mirror of
https://github.com/tiennm99/ghstats.git
synced 2026-05-20 14:23:58 +00:00
tiennm99
ffc76ebc21
- Replace the previous 30-theme list with the complete 61-theme palette from github-profile-summary-cards (snake_case ids, e.g. github_dark, nord_bright, solarized_dark). - Add Stroke and StrokeOpacity fields to Theme; card frame now uses the theme's own stroke instead of a hardcoded white overlay so light themes render a visible border. - Drop the github-readme-stats credit from README; all palette data now comes from one upstream source.
113 lines
3.1 KiB
Go
113 lines
3.1 KiB
Go
package card
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import (
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"fmt"
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"math"
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"strings"
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"github.com/tiennm99/ghstats/internal/github"
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"github.com/tiennm99/ghstats/internal/theme"
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)
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// renderDonutCard draws a donut chart with a left-side legend. Shared by the
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// repos-per-language and most-commit-language cards. Up to topN slices are
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// shown; smaller slices are grouped into "Other".
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func renderDonutCard(title string, stats []github.LangStat, t theme.Theme) []byte {
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const (
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width = 500
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height = 220
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topN = 6
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cx = 380 // donut centre x
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cy = 120 // donut centre y
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outerR = 70.0 // donut outer radius
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innerR = 38.0 // donut hole
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legendX = 30
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legendY0 = 70
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legendDY = 22
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swatchSz = 12
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)
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stats = collapseOther(stats, topN)
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var b strings.Builder
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b.WriteString(header(width, height, t.Background, t.Stroke, t.StrokeOpacity, t.Title, title))
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if len(stats) == 0 {
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fmt.Fprintf(&b, `
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<text x="25" y="90" font-size="13" fill="%s">No data available.</text>`, t.Muted)
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b.WriteString(footer)
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return []byte(b.String())
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}
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var total int64
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for _, s := range stats {
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total += s.Value
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}
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// Legend (square + name + percentage).
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for i, s := range stats {
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pct := 100 * float64(s.Value) / float64(total)
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y := legendY0 + i*legendDY
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fmt.Fprintf(&b, `
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<rect x="%d" y="%d" width="%d" height="%d" fill="%s" stroke="%s" stroke-width="1"/>
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<text x="%d" y="%d" font-size="13" fill="%s">%s %.2f%%</text>`,
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legendX, y-swatchSz+2, swatchSz, swatchSz,
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colorOrAccent(s.Color, t.Accent), t.Background,
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legendX+swatchSz+8, y, t.Text,
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escapeXML(s.Name), pct)
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}
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// Donut slices.
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start := -math.Pi / 2 // 12 o'clock start
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for _, s := range stats {
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angle := 2 * math.Pi * float64(s.Value) / float64(total)
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end := start + angle
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large := 0
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if angle > math.Pi {
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large = 1
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}
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sx, sy := polar(cx, cy, outerR, start)
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ex, ey := polar(cx, cy, outerR, end)
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isx, isy := polar(cx, cy, innerR, end)
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iex, iey := polar(cx, cy, innerR, start)
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fmt.Fprintf(&b, `
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<path d="M%.2f,%.2f A%.2f,%.2f 0 %d 1 %.2f,%.2f L%.2f,%.2f A%.2f,%.2f 0 %d 0 %.2f,%.2f Z" fill="%s" stroke="%s" stroke-width="1.5"/>`,
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sx, sy, outerR, outerR, large, ex, ey,
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isx, isy, innerR, innerR, large, iex, iey,
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colorOrAccent(s.Color, t.Accent), t.Background)
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start = end
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}
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b.WriteString(footer)
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return []byte(b.String())
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}
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// polar returns the cartesian coordinate at (r, angle) around (cx, cy).
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// Angle is in radians, measured clockwise from 3 o'clock (standard SVG).
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func polar(cx, cy float64, r, angle float64) (float64, float64) {
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return cx + r*math.Cos(angle), cy + r*math.Sin(angle)
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}
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// collapseOther returns the top (n-1) slices plus an "Other" row summing the
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// rest. When the slice fits, it's returned as-is.
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func collapseOther(in []github.LangStat, n int) []github.LangStat {
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if len(in) <= n {
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return in
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}
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out := make([]github.LangStat, 0, n)
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out = append(out, in[:n-1]...)
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var rest int64
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for _, s := range in[n-1:] {
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rest += s.Value
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}
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out = append(out, github.LangStat{Name: "Other", Value: rest})
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return out
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}
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func colorOrAccent(c, fallback string) string {
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if c == "" {
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return fallback
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}
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return c
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}
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