go-charts/yaxis.go
2022-02-03 21:00:01 +08:00

69 lines
2.1 KiB
Go

// MIT License
// Copyright (c) 2022 Tree Xie
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
package charts
import (
"github.com/wcharczuk/go-chart/v2"
)
type YAxisOption struct {
Min *float64
Max *float64
Hidden bool
}
const YAxisWidth = 40
func drawYAxis(p *Draw, opt *ChartOption, xAxisHeight int, padding chart.Box) (*Range, error) {
theme := NewTheme(opt.Theme)
yRange := opt.getYRange(0)
data := NewAxisDataListFromStringList(yRange.Values())
style := AxisStyle{
Position: PositionLeft,
BoundaryGap: FalseFlag(),
FontColor: theme.GetAxisStrokeColor(),
TickShow: FalseFlag(),
StrokeWidth: 1,
SplitLineColor: theme.GetAxisSplitLineColor(),
SplitLineShow: true,
}
width := NewAxis(p, data, style).measureAxis()
padding.Left += (YAxisWidth - width)
dYAxis, err := NewDraw(
DrawOption{
Parent: p,
Width: p.Box.Width(),
// 减去x轴的高
Height: p.Box.Height() - xAxisHeight,
},
PaddingOption(padding),
)
if err != nil {
return nil, err
}
NewAxis(dYAxis, data, style).Render()
yRange.Size = dYAxis.Box.Height()
return &yRange, nil
}