93 lines
2.7 KiB
Go
93 lines
2.7 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/golang/freetype/truetype"
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)
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type XAxisOption struct {
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Font *truetype.Font
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// The boundary gap on both sides of a coordinate axis.
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// Nil or *true means the center part of two axis ticks
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BoundaryGap *bool
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// The data value of x axis
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Data []string
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// The theme of chart
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Theme string
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// Hidden x axis
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Hidden bool
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// Number of segments that the axis is split into. Note that this number serves only as a recommendation.
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SplitNumber int
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}
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func NewXAxisOption(data []string, boundaryGap ...*bool) XAxisOption {
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opt := XAxisOption{
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Data: data,
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}
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if len(boundaryGap) != 0 {
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opt.BoundaryGap = boundaryGap[0]
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}
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return opt
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}
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// drawXAxis draws x axis, and returns the height, range of if.
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func drawXAxis(p *Painter, opt *XAxisOption, yAxisCount int) (int, *Range, error) {
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if opt.Hidden {
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return 0, nil, nil
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}
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left := YAxisWidth
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right := (yAxisCount - 1) * YAxisWidth
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pXAxis := p.Child(
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PainterPaddingOption(Box{
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Left: left,
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Right: right,
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}),
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PainterFontOption(opt.Font),
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)
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theme := NewTheme(opt.Theme)
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data := NewAxisDataListFromStringList(opt.Data)
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style := AxisOption{
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BoundaryGap: opt.BoundaryGap,
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StrokeColor: theme.GetAxisStrokeColor(),
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FontColor: theme.GetAxisStrokeColor(),
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StrokeWidth: 1,
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SplitNumber: opt.SplitNumber,
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}
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boundary := true
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max := float64(len(opt.Data))
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if isFalse(opt.BoundaryGap) {
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boundary = false
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max--
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}
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axis := NewAxis(pXAxis, data, style)
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axis.Render()
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return axis.measure().Height, &Range{
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divideCount: len(opt.Data),
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Min: 0,
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Max: max,
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Size: pXAxis.Width(),
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Boundary: boundary,
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}, nil
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}
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