fancy theme

theme.go

@@ -0,0 +1,89 @@
+package main
+
+import (
+	"os"
+	"strings"
+
+	"github.com/charmbracelet/lipgloss"
+	"github.com/mattn/go-runewidth"
+)
+
+// A restrained, high-contrast palette. Text always includes its meaning, so
+// colors supplement the UI rather than carrying state by themselves.
+type uiTheme struct {
+	title, accent, muted, warning, success, active, selected lipgloss.Style
+	border                                                   lipgloss.Style
+	plain                                                    bool
+}
+
+func newTheme() uiTheme {
+	t := uiTheme{plain: os.Getenv("NO_COLOR") != "" || strings.EqualFold(os.Getenv("TERM"), "dumb")}
+	if t.plain {
+		t.title = lipgloss.NewStyle()
+		t.accent = lipgloss.NewStyle()
+		t.muted = lipgloss.NewStyle()
+		t.warning = lipgloss.NewStyle()
+		t.success = lipgloss.NewStyle()
+		t.active = lipgloss.NewStyle()
+		t.selected = lipgloss.NewStyle()
+		t.border = lipgloss.NewStyle()
+		return t
+	}
+	t.title = lipgloss.NewStyle().Bold(true).Foreground(lipgloss.Color("#D7E9EF"))
+	t.accent = lipgloss.NewStyle().Bold(true).Foreground(lipgloss.Color("#70D6D1"))
+	t.muted = lipgloss.NewStyle().Foreground(lipgloss.Color("#8FA6B2"))
+	t.warning = lipgloss.NewStyle().Bold(true).Foreground(lipgloss.Color("#FFC078"))
+	t.success = lipgloss.NewStyle().Foreground(lipgloss.Color("#A8DDA2"))
+	t.active = lipgloss.NewStyle().Foreground(lipgloss.Color("#FFC078"))
+	t.selected = lipgloss.NewStyle().Bold(true).Foreground(lipgloss.Color("#F4FAFC")).Background(lipgloss.Color("#244553"))
+	t.border = lipgloss.NewStyle().Foreground(lipgloss.Color("#426573"))
+	return t
+}
+
+func (t uiTheme) status(status string) string {
+	label := "[" + safe(status) + "]"
+	switch strings.ToLower(status) {
+	case "closed", "done":
+		return t.muted.Render(label)
+	case "open":
+		return t.success.Render(label)
+	default:
+		return t.active.Render(label)
+	}
+}
+
+func (t uiTheme) heading(section string, count string, width int) string {
+	prefix := "▌ TODOAPP  /  "
+	section = runewidth.Truncate(safe(section), max(1, width-runewidth.StringWidth(prefix)), "…")
+	return t.accent.Render("▌ ") + t.title.Render("TODOAPP") + t.muted.Render("  /  "+section) + "\n" +
+		t.muted.Render(runewidth.Truncate(safe(count), max(1, width), "…"))
+}
+
+// box frames content only when the terminal has room for a border. The width
+// argument is the terminal width, not the inner content width.
+func (t uiTheme) box(content string, width, height int) string {
+	if width < 50 || height < 14 || t.plain {
+		return content
+	}
+	return t.border.Border(lipgloss.RoundedBorder()).Padding(0, 1).Width(min(width, 100) - 2).Render(content)
+}
+
+func (t uiTheme) row(label string, selected bool, width int) string {
+	prefix := "  "
+	if selected {
+		prefix = "› "
+	}
+	text := runewidth.Truncate(prefix+label, max(1, width), "…")
+	if selected {
+		return t.selected.Width(min(width, 100)).Render(text)
+	}
+	return text
+}
+
+func (t uiTheme) hint(text string, width int) string {
+	return t.muted.Render(runewidth.Truncate(text, max(1, width), "…"))
+}
+
+func (t uiTheme) alert(text string, width int) string {
+	return t.warning.Render(runewidth.Truncate("! "+safe(text), max(1, width), "…"))
+}