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**Ready for review. Examples migration progress: 100%.** # Objective - Implement https://github.com/bevyengine/bevy/discussions/15014 ## Solution This implements [cart's proposal](https://github.com/bevyengine/bevy/discussions/15014#discussioncomment-10574459) faithfully except for one change. I separated `TextSpan` from `TextSpan2d` because `TextSpan` needs to require the `GhostNode` component, which is a `bevy_ui` component only usable by UI. Extra changes: - Added `EntityCommands::commands_mut` that returns a mutable reference. This is a blocker for extension methods that return something other than `self`. Note that `sickle_ui`'s `UiBuilder::commands` returns a mutable reference for this reason. ## Testing - [x] Text examples all work. --- ## Showcase TODO: showcase-worthy ## Migration Guide TODO: very breaking ### Accessing text spans by index Text sections are now text sections on different entities in a hierarchy, Use the new `TextReader` and `TextWriter` system parameters to access spans by index. Before: ```rust fn refresh_text(mut query: Query<&mut Text, With<TimeText>>, time: Res<Time>) { let text = query.single_mut(); text.sections[1].value = format_time(time.elapsed()); } ``` After: ```rust fn refresh_text( query: Query<Entity, With<TimeText>>, mut writer: UiTextWriter, time: Res<Time> ) { let entity = query.single(); *writer.text(entity, 1) = format_time(time.elapsed()); } ``` ### Iterating text spans Text spans are now entities in a hierarchy, so the new `UiTextReader` and `UiTextWriter` system parameters provide ways to iterate that hierarchy. The `UiTextReader::iter` method will give you a normal iterator over spans, and `UiTextWriter::for_each` lets you visit each of the spans. --------- Co-authored-by: ickshonpe <david.curthoys@googlemail.com> Co-authored-by: Carter Anderson <mcanders1@gmail.com> |
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| .. | ||
| 3d_scene.rs | ||
| 3d_shapes.rs | ||
| 3d_viewport_to_world.rs | ||
| animated_material.rs | ||
| anisotropy.rs | ||
| anti_aliasing.rs | ||
| atmospheric_fog.rs | ||
| auto_exposure.rs | ||
| blend_modes.rs | ||
| bloom_3d.rs | ||
| camera_sub_view.rs | ||
| clearcoat.rs | ||
| color_grading.rs | ||
| deferred_rendering.rs | ||
| depth_of_field.rs | ||
| fog.rs | ||
| fog_volumes.rs | ||
| generate_custom_mesh.rs | ||
| irradiance_volumes.rs | ||
| lighting.rs | ||
| lightmaps.rs | ||
| lines.rs | ||
| load_gltf.rs | ||
| load_gltf_extras.rs | ||
| meshlet.rs | ||
| motion_blur.rs | ||
| order_independent_transparency.rs | ||
| orthographic.rs | ||
| parallax_mapping.rs | ||
| parenting.rs | ||
| pbr.rs | ||
| pcss.rs | ||
| post_processing.rs | ||
| query_gltf_primitives.rs | ||
| reflection_probes.rs | ||
| render_to_texture.rs | ||
| rotate_environment_map.rs | ||
| scrolling_fog.rs | ||
| shadow_biases.rs | ||
| shadow_caster_receiver.rs | ||
| skybox.rs | ||
| spherical_area_lights.rs | ||
| split_screen.rs | ||
| spotlight.rs | ||
| ssao.rs | ||
| ssr.rs | ||
| texture.rs | ||
| tonemapping.rs | ||
| transmission.rs | ||
| transparency_3d.rs | ||
| two_passes.rs | ||
| update_gltf_scene.rs | ||
| vertex_colors.rs | ||
| visibility_range.rs | ||
| volumetric_fog.rs | ||
| wireframe.rs | ||