113 lines
2.8 KiB
Go
113 lines
2.8 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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"github.com/wcharczuk/go-chart/v2"
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"github.com/wcharczuk/go-chart/v2/drawing"
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)
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type LineChartOption struct {
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ChartOption
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}
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func NewLineChart(opt LineChartOption) (*Draw, error) {
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d, err := NewDraw(
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DrawOption{
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Parent: opt.Parent,
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Width: opt.getWidth(),
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Height: opt.getHeight(),
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},
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PaddingOption(opt.Padding),
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)
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if err != nil {
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return nil, err
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}
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theme := Theme{
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mode: opt.Theme,
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}
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opt.FillDefault(&theme)
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if opt.Parent == nil {
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d.setBackground(opt.getWidth(), opt.getHeight(), opt.BackgroundColor)
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}
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// 标题
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titleBox, err := drawTitle(d, &opt.Title)
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if err != nil {
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return nil, err
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}
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_, err = NewLegend(d, opt.Legend).Render()
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if err != nil {
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return nil, err
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}
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// xAxis
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xAxisHeight, xRange, err := drawXAxis(d, &opt.XAxis, &theme)
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if err != nil {
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return nil, err
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}
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// 暂时仅支持单一yaxis
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yRange, err := drawYAxis(d, &opt.ChartOption, &theme, xAxisHeight, chart.Box{
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Top: titleBox.Height(),
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})
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if err != nil {
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return nil, err
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}
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sd, err := NewDraw(DrawOption{
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Parent: d,
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}, PaddingOption(chart.Box{
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Top: titleBox.Height(),
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Left: YAxisWidth,
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}))
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if err != nil {
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return nil, err
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}
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for i, series := range opt.SeriesList {
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points := make([]Point, 0)
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for j, item := range series.Data {
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y := yRange.getHeight(item.Value)
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points = append(points, Point{
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Y: y,
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X: xRange.getWidth(float64(j)),
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})
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seriesColor := theme.GetSeriesColor(i)
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dotFillColor := drawing.ColorWhite
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if theme.IsDark() {
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dotFillColor = seriesColor
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}
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sd.Line(points, LineStyle{
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StrokeColor: seriesColor,
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StrokeWidth: 2,
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DotColor: seriesColor,
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DotWidth: 2,
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DotFillColor: dotFillColor,
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})
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}
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}
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return d, nil
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}
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