feat: add scramble flag for development text scrambling

This commit introduces a new scramble option to help reduce distractions
during development by scrambling text using rot13. When enabled via the
new `--scramble` flag, text displayed in various views is transformed,
making it easier to focus on layout and behavior without reading the
actual content.

App & Args Updates

  - Added a `scramble: bool` field to the main application state (in `app.rs`).

  - Extended argument parsing (in `args.rs`) to recognize the `--scramble` flag.

NoteOptions Enhancement

  - Introduced a new bit flag `scramble_text` in `NoteOptions` with
    corresponding setter/getter methods.

UI Adjustments

  - Propagated the scramble flag through note rendering functions across
    navigation, timeline, and note view modules.

  - Updated several UI components (e.g., in `nav.rs`, `route.rs`, and
    `contents.rs`) to accept and apply the new note options.

Rot13 Implementation

  - Implemented a helper function (`rot13`) to scramble text
    conditionally when the scramble option is enabled.

This feature is intended for development builds only, offering a way to
obscure text content during UI tweaks and testing.

Signed-off-by: William Casarin <jb55@jb55.com>

crates/notedeck_columns/src/app.rs

@@ -52,6 +52,9 @@ pub struct Damus {
     pub since_optimize: bool,
     pub textmode: bool,
 
+    /// Scramble text for development
+    pub scramble: bool,
+
     pub unrecognized_args: BTreeSet<String>,
 }
 
@@ -430,6 +433,7 @@ impl Damus {
             drafts: Drafts::default(),
             state: DamusState::Initializing,
             textmode: parsed_args.textmode,
+            scramble: parsed_args.scramble,
             //frame_history: FrameHistory::default(),
             view_state: ViewState::default(),
             tmp_columns,
@@ -474,6 +478,7 @@ impl Damus {
             drafts: Drafts::default(),
             state: DamusState::Initializing,
             textmode: false,
+            scramble: false,
             tmp_columns: true,
             //frame_history: FrameHistory::default(),
             view_state: ViewState::default(),

crates/notedeck_columns/src/args.rs

@@ -8,6 +8,7 @@ pub struct ColumnsArgs {
     pub columns: Vec<ArgColumn>,
     pub since_optimize: bool,
     pub textmode: bool,
+    pub scramble: bool,
 }
 
 impl ColumnsArgs {
@@ -17,6 +18,7 @@ impl ColumnsArgs {
             columns: vec![],
             since_optimize: true,
             textmode: false,
+            scramble: false,
         };
 
         let mut i = 0;
@@ -28,6 +30,8 @@ impl ColumnsArgs {
                 res.textmode = true;
             } else if arg == "--no-since-optimize" {
                 res.since_optimize = false;
+            } else if arg == "--scramble" {
+                res.scramble = true;
             } else if arg == "--filter" {
                 i += 1;
                 let filter = if let Some(next_arg) = args.get(i) {

crates/notedeck_columns/src/nav.rs

@@ -16,7 +16,7 @@ use crate::{
         column::NavTitle,
         configure_deck::ConfigureDeckView,
         edit_deck::{EditDeckResponse, EditDeckView},
-        note::{PostAction, PostType},
+        note::{NoteOptions, PostAction, PostType},
         profile::EditProfileView,
         support::SupportView,
         RelayView, View,
@@ -243,6 +243,13 @@ fn render_nav_body(
     col: usize,
     inner_rect: egui::Rect,
 ) -> Option<RenderNavAction> {
+    let note_options = {
+        let mut options = NoteOptions::default();
+        options.set_textmode(app.textmode);
+        options.set_scramble_text(app.scramble);
+        options
+    };
+
     match top {
         Route::Timeline(kind) => render_timeline_route(
             ctx.ndb,
@@ -253,7 +260,7 @@ fn render_nav_body(
             ctx.accounts,
             kind,
             col,
-            app.textmode,
+            note_options,
             depth,
             ui,
         ),
@@ -310,6 +317,7 @@ fn render_nav_body(
                         ctx.img_cache,
                         &note,
                         inner_rect,
+                        note_options,
                     )
                     .id_source(id)
                     .show(ui)
@@ -345,6 +353,7 @@ fn render_nav_body(
                     draft,
                     &note,
                     inner_rect,
+                    note_options,
                 )
                 .id_source(id)
                 .show(ui)
@@ -366,6 +375,7 @@ fn render_nav_body(
                 ctx.note_cache,
                 kp,
                 inner_rect,
+                note_options,
             )
             .ui(&txn, ui);
 

crates/notedeck_columns/src/timeline/route.rs

@@ -19,15 +19,13 @@ pub fn render_timeline_route(
     accounts: &mut Accounts,
     kind: &TimelineKind,
     col: usize,
-    textmode: bool,
+    mut note_options: NoteOptions,
     depth: usize,
     ui: &mut egui::Ui,
 ) -> Option<RenderNavAction> {
-    let note_options = {
-        let mut options = NoteOptions::new(kind == &TimelineKind::Universe);
-        options.set_textmode(textmode);
-        options
-    };
+    if kind == &TimelineKind::Universe {
+        note_options.set_hide_media(true);
+    }
 
     match kind {
         TimelineKind::List(_)
@@ -63,6 +61,7 @@ pub fn render_timeline_route(
                     col,
                     ui,
                     &accounts.mutefun(),
+                    note_options,
                 )
             } else {
                 // we render profiles like timelines if they are at the root
@@ -88,7 +87,7 @@ pub fn render_timeline_route(
             unknown_ids,
             img_cache,
             id.selected_or_root(),
-            textmode,
+            note_options,
             &accounts.mutefun(),
         )
         .id_source(egui::Id::new(("threadscroll", col)))
@@ -109,6 +108,7 @@ pub fn render_profile_route(
     col: usize,
     ui: &mut egui::Ui,
     is_muted: &MuteFun,
+    note_options: NoteOptions,
 ) -> Option<RenderNavAction> {
     let action = ProfileView::new(
         pubkey,
@@ -120,7 +120,7 @@ pub fn render_profile_route(
         img_cache,
         unknown_ids,
         is_muted,
-        NoteOptions::default(),
+        note_options,
     )
     .ui(ui);
 

crates/notedeck_columns/src/ui/note/contents.rs

@@ -67,6 +67,7 @@ impl egui::Widget for &mut NoteContents<'_> {
 
 /// Render an inline note preview with a border. These are used when
 /// notes are references within a note
+#[allow(clippy::too_many_arguments)]
 pub fn render_note_preview(
     ui: &mut egui::Ui,
     ndb: &Ndb,
@@ -75,6 +76,7 @@ pub fn render_note_preview(
     txn: &Transaction,
     id: &[u8; 32],
     parent: NoteKey,
+    note_options: NoteOptions,
 ) -> NoteResponse {
     #[cfg(feature = "profiling")]
     puffin::profile_function!();
@@ -112,7 +114,7 @@ pub fn render_note_preview(
             ui.visuals().noninteractive().bg_stroke.color,
         ))
         .show(ui, |ui| {
-            ui::NoteView::new(ndb, note_cache, img_cache, &note)
+            ui::NoteView::new(ndb, note_cache, img_cache, &note, note_options)
                 .actionbar(false)
                 .small_pfp(true)
                 .wide(true)
@@ -225,7 +227,11 @@ fn render_note_contents(
                 BlockType::Text => {
                     #[cfg(feature = "profiling")]
                     puffin::profile_scope!("text contents");
-                    ui.add(egui::Label::new(block.as_str()).selectable(selectable));
+                    if options.has_scramble_text() {
+                        ui.add(egui::Label::new(rot13(block.as_str())).selectable(selectable));
+                    } else {
+                        ui.add(egui::Label::new(block.as_str()).selectable(selectable));
+                    }
                 }
 
                 _ => {
@@ -236,7 +242,7 @@ fn render_note_contents(
     });
 
     let preview_note_action = if let Some((id, _block_str)) = inline_note {
-        render_note_preview(ui, ndb, note_cache, img_cache, txn, id, note_key).action
+        render_note_preview(ui, ndb, note_cache, img_cache, txn, id, note_key, options).action
     } else {
         None
     };
@@ -253,6 +259,24 @@ fn render_note_contents(
     NoteResponse::new(response.response).with_action(note_action)
 }
 
+fn rot13(input: &str) -> String {
+    input
+        .chars()
+        .map(|c| {
+            if c.is_ascii_lowercase() {
+                // Rotate lowercase letters
+                (((c as u8 - b'a' + 13) % 26) + b'a') as char
+            } else if c.is_ascii_uppercase() {
+                // Rotate uppercase letters
+                (((c as u8 - b'A' + 13) % 26) + b'A') as char
+            } else {
+                // Leave other characters unchanged
+                c
+            }
+        })
+        .collect()
+}
+
 fn image_carousel(
     ui: &mut egui::Ui,
     img_cache: &mut ImageCache,

crates/notedeck_columns/src/ui/note/mod.rs

@@ -76,8 +76,11 @@ impl<'a> NoteView<'a> {
         note_cache: &'a mut NoteCache,
         img_cache: &'a mut ImageCache,
         note: &'a nostrdb::Note<'a>,
+        mut flags: NoteOptions,
     ) -> Self {
-        let flags = NoteOptions::actionbar | NoteOptions::note_previews;
+        flags.set_actionbar(true);
+        flags.set_note_previews(true);
+
         let parent: Option<NoteKey> = None;
         Self {
             ndb,
@@ -89,11 +92,6 @@ impl<'a> NoteView<'a> {
         }
     }
 
-    pub fn note_options(mut self, options: NoteOptions) -> Self {
-        *self.options_mut() = options;
-        self
-    }
-
     pub fn textmode(mut self, enable: bool) -> Self {
         self.options_mut().set_textmode(enable);
         self
@@ -287,7 +285,14 @@ impl<'a> NoteView<'a> {
                             .text_style(style.text_style()),
                     );
                 });
-                NoteView::new(self.ndb, self.note_cache, self.img_cache, &note_to_repost).show(ui)
+                NoteView::new(
+                    self.ndb,
+                    self.note_cache,
+                    self.img_cache,
+                    &note_to_repost,
+                    self.flags,
+                )
+                .show(ui)
             } else {
                 self.show_standard(ui)
             }
@@ -393,6 +398,7 @@ impl<'a> NoteView<'a> {
                                         self.ndb,
                                         self.img_cache,
                                         self.note_cache,
+                                        self.flags,
                                     )
                                 })
                                 .inner;
@@ -464,6 +470,7 @@ impl<'a> NoteView<'a> {
                                 self.ndb,
                                 self.img_cache,
                                 self.note_cache,
+                                self.flags,
                             );
 
                             if action.is_some() {

crates/notedeck_columns/src/ui/note/options.rs

@@ -15,6 +15,9 @@ bitflags! {
         const textmode        = 0b0000000001000000;
         const options_button  = 0b0000000010000000;
         const hide_media      = 0b0000000100000000;
+
+        /// Scramble text so that its not distracting during development
+        const scramble_text   = 0b0000001000000000;
     }
 }
 
@@ -52,6 +55,7 @@ impl NoteOptions {
     create_bit_methods!(set_wide, has_wide, wide);
     create_bit_methods!(set_options_button, has_options_button, options_button);
     create_bit_methods!(set_hide_media, has_hide_media, hide_media);
+    create_bit_methods!(set_scramble_text, has_scramble_text, scramble_text);
 
     pub fn new(is_universe_timeline: bool) -> Self {
         let mut options = NoteOptions::default();

crates/notedeck_columns/src/ui/note/post.rs

@@ -4,7 +4,7 @@ use crate::media_upload::{nostrbuild_nip96_upload, MediaPath};
 use crate::post::{downcast_post_buffer, MentionType, NewPost};
 use crate::profile::get_display_name;
 use crate::ui::search_results::SearchResultsView;
-use crate::ui::{self, Preview, PreviewConfig};
+use crate::ui::{self, note::NoteOptions, Preview, PreviewConfig};
 use crate::Result;
 use egui::text::{CCursorRange, LayoutJob};
 use egui::text_edit::TextEditOutput;
@@ -27,6 +27,7 @@ pub struct PostView<'a> {
     poster: FilledKeypair<'a>,
     id_source: Option<egui::Id>,
     inner_rect: egui::Rect,
+    note_options: NoteOptions,
 }
 
 #[derive(Clone)]
@@ -82,6 +83,7 @@ pub struct PostResponse {
 }
 
 impl<'a> PostView<'a> {
+    #[allow(clippy::too_many_arguments)]
     pub fn new(
         ndb: &'a Ndb,
         draft: &'a mut Draft,
@@ -90,6 +92,7 @@ impl<'a> PostView<'a> {
         note_cache: &'a mut NoteCache,
         poster: FilledKeypair<'a>,
         inner_rect: egui::Rect,
+        note_options: NoteOptions,
     ) -> Self {
         let id_source: Option<egui::Id> = None;
         PostView {
@@ -101,6 +104,7 @@ impl<'a> PostView<'a> {
             id_source,
             post_type,
             inner_rect,
+            note_options,
         }
     }
 
@@ -302,6 +306,7 @@ impl<'a> PostView<'a> {
                                         txn,
                                         id.bytes(),
                                         nostrdb::NoteKey::new(0),
+                                        self.note_options,
                                     );
                                 });
                             });
@@ -686,6 +691,7 @@ mod preview {
                 app.note_cache,
                 self.poster.to_filled(),
                 ui.available_rect_before_wrap(),
+                NoteOptions::default(),
             )
             .ui(&txn, ui);
         }

crates/notedeck_columns/src/ui/note/quote_repost.rs

@@ -2,7 +2,10 @@ use enostr::{FilledKeypair, NoteId};
 use nostrdb::Ndb;
 use notedeck::{ImageCache, NoteCache};
 
-use crate::{draft::Draft, ui};
+use crate::{
+    draft::Draft,
+    ui::{self, note::NoteOptions},
+};
 
 use super::{PostResponse, PostType};
 
@@ -15,9 +18,11 @@ pub struct QuoteRepostView<'a> {
     quoting_note: &'a nostrdb::Note<'a>,
     id_source: Option<egui::Id>,
     inner_rect: egui::Rect,
+    note_options: NoteOptions,
 }
 
 impl<'a> QuoteRepostView<'a> {
+    #[allow(clippy::too_many_arguments)]
     pub fn new(
         ndb: &'a Ndb,
         poster: FilledKeypair<'a>,
@@ -26,6 +31,7 @@ impl<'a> QuoteRepostView<'a> {
         draft: &'a mut Draft,
         quoting_note: &'a nostrdb::Note<'a>,
         inner_rect: egui::Rect,
+        note_options: NoteOptions,
     ) -> Self {
         let id_source: Option<egui::Id> = None;
         QuoteRepostView {
@@ -37,6 +43,7 @@ impl<'a> QuoteRepostView<'a> {
             quoting_note,
             id_source,
             inner_rect,
+            note_options,
         }
     }
 
@@ -52,6 +59,7 @@ impl<'a> QuoteRepostView<'a> {
             self.note_cache,
             self.poster,
             self.inner_rect,
+            self.note_options,
         )
         .id_source(id)
         .ui(self.quoting_note.txn().unwrap(), ui)

crates/notedeck_columns/src/ui/note/reply.rs

@@ -1,6 +1,6 @@
 use crate::draft::Draft;
 use crate::ui;
-use crate::ui::note::{PostResponse, PostType};
+use crate::ui::note::{NoteOptions, PostResponse, PostType};
 use enostr::{FilledKeypair, NoteId};
 use nostrdb::Ndb;
 
@@ -15,9 +15,11 @@ pub struct PostReplyView<'a> {
     note: &'a nostrdb::Note<'a>,
     id_source: Option<egui::Id>,
     inner_rect: egui::Rect,
+    note_options: NoteOptions,
 }
 
 impl<'a> PostReplyView<'a> {
+    #[allow(clippy::too_many_arguments)]
     pub fn new(
         ndb: &'a Ndb,
         poster: FilledKeypair<'a>,
@@ -26,6 +28,7 @@ impl<'a> PostReplyView<'a> {
         img_cache: &'a mut ImageCache,
         note: &'a nostrdb::Note<'a>,
         inner_rect: egui::Rect,
+        note_options: NoteOptions,
     ) -> Self {
         let id_source: Option<egui::Id> = None;
         PostReplyView {
@@ -37,6 +40,7 @@ impl<'a> PostReplyView<'a> {
             img_cache,
             id_source,
             inner_rect,
+            note_options,
         }
     }
 
@@ -67,11 +71,17 @@ impl<'a> PostReplyView<'a> {
             egui::Frame::none()
                 .outer_margin(egui::Margin::same(note_offset))
                 .show(ui, |ui| {
-                    ui::NoteView::new(self.ndb, self.note_cache, self.img_cache, self.note)
-                        .actionbar(false)
-                        .medium_pfp(true)
-                        .options_button(true)
-                        .show(ui);
+                    ui::NoteView::new(
+                        self.ndb,
+                        self.note_cache,
+                        self.img_cache,
+                        self.note,
+                        self.note_options,
+                    )
+                    .actionbar(false)
+                    .medium_pfp(true)
+                    .options_button(true)
+                    .show(ui);
                 });
 
             let id = self.id();
@@ -87,6 +97,7 @@ impl<'a> PostReplyView<'a> {
                     self.note_cache,
                     self.poster,
                     self.inner_rect,
+                    self.note_options,
                 )
                 .id_source(id)
                 .ui(self.note.txn().unwrap(), ui)

crates/notedeck_columns/src/ui/note/reply_description.rs

@@ -1,4 +1,7 @@
-use crate::{actionbar::NoteAction, ui};
+use crate::{
+    actionbar::NoteAction,
+    ui::{self, note::NoteOptions},
+};
 use egui::{Label, RichText, Sense};
 use nostrdb::{Ndb, Note, NoteReply, Transaction};
 use notedeck::{ImageCache, NoteCache};
@@ -11,6 +14,7 @@ pub fn reply_desc(
     ndb: &Ndb,
     img_cache: &mut ImageCache,
     note_cache: &mut NoteCache,
+    note_options: NoteOptions,
 ) -> Option<NoteAction> {
     #[cfg(feature = "profiling")]
     puffin::profile_function!();
@@ -41,7 +45,7 @@ pub fn reply_desc(
         if r.hovered() {
             r.on_hover_ui_at_pointer(|ui| {
                 ui.set_max_width(400.0);
-                ui::NoteView::new(ndb, note_cache, img_cache, note)
+                ui::NoteView::new(ndb, note_cache, img_cache, note, note_options)
                     .actionbar(false)
                     .wide(true)
                     .show(ui);

crates/notedeck_columns/src/ui/thread.rs

@@ -17,7 +17,7 @@ pub struct ThreadView<'a> {
     unknown_ids: &'a mut UnknownIds,
     img_cache: &'a mut ImageCache,
     selected_note_id: &'a [u8; 32],
-    textmode: bool,
+    note_options: NoteOptions,
     id_source: egui::Id,
     is_muted: &'a MuteFun,
 }
@@ -31,7 +31,7 @@ impl<'a> ThreadView<'a> {
         unknown_ids: &'a mut UnknownIds,
         img_cache: &'a mut ImageCache,
         selected_note_id: &'a [u8; 32],
-        textmode: bool,
+        note_options: NoteOptions,
         is_muted: &'a MuteFun,
     ) -> Self {
         let id_source = egui::Id::new("threadscroll_threadview");
@@ -42,7 +42,7 @@ impl<'a> ThreadView<'a> {
             unknown_ids,
             img_cache,
             selected_note_id,
-            textmode,
+            note_options,
             id_source,
             is_muted,
         }
@@ -101,15 +101,10 @@ impl<'a> ThreadView<'a> {
                     error!("error polling notes into thread timeline: {err}");
                 }
 
-                // This is threadview. We are not the universe view...
-                let is_universe = false;
-                let mut note_options = NoteOptions::new(is_universe);
-                note_options.set_textmode(self.textmode);
-
                 TimelineTabView::new(
                     thread_timeline.current_view(),
                     true,
-                    note_options,
+                    self.note_options,
                     &txn,
                     self.ndb,
                     self.note_cache,

crates/notedeck_columns/src/ui/timeline.rs

@@ -388,10 +388,14 @@ impl<'a> TimelineTabView<'a> {
 
                 if !muted {
                     ui::padding(8.0, ui, |ui| {
-                        let resp =
-                            ui::NoteView::new(self.ndb, self.note_cache, self.img_cache, &note)
-                                .note_options(self.note_options)
-                                .show(ui);
+                        let resp = ui::NoteView::new(
+                            self.ndb,
+                            self.note_cache,
+                            self.img_cache,
+                            &note,
+                            self.note_options,
+                        )
+                        .show(ui);
 
                         if let Some(note_action) = resp.action {
                             action = Some(note_action)