Files
8bitMyGoUI/chart/pyramid.go
T
ZacharyZhang-NYandClaude Opus 5.5 03e1f91706 Upgrade MyGo to v0.5.5
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>
2026-10-17 01:31:08 -04:00

49 lines
1.7 KiB
Go

package chart
import (
"fmt"
"github.com/egoist/mygo/ui"
"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
)
type PyramidOptions struct {
// Width is in dots, zero means 200; rows are lines.
Width int
}
// Pyramid sets two series back to back by group.
func Pyramid(c *ui.Context, text string, groups []string, left, right Series, o PyramidOptions) ui.Element {
k := pixel.K(c)
if len(left.Values) != len(groups) || len(right.Values) != len(groups) {
panic(fmt.Sprintf("chart: Pyramid has %d groups for %d and %d values", len(groups), len(left.Values), len(right.Values)))
}
w := pixel.Or("Pyramid Width", o.Width, 200)
lo, hi := span(left.Values, right.Values)
if lo < 0 {
panic(fmt.Sprintf("chart: Pyramid value %v is negative", lo))
}
mid := 0
for _, g := range groups {
mid = max(mid, pixel.Measure(g)+12)
}
lslot, rslot := pick(left.Slot, 1), pick(right.Slot, 0)
head := pixel.LineHeight
return ui.Box(c).Size(k.D(w), k.D(head+len(groups)*pixel.LineHeight)).Role(ui.RoleImage).Label(text).
Description(left.Name + ": " + read(groups, left.Values) + "; " + right.Name + ": " + read(groups, right.Values)).Draw(func(p *ui.Painter, r ui.Rect) {
g := k.Canvas(p, r)
reach := (w - mid) / 2
cx := reach + mid/2
g.Text(0, 0, left.Name, lslot, 1)
g.Text(w-pixel.Measure(right.Name), 0, right.Name, rslot, 1)
for i, name := range groups {
y := head + i*pixel.LineHeight
g.Text(cx-pixel.Measure(name)/2, y, name, pixel.Faint, 1)
lw, rw := int(part(left.Values[i], hi)*float64(reach)), int(part(right.Values[i], hi)*float64(reach))
g.Rect(reach-lw, y+4, lw, pixel.LineHeight-8, lslot)
g.Rect(reach+mid, y+4, rw, pixel.LineHeight-8, rslot)
}
})
}