[Feat] support line number & remove unused module (#91)

generator/src/code.rs

@@ -2,6 +2,7 @@ use cached::proc_macro::cached;
 use regex::Regex;
 
 const MIN_WIDTH: f32 = 100.;
+pub const CHAR_WIDTH: f32 = 9.05;
 
 fn min_width(width: f32) -> f32 {
     if width < MIN_WIDTH {

generator/src/components.rs

@@ -1,7 +1,9 @@
 pub mod background;
 pub mod breadcrumbs;
+pub mod code_block;
 pub mod container;
 pub mod editor;
 pub mod interface;
+pub mod line_number;
 pub mod rect;
 pub mod watermark;

generator/src/components/code_block.rs

@@ -0,0 +1,29 @@
+use crate::edges::margin::Margin;
+
+use super::interface::{
+    component::Component,
+    style::{RawComponentStyle, Style},
+};
+
+pub struct CodeBlock {
+    children: Vec<Box<dyn Component>>,
+}
+
+impl Component for CodeBlock {
+    fn children(&self) -> &Vec<Box<dyn Component>> {
+        &self.children
+    }
+
+    fn style(&self) -> RawComponentStyle {
+        Style::default().margin(Margin {
+            top: 10.,
+            ..Margin::default()
+        })
+    }
+}
+
+impl CodeBlock {
+    pub fn from_children(children: Vec<Box<dyn Component>>) -> CodeBlock {
+        CodeBlock { children }
+    }
+}

generator/src/components/editor/code.rs

@@ -1,11 +1,10 @@
 use crate::{
-    code::{calc_wh, prepare_code},
+    code::{calc_wh, prepare_code, CHAR_WIDTH},
     components::interface::{
         component::{Component, ComponentContext, RenderParams},
         render_error,
         style::{ComponentStyle, RawComponentStyle, Size, Style},
     },
-    edges::margin::Margin,
     highlight::Highlight,
     text::FontRenderer,
 };
@@ -23,14 +22,9 @@ impl Component for Code {
     }
 
     fn style(&self) -> RawComponentStyle {
-        let (w, h) = calc_wh(&self.value, 9.05, self.line_height);
+        let (w, h) = calc_wh(&self.value, CHAR_WIDTH, self.line_height);
 
-        Style::default()
-            .size(Size::Num(w), Size::Num(h))
-            .margin(Margin {
-                top: 10.,
-                ..Margin::default()
-            })
+        Style::default().size(Size::Num(w), Size::Num(h))
     }
 
     fn draw_self(

generator/src/components/line_number.rs

@@ -0,0 +1,99 @@
+use super::interface::{
+    component::{Component, ComponentContext, RenderParams},
+    render_error,
+    style::{ComponentStyle, RawComponentStyle, Size, Style},
+};
+use crate::{code::CHAR_WIDTH, edges::margin::Margin, text::FontRenderer};
+use cosmic_text::{Attrs, Color, Family};
+
+const FONT_SIZE: f32 = 14.;
+
+#[derive(Default)]
+pub struct LineNumber {
+    children: Vec<Box<dyn Component>>,
+    line_height: f32,
+    render_condition: bool,
+    line_number_content: Vec<String>,
+    number_of_digit: usize,
+}
+
+impl Component for LineNumber {
+    fn render_condition(&self) -> bool {
+        return self.render_condition;
+    }
+
+    fn children(&self) -> &Vec<Box<dyn Component>> {
+        &self.children
+    }
+
+    fn style(&self) -> RawComponentStyle {
+        Style::default()
+            .size(
+                Size::Num(CHAR_WIDTH * self.number_of_digit as f32),
+                Size::Num(self.line_number_content.len() as f32 * self.line_height),
+            )
+            .margin(Margin {
+                right: 10.,
+                ..Margin::default()
+            })
+    }
+
+    fn draw_self(
+        &self,
+        pixmap: &mut tiny_skia::Pixmap,
+        context: &ComponentContext,
+        render_params: &RenderParams,
+        style: &ComponentStyle,
+    ) -> render_error::Result<()> {
+        FontRenderer::new(
+            FONT_SIZE,
+            self.line_height,
+            context.scale_factor,
+            &context.take_snapshot_params.fonts_folder,
+        )
+        .draw_text(
+            render_params.x,
+            render_params.y,
+            style.width,
+            style.height,
+            vec![(
+                &self.line_number_content.join("\n"),
+                Attrs::new()
+                    .color(Color::rgb(73, 81, 98))
+                    .family(Family::Name(&context.take_snapshot_params.code_font_family)),
+            )],
+            pixmap,
+        );
+
+        Ok(())
+    }
+}
+
+impl LineNumber {
+    pub fn new(content: &str, start_line_number: Option<usize>, line_height: f32) -> LineNumber {
+        match start_line_number {
+            None => LineNumber::default(),
+            Some(start_line_number) => {
+                let lines = content.split("\n").collect::<Vec<&str>>();
+                let max_line_number = lines.len() + start_line_number;
+                let number_of_digit = (max_line_number - 1).to_string().len();
+
+                LineNumber {
+                    line_number_content: (start_line_number..max_line_number)
+                        .map(|line_number| {
+                            format!(
+                                "{:>width$}",
+                                line_number.to_string(),
+                                width = number_of_digit
+                            )
+                        })
+                        .collect::<Vec<String>>(),
+                    number_of_digit,
+                    children: vec![],
+                    render_condition: true,
+                    line_height,
+                }
+            }
+        }
+    }
+}

generator/src/config.rs

@@ -26,6 +26,7 @@ pub struct TakeSnapshotParams {
     pub file_path: String,
     pub breadcrumbs_separator: String,
     pub has_breadcrumbs: bool,
+    pub start_line_number: Option<usize>,
 }
 
 impl FromObject for TakeSnapshotParams {

generator/src/snapshot.rs

@@ -4,11 +4,13 @@ use tiny_skia::Pixmap;
 
 use crate::components::background::Background;
 use crate::components::breadcrumbs::Breadcrumbs;
+use crate::components::code_block::CodeBlock;
 use crate::components::container::Container;
 use crate::components::editor::code::Code;
 use crate::components::editor::mac_title_bar::MacTitleBar;
 use crate::components::interface::component::ComponentContext;
 use crate::components::interface::render_error;
+use crate::components::line_number::LineNumber;
 use crate::components::rect::Rect;
 use crate::components::watermark::Watermark;
 use crate::config::TakeSnapshotParams;
@@ -33,7 +35,10 @@ pub fn take_snapshot(params: TakeSnapshotParams) -> render_error::Result<Pixmap>
                     params.breadcrumbs_separator,
                     params.has_breadcrumbs,
                 )),
-                Box::new(Code::new(params.code, 20., 15.)),
+                Box::new(CodeBlock::from_children(vec![
+                    Box::new(LineNumber::new(&params.code, params.start_line_number, 20.)),
+                    Box::new(Code::new(params.code, 20., 15.)),
+                ])),
             ],
         )),
         Box::new(Watermark::new(params.watermark)),

lua/codesnap/config.lua

@@ -27,6 +27,7 @@ end
 
 function config_module.get_config(extension)
   local code = visual_utils.get_selected_text()
+  local start_line_number = visual_utils.get_start_line_number()
 
   if string_utils.is_str_empty(code) then
     error("No code is selected", 0)
@@ -41,6 +42,7 @@ function config_module.get_config(extension)
     themes_folder = assets_folder .. "/themes",
     theme = "base16-onedark",
     file_path = static.config.has_breadcrumbs and path_utils.get_relative_path() or "",
+    start_line_number = static.config.has_line_number and start_line_number or nil,
   }, static.config)
 
   config.save_path = parse_save_path(config.save_path)

lua/codesnap/init.lua

@@ -36,6 +36,7 @@ function main.save_snapshot(extension)
 
   require("generator").save_snapshot(config)
   vim.cmd("delmarks <>")
+  ---@diagnostic disable-next-line: need-check-nil
   vim.notify("Save snapshot in " .. config.save_path .. " successfully")
 end
 

lua/codesnap/static.lua

@@ -10,6 +10,7 @@ return {
     bg_theme = "default",
     breadcrumbs_separator = "/",
     has_breadcrumbs = false,
+    has_line_number = false,
   },
   cwd = path_utils.back(path_utils.back(debug.getinfo(1, "S").source:sub(2):match("(.*[/\\])"))),
   preview_switch = true,

lua/codesnap/utils/visual.lua

@@ -2,7 +2,6 @@ local visual_utils = {}
 
 -- Get all the lines from "from" to "to" and return them as a single string
 -- If "from" and "to" are the same, return the line at "from"
-
 local function get_whole_lines(from, to)
   local lines = {}
   if from == to then
@@ -15,6 +14,10 @@ local function get_whole_lines(from, to)
   return table.concat(lines, "\n")
 end
 
+function visual_utils.get_start_line_number()
+  return vim.fn.line("'<")
+end
+
 function visual_utils.get_selected_text()
   local selected_text = vim.fn.getline("'<", "'>")