ZacharyZhang-NY
b4b4d67b92
A cross-cutting pass, each fix with a test that failed first. Veils: MyGo still hands a key to a base that turned off this frame, so every element key now goes through pixel.Shortcut, which an archtest enforces. Input handlers record and the build applies them only while enabled; the editor turns away a veil-frame letter or copy; value bases get a copy and keep only enabled turns. Popups give a held focus back to their opener when the veil lifts. Motion: S5 is enforced at the clock. Every Tick, Since, Step, Toward and Shot runs at 4-15 fps; blinks keep 1 Hz on 4 fps steps, fast animations step at 15, and drawn time is quantized to frames. Clocks stepping back: Since holds at zero without overflow, and k.Elapsed moves a stored start to now, so nothing goes negative, runs backward or indexes out of range. Also: logs count typed text instead of holding it, gallery names use glyphs the font has, removable rows are keyed, components take their own Options (archtest), and sweeps over all 508 demos check veiled keys, clicks, wheels, the clock stepping back and names.
108 lines
2.4 KiB
Go
108 lines
2.4 KiB
Go
package text
|
||
|
||
import (
|
||
"fmt"
|
||
"log/slog"
|
||
|
||
"github.com/egoist/mygo/ui"
|
||
|
||
"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
|
||
)
|
||
|
||
var more = pixel.MustSprite(`
|
||
#####
|
||
.###.
|
||
..#..
|
||
`)
|
||
|
||
type TypewriterOptions struct {
|
||
// CPS is characters per second; zero means 20.
|
||
CPS int
|
||
Slot pixel.Slot
|
||
Disabled bool
|
||
}
|
||
|
||
type TypewriterResult struct {
|
||
Element *ui.Element
|
||
// Done is true in the frame the whole text shows.
|
||
Done bool
|
||
}
|
||
|
||
type typeKey struct{}
|
||
|
||
type typeState struct {
|
||
text string
|
||
start, last int
|
||
done bool
|
||
}
|
||
|
||
// Typewriter reveals s; a click or Enter shows the rest.
|
||
func Typewriter(c *ui.Context, s string, o TypewriterOptions) TypewriterResult {
|
||
k := pixel.K(c)
|
||
cps := pixel.Or("Typewriter CPS", o.CPS, 20)
|
||
if cps > 1000 {
|
||
panic(fmt.Sprintf("text: Typewriter CPS %d over 1000", cps))
|
||
}
|
||
// S5 steps at 4–15 fps; fast typing shows more.
|
||
fps := max(4, min(cps, 15))
|
||
shell, base, st := pixel.Shell(c, func() *ui.Element {
|
||
e := ui.Box(c).Role(ui.RoleText).Label(s).Disabled(o.Disabled)
|
||
if !o.Disabled {
|
||
e.Focusable()
|
||
}
|
||
return e
|
||
})
|
||
ts := ui.Local(shell, typeKey{}, func() typeState { return typeState{start: -1} })
|
||
if ts.text != s {
|
||
*ts = typeState{text: s, start: -1}
|
||
}
|
||
// Lines leave room for the mark; glyphs count, not runes.
|
||
w, check := pixel.WrapWidth(c, shell)
|
||
lines := pixel.Wrap(s, max(0, w-8), 0)
|
||
total := 0
|
||
for _, l := range lines {
|
||
total += len([]rune(l))
|
||
}
|
||
res := TypewriterResult{Element: shell}
|
||
if !ts.done {
|
||
ts.last = total
|
||
if !k.Reduce() {
|
||
tick := k.Tick(c, fps)
|
||
if ts.start < 0 {
|
||
ts.start = tick
|
||
}
|
||
ts.last = min(total, (tick-ts.start)*cps/fps)
|
||
}
|
||
if base.Clicked() {
|
||
ts.last = total
|
||
}
|
||
if ts.last == total {
|
||
ts.done, res.Done = true, true
|
||
slog.Debug("8bit: typewriter done", "glyphs", total)
|
||
}
|
||
}
|
||
shown := ts.last
|
||
if ts.done {
|
||
shown = total
|
||
}
|
||
shell.FillWidth().Height(k.D(len(lines) * pixel.LineHeight)).Draw(func(p *ui.Painter, r ui.Rect) {
|
||
check(r)
|
||
g := k.Canvas(p, r)
|
||
left, end := shown, 0
|
||
for i, l := range lines {
|
||
lr := []rune(l)
|
||
n := min(len(lr), max(0, left))
|
||
g.Text(0, i*pixel.LineHeight, string(lr[:n]), o.Slot, 1)
|
||
left -= len(lr)
|
||
end = pixel.Measure(string(lr[:n]))
|
||
}
|
||
if shown == total && g.Step(4)%4 < 2 {
|
||
g.Sprite(end+3, len(lines)*pixel.LineHeight-6, more, 0, pixel.Accent, 1)
|
||
}
|
||
if st.Focus {
|
||
g.FocusMark(0, 0, g.W, g.H)
|
||
}
|
||
})
|
||
return res
|
||
}
|