ZacharyZhang-NYandClaude Opus 5.5
03e1f91706
Elements are now pass-scoped value handles: tests that read bounds after a frame bind a ui.Handle. pixel tells frames apart by the build pass's root, since the Tester clock no longer moves on its own. Fix the regressions the upgrade brought: - Clipboard reads in input handlers go through c.Services(). - MyGo notes an overlay's opener after building it, so AutoFocus inside lost it; pixel.AutoFocus focuses through a Handle, and archtest bans the raw call. Dialogs hand the focus back again. - Elements around a press stay hovered: Tooltip tells a press-given focus by focus arriving under the pointer. - The web host moves the Tester clock with real time, at most 500 ms a call, and gives components the real clock. The gallery's source index also accepts CRLF checkouts. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
55 lines
1.5 KiB
Go
55 lines
1.5 KiB
Go
package chart
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import (
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"math"
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"github.com/egoist/mygo/ui"
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"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
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)
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type HistogramOptions struct {
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// Bins is roughly how many, zero for 8; edges round.
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Bins int
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// Width and Height are dots; zeros mean 160 by 80.
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Width, Height int
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Slot pixel.Slot
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}
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// Histogram counts values into bins, side by side.
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func Histogram(c *ui.Context, text string, values []float64, o HistogramOptions) ui.Element {
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k := pixel.K(c)
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n := pixel.Or("Histogram Bins", o.Bins, 8)
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w, h := size("Histogram", o.Width, o.Height, 160, 80)
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if len(values) == 0 {
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panic("chart: Histogram has no values")
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}
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lo, hi := span(values)
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// A lone value gets a bin sized to itself.
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run := hi - lo
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if run == 0 {
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run = max(math.Abs(lo), 1)
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}
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step := nice(run / float64(n))
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from := math.Floor(lo/step) * step
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bins := int((hi-from)/step) + 1
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counts, labels := make([]float64, bins), make([]string, bins)
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for _, v := range values {
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counts[int((v-from)/step)]++
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}
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for i := range bins {
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labels[i] = tick(from+float64(i)*step, step)
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}
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_, top := span(counts)
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p := fit(0, top, w, h, labels)
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ink := pick(o.Slot, 0)
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return ui.Box(c).Size(k.D(w), k.D(h)).Role(ui.RoleImage).Label(text).Description(read(labels, counts)).Draw(func(pt *ui.Painter, r ui.Rect) {
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g := k.Canvas(pt, r)
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p.grid(g, labels)
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for i, v := range counts {
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x0, x1 := p.x+i*p.w/bins, p.x+(i+1)*p.w/bins
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g.Rect(x0, p.at(v), x1-x0-1, p.at(0)-p.at(v), ink)
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}
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})
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}
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