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>
64 lines
2.1 KiB
Go
64 lines
2.1 KiB
Go
package files
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import (
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"image"
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"github.com/egoist/mygo/ui"
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"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/display"
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"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/layout"
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"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
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)
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// Preview is what a file shows: a picture, else text.
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type Preview struct {
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Picture image.Image
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Text string
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}
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type FilePreviewOptions struct {
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// W and H are dots; zeros mean 160 and 120.
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W, H int
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}
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type previewKey struct{}
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// FilePreview shows a picture, else text, in a sunken pane.
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func FilePreview(c *ui.Context, name string, pv Preview, o FilePreviewOptions) ui.Element {
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k := pixel.K(c)
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w, h := pixel.Or("FilePreview W", o.W, 160), pixel.Or("FilePreview H", o.H, 120)
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return ui.Column(c).Gap(k.D(2)).AlignItems(ui.Start).Role(ui.RoleGroup).Label(name).Children(func() {
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// The group says the name; the title only shows it.
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ui.Box(c).Size(k.D(pixel.Measure(name)), k.D(pixel.LineHeight)).Draw(func(p *ui.Painter, r ui.Rect) {
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k.Canvas(p, r).Text(0, 0, name, pixel.Faint, 1)
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})
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layout.Panel(c, layout.PanelOptions{Style: pixel.Sunken, Fill: pixel.Well, Padding: 2}, func() {
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pane := ui.Column(c).Size(k.D(w), k.D(h)).AlignItems(ui.Center).Justify(ui.Center)
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pane.Children(func() {
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switch {
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case pv.Picture != nil:
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pw, ph := fit(pv.Picture.Bounds(), w, h)
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display.Picture(c, pv.Picture, display.PictureOptions{W: pw, H: ph, Label: k.Msg("preview")})
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case pv.Text != "":
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s := ui.Local(pane, previewKey{}, func() ui.ScrollState { return ui.ScrollState{} })
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layout.ScrollArea(c, s, layout.ScrollAreaOptions{Label: k.Msg("preview")}, func() {
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pixel.Text(c, pv.Text, pixel.TextOptions{Wrap: true})
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}).Element.Size(k.D(w), k.D(h))
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default:
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pixel.Text(c, k.Msg("no_preview"), pixel.TextOptions{Slot: pixel.Faint})
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}
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})
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})
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})
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}
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// fit scales b into w×h: whole steps up, any down.
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func fit(b image.Rectangle, w, h int) (int, int) {
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bw, bh := max(1, b.Dx()), max(1, b.Dy())
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s := min(float64(w)/float64(bw), float64(h)/float64(bh))
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if s >= 1 {
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s = float64(int(s))
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}
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return max(1, int(float64(bw)*s)), max(1, int(float64(bh)*s))
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}
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