140 lines
3.3 KiB
Go
140 lines
3.3 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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"math"
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"github.com/dustin/go-humanize"
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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 SeriesData struct {
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Value float64
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Style chart.Style
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}
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type Point struct {
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X int
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Y int
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}
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type Series struct {
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Type string
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Data []SeriesData
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YAxisIndex int
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Style chart.Style
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}
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type ChartOption struct {
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Theme string
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Title TitleOption
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Legend LegendOption
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XAxis XAxisOption
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Width int
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Height int
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Parent *Draw
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Padding chart.Box
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SeriesList []Series
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BackgroundColor drawing.Color
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}
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func (o *ChartOption) FillDefault(t *Theme) {
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f, _ := chart.GetDefaultFont()
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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.Title.Style.FontColor.IsZero() {
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o.Title.Style.FontColor = t.GetTextColor()
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}
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if o.Title.Style.FontSize == 0 {
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o.Title.Style.FontSize = 14
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}
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if o.Title.Style.Font == nil {
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o.Title.Style.Font = f
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}
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if o.Title.Style.Padding.IsZero() {
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o.Title.Style.Padding = chart.Box{
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Left: 5,
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Top: 5,
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Right: 5,
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Bottom: 5,
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}
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}
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if o.Legend.Style.FontSize == 0 {
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o.Legend.Style.FontSize = 8
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}
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if o.Legend.Style.Font == nil {
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o.Legend.Style.Font = f
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}
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if o.Legend.Style.FontColor.IsZero() {
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o.Legend.Style.FontColor = t.GetTextColor()
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}
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}
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func (o *ChartOption) getWidth() int {
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if o.Width == 0 {
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return 600
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}
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return o.Width
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}
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func (o *ChartOption) getHeight() int {
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if o.Height == 0 {
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return 400
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}
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return o.Height
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}
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func (o *ChartOption) getYRange(axisIndex int) Range {
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min := math.MaxFloat64
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max := -math.MaxFloat64
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for _, series := range o.SeriesList {
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if series.YAxisIndex != axisIndex {
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continue
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}
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for _, item := range series.Data {
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if item.Value > max {
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max = item.Value
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}
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if item.Value < min {
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min = item.Value
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}
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}
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}
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// y轴分设置默认划分为6块
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r := NewRange(min*0.9, max*1.1, 6)
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return r
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}
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func (r Range) Values() []string {
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offset := (r.Max - r.Min) / float64(r.divideCount)
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values := make([]string, 0)
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for i := 0; i <= r.divideCount; i++ {
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v := r.Min + float64(i)*offset
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value := humanize.CommafWithDigits(v, 2)
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values = append(values, value)
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}
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return values
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}
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