Improved override widths

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

@@ -2065,10 +2065,23 @@ public class HtmlHelper {
     }
 
     static void overrideWidth(Document document) {
-        document.select("head")
-                .prepend("<style type=\"text/css\">" +
-                        "* {width: auto !important; max-width: none !important;}" +
-                        "</style>");
+        List<String> tags = new ArrayList<>();
+        for (Element e : document.select("*")) {
+            String tag = e.tagName();
+            if ("img".equals(tag))
+                continue;
+            if (tags.contains(tag))
+                continue;
+            tags.add(tag);
+        }
+
+        StringBuilder sb = new StringBuilder();
+        sb.append("<style type=\"text/css\">");
+        for (String tag : tags)
+            sb.append(tag).append("{max-width: 100% !important;}");
+        sb.append("</style>");
+
+        document.select("head").append(sb.toString());
     }
 
     static String getLanguage(Context context, String subject, String text) {

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

@@ -1360,6 +1360,19 @@
                     app:layout_constraintTop_toBottomOf="@id/tvOverViewModeHint"
                     app:switchPadding="12dp" />
 
+                <eu.faircode.email.FixedTextView
+                    android:id="@+id/tvOverrideWidthHint"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_marginStart="12dp"
+                    android:layout_marginEnd="48dp"
+                    android:text="@string/title_advanced_override_width_hint"
+                    android:textAppearance="@style/TextAppearance.AppCompat.Small"
+                    android:textStyle="italic"
+                    app:layout_constraintEnd_toEndOf="parent"
+                    app:layout_constraintStart_toStartOf="parent"
+                    app:layout_constraintTop_toBottomOf="@id/swOverrideWidth" />
+
                 <androidx.appcompat.widget.SwitchCompat
                     android:id="@+id/swContrast"
                     android:layout_width="0dp"
@@ -1368,7 +1381,7 @@
                     android:text="@string/title_advanced_contrast"
                     app:layout_constraintEnd_toEndOf="parent"
                     app:layout_constraintStart_toStartOf="parent"
-                    app:layout_constraintTop_toBottomOf="@id/swOverrideWidth"
+                    app:layout_constraintTop_toBottomOf="@id/tvOverrideWidthHint"
                     app:switchPadding="12dp" />
 
                 <androidx.appcompat.widget.SwitchCompat

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

@@ -490,7 +490,7 @@
     <string name="title_advanced_thumbnails">Show image thumbnails after the message text</string>
     <string name="title_advanced_message_text_zoom2">Default message text zoom: %1$s %%</string>
     <string name="title_advanced_overview_mode">Zoom original messages to fit the screen</string>
-    <string name="title_advanced_override_width">Override widths in original messages</string>
+    <string name="title_advanced_override_width">Disable fixed widths in original messages</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_monospaced_pre">Use monospaced font for preformatted text</string>
@@ -751,6 +751,7 @@
     <string name="title_advanced_preview_lines_hint">Maximum %s characters in total</string>
     <string name="title_advanced_preview_issue">Scrolling can be slow due to a bug in some Android versions when the number of lines is more than one</string>
     <string name="title_advanced_overview_mode_hint">This can result in very small fonts</string>
+    <string name="title_advanced_override_width_hint">This can make messages smaller, but also look strange</string>
     <string name="title_advanced_placeholders_hint">This applies to reformatted messages only</string>
     <string name="title_advanced_inline_hint">Inline images are images included in the message</string>
     <string name="title_advanced_parse_classes_hint">This will more accurately display messages, but possibly with a delay</string>