Added print margin of 1 cm

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

@@ -78,6 +78,7 @@ public class FragmentDialogPrint extends FragmentDialogBase {
         CheckBox cbHeader = dview.findViewById(R.id.cbHeader);
         CheckBox cbImages = dview.findViewById(R.id.cbImages);
         CheckBox cbBlockQuotes = dview.findViewById(R.id.cbBlockQuotes);
+        CheckBox cbMargin = dview.findViewById(R.id.cbMargin);
         CheckBox cbNotAgain = dview.findViewById(R.id.cbNotAgain);
 
         cbHeader.setChecked(prefs.getBoolean("print_html_header", true));
@@ -104,6 +105,14 @@ public class FragmentDialogPrint extends FragmentDialogBase {
             }
         });
 
+        cbMargin.setChecked(prefs.getBoolean("print_html_margins", true));
+        cbMargin.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
+            @Override
+            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
+                prefs.edit().putBoolean("print_html_margins", isChecked).apply();
+            }
+        });
+
         cbNotAgain.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
             @Override
             public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
@@ -138,10 +147,12 @@ public class FragmentDialogPrint extends FragmentDialogBase {
         boolean print_html_header = prefs.getBoolean("print_html_header", true);
         boolean print_html_images = prefs.getBoolean("print_html_images", true);
         boolean print_html_block_quotes = prefs.getBoolean("print_html_block_quotes", true);
+        boolean print_html_margins = prefs.getBoolean("print_html_margins", true);
 
         args.putBoolean("print_html_header", print_html_header);
         args.putBoolean("print_html_images", print_html_images);
         args.putBoolean("print_html_block_quotes", print_html_block_quotes);
+        args.putBoolean("print_html_margins", print_html_margins);
 
         new SimpleTask<String[]>() {
             @Override
@@ -151,6 +162,7 @@ public class FragmentDialogPrint extends FragmentDialogBase {
                 boolean print_html_header = args.getBoolean("print_html_header");
                 boolean print_html_images = args.getBoolean("print_html_images");
                 boolean print_html_block_quotes = args.getBoolean("print_html_block_quotes");
+                boolean print_html_margins = args.getBoolean("print_html_margins");
                 CharSequence selected = args.getCharSequence("selected");
                 boolean draft = args.getBoolean("draft");
 
@@ -193,6 +205,13 @@ public class FragmentDialogPrint extends FragmentDialogBase {
                                         "padding-left: 0; padding-right: 0;"));
                     }
 
+                if (print_html_margins) {
+                    Element body = document.body();
+                    String style = body.attr("style");
+                    body.attr("style", HtmlHelper.mergeStyles(style,
+                            "margin: 1cm !important;")); // 0.4 inch
+                }
+
                 HtmlHelper.markText(document);
 
                 HtmlHelper.embedInlineImages(context, id, document, true);
@@ -350,7 +369,7 @@ public class FragmentDialogPrint extends FragmentDialogBase {
                 }
 
                 args.putLong("received", message.received);
-                return new String[]{message.subject, document.body().html()};
+                return new String[]{message.subject, document.html()};
             }
 
             @Override

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

@@ -77,6 +77,17 @@
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toBottomOf="@id/tvImagesRemark" />
 
+        <CheckBox
+            android:id="@+id/cbMargin"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="12dp"
+            android:checked="true"
+            android:text="@string/title_print_margins"
+            android:textAppearance="@style/TextAppearance.AppCompat.Medium"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/cbBlockQuotes" />
+
         <CheckBox
             android:id="@+id/cbNotAgain"
             android:layout_width="wrap_content"
@@ -85,6 +96,6 @@
             android:text="@string/title_no_ask_again"
             android:textAppearance="@style/TextAppearance.AppCompat.Small"
             app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toBottomOf="@id/cbBlockQuotes" />
+            app:layout_constraintTop_toBottomOf="@id/cbMargin" />
     </androidx.constraintlayout.widget.ConstraintLayout>
 </eu.faircode.email.ScrollViewEx>

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

@@ -1440,6 +1440,7 @@
     <string name="title_print_images">Print images</string>
     <string name="title_print_images_remark">Downloading images might take some time</string>
     <string name="title_print_block_quotes">Print block quotes lines</string>
+    <string name="title_print_margins">Add a margin</string>
     <string name="title_show_headers">Show headers</string>
     <string name="title_show_html">Show source</string>
     <string name="title_raw_save">Save raw message</string>