ZacharyZhang-NY
455f5f2a05
Speech bubbles, a chat log that follows its end, a composer that sends on Enter, typing dots, chat and channel lists, read receipts, reactions, emoji and sticker pickers, mentions, date and unread rules, system lines, member lists, user cards, a mailbox, mail reader and letter, a notification bell, call controls, a voice meter, attachment chips, link previews and polls. pixel's editor takes EnterSends; display's Bubble takes a Fill and exports EmojiSprite. data.List names its rows, which also lets typing choose one. layout.ScrollArea and input.TextArea hold still under Inert, and an inert scroll view leaves the Tab order until it wakes.
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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