From fb0fa4af92d11ce66ddaba27b8ab0544e1c1f775 Mon Sep 17 00:00:00 2001
From: "5684185+vsariola@users.noreply.github.com"
 <5684185+vsariola@users.noreply.github.com>
Date: Mon, 23 Jun 2025 18:45:13 +0300
Subject: [PATCH] feat: embed license in executable and add menu item to show
 it

---
 CHANGELOG.md                 |  2 ++
 LICENSE                      |  3 ++-
 song.go                      |  4 ++++
 tracker/action.go            |  7 +++++++
 tracker/gioui/dialog.go      | 27 ++++++++++++++-------------
 tracker/gioui/keybindings.go |  2 ++
 tracker/gioui/label.go       |  1 -
 tracker/gioui/songpanel.go   | 13 +++++++++----
 tracker/gioui/tracker.go     |  7 +++++++
 tracker/model.go             |  1 +
 10 files changed, 48 insertions(+), 19 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 34cdfbf..66b8ac1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## [Unreleased]
 ### Added
+- Help menu, with a menu item to show the license ([#196][i196])
 - Show CPU load percentage in the song panel ([#192][i192])
 - Theme can be user configured, in theme.yml. This theme.yml should be placed in
   the usual sointu config directory (i.e.
@@ -337,3 +338,4 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 [i176]: https://github.com/vsariola/sointu/issues/176
 [i186]: https://github.com/vsariola/sointu/issues/186
 [i192]: https://github.com/vsariola/sointu/issues/192
+[i196]: https://github.com/vsariola/sointu/issues/196
diff --git a/LICENSE b/LICENSE
index 0be3a8b..a504e5c 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,7 +1,8 @@
 MIT License
 
 Copyright (c) 2018 Dominik Ries
-          (c) 2020 Veikko Sariola
+          (c) 2020-2025 Veikko Sariola, moitias, qm210, LeStahl,
+              petersalomonsen, anticore
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/song.go b/song.go
index 11b3cdd..2bf81da 100644
--- a/song.go
+++ b/song.go
@@ -1,6 +1,7 @@
 package sointu
 
 import (
+	_ "embed"
 	"errors"
 )
 
@@ -92,6 +93,9 @@ type (
 	}
 )
 
+//go:embed LICENSE
+var License string
+
 func (s *Score) SongPos(songRow int) SongPos {
 	if s.RowsPerPattern == 0 {
 		return SongPos{OrderRow: 0, PatternRow: 0}
diff --git a/tracker/action.go b/tracker/action.go
index 4a55e6e..6faf6a7 100644
--- a/tracker/action.go
+++ b/tracker/action.go
@@ -92,6 +92,7 @@ type (
 		Item MIDIDevice
 		*Model
 	}
+	ShowLicense Model
 )
 
 // Action methods
@@ -123,6 +124,9 @@ func (a Action) Do() {
 }
 
 func (a Action) Enabled() bool {
+	if a.doer == nil {
+		return false // no doer, not allowed
+	}
 	if a.enabler == nil {
 		return true // no enabler, always allowed
 	}
@@ -588,6 +592,9 @@ func (m *ExportFloat) Do()           { m.dialog = ExportFloatExplorer }
 func (m *Model) ExportInt16() Action { return MakeEnabledAction((*ExportInt16)(m)) }
 func (m *ExportInt16) Do()           { m.dialog = ExportInt16Explorer }
 
+func (m *Model) ShowLicense() Action { return MakeEnabledAction((*ShowLicense)(m)) }
+func (m *ShowLicense) Do()           { m.dialog = License }
+
 func (m *Model) SelectMidiInput(item MIDIDevice) Action {
 	return MakeEnabledAction(SelectMidiInput{Item: item, Model: m})
 }
diff --git a/tracker/gioui/dialog.go b/tracker/gioui/dialog.go
index d012fca..70ed777 100644
--- a/tracker/gioui/dialog.go
+++ b/tracker/gioui/dialog.go
@@ -92,13 +92,15 @@ func (d *Dialog) handleKeys(gtx C) {
 	for d.BtnCancel.Clicked(gtx) {
 		d.cancel.Do()
 	}
-	if d.alt.Enabled() {
+	if d.alt.Enabled() && d.cancel.Enabled() {
 		d.handleKeysForButton(gtx, &d.BtnAlt, &d.BtnCancel, &d.BtnOk)
 		d.handleKeysForButton(gtx, &d.BtnCancel, &d.BtnOk, &d.BtnAlt)
 		d.handleKeysForButton(gtx, &d.BtnOk, &d.BtnAlt, &d.BtnCancel)
-	} else {
+	} else if d.ok.Enabled() {
 		d.handleKeysForButton(gtx, &d.BtnOk, &d.BtnCancel, &d.BtnCancel)
 		d.handleKeysForButton(gtx, &d.BtnCancel, &d.BtnOk, &d.BtnOk)
+	} else {
+		d.handleKeysForButton(gtx, &d.BtnCancel, &d.BtnCancel, &d.BtnCancel)
 	}
 }
 
@@ -117,18 +119,17 @@ func (d *DialogStyle) Layout(gtx C) D {
 					layout.Rigid(Label(d.Theme, &d.Theme.Dialog.Text, d.Text).Layout),
 					layout.Rigid(func(gtx C) D {
 						return layout.E.Layout(gtx, func(gtx C) D {
-							gtx.Constraints.Min.X = gtx.Dp(unit.Dp(120))
-							if d.dialog.alt.Enabled() {
-								return layout.Flex{Axis: layout.Horizontal, Spacing: layout.SpaceBetween}.Layout(gtx,
-									layout.Rigid(d.OkStyle.Layout),
-									layout.Rigid(d.AltStyle.Layout),
-									layout.Rigid(d.CancelStyle.Layout),
-								)
+							fl := layout.Flex{Axis: layout.Horizontal, Spacing: layout.SpaceBetween}
+							ok := layout.Rigid(d.OkStyle.Layout)
+							alt := layout.Rigid(d.AltStyle.Layout)
+							cancel := layout.Rigid(d.CancelStyle.Layout)
+							if d.dialog.alt.Enabled() && d.dialog.cancel.Enabled() {
+								return fl.Layout(gtx, ok, alt, cancel)
 							}
-							return layout.Flex{Axis: layout.Horizontal, Spacing: layout.SpaceBetween}.Layout(gtx,
-								layout.Rigid(d.OkStyle.Layout),
-								layout.Rigid(d.CancelStyle.Layout),
-							)
+							if d.dialog.ok.Enabled() {
+								return fl.Layout(gtx, ok, cancel)
+							}
+							return fl.Layout(gtx, cancel)
 						})
 					}),
 				)
diff --git a/tracker/gioui/keybindings.go b/tracker/gioui/keybindings.go
index 5e6e93a..da32728 100644
--- a/tracker/gioui/keybindings.go
+++ b/tracker/gioui/keybindings.go
@@ -185,6 +185,8 @@ func (t *Tracker) KeyEvent(e key.Event, gtx C) {
 		t.SplitTrack().Do()
 	case "SplitInstrument":
 		t.SplitInstrument().Do()
+	case "ShowLicense":
+		t.ShowLicense().Do()
 	// Booleans
 	case "PanicToggle":
 		t.Panic().Toggle()
diff --git a/tracker/gioui/label.go b/tracker/gioui/label.go
index fa97e22..73cd332 100644
--- a/tracker/gioui/label.go
+++ b/tracker/gioui/label.go
@@ -32,7 +32,6 @@ func (l LabelWidget) Layout(gtx C) D {
 	textColor := textColorMacro.Stop()
 	t := widget.Label{
 		Alignment: l.Alignment,
-		MaxLines:  1,
 	}
 	if l.ShadowColor.A > 0 {
 		shadowColorMacro := op.Record(gtx.Ops)
diff --git a/tracker/gioui/songpanel.go b/tracker/gioui/songpanel.go
index 9f79b9b..9de5b45 100644
--- a/tracker/gioui/songpanel.go
+++ b/tracker/gioui/songpanel.go
@@ -307,6 +307,7 @@ type MenuBar struct {
 	fileMenuItems []MenuItem
 	editMenuItems []MenuItem
 	midiMenuItems []MenuItem
+	helpMenuItems []MenuItem
 
 	panicHint string
 	PanicBtn  *Clickable
@@ -314,8 +315,8 @@ type MenuBar struct {
 
 func NewMenuBar(model *tracker.Model) *MenuBar {
 	ret := &MenuBar{
-		Clickables: make([]Clickable, 3),
-		Menus:      make([]Menu, 3),
+		Clickables: make([]Clickable, 4),
+		Menus:      make([]Menu, 4),
 		PanicBtn:   new(Clickable),
 		panicHint:  makeHint("Panic", " (%s)", "PanicToggle"),
 	}
@@ -341,6 +342,9 @@ func NewMenuBar(model *tracker.Model) *MenuBar {
 			Doer:      model.SelectMidiInput(input),
 		})
 	}
+	ret.helpMenuItems = []MenuItem{
+		{IconBytes: icons.ActionCopyright, Text: "License", ShortcutText: keyActionMap["ShowLicense"], Doer: model.ShowLicense()},
+	}
 	return ret
 }
 
@@ -356,11 +360,12 @@ func (t *MenuBar) Layout(gtx C, tr *Tracker) D {
 	fileFC := layout.Rigid(tr.layoutMenu(gtx, "File", &t.Clickables[0], &t.Menus[0], unit.Dp(200), t.fileMenuItems...))
 	editFC := layout.Rigid(tr.layoutMenu(gtx, "Edit", &t.Clickables[1], &t.Menus[1], unit.Dp(200), t.editMenuItems...))
 	midiFC := layout.Rigid(tr.layoutMenu(gtx, "MIDI", &t.Clickables[2], &t.Menus[2], unit.Dp(200), t.midiMenuItems...))
+	helpFC := layout.Rigid(tr.layoutMenu(gtx, "?", &t.Clickables[3], &t.Menus[3], unit.Dp(200), t.helpMenuItems...))
 	panicFC := layout.Flexed(1, func(gtx C) D { return layout.E.Layout(gtx, panicBtn.Layout) })
 	if len(t.midiMenuItems) > 0 {
-		return flex.Layout(gtx, fileFC, editFC, midiFC, panicFC)
+		return flex.Layout(gtx, fileFC, editFC, midiFC, helpFC, panicFC)
 	}
-	return flex.Layout(gtx, fileFC, editFC, panicFC)
+	return flex.Layout(gtx, fileFC, editFC, helpFC, panicFC)
 }
 
 type PlayBar struct {
diff --git a/tracker/gioui/tracker.go b/tracker/gioui/tracker.go
index 28065ee..da1bc12 100644
--- a/tracker/gioui/tracker.go
+++ b/tracker/gioui/tracker.go
@@ -20,6 +20,7 @@ import (
 	"gioui.org/op/paint"
 	"gioui.org/text"
 	"gioui.org/x/explorer"
+	"github.com/vsariola/sointu"
 	"github.com/vsariola/sointu/tracker"
 )
 
@@ -39,6 +40,7 @@ type (
 
 		SaveChangesDialog *Dialog
 		WaveTypeDialog    *Dialog
+		LicenseDialog     *Dialog
 
 		ModalDialog      layout.Widget
 		InstrumentEditor *InstrumentEditor
@@ -79,6 +81,7 @@ func NewTracker(model *tracker.Model) *Tracker {
 
 		SaveChangesDialog: NewDialog(model.SaveSong(), model.DiscardSong(), model.Cancel()),
 		WaveTypeDialog:    NewDialog(model.ExportInt16(), model.ExportFloat(), model.Cancel()),
+		LicenseDialog:     NewDialog(tracker.MakeAction(nil), tracker.MakeAction(nil), model.Cancel()),
 		InstrumentEditor:  NewInstrumentEditor(model),
 		OrderEditor:       NewOrderEditor(model),
 		TrackEditor:       NewNoteEditor(model),
@@ -291,6 +294,10 @@ func (t *Tracker) showDialog(gtx C) {
 		t.explorerCreateFile(func(wc io.WriteCloser) {
 			t.WriteWav(wc, t.Dialog() == tracker.ExportInt16Explorer)
 		}, filename)
+	case tracker.License:
+		dstyle := ConfirmDialog(gtx, t.Theme, t.LicenseDialog, "License", sointu.License)
+		dstyle.CancelStyle.Text = "Close"
+		dstyle.Layout(gtx)
 	}
 }
 
diff --git a/tracker/model.go b/tracker/model.go
index 9e34336..0f8d493 100644
--- a/tracker/model.go
+++ b/tracker/model.go
@@ -155,6 +155,7 @@ const (
 	ExportInt16Explorer
 	QuitChanges
 	QuitSaveExplorer
+	License
 )
 
 const maxUndo = 64