Choose your own font and size (#1154)

* Refactor text layout: don't need &Fonts in all functions
* Replace indexing in Fonts with member function
* Wrap Fonts in a Mutex
* Remove mutex for Font::glyph_info_cache
* Remove RwLock around Font::characters
* Put FontsImpl and GalleyCache behind the same Mutex
* Round font sizes to whole pixels before deduplicating them
* Make TextStyle !Copy
* Implement user-named TextStyle:s
* round font size earlier
* Cache fonts based on family and size
* Move TextStyle into egui and Style
* Remove body_text_style
* Query graphics about max texture size and use that as font atlas size
* Recreate texture atlas when it is getting full

egui_glow/src/lib.rs

@@ -123,14 +123,19 @@ impl EguiGlow {
         gl_window: &glutin::WindowedContext<glutin::PossiblyCurrent>,
         gl: &glow::Context,
     ) -> Self {
+        let painter = crate::Painter::new(gl, None, "")
+            .map_err(|error| {
+                crate::misc_util::glow_print_error(format!(
+                    "error occurred in initializing painter:\n{}",
+                    error
+                ));
+            })
+            .unwrap();
+
         Self {
             egui_ctx: Default::default(),
-            egui_winit: egui_winit::State::new(gl_window.window()),
-            painter: crate::Painter::new(gl, None, "")
-                .map_err(|error| {
-                    eprintln!("some error occurred in initializing painter\n{}", error);
-                })
-                .unwrap(),
+            egui_winit: egui_winit::State::new(painter.max_texture_side(), gl_window.window()),
+            painter,
             shapes: Default::default(),
             textures_delta: Default::default(),
         }