feat: add egui 0.34 support

[Lynnesbian]

This PR is very similar to #96. I tested it by modifying the todo example, but didn't commit those changes for the same reason @philpax didn't last time.

diff --git i/examples/todo/Cargo.toml w/examples/todo/Cargo.toml
index d760563..aa657d8 100644
--- i/examples/todo/Cargo.toml
+++ w/examples/todo/Cargo.toml
@@ -6,5 +6,5 @@ license = "MIT"
 publish = false
 
 [dependencies]
-eframe = "0.32"
-catppuccin-egui = { version = "5.6", default-features = false, features = ["egui32"] }
+eframe = "0.34"
+catppuccin-egui = { path = "../..", default-features = false, features = ["egui34"] }
diff --git i/examples/todo/src/main.rs w/examples/todo/src/main.rs
index 741dd7b..b2da31d 100644
--- i/examples/todo/src/main.rs
+++ w/examples/todo/src/main.rs
@@ -4,6 +4,7 @@
 
 use catppuccin_egui::{FRAPPE, LATTE, MACCHIATO, MOCHA};
 use eframe::egui;
+use eframe::egui::Ui;
 
 fn main() {
     let native_options = eframe::NativeOptions::default();
@@ -92,7 +93,7 @@ impl Default for App {
 }
 
 impl eframe::App for App {
-    fn update(&mut self, ctx: &egui::Context, _frame: &mut eframe::Frame) {
+    fn ui(&mut self, ctx: &mut Ui, _frame: &mut eframe::Frame) {
         catppuccin_egui::set_theme(
             ctx,
             match self.theme {

---

I've also updated lib.rs to avoid a deprecation warning on Context::style:

diff --git c/src/lib.rs w/src/lib.rs
index be38f38..3fc7816 100644
--- c/src/lib.rs
+++ w/src/lib.rs
@@ -69,7 +69,12 @@ pub use themes::*;
 
 /// Apply the given theme to a [`Context`](egui::Context).
 pub fn set_theme(ctx: &egui::Context, theme: Theme) {
+    #[cfg(feature = "egui34")]
+    let old = ctx.global_style().visuals.clone();
+
+    #[cfg(not(feature = "egui34"))]
     let old = ctx.style().visuals.clone();
+
     ctx.set_visuals(theme.visuals(old));
 }

[dxps]

I assume that some of us are still waiting for this egui 0.34 support to be in place.

@Lynnesbian Thanks for the contribution! 🙏

---

PS (updated initial message):

ℹ️ To others like me: to have this compile (even independently, that is using cargo build --no-default-features --features egui34) you need to cargo install catppuccin-whiskers.

[Erik1000]

I assume that some of us are still waiting for this egui 0.34 support to be in place.

Trying to get @Lynnesbian's work in my project fails to compile. Even so when trying cargo build --no-default-features --features egui34 on her work. Am I missing something, please?
Compile errors (click to expand)

Thanks.

I hit the same. The reason is that the src/themes.rs.tera file exists in the repo which leads build.rs wanting to regenerate src/themes.rs with whiskers which is not available.

I "fixed" (well it isnt a bug) it on a fork of the branch Erik1000@ffaa826

[dxps]

@Erik1000 I had to cargo install catppuccin-whiskers before compiling it.
All good, for now. Lemme check my project now ...

[Erik1000]

@Erik1000 Do I had to cargo install catppuccin-whiskers before compiling it.

you have to if the file exists. my branch works without whiskers

[philpax]

Yep, the build script runs unconditionally, which is problematic for people building it themselves from source. I proposed removing the build script in this issue: #97

[mcthesw]

Upgrading egui currently seems to require waiting for this crate to support the new version too, even though the theme logic is relatively small.

In my own app, I ended up embedding the Catppuccin theme implementation directly into the application code.

I wonder if there is a better way to make this less tightly coupled to egui versions.