/
main.go
135 lines (127 loc) · 4.72 KB
/
main.go
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package main
import (
"fmt"
"github.com/golang/freetype"
cg "github.com/iv-menshenin/receipt"
"golang.org/x/image/font/gofont/gobold"
"golang.org/x/image/font/gofont/goregular"
"image"
"image/color"
"image/jpeg"
"image/png"
"math/rand"
"os"
"time"
)
func main() {
rand.Seed(time.Now().UnixNano())
// I can set the dimensions of the canvas by specifying clear measures of length
width := cg.Millimeters(210.0)
height := cg.Millimeters(297.0)
var fontSize float64 = 12
canvasRect := cg.NewRectangle(cg.ZeroPixel(), cg.ZeroPixel(), width, height)
backColor := color.RGBA{255, 255, 255, 255}
frontColor := color.RGBA{46, 46, 46, 255}
accentColor := color.RGBA{198, 46, 46, 255}
// usePen := pen{color: frontColor, weight: int(mmToPix(0.3))}
var palette = color.Palette{
backColor,
frontColor,
accentColor,
}
img := image.NewPaletted(canvasRect, palette)
for nn := 0; nn < img.Bounds().Max.X; nn++ {
for mm := 0; mm < img.Bounds().Max.Y; mm++ {
img.Set(nn, mm, backColor)
}
}
fontFace, err := freetype.ParseFont(goregular.TTF)
if err != nil {
panic(err)
}
fontFaceB, err := freetype.ParseFont(gobold.TTF)
if err != nil {
panic(err)
}
myPen := cg.NewPen(frontColor, cg.Millimeters(0.25))
accPen := cg.NewPen(accentColor, cg.Millimeters(0.25))
canv := cg.NewCanvas(img, img.Rect)
fontOpt := cg.OptionFont(fontFace, fontSize, myPen)
fontAccentOpt := cg.OptionFont(fontFace, fontSize, accPen)
tableMiddFont := cg.OptionFont(fontFace, 9, myPen)
tableSmallFont := cg.OptionFont(fontFace, 8, myPen)
tableSmallFont2 := cg.OptionFont(fontFace, 7, myPen)
tableBoldFont := cg.OptionFont(fontFaceB, 8, myPen)
canv.Write(cg.PaddingLeftRight(cg.Millimeters(5), cg.Lines(
cg.FixedY(cg.Millimeters(5)),
cg.PaddingLeftRight(cg.Millimeters(10), cg.Lines(
cg.Cols(
cg.Text(fmt.Sprintf("Order #%d %s", rand.Int(), time.Now().Format("01.02.2006 15:04")), cg.OptionAlignment(cg.AlignLeft), fontOpt),
cg.Text("DRAFT", cg.OptionAlignment(cg.AlignRight), fontAccentOpt),
),
cg.Text("555-345-65-66 Menshenin Igor", fontOpt),
)),
)))
lastPoint := canv.Write(cg.Padding4(cg.Millimeters(5), cg.Lines(
cg.Table(
[]cg.TableColumn{
cg.Column("PRODUCT NAME", .49, cg.OptionCentered(), tableMiddFont, cg.OptionAlignment(cg.AlignLeft)),
cg.Column("COUNT", .06, cg.OptionCentered(), tableSmallFont2, cg.OptionAlignment(cg.AlignCenter)),
cg.Column("PRICE", .08, cg.OptionCentered(), tableSmallFont, cg.OptionAlignment(cg.AlignRight)),
cg.Column("AMOUNT", .1, cg.OptionCentered(), tableSmallFont, cg.OptionAlignment(cg.AlignRight)),
cg.Column("PRICE WS", .09, cg.OptionCentered(), tableSmallFont, cg.OptionAlignment(cg.AlignRight)),
cg.Column("AMOUNT WS", .1, cg.OptionCentered(), tableSmallFont, cg.OptionAlignment(cg.AlignRight)),
cg.Column("DELIVERY", .08, cg.OptionCentered(), tableSmallFont2, cg.OptionAlignment(cg.AlignRight)),
},
cg.Cols(
cg.Text("Some product name. Pretty stuff with long name. 60x90x12 box everywhere. Light-green. BEER", cg.OptionCentered(), tableSmallFont),
cg.Text("20"),
cg.Text("36.00"),
cg.Text("720.00"),
cg.Text("30.00"),
cg.Text("600.00", accPen),
cg.Text(""),
),
cg.Cols(
cg.Text("Foo and Bar company paper", cg.OptionCentered(), tableSmallFont),
cg.Text("20"),
cg.Text("36.00"),
cg.Text("720.00"),
cg.Text("30.00"),
cg.Text("600.00"),
cg.Text("120.00"),
),
cg.Cols(
cg.Text("SoLongTextWhichNeededToTestToAvoidInfinityIterationAndBadViewAndOtherOtherOtherOtherOther or not", cg.OptionCentered(), tableSmallFont),
cg.Text("20"),
cg.Text("36.00"),
cg.Text("720.00"),
cg.Text("30.00"),
cg.Text("600.00"),
cg.Text("120.00"),
),
cg.Cols(
cg.Empty(),
cg.ColSpan(cg.Text("1440.00", tableBoldFont, cg.OptionAlignment(cg.AlignRight)), 3),
cg.ColSpan(cg.Text("1200.00", tableBoldFont, cg.OptionAlignment(cg.AlignRight)), 2),
cg.Text("120.00", tableBoldFont, cg.OptionAlignment(cg.AlignRight)),
),
cg.Cols(
cg.Text("Total including delivery and fee (retail)", tableBoldFont, cg.OptionAlignment(cg.AlignRight)),
cg.ColSpan(cg.Text("1977.37", tableBoldFont, cg.OptionAlignment(cg.AlignRight)), 6),
),
cg.Cols(
cg.Text("Total including delivery and fee (wholesale)", tableBoldFont, cg.OptionAlignment(cg.AlignRight)),
cg.ColSpan(cg.Text("1812.22", tableBoldFont, cg.OptionAlignment(cg.AlignRight)), 6),
),
),
)))
out := img.SubImage(image.Rect(img.Bounds().Min.X, img.Bounds().Min.Y, img.Bounds().Max.X, lastPoint.Y))
// Кодировать как PNG.
outFile, _ := os.Create("./example/image.png")
png.Encode(outFile, out)
outFile.Close()
outFile, _ = os.Create("./example/image.jpeg")
jpeg.Encode(outFile, out, &jpeg.Options{Quality: 100})
outFile.Close()
}