- Add `mix` method to mix two color.
- Export `ui::theme::*` to crate root, before `use
ui:theme::ActiveTheme` to `use ui::ActiveTheme`.
## Break Changes
- Moved `ui::theme::Colorize` to `ui::Colorize`.
- Merged `ColorExt` to `Colorize`.
- Renamed `to_hex_string` to `to_hex`, `parse_hex_string` to
`parse_hex`.
Closes#502#499
## Added
- Add `visible` method to `Panel` trait, if return false this panel will
disappear.
## Break changes
- Renamed `closeable` to `closable`.
- The `title_style`, `closable`, `zoomable` in `Panel` trait have been
change `cx: &WindowContext` to `cx: &AppContext`.
Optimization of https://github.com/longbridgeapp/gpui-component/pull/329
The issue with the initial width of the Panel has been optimised to
ensure that the left side of a Panel combination like [Some(px(510.)),
None] is initially rendered with a width of 510px.
---------
Co-authored-by: Jason Lee <huacnlee@gmail.com>
The essence of the problem is that flex_basis initial_size and
flex_basis size are in conflict: the size overwrites the initial_size
percentage and loses the original percentage in extremely narrow parent
groups, so we have to add the field to the state persisting the desired
percentage.
Fix#262

- Export add_panel_at method for TabPanel to split_panel.
- Fix resizeable_panel init size support.
- Fix panel resize to let panel that have initial size will not auto resize on window resize.
- Fix resize_handle sometimes will invisibly bug.
- Update TabPanel new to support give parent StackPanel.