cache text buf

src/core/text.rs

@@ -1,9 +1,9 @@
 use cosmic_text::{Attrs, Family, FontSystem, Metrics, Shaping};
 
-use crate::prelude::*;
+use crate::{prelude::*, util::MutDetect};
 
 pub struct Text {
-    pub content: String,
+    pub content: MutDetect<String>,
     pub attrs: TextAttrs,
     /// inner alignment of text region (within where its drawn)
     pub align: Align,
@@ -32,7 +32,7 @@ impl Text {
     pub fn new(content: impl Into<String>) -> Self {
         let attrs = TextAttrs::default();
         Self {
-            content: content.into(),
+            content: content.into().into(),
             buf: TextBuffer::new_empty(Metrics::new(attrs.font_size, attrs.line_height)),
             attrs,
             align: Align::Center,
@@ -49,12 +49,15 @@ impl Text {
             font_system,
             Metrics::new(self.attrs.font_size, self.attrs.line_height),
         );
-        self.buf.set_text(
-            font_system,
-            &self.content,
-            &Attrs::new().family(self.attrs.family),
-            Shaping::Advanced,
-        );
+        if self.content.changed {
+            self.content.changed = false;
+            self.buf.set_text(
+                font_system,
+                &self.content,
+                &Attrs::new().family(self.attrs.family),
+                Shaping::Advanced,
+            );
+        }
     }
 }