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main.go
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main.go
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// Package main provides various examples of Fyne API capabilities.
package main
import (
"fmt"
"net/url"
"fyne.io/fyne"
"fyne.io/fyne/app"
"fyne.io/fyne/canvas"
"fyne.io/fyne/cmd/fyne_demo/data"
"fyne.io/fyne/cmd/fyne_demo/screens"
"fyne.io/fyne/container"
"fyne.io/fyne/layout"
"fyne.io/fyne/theme"
"fyne.io/fyne/widget"
)
const preferenceCurrentTab = "currentTab"
func parseURL(urlStr string) *url.URL {
link, err := url.Parse(urlStr)
if err != nil {
fyne.LogError("Could not parse URL", err)
}
return link
}
func shortcutFocused(s fyne.Shortcut, w fyne.Window) {
if focused, ok := w.Canvas().Focused().(fyne.Shortcutable); ok {
focused.TypedShortcut(s)
}
}
func welcomeScreen(a fyne.App) fyne.CanvasObject {
logo := canvas.NewImageFromResource(data.FyneScene)
if fyne.CurrentDevice().IsMobile() {
logo.SetMinSize(fyne.NewSize(171, 125))
} else {
logo.SetMinSize(fyne.NewSize(228, 167))
}
return widget.NewVBox(
layout.NewSpacer(),
widget.NewLabelWithStyle("Welcome to the Fyne toolkit demo app", fyne.TextAlignCenter, fyne.TextStyle{Bold: true}),
widget.NewHBox(layout.NewSpacer(), logo, layout.NewSpacer()),
widget.NewHBox(layout.NewSpacer(),
widget.NewHyperlink("fyne.io", parseURL("https://fyne.io/")),
widget.NewLabel("-"),
widget.NewHyperlink("documentation", parseURL("https://fyne.io/develop/")),
widget.NewLabel("-"),
widget.NewHyperlink("sponsor", parseURL("https://github.com/sponsors/fyne-io")),
layout.NewSpacer(),
),
layout.NewSpacer(),
widget.NewCard("Choose theme", "",
fyne.NewContainerWithLayout(layout.NewGridLayout(2),
widget.NewButton("Dark", func() {
a.Settings().SetTheme(theme.DarkTheme())
}),
widget.NewButton("Light", func() {
a.Settings().SetTheme(theme.LightTheme())
}),
),
),
)
}
func main() {
a := app.NewWithID("io.fyne.demo")
a.SetIcon(theme.FyneLogo())
w := a.NewWindow("Fyne Demo")
newItem := fyne.NewMenuItem("New", nil)
otherItem := fyne.NewMenuItem("Other", nil)
otherItem.ChildMenu = fyne.NewMenu("",
fyne.NewMenuItem("Project", func() { fmt.Println("Menu New->Other->Project") }),
fyne.NewMenuItem("Mail", func() { fmt.Println("Menu New->Other->Mail") }),
)
newItem.ChildMenu = fyne.NewMenu("",
fyne.NewMenuItem("File", func() { fmt.Println("Menu New->File") }),
fyne.NewMenuItem("Directory", func() { fmt.Println("Menu New->Directory") }),
otherItem,
)
settingsItem := fyne.NewMenuItem("Settings", func() { fmt.Println("Menu Settings") })
cutItem := fyne.NewMenuItem("Cut", func() {
shortcutFocused(&fyne.ShortcutCut{
Clipboard: w.Clipboard(),
}, w)
})
copyItem := fyne.NewMenuItem("Copy", func() {
shortcutFocused(&fyne.ShortcutCopy{
Clipboard: w.Clipboard(),
}, w)
})
pasteItem := fyne.NewMenuItem("Paste", func() {
shortcutFocused(&fyne.ShortcutPaste{
Clipboard: w.Clipboard(),
}, w)
})
findItem := fyne.NewMenuItem("Find", func() { fmt.Println("Menu Find") })
helpMenu := fyne.NewMenu("Help", fyne.NewMenuItem("Help", func() { fmt.Println("Help Menu") }))
mainMenu := fyne.NewMainMenu(
// a quit item will be appended to our first menu
fyne.NewMenu("File", newItem, fyne.NewMenuItemSeparator(), settingsItem),
fyne.NewMenu("Edit", cutItem, copyItem, pasteItem, fyne.NewMenuItemSeparator(), findItem),
helpMenu,
)
w.SetMainMenu(mainMenu)
w.SetMaster()
tabs := container.NewAppTabs(
container.NewTabItemWithIcon("Welcome", theme.HomeIcon(), welcomeScreen(a)),
container.NewTabItemWithIcon("Graphics", theme.DocumentCreateIcon(), screens.GraphicsScreen()),
container.NewTabItemWithIcon("Widgets", theme.CheckButtonCheckedIcon(), screens.WidgetScreen()),
container.NewTabItemWithIcon("Containers", theme.ViewRestoreIcon(), screens.ContainerScreen()),
container.NewTabItemWithIcon("Windows", theme.ViewFullScreenIcon(), screens.DialogScreen(w)))
if !fyne.CurrentDevice().IsMobile() {
tabs.Append(container.NewTabItemWithIcon("Advanced", theme.SettingsIcon(), screens.AdvancedScreen(w)))
}
tabs.SetTabLocation(container.TabLocationLeading)
tabs.SelectTabIndex(a.Preferences().Int(preferenceCurrentTab))
w.SetContent(tabs)
w.ShowAndRun()
a.Preferences().SetInt(preferenceCurrentTab, tabs.CurrentTabIndex())
}