ZacharyZhang-NY
552b073e81
Fifteen file components: FileExplorer, FileGrid, FileIcon, PathBar, MemoryCard, DiskUsage, UploadQueue, Trash, RecentFiles, FilePreview, ArchiveViewer, FileDetails, SharePanel, SyncStatus and QuotaMeter. FileIcon draws six kinds as hand-placed 12x12 pages and a folder. The browsers build on data.Tree, List, GridView and Table; ArchiveViewer owns its sort and keeps the caller's index on its entry. UploadQueue keys rows by name so focus stays on its row. SharePanel never logs the link. SyncStatus turns its arrows on Busy steps, so syncing moves under Reduce Motion. data.Tree now opens the closed branches above a chosen path it knows, so a caller's starting path survives the first frame.
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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