66 lines
1.3 KiB
Go
66 lines
1.3 KiB
Go
package tui
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import (
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"github.com/lixenwraith/terminal"
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)
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// ModalOpts configures modal overlay rendering
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type ModalOpts struct {
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Title string
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Hint string // Right-aligned hint text
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Border LineType
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BorderFg terminal.RGB
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TitleFg terminal.RGB
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HintFg terminal.RGB
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Bg terminal.RGB
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}
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// Modal fills region with background, draws border with title/hint, returns content region
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func (r Region) Modal(opts ModalOpts) Region {
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if r.W < 5 || r.H < 3 {
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return r.Sub(1, 1, 0, 0)
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}
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// Fill entire region
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r.Fill(opts.Bg)
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// Draw border
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r.Box(opts.Border, opts.BorderFg)
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// Title centered on top edge
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if opts.Title != "" {
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title := " " + opts.Title + " "
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titleLen := RuneLen(title)
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if titleLen > r.W-4 {
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title = Truncate(title, r.W-4)
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titleLen = RuneLen(title)
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}
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x := (r.W - titleLen) / 2
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for i, ch := range title {
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r.Cell(x+i, 0, ch, opts.TitleFg, opts.Bg, terminal.AttrBold)
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}
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}
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// Hint right-aligned on top edge
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if opts.Hint != "" {
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hint := opts.Hint
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hintLen := RuneLen(hint)
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if hintLen > r.W/3 {
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hint = Truncate(hint, r.W/3)
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hintLen = RuneLen(hint)
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}
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x := r.W - hintLen - 2
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if x < r.W/2 {
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x = r.W / 2
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}
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for i, ch := range hint {
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if x+i >= r.W-1 {
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break
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}
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r.Cell(x+i, 0, ch, opts.HintFg, opts.Bg, terminal.AttrNone)
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}
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}
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// Return content region
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return r.Sub(1, 1, r.W-2, r.H-2)
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} |