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// Copyright 2019-2022 Graham Clark. All rights reserved. Use of this source code is governed by the MIT license
// that can be found in the LICENSE file.
// A demonstration of gowid's menu, list and overlay widgets.
package main
import (
"fmt"
"github.com/gcla/gowid"
"github.com/gcla/gowid/examples"
"github.com/gcla/gowid/widgets/button"
"github.com/gcla/gowid/widgets/checkbox"
"github.com/gcla/gowid/widgets/columns"
"github.com/gcla/gowid/widgets/hpadding"
"github.com/gcla/gowid/widgets/list"
"github.com/gcla/gowid/widgets/menu"
"github.com/gcla/gowid/widgets/overlay"
"github.com/gcla/gowid/widgets/pile"
"github.com/gcla/gowid/widgets/styled"
"github.com/gcla/gowid/widgets/text"
"github.com/gcla/gowid/widgets/vpadding"
tcell "github.com/gdamore/tcell/v2"
log "github.com/sirupsen/logrus"
)
//======================================================================
var ov *overlay.Widget
var menu1 *menu.Widget
var menu2 *menu.Widget
var ovh, ovw int = 50, 50
//======================================================================
type handler struct{}
func (h handler) UnhandledInput(app gowid.IApp, ev interface{}) bool {
handled := false
if evk, ok := ev.(*tcell.EventKey); ok {
handled = true
if evk.Key() == tcell.KeyCtrlC || evk.Rune() == 'q' || evk.Rune() == 'Q' {
app.Quit()
} else if evk.Key() == tcell.KeyEsc {
if !menu1.IsOpen() {
app.Quit()
} else {
menu1.Close(app)
}
} else {
handled = false
}
}
return handled
}
//======================================================================
func main() {
f := examples.RedirectLogger("menu.log")
defer f.Close()
palette := gowid.Palette{
"red": gowid.MakePaletteEntry(gowid.ColorRed, gowid.ColorDarkBlue),
"green": gowid.MakePaletteEntry(gowid.ColorGreen, gowid.ColorDarkBlue),
"white": gowid.MakePaletteEntry(gowid.ColorWhite, gowid.ColorCyan),
}
fixed := gowid.RenderFixed{}
menu2Widgets := make([]gowid.IWidget, 0)
for i := 0; i < 10; i++ {
clickme := button.New(text.New(fmt.Sprintf("subwidget %d", i)))
clickmeStyled := styled.NewInvertedFocus(clickme, gowid.MakePaletteRef("green"))
clickme.OnClick(gowid.WidgetCallback{gowid.ClickCB{}, func(app gowid.IApp, target gowid.IWidget) {
log.Infof("SUBMENU button CLICKED")
}})
cols := columns.New([]gowid.IContainerWidget{
&gowid.ContainerWidget{IWidget: clickmeStyled, D: fixed},
})
menu2Widgets = append(menu2Widgets, cols)
}
walker2 := list.NewSimpleListWalker(menu2Widgets)
menuListBox2 := styled.New(list.New(walker2), gowid.MakePaletteRef("green"))
menu1Widgets := make([]gowid.IWidget, 0)
for i := 0; i < 40; i++ {
content := text.NewContent([]text.ContentSegment{
text.StringContent(fmt.Sprintf("widget %d", i)),
})
txt := styled.NewInvertedFocus(text.NewFromContent(content), gowid.MakePaletteRef("red"))
btn := button.NewBare(txt)
btnSite := menu.NewSite()
checkme := checkbox.New(false)
checkmeStyled := styled.NewInvertedFocus(checkme, gowid.MakePaletteRef("red"))
checkme.OnClick(gowid.WidgetCallback{gowid.ClickCB{}, func(app gowid.IApp, target gowid.IWidget) {
log.Infof("MENU checkbox CLICKED")
}})
btn.OnClick(gowid.WidgetCallback{gowid.ClickCB{}, func(app gowid.IApp, target gowid.IWidget) {
if menu2.IsOpen() {
menu2.Close(app)
} else {
menu2.Open(btnSite, app)
}
}})
cols := columns.New([]gowid.IContainerWidget{
&gowid.ContainerWidget{IWidget: checkmeStyled, D: fixed},
&gowid.ContainerWidget{IWidget: btn, D: fixed},
&gowid.ContainerWidget{IWidget: btnSite, D: fixed},
})
menu1Widgets = append(menu1Widgets, cols)
}
walker1 := list.NewSimpleListWalker(menu1Widgets)
menuListBox1 := styled.New(list.New(walker1), gowid.MakePaletteRef("red"))
menu1 = menu.New("main", menuListBox1, gowid.RenderWithUnits{U: 16})
menu2 = menu.New("main2", menuListBox2, gowid.RenderWithUnits{U: 16})
clickToOpenWidgets := make([]gowid.IContainerWidget, 0)
// Make the on screen buttons to click to open the menu
for i := 0; i < 20; i++ {
btn := button.New(text.New(fmt.Sprintf("clickety%d", i)))
btnStyled := styled.NewExt(btn, gowid.MakePaletteRef("red"), gowid.MakePaletteRef("white"))
btnSite := menu.NewSite(menu.SiteOptions{YOffset: 1})
btn.OnClick(gowid.WidgetCallback{gowid.ClickCB{}, func(app gowid.IApp, target gowid.IWidget) {
menu1.Open(btnSite, app)
}})
clickToOpenWidgets = append(clickToOpenWidgets, &gowid.ContainerWidget{IWidget: btnSite, D: fixed})
clickToOpenWidgets = append(clickToOpenWidgets, &gowid.ContainerWidget{IWidget: btnStyled, D: fixed})
}
clickToOpenCols := columns.New(clickToOpenWidgets)
check := checkbox.New(false)
view1 := pile.New([]gowid.IContainerWidget{
&gowid.ContainerWidget{IWidget: clickToOpenCols, D: fixed},
&gowid.ContainerWidget{IWidget: check, D: fixed},
})
view := vpadding.New(
hpadding.New(view1, gowid.HAlignLeft{}, fixed),
gowid.VAlignTop{Margin: 2},
gowid.RenderFlow{},
)
app, err := gowid.NewApp(gowid.AppArgs{
View: view,
Palette: &palette,
Log: log.StandardLogger(),
})
examples.ExitOnErr(err)
// Required for menus to appear overlaid on top of the main view.
app.RegisterMenu(menu1)
app.RegisterMenu(menu2)
app.MainLoop(handler{})
}
//======================================================================
// Local Variables:
// mode: Go
// fill-column: 110
// End:
|
