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feat(ui): ludic.ui is a UI framework - input, controls, render3d backend, the CSS a game needs

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A game no longer writes a host:
- The runtime reads Input itself: focus and keyboard navigation (Tab, arrows, Enter/Space,
  autofocus), the pointer (hover, :active, click on release, drag), and scroll boxes with the
  wheel, a draggable scrollbar, clipping and scroll-into-view.
- HTML's controls are built in (button, checkbox, radio, range, select, text, key capture), made
  of plain parts a stylesheet styles, each reporting with on-change and event.value.
- ludic.ui/render3d.ludic draws with render3d's overlay: textures, named atlases (icon:NAME),
  nine-slice border-image, rounded rects and rings, clipping, and a scale.
- Hooks for the program's language, sounds and clock (ui_translator, ui_sounds, ui_clock).
- ui_dev: hot reload, errors on screen, LUDIC_UI_DUMP.
- CSS:
  - colours as #rgb / #rrggbbaa / rgb() / rgba() / names;
  - border-radius and outline (following the radius), box-shadow, background-image and a tinted
    border-image;
  - group opacity, @keyframes / animation, transition;
  - :focus, :focus-visible and :focus-within.
- HTML mixed content, and boolean attributes.
- render3d gains tex_width / tex_height, and the XML reader keeps text runs in order.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-09-24 17:26:09 +03:00
parent 20d011f8e9
commit 1dad96102a
45 changed files with 1386 additions and 218 deletions
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2
tools/ludic-cli/test.ludic
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@ -757,6 +757,8 @@ function cmd_dev_test() -> int {
controller_case("library/ui_reload", "", "ui: templates reloaded note 1 | reloaded 0 then 1 | note again 1", "ui_reload.ludic (L11: a template changed on disk is read again, and its state kept)")
controller_case("library/ui_component", "", "counters|a: 1 (2)|+|reset|b: 10 (20) big|+|reset|outside| b margin 9; b text 16711680; outside -1; button 30 b: 0 (0)", "ui_component.ludic (L11: components as NAME.ludic + .xml + .lss - props, state, fields, events, scoped styles, @import, class passed down)")
reject_case("rejected/component_no_template", "there is no Lonely.xml beside it", "a component needs its template beside it")
controller_case("library/ui_controls", "", "1 false 7 2 Adalove 70 1 false 8 2 Adalove 70; scrolled 40", "ui_controls.ludic (L11: focus and keys, the built-in controls, a range dragged, a box scrolled)")
controller_case("library/ui_anim", "", "0 100 100 | 49 50 100 | 100 100 61", "ui_anim.ludic (L11: @keyframes and animation, looping and alternating, and a transition)")
reject_case("rejected/view_untyped", "view Sums: say what type total is", "a view field that is not a bare global says its type")
reject_case("rejected/view_without_ui", "a view is shown by ludic.ui", "a view needs ludic.ui to show it")