Orkuncakilkaya
1dad96102a
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>
54 lines
2 KiB
Text
54 lines
2 KiB
Text
# pointer.ludic - the pointer: what it is over is :hover (the element and all around it, as in CSS),
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# a press on a control focuses it and makes it :active, and letting go over it is a click. The
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# control being dragged (a range's thumb, a scrollbar) keeps the pointer until it is let go.
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var fr_hover: []string = new []string
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var fr_press_key: string = ""
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var fr_down_now: bool = false
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function fr_was_hovered(key: string) -> bool { return sel_has(fr_hover, key) }
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function fr_pointer(root: UiNode) -> void {
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let i = in_now
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fr_down_now = i.down
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let keys = new []string
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fr_under(root, i.x, i.y, keys)
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fr_hover = keys
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let hit = fr_hit(root, i.x, i.y)
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if i.down and not in_was_down {
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fr_press_key = ""
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if hit != null {
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fr_press_key = hit.key
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if hit.focusable { ui_focus(hit.key) }
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ct_press(hit, i.x, i.y)
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}
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}
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if i.down and fr_press_key != "" { ct_drag(root, fr_press_key, i.x, i.y) }
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if not i.down and in_was_down {
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if hit != null and hit.key == fr_press_key and hit.enabled { ct_activate(hit) }
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fr_press_key = ""
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}
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}
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function fr_under(n: UiNode, px: float, py: float, keys: []string) -> void {
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if px < n.x or py < n.y or px >= n.x + n.cw or py >= n.y + n.ch { return }
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if n.key != "" { push(keys, n.key) }
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for i in 0 .. len(n.children) { fr_under(n.children[i], px, py, keys) }
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}
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# the deepest control (or pressable element) under the pointer
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function fr_hit(n: UiNode, px: float, py: float) -> UiNode {
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if px < n.x or py < n.y or px >= n.x + n.cw or py >= n.y + n.ch { return null }
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var i = len(n.children) - 1
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while i >= 0 {
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let h = fr_hit(n.children[i], px, py)
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if h != null { return h }
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i -= 1
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}
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if n.focusable or n.act != null { return n }
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return null
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}
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export function ui_hit(root: UiNode, px: float, py: float) -> UiNode { return fr_hit(root, px, py) }
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function fr_node(n: UiNode, key: string) -> UiNode {
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if n.key == key { return n }
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for i in 0 .. len(n.children) {
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let f = fr_node(n.children[i], key)
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if f != null { return f }
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}
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return null
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}
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