[Perf] cache the function that used to calculate width and height of (#…

…90)

dynamic text

generator/Cargo.toml

@@ -13,6 +13,7 @@ arboard = {features = ["wayland-data-control"], version = "3.3.2"}
 thiserror = "1.0.58"
 regex = "1.10.3"
 two-face = "0.3.0"
+cached = "0.49.3"
 
 [lib]
 crate-type = ["cdylib"]

generator/src/code.rs

@@ -1,3 +1,4 @@
+use cached::proc_macro::cached;
 use regex::Regex;
 
 const MIN_WIDTH: f32 = 100.;
@@ -12,6 +13,7 @@ fn min_width(width: f32) -> f32 {
 
 // Because the code block is input by users, we need to calculate the width and height
 // to make sure render the width and height of the "editor" shape correctly
+#[cached(key = "String", convert = r#"{ format!("{}", text) }"#)]
 pub fn calc_wh(text: &str, char_wdith: f32, line_height: f32) -> (f32, f32) {
     let trimmed_text = prepare_code(text);
     let lines = trimmed_text.lines();
@@ -36,7 +38,7 @@ fn replace_tab_to_space(text: &str) -> String {
     str::replace(text, "\t", &spaces)
 }
 
-// Find min indention of the line, and remove the same indention from subsequent lines
+// Find min indention of code lines, and remove the same indention from subsequent lines
 fn trim_space(text: &str) -> String {
     let lines = text.split("\n").collect::<Vec<&str>>();
     let regex = Regex::new(r"(?:^|\n)(\s*)").unwrap();

generator/src/components/interface/component.rs

@@ -1,13 +1,10 @@
-use std::sync::Arc;
-
-use tiny_skia::Pixmap;
-
-use crate::{config::TakeSnapshotParams, edges::edge::Edge};
-
 use super::{
     render_error,
     style::{ComponentAlign, ComponentStyle, RawComponentStyle, Size, Style},
 };
+use crate::{config::TakeSnapshotParams, edges::edge::Edge};
+use std::sync::Arc;
+use tiny_skia::Pixmap;
 
 pub struct ComponentContext {
     pub scale_factor: f32,
@@ -152,6 +149,8 @@ pub trait Component {
         Ok(render_params.clone())
     }
 
+    // Dynamic calculate width and height of children, if the children is empty, get_dynamic_wh
+    // will return (0., 0.)
     fn get_dynamic_wh(&self) -> (f32, f32) {
         let children = self.children();
         let calc_children_wh = |cb: fn((f32, f32), &Box<dyn Component>) -> (f32, f32)| {
@@ -160,11 +159,13 @@ pub trait Component {
         let style = self.style();
 
         match style.align {
+            // If align is row, width is sum of children width, height is max of children height
             ComponentAlign::Row => calc_children_wh(|(w, h), child| {
                 let style = child.parsed_style();
 
                 (w + style.width, h.max(style.height))
             }),
+            // If align is column, width is max of children width, height is sum of children height
             ComponentAlign::Column => calc_children_wh(|(w, h), child| {
                 let style = child.parsed_style();