefs.getBoolean("attachments_alt", false);
+        this.thumbnails = prefs.getBoolean("thumbnails", true);
         this.contrast = prefs.getBoolean("contrast", false);
         this.monospaced = prefs.getBoolean("monospaced", false);
         this.inline = prefs.getBoolean("inline_images", false);

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

@@ -84,7 +84,7 @@ public class FragmentOptions extends FragmentBase {
             "name_email", "prefer_contact", "distinguish_contacts", "show_recipients", "authentication",
             "subject_top", "font_size_sender", "font_size_subject", "subject_italic", "highlight_subject", "subject_ellipsize",
             "keywords_header", "labels_header", "flags", "flags_background", "preview", "preview_italic", "preview_lines",
-            "addresses", "attachments_alt",
+            "addresses", "attachments_alt", "thumbnails",
             "contrast", "monospaced", "text_color", "text_size", "text_font", "text_align",
             "inline_images", "collapse_quotes", "seekbar", "actionbar", "actionbar_color", "navbar_colorize",
             "autoscroll", "swipenav", "autoexpand", "autoclose", "onclose",

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

@@ -113,6 +113,7 @@ public class FragmentOptionsDisplay extends FragmentBase implements SharedPrefer
     private SwitchCompat swCollapseQuotes;
     private SwitchCompat swImagesInline;
     private SwitchCompat swAttachmentsAlt;
+    private SwitchCompat swThumbnails;
 
     private SwitchCompat swParseClasses;
     private SwitchCompat swAuthentication;
@@ -128,7 +129,7 @@ public class FragmentOptionsDisplay extends FragmentBase implements SharedPrefer
             "preview", "preview_italic", "preview_lines",
             "addresses",
             "contrast", "monospaced", "text_color", "text_size", "text_font", "text_align",
-            "inline_images", "collapse_quotes", "attachments_alt",
+            "inline_images", "collapse_quotes", "attachments_alt", "thumbnails",
             "parse_classes", "authentication"
     };
 
@@ -198,6 +199,7 @@ public class FragmentOptionsDisplay extends FragmentBase implements SharedPrefer
         swCollapseQuotes = view.findViewById(R.id.swCollapseQuotes);
         swImagesInline = view.findViewById(R.id.swImagesInline);
         swAttachmentsAlt = view.findViewById(R.id.swAttachmentsAlt);
+        swThumbnails = view.findViewById(R.id.swThumbnails);
         swParseClasses = view.findViewById(R.id.swParseClasses);
         swAuthentication = view.findViewById(R.id.swAuthentication);
 
@@ -652,6 +654,13 @@ public class FragmentOptionsDisplay extends FragmentBase implements SharedPrefer
             }
         });
 
+        swThumbnails.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
+            @Override
+            public void onCheckedChanged(CompoundButton compoundButton, boolean checked) {
+                prefs.edit().putBoolean("thumbnails", checked).apply();
+            }
+        });
+
         swParseClasses.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
             @Override
             public void onCheckedChanged(CompoundButton compoundButton, boolean checked) {
@@ -812,6 +821,7 @@ public class FragmentOptionsDisplay extends FragmentBase implements SharedPrefer
         swCollapseQuotes.setChecked(prefs.getBoolean("collapse_quotes", false));
         swImagesInline.setChecked(prefs.getBoolean("inline_images", false));
         swAttachmentsAlt.setChecked(prefs.getBoolean("attachments_alt", false));
+        swThumbnails.setChecked(prefs.getBoolean("thumbnails", true));
 
         swParseClasses.setChecked(prefs.getBoolean("parse_classes", false));
         swAuthentication.setChecked(prefs.getBoolean("authentication", true));

app/src/main/res/layout/fragment_options_display.xml

@@ -902,6 +902,18 @@
             app:layout_constraintTop_toBottomOf="@id/tvImagesInlineHint"
             app:switchPadding="12dp" />
 
+        <androidx.appcompat.widget.SwitchCompat
+            android:id="@+id/swThumbnails"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="12dp"
+            android:enabled="true"
+            android:text="@string/title_advanced_thumbnails"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/swAttachmentsAlt"
+            app:switchPadding="12dp" />
+
         <eu.faircode.email.FixedTextView
             android:id="@+id/tvAdvanced"
             android:layout_width="0dp"
@@ -912,7 +924,7 @@
             android:textAppearance="@style/TextAppearance.AppCompat.Large"
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@id/swAttachmentsAlt" />
+            app:layout_constraintTop_toBottomOf="@id/swThumbnails" />
 
         <androidx.appcompat.widget.SwitchCompat
             android:id="@+id/swParseClasses"

app/src/main/res/values/strings.xml

@@ -355,6 +355,7 @@
     <string name="title_advanced_preview_lines">Number of preview lines</string>
     <string name="title_advanced_addresses">Expand address details by default</string>
     <string name="title_advanced_attachments_alt">Show attachments after the message text</string>
+    <string name="title_advanced_thumbnails">Show image thumbnails after the message text</string>
     <string name="title_advanced_contrast">Use high contrast for message text</string>
     <string name="title_advanced_monospaced">Use monospaced font for message text by default</string>
     <string name="title_advanced_text_color">Use text colors</string>