ZacharyZhang-NYandClaude Opus 5.5
4efaf2680f
Stack through StickyHeader, with behavior tests and gallery demos. kit gains Arrive, Settle (paint-time layout check) and Shade. Several actions return named ui.Element results; mygo vet forbids elements in structs. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
76 lines
2.0 KiB
Go
76 lines
2.0 KiB
Go
package layout
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import (
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"git.zacharyzhang.com/ZacharyZhang-NY/CrychicUI/kit"
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"git.zacharyzhang.com/ZacharyZhang-NY/CrychicUI/sound"
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"github.com/egoist/mygo/ui"
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)
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const minPane = 40
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// SplitPane sets two panes side by side; *size is width.
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func SplitPane(c *ui.Context, size *float32, first, second func()) ui.Element {
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return split(c, "SplitPane", false, size, first, second)
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}
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// split lays out two panes around a draggable handle.
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func split(c *ui.Context, name string, vertical bool, size *float32, first, second func()) ui.Element {
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if size == nil || !finite(*size) || *size < 0 {
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panic("layout: " + name + " needs a finite, non-negative size")
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}
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t := c.Theme()
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grip := t.Space(2)
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var root ui.Element
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var room float32
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pane, cursor := func(e ui.Element, v float32) ui.Element { return e.Width(v).ClipX() }, ui.CursorResizeEW
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if vertical {
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root = ui.Column(c)
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room = root.LayoutBounds().H
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pane, cursor = func(e ui.Element, v float32) ui.Element { return e.Height(v).ClipY() }, ui.CursorResizeNS
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} else {
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root = ui.Row(c)
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room = root.LayoutBounds().W
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}
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return root.Fill().AlignItems(ui.Stretch).Children(func() {
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pane(ui.Column(c), *size).Children(first)
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handle := ui.Box(c).Cursor(cursor).Center().Label("Divider")
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if vertical {
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handle.Height(grip)
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} else {
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handle.Width(grip)
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}
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dx, dy, moved := handle.Dragged()
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active := handle.Hovered() || handle.Dragging()
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color := t.Border
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if active {
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color = t.Accent
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}
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line := ui.Box(c)
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if vertical {
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line.FillWidth().Height(1)
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} else {
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line.FillHeight().Width(1)
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}
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handle.Children(func() { line.Background(line.AnimateColor("line", color, ui.Snappy)) })
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if moved {
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d := dx
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if vertical {
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d = dy
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}
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next := max(minPane, *size+d)
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if room > 0 {
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next = min(next, max(minPane, room-grip-minPane))
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}
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if next != *size {
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*size = next
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root.SetChanged()
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}
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}
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if _, _, ended := handle.DragEnded(); ended {
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sound.Play(sound.Tick)
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kit.Log(name, "resized", "size", *size)
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}
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ui.Column(c).Grow(1).Basis(0).Children(second)
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})
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}
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