Orkuncakilkaya
19fcf60599
ludic migrate state packages <every example program> packages/ludic.lab/example/plate.ludic 1804 vars into 126 states, 64 into lets; 23498 edits in 460 files Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
86 lines
2.8 KiB
Text
86 lines
2.8 KiB
Text
# layout_box.ludic - a box's content measured: its children in a line along its direction (a
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# row's text wrapped into the room its siblings leave), or a wrapping row's lines
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function ly_measure_box(ui_st: mut UiState, n: UiNode, inner: float) -> void {
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for i in 0 .. len(n.children) {
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ui_st.ly_fg_a = n.rfg_a
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ly_measure(ui_st, n.children[i], inner, n.rsize, n.rfg)
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}
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if n.dir == UI_ROW and inner > 0.0 { ly_row_fit(ui_st, n, inner) }
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var main = 0.0
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var cross = 0.0
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var count = 0
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for i in 0 .. len(n.children) {
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let c = n.children[i]
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if c.pos < 2 {
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main = main + ly_main(c, n.dir)
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if count > 0 { main = main + n.gap }
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cross = Math.max(cross, ly_cross(c, n.dir))
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count += 1
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}
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}
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if n.dir == UI_ROW {
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n.mw = n.mw + main
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n.mh = n.mh + cross
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} else {
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n.mw = n.mw + cross
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n.mh = n.mh + main
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}
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}
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# a row wider than its room: its texts (and boxes of their own width) measured again in the room the
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# rest leave them, each giving up a share of the excess as wide as it is, so a line wraps beside an icon
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function ly_row_fit(ui_st: mut UiState, n: UiNode, inner: float) -> void {
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var used = 0.0
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var flex = 0.0
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var count = 0
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for i in 0 .. len(n.children) {
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let c = n.children[i]
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if c.pos >= 2 { continue }
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if count > 0 { used = used + n.gap }
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used = used + ly_main(c, UI_ROW)
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if ly_flexes(c) { flex = flex + ly_main(c, UI_ROW) }
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count += 1
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}
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let over = used - inner
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if over <= 0.0 or flex <= 0.0 { return }
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for i in 0 .. len(n.children) {
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let c = n.children[i]
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let share = ly_main(c, UI_ROW) - over * ly_main(c, UI_ROW) / flex
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if ly_flexes(c) and share > 0.0 {
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ui_st.ly_fg_a = n.rfg_a
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ly_measure(ui_st, c, share, n.rsize, n.rfg)
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}
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}
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}
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function ly_flexes(c: UiNode) -> bool {
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if c.pos >= 2 or c.w >= 0.0 or c.w_pct > 0.0 { return false }
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if c.kind == UI_TEXT { return not c.nowrap }
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return c.kind == UI_BOX and c.children != null and len(c.children) > 0
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}
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# a wrapping row: children in lines no wider than `inner`, the lines stacked `gap` apart
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function ly_measure_wrap(ui_st: mut UiState, n: UiNode, inner: float) -> void {
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var line_w = 0.0
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var line_h = 0.0
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var widest = 0.0
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var total = 0.0
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var count = 0
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for i in 0 .. len(n.children) {
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let c = n.children[i]
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ui_st.ly_fg_a = n.rfg_a
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ly_measure(ui_st, c, inner, n.rsize, n.rfg)
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if c.pos >= 2 { continue }
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let cw = ly_main(c, UI_ROW)
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if count > 0 and line_w + n.gap + cw > inner {
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widest = Math.max(widest, line_w)
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total = total + line_h + n.gap
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line_w = 0.0
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line_h = 0.0
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count = 0
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}
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if count > 0 { line_w = line_w + n.gap }
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line_w = line_w + cw
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line_h = Math.max(line_h, ly_cross(c, UI_ROW))
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count += 1
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}
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n.mw = n.mw + Math.max(widest, line_w)
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n.mh = n.mh + total + line_h
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}
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