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main.go
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main.go
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package main
import (
"fmt"
"time"
"fyne.io/fyne/v2"
"fyne.io/fyne/v2/app"
"fyne.io/fyne/v2/container"
"fyne.io/fyne/v2/dialog"
"fyne.io/fyne/v2/widget"
"fyne.io/x/fyne/layout"
)
func main() {
app := app.New()
window := app.NewWindow("Responsive")
window.Resize(fyne.Size{Width: 320, Height: 480})
// just a button
button := widget.NewButton("Click me", func() {
dialog.NewInformation("Hello", "Hello World", window).Show()
})
resp := layout.NewResponsiveLayout(
presentation(), // 100% by default
winSizeLabel(window), // 100% by default
layout.Responsive(
widget.NewButton("One !", func() {}),
1, .33,
),
layout.Responsive(
widget.NewButton("Two !", func() {}),
1, .33,
),
layout.Responsive(
widget.NewButton("Three !", func() {}),
1, .34,
),
layout.Responsive(fromLayout(), 1, .5), // 100% for small, 50% for others
layout.Responsive(fromLayout(), 1, .5), // 100% for small, 50% for others
button, // 100% by default
)
window.SetContent(
container.NewVScroll(resp),
)
window.ShowAndRun()
}
// winSizeLabel returns a label with the current window size inside
func winSizeLabel(window fyne.Window) fyne.CanvasObject {
label := widget.NewLabel("")
label.Wrapping = fyne.TextWrapWord
label.Alignment = fyne.TextAlignCenter
go func() {
// when window is resized, the label will be updated
time.Sleep(time.Millisecond * 1000)
canvas := window.Canvas()
for {
time.Sleep(time.Millisecond * 100)
if canvas.Size().Width <= float32(layout.SMALL) {
label.SetText(fmt.Sprintf("Extra small devicce %v <= %v", canvas.Size().Width, layout.SMALL))
} else if canvas.Size().Width <= float32(layout.MEDIUM) {
label.SetText(fmt.Sprintf("Small device %v <= %v", canvas.Size().Width, layout.MEDIUM))
} else if canvas.Size().Width <= float32(layout.LARGE) {
label.SetText(fmt.Sprintf("Medium device %v <= %v", canvas.Size().Width, layout.LARGE))
} else if canvas.Size().Width <= float32(layout.XLARGE) {
label.SetText(fmt.Sprintf("Large device %v <= %v", canvas.Size().Width, layout.XLARGE))
} else {
label.SetText(fmt.Sprintf("Extra large device %v > %v", canvas.Size().Width, layout.LARGE))
}
}
}()
return label
}
// presentation returns a container with a title text in bold / italic
func presentation() fyne.CanvasObject {
label := widget.NewLabel("Example of responsive layout")
label.TextStyle = fyne.TextStyle{Bold: true, Italic: true}
label.Alignment = fyne.TextAlignCenter
return label
}
// fromLayout returns responsive layout where label and entries width ratios are set.
// Each label will:
// - be 100% width for small device
// - be 25% for medium device
// - be 33% for larger device
// And to make entry to be adapted
// - be 100% width for small device
// - be 75% for medium device (100 - 25% from the label)
// - be 67% for larger device (100 - 33% from the label)
func fromLayout() fyne.CanvasObject {
title := widget.NewLabel(
"This container should be 100% width of small device and 50% for larger.\n" +
"The labels are sized to 100% width for small devices, 25% for medium and 33% for larger")
title.Alignment = fyne.TextAlignCenter
title.Wrapping = fyne.TextWrapWord
label := widget.NewLabel("Give your name")
label.Wrapping = fyne.TextWrapWord
entry := widget.NewEntry()
label2 := widget.NewLabel("Give your age")
label2.Wrapping = fyne.TextWrapWord
entry2 := widget.NewEntry()
label3 := widget.NewLabel("Give your email")
label3.Wrapping = fyne.TextWrapWord
entry3 := widget.NewEntry()
labelw := float32(.25)
entryw := float32(.75)
labelx := 1 / float32(3)
entryx := 1 - labelx
return layout.NewResponsiveLayout(
title,
layout.Responsive(label, 1, 1, labelw, labelx),
layout.Responsive(entry, 1, 1, entryw, entryx),
layout.Responsive(label2, 1, 1, labelw, labelx),
layout.Responsive(entry2, 1, 1, entryw, entryx),
layout.Responsive(label3, 1, 1, labelw, labelx),
layout.Responsive(entry3, 1, 1, entryw, entryx),
)
}