fix(deps): update rust crate egui28 to 0.29

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This PR contains the following updates:

Package	Type	Update	Change
egui28	dependencies	minor	0.28 -> 0.29

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Release Notes

emilk/egui (egui28)

v0.29.1

Compare Source

• Remove debug-assert triggered by with_layer_id/dnd_drag_source #​5191 by @​emilk
• Fix id clash in Ui::response #​5192 by @​emilk
• Do not round panel rectangles to pixel grid #​5196 by @​emilk

v0.29.0

Compare Source

✨ Highlights

This release adds initial support for multi-pass layout, which is a tool to circumvent a common limitation of immediate mode.
You can use the new UiBuilder::sizing_pass (#​4969) to instruct the Ui and widgets to shrink to their minimum size, then store that size.
Then call the new Context::request_discard (#​5059) to discard the visual output and do another pass immediately after the current finishes.
Together, this allows more advanced layouts that is normally not possible in immediate mode.
So far this is only used by egui::Grid to hide the "first-frame jitters" that would sometimes happen before, but 3rd party libraries can also use it to do much more advanced things.

There is also a new UiBuilder for more flexible construction of Uis (#​4969).
By specifying a sense for the Ui you can make it respond to clicks and drags, reading the result with the new Ui::response (#​5054).
Among other things, you can use this to create buttons that contain arbitrary widgets.

0.29 also adds improve support for automatic switching between light and dark mode.
You can now set up a custom Style for both dark and light mode, and have egui follow the system preference (#​4744 #​4860).

There also has been several small improvements to the look of egui:

• Fix vertical centering of text (e.g. in buttons) (#​5117)
• Sharper rendering of lines and outlines (#​4943)
• Nicer looking text selection, especially in light mode (#​5017)

The new text selection

What text selection used to look like

🧳 Migration

• id_source is now called id_salt everywhere (#​5025)
• Ui::new now takes a UiBuilder (#​4969)
• Deprecated (replaced with UiBuilder):
  • ui.add_visible_ui
  • ui.allocate_ui_at_rect
  • ui.child_ui
  • ui.child_ui_with_id_source
  • ui.push_stack_info

⭐ Added

• Create a UiBuilder for building Uis #​4969 by @​emilk
• Add egui::Sides for adding UI on left and right sides #​5036 by @​emilk
• Make light & dark visuals customizable when following the system theme #​4744 #​4860 by @​bash
• Interactive Ui:s: add UiBuilder::sense and Ui::response #​5054 by @​lucasmerlin
• Add a menu button with text and image #​4748 by @​NicolasBircksZR
• Add Ui::columns_const() #​4764 by @​v0x0g
• Add Slider::max_decimals_opt #​4953 by @​bircni
• Add Label::halign #​4975 by @​rustbasic
• Add ui.shrink_clip_rect #​5068 by @​emilk
• Add ScrollArea::scroll_bar_rect #​5070 by @​emilk
• Add Options::input_options for click-delay etc #​4942 by @​girtsf
• Add WidgetType::RadioGroup #​5081 by @​bash
• Add return value to with_accessibility_parent #​5083 by @​bash
• Add Ui::with_visual_transform #​5055 by @​lucasmerlin
• Make Slider and DragValue compatible with NonZeroUsize etc #​5105 by @​emilk
• Add Context::request_discard for multi-pass layouts #​5059 by @​emilk
• Add UI to modify FontTweak live #​5125 by @​emilk
• Add Response::intrinsic_size to enable better layout in 3rd party crates #​5082 by @​lucasmerlin
• Add support for mipmap textures #​5146 by @​nolanderc
• Add DebugOptions::show_unaligned #​5165 by @​emilk
• Add Slider::clamping for precise clamp control #​5119 by @​emilk

🚀 Performance

• Optimize Color32::from_rgba_unmultiplied with LUT #​5088 by @​YgorSouza

🔧 Changed

• Rename id_source to id_salt #​5025 by @​bircni
• Avoid some Id clashes by seeding auto-ids with child id #​4840 by @​ironpeak
• Nicer looking text selection, especially in light mode #​5017 by @​emilk
• Fix blurry lines by aligning to pixel grid #​4943 by @​juancampa
• Center-align all text vertically #​5117 by @​emilk
• Clamp margin values in Margin::ui #​4873 by @​rustbasic
• Make scroll_to_* animations configurable #​4305 by @​lucasmerlin
• Update Button to correctly align contained image #​4891 by @​PrimmR
• Deprecate ahash re-exports #​4979 by @​oscargus
• Fix: Ensures correct IME behavior when the text input area gains or loses focus #​4896 by @​rustbasic
• Enable rustdoc generate-link-to-definition feature on docs.rs #​5030 by @​GuillaumeGomez
• Make some Memory methods public #​5046 by @​bircni
• Deprecate ui.set_sizing_pass #​5074 by @​emilk
• Export module egui::frame #​5087 by @​simgt
• Use log crate instead of eprintln & remove some unwraps #​5010 by @​bircni
• Fix: Event::Copy and Event::Cut behave as if they select the entire text when there is no selection #​5115 by @​rustbasic

🐛 Fixed

• Prevent text shrinking in tooltips; round wrap-width to integer #​5161 by @​emilk
• Fix bug causing tooltips with dynamic content to shrink #​5168 by @​emilk
• Remove some debug asserts #​4826 by @​emilk
• Handle the IME event first in TextEdit to fix some bugs #​4794 by @​rustbasic
• Slider: round to decimals after applying step_by #​4822 by @​AurevoirXavier
• Fix: hint text follows the alignment set on the TextEdit #​4889 by @​PrimmR
• Request focus on a TextEdit when clicked #​4991 by @​Zoxc
• Fix Id clash in Frame styling widget #​4967 by @​YgorSouza
• Prevent ScrollArea contents from exceeding the container size #​5006 by @​DouglasDwyer
• Fix bug in size calculation of truncated text #​5076 by @​emilk
• Fix: Make sure RawInput::take clears all events, like it says it does #​5104 by @​emilk
• Fix DragValue range clamping #​5118 by @​emilk
• Fix: panic when dragging window between monitors of different pixels_per_point #​4868 by @​rustbasic

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