refactor: const-ify the core primitives

crates/ecolor/src/hex_color_runtime.rs

@@ -72,7 +72,7 @@ impl Display for HexColor {
 impl HexColor {
     /// Retrieves the inner [`Color32`]
     #[inline]
-    pub fn color(&self) -> Color32 {
+    pub const fn color(&self) -> Color32 {
         match self {
             Self::Hex3(color) | Self::Hex4(color) | Self::Hex6(color) | Self::Hex8(color) => *color,
         }

crates/ecolor/src/hsva.rs

@@ -22,7 +22,7 @@ pub struct Hsva {
 
 impl Hsva {
     #[inline]
-    pub fn new(h: f32, s: f32, v: f32, a: f32) -> Self {
+    pub const fn new(h: f32, s: f32, v: f32, a: f32) -> Self {
         Self { h, s, v, a }
     }
 
@@ -110,7 +110,7 @@ impl Hsva {
     // ------------------------------------------------------------------------
 
     #[inline]
-    pub fn to_opaque(self) -> Self {
+    pub const fn to_opaque(self) -> Self {
         Self { a: 1.0, ..self }
     }
 

crates/ecolor/src/lib.rs

@@ -137,7 +137,7 @@ pub fn gamma_from_linear(linear: f32) -> f32 {
 
 /// Cheap and ugly.
 /// Made for graying out disabled `Ui`s.
-pub fn tint_color_towards(color: Color32, target: Color32) -> Color32 {
+pub const fn tint_color_towards(color: Color32, target: Color32) -> Color32 {
     let [mut r, mut g, mut b, mut a] = color.to_array();
 
     if a == 0 {

crates/ecolor/src/rgba.rs

@@ -119,7 +119,7 @@ impl Rgba {
 
     /// Return an additive version of this color (alpha = 0)
     #[inline]
-    pub fn additive(self) -> Self {
+    pub const fn additive(self) -> Self {
         let [r, g, b, _] = self.0;
         Self([r, g, b, 0.0])
     }
@@ -142,22 +142,22 @@ impl Rgba {
     }
 
     #[inline]
-    pub fn r(&self) -> f32 {
+    pub const fn r(&self) -> f32 {
         self.0[0]
     }
 
     #[inline]
-    pub fn g(&self) -> f32 {
+    pub const fn g(&self) -> f32 {
         self.0[1]
     }
 
     #[inline]
-    pub fn b(&self) -> f32 {
+    pub const fn b(&self) -> f32 {
         self.0[2]
     }
 
     #[inline]
-    pub fn a(&self) -> f32 {
+    pub const fn a(&self) -> f32 {
         self.0[3]
     }
 
@@ -185,13 +185,13 @@ impl Rgba {
 
     /// Premultiplied RGBA
     #[inline]
-    pub fn to_array(&self) -> [f32; 4] {
+    pub const fn to_array(&self) -> [f32; 4] {
         [self.r(), self.g(), self.b(), self.a()]
     }
 
     /// Premultiplied RGBA
     #[inline]
-    pub fn to_tuple(&self) -> (f32, f32, f32, f32) {
+    pub const fn to_tuple(&self) -> (f32, f32, f32, f32) {
         (self.r(), self.g(), self.b(), self.a())
     }
 

crates/eframe/src/epi.rs

@@ -628,12 +628,12 @@ impl Frame {
     ///
     /// Equivalent to `cfg!(target_arch = "wasm32")`
     #[allow(clippy::unused_self)]
-    pub fn is_web(&self) -> bool {
+    pub const fn is_web(&self) -> bool {
         cfg!(target_arch = "wasm32")
     }
 
     /// Information about the integration.
-    pub fn info(&self) -> &IntegrationInfo {
+    pub const fn info(&self) -> &IntegrationInfo {
         &self.info
     }
 
@@ -660,7 +660,7 @@ impl Frame {
     /// To get a [`glow`] context you need to compile with the `glow` feature flag,
     /// and run eframe using [`Renderer::Glow`].
     #[cfg(feature = "glow")]
-    pub fn gl(&self) -> Option<&std::sync::Arc<glow::Context>> {
+    pub const fn gl(&self) -> Option<&std::sync::Arc<glow::Context>> {
         self.gl.as_ref()
     }
 
@@ -679,7 +679,7 @@ impl Frame {
     ///
     /// Can be used to manage GPU resources for custom rendering with WGPU using [`egui::PaintCallback`]s.
     #[cfg(feature = "wgpu")]
-    pub fn wgpu_render_state(&self) -> Option<&egui_wgpu::RenderState> {
+    pub const fn wgpu_render_state(&self) -> Option<&egui_wgpu::RenderState> {
         self.wgpu_render_state.as_ref()
     }
 }

crates/eframe/src/native/epi_integration.rs

@@ -228,7 +228,7 @@ impl EpiIntegration {
     }
 
     /// If `true`, it is time to close the native window.
-    pub fn should_close(&self) -> bool {
+    pub const fn should_close(&self) -> bool {
         self.close
     }
 

crates/eframe/src/stopwatch.rs

@@ -10,7 +10,7 @@ pub struct Stopwatch {
 }
 
 impl Stopwatch {
-    pub fn new() -> Self {
+    pub const fn new() -> Self {
         Self {
             total_time_ns: 0,
             start: None,

crates/eframe/src/web/app_runner.rs

@@ -127,7 +127,7 @@ impl AppRunner {
         Ok(runner)
     }
 
-    pub fn egui_ctx(&self) -> &egui::Context {
+    pub const fn egui_ctx(&self) -> &egui::Context {
         &self.egui_ctx
     }
 
@@ -168,7 +168,7 @@ impl AppRunner {
         self.painter.destroy();
     }
 
-    pub fn has_outstanding_paint_data(&self) -> bool {
+    pub const fn has_outstanding_paint_data(&self) -> bool {
         self.clipped_primitives.is_some()
     }
 

crates/eframe/src/web/web_logger.rs

@@ -12,7 +12,7 @@ impl WebLogger {
 
     /// Create a new [`WebLogger`] with the given filter,
     /// but don't install it.
-    pub fn new(filter: log::LevelFilter) -> Self {
+    pub const fn new(filter: log::LevelFilter) -> Self {
         Self { filter }
     }
 }