more settings dialog work

ui/dialogs/settingsdialog.go

@@ -2,6 +2,8 @@ package dialogs
 
 import (
 	"supersonic/backend"
+	"supersonic/ui/widgets"
+	"unicode"
 
 	"fyne.io/fyne/v2"
 	"fyne.io/fyne/v2/container"
@@ -30,10 +32,21 @@ func NewSettingsDialog(config *backend.Config) *SettingsDialog {
 
 	replayGainSelect := widget.NewSelect([]string{"None", "Album", "Track"}, nil)
 
+	percentEntry := widgets.NewTextRestrictedEntry(func(text string, r rune) bool {
+		return unicode.IsDigit(r) && len(text) < 2
+	})
+	percentEntry.SetMinCharWidth(2)
+
 	tabs := container.NewAppTabs(
 		container.NewTabItem("General", container.NewVBox(
 			widget.NewRichText(&widget.TextSegment{Text: "Scrobbling", Style: boldStyle}),
-			widget.NewCheckWithData("Send playback statistics to server", binding.BindBool(&config.Scrobbling.Enabled)))),
+			widget.NewCheckWithData("Send playback statistics to server", binding.BindBool(&config.Scrobbling.Enabled)),
+			container.NewHBox(
+				widget.NewLabel("Scrobble when"),
+				percentEntry,
+				widget.NewLabel("percent of track is played"),
+			),
+		)),
 		container.NewTabItem("Playback", container.NewVBox(
 			widget.NewRichText(&widget.TextSegment{Text: "ReplayGain", Style: boldStyle}),
 			container.New(layout.NewFormLayout(),
@@ -41,7 +54,8 @@ func NewSettingsDialog(config *backend.Config) *SettingsDialog {
 				widget.NewLabel("Prevent clipping"), widget.NewCheckWithData("", binding.BindBool(&config.ReplayGain.PreventClipping)),
 			),
 			widget.NewSeparator(),
-			widget.NewCheckWithData("Audio exclusive mode", binding.BindBool(&config.LocalPlayback.AudioExclusive)))),
+			widget.NewCheckWithData("Audio exclusive mode", binding.BindBool(&config.LocalPlayback.AudioExclusive)),
+		)),
 	)
 	s.content = container.NewVBox(tabs, widget.NewSeparator(),
 		container.NewHBox(layout.NewSpacer(), widget.NewButton("Close", func() {

ui/widgets/textrestrictedentry.go

@@ -0,0 +1,41 @@
+package widgets
+
+import (
+	"strings"
+
+	"fyne.io/fyne/v2"
+	"fyne.io/fyne/v2/theme"
+	"fyne.io/fyne/v2/widget"
+)
+
+type TextRestrictedEntry struct {
+	widget.Entry
+
+	charAllowed func(string, rune) bool
+
+	minWidth float32
+}
+
+func NewTextRestrictedEntry(charAllowed func(curText string, r rune) bool) *TextRestrictedEntry {
+	e := &TextRestrictedEntry{charAllowed: charAllowed}
+	e.ExtendBaseWidget(e)
+	return e
+}
+
+func (e *TextRestrictedEntry) TypedRune(r rune) {
+	if e.charAllowed == nil || e.charAllowed(e.Text, r) {
+		e.Entry.TypedRune(r)
+	}
+}
+
+func (e *TextRestrictedEntry) SetMinCharWidth(numChars int) {
+	e.minWidth = theme.Padding()*2 + fyne.MeasureText(strings.Repeat("W", numChars),
+		fyne.CurrentApp().Settings().Theme().Size(theme.SizeNameText), e.TextStyle).Width
+}
+
+func (e *TextRestrictedEntry) MinSize() fyne.Size {
+	if e.minWidth < 0.001 {
+		return e.Entry.MinSize()
+	}
+	return fyne.NewSize(e.minWidth, e.Entry.MinSize().Height)
+}