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feat(ui): pointer events for natives and elements, with capture; on-down and on-up; hits in painting order

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-09-24 21:48:02 +03:00
parent d2b0413c30
commit 0aad2294ec
20 changed files with 349 additions and 46 deletions
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43
packages/ludic.ui/pointer.ludic
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@ -4,6 +4,7 @@
var fr_hover: []string = new []string
var fr_press_key: string = ""
var fr_down_now: bool = false
var fr_key_press: string = "" # the control Enter or the pad's A is holding down
function fr_was_hovered(key: string) -> bool { return sel_has(fr_hover, key) }
function fr_pointer(root: UiNode) -> void {
let i = in_now
@ -18,40 +19,44 @@ function fr_pointer(root: UiNode) -> void {
if top != null and pp_pointer(top) { return }
if sc_drag != "" { return }
let hit = fr_hit(scope, i.x, i.y)
if i.down and not in_was_down {
ct_key_pressed_away(hit)
fr_press_key = ""
if hit != null {
fr_press_key = hit.key
if hit.focusable { ui_focus(hit.key) }
ct_press(hit, i.x, i.y)
}
}
pe_frame(root, scope)
if i.down and not in_was_down { fr_press(hit, i.x, i.y) }
if i.down and fr_press_key != "" { ct_drag(root, fr_press_key, i.x, i.y) }
if not i.down and in_was_down {
let was = fr_node(root, fr_press_key)
if was != null { ui_fire(was, "up", Value.null()) }
if hit != null and hit.key == fr_press_key and hit.enabled { ct_activate(hit) }
fr_press_key = ""
}
}
function fr_press(hit: UiNode, x: float, y: float) -> void {
ct_key_pressed_away(hit)
fr_press_key = ""
if hit == null { return }
fr_press_key = hit.key
if hit.focusable { ui_focus(hit.key) }
if hit.enabled { ui_fire(hit, "down", Value.null()) }
ct_press(hit, x, y)
}
# :active - the press began on it, or inside it, and is still held (by the pointer, Enter or A)
function fr_active(n: UiNode) -> bool {
if fr_down_now and fr_press_key != "" and lc_mine(fr_press_key, n.key) { return true }
if pe_key != "" and lc_mine(pe_key, n.key) { return true }
return fr_key_press != "" and lc_mine(fr_key_press, n.key)
}
function fr_under(n: UiNode, px: float, py: float, keys: []string) -> void {
if px < n.x or py < n.y or px >= n.x + n.cw or py >= n.y + n.ch { return }
if n.key != "" { push(keys, n.key) }
for i in 0 .. len(n.children) { fr_under(n.children[i], px, py, keys) }
}
# the deepest control (or pressable element) under the pointer
# the control (or pressable element) the pointer is on: out from the topmost element under it
function fr_hit(n: UiNode, px: float, py: float) -> UiNode {
if px < n.x or py < n.y or px >= n.x + n.cw or py >= n.y + n.ch { return null }
var i = len(n.children) - 1
while i >= 0 {
let h = fr_hit(n.children[i], px, py)
if h != null { return h }
i -= 1
}
if n.focusable or n.act != null { return n }
return null
if not fr_in(n, px, py) { return null }
return fr_pick(n, px, py, PK_CONTROL)
}
export function ui_hit(root: UiNode, px: float, py: float) -> UiNode { return fr_hit(root, px, py) }
function fr_node(n: UiNode, key: string) -> UiNode {
if key == "" { return null }
if n.key == key { return n }
for i in 0 .. len(n.children) {
let f = fr_node(n.children[i], key)