From 64a993777683d5863b558aeb319d62ecb440b8b8 Mon Sep 17 00:00:00 2001
From: Chris Cochrun <chris@cochrun.xyz>
Date: Tue, 9 Sep 2025 09:26:28 -0500
Subject: [PATCH] adding hasing the string as filename for better caching

---
 Cargo.lock         | 10 ++++++++++
 Cargo.toml         |  1 +
 src/ui/text_svg.rs | 43 +++++++++++++++++++++++--------------------
 3 files changed, 34 insertions(+), 20 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 106d5e9..d50f6aa 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3858,6 +3858,7 @@ dependencies = [
  "libcosmic",
  "miette",
  "pretty_assertions",
+ "rapidhash",
  "rayon",
  "resvg 0.45.1",
  "rodio",
@@ -5342,6 +5343,15 @@ version = "1.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f93e7e49bb0bf967717f7bd674458b3d6b0c5f48ec7e3038166026a69fc22223"
 
+[[package]]
+name = "rapidhash"
+version = "4.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9d126f24bc587b080d7823a831d0fe832090a606fd3fd244ecbe23c561104ab8"
+dependencies = [
+ "rustversion",
+]
+
 [[package]]
 name = "rav1e"
 version = "0.7.1"
diff --git a/Cargo.toml b/Cargo.toml
index b9bc246..8ab9d45 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -34,6 +34,7 @@ colors-transform = "0.2.11"
 rayon = "1.11.0"
 resvg = "0.45.1"
 image = "0.25.8"
+rapidhash = "4.0.0"
 # femtovg = { version = "0.16.0", features = ["wgpu"] }
 # wgpu = "26.0.1"
 # mupdf = "0.5.0"
diff --git a/src/ui/text_svg.rs b/src/ui/text_svg.rs
index ff15aa5..9c06e2c 100644
--- a/src/ui/text_svg.rs
+++ b/src/ui/text_svg.rs
@@ -15,6 +15,7 @@ use cosmic::{
     prelude::*,
     widget::{container, image::Handle, Image},
 };
+use rapidhash::v3::rapidhash_v3;
 use resvg::{
     tiny_skia::{self, Pixmap},
     usvg::{fontdb, Tree},
@@ -244,20 +245,10 @@ impl TextSvg {
     pub fn build(mut self) -> Self {
         debug!("starting...");
 
-        // let mut path = dirs::data_local_dir().unwrap();
-        // path.push(PathBuf::from("lumina"));
-        // path.push(PathBuf::from("temp"));
-        // let file_title =
-        //     &self.text.lines().next().unwrap().trim_end();
-        // path.push(PathBuf::from(file_title));
-        // path.set_extension("png");
+        let mut path = dirs::data_local_dir().unwrap();
+        path.push(PathBuf::from("lumina"));
+        path.push(PathBuf::from("temp"));
 
-        // if path.exists() {
-        //     debug!("cached");
-        //     let handle = Handle::from_path(path);
-        //     self.handle = Some(handle);
-        //     return self;
-        // }
         let shadow = if let Some(shadow) = &self.shadow {
             format!("<filter id=\"shadow\"><feDropShadow dx=\"{}\" dy=\"{}\" stdDeviation=\"{}\" flood-color=\"{}\"/></filter>",
                 shadow.offset_x,
@@ -307,6 +298,18 @@ impl TextSvg {
                                         self.font.name,
                                         font_size,
                                         self.fill, stroke, text);
+
+        let hashed_title = rapidhash_v3(final_svg.as_bytes());
+        path.push(PathBuf::from(hashed_title.to_string()));
+        path.set_extension("png");
+
+        if path.exists() {
+            debug!("cached");
+            let handle = Handle::from_path(path);
+            self.handle = Some(handle);
+            return self;
+        }
+
         debug!("text string built...");
         let resvg_tree = Tree::from_data(
             &final_svg.as_bytes(),
@@ -322,15 +325,15 @@ impl TextSvg {
             Pixmap::new(size.width as u32, size.height as u32)
                 .expect("opops");
         resvg::render(&resvg_tree, transform, &mut pixmap.as_mut());
-        // let _ = pixmap.save_png(&path);
+        let _ = pixmap.save_png(&path);
 
         debug!("rendered");
-        // let handle = Handle::from_path(path);
-        let handle = Handle::from_rgba(
-            size.width as u32,
-            size.height as u32,
-            pixmap.take(),
-        );
+        let handle = Handle::from_path(path);
+        // let handle = Handle::from_rgba(
+        //     size.width as u32,
+        //     size.height as u32,
+        //     pixmap.take(),
+        // );
         self.handle = Some(handle);
         debug!("stored");
         self