wip

.gitignore

@@ -2,3 +2,4 @@
 /.vscode
 /*.csv
 /*.nscim
+/plot.png

src/app/app.rs

@@ -8,11 +8,11 @@ use std::{
 
 use ratatui::{
     DefaultTerminal, Frame,
-    crossterm::event,
-    layout::{self, Constraint, Layout, Rect},
+    crossterm::event::{self, KeyCode},
+    layout::{self, Constraint, Layout, Margin, Rect},
     prelude,
     style::{Color, Modifier, Style},
-    widgets::{Paragraph, Widget},
+    widgets::{Block, Borders, Paragraph, Widget},
 };
 
 use crate::app::{
@@ -20,6 +20,7 @@ use crate::app::{
     error_msg::StatusMessage,
     logic::{calc::Grid, cell::CellType},
     mode::Mode,
+    plot::Plot,
     screen::ScreenSpace,
 };
 
@@ -35,6 +36,7 @@ pub struct App {
     // this could probably be a normal array
     pub marks: HashMap<char, (usize, usize)>,
     pub clipboard: Clipboard,
+    pub plot_popup: Option<Plot>,
 }
 
 impl Widget for &App {
@@ -42,7 +44,7 @@ impl Widget for &App {
         let (x_max, y_max) = self.screen.how_many_cells_fit_in(&area, &self.vars);
 
         let is_selected = |x: usize, y: usize| -> bool {
-            if let Mode::Visual((mut x1, mut y1)) = self.mode {
+            if let Mode::Visual((mut x1, mut y1)) | Mode::VisualCmd((mut x1, mut y1), _) = self.mode {
                 let (mut x2, mut y2) = self.grid.cursor();
                 x1 += 1;
                 y1 += 1;
@@ -80,10 +82,6 @@ impl Widget for &App {
                     y_idx = y as usize - 1 + self.screen.scroll_y();
                 }
 
-                if is_selected(x.into(), y.into()) {
-                    style = style.fg(Color::LightMagenta).bg(Color::Blue);
-                }
-
                 const ORANGE1: Color = Color::Rgb(200, 160, 0);
                 const ORANGE2: Color = Color::Rgb(180, 130, 0);
 
@@ -171,6 +169,10 @@ impl Widget for &App {
                             }
                             None => should_render = false,
                         }
+
+                        if is_selected(x.into(), y.into()) {
+                            style = style.bg(Color::Blue);
+                        }
                         if (x_idx, y_idx) == self.grid.cursor() {
                             should_render = true;
                             style = Style::new().fg(Color::Black).bg(Color::White);
@@ -217,6 +219,7 @@ impl App {
             marks: HashMap::new(),
             clipboard: Clipboard::new(),
             file_modified_date: SystemTime::now(),
+            plot_popup: None,
         }
     }
 
@@ -315,9 +318,46 @@ impl App {
             )),
             cmd_line_debug,
         );
+
+        // popups
+        if let Some(plot) = &self.plot_popup {
+            let block = Block::default()
+                .title("Plot Editor")
+                .title_alignment(layout::Alignment::Center)
+                .border_type(ratatui::widgets::BorderType::Rounded)
+                .borders(Borders::all())
+                .style(Style::default().fg(Color::White));
+            let popup_y = 20;
+            let popup_x = 40;
+
+            let a = frame.area();
+            let xpos = (a.width / 2) - (popup_x / 2);
+            let ypos = (a.height / 2) - (popup_y / 2);
+            let area = Rect::new(xpos, ypos, popup_x, popup_y);
+
+            frame.render_widget(ratatui::widgets::Clear, area);
+            frame.render_widget(block, area);
+
+            let area = area.inner(Margin::new(1, 1));
+            frame.render_widget(plot, area);
+        }
     }
 
     fn handle_events(&mut self) -> io::Result<()> {
+        if let Some(plot) = &mut self.plot_popup {
+            if let event::Event::Key(key) = event::read()? {
+                match key.code {
+                    KeyCode::Esc => self.plot_popup = None,
+                    KeyCode::PrintScreen | KeyCode::Enter => unimplemented!("Generate plot data"),
+                    KeyCode::Delete => plot.del_column(),
+                    KeyCode::Insert => plot.add_column(),
+                    KeyCode::Char(c) => plot.process_key(c),
+                    _ => {}
+                }
+            }
+            return Ok(());
+        }
+
         match &mut self.mode {
             Mode::VisualCmd(pos, chord) => match event::read()? {
                 event::Event::Key(key) => match key.code {

src/app/mod.rs

@@ -4,3 +4,4 @@ mod error_msg;
 mod screen;
 mod logic;
 mod clipboard;
+mod plot;

src/app/mode.rs

@@ -1,5 +1,8 @@
 use std::{
-    cmp::{max, min}, fmt::Display, fs, path::PathBuf
+    cmp::{max, min},
+    fmt::Display,
+    fs,
+    path::PathBuf, process::Command,
 };
 
 use ratatui::{
@@ -12,9 +15,9 @@ use crate::app::{
     app::App,
     error_msg::StatusMessage,
     logic::{
-        calc::{CSV_EXT, CUSTOM_EXT, LEN},
+        calc::{CSV_EXT, CUSTOM_EXT, Grid, LEN},
         cell::CellType,
-    },
+    }, plot::Plot,
 };
 
 pub enum Mode {
@@ -146,14 +149,81 @@ impl Mode {
                 _ => {}
             }
         }
-        if let Mode::VisualCmd(pos, editor ) = &mut app.mode {
+        if let Mode::VisualCmd(pos, editor) = &mut app.mode {
             let cmd = &editor.as_string()[1..];
             let args = cmd.split_ascii_whitespace().collect::<Vec<&str>>();
             if args.is_empty() {
                 return;
             }
+
+            // These values are going to be used in probably all
+            // the commands related to ranges, we will just write
+            // logic here first, once.
+            let (x1, y1) = pos;
+            let (x1, y1) = (*x1, *y1);
+            let (x2, y2) = app.grid.cursor();
+            let (low_x, hi_x) = if x1 < x2 { (x1, x2) } else { (x2, x1) };
+            let (low_y, hi_y) = if y1 < y2 { (y1, y2) } else { (y2, y1) };
+
+            let mut save_range = |to: &str| {
+                let mut g = Grid::new();
+                for (i, x) in (low_x..=hi_x).enumerate() {
+                    for (j, y) in (low_y..=hi_y).enumerate() {
+                        g.set_cell_raw((i, j), app.grid.get_cell_raw(x, y).clone());
+                    }
+                }
+                if let Err(_e) = g.save_to(to) {
+                    app.msg = StatusMessage::error("Failed to save file");
+                }
+            };
+
+            let get_project_name = || {
+                if let Some(file) = &app.file {
+                    if let Some(name) = file.file_name() {
+                        if let Some(name) = name.to_str() {
+                            return name;
+                        }
+                    }
+                }
+                return "unknown"
+            };
+
             match args[0] {
-                "foo" => {}
+                "export" => {
+                    if let Some(arg1) = args.get(1) {
+                        save_range(&arg1);
+                    } else {
+                        app.msg = StatusMessage::error("export <path.csv>")
+                    }
+                    app.mode = Mode::Normal
+                }
+                "plot" => {
+                    app.plot_popup = Some(Plot::new(0, 1));
+                    return;
+                    // Use gnuplot to plot the selected data.
+                    // * Temp data will be stored in /tmp/
+                    // * Output will either be plot.png or a name that you pass in
+                    let output_filename = if let Some(arg1) = args.get(1) {
+                        arg1
+                    } else {
+                        "plot.png"
+                    };
+
+                    save_range("/tmp/plot.csv");
+                    let plot = include_str!("../../template.gnuplot");
+                    let s = plot.replace("$FILE", "/tmp/plot.csv");
+                    let s = s.replace("$TITLE", get_project_name());
+                    let s = s.replace("$XLABEL", "hard-coded x");
+                    let s = s.replace("$YLABEL", "hard-coded y");
+                    let s = s.replace("$OUTPUT", "/tmp/output.png");
+                    let _ = fs::write("/tmp/plot.p", s);
+
+                    let _ = Command::new("gnuplot").arg("/tmp/plot.p").output();
+                    let _ = fs::copy("/tmp/output.png", output_filename);
+
+                    app.msg = StatusMessage::info("Wrote gnuplot data to /tmp");
+                    app.mode = Mode::Normal
+                }
                 _ => {}
             }
         }
@@ -346,7 +416,7 @@ impl Mode {
             // Keys are process in the handle_event method in App for these
             Mode::Insert(_chord) => {}
             Mode::Command(_chord) => {}
-            Mode::VisualCmd(_pos, _chord ) => {}
+            Mode::VisualCmd(_pos, _chord) => {}
         }
     }
 

src/app/plot.rs

@@ -0,0 +1,45 @@
+use ratatui::{layout::{Constraint, Direction, Layout}, widgets::{Paragraph, Widget}};
+
+pub struct Plot {
+    x: usize,
+    y: Vec<usize>,
+}
+impl Plot {
+    pub fn new(x: usize, y: usize) -> Self {
+        Self {
+            x,
+            y: vec![y],
+        }
+    }
+
+    pub fn add_column(&mut self) {
+        self.y.push(1)
+    }
+    pub fn del_column(&mut self) {
+        self.y.pop();
+    }
+
+    pub fn process_key(&mut self, c: char) {
+
+    }
+}
+
+impl Widget for &Plot {
+    fn render(self, area: ratatui::prelude::Rect, buf: &mut ratatui::prelude::Buffer) {
+        // plus 1 for x
+        let columns = self.y.len() + 1;
+
+        let mut constraints = Vec::new();
+        for _ in 0..=columns {
+            constraints.push(Constraint::Min(1));
+        }
+
+        Paragraph::new("Foobar").render(area, buf);
+        let layout = Layout::default()
+            .direction(Direction::Vertical)
+            .constraints(constraints)
+            .split(area);
+
+        let x_space = layout[0];
+    }
+}

template.gnuplot

@@ -1,10 +1,10 @@
-datafile = 'data.csv'
+datafile = '$FILE'
 set datafile separator ','
 
-set title 'Probably the filename'
+set title '$TITLE'
 set key autotitle columnhead
-set xlabel "x"
-set ylabel "y"
+set xlabel "$XLABEL"
+set ylabel "$YLABEL"
 
 set style line 1 linewidth 2 linecolor 1 pointtype 7 pointsize 1.5
 
@@ -12,6 +12,6 @@ set autoscale
 set grid
 
 set term png size 1280, 720
-set output 'output.png'
+set output '$OUTPUT'
 plot datafile using 1:2 with linespoints linestyle 1 
 replot