Lixen
d4cc9f2407
* tui: titles, labels and buttons drawn a column a rune Ten places drew each rune of a title or label at its byte offset, so a string holding runes of more than one byte drew with holes and ran past the width it was measured and truncated to: the Pane title, the Modal title and hint, the Divider label, TabBar titles, Table cells, Form labels, the TextField placeholder, the ConfirmDialog and AlertDialog buttons, and the ProgressOverlay title. Each now draws through Region.Text, which counts columns by rune, within the bound its loop kept; a Form label stays within its label column, as the byte count meant it to. * an unchanged frame writes nothing flush closed every frame with SGR 0, so a frame that changed no cell still sent four bytes, and an app drawing an idle screen kept writing to the terminal. The reset now follows only a frame that wrote cells: the next cell written restates its whole style, and Fini resets on its own. Each widget, given a title such as "● é · ñ", draws it whole where it drew it with holes before; a frame flushed twice writes nothing the second time, where it wrote ESC [ 0 m.
63 lines
1.5 KiB
Go
63 lines
1.5 KiB
Go
package tui
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import (
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"github.com/lixenwraith/color"
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"github.com/lixenwraith/terminal"
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)
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// PaneOpts configures pane rendering
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type PaneOpts struct {
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Title string
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Border LineType
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BorderFg color.RGB
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Bg color.RGB
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TitleFg color.RGB
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}
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// Pane draws bordered pane with optional title, returns content region
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// Content region is inside border, below title row if present
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func (r Region) Pane(opts PaneOpts) Region {
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if r.W < 3 || r.H < 3 {
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return r.Sub(1, 1, 0, 0)
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}
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// Fill background
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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 on top edge
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if opts.Title != "" {
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title := " " + opts.Title + " "
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if RuneLen(title) > r.W-4 {
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title = Truncate(title, r.W-4)
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}
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r.Text(2, 0, title, opts.TitleFg, opts.Bg, terminal.AttrBold)
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}
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// Content region is everything inside the border. The title sits ON the border row.
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return r.Sub(1, 1, r.W-2, r.H-2)
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}
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// TitledPane fills region with background, draws centered title at top, returns content region
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// Content region starts at row 1 with full width
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func (r Region) TitledPane(title string, titleFg, bg color.RGB) Region {
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r.Fill(bg)
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if title != "" && r.H > 0 {
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r.TextCenter(0, title, titleFg, bg, terminal.AttrBold)
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}
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if r.H <= 1 {
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return r.Sub(0, 0, r.W, 0)
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}
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return r.Sub(0, 1, r.W, r.H-1)
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}
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// TitledPaneFocused is TitledPane with focus-dependent background
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func (r Region) TitledPaneFocused(title string, titleFg, bg, focusBg color.RGB, focused bool) Region {
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if focused {
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bg = focusBg
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}
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return r.TitledPane(title, titleFg, bg)
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}
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