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>
62 lines
1.7 KiB
Go
62 lines
1.7 KiB
Go
package chat
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import (
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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/icon"
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"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
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)
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type LinkPreviewOptions struct {
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// Width is in dots; zero means 200.
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Width int
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Disabled bool
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}
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type LinkPreviewResult struct {
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Element ui.Element
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Clicked bool
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}
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// LinkPreview: thumbnail, title and site; a click opens url.
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func LinkPreview(c *ui.Context, url, title, site string, o LinkPreviewOptions) LinkPreviewResult {
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k := pixel.K(c)
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w := pixel.Or("LinkPreview Width", o.Width, 200)
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if w < 100 {
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panic("chat: a LinkPreview needs 100 dots")
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}
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lines := pixel.Wrap(title, w-56, 2)
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// The site sits under the title; the card fits both.
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sy := 4 + len(lines)*pixel.LineHeight
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h := max(40, sy+12)
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shell, base, st := pixel.Shell(c, func() ui.Element {
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return ui.Box(c).Focusable().Role(ui.RoleLink).Label(title).Description(url).Disabled(o.Disabled).Cursor(ui.CursorPointer).FocusRing(false)
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})
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shell.Size(k.D(w), k.D(h)).Draw(func(p *ui.Painter, r ui.Rect) {
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g := k.Canvas(p, r)
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fill := pixel.Face
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if st.Hover {
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fill = pixel.Lit
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}
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g.Frame(0, 0, w, h, pixel.Window, fill)
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// The thumbnail is a placeholder: dithered, with a picture icon.
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g.Frame(4, 4, 40, 32, pixel.Sunken, pixel.Well)
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g.Dither(6, 6, 36, 28, pixel.Well, pixel.Shade, 4)
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g.Sprite(18, 14, icon.Image, 0, pixel.Faint, 1)
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for i, l := range lines {
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g.Text(50, 3+i*pixel.LineHeight, l, pixel.Ink, 1)
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}
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tag(g, 50, sy, line(site, w-56), pixel.Faint)
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g.Finish(st)
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})
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res := LinkPreviewResult{Element: shell}
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if base.Clicked() {
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c.OpenURL(url)
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res.Clicked = true
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slog.Debug("8bit: link opened", "url", url)
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}
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return res
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}
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