Whatever I had written on Ducartes already

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Cargo.toml

@@ -0,0 +1,17 @@
+[package]
+name = "ducartes"
+version = "0.1.0"
+authors = ["Getty Ritter <ducartes@infinitenegativeutility.com>"]
+
+[dependencies]
+gtk = { version = "0.2", features = ["v3_22"] }
+gdk = "0.6"
+rand = "0.4.2"
+failure = "0.1.1"
+serde = "1.0.43"
+serde_json = "1.0"
+serde_derive = "1.0.43"
+zip = "0.3"
+image = "0.19"
+cairo-rs = "0.2.0"
+clap = "*"

src/cfg.rs

@@ -0,0 +1,24 @@
+extern crate clap;
+
+use constants;
+
+pub struct Cfg {
+    pub file_path: Option<String>,
+}
+
+pub fn ducartes_args() -> Cfg {
+    let matches =
+        clap::App::new(constants::PROGRAM_NAME)
+        .version(constants::PROGRAM_VERSION)
+        .author(constants::PROGRAM_AUTHOR)
+
+        .arg(clap::Arg::with_name("i")
+             .short("i")
+             .long("input")
+             .value_name("FILE")
+             .help("The document to load on starting"))
+        .get_matches();
+
+    let file_path = matches.value_of("input").map(|x| x.to_owned());
+    Cfg { file_path }
+}

src/constants.rs

@@ -0,0 +1,5 @@
+pub const PROGRAM_NAME: &'static str = "Ducartes";
+pub const PROGRAM_SLUG: &'static str = "ducartes";
+pub const PROGRAM_VERSION: &'static str = "0.0";
+pub const PROGRAM_AUTHOR: &'static str =
+    "Getty Ritter <ducartes@infinitenegativeutility.com>";

src/grammar.rs

@@ -0,0 +1,171 @@
+use std::ops;
+use std::collections::{HashMap, HashSet};
+use std::hash::Hash;
+use rand::{Rng, thread_rng};
+
+/// Our indices here are two 32-bit signed values.
+type Index = (i32, i32);
+/// A `SparseBoard` here is a board that may or may not have every
+/// tile filled in, which we represent as a hashmap from indices to
+/// cells. When we use a `SparseBoard` as the LHS of a rule, we try to
+/// match every cell provided, but don't bother matching the cells
+/// which aren't provided; when we use one as the RHS of a rule, we
+/// instead overwrite only those cells provided in the board.
+///
+/// A `SparseBoard` has a conceptual center, which is the cell at
+/// index `(0, 0)`. Indices in a `SparseBoard` can be negative.
+type SparseBoard<Cell> = HashMap<Index, Cell>;
+
+/// The most important parts of a `Rule` are its LHS and its
+/// RHS. These correspond respectively to the patterns which are
+/// matched, and the cells that are used to replace those
+/// patterns. Note that both of these are sparse boards: a pattern may
+/// be an arbitrary shape, and its replacement may replace all, some,
+/// or none of the cells matched by the LHS.
+pub struct Rule<Cell> {
+    pub rule_name: Option<String>,
+    pub requires: HashSet<Cell>,
+    pub lhs: SparseBoard<Cell>,
+    pub rhs: SparseBoard<Cell>,
+}
+
+pub struct Board<Cell> {
+    pub width: u32,
+    pub height: u32,
+    pub cells: Vec<Cell>,
+    pub contents: HashSet<Cell>,
+}
+
+impl<Cell: Clone + Hash + Eq> Board<Cell> {
+    pub fn new(width: u32, height: u32, default: Cell) -> Board<Cell> {
+        let cells = (0..width*height).map(|_| default.clone()).collect();
+        let contents = vec![default].into_iter().collect();
+        Board { width, height, cells, contents }
+    }
+
+    pub fn get<'a>(&'a self, (w, h): Index) -> Option<&'a Cell> {
+        if w > 0 && w < self.width as i32 && h > 0 && h < self.height as i32 {
+            Some(&self[(w, h)])
+        } else {
+            None
+        }
+    }
+
+    pub fn indices(&self) -> Vec<Index> {
+        let mut v = Vec::new();
+        for x in 0..self.width {
+            for y in 0..self.height {
+                v.push((x as i32, y as i32))
+            }
+        }
+        v
+    }
+
+    pub fn random_indices(&self) -> Vec<Index> {
+        let mut v = self.indices();
+        {
+            let slice = v.as_mut_slice();
+            thread_rng().shuffle(slice);
+        }
+        v
+    }
+}
+
+impl Board<char> {
+    pub fn print(&self) {
+        for x in 0..self.width {
+            for y in 0..self.height {
+                print!("{} ", self[(x as i32, y as i32)]);
+            }
+            println!("");
+        }
+    }
+}
+
+impl<Cell> ops::Index<Index> for Board<Cell> {
+    type Output = Cell;
+
+    fn index(&self, (w, h): Index) -> &Cell {
+        let n: usize = (w + (h * self.width as i32)) as usize;
+        &self.cells[n as usize]
+    }
+}
+
+impl<Cell> ops::IndexMut<Index> for Board<Cell> {
+    fn index_mut(&mut self, (w, h): Index) -> &mut Cell {
+        let n: usize = (w + (h * self.width as i32)) as usize;
+        &mut self.cells[n as usize]
+    }
+}
+
+impl<Cell: Clone + Hash + Eq> Rule<Cell> {
+    /// Create a new `Rule` from two sparse grids of cells,
+    /// corresponding respectively to the LHS and the RHS
+    pub fn new(
+        lhs: SparseBoard<Cell>,
+        rhs: SparseBoard<Cell>,
+    ) -> Rule<Cell> {
+        let rule_name = None;
+        let requires = lhs.values().cloned().collect();
+        Rule { rule_name, requires, lhs, rhs }
+    }
+
+    /// Get mutable access to the LHS of the `Rule`, for modification
+    /// later
+    pub fn lhs_mut(&mut self) -> &mut SparseBoard<Cell> {
+        &mut self.lhs
+    }
+
+    /// Get mutable access to the RHS of the `Rule`, for modification
+    /// later
+    pub fn rhs_mut(&mut self) -> &mut SparseBoard<Cell> {
+        &mut self.lhs
+    }
+
+    /// Attempt to apply this rule to the provided board at random
+    /// (i.e. if there are multiple possible applications of this
+    /// rule, then it should choose one of them entirely at random
+    pub fn apply_to_board(&self, b: &mut Board<Cell>) -> bool {
+        // for each random location in the board
+        'outer: for (x, y) in b.random_indices() {
+            // find out whether each of our tiles matche
+            for (&(i, j), v) in self.lhs.iter() {
+                // if a given tile doesn't, then skip ahead
+                match b.get((x + i, y + j)) {
+                    Some(r) if v == r => (),
+                    _ => continue 'outer,
+                }
+            }
+
+            // if all of them match, then do the rewrites!
+            for (&(i, j), r) in self.rhs.iter() {
+                b[(x + i, y + j)] = r.clone();
+            }
+
+            // and because the rule applied, we can quit now
+            return true;
+        }
+        // if we've tried them all and none of them worked, then we've
+        // failed
+        false
+    }
+}
+
+
+#[cfg(test)]
+#[test]
+pub fn grammar_test() {
+    let rule1: Rule<char> = Rule::new(
+        vec![ ((0, 0), 'x') ].into_iter().collect(),
+        vec![ ((0, 0), 'y'), ((1, 0), 'y') ].into_iter().collect(),
+    );
+    let rule2: Rule<char> = Rule::new(
+        vec![ ((0, 0), 'y') ].into_iter().collect(),
+        vec![ ((0, 0), 'z') ].into_iter().collect(),
+    );
+    let mut board = Board::new(8, 8, '.');
+    board[(2, 2)] = 'x';
+    assert!(true, rule1.apply_to_board(&mut board));
+    assert!(true, rule2.apply_to_board(&mut board));
+    board.print();
+}

src/main.rs

@@ -0,0 +1,23 @@
+extern crate cairo;
+extern crate gdk;
+extern crate gtk;
+extern crate rand;
+extern crate failure;
+extern crate image;
+extern crate zip;
+extern crate serde;
+#[macro_use] extern crate serde_derive;
+extern crate serde_json;
+
+pub mod cfg;
+pub mod constants;
+pub mod grammar;
+pub mod model;
+pub mod strings;
+pub mod view;
+
+fn main() {
+    let cfg = cfg::ducartes_args();
+    let state = model::State::new(cfg);
+    view::App::run();
+}

src/model/document.rs

@@ -0,0 +1,110 @@
+use failure::Error;
+use image;
+use serde_json;
+use std::io::{Read, Write, Seek};
+use zip::{ZipArchive, ZipWriter};
+
+/// This value represents both the current document in-memory as well
+/// as the entirety of the values that we will want to both save and
+/// restore.
+pub struct Document {
+    pub tilesheet: image::DynamicImage,
+    pub metadata: Metadata,
+    pub rules: (),
+}
+
+/// This should be renamed probably, but it's the configuration-level
+/// info about a document (e.g. the tile size)
+#[derive(Debug, PartialEq, Eq, Serialize, Deserialize)]
+pub struct Metadata {
+    pub tile_width: u16,
+    pub tile_height: u16,
+    pub config_loop_forever: bool,
+}
+
+impl Document {
+    /// Attempt to read a `Document` from anything which implements
+    /// `Read` and `Seek`. The file format for Palladio files is
+    /// documented externally.
+    pub fn open_from_file<R: Read + Seek>(r: &mut R) -> Result<Document, Error> {
+        let mut archive = ZipArchive::new(r)?;
+        let tilesheet = {
+            let mut buf = Vec::new();
+            archive.by_name("tilesheet.png")?.read_to_end(&mut buf)?;
+            image::load_from_memory(&buf)?
+        };
+        let metadata = {
+            let file = archive.by_name("metadata.json")?;
+            serde_json::from_reader(file)?
+        };
+        let rules = {
+            let file = archive.by_name("rules.json")?;
+            serde_json::from_reader(file)?
+        };
+        Ok(Document{ tilesheet, metadata, rules })
+    }
+
+    /// Attempt to write a `Document` from anything which implements
+    /// `Write` and `Seek`. The file format for Palladio files is
+    /// documented externally.
+    pub fn save_to_file<W: Write + Seek>(&self, w: &mut W) -> Result<(), Error> {
+        use zip::write::FileOptions;
+
+        let mut zip = ZipWriter::new(w);
+        zip.start_file("tilesheet.png", FileOptions::default())?;
+        self.tilesheet.write_to(&mut zip, image::ImageOutputFormat::PNG)?;
+
+        zip.start_file("metadata.json", FileOptions::default())?;
+        serde_json::to_writer(&mut zip, &self.metadata)?;
+
+        zip.start_file("rules.json", FileOptions::default())?;
+        serde_json::to_writer(&mut zip, &self.rules)?;
+
+        zip.start_file("info.txt", FileOptions::default())?;
+        writeln!(
+            &mut zip,
+            "Created by {} v{}",
+            ::constants::PROGRAM_NAME,
+            ::constants::PROGRAM_VERSION,
+        )?;
+
+        zip.finish()?;
+        Ok(())
+    }
+
+    /// Create a new fresh document with an empty 32x32 image, a
+    /// configured tile size of 16x16, and no rules
+    pub fn default() -> Document {
+        Document {
+            tilesheet: image::DynamicImage::new_rgb8(32, 32),
+            metadata: Metadata {
+                tile_width: 16,
+                tile_height: 16,
+                config_loop_forever: false,
+            },
+            rules: (),
+        }
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::Document;
+    use std::io::{BufReader, Cursor};
+
+    #[test]
+    fn round_trip() {
+        // First, save our dummy `Document` to an in-memory buffer
+        let mut buf = Cursor::new(Vec::new());
+        let doc1 = Document::default();
+        doc1.save_to_file(&mut buf).unwrap();
+
+        // then take that buffer back, and reparse it
+        let buf = buf.into_inner();
+        let doc2 = Document::open_from_file(&mut BufReader::new(Cursor::new(buf))).unwrap();
+        // we can't assert equality over the image itself, so let's
+        // just assert that the other parts are equal
+        assert!(doc1.metadata == doc2.metadata);
+        assert!(doc1.rules == doc2.rules);
+    }
+}

src/model/mod.rs

@@ -0,0 +1,34 @@
+pub mod document;
+pub use self::document::*;
+use failure::Error;
+use cfg;
+
+pub struct State {
+    pub document: Document,
+    pub save_state: SaveState,
+}
+
+impl State {
+    pub fn new(conf: cfg::Cfg) -> Result<State, Error> {
+        Ok(match conf.file_path {
+            None => State {
+                document: Document::default(),
+                save_state: SaveState::Unsaved,
+            },
+            Some(path) => {
+                let mut f = ::std::fs::File::open(path)?;
+                State {
+                    document: Document::open_from_file(&mut f)?,
+                    save_state: SaveState::Saved,
+                }
+            },
+        })
+    }
+}
+
+#[derive(Debug)]
+pub enum SaveState {
+    Unsaved,
+    Modified,
+    Saved,
+}

src/strings.rs

@@ -0,0 +1,9 @@
+pub static OPEN_BTN: &'static str = "Open";
+pub static SAVE_BTN: &'static str = "Save";
+pub static SAVE_AS_BTN: &'static str = "Save As";
+
+pub static OPEN_DIALOG_BTN: &'static str = "Open";
+pub static CANCEL_DIALOG_BTN: &'static str = "Cancel";
+
+pub static TILESET_LABEL: &'static str = "Tileset";
+pub static TILESET_LOAD_BTN: &'static str = "Load Tileset Image";

src/view/canvas.rs

@@ -0,0 +1,62 @@
+use gdk;
+use gtk::{
+    self,
+    WidgetExt
+};
+use std::cell::RefCell;
+use std::rc::Rc;
+
+pub struct HexGridCanvas {
+    pub canvas: gtk::DrawingArea,
+    pub mouse_loc: Rc<RefCell<Option<(i32, i32)>>>,
+}
+
+impl HexGridCanvas {
+    pub fn new() -> HexGridCanvas {
+        let canvas = gtk::DrawingArea::new();
+        let mouse_loc = Rc::new(RefCell::new(None));
+        let reader_mouse = mouse_loc.clone();
+        let writer_mouse = mouse_loc.clone();
+
+        canvas.connect_draw(move |cv, ctx| {
+            let w = cv.get_allocated_width();
+            let h = cv.get_allocated_height();
+            ctx.set_source_rgb(1.0, 1.0, 1.0);
+            ctx.rectangle(0.0, 0.0, w as f64, h as f64);
+            ctx.fill();
+
+            ctx.set_source_rgb(0.9, 0.9, 0.9);
+            reader_mouse.borrow().map(|(x, y)| {
+                ctx.rectangle(x as f64 * 32.0, y as f64 * 32.0, 32.0, 32.0);
+                ctx.fill();
+            });
+
+            ctx.set_source_rgb(0.8, 0.8, 0.8);
+            for x in 0..((w / 32) + 1) {
+                ctx.move_to(x as f64 * 32.0, 0.0);
+                ctx.line_to(x as f64 * 32.0, h as f64);
+                ctx.stroke();
+            }
+            for y in 0..((h / 32) + 1) {
+                ctx.move_to(0.0, y as f64 * 32.0);
+                ctx.line_to(w as f64, y as f64 * 32.0);
+                ctx.stroke();
+            }
+            gtk::Inhibit(false)
+        });
+
+        canvas.connect_motion_notify_event(move |cv, motion| {
+            let (x, y) = motion.get_position();
+            *writer_mouse.borrow_mut() = Some((x as i32 / 32, y as i32 / 32));
+            cv.queue_draw();
+            gtk::Inhibit(false)
+        });
+
+        canvas.add_events(gdk::POINTER_MOTION_MASK.bits() as i32);
+
+        HexGridCanvas {
+            canvas,
+            mouse_loc,
+        }
+    }
+}

src/view/mod.rs

@@ -0,0 +1,206 @@
+mod canvas;
+mod picker;
+
+use gdk;
+use gtk::{
+    self,
+    BoxExt,
+    EntryExt,
+    ContainerExt,
+    HeaderBarExt,
+    PanedExt,
+    WindowExt,
+    WidgetExt,
+    DialogExt,
+    FileChooserExt,
+    ButtonExt,
+};
+use std::process;
+
+use constants;
+use strings;
+use self::canvas::HexGridCanvas;
+use self::picker::Picker;
+
+
+/// The `App` is the main window that contains everything
+pub struct App {
+    pub window: gtk::Window,
+    pub canvas: HexGridCanvas,
+    pub container: gtk::Paned,
+    pub toolbar: Toolbar,
+    pub header: Header,
+}
+
+impl App {
+    fn new() -> App {
+        let window = gtk::Window::new(gtk::WindowType::Toplevel);
+        let container = gtk::Paned::new(gtk::Orientation::Horizontal);
+        let header = Header::new();
+        let canvas = HexGridCanvas::new();
+
+        window.add_events(gdk::POINTER_MOTION_MASK.bits() as i32);
+        window.set_titlebar(&header.container);
+        window.set_title(constants::PROGRAM_NAME);
+        window.set_wmclass(
+            constants::PROGRAM_SLUG,
+            constants::PROGRAM_NAME,
+        );
+
+        gtk::Window::set_default_icon_name("iconname");
+
+        window.connect_delete_event(move |_, _| {
+            gtk::main_quit();
+            gtk::Inhibit(false)
+        });
+
+        let toolbar = Toolbar::new();
+        container.pack1(&canvas.canvas, true, true);
+        container.pack2(&toolbar.toolbar, false, true);
+        window.add(&container);
+
+        App { window, header, canvas, toolbar, container }
+    }
+
+    pub fn run() {
+        if gtk::init().is_err() {
+            eprintln!("Failed to initialize GTK application");
+            process::exit(1);
+        }
+
+        let app = App::new();
+        app.window.show_all();
+        gtk::main();
+    }
+}
+
+// HEADER
+
+/// The `Header` is the top toolbar; it contains buttons for opening
+/// and saving documents as well as document status
+pub struct Header {
+    pub container: gtk::HeaderBar,
+    pub open_btn: gtk::Button,
+    pub save_btn: gtk::Button,
+    pub save_as_btn: gtk::Button,
+}
+
+impl Header {
+    fn new() -> Header {
+        let container = gtk::HeaderBar::new();
+        container.set_title(constants::PROGRAM_NAME);
+        container.set_show_close_button(true);
+
+        let open_btn = gtk::Button::new_with_label(
+            strings::OPEN_BTN
+        );
+        let save_btn = gtk::Button::new_with_label(
+            strings::SAVE_BTN,
+        );
+        let save_as_btn = gtk::Button::new_with_label(
+            strings::SAVE_AS_BTN,
+        );
+
+        container.pack_start(&open_btn);
+        container.pack_end(&save_btn);
+        container.pack_end(&save_as_btn);
+
+        open_btn.connect_clicked(Header::do_open);
+        open_btn.connect_clicked(Header::do_save);
+        open_btn.connect_clicked(Header::do_save);
+
+        Header { container, open_btn, save_btn, save_as_btn }
+    }
+
+    fn do_open(_: &gtk::Button) {
+        let open_dialog = gtk::FileChooserDialog::new(
+            Some("Open"),
+            Some(&gtk::Window::new(gtk::WindowType::Popup)),
+            gtk::FileChooserAction::Open,
+        );
+
+        open_dialog.add_button(
+            strings::CANCEL_DIALOG_BTN,
+            gtk::ResponseType::Cancel.into(),
+        );
+        open_dialog.add_button(
+            strings::OPEN_DIALOG_BTN,
+            gtk::ResponseType::Ok.into(),
+        );
+
+        // if open_dialog.run() == gtk::ResponseType::Ok.into() {
+        //     println!("got {:?}", open_dialog.get_filename());
+        // }
+
+        open_dialog.destroy();
+    }
+
+    fn do_save(_: &gtk::Button) {
+        let save_dialog = gtk::FileChooserDialog::new(
+            Some("Open"),
+            Some(&gtk::Window::new(gtk::WindowType::Popup)),
+            gtk::FileChooserAction::Open,
+        );
+
+        save_dialog.add_button(
+            strings::CANCEL_DIALOG_BTN,
+            gtk::ResponseType::Cancel.into(),
+        );
+        save_dialog.add_button(
+            strings::OPEN_DIALOG_BTN,
+            gtk::ResponseType::Ok.into(),
+        );
+
+        // if save_dialog.run() == gtk::ResponseType::Ok.into() {
+        //     println!("got {:?}", save_dialog.get_filename());
+        // }
+
+        save_dialog.destroy();
+    }
+}
+
+/// The `Toolbar` is the pane on the right that contains tileset
+/// information: this includes tileset info like width, height, and
+/// source image, as well as the tile picker for elsewhere
+pub struct Toolbar {
+    toolbar: gtk::Box,
+    tile_width: gtk::Entry,
+    tile_height: gtk::Entry,
+    load_tileset_btn: gtk::Button,
+    picker: Picker,
+}
+
+impl Toolbar {
+    fn new() -> Toolbar {
+        let container = gtk::Box::new(gtk::Orientation::Vertical, 5);
+
+        let tile_label = gtk::Label::new(
+            strings::TILESET_LABEL,
+        );
+
+        let tile_width = gtk::Entry::new();
+        tile_width.set_text("16");
+        let tile_height = gtk::Entry::new();
+        tile_height.set_text("16");
+
+        let load_tileset_btn = gtk::Button::new_with_label(
+            strings::TILESET_LOAD_BTN,
+        );
+
+        let picker = Picker::new();
+
+        container.pack_start(&tile_label, false, true, 0);
+        container.pack_start(&tile_width, false, true, 0);
+        container.pack_start(&tile_height, false, true, 0);
+        container.pack_start(&load_tileset_btn, false, true, 0);
+        container.pack_start(&picker.canvas, false, true, 0);
+
+        Toolbar {
+            toolbar: container,
+            tile_width,
+            tile_height,
+            load_tileset_btn,
+            picker,
+        }
+    }
+}

src/view/picker.rs

@@ -0,0 +1,56 @@
+use gdk;
+use gtk::{
+    self,
+    WidgetExt
+};
+use std::cell::RefCell;
+use std::rc::Rc;
+
+pub struct Picker {
+    pub canvas: gtk::DrawingArea,
+    pub mouse_loc: Rc<RefCell<Option<(i32, i32)>>>,
+}
+
+impl Picker {
+    pub fn new() -> Picker {
+        let canvas = gtk::DrawingArea::new();
+        let mouse_loc = Rc::new(RefCell::new(Some((2, 2))));
+        let reader_mouse = mouse_loc.clone();
+        let writer_mouse = mouse_loc.clone();
+
+        canvas.connect_draw(move |cv, ctx| {
+            let w = cv.get_allocated_width();
+            let h = cv.get_allocated_height();
+            ctx.set_source_rgb(1.0, 1.0, 1.0);
+            ctx.rectangle(0.0, 0.0, w as f64, h as f64);
+            ctx.fill();
+
+            reader_mouse.borrow().map(|(x, y)| {
+                ctx.set_source_rgb(0.9, 0.9, 0.9);
+                ctx.rectangle(
+                    x as f64 * 32.0,
+                    y as f64 * 32.0,
+                    32.0,
+                    32.0,
+                );
+                ctx.fill();
+            });
+            gtk::Inhibit(false)
+        });
+
+        canvas.connect_motion_notify_event(move |cv, motion| {
+            let (x, y) = motion.get_position();
+            *writer_mouse.borrow_mut() =
+                Some((x as i32 / 32, y as i32 / 32));
+            cv.queue_draw();
+            gtk::Inhibit(false)
+        });
+
+        canvas.add_events(gdk::POINTER_MOTION_MASK.bits() as i32);
+
+        Picker {
+            canvas,
+            mouse_loc,
+        }
+    }
+}