Document settings submenu: add Save as default (#9643)

frontend/apps/reader/modules/readermenu.lua

@@ -178,7 +178,10 @@ function ReaderMenu:setUpdateItemTable()
     end
 
     -- typeset tab
-    self.menu_items.reset_document_settings = {
+    self.menu_items.document_settings = {
+        text = _("Document settings"),
+        sub_item_table = {
+            {
                 text = _("Reset document settings to default"),
                 keep_menu_open = true,
                 callback = function()
@@ -194,7 +197,27 @@ function ReaderMenu:setUpdateItemTable()
                         end,
                     })
                 end,
+            },
+            {
+                text = _("Save document settings as default"),
+                keep_menu_open = true,
+                callback = function()
+                    UIManager:show(ConfirmBox:new{
+                        text = _("Save current document settings as default values?"),
+                        ok_text = _("Save"),
+                        ok_callback = function()
+                            self:onTapCloseMenu()
+                            self:saveDocumentSettingsAsDefault()
+                            UIManager:show(require("ui/widget/notification"):new{
+                                text = _("Default settings updated"),
+                            })
+                        end,
+                    })
+                end,
+            },
+        },
     }
+
     self.menu_items.page_overlap = require("ui/elements/page_overlap")
 
     -- settings tab
@@ -305,6 +328,21 @@ dbg:guard(ReaderMenu, 'setUpdateItemTable',
         end
     end)
 
+function ReaderMenu:saveDocumentSettingsAsDefault()
+    local prefix
+    if self.ui.rolling then
+        G_reader_settings:saveSetting("cre_font", self.ui.font.font_face)
+        G_reader_settings:saveSetting("copt_css", self.ui.document.default_css)
+        G_reader_settings:saveSetting("style_tweaks", self.ui.styletweak.global_tweaks)
+        prefix = "copt_"
+    else
+        prefix = "kopt_"
+    end
+    for k, v in pairs(self.ui.document.configurable) do
+        G_reader_settings:saveSetting(prefix .. k, v)
+    end
+end
+
 function ReaderMenu:exitOrRestart(callback, force)
     if self.menu_container then self:onTapCloseMenu() end
 

frontend/ui/elements/reader_menu_order.lua

@@ -41,7 +41,7 @@ local order = {
         "bookmarks_settings",
     },
     typeset = {
-        "reset_document_settings",
+        "document_settings",
         "----------------------------",
         "set_render_style",
         "style_tweaks",