93 lines
2.5 KiB
Go
93 lines
2.5 KiB
Go
// MIT License
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// Copyright (c) 2021 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/wcharczuk/go-chart/v2"
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)
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type Range struct {
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TickPosition chart.TickPosition
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chart.ContinuousRange
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}
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func wrapRange(r chart.Range, tickPosition chart.TickPosition) chart.Range {
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xr, ok := r.(*chart.ContinuousRange)
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if !ok {
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return r
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}
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return &Range{
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TickPosition: tickPosition,
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ContinuousRange: *xr,
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}
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}
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// Translate maps a given value into the ContinuousRange space.
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func (r Range) Translate(value float64) int {
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v := r.ContinuousRange.Translate(value)
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if r.TickPosition == chart.TickPositionBetweenTicks {
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v -= int(float64(r.Domain) / (r.GetDelta() * 2))
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}
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return v
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}
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type HiddenRange struct {
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chart.ContinuousRange
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}
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func (r HiddenRange) GetDelta() float64 {
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return 0
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}
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// Y轴使用的continuous range
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// min 与max只允许设置一次
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// 如果是计算得出的max，增加20%的值并取整
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type YContinuousRange struct {
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chart.ContinuousRange
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}
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func (m YContinuousRange) IsZero() bool {
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// 默认返回true，允许修改
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return true
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}
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func (m *YContinuousRange) SetMin(min float64) {
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// 如果已修改，则忽略
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if m.Min != -math.MaxFloat64 {
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return
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}
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m.Min = min
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}
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func (m *YContinuousRange) SetMax(max float64) {
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// 如果已修改，则忽略
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if m.Max != math.MaxFloat64 {
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return
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}
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// 此处为计算得来的最大值，放大20%
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v := int(max * 1.2)
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// TODO 是否要取整十整百
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m.Max = float64(v)
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}
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