mirror of
https://github.com/taigrr/gico.git
synced 2026-04-02 03:09:07 -07:00
104 lines
2.7 KiB
Go
104 lines
2.7 KiB
Go
package svg
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import (
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"bufio"
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"bytes"
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"fmt"
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"image"
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"image/png"
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"os"
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"sync"
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svg "github.com/ajstarks/svgo"
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"github.com/srwiley/oksvg"
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"github.com/srwiley/rasterx"
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sc "github.com/taigrr/simplecolorpalettes/simplecolor"
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"github.com/taigrr/gico/graph/common"
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)
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var (
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colorsLoaded sync.Once
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colorScheme []sc.SimpleColor
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)
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func GetWeekSVG(frequencies []int) bytes.Buffer {
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squareColors := []sc.SimpleColor{}
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min, max := common.MinMax(frequencies)
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for _, f := range frequencies {
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squareColors = append(squareColors, common.ColorForFrequency(f, min, max))
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}
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return drawWeekImage(squareColors, frequencies)
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}
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func drawWeekImage(c []sc.SimpleColor, freq []int) bytes.Buffer {
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var sb bytes.Buffer
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sbw := bufio.NewWriter(&sb)
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squareLength := 10
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width := (len(c) + 1) * squareLength * 2
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height := squareLength * 2
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canvas := svg.New(sbw)
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canvas.Start(width, height)
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canvas.Rect(0, 0, width, height, "fill:black")
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for i, s := range c {
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canvas.Square(squareLength*2*(i+1), squareLength/2, squareLength, fmt.Sprintf("fill:%s; value:%d", s.ToHex(), freq[i]))
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}
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canvas.End()
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sbw.Flush()
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return sb
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}
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func GetYearSVG(frequencies []int) bytes.Buffer {
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squareColors := []sc.SimpleColor{}
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min, max := common.MinMax(frequencies)
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for _, f := range frequencies {
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squareColors = append(squareColors, common.ColorForFrequency(f, min, max))
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}
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return drawYearImage(squareColors)
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}
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func drawYearImage(c []sc.SimpleColor) bytes.Buffer {
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var sb bytes.Buffer
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sbw := bufio.NewWriter(&sb)
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squareLength := 10
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width := (len(c)/7+1)*squareLength*2 + squareLength*5
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height := squareLength*9 + squareLength*3
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canvas := svg.New(sbw)
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canvas.Start(width, height)
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for i, s := range c {
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canvas.Square(2*squareLength+width/(len(c)/7+1)*(i/7)+squareLength*2, squareLength/2+height/7*(i%7), squareLength, fmt.Sprintf("fill:%s", s.ToHex()))
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}
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// canvas.Text(2*squareLength, squareLength*3, "Mon", fmt.Sprintf("text-anchor:middle;font-size:%dpx;fill:black", squareLength))
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// canvas.Text(2*squareLength, int(float64(squareLength)*6.5), "Wed", fmt.Sprintf("text-anchor:middle;font-size:%dpx;fill:black", squareLength))
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// canvas.Text(2*squareLength, int(float64(squareLength))*10, "Fri", fmt.Sprintf("text-anchor:middle;font-size:%dpx;fill:black", squareLength))
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canvas.End()
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sbw.Flush()
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return sb
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}
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func svgToPng() {
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w, h := 512, 512
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in, err := os.Open("in.svg")
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if err != nil {
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panic(err)
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}
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defer in.Close()
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icon, _ := oksvg.ReadIconStream(in)
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icon.SetTarget(0, 0, float64(w), float64(h))
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rgba := image.NewRGBA(image.Rect(0, 0, w, h))
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icon.Draw(rasterx.NewDasher(w, h, rasterx.NewScannerGV(w, h, rgba, rgba.Bounds())), 1)
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out, err := os.Create("out.png")
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if err != nil {
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panic(err)
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}
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defer out.Close()
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err = png.Encode(out, rgba)
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if err != nil {
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panic(err)
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}
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}
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