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>
84 lines
2.3 KiB
Go
84 lines
2.3 KiB
Go
package layout
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import (
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"fmt"
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"log/slog"
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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 ResizableOptions struct {
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// MinW and MinH are zero for 24.
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MinW, MinH int
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// MaxW and MaxH are zero for no limit.
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MaxW, MaxH int
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Label string
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Disabled bool
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}
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type ResizableResult struct {
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Element ui.Element
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Changed bool
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}
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// Resizable is a *w×*h dot box with a ◢ grip.
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func Resizable(c *ui.Context, w, h *int, o ResizableOptions, children func()) ResizableResult {
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k := pixel.K(c)
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minW, minH := pixel.Or("Resizable MinW", o.MinW, 24), pixel.Or("Resizable MinH", o.MinH, 24)
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maxW, maxH := pixel.Or("Resizable MaxW", o.MaxW, 0), pixel.Or("Resizable MaxH", o.MaxH, 0)
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if maxW > 0 && maxW < minW || maxH > 0 && maxH < minH {
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panic(fmt.Sprintf("layout: Resizable max %d×%d under min %d×%d", maxW, maxH, minW, minH))
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}
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clamp := func(v, lo, hi int) int {
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if hi > 0 {
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v = min(v, hi)
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}
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return max(v, lo)
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}
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was := [2]int{*w, *h}
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e := ui.Box(c).Clip()
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e.Children(func() {
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children()
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shell, base, st := pixel.Shell(c, func() ui.Element {
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return ui.Box(c).Focusable().Role(ui.RoleSplitter).Label(label(k, o.Label, "resize")).Disabled(o.Disabled).Cursor(ui.CursorResizeNWSE)
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})
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if dx, dy, ok := drag(k, base); ok {
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*w, *h = *w+dx, *h+dy
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}
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for key, d := range map[ui.Key][2]int{ui.KeyLeft: {-4, 0}, ui.KeyRight: {4, 0}, ui.KeyUp: {0, -4}, ui.KeyDown: {0, 4}} {
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if !o.Disabled && pixel.Shortcut(base, 0, key) {
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*w, *h = *w+d[0], *h+d[1]
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}
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}
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shell.Absolute().Right(0).Bottom(0).Size(k.D(9), k.D(9)).Draw(func(p *ui.Painter, r ui.Rect) { corner(k.Canvas(p, r), st) })
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})
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*w, *h = clamp(*w, minW, maxW), clamp(*h, minH, maxH)
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e.Size(k.D(*w), k.D(*h))
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res := ResizableResult{Element: e, Changed: [2]int{*w, *h} != was}
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if res.Changed {
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slog.Debug("8bit: resizable", "w", *w, "h", *h)
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}
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return res
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}
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// corner is a ◢ of three ridges in the bottom-right.
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func corner(g pixel.Canvas, st pixel.State) {
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for _, s := range []int{2, 5, 8} {
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for i := 0; i <= s; i++ {
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x, y := g.W-1-s+i, g.H-1-i
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g.Dot(x, y, pixel.Shade)
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if x > 0 && y > 0 {
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g.Dot(x-1, y-1, pixel.Lit)
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}
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}
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}
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if st.Disabled {
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g.Checker(0, 0, g.W, g.H, pixel.Face)
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}
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if st.Focus {
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g.FocusMark(0, 0, g.W, g.H)
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}
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}
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