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Theme test improvements
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Because there is theme logic for every chart type, this updates the testing so that theme configuration is validated for all chart types as well.
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@jentfoo
jentfoo committed Feb 10, 2024
1 parent 10ac536 commit 28bb889
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Showing 13 changed files with 628 additions and 393 deletions.
6 changes: 3 additions & 3 deletions bar_chart.go
View file
Original file line number Diff line number Diff line change
Expand Up @@ -14,9 +14,6 @@ type barChart struct {

// NewBarChart returns a bar chart renderer
func NewBarChart(p *Painter, opt BarChartOption) *barChart {
if opt.Theme == nil {
opt.Theme = getPreferredTheme(p.theme)
}
return &barChart{
p: p,
opt: &opt,
Expand Down Expand Up @@ -186,6 +183,9 @@ func (b *barChart) render(result *defaultRenderResult, seriesList SeriesList) (B
func (b *barChart) Render() (Box, error) {
p := b.p
opt := b.opt
if opt.Theme == nil {
opt.Theme = getPreferredTheme(p.theme)
}
renderResult, err := defaultRender(p, defaultRenderOption{
Theme: opt.Theme,
Padding: opt.Padding,
Expand Down
198 changes: 116 additions & 82 deletions bar_chart_test.go
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7 changes: 4 additions & 3 deletions funnel_chart.go
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Original file line number Diff line number Diff line change
Expand Up @@ -22,9 +22,6 @@ func NewFunnelSeriesList(values []float64) SeriesList {

// NewFunnelChart returns a funnel chart renderer
func NewFunnelChart(p *Painter, opt FunnelChartOption) *funnelChart {
if opt.Theme == nil {
opt.Theme = getPreferredTheme(p.theme)
}
return &funnelChart{
p: p,
opt: &opt,
Expand Down Expand Up @@ -147,6 +144,10 @@ func (f *funnelChart) render(result *defaultRenderResult, seriesList SeriesList)
func (f *funnelChart) Render() (Box, error) {
p := f.p
opt := f.opt
if opt.Theme == nil {
opt.Theme = getPreferredTheme(p.theme)
}

renderResult, err := defaultRender(p, defaultRenderOption{
Theme: opt.Theme,
Padding: opt.Padding,
Expand Down
117 changes: 75 additions & 42 deletions funnel_chart_test.go
View file
Original file line number Diff line number Diff line change
@@ -1,61 +1,94 @@
package charts

import (
"strconv"
"testing"

"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)

func makeBasicFunnelChartOption() FunnelChartOption {
return FunnelChartOption{
SeriesList: NewFunnelSeriesList([]float64{
100,
80,
60,
40,
20,
}),
Legend: NewLegendOption([]string{
"Show",
"Click",
"Visit",
"Inquiry",
"Order",
}),
Title: TitleOption{
Text: "Funnel",
},
}
}

func TestFunnelChart(t *testing.T) {
t.Parallel()

tests := []struct {
render func(*Painter) ([]byte, error)
result string
name string
defaultTheme bool
makeOptions func() FunnelChartOption
result string
}{
{
render: func(p *Painter) ([]byte, error) {
_, err := NewFunnelChart(p, FunnelChartOption{
SeriesList: NewFunnelSeriesList([]float64{
100,
80,
60,
40,
20,
}),
Legend: NewLegendOption([]string{
"Show",
"Click",
"Visit",
"Inquiry",
"Order",
}),
Title: TitleOption{
Text: "Funnel",
},
}).Render()
if err != nil {
return nil, err
}
return p.Bytes()
},
result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" width=\"600\" height=\"400\">\\n<path d=\"M 0 0\nL 600 0\nL 600 400\nL 0 400\nL 0 0\" style=\"stroke-width:0;stroke:none;fill:rgba(255,255,255,1.0)\"/><path d=\"M 86 9\nL 116 9\" style=\"stroke-width:3;stroke:rgba(84,112,198,1.0);fill:rgba(84,112,198,1.0)\"/><circle cx=\"101\" cy=\"9\" r=\"5\" style=\"stroke-width:3;stroke:rgba(84,112,198,1.0);fill:rgba(84,112,198,1.0)\"/><path d=\"\" style=\"stroke-width:3;stroke:rgba(84,112,198,1.0);fill:rgba(84,112,198,1.0)\"/><text x=\"118\" y=\"15\" style=\"stroke-width:0;stroke:none;fill:rgba(70,70,70,1.0);font-size:15.3px;font-family:'Roboto Medium',sans-serif\">Show</text><path d=\"M 176 9\nL 206 9\" style=\"stroke-width:3;stroke:rgba(145,204,117,1.0);fill:rgba(145,204,117,1.0)\"/><circle cx=\"191\" cy=\"9\" r=\"5\" style=\"stroke-width:3;stroke:rgba(145,204,117,1.0);fill:rgba(145,204,117,1.0)\"/><path d=\"\" style=\"stroke-width:3;stroke:rgba(145,204,117,1.0);fill:rgba(145,204,117,1.0)\"/><text x=\"208\" y=\"15\" style=\"stroke-width:0;stroke:none;fill:rgba(70,70,70,1.0);font-size:15.3px;font-family:'Roboto Medium',sans-serif\">Click</text><path d=\"M 262 9\nL 292 9\" style=\"stroke-width:3;stroke:rgba(250,200,88,1.0);fill:rgba(250,200,88,1.0)\"/><circle cx=\"277\" cy=\"9\" r=\"5\" style=\"stroke-width:3;stroke:rgba(250,200,88,1.0);fill:rgba(250,200,88,1.0)\"/><path d=\"\" style=\"stroke-width:3;stroke:rgba(250,200,88,1.0);fill:rgba(250,200,88,1.0)\"/><text x=\"294\" y=\"15\" style=\"stroke-width:0;stroke:none;fill:rgba(70,70,70,1.0);font-size:15.3px;font-family:'Roboto Medium',sans-serif\">Visit</text><path d=\"M 345 9\nL 375 9\" style=\"stroke-width:3;stroke:rgba(238,102,102,1.0);fill:rgba(238,102,102,1.0)\"/><circle cx=\"360\" cy=\"9\" r=\"5\" style=\"stroke-width:3;stroke:rgba(238,102,102,1.0);fill:rgba(238,102,102,1.0)\"/><path d=\"\" style=\"stroke-width:3;stroke:rgba(238,102,102,1.0);fill:rgba(238,102,102,1.0)\"/><text x=\"377\" y=\"15\" style=\"stroke-width:0;stroke:none;fill:rgba(70,70,70,1.0);font-size:15.3px;font-family:'Roboto Medium',sans-serif\">Inquiry</text><path d=\"M 444 9\nL 474 9\" style=\"stroke-width:3;stroke:rgba(115,192,222,1.0);fill:rgba(115,192,222,1.0)\"/><circle cx=\"459\" cy=\"9\" r=\"5\" style=\"stroke-width:3;stroke:rgba(115,192,222,1.0);fill:rgba(115,192,222,1.0)\"/><path d=\"\" style=\"stroke-width:3;stroke:rgba(115,192,222,1.0);fill:rgba(115,192,222,1.0)\"/><text x=\"476\" y=\"15\" style=\"stroke-width:0;stroke:none;fill:rgba(70,70,70,1.0);font-size:15.3px;font-family:'Roboto Medium',sans-serif\">Order</text><text x=\"0\" y=\"15\" style=\"stroke-width:0;stroke:none;fill:rgba(70,70,70,1.0);font-size:15.3px;font-family:'Roboto Medium',sans-serif\">Funnel</text><path d=\"M 0 35\nL 600 35\nL 540 100\nL 60 100\nL 0 35\" style=\"stroke-width:0;stroke:none;fill:rgba(84,112,198,1.0)\"/><text x=\"280\" y=\"67\" style=\"stroke-width:0;stroke:none;fill:rgba(70,70,70,1.0);font-size:12.8px;font-family:'Roboto Medium',sans-serif\">(100%)</text><path d=\"M 60 102\nL 540 102\nL 480 167\nL 120 167\nL 60 102\" style=\"stroke-width:0;stroke:none;fill:rgba(145,204,117,1.0)\"/><text x=\"284\" y=\"134\" style=\"stroke-width:0;stroke:none;fill:rgba(70,70,70,1.0);font-size:12.8px;font-family:'Roboto Medium',sans-serif\">(80%)</text><path d=\"M 120 169\nL 480 169\nL 420 234\nL 180 234\nL 120 169\" style=\"stroke-width:0;stroke:none;fill:rgba(250,200,88,1.0)\"/><text x=\"284\" y=\"201\" style=\"stroke-width:0;stroke:none;fill:rgba(70,70,70,1.0);font-size:12.8px;font-family:'Roboto Medium',sans-serif\">(60%)</text><path d=\"M 180 236\nL 420 236\nL 360 301\nL 240 301\nL 180 236\" style=\"stroke-width:0;stroke:none;fill:rgba(238,102,102,1.0)\"/><text x=\"284\" y=\"268\" style=\"stroke-width:0;stroke:none;fill:rgba(70,70,70,1.0);font-size:12.8px;font-family:'Roboto Medium',sans-serif\">(40%)</text><path d=\"M 240 303\nL 360 303\nL 300 368\nL 300 368\nL 240 303\" style=\"stroke-width:0;stroke:none;fill:rgba(115,192,222,1.0)\"/><text x=\"284\" y=\"335\" style=\"stroke-width:0;stroke:none;fill:rgba(70,70,70,1.0);font-size:12.8px;font-family:'Roboto Medium',sans-serif\">(20%)</text></svg>",
name: "default",
defaultTheme: true,
makeOptions: makeBasicFunnelChartOption,
result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" width=\"600\" height=\"400\">\\n<path d=\"M 0 0\nL 600 0\nL 600 400\nL 0 400\nL 0 0\" style=\"stroke-width:0;stroke:none;fill:rgba(255,255,255,1.0)\"/><path d=\"M 86 9\nL 116 9\" style=\"stroke-width:3;stroke:rgba(84,112,198,1.0);fill:rgba(84,112,198,1.0)\"/><circle cx=\"101\" cy=\"9\" r=\"5\" style=\"stroke-width:3;stroke:rgba(84,112,198,1.0);fill:rgba(84,112,198,1.0)\"/><path d=\"\" style=\"stroke-width:3;stroke:rgba(84,112,198,1.0);fill:rgba(84,112,198,1.0)\"/><text x=\"118\" y=\"15\" style=\"stroke-width:0;stroke:none;fill:rgba(70,70,70,1.0);font-size:15.3px;font-family:'Roboto Medium',sans-serif\">Show</text><path d=\"M 176 9\nL 206 9\" style=\"stroke-width:3;stroke:rgba(145,204,117,1.0);fill:rgba(145,204,117,1.0)\"/><circle cx=\"191\" cy=\"9\" r=\"5\" style=\"stroke-width:3;stroke:rgba(145,204,117,1.0);fill:rgba(145,204,117,1.0)\"/><path d=\"\" style=\"stroke-width:3;stroke:rgba(145,204,117,1.0);fill:rgba(145,204,117,1.0)\"/><text x=\"208\" y=\"15\" style=\"stroke-width:0;stroke:none;fill:rgba(70,70,70,1.0);font-size:15.3px;font-family:'Roboto Medium',sans-serif\">Click</text><path d=\"M 262 9\nL 292 9\" style=\"stroke-width:3;stroke:rgba(250,200,88,1.0);fill:rgba(250,200,88,1.0)\"/><circle cx=\"277\" cy=\"9\" r=\"5\" style=\"stroke-width:3;stroke:rgba(250,200,88,1.0);fill:rgba(250,200,88,1.0)\"/><path d=\"\" style=\"stroke-width:3;stroke:rgba(250,200,88,1.0);fill:rgba(250,200,88,1.0)\"/><text x=\"294\" y=\"15\" style=\"stroke-width:0;stroke:none;fill:rgba(70,70,70,1.0);font-size:15.3px;font-family:'Roboto Medium',sans-serif\">Visit</text><path d=\"M 345 9\nL 375 9\" style=\"stroke-width:3;stroke:rgba(238,102,102,1.0);fill:rgba(238,102,102,1.0)\"/><circle cx=\"360\" cy=\"9\" r=\"5\" style=\"stroke-width:3;stroke:rgba(238,102,102,1.0);fill:rgba(238,102,102,1.0)\"/><path d=\"\" style=\"stroke-width:3;stroke:rgba(238,102,102,1.0);fill:rgba(238,102,102,1.0)\"/><text x=\"377\" y=\"15\" style=\"stroke-width:0;stroke:none;fill:rgba(70,70,70,1.0);font-size:15.3px;font-family:'Roboto Medium',sans-serif\">Inquiry</text><path d=\"M 444 9\nL 474 9\" style=\"stroke-width:3;stroke:rgba(115,192,222,1.0);fill:rgba(115,192,222,1.0)\"/><circle cx=\"459\" cy=\"9\" r=\"5\" style=\"stroke-width:3;stroke:rgba(115,192,222,1.0);fill:rgba(115,192,222,1.0)\"/><path d=\"\" style=\"stroke-width:3;stroke:rgba(115,192,222,1.0);fill:rgba(115,192,222,1.0)\"/><text x=\"476\" y=\"15\" style=\"stroke-width:0;stroke:none;fill:rgba(70,70,70,1.0);font-size:15.3px;font-family:'Roboto Medium',sans-serif\">Order</text><text x=\"0\" y=\"15\" style=\"stroke-width:0;stroke:none;fill:rgba(70,70,70,1.0);font-size:15.3px;font-family:'Roboto Medium',sans-serif\">Funnel</text><path d=\"M 0 35\nL 600 35\nL 540 100\nL 60 100\nL 0 35\" style=\"stroke-width:0;stroke:none;fill:rgba(84,112,198,1.0)\"/><text x=\"280\" y=\"67\" style=\"stroke-width:0;stroke:none;fill:rgba(70,70,70,1.0);font-size:12.8px;font-family:'Roboto Medium',sans-serif\">(100%)</text><path d=\"M 60 102\nL 540 102\nL 480 167\nL 120 167\nL 60 102\" style=\"stroke-width:0;stroke:none;fill:rgba(145,204,117,1.0)\"/><text x=\"284\" y=\"134\" style=\"stroke-width:0;stroke:none;fill:rgba(70,70,70,1.0);font-size:12.8px;font-family:'Roboto Medium',sans-serif\">(80%)</text><path d=\"M 120 169\nL 480 169\nL 420 234\nL 180 234\nL 120 169\" style=\"stroke-width:0;stroke:none;fill:rgba(250,200,88,1.0)\"/><text x=\"284\" y=\"201\" style=\"stroke-width:0;stroke:none;fill:rgba(70,70,70,1.0);font-size:12.8px;font-family:'Roboto Medium',sans-serif\">(60%)</text><path d=\"M 180 236\nL 420 236\nL 360 301\nL 240 301\nL 180 236\" style=\"stroke-width:0;stroke:none;fill:rgba(238,102,102,1.0)\"/><text x=\"284\" y=\"268\" style=\"stroke-width:0;stroke:none;fill:rgba(70,70,70,1.0);font-size:12.8px;font-family:'Roboto Medium',sans-serif\">(40%)</text><path d=\"M 240 303\nL 360 303\nL 300 368\nL 300 368\nL 240 303\" style=\"stroke-width:0;stroke:none;fill:rgba(115,192,222,1.0)\"/><text x=\"284\" y=\"335\" style=\"stroke-width:0;stroke:none;fill:rgba(70,70,70,1.0);font-size:12.8px;font-family:'Roboto Medium',sans-serif\">(20%)</text></svg>",
},
{
name: "themed",
defaultTheme: false,
makeOptions: makeBasicFunnelChartOption,
result: "<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" width=\"600\" height=\"400\">\\n<path d=\"M 0 0\nL 600 0\nL 600 400\nL 0 400\nL 0 0\" style=\"stroke-width:0;stroke:none;fill:rgba(40,40,40,1.0)\"/><path d=\"M 86 9\nL 116 9\" style=\"stroke-width:3;stroke:rgba(255,100,100,1.0);fill:rgba(255,100,100,1.0)\"/><circle cx=\"101\" cy=\"9\" r=\"5\" style=\"stroke-width:3;stroke:rgba(255,100,100,1.0);fill:rgba(255,100,100,1.0)\"/><path d=\"\" style=\"stroke-width:3;stroke:rgba(255,100,100,1.0);fill:rgba(255,100,100,1.0)\"/><text x=\"118\" y=\"15\" style=\"stroke-width:0;stroke:none;fill:rgba(238,238,238,1.0);font-size:15.3px;font-family:'Roboto Medium',sans-serif\">Show</text><path d=\"M 176 9\nL 206 9\" style=\"stroke-width:3;stroke:rgba(255,210,100,1.0);fill:rgba(255,210,100,1.0)\"/><circle cx=\"191\" cy=\"9\" r=\"5\" style=\"stroke-width:3;stroke:rgba(255,210,100,1.0);fill:rgba(255,210,100,1.0)\"/><path d=\"\" style=\"stroke-width:3;stroke:rgba(255,210,100,1.0);fill:rgba(255,210,100,1.0)\"/><text x=\"208\" y=\"15\" style=\"stroke-width:0;stroke:none;fill:rgba(238,238,238,1.0);font-size:15.3px;font-family:'Roboto Medium',sans-serif\">Click</text><path d=\"M 262 9\nL 292 9\" style=\"stroke-width:3;stroke:rgba(100,180,210,1.0);fill:rgba(100,180,210,1.0)\"/><circle cx=\"277\" cy=\"9\" r=\"5\" style=\"stroke-width:3;stroke:rgba(100,180,210,1.0);fill:rgba(100,180,210,1.0)\"/><path d=\"\" style=\"stroke-width:3;stroke:rgba(100,180,210,1.0);fill:rgba(100,180,210,1.0)\"/><text x=\"294\" y=\"15\" style=\"stroke-width:0;stroke:none;fill:rgba(238,238,238,1.0);font-size:15.3px;font-family:'Roboto Medium',sans-serif\">Visit</text><path d=\"M 345 9\nL 375 9\" style=\"stroke-width:3;stroke:rgba(64,160,110,1.0);fill:rgba(64,160,110,1.0)\"/><circle cx=\"360\" cy=\"9\" r=\"5\" style=\"stroke-width:3;stroke:rgba(64,160,110,1.0);fill:rgba(64,160,110,1.0)\"/><path d=\"\" style=\"stroke-width:3;stroke:rgba(64,160,110,1.0);fill:rgba(64,160,110,1.0)\"/><text x=\"377\" y=\"15\" style=\"stroke-width:0;stroke:none;fill:rgba(238,238,238,1.0);font-size:15.3px;font-family:'Roboto Medium',sans-serif\">Inquiry</text><path d=\"M 444 9\nL 474 9\" style=\"stroke-width:3;stroke:rgba(154,100,180,1.0);fill:rgba(154,100,180,1.0)\"/><circle cx=\"459\" cy=\"9\" r=\"5\" style=\"stroke-width:3;stroke:rgba(154,100,180,1.0);fill:rgba(154,100,180,1.0)\"/><path d=\"\" style=\"stroke-width:3;stroke:rgba(154,100,180,1.0);fill:rgba(154,100,180,1.0)\"/><text x=\"476\" y=\"15\" style=\"stroke-width:0;stroke:none;fill:rgba(238,238,238,1.0);font-size:15.3px;font-family:'Roboto Medium',sans-serif\">Order</text><text x=\"0\" y=\"15\" style=\"stroke-width:0;stroke:none;fill:rgba(238,238,238,1.0);font-size:15.3px;font-family:'Roboto Medium',sans-serif\">Funnel</text><path d=\"M 0 35\nL 600 35\nL 540 100\nL 60 100\nL 0 35\" style=\"stroke-width:0;stroke:none;fill:rgba(255,100,100,1.0)\"/><text x=\"280\" y=\"67\" style=\"stroke-width:0;stroke:none;fill:rgba(238,238,238,1.0);font-size:12.8px;font-family:'Roboto Medium',sans-serif\">(100%)</text><path d=\"M 60 102\nL 540 102\nL 480 167\nL 120 167\nL 60 102\" style=\"stroke-width:0;stroke:none;fill:rgba(255,210,100,1.0)\"/><text x=\"284\" y=\"134\" style=\"stroke-width:0;stroke:none;fill:rgba(238,238,238,1.0);font-size:12.8px;font-family:'Roboto Medium',sans-serif\">(80%)</text><path d=\"M 120 169\nL 480 169\nL 420 234\nL 180 234\nL 120 169\" style=\"stroke-width:0;stroke:none;fill:rgba(100,180,210,1.0)\"/><text x=\"284\" y=\"201\" style=\"stroke-width:0;stroke:none;fill:rgba(238,238,238,1.0);font-size:12.8px;font-family:'Roboto Medium',sans-serif\">(60%)</text><path d=\"M 180 236\nL 420 236\nL 360 301\nL 240 301\nL 180 236\" style=\"stroke-width:0;stroke:none;fill:rgba(64,160,110,1.0)\"/><text x=\"284\" y=\"268\" style=\"stroke-width:0;stroke:none;fill:rgba(238,238,238,1.0);font-size:12.8px;font-family:'Roboto Medium',sans-serif\">(40%)</text><path d=\"M 240 303\nL 360 303\nL 300 368\nL 300 368\nL 240 303\" style=\"stroke-width:0;stroke:none;fill:rgba(154,100,180,1.0)\"/><text x=\"284\" y=\"335\" style=\"stroke-width:0;stroke:none;fill:rgba(238,238,238,1.0);font-size:12.8px;font-family:'Roboto Medium',sans-serif\">(20%)</text></svg>",
},
}

for i, tt := range tests {
t.Run(strconv.Itoa(i), func(t *testing.T) {
p, err := NewPainter(PainterOptions{
Type: ChartOutputSVG,
Width: 600,
Height: 400,
}, PainterThemeOption(GetTheme(ThemeLight)))
require.NoError(t, err)
data, err := tt.render(p)
require.NoError(t, err)
assert.Equal(t, tt.result, string(data))
})
for _, tt := range tests {
painterOptions := PainterOptions{
Type: ChartOutputSVG,
Width: 600,
Height: 400,
}
if tt.defaultTheme {
t.Run(tt.name, func(t *testing.T) {
p, err := NewPainter(painterOptions)
require.NoError(t, err)

validateFunnelChartRender(t, p, tt.makeOptions(), tt.result)
})
} else {
t.Run(tt.name+"-painter", func(t *testing.T) {
p, err := NewPainter(painterOptions, PainterThemeOption(GetTheme(ThemeVividDark)))
require.NoError(t, err)

validateFunnelChartRender(t, p, tt.makeOptions(), tt.result)
})
t.Run(tt.name+"-options", func(t *testing.T) {
p, err := NewPainter(painterOptions)
require.NoError(t, err)
opt := tt.makeOptions()
opt.Theme = GetTheme(ThemeVividDark)

validateFunnelChartRender(t, p, opt, tt.result)
})
}
}
}

func validateFunnelChartRender(t *testing.T, p *Painter, opt FunnelChartOption, expectedResult string) {
t.Helper()

_, err := NewFunnelChart(p, opt).Render()
require.NoError(t, err)
data, err := p.Bytes()
require.NoError(t, err)
assertEqualSVG(t, expectedResult, string(data))
}
7 changes: 4 additions & 3 deletions horizontal_bar_chart.go
View file
Original file line number Diff line number Diff line change
Expand Up @@ -32,9 +32,6 @@ type HorizontalBarChartOption struct {

// NewHorizontalBarChart returns a horizontal bar chart renderer
func NewHorizontalBarChart(p *Painter, opt HorizontalBarChartOption) *horizontalBarChart {
if opt.Theme == nil {
opt.Theme = getPreferredTheme(p.theme)
}
return &horizontalBarChart{
p: p,
opt: &opt,
Expand Down Expand Up @@ -151,6 +148,10 @@ func (h *horizontalBarChart) render(result *defaultRenderResult, seriesList Seri
func (h *horizontalBarChart) Render() (Box, error) {
p := h.p
opt := h.opt
if opt.Theme == nil {
opt.Theme = getPreferredTheme(p.theme)
}

renderResult, err := defaultRender(p, defaultRenderOption{
Theme: opt.Theme,
Padding: opt.Padding,
Expand Down
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