120 lines
3.4 KiB
Go
120 lines
3.4 KiB
Go
// MIT License
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// Copyright (c) 2022 Tree Xie
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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package charts
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import (
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"sort"
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"github.com/golang/freetype/truetype"
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"github.com/wcharczuk/go-chart/v2"
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)
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type ChartOption struct {
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theme ColorPalette
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font *truetype.Font
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// The output type of chart, "svg" or "png", default value is "svg"
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Type string
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// The font family, which should be installed first
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FontFamily string
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// The theme of chart, "light" and "dark".
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// The default theme is "light"
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Theme string
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// The title option
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Title TitleOption
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// The legend option
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Legend LegendOption
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// The x axis option
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XAxis XAxisOption
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// The y axis option list
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YAxisOptions []YAxisOption
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// The width of chart, default width is 600
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Width int
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// The height of chart, default height is 400
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Height int
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Parent *Painter
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// The padding for chart, default padding is [20, 10, 10, 10]
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Padding Box
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// The canvas box for chart
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Box Box
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// The series list
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SeriesList SeriesList
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// The radar indicator list
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// RadarIndicators []RadarIndicator
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// The background color of chart
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BackgroundColor Color
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// The child charts
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Children []ChartOption
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}
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func (o *ChartOption) fillDefault() {
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t := NewTheme(o.Theme)
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o.theme = t
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// 如果为空，初始化
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axisCount := 1
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for _, series := range o.SeriesList {
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if series.AxisIndex >= axisCount {
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axisCount++
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}
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}
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o.Width = getDefaultInt(o.Width, defaultChartWidth)
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o.Height = getDefaultInt(o.Height, defaultChartHeight)
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yAxisOptions := make([]YAxisOption, axisCount)
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copy(yAxisOptions, o.YAxisOptions)
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o.YAxisOptions = yAxisOptions
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o.font, _ = GetFont(o.FontFamily)
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if o.font == nil {
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o.font, _ = chart.GetDefaultFont()
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}
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if o.BackgroundColor.IsZero() {
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o.BackgroundColor = t.GetBackgroundColor()
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}
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if o.Padding.IsZero() {
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o.Padding = chart.Box{
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Top: 10,
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Right: 10,
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Bottom: 10,
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Left: 10,
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}
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}
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// legend与series name的关联
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if len(o.Legend.Data) == 0 {
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o.Legend.Data = o.SeriesList.Names()
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} else {
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seriesCount := len(o.SeriesList)
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for index, name := range o.Legend.Data {
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if index < seriesCount &&
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len(o.SeriesList[index].Name) == 0 {
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o.SeriesList[index].Name = name
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}
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}
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nameIndexDict := map[string]int{}
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for index, name := range o.Legend.Data {
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nameIndexDict[name] = index
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}
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// 保证series的顺序与legend一致
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sort.Slice(o.SeriesList, func(i, j int) bool {
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return nameIndexDict[o.SeriesList[i].Name] < nameIndexDict[o.SeriesList[j].Name]
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})
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}
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}
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