v1.2.1: text measuring support

several malvim features added, font data caching, taskbar title overflow fix, new background

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "ming-wm"
-version = "1.2.0"
+version = "1.2.1"
 repository = "https://github.com/stjet/ming-wm"
 license = "GPL-3.0-or-later"
 edition = "2021"

docs/window-likes/malvim.md

@@ -14,22 +14,28 @@ It is probably best to read a Vim tutorial for the basics. All supportd keystrok
 - `w[rite]`
 - `/<query>`
 
-Tab completion is supported for the `<file>` argument.
+Tab completion is supported for the `<file>` argument. Down arrow will clear the current command, and up arrow will fill in the last ran command.
 
 ### Supported in Normal Mode
 
 - `:`
 - `i`
+- `o`, `O`
 - `A`
 - `r`
 - `dd`
-- `dw`
+- `<number>dd`
+- `dw` (`dw` is not identical to vim's behaviour), `dW`
 - `d$`
 - `G`
 - `gg`
 - `<number>gg`
-- `f<char>`
+- `f<char>`, `F<char>`
-- `F<char>`
+- `<number>f<char>`, `<number>F<char>`
+- `;` (same as `f<char>` but with the char the cursor is on, so not the same as vim)
+- `<num>;`
+- `,` (same as `F<char>` but with the char the cursor is on, so not the same as vim)
+- `<num>,`
 - `x`
 - `h` (or left arrow), `j` (or down arrow), `k` (or up arrow), `l` (or right arrow)
 - `<num>h`, `<num>j` (or down arrow), `<num>k` (or up arrow), `<num>l`

ming-wm-lib/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "ming-wm-lib"
-version = "0.2.1"
+version = "0.2.2"
 repository = "https://github.com/stjet/ming-wm"
 description = "library for building windows for ming-wm in rust"
 readme = "README.md"

ming-wm-lib/src/fonts.rs

@@ -0,0 +1,107 @@
+use std::fs::File;
+use std::io::Read;
+use std::collections::HashMap;
+
+use crate::dirs;
+
+#[derive(Clone)]
+pub struct FontCharInfo {
+  pub c: char,
+  pub data: Vec<Vec<u8>>,
+  pub top_offset: u8,
+  pub height: usize,
+  pub width: usize,
+}
+
+fn get_font_char(dir: &str, c: char) -> Option<FontCharInfo> {
+  let c = if c == '/' { '𐘋' } else if c == '\\' { '𐚆' } else if c == '.' { '𐘅' } else { c };
+  if let Ok(mut file) = File::open(dir.to_string() + "/" + &c.to_string() + ".alpha") {
+    let mut ch: Vec<Vec<u8>> = Vec::new();
+    let mut contents = String::new();
+    file.read_to_string(&mut contents).unwrap();
+    let lines: Vec<&str> = contents.split("\n").collect();
+    for ln in 1..lines.len() {
+      //.unwrap_or(0) is important because zeroes are just empty
+      ch.push(lines[ln].replace(":", ",,,,").replace(";", ",,,").replace(".", ",,").split(",").map(|n| n.parse().unwrap_or(0)).collect());
+    }
+    return Some(FontCharInfo {
+      c,
+      top_offset: lines[0].parse().unwrap(),
+      height: lines.len() - 1,
+      width: ch[0].len(),
+      data: ch,
+     });
+  }
+  None
+}
+
+pub fn get_font_char_from_fonts(fonts: &[String], c: char) -> FontCharInfo {
+  for font in fonts {
+    let p = dirs::exe_dir(Some(&("ming_bmps/".to_string() + &font))).to_string_lossy().to_string();
+    if let Some(font_char) = get_font_char(&p, c) {
+      return font_char;
+    }
+  }
+  let p = dirs::exe_dir(Some(&("ming_bmps/".to_string() + &fonts[0]))).to_string_lossy().to_string();
+  //so a ? char should be in every font. otherwise will just return blank
+  get_font_char(&p, '?').unwrap_or(FontCharInfo {
+    c: '?',
+    data: vec![vec![0]],
+    top_offset: 0,
+    height: 1,
+    width: 1,
+  })
+}
+
+pub struct MeasureInfo {
+  pub height: usize,
+  pub width: usize,
+}
+
+/// Doesn't take into account `horiz_spacing`, which defaults to 1 per character
+pub fn measure_text(fonts: &[String], text: String) -> MeasureInfo {
+  let mut height = 0;
+  let mut width = 0;
+  for c in text.chars() {
+    let i = get_font_char_from_fonts(fonts, c);
+    let c_height = i.top_offset as usize + i.height;
+    if c_height > height {
+      height = c_height;
+    }
+    width += i.width;
+  }
+  MeasureInfo {
+    height,
+    width,
+  }
+}
+
+#[derive(Default)]
+pub struct CachedFontCharGetter {
+  cache: HashMap<char, FontCharInfo>,
+  cache_size: usize, //# of items cached
+  pub max_cache_size: usize,
+}
+
+impl CachedFontCharGetter {
+  pub fn new(max_cache_size: usize) -> Self {
+    let mut s: Self = Default::default();
+    s.max_cache_size = max_cache_size;
+    s
+  }
+
+  pub fn get(&mut self, fonts: &[String], c: char) -> FontCharInfo {
+    if let Some(cached) = self.cache.get(&c) {
+      cached.clone()
+    } else {
+      let got = get_font_char_from_fonts(fonts, c);
+      if self.cache_size == self.max_cache_size {
+        self.cache_size = 0;
+        self.cache = HashMap::new();
+      }
+      self.cache.insert(c, got.clone());
+      self.cache_size += 1;
+      got
+    }
+  }
+}

ming-wm-lib/src/lib.rs

@@ -5,6 +5,7 @@ pub mod serialize;
 pub mod messages;
 pub mod ipc;
 pub mod components;
+pub mod fonts;
 pub mod dirs;
 pub mod utils;
 pub mod logging;

ming-wm-lib/src/utils.rs

@@ -223,3 +223,4 @@ pub fn get_all_files(dir: PathBuf) -> Vec<PathBuf> {
   }
   files
 }
+

src/bin/audio_player.rs

@@ -17,6 +17,7 @@ use ming_wm_lib::window_manager_types::{ DrawInstructions, WindowLike, WindowLik
 use ming_wm_lib::messages::{ WindowMessage, WindowMessageResponse, WindowManagerRequest, ShortcutType };
 use ming_wm_lib::framebuffer_types::Dimensions;
 use ming_wm_lib::themes::ThemeInfo;
+use ming_wm_lib::fonts::measure_text;
 use ming_wm_lib::utils::{ concat_paths, random_u32, get_all_files, path_autocomplete, format_seconds, Substring };
 use ming_wm_lib::dirs::home;
 use ming_wm_lib::ipc::listen;
@@ -150,11 +151,15 @@ impl WindowLike for AudioPlayer {
       let queue = &internal_locked.queue;
       let current = &queue[queue.len() - sink_len];
       let current_name = current.0.file_name().unwrap().to_string_lossy().into_owned();
-      instructions.push(DrawInstructions::Text([self.dimensions[0] / 2 - current_name.len() * MONO_WIDTH as usize / 2, 2], vec!["nimbus-romono".to_string(), "shippori-mincho".to_string()], current_name.clone(), theme_info.text, theme_info.background, Some(0), Some(MONO_WIDTH)));
+      let fonts = ["nimbus-roman".to_string(), "shippori-mincho".to_string()];
+      let cn_width = measure_text(&fonts, current_name.clone()).width;
+      instructions.push(DrawInstructions::Text([self.dimensions[0] / 2 - cn_width / 2, 2], fonts.to_vec(), current_name.clone(), theme_info.text, theme_info.background, Some(0), None));
       if let Some(artist) = &current.2 {
         let artist_string = "by ".to_string() + &artist;
-        instructions.push(DrawInstructions::Text([self.dimensions[0] / 2 - artist_string.len() * MONO_WIDTH as usize / 2, LINE_HEIGHT + 2], vec!["nimbus-romono".to_string()], artist_string, theme_info.text, theme_info.background, Some(0), Some(MONO_WIDTH)));
+        let as_width = measure_text(&fonts, artist_string.clone()).width;
+        instructions.push(DrawInstructions::Text([self.dimensions[0] / 2 - as_width / 2, LINE_HEIGHT + 2], fonts.to_vec(), artist_string, theme_info.text, theme_info.background, Some(0), None));
       }
+      //in this case no chance of mincho so MONO_WIDTH method of calculating width is ok
       let time_string = format!("{}/{}", format_seconds(internal_locked.sink.get_pos().as_secs()), format_seconds(current.1));
       instructions.push(DrawInstructions::Text([self.dimensions[0] / 2 - time_string.len() * MONO_WIDTH as usize / 2, LINE_HEIGHT * 2 + 2], vec!["nimbus-romono".to_string()], time_string, theme_info.text, theme_info.background, Some(0), Some(MONO_WIDTH)));
     } else {

src/bin/malvim.rs

@@ -19,6 +19,8 @@ const LINE_HEIGHT: usize = 18;
 const PADDING: usize = 2;
 const BAND_HEIGHT: usize = 19;
 
+const WORD_END: [char; 8] = ['.', ',', ':', '[', ']', '{', '}', ' '];
+
 struct FileInfo {
   pub name: String,
   pub path: String,
@@ -43,6 +45,12 @@ enum State {
   //
 }
 
+impl State {
+  fn is_numberable(&self) -> bool {
+    *self == State::Maybeg || *self == State::Find || *self == State::BackFind
+  }
+}
+
 #[derive(Default, PartialEq)]
 enum Mode {
   #[default]
@@ -77,6 +85,7 @@ struct Malvim {
   state: State,
   mode: Mode,
   command: Option<String>,
+  prev_command: Option<String>,
   bottom_message: Option<String>,
   maybe_num: Option<usize>,
   files: Vec<FileInfo>,
@@ -178,7 +187,7 @@ impl WindowLike for Malvim {
               }
               let new_length = current_file.content[current_file.line_pos].chars().count();
               current_file.cursor_pos = Malvim::calc_new_cursor_pos(current_file.cursor_pos, new_length);
-            } else if key_press.key == 'w' || key_press.key == '$' {
+            } else if key_press.key == 'w' || key_press.key == 'W' || key_press.key == '$' {
               let line = &current_file.content[current_file.line_pos];
               let line_len = line.chars().count();
               if line_len > 0 && current_file.cursor_pos < line_len {
@@ -186,11 +195,19 @@ impl WindowLike for Malvim {
                 let mut line_chars = line.chars().skip(current_file.cursor_pos).peekable();
                 //deref is Copy
                 let current_char = *line_chars.peek().unwrap();
-                let offset = if key_press.key == 'w' {
+                let offset = if key_press.key == 'W' || key_press.key == 'w' {
-                  line_chars.position(|c| if current_char == ' ' {
+                  line_chars.position(|c| if key_press.key == 'w' {
+                    if WORD_END.contains(&current_char) {
+                      c != current_char
+                    } else {
+                      WORD_END.contains(&c)
+                    }
+                  } else {
+                    if current_char == ' ' {
                       c != ' '
                     } else {
                       c == ' '
+                    }
                   }).unwrap_or(line_len - current_file.cursor_pos)
                 } else {
                   line_chars.count()
@@ -212,11 +229,17 @@ impl WindowLike for Malvim {
             }
             changed = false;
             self.state = State::None;
-          } else if self.state == State::Find || self.state == State::BackFind {
+          } else if self.state == State::Find || self.state == State::BackFind || key_press.key == ';' || key_press.key == ',' {
-            let old_pos = current_file.cursor_pos;
+            let mut old_pos = current_file.cursor_pos;
-            let find_pos = if self.state == State::Find {
+            let find_char = if self.state == State::Find || self.state == State::BackFind {
+              key_press.key
+            } else {
+              current_file.content[current_file.line_pos].chars().nth(old_pos).unwrap()
+            };
+            for _ in 0..self.maybe_num.unwrap_or(1) {
+              let find_pos = if self.state == State::Find || key_press.key == ';' {
                 if old_pos < current_file.content[current_file.line_pos].chars().count() {
-                let found_index = current_file.content[current_file.line_pos].chars().skip(old_pos + 1).position(|c| c == key_press.key);
+                  let found_index = current_file.content[current_file.line_pos].chars().skip(old_pos + 1).position(|c| c == find_char);
                   if let Some(found_index) = found_index {
                     old_pos + found_index + 1
                   } else {
@@ -228,7 +251,7 @@ impl WindowLike for Malvim {
               } else {
                 //how does this work again? no idea
                 if old_pos != 0 {
-                let found_index = current_file.content[current_file.line_pos].chars().rev().skip(current_length - old_pos).position(|c| c == key_press.key);
+                  let found_index = current_file.content[current_file.line_pos].chars().rev().skip(current_length - old_pos).position(|c| c == find_char);
                   if let Some(found_index) = found_index {
                     old_pos - found_index - 1
                   } else {
@@ -239,6 +262,8 @@ impl WindowLike for Malvim {
                 }
               };
               current_file.cursor_pos = find_pos;
+              old_pos = current_file.cursor_pos;
+            }
             changed = false;
             self.state = State::None;
           } else if key_press.key == 'x' {
@@ -394,7 +419,7 @@ impl WindowLike for Malvim {
             changed = false;
           }
           //reset maybe_num if not num
-          if !numbered && self.state != State::Maybeg && self.state != State::MaybeDelete {
+          if !numbered && !self.state.is_numberable() {
             self.maybe_num = None;
           }
         } else if self.mode == Mode::Command {
@@ -402,7 +427,8 @@ impl WindowLike for Malvim {
           let command = self.command.clone().unwrap_or("".to_string());
           if key_press.is_enter() {
             new = self.process_command();
-            self.command = None;
+            self.prev_command = self.command.take();
+            //line above does same as `self.command = None`
             self.mode = Mode::Normal;
           } else if key_press.key == '\t' { //tab
             let mut parts = command.split(" ").skip(1);
@@ -425,6 +451,12 @@ impl WindowLike for Malvim {
             if command.len() > 0 {
               self.command = Some(command.remove_last());
             }
+          } else if key_press.is_arrow() {
+            if key_press.is_up_arrow() {
+              self.command = self.prev_command.clone();
+            } else if key_press.is_down_arrow() {
+              self.command = Some(String::new());
+            }
           } else {
             self.command = Some(command.to_string() + &key_press.key.to_string());
           }

wm/src/essential/taskbar.rs

@@ -6,6 +6,7 @@ use ming_wm_lib::window_manager_types::{ DrawInstructions, WindowLike, WindowLik
 use ming_wm_lib::messages::{ WindowMessage, WindowMessageResponse, WindowManagerRequest, ShortcutType, InfoType, WindowsVec };
 use ming_wm_lib::framebuffer_types::Dimensions;
 use ming_wm_lib::themes::ThemeInfo;
+use ming_wm_lib::fonts::measure_text;
 use ming_wm_lib::components::Component;
 use ming_wm_lib::components::toggle_button::ToggleButton;
 
@@ -78,7 +79,25 @@ impl WindowLike for Taskbar {
         break;
       }
       let info = &self.windows_in_workspace[wi];
-      let name = &info.1;
+      let max_text_width = META_WIDTH - PADDING * 2;
+      //horiz_spacing is by default 1 per char, which measure_text doesn't take into account
+      let to_measure = info.1.clone();
+      let to_measure_len = to_measure.chars().count();
+      let name = if measure_text(&["nimbus-roman".to_string()], to_measure).width + to_measure_len > max_text_width {
+        let mut current = String::new();
+        for c in info.1.chars() {
+          //horiz_spacing is 1 by default
+          let to_measure = current.clone() + &c.to_string() + "...";
+          let to_measure_len = to_measure.chars().count();
+          if measure_text(&["nimbus-roman".to_string()], to_measure).width + to_measure_len > max_text_width {
+            break;
+          }
+          current += &c.to_string();
+        }
+        current + "..."
+      } else {
+        info.1.clone()
+      };
       let mut b = ToggleButton::new(name.to_string() + "-window", [PADDING * 2 + 44 + (META_WIDTH + PADDING) * wi, PADDING], [META_WIDTH, self.dimensions[1] - (PADDING * 2)], name.to_string(), TaskbarMessage::Nothing, TaskbarMessage::Nothing);
       b.inverted = info.0 == self.focused_id;
       instructions.extend(b.draw(theme_info));
@@ -123,5 +142,3 @@ impl Taskbar {
     }
   }
 }
-
-

wm/src/framebuffer.rs

@@ -4,9 +4,7 @@ use std::vec::Vec;
 use bmp_rust::bmp::BMP;
 
 use ming_wm_lib::framebuffer_types::*;
-use crate::fs::get_font_char_from_fonts;
+use ming_wm_lib::fonts::{ CachedFontCharGetter, FontCharInfo };
-
-type FontChar = (char, Vec<Vec<u8>>, u8);
 
 fn color_with_alpha(color: RGBColor, bg_color: RGBColor, alpha: u8) -> RGBColor {
   /*let factor: f32 = alpha as f32 / 255.0;
@@ -47,6 +45,7 @@ pub struct FramebufferInfo {
 //currently doesn't check if writing onto next line accidentally
 pub struct FramebufferWriter {
   info: FramebufferInfo,
+  fc_getter: CachedFontCharGetter,
   buffer: Vec<u8>,
   saved_buffer: Option<Vec<u8>>,
   rotate_buffer: Option<Vec<u8>>,
@@ -57,6 +56,7 @@ impl FramebufferWriter {
   pub fn new(grayscale: bool) -> Self {
     Self {
       info: Default::default(),
+      fc_getter: CachedFontCharGetter::new(128), //an arbitrary high-ish number for max cache size
       buffer: Vec::new(),
       saved_buffer: None,
       rotate_buffer: None,
@@ -128,12 +128,11 @@ impl FramebufferWriter {
     }
   }
 
-  pub fn draw_char(&mut self, top_left: Point, char_info: &FontChar, color: RGBColor, bg_color: RGBColor) {
+  pub fn draw_char(&mut self, top_left: Point, char_info: &FontCharInfo, color: RGBColor, bg_color: RGBColor) {
     let mut start_pos;
-    for row in 0..char_info.1.len() {
+    for row in 0..char_info.height {
-      //char_info.2 is vertical offset
+      start_pos = ((top_left[1] + row + char_info.top_offset as usize) * self.info.stride + top_left[0]) * self.info.bytes_per_pixel;
-      start_pos = ((top_left[1] + row + char_info.2 as usize) * self.info.stride + top_left[0]) * self.info.bytes_per_pixel;
+      for col in &char_info.data[row] {
-      for col in &char_info.1[row] {
         if col > &0 {
           if start_pos + 3 < self.info.byte_len {
             self._draw_pixel(start_pos, color_with_alpha(color, bg_color, *col));
@@ -226,8 +225,8 @@ impl FramebufferWriter {
       if c == ' ' {
         top_left[0] += mono_width.unwrap_or(5) as usize;
       } else {
-        let char_info = get_font_char_from_fonts(&fonts, c);
+        let char_info = self.fc_getter.get(&fonts, c);
-        let char_width = char_info.1[0].len();
+        let char_width = char_info.width;
         let add_after: usize;
         if let Some(mono_width) = mono_width {
           let mono_width = mono_width as usize;

wm/src/fs.rs

@@ -1,38 +1,9 @@
-use std::fs::{ read_dir, File };
+use std::fs::read_dir;
-use std::io::Read;
 use std::collections::HashMap;
 
 use ming_wm_lib::dirs;
 use ming_wm_lib::utils::get_rest_of_split;
 
-fn get_font_char(dir: &str, c: char) -> Option<(char, Vec<Vec<u8>>, u8)> {
-  let c = if c == '/' { '𐘋' } else if c == '\\' { '𐚆' } else if c == '.' { '𐘅' } else { c };
-  if let Ok(mut file) = File::open(dir.to_string() + "/" + &c.to_string() + ".alpha") {
-    let mut ch: Vec<Vec<u8>> = Vec::new();
-    let mut contents = String::new();
-    file.read_to_string(&mut contents).unwrap();
-    let lines: Vec<&str> = contents.split("\n").collect();
-    for ln in 1..lines.len() {
-      //.unwrap_or(0) is important because zeroes are just empty
-      ch.push(lines[ln].replace(":", ",,,,").replace(";", ",,,").replace(".", ",,").split(",").map(|n| n.parse().unwrap_or(0)).collect());
-    }
-    return Some((c, ch, lines[0].parse().unwrap()));
-  }
-  None
-}
-
-pub fn get_font_char_from_fonts(fonts: &[String], c: char) -> (char, Vec<Vec<u8>>, u8) {
-  for font in fonts {
-    let p = dirs::exe_dir(Some(&("ming_bmps/".to_string() + &font))).to_string_lossy().to_string();
-    if let Some(font_char) = get_font_char(&p, c) {
-      return font_char;
-    }
-  }
-  let p = dirs::exe_dir(Some(&("ming_bmps/".to_string() + &fonts[0]))).to_string_lossy().to_string();
-  //so a ? char should be in every font. otherwise will just return blank
-  get_font_char(&p, '?').unwrap_or(('?', vec![vec![0]], 0))
-}
-
 //Category, Vec<Display name, file name>
 pub type ExeWindowInfos = HashMap<String, Vec<(String, String)>>;