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container.go
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container.go
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package screens
import (
"fmt"
"image/color"
"net/url"
"fyne.io/fyne"
"fyne.io/fyne/canvas"
"fyne.io/fyne/container"
"fyne.io/fyne/theme"
"fyne.io/fyne/widget"
)
// ContainerScreen loads a tab panel for containers and layouts
func ContainerScreen() fyne.CanvasObject {
return container.NewAppTabs( // TODO not best use of tabs here either
container.NewTabItem("Accordion", makeAccordionTab()),
container.NewTabItem("Card", makeCardTab()),
container.NewTabItem("Split", makeSplitTab()),
container.NewTabItem("Scroll", makeScrollTab()),
// layouts
container.NewTabItem("Border", makeBorderLayout()),
container.NewTabItem("Box", makeBoxLayout()),
container.NewTabItem("Center", makeCenterLayout()),
container.NewTabItem("Grid", makeGridLayout()),
)
}
func makeAccordionTab() fyne.CanvasObject {
link, err := url.Parse("https://fyne.io/")
if err != nil {
fyne.LogError("Could not parse URL", err)
}
ac := widget.NewAccordion(
widget.NewAccordionItem("A", widget.NewHyperlink("One", link)),
widget.NewAccordionItem("B", widget.NewLabel("Two")),
&widget.AccordionItem{
Title: "C",
Detail: widget.NewLabel("Three"),
},
)
ac.Append(widget.NewAccordionItem("D", &widget.Entry{Text: "Four"}))
return ac
}
func makeBorderLayout() *fyne.Container {
top := makeCell()
bottom := makeCell()
left := makeCell()
right := makeCell()
middle := widget.NewLabelWithStyle("BorderLayout", fyne.TextAlignCenter, fyne.TextStyle{})
return container.NewBorder(top, bottom, left, right, middle)
}
func makeBoxLayout() *fyne.Container {
top := makeCell()
bottom := makeCell()
middle := widget.NewLabel("BoxLayout")
center := makeCell()
right := makeCell()
col := container.NewVBox(top, middle, bottom)
return container.NewHBox(col, center, right)
}
func makeButtonList(count int) []fyne.CanvasObject {
var items []fyne.CanvasObject
for i := 1; i <= count; i++ {
index := i // capture
items = append(items, widget.NewButton(fmt.Sprintf("Button %d", index), func() {
fmt.Println("Tapped", index)
}))
}
return items
}
func makeCardTab() fyne.CanvasObject {
card1 := widget.NewCard("Book a table", "Which time suits?",
widget.NewRadio([]string{"6:30pm", "7:00pm", "7:45pm"}, func(string) {}))
card2 := widget.NewCard("With media", "No content, with image", nil)
card2.Image = canvas.NewImageFromResource(theme.FyneLogo())
card3 := widget.NewCard("Title 3", "Subtitle", widget.NewCheck("Check me", func(bool) {}))
card4 := widget.NewCard("Title 4", "Another card", widget.NewLabel("Content"))
return container.NewGridWithColumns(3, container.NewVBox(card1, card4),
container.NewVBox(card2), container.NewVBox(card3))
}
func makeCell() fyne.CanvasObject {
rect := canvas.NewRectangle(&color.NRGBA{128, 128, 128, 255})
rect.SetMinSize(fyne.NewSize(30, 30))
return rect
}
func makeCenterLayout() *fyne.Container {
middle := widget.NewButton("CenterLayout", func() {})
return container.NewCenter(middle)
}
func makeGridLayout() *fyne.Container {
box1 := makeCell()
box2 := widget.NewLabel("Grid")
box3 := makeCell()
box4 := makeCell()
return container.NewGridWithColumns(2,
box1, box2, box3, box4)
}
func makeScrollTab() fyne.CanvasObject {
hlist := makeButtonList(20)
vlist := makeButtonList(50)
horiz := container.NewHScroll(widget.NewHBox(hlist...))
vert := container.NewVScroll(widget.NewVBox(vlist...))
return container.NewAdaptiveGrid(2,
container.NewBorder(horiz, nil, nil, nil, vert),
makeScrollBothTab())
}
func makeScrollBothTab() fyne.CanvasObject {
logo := canvas.NewImageFromResource(theme.FyneLogo())
logo.SetMinSize(fyne.NewSize(800, 800))
scroll := container.NewScroll(logo)
scroll.Resize(fyne.NewSize(400, 400))
return scroll
}
func makeSplitTab() fyne.CanvasObject {
left := widget.NewMultiLineEntry()
left.Wrapping = fyne.TextWrapWord
left.SetText("Long text is looooooooooooooong")
right := container.NewVSplit(
widget.NewLabel("Label"),
widget.NewButton("Button", func() { fmt.Println("button tapped!") }),
)
return container.NewHSplit(container.NewVScroll(left), right)
}