Shrink handwriting when not focused [wip]

src/app.rs

@@ -1,5 +1,6 @@
 use std::{
     fs,
+    io::Read,
     path::PathBuf,
     sync::{Arc, mpsc},
     thread::JoinHandle,
@@ -7,12 +8,11 @@ use std::{
 };
 
 use crate::{
-    command_palette::{self, CommandPalette},
     file_editor::{FileEditor, SaveStatus},
     folder::Folder,
     preferences::Preferences,
     text_styles::{H1, H1_MONO, H2, H2_MONO, H3, H3_MONO, H4, H4_MONO, H5, H5_MONO, H6, H6_MONO},
-    util::{GuiSender, log_error},
+    util::{GuiSender, file_mtime, log_error},
 };
 use egui::{
     Align, Button, Context, FontData, FontDefinitions, FontFamily, FontId, Frame, Image, Key,
@@ -40,9 +40,6 @@ pub struct App {
     open_tab_index: Option<usize>,
 
     next_tab_id: TabId,
-
-    #[serde(skip)]
-    command_palette: Option<CommandPalette>,
 }
 
 pub struct Jobs {
@@ -132,7 +129,6 @@ impl Default for App {
             next_tab_id: 2,
             show_folders: false,
             folders: vec![],
-            command_palette: None,
         }
     }
 }
@@ -296,10 +292,6 @@ impl eframe::App for App {
             if input.consume_key(Modifiers::CTRL, Key::S) {
                 self.save_active_tab(ctx);
             }
-
-            if input.consume_key(Modifiers::CTRL, Key::K) {
-                self.command_palette = Some(Default::default());
-            }
         });
 
         egui::TopBottomPanel::top("top_panel").show(ctx, |ui| {
@@ -318,10 +310,19 @@ impl eframe::App for App {
                         self.jobs.start(ui.ctx(), move || {
                             let file_path = rfd::FileDialog::new().pick_file()?;
 
-                            log_error(eyre!("Failed to open file {file_path:?}"), || {
-                                FileEditor::open_file(file_path)
-                            })
-                            .map(Action::OpenFile)
+                            let mut file = fs::File::open(&file_path)
+                                .inspect_err(|e| log::error!("Failed to open {file_path:?}: {e}"))
+                                .ok()?;
+
+                            let mtime = log_error(eyre!("file_path:?"), || file_mtime(&file))?;
+
+                            let mut text = String::new();
+                            file.read_to_string(&mut text)
+                                .inspect_err(|e| log::error!("Failed to read {file_path:?}: {e}"))
+                                .ok()?;
+
+                            let editor = FileEditor::from_file(file_path, &text, mtime);
+                            Some(Action::OpenFile(editor))
                         });
                     }
 
@@ -444,10 +445,23 @@ impl eframe::App for App {
                         if let Some(file_path) = response.open_file {
                             let file_path = file_path.to_owned();
                             self.jobs.start(ui.ctx(), move || {
-                                log_error(eyre!("Failed to open file {file_path:?}"), || {
-                                    FileEditor::open_file(file_path)
-                                })
-                                .map(Action::OpenFile)
+                                let mut file = fs::File::open(&file_path)
+                                    .inspect_err(|e| {
+                                        log::error!("Failed to open {file_path:?}: {e}")
+                                    })
+                                    .ok()?;
+
+                                let mtime = log_error(eyre!("file_path:?"), || file_mtime(&file))?;
+
+                                let mut text = String::new();
+                                file.read_to_string(&mut text)
+                                    .inspect_err(|e| {
+                                        log::error!("Failed to read {file_path:?}: {e}")
+                                    })
+                                    .ok()?;
+
+                                let editor = FileEditor::from_file(file_path, &text, mtime);
+                                Some(Action::OpenFile(editor))
                             });
                         }
 
@@ -475,16 +489,6 @@ impl eframe::App for App {
                     egui::warn_if_debug_build(ui);
                 });
             });
-
-        if let Some(command_palette) = &mut self.command_palette {
-            match command_palette.show(ctx, &mut self.jobs, &mut self.folders) {
-                command_palette::Response::None => {}
-                command_palette::Response::Close => {
-                    self.command_palette = None;
-                    ctx.request_repaint();
-                }
-            };
-        }
     }
 }
 

src/command_palette.rs

@@ -1,146 +0,0 @@
-use std::{
-    cmp::min,
-    path::{Path, PathBuf},
-};
-
-use egui::{Key, Modifiers, RichText, Ui, Window};
-use eyre::eyre;
-
-use crate::{
-    app::{Action, Jobs},
-    file_editor::FileEditor,
-    folder::Folder,
-    util::log_error,
-};
-
-pub struct CommandPalette {
-    first_frame: bool,
-    input: String,
-    results: Vec<OpenFileCommand>,
-    list_i: usize,
-}
-
-impl Default for CommandPalette {
-    fn default() -> Self {
-        Self {
-            first_frame: true,
-            input: Default::default(),
-            results: Default::default(),
-            list_i: 0,
-        }
-    }
-}
-
-struct OpenFileCommand {
-    pretty: String,
-    path: PathBuf,
-}
-
-pub enum Response {
-    None,
-    Close,
-}
-
-impl CommandPalette {
-    pub fn show(
-        &mut self,
-        ctx: &egui::Context,
-        jobs: &mut Jobs,
-        folders: &mut [Folder],
-    ) -> Response {
-        Window::new("Command Palette")
-            .collapsible(false)
-            .show(ctx, |ui| {
-                let text_edit = ui.text_edit_singleline(&mut self.input);
-                let mut response = Response::None;
-                if self.first_frame {
-                    self.first_frame = false;
-                    text_edit.request_focus();
-                }
-
-                if text_edit.has_focus() || text_edit.lost_focus() {
-                    ui.input_mut(|input| {
-                        if input.consume_key(Modifiers::NONE, Key::ArrowUp) {
-                            self.list_i = self.list_i.saturating_sub(1);
-                        };
-                        if input.consume_key(Modifiers::NONE, Key::ArrowDown) {
-                            self.list_i =
-                                min(self.list_i + 1, self.results.len().saturating_sub(1));
-                        };
-                        if input.consume_key(Modifiers::NONE, Key::Enter)
-                            && let Some(result) = self.results.get(self.list_i)
-                        {
-                            let path = result.path.clone();
-                            log::info!("open {}", result.pretty);
-                            jobs.start(ui.ctx(), move || {
-                                log_error(eyre!("Failed to open file {path:?}"), move || {
-                                    FileEditor::open_file(path)
-                                })
-                                .map(Action::OpenFile)
-                            });
-                        };
-                    });
-                }
-
-                if !text_edit.has_focus() {
-                    log::info!("sad face");
-                    response = Response::Close;
-                }
-
-                if text_edit.changed() {
-                    self.results.clear();
-
-                    if !self.input.is_empty() {
-                        self.input = self.input.to_lowercase();
-                        search_files(ui, &self.input, "".as_ref(), folders, &mut self.results);
-                    }
-
-                    self.list_i = min(self.list_i, self.results.len().saturating_sub(1));
-                }
-
-                for (i, result) in self.results.iter().enumerate() {
-                    let highlight = i == self.list_i;
-                    ui.horizontal(|ui| {
-                        let mut label = RichText::new("> open");
-                        if highlight {
-                            label = label.strong().underline();
-                        }
-                        ui.label(label);
-                        ui.monospace(&result.pretty);
-                    });
-                }
-
-                response
-            })
-            .expect("Window is always open")
-            .inner
-            .expect("Windows is never collapsed")
-    }
-}
-
-/// Search the tree of [Folder]s for files matching `query`.
-fn search_files(
-    ui: &mut Ui,
-    query: &str,
-    path: &Path,
-    folders: &mut [Folder],
-    out: &mut Vec<OpenFileCommand>,
-) {
-    for folder in folders {
-        let Some(folder) = folder.load(ui) else {
-            continue;
-        };
-
-        let path = path.join(&folder.name);
-
-        for file in &folder.child_files {
-            if file.name.to_lowercase().contains(query) {
-                let pretty = path.join(&file.name).to_string_lossy().to_string();
-                let path = file.path.clone();
-                out.push(OpenFileCommand { pretty, path });
-            }
-        }
-
-        search_files(ui, query, &path, &mut folder.child_folders, out);
-    }
-}

src/file_editor.rs

@@ -2,7 +2,7 @@ use std::{
     cmp::Ordering,
     fmt::{self, Display},
     fs::{self, File},
-    io::{Read as _, Write},
+    io::Write,
     ops::{Div as _, Sub as _},
     path::{Path, PathBuf},
     str::FromStr,
@@ -13,7 +13,7 @@ use chrono::{DateTime, Local};
 use egui::{
     Align, Button, Context, DragAndDrop, Frame, Layout, ScrollArea, Ui, UiBuilder, Vec2, vec2,
 };
-use eyre::{Context as _, eyre};
+use eyre::eyre;
 use notify::{EventKind, Watcher};
 
 use crate::{
@@ -100,7 +100,7 @@ impl FileEditor {
         }
     }
 
-    pub fn from_path(file_path: PathBuf, contents: &str, mtime: DateTime<Local>) -> Self {
+    pub fn from_file(file_path: PathBuf, contents: &str, mtime: DateTime<Local>) -> Self {
         let file_title = file_path
             .file_name()
             .map(|name| name.to_string_lossy().to_string())
@@ -115,19 +115,6 @@ impl FileEditor {
         }
     }
 
-    pub fn open_file(file_path: PathBuf) -> eyre::Result<Self> {
-        let mut file =
-            fs::File::open(&file_path).wrap_err_with(|| eyre!("Failed to open {file_path:?}"))?;
-
-        let mtime = file_mtime(&file)?;
-
-        let mut text = String::new();
-        file.read_to_string(&mut text)
-            .wrap_err_with(|| eyre!("Failed to read {file_path:?}"))?;
-
-        Ok(FileEditor::from_path(file_path, &text, mtime))
-    }
-
     pub fn title(&self) -> &str {
         &self.title
     }

src/folder.rs

@@ -158,7 +158,7 @@ impl LoadedFolder {
 }
 
 impl Folder {
-    pub fn load(&mut self, ui: &mut Ui) -> Option<&mut LoadedFolder> {
+    fn load(&mut self, ui: &mut Ui) -> Option<&mut LoadedFolder> {
         if let Folder::NotLoaded { name, path } = self {
             let (tx, rx) = mpsc::channel();
 

src/handwriting/mod.rs

@@ -27,7 +27,7 @@ use zerocopy::{FromBytes, IntoBytes};
 use crate::{custom_code_block::try_from_custom_code_block, rasterizer};
 use crate::{custom_code_block::write_custom_code_block, util::random_id};
 
-use self::tool::{Tool, ToolEvent};
+use self::tool::{ToolEvent, Tool};
 
 const HANDWRITING_MIN_HEIGHT: f32 = 100.0;
 const HANDWRITING_BOTTOM_PADDING: f32 = 80.0;
@@ -89,6 +89,9 @@ struct Ephemeral {
     /// Tool position last frame, in canvas space.
     last_tool_position: Option<Pos2>,
 
+    /// Whether the handwriting element is being interacted with.
+    is_focused: bool,
+
     /// The stroke that is currently being drawed.
     current_stroke: Vec<Pos2>,
 
@@ -139,9 +142,10 @@ impl Default for Ephemeral {
         Self {
             id: random_id(),
             canvas_rasterizer: Default::default(),
-            tool: Tool::Pencil,
+            tool: Tool::Eraser,
             tool_position: None,
             last_tool_position: None,
+            is_focused: false,
             current_stroke: Default::default(),
             tessellator: None,
             mesh: Default::default(),
@@ -238,9 +242,16 @@ impl Handwriting {
         // Was the user in the process of drawing a stroke last frame?
         let was_drawing = !self.e.current_stroke.is_empty();
 
-        // Is the user in the process of drawing a stroke now?
+        // Is the user in the process of drawing a stroke now?;
         let is_drawing = response.interact_pointer_pos().is_some();
 
+        if is_drawing {
+            self.e.is_focused = true;
+        } else if ui.ctx().input(|i| i.pointer.any_down()) {
+            // if the user starts interactive with something else, unfocus the handwriting area.
+            self.e.is_focused = false;
+        }
+
         if !is_drawing {
             if was_drawing {
                 // commit current line
@@ -248,12 +259,18 @@ impl Handwriting {
                 response.mark_changed();
             }
 
+            let padding = if self.e.is_focused {
+                HANDWRITING_BOTTOM_PADDING
+            } else {
+                0.0
+            };
+
             // recalculate how tall the widget should be
             let lines_max_y = self
                 .strokes
                 .iter()
                 .flatten()
-                .map(|p| p.y + HANDWRITING_BOTTOM_PADDING)
+                .map(|p| p.y + padding)
                 .fold(HANDWRITING_MIN_HEIGHT, |max, y| max.max(y));
 
             // Change the height of the handwriting item.
@@ -299,7 +316,9 @@ impl Handwriting {
                     self.e.tool_position = tool_event.position();
                     match self.e.tool {
                         Tool::Pencil => {
-                            hw_response.changed |= tool::pencil::on_tool_event(self, tool_event);
+                            hw_response.changed |=
+                            tool::pencil::on_tool_event(self, tool_event);
+                            
                         }
                         Tool::Eraser => {
                             if tool::eraser::on_tool_event(self, tool_event) {
@@ -365,9 +384,7 @@ impl Handwriting {
         // Draw the texture
         self.e.canvas_rasterizer.show(ui.ctx(), &painter, mesh_rect);
 
-        if let Some(tool_position) = self.e.tool_position
-            && let Tool::Eraser = self.e.tool
-        {
+        if let Some(tool_position) = self.e.tool_position && let Tool::Eraser = self.e.tool {
             let pos = to_screen * tool_position;
             let shape = Shape::circle_stroke(pos, tool::eraser::RADIUS, style.stroke);
             painter.add(shape);
@@ -780,8 +797,6 @@ mod test {
 
     use egui::{Event, Modifiers, PointerButton, Pos2, Rect, emath::RectTransform};
 
-    use crate::handwriting::tool::pencil;
-
     use super::{Handwriting, process_event};
 
     #[test]
@@ -980,7 +995,7 @@ mod test {
         let from_screen = from_screen();
         for event in TEST_EVENTS {
             process_event(&mut last_pos, from_screen, event, |tool_event| {
-                pencil::on_tool_event(&mut handwriting, tool_event);
+                handwriting.on_tool_event(tool_event);
             });
         }
         let serialized = handwriting.to_string();

src/lib.rs

@@ -1,5 +1,4 @@
 pub mod app;
-pub mod command_palette;
 pub mod constants;
 pub mod custom_code_block;
 pub mod file_editor;

src/markdown/parser.rs

@@ -1,4 +1,4 @@
-use std::iter;
+use std::iter::{self, once};
 
 use crate::markdown::Style;
 
@@ -142,8 +142,18 @@ fn collect_until<'a, const N: usize>(
     first_token: Option<&Token<'a>>,
     tokens: &mut &[Token<'a>],
     pattern: impl FnMut(&[Token<'a>; N]) -> bool,
-) -> Span<'a> {
-    let split_at = match tokens.array_windows::<N>().position(pattern) {
+) -> Span<'a>
+where
+    // &[T; N]: TryFrom<&[T]>
+    for<'b> &'b [Token<'a>; N]: TryFrom<&'b [Token<'a>]>,
+{
+    let mut windows = tokens.windows(N).map(|slice| {
+        <&[Token<'a>; N]>::try_from(slice)
+            .ok()
+            .expect("`windows` promises to return slices of length N")
+    });
+
+    let split_at = match windows.position(pattern) {
         Some(i) => i + N,
         None => tokens.len(), // consume everything
     };
@@ -151,8 +161,8 @@ fn collect_until<'a, const N: usize>(
     let (consume, keep) = tokens.split_at(split_at);
     *tokens = keep;
 
-    first_token
-        .into_iter()
+    once(first_token)
+        .flatten()
         .chain(consume)
         .fold(Span::empty(), |span: Span<'_>, token| {
             span.try_merge(&token.span).unwrap()