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grid.go
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grid.go
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// 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
type gridPainter struct {
p *Painter
opt *GridPainterOption
}
type GridPainterOption struct {
// The stroke width
StrokeWidth float64
// The stroke color
StrokeColor Color
// The spans of column
ColumnSpans []int
// The column of grid
Column int
// The row of grid
Row int
// Ignore first row
IgnoreFirstRow bool
// Ignore last row
IgnoreLastRow bool
// Ignore first column
IgnoreFirstColumn bool
// Ignore last column
IgnoreLastColumn bool
}
// NewGridPainter returns new a grid renderer
func NewGridPainter(p *Painter, opt GridPainterOption) *gridPainter {
return &gridPainter{
p: p,
opt: &opt,
}
}
func (g *gridPainter) Render() (Box, error) {
opt := g.opt
ignoreColumnLines := make([]int, 0)
if opt.IgnoreFirstColumn {
ignoreColumnLines = append(ignoreColumnLines, 0)
}
if opt.IgnoreLastColumn {
ignoreColumnLines = append(ignoreColumnLines, opt.Column)
}
ignoreRowLines := make([]int, 0)
if opt.IgnoreFirstRow {
ignoreRowLines = append(ignoreRowLines, 0)
}
if opt.IgnoreLastRow {
ignoreRowLines = append(ignoreRowLines, opt.Row)
}
strokeWidth := opt.StrokeWidth
if strokeWidth <= 0 {
strokeWidth = 1
}
g.p.SetDrawingStyle(Style{
StrokeWidth: strokeWidth,
StrokeColor: opt.StrokeColor,
})
g.p.Grid(GridOption{
Column: opt.Column,
ColumnSpans: opt.ColumnSpans,
Row: opt.Row,
IgnoreColumnLines: ignoreColumnLines,
IgnoreRowLines: ignoreRowLines,
})
return g.p.box, nil
}