88 lines
2.6 KiB
Go
88 lines
2.6 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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// The font of x axis
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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 ColorPalette
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// The font size of x axis label
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FontSize float64
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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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// The position of axis, it can be 'top' or 'bottom'
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Position string
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// The line color of axis
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StrokeColor Color
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// The color of label
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FontColor Color
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}
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const defaultXAxisHeight = 30
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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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func (opt *XAxisOption) ToAxisPainterOption() AxisPainterOption {
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position := PositionBottom
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if opt.Position == PositionTop {
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position = PositionTop
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}
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return AxisPainterOption{
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Theme: opt.Theme,
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Data: opt.Data,
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BoundaryGap: opt.BoundaryGap,
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Position: position,
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SplitNumber: opt.SplitNumber,
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StrokeColor: opt.StrokeColor,
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FontSize: opt.FontSize,
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Font: opt.Font,
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FontColor: opt.FontColor,
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}
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}
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func NewBottomXAxis(p *Painter, opt XAxisOption) *axisPainter {
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p = p.Child(PainterPaddingOption(Box{
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Top: p.Height() - defaultXAxisHeight,
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}))
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return NewAxisPainter(p, opt.ToAxisPainterOption())
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}
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