* Closes https://github.com/emilk/egui/issues/3804
Add ability to select the text in labels with mouse-drag, double-click,
and keyboard (once clicked).
Hit Cmd+C to copy the text. If everything of a label with elided text is
selected, the copy command will copy the full non-elided text. IME and
accesskit _should_ work, but is untested.
You can control wether or not text in labels is selected globally in
`style.interaction.selectable_labels` or on a per-label basis in
`Label::selectable`. The default is ON.
This also cleans up the `TextEdit` code somewhat, fixing a couple
smaller bugs along the way.
This does _not_ implement selecting text across multiple widgets. Text
selection is only supported within a single `Label`, `TextEdit`, `Link`
or `Hyperlink`.
## TODO
* [x] Test
This introduces a special `Color32::PLACEHOLDER` which, during text
painting, will be replaced with `TextShape::fallback_color`.
The fallback color is mandatory to set in all text painting. Usually
this comes from the current visual style.
This lets users color only parts of a `WidgetText` (using e.g. a
`LayoutJob` or a `Galley`), where the uncolored parts (using
`Color32::PLACEHOLDER`) will be replaced by a default widget color (e.g.
blue for a hyperlink).
For instance, you can color the `⚠️`-emoji red in a piece of text red
and leave the rest of the text uncolored. The color of the rest of the
text will then depend on wether or not you put that text in a label, a
button, or a hyperlink.
Overall this simplifies a lot of complexity in the code but comes with a
few breaking changes:
* `TextShape::new`, `Shape::galley`, and `Painter::galley` now take a
fallback color by argument
* `Shape::galley_with_color` has been deprecated (use `Shape::galley`
instead)
* `Painter::galley_with_color` has been deprecated (use
`Painter::galley` instead)
* `WidgetTextGalley` is gone (use `Arc<Galley>` instead)
* `WidgetTextJob` is gone (use `LayoutJob` instead)
* `RichText::into_text_job` has been replaced with
`RichText::into_layout_job`
* `WidgetText::into_text_job` has been replaced with
`WidgetText::into_layout_job`
Thanks to `impl From<bool> for Vec2b` one can now shorten some builder
calls, like:
Previous:
```rust
egui::ScrollArea::vertical()
.auto_shrink([false; 2])
```
New:
```rust
egui::ScrollArea::vertical()
.auto_shrink(false)
```
* Add syntax highlighing feature to egui_extras
Enable "syntect" feature for great syntax highlighting of any language.
If not a simple fallback is used that works fine for C++, Rust, Python
* Check --no-default-features of egui_extras on CI
* spelling
* Fix building egui_extras without additional features
* add egui logo to widget gallery
* improve "no image loaders" error message
* rework static URIs to accept `Cow<'static>`
* remove `RetainedImage` from `http_app` in `egui_demo_app`
* hide `RetainedImage` from docs
* use `ui.image`/`Image` over `RawImage`
* remove last remanant of `RawImage`
* remove unused doc link
* add style option to disable image spinners
* use `Into<Image>` instead of `Into<ImageSource>` to allow configuring the underlying image
* propagate `image_options` through `ImageButton`
* calculate image size properly in `Button`
* properly calculate size in `ImageButton`
* Update crates/egui/src/widgets/image.rs
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
* improve no image loaders error message
* add `size()` helper to `TexturePoll`
* try get size from poll in `Button`
* add `paint_at` to `Spinner`
* use `Spinner::paint_at` and hover on image button response
* `show_spinner` -> `show_loading_spinner`
* avoid `allocate_ui` in `Image` when painting spinner
* make icon smaller + remove old texture
* add `load_and_calculate_size` + expose `paint_image_at`
* update `egui_plot` to paint image in the right place
* Add helpers for painting an ImageSource directly
* Use max_size=INF as default
* Use new API in WidgetGallery
* Make egui_demo_app work by default
* Remove Option from scale
* Refactor ImageSize
* Fix docstring
* Small refactor
---------
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
* rework loading around `Arc<Loaders>`
* use `Bytes` instead of splitting api
* remove unwraps in `texture_handle`
* make `FileLoader` optional under `file` feature
* hide http load error stack trace from UI
* implement image fit
* support more image sources
* center spinner if we know size ahead of time
* allocate final size for spinner
* improve image format guessing
* remove `ui.image`, `Image`, add `RawImage`
* deprecate `RetainedImage`
* `image2` -> `image`
* add viewer example
* update `examples/image` + remove `svg` and `download_image` exapmles
* fix lints and tests
* fix doc link
* add image controls to `images` example
* add more `From` str-like types
* add api to forget all images
* fix max size
* do not scale original size unless necessary
* fix doc link
* add more docs for `Image` and `RawImage`
* make paint_at `pub`
* update `ImageButton` to use new `Image` API
* fix double rendering
* `SizeHint::Original` -> `Scale` + remove `Option` wrapper
* Update crates/egui/src/load.rs
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
* remove special `None` value for `forget`
* Update crates/egui/src/load.rs
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
* add more examples to `ui.image` + add `include_image` macro
* Update crates/egui/src/ui.rs
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
* update `menu_image_button` to use `ImageSource`
* `OrderedFloat::get` -> `into_inner`
* derive `Eq` on `SizedTexture`
* add `id` to loaders + `is_installed` check
* move `images` to demo + simplify `images` example
* log trace when installing loaders
* fix lint
* fix doc link
* add more documentation
* more `egui_extras::loaders` docs
* Update examples/images/src/main.rs
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
* update `images` example screenshots + readme
* remove unused `rfd` from `images` example
* Update crates/egui_extras/src/loaders/ehttp_loader.rs
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
* add `must_use` on `Image` and `RawImage`
* document `loaders::install` multiple call safety
* Update crates/egui_extras/Cargo.toml
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
* reshuffle `is_loader_installed`
* make `include_image` produce `ImageSource` + update docs
* update `include_image` docs
* remove `None` mentions from loader `forget`
* inline `From` texture id + size for `SizedTexture`
* add warning about statically known path
* change image load error + use in image button
* add `.size()` to `Image`
* Update crates/egui_demo_app/Cargo.toml
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
* add explanations to image viewer ui
---------
Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
