lines, barebones drawing window

addition of lines means ipc slightly changed, though can be ignored. also, minor malvim fix

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "ming-wm"
-version = "1.1.0"
+version = "1.2.0-beta.0"
 repository = "https://github.com/stjet/ming-wm"
 license = "GPL-3.0-or-later"
 edition = "2021"
@@ -63,3 +63,7 @@ path = "src/bin/malvim.rs"
 [[bin]]
 name = "mingGames_Reversi"
 path = "src/bin/reversi.rs"
+
+[[bin]]
+name = "mingUtils_Draw"
+path = "src/bin/draw.rs"

docs/window-likes/draw.md

@@ -0,0 +1,14 @@
+Very basic drawing board.
+
+## Moving
+
+Arrow keys or hjkl. `i` to enter input mode. Use the enter key to finish a line or rectangle. Escape to cancel line or rectangle in progress.
+
+## Input Commands
+
+- `line`: Start line with current point as start. Move and hit enter to determine line endpoint
+- `rect`: Start rect with current point as a corner. Move and hit enter to determine the opposite corner
+- `color/c/colour [lowercase 6 char hex string]`: Set current colour
+- `linewidth/lw [int]`: Set current line width
+- `undo`: Undo last draw
+- `clear`: Clear all drawings

install

@@ -16,3 +16,4 @@ cp ./target/release/mingGames_Minesweeper /usr/local/bin/mingGames_Minesweeper
 cp ./target/release/mingFiles_File_Explorer /usr/local/bin/mingFiles_File_Explorer
 cp ./target/release/mingFiles_Audio_Player /usr/local/bin/mingFiles_Audio_Player
 cp ./target/release/mingEditing_Malvim /usr/local/bin/mingEditing_Malvim
+cp ./target/release/mingUtils_Draw /usr/local/bin/mingUtils_Draw

local-install

@@ -16,3 +16,4 @@ cp ./target/release/mingGames_Minesweeper ~/.local/bin/mingGames_Minesweeper
 cp ./target/release/mingFiles_File_Explorer ~/.local/bin/mingFiles_File_Explorer
 cp ./target/release/mingFiles_Audio_Player ~/.local/bin/mingFiles_Audio_Player
 cp ./target/release/mingEditing_Malvim ~/.local/bin/mingEditing_Malvim
+cp ./target/release/mingUtils_Draw ~/.local/bin/mingUtils_Draw

ming-wm-lib/src/serialize.rs

@@ -221,6 +221,7 @@ impl Serializable for DrawInstructions {
       DrawInstructions::Gradient(p, d, c1, c2, u) => format!("Gradient/{}\x1E{}\x1E{}\x1E{}\x1E{}", array_to_string(p), array_to_string(d), array_to_string(c1), array_to_string(c2), u),
       DrawInstructions::Bmp(p, s, b) => format!("Bmp/{}\x1E{}\x1E{}", array_to_string(p), s, b),
       DrawInstructions::Circle(p, u, c) => format!("Circle/{}\x1E{}\x1E{}", array_to_string(p), u, array_to_string(c)),
+      DrawInstructions::Line(s, e, w, c) => format!("Line/{}\x1E{}\x1E{}\x1E{}", array_to_string(s), array_to_string(e), w, array_to_string(c)),
     }
   }
   fn deserialize(serialized: &str) -> Result<Self, ()> {
@@ -402,6 +403,35 @@ impl Serializable for DrawInstructions {
         let c = get_color(arg.unwrap())?;
         Ok(DrawInstructions::Circle(p, u.unwrap(), c))
       },
+      "Line" => {
+        let rest = get_rest_of_split(&mut parts, Some("/"));
+        //(s, e, w, c)
+        let mut args = rest.split("\x1E");
+        let arg = args.next();
+        if arg.is_none() {
+          return Err(());
+        }
+        let s = get_two_array(arg.unwrap())?;
+        let arg = args.next();
+        if arg.is_none() {
+          return Err(());
+        }
+        let e = get_two_array(arg.unwrap())?;
+        let arg = args.next();
+        if arg.is_none() {
+          return Err(());
+        }
+        let w = arg.unwrap().parse();
+        if w.is_err() {
+          return Err(());
+        }
+        let arg = args.next();
+        if arg.is_none() {
+          return Err(());
+        }
+        let c = get_color(arg.unwrap())?;
+        Ok(DrawInstructions::Line(s, e, w.unwrap(), c))
+      },
       _ => Err(()),
     }
   }

ming-wm-lib/src/window_manager_types.rs

@@ -14,11 +14,18 @@ pub enum KeyChar {
 
 #[derive(Debug)]
 pub enum DrawInstructions {
+  /// Top left point, dimensions, colour
   Rect(Point, Dimensions, RGBColor),
-  Text(Point, Vec<String>, String, RGBColor, RGBColor, Option<usize>, Option<u8>), //font and text
+  /// Top left point, fonts, text, colour, background colour, horizontal spacing, monospace width
+  Text(Point, Vec<String>, String, RGBColor, RGBColor, Option<usize>, Option<u8>),
+  /// Top left point, dimensions, start colour, end colour, steps
   Gradient(Point, Dimensions, RGBColor, RGBColor, usize),
+  /// Top left point, path to file, reverse
   Bmp(Point, String, bool),
+  /// Centre point, radius, colour
   Circle(Point, usize, RGBColor),
+  /// Start point, end point, line width, line colour
+  Line(Point, Point, usize, RGBColor),
 }
 
 #[derive(Debug, PartialEq)]

src/bin/draw.rs

@@ -0,0 +1,235 @@
+use std::vec::Vec;
+use std::vec;
+
+use ming_wm_lib::window_manager_types::{ DrawInstructions, WindowLike, WindowLikeType };
+use ming_wm_lib::messages::{ WindowMessage, WindowMessageResponse };
+use ming_wm_lib::framebuffer_types::{ Dimensions, Point, RGBColor };
+use ming_wm_lib::themes::ThemeInfo;
+use ming_wm_lib::utils::{ hex_to_u8, HEX_CHARS, Substring };
+use ming_wm_lib::ipc::listen;
+
+enum DrawAction {
+  Line(Point, Option<Point>, usize, RGBColor),
+  Rect(Point, Option<Dimensions>, RGBColor),
+  //
+}
+
+impl DrawAction {
+  fn name(&self) -> String {
+    match self {
+      DrawAction::Line(_, _, _, _) => "Line",
+      DrawAction::Rect(_, _, _) => "Rect",
+    }.to_string()
+  }
+}
+
+#[derive(Default, PartialEq)]
+enum Mode {
+  #[default]
+  Move,
+  Input,
+}
+
+#[derive(Default)]
+struct Draw {
+  mode: Mode,
+  dimensions: Dimensions,
+  draw_actions: Vec<DrawAction>,
+  current_location: Point,
+  current_input: String,
+  current_color: RGBColor,
+  current_linewidth: usize,
+  current_action: Option<DrawAction>,
+}
+
+impl WindowLike for Draw {
+  fn handle_message(&mut self, message: WindowMessage) -> WindowMessageResponse {
+    match message {
+      WindowMessage::Init(dimensions) => {
+        self.dimensions = dimensions;
+        WindowMessageResponse::JustRedraw
+      },
+      WindowMessage::KeyPress(key_press) => {
+        if key_press.is_escape() && (self.current_action.is_some() || self.mode != Mode::Move) {
+          self.current_action = None;
+          self.mode = Mode::Move;
+          self.current_input = String::new();
+          WindowMessageResponse::JustRedraw
+        } else if self.mode == Mode::Input {
+          if key_press.is_backspace() && self.current_input.len() > 0 {
+            self.current_input = self.current_input.remove_last();
+            WindowMessageResponse::JustRedraw
+          } else if key_press.is_enter() {
+            //process current input
+            let mut parts = self.current_input.split(" ");
+            match parts.next().unwrap() {
+              "line" | "l" => {
+                self.current_action = Some(DrawAction::Line(self.current_location, None, self.current_linewidth, self.current_color));
+              },
+              "rect" | "r" => {
+                self.current_action = Some(DrawAction::Rect(self.current_location, None, self.current_color));
+              },
+              "colour" | "color" | "c" => {
+                //hex to u8
+                if let Some(hex_color) = parts.next() {
+                  if hex_color.len() == 6 && hex_color.chars().all(|c| HEX_CHARS.contains(&c)) {
+                    let mut hex_chars = hex_color.chars();
+                    self.current_color = [hex_to_u8(hex_chars.next().unwrap(), hex_chars.next().unwrap()), hex_to_u8(hex_chars.next().unwrap(), hex_chars.next().unwrap()), hex_to_u8(hex_chars.next().unwrap(), hex_chars.next().unwrap())];
+                  }
+                }
+              },
+              "linewidth" | "lw" => {
+                if let Ok(linewidth) = parts.next().unwrap_or("").parse::<usize>() {
+                  self.current_linewidth = linewidth;
+                }
+              },
+              "undo" | "u" => {
+                self.draw_actions.pop();
+              },
+              "clear" | "cl" => {
+                self.draw_actions = Vec::new();
+              },
+              _ => {},
+            };
+            self.mode = Mode::Move;
+            self.current_input = String::new();
+            WindowMessageResponse::JustRedraw
+          } else if key_press.is_regular() {
+            self.current_input += &key_press.key.to_string();
+            WindowMessageResponse::JustRedraw
+          } else {
+            WindowMessageResponse::DoNothing
+          }
+        } else if key_press.key == 'i' && self.current_action.is_none() {
+          self.mode = Mode::Input;
+          WindowMessageResponse::JustRedraw
+        } else if key_press.is_enter() {
+          if let Some(current_action) = &self.current_action {
+            self.draw_actions.push(match current_action {
+              DrawAction::Line(p, _, u, r) => DrawAction::Line(*p, Some(self.current_location), *u, *r),
+              DrawAction::Rect(p, _, r) => {
+                let d = [
+                  if self.current_location[0] > p[0] {
+                    self.current_location[0] - p[0]
+                  } else {
+                    p[0] - self.current_location[0]
+                  },
+                  if self.current_location[1] > p[1] {
+                    self.current_location[1] - p[1]
+                  } else {
+                    p[1] - self.current_location[1]
+                  }
+                ];
+                //find top left corner
+                let tl = [
+                  if p[0] < self.current_location[0] {
+                    p[0]
+                  } else {
+                    self.current_location[0]
+                  },
+                  if p[1] < self.current_location[1] {
+                    p[1]
+                  } else {
+                    self.current_location[1]
+                  }
+                ];
+                DrawAction::Rect(tl, Some(d), *r)
+              },
+            });
+            self.current_action = None;
+            WindowMessageResponse::JustRedraw
+          } else {
+            WindowMessageResponse::DoNothing
+          }
+        } else if key_press.is_up_arrow() || key_press.key == 'k' {
+          if self.current_location[1] > 0 {
+            self.current_location[1] -= 1;
+            WindowMessageResponse::JustRedraw
+          } else {
+            WindowMessageResponse::DoNothing
+          }
+        } else if key_press.is_down_arrow() || key_press.key == 'j' {
+          if self.current_location[1] + 1 < self.dimensions[1] {
+            self.current_location[1] += 1;
+            WindowMessageResponse::JustRedraw
+          } else {
+            WindowMessageResponse::DoNothing
+          }
+        } else if key_press.is_left_arrow() || key_press.key == 'h' {
+          if self.current_location[0] > 0 {
+            self.current_location[0] -= 1;
+            WindowMessageResponse::JustRedraw
+          } else {
+            WindowMessageResponse::DoNothing
+          }
+        } else if key_press.is_right_arrow() || key_press.key == 'l' {
+          if self.current_location[0] + 1 < self.dimensions[0] {
+            self.current_location[0] += 1;
+            WindowMessageResponse::JustRedraw
+          } else {
+            WindowMessageResponse::DoNothing
+          }
+        } else {
+          WindowMessageResponse::DoNothing
+        }
+      },
+      _ => WindowMessageResponse::DoNothing,
+    }
+  }
+
+  fn draw(&self, theme_info: &ThemeInfo) -> Vec<DrawInstructions> {
+    let mut instructions = Vec::new();
+    //draw previous actions
+    for action in &self.draw_actions {
+      instructions.push(match action {
+        DrawAction::Line(p1, p2, lw, c) => DrawInstructions::Line(*p1, p2.unwrap(), *lw, *c),
+        DrawAction::Rect(p, d, c) => DrawInstructions::Rect(*p, d.unwrap(), *c),
+      });
+    }
+    //draw cursor (crosshair)
+    let crosshair_min_x = self.current_location[0].checked_sub(6).unwrap_or(0);
+    let crosshair_min_y = self.current_location[1].checked_sub(6).unwrap_or(0);
+    //^going over should be handled by the drawer, probably?
+    instructions.push(DrawInstructions::Line([crosshair_min_x, self.current_location[1]], [self.current_location[0] + 6, self.current_location[1]], 1, self.current_color));
+    instructions.push(DrawInstructions::Line([self.current_location[0], crosshair_min_y], [self.current_location[0], self.current_location[1] + 6], 1, self.current_color));
+    //draw info or current input
+    instructions.push(DrawInstructions::Text([2, self.dimensions[1] - 19], vec!["nimbus-roman".to_string()], if self.current_input == String::new() {
+      if let Some(current_action) = &self.current_action {
+        current_action.name()
+      } else if self.mode == Mode::Move {
+        "'i' to enter input mode".to_string()
+      } else {
+        "Awaiting input".to_string()
+      }
+    } else {
+      self.current_input.clone()
+    }, theme_info.text, theme_info.background, None, None));
+    instructions
+  }
+
+  //properties
+
+  fn title(&self) -> String {
+    "Draw".to_string()
+  }
+
+  fn subtype(&self) -> WindowLikeType {
+    WindowLikeType::Window
+  }
+
+  fn ideal_dimensions(&self, _dimensions: Dimensions) -> Dimensions {
+    [410, 410]
+  }
+}
+
+impl Draw {
+  pub fn new() -> Self {
+    let mut d: Self = Default::default();
+    d.current_linewidth = 1;
+    d
+  }
+}
+
+pub fn main() {
+  listen(Draw::new());
+}

src/bin/malvim.rs

@@ -168,11 +168,14 @@ impl WindowLike for Malvim {
             self.state = State::None;
           } else if self.state == State::MaybeDelete {
             if key_press.key == 'd' {
-              current_file.content.remove(current_file.line_pos);
-              if current_file.content.len() == 0 {
-                current_file.content = vec![String::new()];
-              } else if current_file.line_pos == current_file.content.len() {
-                current_file.line_pos = current_file.content.len() - 1;
+              for _ in 0..self.maybe_num.unwrap_or(1) {
+                current_file.content.remove(current_file.line_pos);
+                if current_file.content.len() == 0 {
+                  current_file.content = vec![String::new()];
+                } else if current_file.line_pos == current_file.content.len() {
+                  current_file.line_pos = current_file.content.len() - 1;
+                  break;
+                }
               }
               let new_length = current_file.content[current_file.line_pos].chars().count();
               current_file.cursor_pos = calc_new_cursor_pos(current_file.cursor_pos, new_length);
@@ -392,7 +395,7 @@ impl WindowLike for Malvim {
             changed = false;
           }
           //reset maybe_num if not num
-          if !numbered && self.state != State::Maybeg {
+          if !numbered && self.state != State::Maybeg && self.state != State::MaybeDelete {
             self.maybe_num = None;
           }
         } else if self.mode == Mode::Command {

wm/src/framebuffer.rs

@@ -108,6 +108,7 @@ impl FramebufferWriter {
       .copy_from_slice(&color[..]);
   }
 
+  //straight horizontal line
   fn _draw_line(&mut self, start_pos: usize, bytes: &[u8]) {
     self.buffer[start_pos..(start_pos + bytes.len())]
       .copy_from_slice(bytes);
@@ -244,6 +245,34 @@ impl FramebufferWriter {
     }
   }
 
+  //line
+
+  pub fn draw_line(&mut self, start: Point, end: Point, width: usize, color: RGBColor) {
+    //leftmost point
+    let lm;
+    let rm;
+    if start[0] < end[0] || (start[0] == end[0] && end[1] > start[1]) {
+      lm = start;
+      rm = end;
+    } else {
+      lm = end;
+      rm = start;
+    };
+    let dx = (rm[0] - lm[0]) as f64; //will not be negative
+    let dy = rm[1] as f64 - lm[1] as f64; //surely no point will be big enough to lose data here?
+    let use_x = dy.abs() < dx;
+    //slope
+    let m = if use_x { dy / dx } else { dx / dy };
+    for ci in 0..if use_x { dx as usize } else { dy.abs() as usize } {
+      let i = if !use_x && dy < 0.0 { -(ci as f64) } else { ci as f64 };
+      let ix = if use_x { i } else { (m * i).round() };
+      let iy = if use_x { (m * i).round() } else { i };
+      for j in 0..width {
+        self.draw_pixel([(lm[0] as f64 + ix) as usize + j, (lm[1] as f64 + iy) as usize], color);
+      }
+    }
+  }
+
   //bmps
 
   //reverse is workaround for when my bmp lib returns rgba instead of bgra

wm/src/window_manager.rs

@@ -648,6 +648,13 @@ impl WindowManager {
     [top_left[0], top_left[1] + if is_window { WINDOW_TOP_HEIGHT } else { 0 }]
   }
 
+  fn prevent_overflow_dimensions(dimensions: Dimensions, window_dimensions: Dimensions, top_left: Point) -> Dimensions {
+    [
+      min(dimensions[0], window_dimensions[0] - top_left[0]),
+      min(dimensions[1], window_dimensions[1] - top_left[1]),
+    ]
+  }
+
   //another issue with a huge vector of draw instructions; it takes up heap memory
   pub fn draw(&mut self, maybe_redraw_ids: Option<Vec<usize>>, use_saved_buffer: bool) {
     let theme_info = get_theme_info(&self.theme).unwrap();
@@ -694,6 +701,7 @@ impl WindowManager {
             DrawInstructions::Text(top_left, fonts, text, color, bg_color, horiz_spacing, mono_width) => DrawInstructions::Text(WindowManager::get_true_top_left(top_left, is_window), fonts.clone(), text.clone(), *color, *bg_color, *horiz_spacing, *mono_width),
             DrawInstructions::Bmp(top_left, path, reverse) => DrawInstructions::Bmp(WindowManager::get_true_top_left(top_left, is_window), path.to_string(), *reverse),
             DrawInstructions::Gradient(top_left, dimensions, start_color, end_color, steps) => DrawInstructions::Gradient(WindowManager::get_true_top_left(top_left, is_window), *dimensions, *start_color, *end_color, *steps),
+            DrawInstructions::Line(start, end, width, color) => DrawInstructions::Line(WindowManager::get_true_top_left(start, is_window), WindowManager::get_true_top_left(end, is_window), *width, *color),
           }
         }).collect();
         //draw window background
@@ -729,10 +737,7 @@ impl WindowManager {
         match instruction {
           DrawInstructions::Rect(top_left, dimensions, color) => {
             //try and prevent overflows out of the window
-            let true_dimensions = [
-              min(dimensions[0], window_dimensions[0] - top_left[0]),
-              min(dimensions[1], window_dimensions[1] - top_left[1]),
-            ];
+            let true_dimensions = WindowManager::prevent_overflow_dimensions(dimensions, window_dimensions, top_left);
             window_writer.draw_rect(top_left, true_dimensions, color);
           },
           DrawInstructions::Circle(centre, radius, color) => {
@@ -746,7 +751,11 @@ impl WindowManager {
             window_writer.draw_bmp(top_left, path, reverse);
           },
           DrawInstructions::Gradient(top_left, dimensions, start_color, end_color, steps) => {
-            window_writer.draw_gradient(top_left, dimensions, start_color, end_color, steps);
+            let true_dimensions = WindowManager::prevent_overflow_dimensions(dimensions, window_dimensions, top_left);
+            window_writer.draw_gradient(top_left, true_dimensions, start_color, end_color, steps);
+          },
+          DrawInstructions::Line(start, end, width, color) => {
+            window_writer.draw_line(start, end, width, color);
           },
         }
       }