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>
79 lines
2.1 KiB
Go
79 lines
2.1 KiB
Go
package game
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import (
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"fmt"
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"math"
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"strconv"
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"strings"
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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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// Bearing marks a direction on a compass, in degrees.
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type Bearing struct {
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Degrees float64
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Slot pixel.Slot
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}
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type CompassOptions struct {
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// Width is in dots; zero means 120. It shows 180°.
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Width int
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}
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// Compass is a heading strip with letters and markers.
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func Compass(c *ui.Context, text string, heading float64, marks []Bearing, o CompassOptions) ui.Element {
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k := pixel.K(c)
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for _, v := range append([]float64{heading}, bearings(marks)...) {
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if math.IsNaN(v) || math.IsInf(v, 0) {
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panic(fmt.Sprintf("game: Compass bearing %v", v))
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}
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}
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w := pixel.Or("Compass Width", o.Width, 120)
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letters := strings.Fields(k.Msg("compass"))
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heading = math.Mod(math.Mod(heading, 360)+360, 360)
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// x places bearing b; false means off the strip.
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x := func(b float64) (int, bool) {
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d := math.Mod(math.Mod(b-heading, 360)+540, 360) - 180
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return w/2 + int(math.Round(d*float64(w)/180)), d >= -90 && d <= 90
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}
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top := tagH(letters[0]) + 3
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return ui.Box(c).Role(ui.RoleImage).Label(text).Description(strconv.Itoa(int(math.Round(heading)))+"°").Size(k.D(w), k.D(top+10)).Draw(func(p *ui.Painter, r ui.Rect) {
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g := k.Canvas(p, r)
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g.Frame(0, top, w, 10, pixel.Sunken, pixel.Well)
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for b := 0; b < 360; b += 15 {
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at, ok := x(float64(b))
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if !ok || at < 1 || at > w-2 {
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continue
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}
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tall := 3
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if b%45 == 0 {
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tall = 6
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}
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g.VLine(at, top+10-1-tall, tall, pixel.Edge)
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if b%90 == 0 {
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l := letters[b/90]
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tag(g, max(0, min(w-tagW(l), at-tagW(l)/2)), 0, l, pixel.Ink)
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}
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}
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for _, m := range marks {
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if at, ok := x(m.Degrees); ok {
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g.Rect(max(1, min(w-4, at-1)), top+2, 3, 3, m.Slot)
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}
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}
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// The heading's own mark points down at the middle.
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g.Rect(w/2-2, top-1, 5, 1, pixel.Accent)
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g.Rect(w/2-1, top, 3, 1, pixel.Accent)
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g.Dot(w/2, top+1, pixel.Accent)
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})
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}
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func bearings(marks []Bearing) []float64 {
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out := make([]float64, len(marks))
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for i, m := range marks {
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out[i] = m.Degrees
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}
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return out
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}
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