fix: replace base64 images with nested svg to fix rasterization blurriness

Cargo.lock

@@ -23,12 +23,6 @@ version = "1.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f2032f911046de80f0a198e0901378627c33f59ea0ac00e363d481118bd70a53"
 
-[[package]]
-name = "base64"
-version = "0.23.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b25655df2c3cdd83c5e5b293b88acd880332b2ddadd7c30ac43144fdc0033da9"
-
 [[package]]
 name = "bitflags"
 version = "2.13.1"
@@ -408,7 +402,6 @@ name = "icon-color-tool"
 version = "0.1.0"
 dependencies = [
  "anyhow",
- "base64",
  "gtk4",
  "regex",
  "serde",

Cargo.toml

@@ -10,4 +10,3 @@ regex = "1"
 serde = { version = "1", features = ["derive"] }
 toml = "0.8"
 walkdir = "2"
-base64 = "0.23.0"

src/composite_icon.rs

@@ -25,15 +25,27 @@ impl CompositeIcon {
 
     pub fn render(&self) -> String {
         if let Some(emblem) = &self.emblem {
-            use base64::prelude::*;
-            let bg_b64 = BASE64_STANDARD.encode(&self.bg.content);
-            let emblem_b64 = BASE64_STANDARD.encode(&emblem.content);
+            fn strip_xml(svg: &str) -> &str {
+                if let Some(idx) = svg.find("<svg") {
+                    &svg[idx..]
+                } else {
+                    svg
+                }
+            }
+            
+            let bg_svg = strip_xml(&self.bg.content);
+            let emblem_svg = strip_xml(&emblem.content);
+            
             format!(
                 r#"<svg viewBox="0 0 64 64" xmlns="http://www.w3.org/2000/svg">
-  <image x="0" y="0" width="64" height="64" href="data:image/svg+xml;base64,{}" />
-  <image x="{}" y="{}" width="{}" height="{}" href="data:image/svg+xml;base64,{}" />
+  <svg x="0" y="0" width="64" height="64">
+{}
+  </svg>
+  <svg x="{}" y="{}" width="{}" height="{}">
+{}
+  </svg>
 </svg>"#,
-                bg_b64, self.emblem_x, self.emblem_y, self.emblem_size, self.emblem_size, emblem_b64
+                bg_svg, self.emblem_x, self.emblem_y, self.emblem_size, self.emblem_size, emblem_svg
             )
         } else {
             self.bg.content.clone()