1 files changed, 109 insertions(+), 0 deletions(-)

A textfeatures/main.go

@@ 0,0 1,109 @@
+// SPDX-License-Identifier: Unlicense OR MIT
+
+package main
+
+// A simple Gio program. See https://gioui.org for more information.
+
+import (
+	"log"
+	"math"
+	"os"
+	"strconv"
+
+	"gioui.org/app"
+	"gioui.org/io/system"
+	"gioui.org/layout"
+	"gioui.org/op"
+	"gioui.org/text"
+	"gioui.org/widget"
+	"gioui.org/widget/material"
+
+	colEmoji "eliasnaur.com/font/noto/emoji/color"
+	"gioui.org/font/gofont"
+	"gioui.org/font/opentype"
+)
+
+func main() {
+	go func() {
+		w := app.NewWindow()
+		if err := loop(w); err != nil {
+			log.Fatal(err)
+		}
+		os.Exit(0)
+	}()
+	app.Main()
+}
+
+func loop(w *app.Window) error {
+	// Load default font collection.
+	collection := gofont.Collection()
+	// Load a color emoji font.
+	face, err := opentype.Parse(colEmoji.TTF)
+	if err != nil {
+		panic(err)
+	}
+	th := material.NewTheme(append(collection, text.FontFace{
+		Font: text.Font{
+			Typeface: "Noto Color Emoji",
+		},
+		Face: face,
+	}))
+	var ops op.Ops
+	var sel widget.Selectable
+	message := "🥳🧁🍰🎁🎂🎈🎺🎉🎊\n📧〽️🧿🌶️🔋\n😂❤️😍🤣😊\n🥺🙏💕😭😘\n👍😅👏"
+	var customTruncator widget.Bool
+	var maxLines widget.Float
+	maxLines.Value = 1
+
+	const (
+		minLinesRange = 1
+		maxLinesRange = 5
+	)
+	for {
+		e := <-w.Events()
+		switch e := e.(type) {
+		case system.DestroyEvent:
+			return e.Err
+		case system.FrameEvent:
+			gtx := layout.NewContext(&ops, e)
+			inset := layout.UniformInset(5)
+			layout.Flex{Axis: layout.Vertical}.Layout(gtx,
+				layout.Rigid(func(gtx layout.Context) layout.Dimensions {
+					l := material.H4(th, message)
+					if customTruncator.Value {
+						l.Truncator = "cont..."
+					} else {
+						l.Truncator = ""
+					}
+					l.MaxLines = int(math.Round(float64(maxLines.Value)))
+					l.State = &sel
+					return inset.Layout(gtx, l.Layout)
+				}),
+				layout.Rigid(func(gtx layout.Context) layout.Dimensions {
+					return inset.Layout(gtx, func(gtx layout.Context) layout.Dimensions {
+						return layout.Flex{}.Layout(gtx,
+							layout.Rigid(material.Switch(th, &customTruncator, "Use Custom Truncator").Layout),
+							layout.Rigid(layout.Spacer{Width: 5}.Layout),
+							layout.Rigid(material.Body1(th, "Use Custom Truncator").Layout),
+						)
+					})
+				}),
+				layout.Rigid(func(gtx layout.Context) layout.Dimensions {
+					return inset.Layout(gtx, material.Body1(th, "Max Lines:").Layout)
+				}),
+				layout.Rigid(func(gtx layout.Context) layout.Dimensions {
+					return inset.Layout(gtx, func(gtx layout.Context) layout.Dimensions {
+						return layout.Flex{Alignment: layout.Middle}.Layout(gtx,
+							layout.Rigid(material.Body2(th, strconv.Itoa(minLinesRange)).Layout),
+							layout.Rigid(layout.Spacer{Width: 5}.Layout),
+							layout.Flexed(1, material.Slider(th, &maxLines, minLinesRange, maxLinesRange).Layout),
+							layout.Rigid(layout.Spacer{Width: 5}.Layout),
+							layout.Rigid(material.Body2(th, strconv.Itoa(maxLinesRange)).Layout),
+						)
+					})
+				}),
+			)
+			e.Frame(gtx.Ops)
+		}
+	}
+}