Move all crates into a crates directory (#1940)

crates/egui_extras/src/lib.rs

@@ -0,0 +1,54 @@
+//! This is a crate that adds some features on top top of [`egui`](https://github.com/emilk/egui).
+//!
+//! This crate are for experimental features, and features that require big dependencies that does not belong in `egui`.
+//!
+//! ## Feature flags
+#![cfg_attr(feature = "document-features", doc = document_features::document_features!())]
+//!
+
+#![allow(clippy::float_cmp)]
+#![allow(clippy::manual_range_contains)]
+
+#[cfg(feature = "chrono")]
+mod datepicker;
+
+pub mod image;
+mod layout;
+mod sizing;
+mod strip;
+mod table;
+
+#[cfg(feature = "chrono")]
+pub use crate::datepicker::DatePickerButton;
+
+pub use crate::image::RetainedImage;
+pub(crate) use crate::layout::StripLayout;
+pub use crate::sizing::Size;
+pub use crate::strip::*;
+pub use crate::table::*;
+
+/// Log an error with either `tracing` or `eprintln`
+macro_rules! log_err {
+    ($fmt: literal, $($arg: tt)*) => {{
+        #[cfg(feature = "tracing")]
+        tracing::error!($fmt, $($arg)*);
+
+        #[cfg(not(feature = "tracing"))]
+        eprintln!(
+            concat!("egui_extras: ", $fmt), $($arg)*
+        );
+    }};
+}
+pub(crate) use log_err;
+
+/// Panic in debug builds, log otherwise.
+macro_rules! log_or_panic {
+    ($fmt: literal, $($arg: tt)*) => {{
+        if cfg!(debug_assertions) {
+            panic!($fmt, $($arg)*);
+        } else {
+            $crate::log_err!($fmt, $($arg)*);
+        }
+    }};
+}
+pub(crate) use log_or_panic;