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Merged
programmersd21 merged 1 commit into from
Aug 28, 2026
Merged

Add new ansi theme #35

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2 changes: 1 addition & 1 deletion README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -97,7 +97,7 @@ Pre-built binaries for Linux, macOS, and Windows (amd64/arm64) are on the [relea
- Live latency (ping) indicator, configurable target
- Network processes panel (`n`) -- active connections sorted by count
- Interface details overlay (`I`) -- IP, MAC, link status, MTU
- 8 built-in themes plus custom themes via TOML
- 9 built-in themes plus custom themes via TOML
- Session peak tracking and daily totals, persisted across restarts
- Streaming JSON output (`--json-stream`) for pipelines
- Four responsive display modes, switching on both width and height
Expand Down
68 changes: 66 additions & 2 deletions internal/theme/theme.go
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Expand Up @@ -26,6 +26,13 @@ type Theme struct {
UploadBorderStart [3]uint8
UploadBorderEnd [3]uint8
LogoStops [4][3]uint8
// ANSIDownload, ANSIUpload and ANSILogo hold terminal palette indices
// ("0"-"15") instead of RGB triples. When they are set the theme steps
// through them rather than interpolating, so the colors the user's
// terminal already defines come through untouched.
ANSIDownload [5]string
ANSIUpload [5]string
ANSILogo [4]string
}

type ThemeInfo struct {
Expand Down Expand Up @@ -314,6 +321,22 @@ var themes = []Theme{
{0xf7, 0x76, 0x8e},
},
},
{
Name: "ansi",
TextDim: "8", // Bright black
TextMuted: "7", // White
TextSoft: "7", // White
TextBase: "7", // White
TextBright: "15", // Bright white
TextPure: "15", // Bright white
Border: "8", // Bright black
Accent: "6", // Cyan
// No RGB stops: every color below is a terminal palette index, so the
// gradients step through the user's own colors instead of blending.
ANSIDownload: [5]string{"4", "12", "6", "14", "15"}, // blue -> cyan -> white
ANSIUpload: [5]string{"2", "10", "3", "11", "15"}, // green -> yellow -> white
ANSILogo: [4]string{"5", "13", "4", "6"}, // magenta -> blue -> cyan
},
}

var activeTheme = &themes[0]
Expand Down Expand Up @@ -350,6 +373,7 @@ func ListThemes() []ThemeInfo {
{Name: "monochrome", Description: "A high-contrast clean theme with neutral grays and silver"},
{Name: "catppuccin", Description: "A soothing pastel palette with mauves, blues, and teals"},
{Name: "tokyo-night", Description: "A deep dark theme with vibrant blues, cyans, and purples"},
{Name: "ansi", Description: "Your terminal's own 16 colors, so flow matches whatever palette it runs in"},
}
for _, ct := range customThemes {
builtin = append(builtin, ThemeInfo{Name: ct.Name, Description: "custom theme"})
Expand Down Expand Up @@ -401,6 +425,10 @@ func Dim() lipgloss.Style {

func LogoDotColor(pulse float64) lipgloss.Style {
pulse = animate.Clamp01(pulse)
if activeTheme.usesANSI() {
// No blending available, so the dot flashes from accent to bright white.
return lipgloss.NewStyle().Foreground(ansiStop([]string{activeTheme.Accent, activeTheme.TextBright}, pulse))
}
ra, ga, ba := hexToRGB(activeTheme.Accent)
// Peak color: brighten the accent toward white so the dot flashes a neon glow on each sample.
br := uint8(float64(ra)*0.30 + 255*0.70)
Expand All @@ -425,18 +453,27 @@ func TextDim() lipgloss.Style {

func DownloadColor(intensity float64) lipgloss.Style {
intensity = animate.Clamp01(intensity)
if activeTheme.usesANSI() {
return lipgloss.NewStyle().Foreground(ansiStop(activeTheme.ANSIDownload[:], intensity))
}
r, g, b := fiveStopGradient(activeTheme.DownloadStops, intensity)
return lipgloss.NewStyle().Foreground(lipgloss.Color(fmt.Sprintf("#%02x%02x%02x", r, g, b)))
}

func UploadColor(intensity float64) lipgloss.Style {
intensity = animate.Clamp01(intensity)
if activeTheme.usesANSI() {
return lipgloss.NewStyle().Foreground(ansiStop(activeTheme.ANSIUpload[:], intensity))
}
r, g, b := fiveStopGradient(activeTheme.UploadStops, intensity)
return lipgloss.NewStyle().Foreground(lipgloss.Color(fmt.Sprintf("#%02x%02x%02x", r, g, b)))
}

func DownloadBorderColor(intensity float64) lipgloss.Color {
intensity = animate.Clamp01(intensity)
if activeTheme.usesANSI() {
return ansiStop(activeTheme.ANSIDownload[:4], intensity)
}
r, g, b := animate.ColorLerp(
activeTheme.DownloadBorderStart[0], activeTheme.DownloadBorderStart[1], activeTheme.DownloadBorderStart[2],
activeTheme.DownloadBorderEnd[0], activeTheme.DownloadBorderEnd[1], activeTheme.DownloadBorderEnd[2],
Expand All @@ -447,6 +484,9 @@ func DownloadBorderColor(intensity float64) lipgloss.Color {

func UploadBorderColor(intensity float64) lipgloss.Color {
intensity = animate.Clamp01(intensity)
if activeTheme.usesANSI() {
return ansiStop(activeTheme.ANSIUpload[:4], intensity)
}
r, g, b := animate.ColorLerp(
activeTheme.UploadBorderStart[0], activeTheme.UploadBorderStart[1], activeTheme.UploadBorderStart[2],
activeTheme.UploadBorderEnd[0], activeTheme.UploadBorderEnd[1], activeTheme.UploadBorderEnd[2],
Expand All @@ -457,12 +497,31 @@ func UploadBorderColor(intensity float64) lipgloss.Color {

func PeakColor(pulse float64) lipgloss.Style {
pulse = animate.Clamp01(pulse)
if activeTheme.usesANSI() {
return lipgloss.NewStyle().Foreground(ansiStop([]string{activeTheme.TextMuted, activeTheme.Accent}, pulse))
}
r1, g1, b1 := hexToRGB(activeTheme.TextMuted)
r2, g2, b2 := hexToRGB(activeTheme.Accent)
r, g, b := animate.ColorLerp(r1, g1, b1, r2, g2, b2, pulse)
return lipgloss.NewStyle().Foreground(lipgloss.Color(fmt.Sprintf("#%02x%02x%02x", r, g, b)))
}

// usesANSI reports whether the active theme draws from the terminal palette
// instead of its own RGB gradients.
func (t *Theme) usesANSI() bool {
return t.ANSIDownload[0] != ""
}

// ansiStop picks one palette entry for t, splitting 0..1 evenly across stops.
func ansiStop(stops []string, t float64) lipgloss.Color {
t = animate.Clamp01(t)
idx := int(t * float64(len(stops)))
if idx >= len(stops) {
idx = len(stops) - 1
}
return lipgloss.Color(stops[idx])
}

func fiveStopGradient(stops [5][3]uint8, t float64) (uint8, uint8, uint8) {
t = animate.Clamp01(t)
segment := t * 4.0
Expand Down Expand Up @@ -524,8 +583,13 @@ func LogoColored(width int) []string {
lines := make([]string, len(logoSrc))
for i, line := range logoSrc {
rowT := float64(i) / float64(len(logoSrc)-1)
r, g, b := fourStopLogoGradient(rowT, 1.0)
color := lipgloss.Color(fmt.Sprintf("#%02x%02x%02x", r, g, b))
var color lipgloss.Color
if activeTheme.usesANSI() {
color = ansiStop(activeTheme.ANSILogo[:], rowT)
} else {
r, g, b := fourStopLogoGradient(rowT, 1.0)
color = lipgloss.Color(fmt.Sprintf("#%02x%02x%02x", r, g, b))
}
lines[i] = left + lipgloss.NewStyle().Foreground(color).Bold(true).Render(line) + right
}
return lines
Expand Down
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