0

CryptoCurrency Updates – Fyne Golang Gui tutorial 74

CryptoCurrency Updates – Fyne Golang Gui tutorial 74

[sourcecode language=”go” autolinks=”false” classname=”myclass” collapse=”false” firstline=”1″ gutter=”true” highlight=”1-3,6,9″ htmlscript=”false” light=”false” padlinenumbers=”false” smarttabs=”true” tabsize=”4″ toolbar=”false” title=”Source Code main.go”] package main

import (
"encoding/json"
"fmt"
"image/color"
"io/ioutil"
"net/http"

"fyne.io/fyne/v2"
"fyne.io/fyne/v2/app"
"fyne.io/fyne/v2/canvas"
"fyne.io/fyne/v2/container"
"fyne.io/fyne/v2/widget"
)

func main() {
a := app.NewWithID("")
w := a.NewWindow("Bitcoin Updates App")
w.Resize(fyne.NewSize(300, 400))
URL := "https://api.coindesk.com/v1/bpi/currentprice.json"
//API
res, _ := http.Get(URL)
defer res.Body.Close()
body, _ := ioutil.ReadAll(res.Body)
coinDisk, _ := UnmarshalCoinDisk(body)
fmt.Println(coinDisk)
label1 := canvas.NewText(coinDisk.ChartName+" Chart", color.Black)
label1.Alignment = fyne.TextAlignCenter
label1.TextStyle = fyne.TextStyle{Bold: true}
s1 := fmt.Sprintf("Code: %s", coinDisk.Bpi.Usd.Code)
s2 := fmt.Sprintf("Rate: %s", coinDisk.Bpi.Usd.Rate)
s3 := fmt.Sprintf("Desc: %s", coinDisk.Bpi.Usd.Description)
s4 := fmt.Sprintf("RateFloat: %.2f", coinDisk.Bpi.Usd.RateFloat)
grid := widget.NewTextGridFromString(s1 + "\n" + s2 + "\n" + s3 + "\n" + s4 + "\n")
grid.SetStyleRange(4, 0, 7, 7, &widget.CustomTextGridStyle{BGColor: color.NRGBA{R: 64, G: 64, B: 192, A: 128}})
grid.Rows[1].Style =
&widget.CustomTextGridStyle{BGColor: color.NRGBA{R: 64, G: 64, B: 64, A: 128}}
grid.ShowLineNumbers = true
grid.ShowWhitespace = true
r1 := fmt.Sprintf("Code: %s", coinDisk.Bpi.Eur.Code)
r2 := fmt.Sprintf("Rate: %s", coinDisk.Bpi.Eur.Rate)
r3 := fmt.Sprintf("Desc: %s", coinDisk.Bpi.Eur.Description)
r4 := fmt.Sprintf("RateFloat: %.2f", coinDisk.Bpi.Eur.RateFloat)
grid2 := widget.NewTextGridFromString(r1 + "\n" + r2 + "\n" + r3 + "\n" + r4 + "\n")
grid2.SetStyleRange(4, 0, 7, 7,
&widget.CustomTextGridStyle{BGColor: color.NRGBA{R: 192, G: 64, B: 192, A: 128}})
grid2.Rows[1].Style =
&widget.CustomTextGridStyle{BGColor: color.NRGBA{R: 64, G: 192, B: 64, A: 128}}
grid2.ShowLineNumbers = true
grid2.ShowWhitespace = true
v1 := fmt.Sprintf("Code: %s", coinDisk.Bpi.Gbp.Code)
v2 := fmt.Sprintf("Rate: %s", coinDisk.Bpi.Gbp.Rate)
v3 := fmt.Sprintf("Desc: %s", coinDisk.Bpi.Gbp.Description)
v4 := fmt.Sprintf("RateFloat: %.2f", coinDisk.Bpi.Gbp.RateFloat)
grid3 := widget.NewTextGridFromString(v1 + "\n" + v2 + "\n" + v3 + "\n" + v4 + "\n")
grid3.SetStyleRange(4, 0, 7, 7,
&widget.CustomTextGridStyle{BGColor: color.NRGBA{R: 0, G: 64, B: 192, A: 128}})
grid3.Rows[1].Style =
&widget.CustomTextGridStyle{BGColor: color.NRGBA{R: 192, G: 192, B: 64, A: 128}}
grid3.ShowLineNumbers = true
grid3.ShowWhitespace = true
img := canvas.NewImageFromFile("bitcoin-icon.jpg")
img.FillMode = canvas.ImageFillOriginal
e := container.NewVBox(label1, grid, grid2, grid3)
e.Resize(fyne.NewSize(300, 300))
c := container.NewBorder(img, nil, nil, nil, e)
w.SetContent(c)
w.ShowAndRun()
}

// This file was generated from JSON Schema using quicktype, do not modify it directly.
// To parse and unparse this JSON data, add this code to your project and do:
//
// coinDisk, err := UnmarshalCoinDisk(bytes)
// bytes, err = coinDisk.Marshal()
func UnmarshalCoinDisk(data []byte) (CoinDisk, error) {
var r CoinDisk
err := json.Unmarshal(data, r)
return r, err
}
func (r *CoinDisk) Marshal() ([]byte, error) {
return json.Marshal(r)
}

type CoinDisk struct {
Time Time `json:"time"`
Disclaimer string `json:"disclaimer"`
ChartName string `json:"chartName"`
Bpi Bpi `json:"bpi"`
}
type Bpi struct {
Usd Eur `json:"USD"`
Gbp Eur `json:"GBP"`
Eur Eur `json:"EUR"`
}
type Eur struct {
Code string `json:"code"`
Symbol string `json:"symbol"`
Rate string `json:"rate"`
Description string `json:"description"`
RateFloat float64 `json:"rate_float"`
}
type Time struct {
Updated string `json:"updated"`
UpdatedISO string `json:"updatedISO"`
Updateduk string `json:"updateduk"`
}

[/sourcecode] [easy_media_download url=”https://blogvali.com/wp-content/uploads/2022/11/main74.zip” text=”Download Code” color=”red_darker”]