add WguiFontSystem, remove FONT_SYSTEM singleton, custom fonts, add Light font weight

there are a few gzip-compressed ttf as for now, looks like variable fonts aren't parsed properly by cosmic_text. Not sure why. Also, we probably need to have a fallback for CJK characters in the future, or just fallback to the built-in ones in the OS.

Cargo.lock

@@ -1852,9 +1852,9 @@ checksum = "b7ac824320a75a52197e8f2d787f6a38b6718bb6897a35142d749af3c0e8f4fe"
 
 [[package]]
 name = "flate2"
-version = "1.1.2"
+version = "1.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4a3d7db9596fecd151c5f638c0ee5d5bd487b6e0ea232e5dc96d5250f6f94b1d"
+checksum = "bfe33edd8e85a12a67454e37f8c75e730830d83e313556ab9ebf9ee7fbeb3bfb"
 dependencies = [
  "crc32fast",
  "miniz_oxide",
@@ -6278,6 +6278,7 @@ dependencies = [
  "anyhow",
  "cosmic-text",
  "etagere",
+ "flate2",
  "glam",
  "image",
  "log",

dash-frontend/assets/gui/dashboard.xml

@@ -100,6 +100,8 @@
         <rectangle
           width="100%"
           height="48"
+          min_height="48"
+          max_height="48"
           box_sizing="border_box"
           round="8"
           flex_direction="row"
@@ -130,7 +132,7 @@
 
           <!-- Right bottom side -->
           <div margin_right="16">
-            <label id="label_time" size="16" />
+            <label id="label_time" size="16" weight="light" />
           </div>
         </rectangle>
       </div>

dash-frontend/src/frontend.rs

@@ -3,9 +3,9 @@ use std::{cell::RefCell, collections::VecDeque, rc::Rc};
 use chrono::Timelike;
 use glam::Vec2;
 use wgui::{
-	assets::AssetPath,
+	assets::{AssetPath, AssetProvider},
 	components::button::ComponentButton,
-	event::{CallbackDataCommon, EventAlterables},
+	font_config::WguiFontConfig,
 	globals::WguiGlobals,
 	i18n::Translation,
 	layout::{LayoutParams, RcLayout, WidgetID},
@@ -54,7 +54,22 @@ pub enum FrontendTask {
 
 impl Frontend {
 	pub fn new(params: InitParams) -> anyhow::Result<(RcFrontend, RcLayout)> {
-		let globals = WguiGlobals::new(Box::new(assets::Asset {}), wgui::globals::Defaults::default())?;
+		let mut assets = Box::new(assets::Asset {});
+
+		let font_binary_bold = assets.load_from_path_gzip("Quicksand-Bold.ttf.gz")?;
+		let font_binary_regular = assets.load_from_path_gzip("Quicksand-Regular.ttf.gz")?;
+		let font_binary_light = assets.load_from_path_gzip("Quicksand-Light.ttf.gz")?;
+
+		let globals = WguiGlobals::new(
+			assets,
+			wgui::globals::Defaults::default(),
+			&WguiFontConfig {
+				binaries: vec![&font_binary_regular, &font_binary_bold, &font_binary_light],
+				family_name_sans_serif: "Quicksand",
+				family_name_serif: "Quicksand",
+				family_name_monospace: "",
+			},
+		)?;
 
 		let (layout, state) = wgui::parser::new_layout_from_assets(
 			&ParseDocumentParams {

dash-frontend/src/tab/home.rs

@@ -1,7 +1,9 @@
 use wgui::{
 	assets::AssetPath,
 	components::button::ComponentButton,
+	event::CallbackDataCommon,
 	i18n::Translation,
+	layout::Widget,
 	parser::{Fetchable, ParseDocumentParams, ParserState},
 	widget::label::WidgetLabel,
 };
@@ -23,7 +25,7 @@ impl Tab for TabHome {
 	}
 }
 
-fn configure_label_hello(label_hello: &mut WidgetLabel, i18n: &mut wgui::i18n::I18n, settings: &settings::Settings) {
+fn configure_label_hello(common: &mut CallbackDataCommon, label_hello: Widget, settings: &settings::Settings) {
 	let mut username = various::get_username();
 	// first character as uppercase
 	if let Some(first) = username.chars().next() {
@@ -32,12 +34,13 @@ fn configure_label_hello(label_hello: &mut WidgetLabel, i18n: &mut wgui::i18n::I
 	}
 
 	let translated = if !settings.home_screen.hide_username {
-		i18n.translate_and_replace("HELLO_USER", ("{USER}", &username))
+		common.i18n().translate_and_replace("HELLO_USER", ("{USER}", &username))
 	} else {
-		i18n.translate("HELLO").to_string()
+		common.i18n().translate("HELLO").to_string()
 	};
 
-	label_hello.set_text_simple(i18n, Translation::from_raw_text(&translated));
+	let mut label_hello = label_hello.get_as_mut::<WidgetLabel>().unwrap();
+	label_hello.set_text(common, Translation::from_raw_text(&translated));
 }
 
 impl TabHome {
@@ -52,8 +55,9 @@ impl TabHome {
 			params.parent_id,
 		)?;
 
-		let mut label_hello = state.fetch_widget_as::<WidgetLabel>(&params.layout.state, "label_hello")?;
-		configure_label_hello(&mut label_hello, &mut params.globals.i18n(), params.settings);
+		let mut c = params.layout.start_common();
+		let widget_label = state.fetch_widget(&c.layout.state, "label_hello")?.widget;
+		configure_label_hello(&mut c.common(), widget_label, params.settings);
 
 		let btn_apps = state.fetch_component_as::<ComponentButton>("btn_apps")?;
 		let btn_games = state.fetch_component_as::<ComponentButton>("btn_games")?;

dash-frontend/src/tab/mod.rs

@@ -2,7 +2,6 @@ use std::rc::Rc;
 
 use wgui::{
 	components::button::ComponentButton,
-	event::CallbackDataCommon,
 	globals::WguiGlobals,
 	layout::{Layout, WidgetID},
 };

uidev/src/main.rs

@@ -1,26 +1,26 @@
-use glam::{vec2, Vec2};
+use glam::{Vec2, vec2};
 use std::sync::Arc;
-use testbed::{testbed_any::TestbedAny, Testbed};
+use testbed::{Testbed, testbed_any::TestbedAny};
 use timestep::Timestep;
+use tracing_subscriber::EnvFilter;
 use tracing_subscriber::filter::LevelFilter;
 use tracing_subscriber::layer::SubscriberExt;
 use tracing_subscriber::util::SubscriberInitExt;
-use tracing_subscriber::EnvFilter;
 use vulkan::init_window;
 use vulkano::{
+	Validated, VulkanError,
 	command_buffer::CommandBufferUsage,
 	format::Format,
-	image::{view::ImageView, ImageUsage},
+	image::{ImageUsage, view::ImageView},
 	swapchain::{
-		acquire_next_image, CompositeAlpha, PresentMode, Surface, SurfaceInfo, Swapchain,
-		SwapchainCreateInfo, SwapchainPresentInfo,
+		CompositeAlpha, PresentMode, Surface, SurfaceInfo, Swapchain, SwapchainCreateInfo,
+		SwapchainPresentInfo, acquire_next_image,
 	},
 	sync::GpuFuture,
-	Validated, VulkanError,
 };
 use wgui::{
 	event::{MouseButtonIndex, MouseDownEvent, MouseMotionEvent, MouseUpEvent, MouseWheelEvent},
-	gfx::{cmd::WGfxClearMode, WGfx},
+	gfx::{WGfx, cmd::WGfxClearMode},
 	renderer_vk::{self},
 };
 use winit::{
@@ -32,7 +32,7 @@ use winit::{
 use crate::{
 	rate_limiter::RateLimiter,
 	testbed::{
-		testbed_dashboard::TestbedDashboard, testbed_generic::TestbedGeneric, TestbedUpdateParams,
+		TestbedUpdateParams, testbed_dashboard::TestbedDashboard, testbed_generic::TestbedGeneric,
 	},
 };
 
@@ -337,7 +337,11 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
 						.unwrap();
 
 					let mut layout = testbed.layout().borrow_mut();
+					let globals = layout.state.globals.clone();
+					let mut globals = globals.get();
+
 					let mut draw_params = wgui::drawing::DrawParams {
+						globals: &mut globals,
 						layout: &mut layout,
 						debug_draw: debug_draw_enabled,
 						alpha: timestep.alpha,
@@ -347,7 +351,12 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
 					drop(layout);
 
 					let draw_result = render_context
-						.draw(&mut shared_context, &mut cmd_buf, &primitives)
+						.draw(
+							&globals.font_system,
+							&mut shared_context,
+							&mut cmd_buf,
+							&primitives,
+						)
 						.unwrap();
 
 					if debug_draw_enabled {

uidev/src/testbed/testbed_any.rs

@@ -5,6 +5,7 @@ use crate::{
 use glam::Vec2;
 use wgui::{
 	assets::AssetPath,
+	font_config::WguiFontConfig,
 	globals::WguiGlobals,
 	layout::{LayoutParams, RcLayout},
 	parser::{ParseDocumentParams, ParserState},
@@ -24,6 +25,7 @@ impl TestbedAny {
 		let globals = WguiGlobals::new(
 			Box::new(assets::Asset {}),
 			wgui::globals::Defaults::default(),
+			&WguiFontConfig::default(),
 		)?;
 
 		let (layout, state) = wgui::parser::new_layout_from_assets(

uidev/src/testbed/testbed_generic.rs

@@ -8,11 +8,12 @@ use glam::Vec2;
 use wgui::{
 	assets::AssetPath,
 	components::{
+		Component,
 		button::{ButtonClickCallback, ComponentButton},
 		checkbox::ComponentCheckbox,
-		Component,
 	},
 	drawing::Color,
+	font_config::WguiFontConfig,
 	globals::WguiGlobals,
 	i18n::Translation,
 	layout::{Layout, LayoutParams, RcLayout, Widget},
@@ -76,6 +77,7 @@ impl TestbedGeneric {
 		let globals = WguiGlobals::new(
 			Box::new(assets::Asset {}),
 			wgui::globals::Defaults::default(),
+			&WguiFontConfig::default(),
 		)?;
 
 		let extra = ParseDocumentExtra {

wgui/Cargo.toml

@@ -30,3 +30,4 @@ taffy = "0.9.1"
 vulkano = { workspace = true }
 vulkano-shaders = { workspace = true }
 rust-embed = { workspace = true }
+flate2 = "1.1.5"

wgui/src/assets.rs

@@ -1,3 +1,5 @@
+use flate2::read::GzDecoder;
+use std::io::Read;
 use std::path::{Path, PathBuf};
 
 #[derive(Clone, Copy)]
@@ -74,6 +76,13 @@ impl Default for AssetPathOwned {
 
 pub trait AssetProvider {
 	fn load_from_path(&mut self, path: &str) -> anyhow::Result<Vec<u8>>;
+	fn load_from_path_gzip(&mut self, path: &str) -> anyhow::Result<Vec<u8>> {
+		let compressed = self.load_from_path(path)?;
+		let mut gz = GzDecoder::new(&compressed[..]);
+		let mut out = Vec::new();
+		gz.read_to_end(&mut out)?;
+		Ok(out)
+	}
 }
 
 // replace "./foo/bar/../file.txt" with "./foo/file.txt"

wgui/src/components/checkbox.rs

@@ -8,9 +8,9 @@ use crate::{
 	animation::{Animation, AnimationEasing},
 	components::{Component, ComponentBase, ComponentTrait, InitData},
 	drawing::Color,
-	event::{CallbackDataCommon, EventAlterables, EventListenerCollection, EventListenerID, EventListenerKind},
+	event::{CallbackDataCommon, EventListenerCollection, EventListenerID, EventListenerKind},
 	i18n::Translation,
-	layout::{self, LayoutState, WidgetID, WidgetPair},
+	layout::{self, WidgetID, WidgetPair},
 	renderer_vk::text::{FontWeight, TextStyle},
 	widget::{
 		ConstructEssentials, EventResult,
@@ -53,6 +53,7 @@ struct State {
 
 #[allow(clippy::struct_field_names)]
 struct Data {
+	#[allow(dead_code)]
 	id_container: WidgetID, // Rectangle, transparent if not hovered
 
 	//id_outer_box: WidgetID, // Rectangle, parent of container

wgui/src/components/mod.rs

@@ -17,6 +17,7 @@ pub struct InitData<'a> {
 // common component data
 #[derive(Default)]
 pub struct ComponentBase {
+	#[allow(dead_code)]
 	lhandles: Vec<EventListenerID>,
 }
 

wgui/src/components/slider.rs

@@ -53,7 +53,8 @@ struct State {
 }
 
 struct Data {
-	body: WidgetID,                  // Div
+	#[allow(dead_code)]
+	body: WidgetID, // Div
 	slider_handle_rect_id: WidgetID, // Rectangle
 	slider_text_id: WidgetID,        // Text
 	slider_handle_node: taffy::NodeId,

wgui/src/drawing.rs

@@ -7,6 +7,7 @@ use taffy::TraversePartialTree;
 use crate::{
 	drawing,
 	event::EventAlterables,
+	globals::Globals,
 	layout::Widget,
 	renderer_vk::text::{TextShadow, custom_glyph::CustomGlyph},
 	stack::{self, ScissorBoundary, ScissorStack, TransformStack},
@@ -169,6 +170,7 @@ pub enum RenderPrimitive {
 }
 
 pub struct DrawParams<'a> {
+	pub globals: &'a Globals,
 	pub layout: &'a mut Layout,
 	pub debug_draw: bool,
 	pub alpha: f32, // timestep alpha, 0.0 - 1.0, used for motion interpolation if rendering above tick rate: smoother animations or scrolling
@@ -347,6 +349,7 @@ pub fn draw(params: &mut DrawParams) -> anyhow::Result<Vec<RenderPrimitive>> {
 	let mut alterables = EventAlterables::default();
 
 	let mut state = DrawState {
+		globals: params.globals,
 		primitives: &mut primitives,
 		transform_stack: &mut transform_stack,
 		scissor_stack: &mut scissor_stack,

wgui/src/event.rs

@@ -2,7 +2,6 @@ use std::{
 	any::{Any, TypeId},
 	cell::RefMut,
 	collections::HashSet,
-	ops::Deref,
 };
 
 use glam::Vec2;

wgui/src/font_config.rs

@@ -0,0 +1,45 @@
+use parking_lot::Mutex;
+
+#[derive(Default)]
+pub struct WguiFontConfig<'a> {
+	pub binaries: Vec<&'a [u8]>,
+	pub family_name_sans_serif: &'a str,
+	pub family_name_serif: &'a str,
+	pub family_name_monospace: &'a str,
+}
+
+pub struct WguiFontSystem {
+	pub system: Mutex<cosmic_text::FontSystem>,
+}
+
+impl WguiFontSystem {
+	pub fn new(config: &WguiFontConfig) -> Self {
+		let mut db = cosmic_text::fontdb::Database::new();
+
+		let system = if config.binaries.is_empty() {
+			cosmic_text::FontSystem::new()
+		} else {
+			for binary in &config.binaries {
+				// binary data is copied and preserved here
+				db.load_font_data(binary.to_vec());
+			}
+
+			if !config.family_name_sans_serif.is_empty() {
+				db.set_sans_serif_family(config.family_name_sans_serif);
+			}
+
+			if !config.family_name_serif.is_empty() {
+				db.set_serif_family(config.family_name_serif);
+			}
+
+			// we don't require anything special, at least for now
+			let locale = String::from("C");
+
+			cosmic_text::FontSystem::new_with_locale_and_db(locale, db)
+		};
+
+		Self {
+			system: Mutex::new(system),
+		}
+	}
+}

wgui/src/globals.rs

@@ -7,6 +7,7 @@ use std::{
 use crate::{
 	assets::{AssetPath, AssetProvider},
 	assets_internal, drawing,
+	font_config::{WguiFontConfig, WguiFontSystem},
 	i18n::I18n,
 };
 
@@ -31,13 +32,18 @@ pub struct Globals {
 	pub assets_builtin: Box<dyn AssetProvider>,
 	pub i18n_builtin: I18n,
 	pub defaults: Defaults,
+	pub font_system: WguiFontSystem,
 }
 
 #[derive(Clone)]
 pub struct WguiGlobals(Rc<RefCell<Globals>>);
 
 impl WguiGlobals {
-	pub fn new(mut assets_builtin: Box<dyn AssetProvider>, defaults: Defaults) -> anyhow::Result<Self> {
+	pub fn new(
+		mut assets_builtin: Box<dyn AssetProvider>,
+		defaults: Defaults,
+		font_config: &WguiFontConfig,
+	) -> anyhow::Result<Self> {
 		let i18n_builtin = I18n::new(&mut assets_builtin)?;
 		let assets_internal = Box::new(assets_internal::AssetInternal {});
 
@@ -46,6 +52,7 @@ impl WguiGlobals {
 			assets_builtin,
 			i18n_builtin,
 			defaults,
+			font_system: WguiFontSystem::new(font_config),
 		}))))
 	}
 
@@ -81,4 +88,8 @@ impl WguiGlobals {
 	pub fn assets_builtin(&self) -> RefMut<'_, Box<dyn AssetProvider>> {
 		RefMut::map(self.0.borrow_mut(), |x| &mut x.assets_builtin)
 	}
+
+	pub fn font_system(&self) -> RefMut<'_, WguiFontSystem> {
+		RefMut::map(self.0.borrow_mut(), |x| &mut x.font_system)
+	}
 }

wgui/src/i18n.rs

@@ -75,7 +75,7 @@ impl I18n {
 		log::info!("Guessed system language: {lang}");
 
 		match lang.as_str() {
-			"en" | "pl" | "it" | "ja" | "es" => {}
+			"en" | "pl" | "it" | "ja" | "es" | "de" => {}
 			_ => {
 				log::warn!("Unsupported language \"{}\", defaulting to \"en\".", lang.as_str());
 

wgui/src/layout.rs

@@ -198,7 +198,7 @@ fn add_child_internal(
 
 pub struct LayoutCommon<'a> {
 	alterables: EventAlterables,
-	layout: &'a mut Layout,
+	pub layout: &'a mut Layout,
 }
 
 impl LayoutCommon<'_> {
@@ -564,6 +564,8 @@ impl Layout {
 		log::debug!("re-computing layout, size {}x{}", size.x, size.y);
 		self.prev_size = size;
 
+		let globals = self.state.globals.get();
+
 		self.state.tree.compute_layout_with_measure(
 			self.tree_root_node,
 			taffy::Size {
@@ -583,7 +585,10 @@ impl Layout {
 					None => taffy::Size::ZERO,
 					Some(h) => {
 						if let Some(w) = self.state.widgets.get(*h) {
-							w.0.borrow_mut().obj.measure(known_dimensions, available_space)
+							w.0
+								.borrow_mut()
+								.obj
+								.measure(&globals, known_dimensions, available_space)
 						} else {
 							taffy::Size::ZERO
 						}

wgui/src/lib.rs

@@ -27,6 +27,7 @@ mod assets_internal;
 pub mod components;
 pub mod drawing;
 pub mod event;
+pub mod font_config;
 pub mod gfx;
 pub mod globals;
 pub mod i18n;

wgui/src/parser/mod.rs

@@ -8,7 +8,7 @@ mod widget_rectangle;
 mod widget_sprite;
 
 use crate::{
-	assets::{normalize_path, AssetPath, AssetPathOwned},
+	assets::{AssetPath, AssetPathOwned, normalize_path},
 	components::{Component, ComponentWeak},
 	drawing::{self},
 	globals::WguiGlobals,
@@ -624,7 +624,7 @@ pub fn replace_vars(input: &str, vars: &HashMap<Rc<str>, Rc<str>>) -> Rc<str> {
 		if let Some(replacement) = vars.get(input_var) {
 			replacement.clone()
 		} else {
-			log::warn!("failed to replace var named \"{input_var}\" (not found)");
+			// failed to find var, return an empty string
 			Rc::from("")
 		}
 	});

wgui/src/parser/style.rs

@@ -65,6 +65,7 @@ pub fn parse_text_style(attribs: &[AttribPair]) -> TextStyle {
 				}
 			},
 			"weight" => match value {
+				"light" => style.weight = Some(FontWeight::Light),
 				"normal" => style.weight = Some(FontWeight::Normal),
 				"bold" => style.weight = Some(FontWeight::Bold),
 				_ => {

wgui/src/renderer_vk/context.rs

@@ -7,13 +7,14 @@ use vulkano::pipeline::graphics::viewport;
 
 use crate::{
 	drawing::{self},
+	font_config,
 	gfx::{WGfx, cmd::GfxCommandBuffer},
 };
 
 use super::{
 	rect::{RectPipeline, RectRenderer},
 	text::{
-		DEFAULT_METRICS, FONT_SYSTEM, SWASH_CACHE, TextArea, TextBounds,
+		DEFAULT_METRICS, SWASH_CACHE, TextArea, TextBounds,
 		text_atlas::{TextAtlas, TextPipeline},
 		text_renderer::TextRenderer,
 	},
@@ -51,6 +52,7 @@ impl RendererPass<'_> {
 
 	fn submit(
 		&mut self,
+		font_system: &font_config::WguiFontSystem,
 		gfx: &Arc<WGfx>,
 		viewport: &mut Viewport,
 		cmd_buf: &mut GfxCommandBuffer,
@@ -90,7 +92,7 @@ impl RendererPass<'_> {
 		self.rect_renderer.render(gfx, viewport, &vk_scissor, cmd_buf)?;
 
 		{
-			let mut font_system = FONT_SYSTEM.lock();
+			let mut font_system = font_system.system.lock();
 			let mut swash_cache = SWASH_CACHE.lock();
 
 			self.text_renderer.prepare(
@@ -217,6 +219,7 @@ impl Context {
 
 	pub fn draw(
 		&mut self,
+		font_system: &font_config::WguiFontSystem,
 		shared: &mut SharedContext,
 		cmd_buf: &mut GfxCommandBuffer,
 		primitives: &[drawing::RenderPrimitive],
@@ -302,7 +305,13 @@ impl Context {
 		};
 
 		for mut pass in passes {
-			pass.submit(&shared.gfx, &mut self.viewport, cmd_buf, &mut atlas.text_atlas)?;
+			pass.submit(
+				font_system,
+				&shared.gfx,
+				&mut self.viewport,
+				cmd_buf,
+				&mut atlas.text_atlas,
+			)?;
 		}
 
 		Ok(res)

wgui/src/renderer_vk/text/mod.rs

@@ -13,7 +13,6 @@ use parking_lot::Mutex;
 
 use crate::drawing::{self};
 
-pub static FONT_SYSTEM: LazyLock<Mutex<FontSystem>> = LazyLock::new(|| Mutex::new(FontSystem::new()));
 pub static SWASH_CACHE: LazyLock<Mutex<SwashCache>> = LazyLock::new(|| Mutex::new(SwashCache::new()));
 
 /// Used in case no `font_size` is defined
@@ -102,6 +101,7 @@ impl From<FontStyle> for Style {
 
 #[derive(Default, Debug, Clone, Copy)]
 pub enum FontWeight {
+	Light,
 	#[default]
 	Normal,
 	Bold,
@@ -110,6 +110,7 @@ pub enum FontWeight {
 impl From<FontWeight> for Weight {
 	fn from(value: FontWeight) -> Self {
 		match value {
+			FontWeight::Light => Self::LIGHT,
 			FontWeight::Normal => Self::NORMAL,
 			FontWeight::Bold => Self::BOLD,
 		}

wgui/src/widget/label.rs

@@ -8,9 +8,9 @@ use crate::{
 	drawing::{self, Boundary, PrimitiveExtent},
 	event::CallbackDataCommon,
 	globals::Globals,
-	i18n::{I18n, Translation},
+	i18n::Translation,
 	layout::WidgetID,
-	renderer_vk::text::{TextStyle, FONT_SYSTEM},
+	renderer_vk::text::TextStyle,
 };
 
 use super::{WidgetObj, WidgetState};
@@ -41,7 +41,7 @@ impl WidgetLabel {
 
 		let mut buffer = Buffer::new_empty(metrics);
 		{
-			let mut font_system = FONT_SYSTEM.lock();
+			let mut font_system = globals.font_system.system.lock();
 			let mut buffer = buffer.borrow_with(&mut font_system);
 			buffer.set_wrap(wrap);
 
@@ -63,19 +63,19 @@ impl WidgetLabel {
 
 	// set text without layout/re-render update.
 	// Not recommended unless the widget wasn't rendered yet (first init).
-	pub fn set_text_simple(&mut self, i18n: &mut I18n, translation: Translation) -> bool {
+	pub fn set_text_simple(&mut self, globals: &mut Globals, translation: Translation) -> bool {
 		if self.params.content == translation {
 			return false;
 		}
 
 		self.params.content = translation;
 		let attrs = Attrs::from(&self.params.style);
-		let mut font_system = FONT_SYSTEM.lock();
+		let mut font_system = globals.font_system.system.lock();
 
 		let mut buffer = self.buffer.borrow_mut();
 		buffer.set_rich_text(
 			&mut font_system,
-			[(self.params.content.generate(i18n).as_ref(), attrs)],
+			[(self.params.content.generate(&mut globals.i18n_builtin).as_ref(), attrs)],
 			&Attrs::new(),
 			Shaping::Advanced,
 			self.params.style.align.map(Into::into),
@@ -93,7 +93,9 @@ impl WidgetLabel {
 
 	// set text and check if it needs to be re-rendered/re-layouted
 	pub fn set_text(&mut self, common: &mut CallbackDataCommon, translation: Translation) {
-		if self.set_text_simple(&mut common.i18n(), translation) {
+		let mut globals = common.state.globals.get();
+
+		if self.set_text_simple(&mut globals, translation) {
 			common.mark_widget_dirty(self.id);
 		}
 	}
@@ -113,7 +115,7 @@ impl WidgetObj for WidgetLabel {
 
 		if self.last_boundary != boundary {
 			self.last_boundary = boundary;
-			let mut font_system = FONT_SYSTEM.lock();
+			let mut font_system = state.globals.font_system.system.lock();
 			let mut buffer = self.buffer.borrow_mut();
 			buffer.set_size(&mut font_system, Some(boundary.size.x), Some(boundary.size.y));
 		}
@@ -130,6 +132,7 @@ impl WidgetObj for WidgetLabel {
 
 	fn measure(
 		&mut self,
+		globals: &Globals,
 		known_dimensions: taffy::Size<Option<f32>>,
 		available_space: taffy::Size<taffy::AvailableSpace>,
 	) -> taffy::Size<f32> {
@@ -140,7 +143,8 @@ impl WidgetObj for WidgetLabel {
 			AvailableSpace::Definite(width) => Some(width),
 		});
 
-		let mut font_system = FONT_SYSTEM.lock();
+		let wgui_font_system = &globals.font_system;
+		let mut font_system = wgui_font_system.system.lock();
 		let mut buffer = self.buffer.borrow_mut();
 
 		buffer.set_size(&mut font_system, width_constraint, None);

wgui/src/widget/mod.rs

@@ -10,6 +10,7 @@ use crate::{
 		EventListenerKind::{self, InternalStateChange, MouseLeave},
 		MouseWheelEvent,
 	},
+	globals::Globals,
 	layout::{Layout, LayoutState, WidgetID},
 	stack::{ScissorStack, TransformStack},
 };
@@ -108,6 +109,7 @@ impl WidgetState {
 
 // global draw params
 pub struct DrawState<'a> {
+	pub globals: &'a Globals,
 	pub layout: &'a Layout,
 	pub primitives: &'a mut Vec<RenderPrimitive>,
 	pub transform_stack: &'a mut TransformStack,
@@ -151,6 +153,7 @@ pub trait WidgetObj: AnyTrait {
 
 	fn measure(
 		&mut self,
+		_globals: &Globals,
 		_known_dimensions: taffy::Size<Option<f32>>,
 		_available_space: taffy::Size<taffy::AvailableSpace>,
 	) -> taffy::Size<f32> {
@@ -181,11 +184,7 @@ impl EventResult {
 
 	#[must_use]
 	pub fn merge(self, other: Self) -> Self {
-		if self > other {
-			self
-		} else {
-			other
-		}
+		if self > other { self } else { other }
 	}
 }
 

wgui/src/widget/sprite.rs

@@ -5,10 +5,11 @@ use slotmap::Key;
 
 use crate::{
 	drawing::{self, PrimitiveExtent},
+	globals::Globals,
 	layout::WidgetID,
 	renderer_vk::text::{
+		DEFAULT_METRICS,
 		custom_glyph::{CustomGlyph, CustomGlyphData},
-		DEFAULT_METRICS, FONT_SYSTEM,
 	},
 };
 
@@ -67,7 +68,7 @@ impl WidgetObj for WidgetSprite {
 			let mut buffer = Buffer::new_empty(DEFAULT_METRICS);
 
 			{
-				let mut font_system = FONT_SYSTEM.lock();
+				let mut font_system = state.globals.font_system.system.lock();
 				let mut buffer = buffer.borrow_with(&mut font_system);
 				let attrs = Attrs::new().color(Color::rgb(255, 0, 255)).weight(Weight::BOLD);
 
@@ -88,6 +89,7 @@ impl WidgetObj for WidgetSprite {
 
 	fn measure(
 		&mut self,
+		_globals: &Globals,
 		_known_dimensions: taffy::Size<Option<f32>>,
 		_available_space: taffy::Size<taffy::AvailableSpace>,
 	) -> taffy::Size<f32> {

wlx-overlay-s/src/gui/panel/label.rs

@@ -15,8 +15,8 @@ use wgui::{
     event::{self, EventCallback},
     i18n::Translation,
     layout::Layout,
-    parser::{parse_color_hex, CustomAttribsInfoOwned},
-    widget::{label::WidgetLabel, EventResult},
+    parser::{CustomAttribsInfoOwned, parse_color_hex},
+    widget::{EventResult, label::WidgetLabel},
 };
 
 use crate::state::AppState;
@@ -123,13 +123,13 @@ pub(super) fn setup_custom_label<S: 'static>(
 
                     let pretty_tz = maybe_pretty_tz.as_ref().map_or("Local", |x| x.as_str());
 
-                    let mut i18n = layout.state.globals.i18n();
+                    let mut globals = layout.state.globals.get();
                     layout
                         .state
                         .widgets
                         .get_as::<WidgetLabel>(attribs.widget_id)
                         .unwrap()
-                        .set_text_simple(&mut i18n, Translation::from_raw_text(pretty_tz));
+                        .set_text_simple(&mut globals, Translation::from_raw_text(pretty_tz));
 
                     // does not need to be dynamic
                     return;

wlx-overlay-s/src/gui/panel/mod.rs

@@ -1,7 +1,7 @@
 use std::{cell::RefCell, rc::Rc, sync::Arc};
 
 use button::setup_custom_button;
-use glam::{vec2, Affine2, Vec2};
+use glam::{Affine2, Vec2, vec2};
 use label::setup_custom_label;
 use vulkano::{command_buffer::CommandBufferUsage, image::view::ImageView};
 use wgui::{
@@ -15,14 +15,14 @@ use wgui::{
     layout::{Layout, LayoutParams, WidgetID},
     parser::ParserState,
     renderer_vk::context::Context as WguiContext,
-    widget::{label::WidgetLabel, rectangle::WidgetRectangle, EventResult},
+    widget::{EventResult, label::WidgetLabel, rectangle::WidgetRectangle},
 };
 
 use crate::{
     backend::input::{Haptics, HoverResult, PointerHit, PointerMode},
     graphics::{CommandBuffers, ExtentExt},
     state::AppState,
-    windowing::backend::{ui_transform, FrameMeta, OverlayBackend, ShouldRender},
+    windowing::backend::{FrameMeta, OverlayBackend, ShouldRender, ui_transform},
 };
 
 use super::{timer::GuiTimer, timestep::Timestep};
@@ -237,13 +237,21 @@ impl<S: 'static> OverlayBackend for GuiPanel<S> {
             wgui::gfx::cmd::WGfxClearMode::Clear([0.0, 0.0, 0.0, 0.0]),
         )?;
 
+        let globals = self.layout.state.globals.clone(); // sorry
+        let mut globals = globals.get();
+
         let primitives = wgui::drawing::draw(&mut wgui::drawing::DrawParams {
+            globals: &mut globals,
             layout: &mut self.layout,
             debug_draw: false,
             alpha,
         })?;
-        self.context
-            .draw(&mut app.wgui_shared, &mut cmd_buf, &primitives)?;
+        self.context.draw(
+            &globals.font_system,
+            &mut app.wgui_shared,
+            &mut cmd_buf,
+            &primitives,
+        )?;
         cmd_buf.end_rendering()?;
         buf.push(cmd_buf.build()?);
 

wlx-overlay-s/src/state.rs

@@ -1,10 +1,11 @@
 use glam::Affine3A;
 use idmap::IdMap;
 use serde::{Deserialize, Serialize};
-use smallvec::{smallvec, SmallVec};
+use smallvec::{SmallVec, smallvec};
 use std::sync::Arc;
 use wgui::{
-    gfx::WGfx, globals::WguiGlobals, renderer_vk::context::SharedContext as WSharedContext,
+    font_config::WguiFontConfig, gfx::WGfx, globals::WguiGlobals,
+    renderer_vk::context::SharedContext as WSharedContext,
 };
 
 #[cfg(feature = "wayvr")]
@@ -97,6 +98,7 @@ impl AppState {
             wgui_globals: WguiGlobals::new(
                 Box::new(gui::asset::GuiAsset {}),
                 wgui::globals::Defaults::default(),
+                &WguiFontConfig::default(),
             )?,
 
             #[cfg(feature = "osc")]