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// Copyright 2019-2022 Graham Clark. All rights reserved. Use of this source
// code is governed by the MIT license that can be found in the LICENSE
// file.
// Package asciigraph provides a simple plotting widget.
package asciigraph
import (
"strings"
"unicode/utf8"
"github.com/gcla/gowid"
"github.com/gcla/gowid/gwutil"
"github.com/gcla/gowid/widgets/fill"
"github.com/guptarohit/asciigraph"
)
//======================================================================
type IAsciiGraph interface {
GetData() []float64
GetConf() []asciigraph.Option
}
type IWidget interface {
gowid.IWidget
IAsciiGraph
}
type Widget struct {
Data []float64
Conf []asciigraph.Option
gowid.RejectUserInput
gowid.NotSelectable
}
func New(series []float64, config []asciigraph.Option) *Widget {
res := &Widget{}
res.Data = series
res.Conf = config
var _ IWidget = res
return res
}
func (w *Widget) String() string {
return "asciigraph"
}
func (w *Widget) GetData() []float64 {
return w.Data
}
func (w *Widget) SetData(data []float64, app gowid.IApp) {
w.Data = data
}
func (w *Widget) GetConf() []asciigraph.Option {
return w.Conf
}
func (w *Widget) SetConf(conf []asciigraph.Option, app gowid.IApp) {
w.Conf = conf
}
func (w *Widget) RenderSize(size gowid.IRenderSize, focus gowid.Selector, app gowid.IApp) gowid.IRenderBox {
return RenderSize(w, size, focus, app)
}
func (w *Widget) Render(size gowid.IRenderSize, focus gowid.Selector, app gowid.IApp) gowid.ICanvas {
return Render(w, size, focus, app)
}
//''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
// TODO: ILineWidget?
func RenderSize(w IWidget, size gowid.IRenderSize, focus gowid.Selector, app gowid.IApp) gowid.IRenderBox {
return gowid.CalculateRenderSizeFallback(w, size, focus, app)
}
func Render(w IAsciiGraph, size gowid.IRenderSize, focus gowid.Selector, app gowid.IApp) gowid.ICanvas {
grender := strings.Split(asciigraph.Plot(w.GetData(), w.GetConf()...), "\n")
rows := len(grender)
cols := 0
if rows > 0 {
cols = utf8.RuneCountInString(grender[0])
}
switch sz := size.(type) {
case gowid.IRenderBox:
cols = sz.BoxColumns()
rows = sz.BoxRows()
case gowid.IRenderFlowWith:
panic(gowid.WidgetSizeError{Widget: w, Size: size})
}
blank := fill.NewEmpty()
res := blank.Render(gowid.RenderBox{C: cols, R: rows}, gowid.NotSelected, app)
for y := 0; y < gwutil.Min(len(grender), res.BoxRows()); y++ {
x := 0
for _, r := range grender[y] {
if x >= res.BoxColumns() {
break
}
res.SetCellAt(x, y, res.CellAt(x, y).WithRune(r))
x++
}
}
return res
}
//======================================================================
// Local Variables:
// mode: Go
// fill-column: 110
// End:
|
