From 64772544fad6788fd3fce5db3f357dba6f2d8d23 Mon Sep 17 00:00:00 2001 From: mo8it Date: Sun, 25 Aug 2024 20:29:54 +0200 Subject: [PATCH] Final touches :D --- src/app_state.rs | 3 +- src/list/state.rs | 95 ++++++++++++++++++++++++++++++----------------- 2 files changed, 63 insertions(+), 35 deletions(-) diff --git a/src/app_state.rs b/src/app_state.rs index b72469c..8fd8f3b 100644 --- a/src/app_state.rs +++ b/src/app_state.rs @@ -271,6 +271,7 @@ impl AppState { Ok(exercise.path) } + // Reset the exercise by index and return its name. pub fn reset_exercise_by_ind(&mut self, exercise_ind: usize) -> Result<&'static str> { if exercise_ind >= self.exercises.len() { bail!(BAD_INDEX_ERR); @@ -280,7 +281,7 @@ impl AppState { let exercise = &self.exercises[exercise_ind]; self.reset(exercise_ind, exercise.path)?; - Ok(exercise.path) + Ok(exercise.name) } // Return the index of the next pending exercise or `None` if all exercises are done. diff --git a/src/list/state.rs b/src/list/state.rs index b8fdfcb..25ca1de 100644 --- a/src/list/state.rs +++ b/src/list/state.rs @@ -12,7 +12,8 @@ use std::{ use crate::{app_state::AppState, exercise::Exercise, term::progress_bar, MAX_EXERCISE_NAME_LEN}; -// +1 for padding. +const MAX_SCROLL_PADDING: usize = 8; +// +1 for column padding. const SPACE: &[u8] = &[b' '; MAX_EXERCISE_NAME_LEN + 1]; fn next_ln(stdout: &mut StdoutLock) -> io::Result<()> { @@ -44,8 +45,9 @@ pub struct ListState<'a> { name_col_width: usize, filter: Filter, n_rows_with_filter: usize, - /// Selected row out of the displayed ones. + /// Selected row out of the filtered ones. selected_row: Option, + row_offset: usize, term_width: u16, term_height: u16, separator_line: Vec, @@ -53,7 +55,6 @@ pub struct ListState<'a> { show_footer: bool, max_n_rows_to_display: usize, scroll_padding: usize, - row_offset: usize, } impl<'a> ListState<'a> { @@ -70,7 +71,7 @@ impl<'a> ListState<'a> { let filter = Filter::None; let n_rows_with_filter = app_state.exercises().len(); - let selected = Some(app_state.current_exercise_ind()); + let selected = app_state.current_exercise_ind(); let mut slf = Self { message: String::with_capacity(128), @@ -78,7 +79,8 @@ impl<'a> ListState<'a> { name_col_width, filter, n_rows_with_filter, - selected_row: selected, + selected_row: Some(selected), + row_offset: selected.saturating_sub(MAX_SCROLL_PADDING), // Set by `set_term_size` term_width: 0, term_height: 0, @@ -87,8 +89,6 @@ impl<'a> ListState<'a> { show_footer: true, max_n_rows_to_display: 0, scroll_padding: 0, - // Updated by `draw` - row_offset: 0, }; let (width, height) = terminal::size()?; @@ -98,19 +98,6 @@ impl<'a> ListState<'a> { Ok(slf) } - pub fn set_term_size(&mut self, width: u16, height: u16) { - self.term_width = width; - self.term_height = height; - - self.separator_line = "─".as_bytes().repeat(width as usize); - - self.narrow_term = width < 95 && self.selected_row.is_some(); - self.show_footer = height > 6; - self.max_n_rows_to_display = - (height - 1 - u16::from(self.show_footer) * (4 + u16::from(self.narrow_term))) as usize; - self.scroll_padding = (self.max_n_rows_to_display / 4).min(5); - } - fn update_offset(&mut self) { let Some(selected) = self.selected_row else { return; @@ -130,6 +117,36 @@ impl<'a> ListState<'a> { .min(global_max_offset); } + pub fn set_term_size(&mut self, width: u16, height: u16) { + self.term_width = width; + self.term_height = height; + + if height == 0 { + return; + } + + let wide_help_footer_width = 95; + // The help footer is shorter when nothing is selected. + self.narrow_term = width < wide_help_footer_width && self.selected_row.is_some(); + + let header_height = 1; + // 2 separator, 1 progress bar, 1-2 footer message. + let footer_height = 4 + u16::from(self.narrow_term); + self.show_footer = height > header_height + footer_height; + + if self.show_footer { + self.separator_line = "─".as_bytes().repeat(width as usize); + } + + self.max_n_rows_to_display = height + .saturating_sub(header_height + u16::from(self.show_footer) * footer_height) + as usize; + + self.scroll_padding = (self.max_n_rows_to_display / 4).min(MAX_SCROLL_PADDING); + + self.update_offset(); + } + fn draw_rows( &self, stdout: &mut StdoutLock, @@ -196,8 +213,6 @@ impl<'a> ListState<'a> { stdout.write_all(b"Path")?; next_ln_overwrite(stdout)?; - self.update_offset(); - // Rows let iter = self.app_state.exercises().iter().enumerate(); let n_displayed_rows = match self.filter { @@ -228,7 +243,7 @@ impl<'a> ListState<'a> { next_ln(stdout)?; if self.message.is_empty() { - // Help footer + // Help footer message if self.selected_row.is_some() { stdout.write_all( "↓/j ↑/k home/g end/G | ontinue at | eset exercise".as_bytes(), @@ -240,6 +255,7 @@ impl<'a> ListState<'a> { stdout.write_all(b" | filter ")?; } } else { + // Nothing selected (and nothing shown), so only display filter and quit. stdout.write_all(b"filter ")?; } @@ -262,7 +278,9 @@ impl<'a> ListState<'a> { } Filter::None => stdout.write_all(b"one/

ending")?, } + stdout.write_all(b" | uit list")?; + if self.narrow_term { next_ln_overwrite(stdout)?; } else { @@ -282,6 +300,11 @@ impl<'a> ListState<'a> { stdout.queue(EndSynchronizedUpdate)?.flush() } + fn set_selected(&mut self, selected: usize) { + self.selected_row = Some(selected); + self.update_offset(); + } + fn update_rows(&mut self) { self.n_rows_with_filter = match self.filter { Filter::Done => self @@ -301,12 +324,13 @@ impl<'a> ListState<'a> { if self.n_rows_with_filter == 0 { self.selected_row = None; - } else { - self.selected_row = Some( - self.selected_row - .map_or(0, |selected| selected.min(self.n_rows_with_filter - 1)), - ); + return; } + + self.set_selected( + self.selected_row + .map_or(0, |selected| selected.min(self.n_rows_with_filter - 1)), + ); } #[inline] @@ -321,25 +345,25 @@ impl<'a> ListState<'a> { pub fn select_next(&mut self) { if let Some(selected) = self.selected_row { - self.selected_row = Some((selected + 1).min(self.n_rows_with_filter - 1)); + self.set_selected((selected + 1).min(self.n_rows_with_filter - 1)); } } pub fn select_previous(&mut self) { if let Some(selected) = self.selected_row { - self.selected_row = Some(selected.saturating_sub(1)); + self.set_selected(selected.saturating_sub(1)); } } pub fn select_first(&mut self) { if self.n_rows_with_filter > 0 { - self.selected_row = Some(0); + self.set_selected(0); } } pub fn select_last(&mut self) { if self.n_rows_with_filter > 0 { - self.selected_row = Some(self.n_rows_with_filter - 1); + self.set_selected(self.n_rows_with_filter - 1); } } @@ -374,9 +398,12 @@ impl<'a> ListState<'a> { }; let exercise_ind = self.selected_to_exercise_ind(selected)?; - let exercise_path = self.app_state.reset_exercise_by_ind(exercise_ind)?; + let exercise_name = self.app_state.reset_exercise_by_ind(exercise_ind)?; self.update_rows(); - write!(self.message, "The exercise {exercise_path} has been reset")?; + write!( + self.message, + "The exercise `{exercise_name}` has been reset", + )?; Ok(()) }