sunset theme.xml in favor of globals

wgui/src/drawing.rs

@@ -125,6 +125,25 @@ impl Color {
 	pub fn debug_ansi_block(&self) -> String {
 		format!("{}███{}", self.debug_ansi_format(), ANSI_RESET_CODE)
 	}
+
+	#[must_use]
+	pub fn with_alpha(&self, n: f32) -> Self {
+		Self {
+			r: self.r,
+			g: self.g,
+			b: self.b,
+			a: n,
+		}
+	}
+
+	#[must_use]
+	pub fn to_hex(&self) -> String {
+		let r = (self.r.clamp(0.0, 1.0) * 255.0).round() as u8;
+		let g = (self.g.clamp(0.0, 1.0) * 255.0).round() as u8;
+		let b = (self.b.clamp(0.0, 1.0) * 255.0).round() as u8;
+		let a = (self.a.clamp(0.0, 1.0) * 255.0).round() as u8;
+		format!("#{r:02X}{g:02X}{b:02X}{a:02X}")
+	}
 }
 
 impl Default for Color {

wgui/src/globals.rs

@@ -21,6 +21,8 @@ pub struct Defaults {
 	pub button_color: drawing::Color,
 	pub accent_color: drawing::Color,
 	pub danger_color: drawing::Color,
+	pub faded_color: drawing::Color,
+	pub translucent_alpha: f32,
 }
 
 impl Default for Defaults {
@@ -31,6 +33,8 @@ impl Default for Defaults {
 			button_color: drawing::Color::new(1.0, 1.0, 1.0, 0.05),
 			accent_color: drawing::Color::new(0.0, 0.54, 1.0, 1.0),
 			danger_color: drawing::Color::new(0.8, 0.0, 0.0, 1.0),
+			faded_color: drawing::Color::new(0.4, 0.5, 0.6, 1.0),
+			translucent_alpha: 0.25,
 		}
 	}
 }

wgui/src/parser/mod.rs

@@ -377,6 +377,30 @@ impl ParserContext<'_> {
 			log::warn!("duplicate widget ID \"{id}\" in the same layout file!");
 		}
 	}
+
+	fn populate_theme_variables(&mut self) {
+		let def = self.doc_params.globals.defaults();
+
+		macro_rules! insert_color_vars {
+			($self:expr, $name:literal, $field:expr, $alpha:expr) => {
+				$self.insert_var(concat!("color_", $name), &$field.to_hex());
+				$self.insert_var(
+					concat!("color_", $name, "_translucent"),
+					&$field.with_alpha($alpha).to_hex(),
+				);
+				$self.insert_var(concat!("color_", $name, "_50"), &$field.mult_rgb(0.50).to_hex());
+				$self.insert_var(concat!("color_", $name, "_20"), &$field.mult_rgb(0.20).to_hex());
+				$self.insert_var(concat!("color_", $name, "_10"), &$field.mult_rgb(0.10).to_hex());
+				$self.insert_var(concat!("color_", $name, "_5"), &$field.mult_rgb(0.05).to_hex());
+				$self.insert_var(concat!("color_", $name, "_1"), &$field.mult_rgb(0.01).to_hex());
+			};
+		}
+
+		insert_color_vars!(self, "text", def.text_color, def.translucent_alpha);
+		insert_color_vars!(self, "accent", def.accent_color, def.translucent_alpha);
+		insert_color_vars!(self, "danger", def.danger_color, def.translucent_alpha);
+		insert_color_vars!(self, "faded", def.faded_color, def.translucent_alpha);
+	}
 }
 
 // Parses a color from a HTML hex string
@@ -1030,6 +1054,8 @@ pub fn parse_from_assets(
 ) -> anyhow::Result<ParserState> {
 	let parser_data = ParserData::default();
 	let mut ctx = create_default_context(doc_params, layout, &parser_data);
+	ctx.populate_theme_variables();
+
 	let (file, node_layout) = get_doc_from_asset_path(&ctx, doc_params.path)?;
 	parse_document_root(&file, &mut ctx, parent_id, node_layout)?;
 

wgui/src/parser/style.rs

@@ -6,8 +6,8 @@ use taffy::{
 use crate::{
 	drawing,
 	parser::{
-		is_percent, parse_color_hex, parse_f32, parse_percent, parse_size_unit, parse_val, print_invalid_attrib,
-		print_invalid_value, AttribPair,
+		AttribPair, is_percent, parse_color_hex, parse_f32, parse_percent, parse_size_unit, parse_val,
+		print_invalid_attrib, print_invalid_value,
 	},
 	renderer_vk::text::{FontWeight, HorizontalAlign, TextStyle},
 	widget::util::WLength,