* Returns openness in CollapsingResponse
* Make CollapsingState a building block for custom collapsing headers
* Add a demo of the custom collapsing header
* Revert to much simpler tree demo
* Add CollapsingState::is_open and CollapsingState::set_open
* 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
This is a good early-out for widgets in `ScrollAreas`, but
also prepares for speeding up the first pass of a possible two-pass
version of egui: https://github.com/emilk/egui/issues/843
This refactors the widget state storage introduced by @optozorax in https://github.com/emilk/egui/pull/257
* Unify the four buckets (`data`, `data_temp`, `id_data` and `id_data_temp`) into a single `data`.
* Less complexity, and also less chance of error (storing in one bucket, reading from another).
* Store data by `Id` and `TypeId`.
* Users can thus reuse the same `Id` to store many types.
* Uses a simple xor of id and typeid, which is fast and good since both id and typeid are already high-entropy hashes.
* Use different suffixes on the functions to pick if you want the data persisted or not (`get_temp`, `insert_persisted`, etc).
* Writing with one suffix and reading with the other works.
* To store state not bound to a specific `Id` (i.e. only based on type), use the new `Id::null` as the key.
* Rename epaint feature "persistence" to "serialize"
* Add separate "serialize" feature to egui
* egui_demo_lib: separate serialize and persistence features
* Add App::persist_native_window and App::persist_egui_memory
Controls what gets persisted
Label text will now be centered, right-aligned and/or
justified based on the layout.
Galleys are no longer always pivoted in the left top corner,
so now have a Rect rather than just a size.
This PR introduces a completely rewritten text layout engine which is simpler and more powerful. It allows mixing different text styles (heading, body, etc) and formats (color, underlining, strikethrough, …) in the same layout pass, and baked into the same `Galley`.
This opens up the door to having a syntax-highlighed code editor, or a WYSIWYG markdown editor.
One major change is the color is now baked in at layout time. However, many widgets changes text color on hovered. But we need to do the text layout before we know if it is hovered. Therefor the painter has an option to override the text color of a galley.
## Performance
Text layout alone is about 20% slower, but a lot of that is because more tessellation is done upfront. Text tessellation is now a lot faster, but text layout + tessellation still lands at a net loss of 5-10% in performance. There are however a few tricks to speed it up (like using `smallvec`) which I am saving for later. Text layout is also cached, meaning that in most cases (when all text isn't changing each frame) text tessellation is actually more important (and that's more than 2x faster!).
Sadly, the actual text cache lookup is significantly slower (300ns -> 600ns). That's because the `TextLayoutJob` is a lot bigger (it has more options, like underlining, fonts etc), so it is slower to hash and compare. I have an idea how to speed this up, but I need to do some other work before I can implement that.
All in all, the performance impact on `demo_with_tesselate__realistic` is about 5-6% in the red. Not great; not terrible. The benefits are worth it, but I also think with some work I can get that down significantly, hopefully down to the old levels.
* Add collapsing header select as selectable label
* Modified Tree demo adding selectable example
* Update egui/src/containers/collapsing_header.rs
Selected is not linked to selectable
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
* Update egui/src/containers/collapsing_header.rs
Description example
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
* Changing example without name clashing
* Fixing merge issue (ah I miss P4 sometimes)
* Fixing doctest example
* Add possibility to show background to a single one
* Fixing clippy test
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
* Tweak style
More compact, less round, less noisy
* Button text is now same size as body text
* The rounder corners are now less rounded
* Collapsing headers no longer have a frame around them
* Combo-boxes looks better when opened
* Slightly more muted colors
* Remove extra line spacing after `\n` (i.e. between paragraphs)
* Thinner scrollbars
* Tweak light mode
* Tweak shadows
* Fix broken doc link
* Add style tweak to CHANGELOG
* Replace `impl Into<String>` with `impl ToString`
This is something I ran into today. Types that implement
`std::fmt::Display` cannot be passed to functions that take `impl
Into<String>`. You have to call `display_thing.to_string()`. Its a small
thing but would be fixed by instead taking `impl ToString`.
Afaik `impl ToString` is a superset of `impl Into<String>`, unless users
manually implement `Into<String> for T` (or `From<T> for String`) for
their own types. However I think its more common to implement `Display`
as that works with `println` and friends. The main difference is that
`Display::fmt` can return errors but thats also quite rare in my
experience.
I did some testing in a [playground] and seems to work.
[playground]: https://play.rust-lang.org/?version=stable&mode=debug&edition=2018&gist=1111e071f6ae416ae2688d58d2e9b575
* Silence warnings
* init work
* implement deferred deserialization
* many improvements
* rename `DataElement` -> `AnyMapElement`
* make `data` in `Memory` as public field of type with public interface
* make interface more rich
* transform most unwraps to proper error handling
* make `AnyMap` store by `TypeId`, so now individual type can be counted and reset
* improve storing TypeId between different rust versions
* rewrite system widgets to use AnyMap
* refactor everything
* replace `serde_json` -> `ron`
* move `any_map` to module
* separate `AnyMap` into `AnyMapId` and `serializable::AnyMapId` in order to not require `serde` traits in methods
* add `AnyMap` and `serializable::AnyMap` that stores elements just by type, without `Id`
* write documentation
* change tooltips and color picker to use `Memory::data_temp`
* fix bugs and docs
* Apply suggestions from code review
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
* rename `AnyMap` → `TypeMap`
* rename `AnyMapId` → `AnyMap`, add generic <Key> to it
* rename files `id_map` → `any_map`
* move out usages from `serializable` mod
* rename `ToDeserialize` → `Serialized`
* fix bug with counting
* add tests, and...
* rename `reset` → `remove`
* add function `remove_by_type`
* format code
* improve code
* make identical interface for serialized and simple maps
* make serialized maps serialized fully, without features by moving this into `Memory` struct with `#[cfg(feature = "persistence")]` under fields
* move `serialized::TypeId` into `AnyMapElement` struct
* fix pipeline and add one more test
* update docs
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
Add support for primary, secondary and middle mouse buttons. Also improve ability to click things in low FPS situations.
This introduces a lot of breaking changes:
Backends/integrations now pass mouse events via the even stream.
Response has an interface of mostly methods instead of public members.
input.mouse is now input.pointer and has new interface.
* Rename 'mouse' to 'pointer' everywhere (pointer = mouse or touch)
* Make Response::clicked and Response::double_clicked into methods
* Remove Response::active and add dragged() and interact_pointer_pos()
* Support multiple mouse buttons
* Make PointerState interface all methods
* Make most members of Response private
* Wrap Layout and Region into a new struct Placer
* [egui] Add a simple grid layout
* Refactor CollapsingHeader code (simplify header painting)
* Fix: allow putting a CollapsingHeader inside of a grid layout
* [demo] Add a widget gallery
Closes https://github.com/emilk/egui/issues/88
* Add optional striped grid background
Emil Ernerfeldt
4JX
Juan Campa
gents83
David Pedersen
ilya sheprut
Bradley Smith
Emil Ernerfeldt