From c247bbdad2f9842715fe5cf0a135275540624270 Mon Sep 17 00:00:00 2001
From: Jeremy Soller <jackpot51@gmail.com>
Date: Thu, 27 Oct 2022 20:31:05 -0600
Subject: [PATCH] Move cache to text box state

---
 examples/editor-libcosmic/src/main.rs     |  8 +-------
 examples/editor-libcosmic/src/text_box.rs | 12 ++++++------
 2 files changed, 7 insertions(+), 13 deletions(-)

diff --git a/examples/editor-libcosmic/src/main.rs b/examples/editor-libcosmic/src/main.rs
index 1c395c9..83b0845 100644
--- a/examples/editor-libcosmic/src/main.rs
+++ b/examples/editor-libcosmic/src/main.rs
@@ -14,7 +14,6 @@ use cosmic::{
             horizontal_space,
             pick_list,
             row,
-            text,
         },
     },
     settings,
@@ -27,7 +26,6 @@ use cosmic_text::{
     Attrs,
     AttrsList,
     FontSystem,
-    SwashCache,
     TextBuffer,
     TextMetrics,
 };
@@ -70,7 +68,6 @@ pub struct Window {
     path_opt: Option<PathBuf>,
     attrs: Attrs<'static>,
     buffer: Mutex<TextBuffer<'static>>,
-    cache: Mutex<SwashCache<'static>>,
 }
 
 #[allow(dead_code)]
@@ -119,14 +116,11 @@ impl Application for Window {
             FONT_SIZES[1 /* Body */],
         );
 
-        let cache = SwashCache::new(&FONT_SYSTEM);
-
         let mut window = Window {
             theme: Theme::Dark,
             path_opt: None,
             attrs,
             buffer: Mutex::new(buffer),
-            cache: Mutex::new(cache),
         };
         if let Some(arg) = env::args().nth(1) {
             window.open(PathBuf::from(arg));
@@ -262,7 +256,7 @@ impl Application for Window {
             .align_items(Alignment::Center)
             .spacing(8)
             ,
-            text_box(&self.buffer, &self.cache)
+            text_box(&self.buffer)
         ]
         .spacing(8)
         .padding(16)
diff --git a/examples/editor-libcosmic/src/text_box.rs b/examples/editor-libcosmic/src/text_box.rs
index 86062a8..944a515 100644
--- a/examples/editor-libcosmic/src/text_box.rs
+++ b/examples/editor-libcosmic/src/text_box.rs
@@ -48,20 +48,18 @@ impl StyleSheet for Theme {
 
 pub struct TextBox<'a> {
     buffer: &'a Mutex<TextBuffer<'static>>,
-    cache: &'a Mutex<SwashCache<'static>>,
 }
 
 impl<'a> TextBox<'a> {
-    pub fn new(buffer: &'a Mutex<TextBuffer<'static>>, cache: &'a Mutex<SwashCache<'static>>) -> Self {
+    pub fn new(buffer: &'a Mutex<TextBuffer<'static>>) -> Self {
         Self {
             buffer,
-            cache,
         }
     }
 }
 
-pub fn text_box<'a>(buffer: &'a Mutex<TextBuffer<'static>>, cache: &'a Mutex<SwashCache<'static>>) -> TextBox<'a> {
-    TextBox::new(buffer, cache)
+pub fn text_box<'a>(buffer: &'a Mutex<TextBuffer<'static>>) -> TextBox<'a> {
+    TextBox::new(buffer)
 }
 
 impl<'a, Message, Renderer> Widget<Message, Renderer> for TextBox<'a>
@@ -164,7 +162,7 @@ where
 
             let mut pixels = vec![0; layout_w as usize * layout_h as usize * 4];
 
-            buffer.draw(&mut self.cache.lock().unwrap(), text_color, |start_x, start_y, w, h, color| {
+            buffer.draw(&mut state.cache.lock().unwrap(), text_color, |start_x, start_y, w, h, color| {
                 let alpha = (color.0 >> 24) & 0xFF;
                 if alpha == 0 {
                     // Do not draw if alpha is zero
@@ -343,6 +341,7 @@ where
 
 pub struct State {
     is_dragging: bool,
+    cache: Mutex<SwashCache<'static>>,
     pixels_opt: Mutex<Option<(u32, u32, Vec<u8>)>>,
 }
 
@@ -351,6 +350,7 @@ impl State {
     pub fn new() -> State {
         State {
             is_dragging: false,
+            cache: Mutex::new(SwashCache::new(&crate::FONT_SYSTEM)),
             pixels_opt: Mutex::new(None),
         }
     }