Add zooming with +/- keys

cmd/fyneterm/main.go

@@ -23,7 +23,10 @@ import (
 
 const termOverlay = fyne.ThemeColorName("termOver")
 
-var localizer *i18n.Localizer
+var (
+	localizer *i18n.Localizer
+	sizer     *termTheme
+)
 
 func setupListener(t *terminal.Terminal, w fyne.Window) {
 	listen := make(chan terminal.Config)
@@ -70,9 +73,9 @@ func main() {
 
 	a := app.New()
 	a.SetIcon(data.Icon)
-	th := newTermTheme()
-	a.Settings().SetTheme(th)
-	w := newTerminalWindow(a, th, debug)
+	sizer = newTermTheme()
+	a.Settings().SetTheme(sizer)
+	w := newTerminalWindow(a, sizer, debug)
 	w.ShowAndRun()
 }
 
@@ -112,6 +115,20 @@ func newTerminalWindow(a fyne.App, th fyne.Theme, debug bool) fyne.Window {
 			w := newTerminalWindow(a, th, debug)
 			w.Show()
 		})
+	t.AddShortcut(&desktop.CustomShortcut{KeyName: fyne.KeyEqual, Modifier: fyne.KeyModifierControl | fyne.KeyModifierShift},
+		func(_ fyne.Shortcut) {
+			sizer.fontSize++
+			a.Settings().SetTheme(sizer)
+			t.Refresh()
+			t.Resize(t.Size())
+		})
+	t.AddShortcut(&desktop.CustomShortcut{KeyName: fyne.KeyMinus, Modifier: fyne.KeyModifierControl},
+		func(_ fyne.Shortcut) {
+			sizer.fontSize--
+			a.Settings().SetTheme(sizer)
+			t.Refresh()
+			t.Resize(t.Size())
+		})
 	go func() {
 		err := t.RunLocalShell()
 		if err != nil {

cmd/fyneterm/theme.go

@@ -9,10 +9,12 @@ import (
 
 type termTheme struct {
 	fyne.Theme
+
+	fontSize float32
 }
 
-func newTermTheme() fyne.Theme {
-	return &termTheme{fyne.CurrentApp().Settings().Theme()}
+func newTermTheme() *termTheme {
+	return &termTheme{Theme: fyne.CurrentApp().Settings().Theme(), fontSize: 12}
 }
 
 // Color fixes a bug < 2.1 where theme.DarkTheme() would not override user preference.
@@ -32,7 +34,7 @@ func (t *termTheme) Color(n fyne.ThemeColorName, v fyne.ThemeVariant) color.Colo
 
 func (t *termTheme) Size(n fyne.ThemeSizeName) float32 {
 	if n == theme.SizeNameText {
-		return 12
+		return t.fontSize
 	}
 
 	return t.Theme.Size(n)

go.mod

@@ -3,19 +3,19 @@ module github.com/fyne-io/terminal
 go 1.17
 
 require (
-	fyne.io/fyne/v2 v2.3.6-0.20230704203313-e050d7994adc
+	fyne.io/fyne/v2 v2.4.0-rc1
 	github.com/ActiveState/termtest/conpty v0.5.0
 	github.com/creack/pty v1.1.11
 	github.com/nicksnyder/go-i18n/v2 v2.1.2
-	github.com/stretchr/testify v1.8.0
-	golang.org/x/text v0.9.0
+	github.com/stretchr/testify v1.8.4
+	golang.org/x/text v0.12.0
 )
 
 require (
-	fyne.io/systray v1.10.1-0.20230602210930-b6a2d6ca2a7b // indirect
+	fyne.io/systray v1.10.1-0.20230722100817-88df1e0ffa9a // indirect
 	github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/fredbi/uri v0.1.0 // indirect
+	github.com/fredbi/uri v1.0.0 // indirect
 	github.com/fsnotify/fsnotify v1.6.0 // indirect
 	github.com/fyne-io/gl-js v0.0.0-20220119005834-d2da28d9ccfe // indirect
 	github.com/fyne-io/glfw-js v0.0.0-20220120001248-ee7290d23504 // indirect
@@ -32,11 +32,11 @@ require (
 	github.com/srwiley/oksvg v0.0.0-20221011165216-be6e8873101c // indirect
 	github.com/srwiley/rasterx v0.0.0-20220730225603-2ab79fcdd4ef // indirect
 	github.com/tevino/abool v1.2.0 // indirect
-	github.com/yuin/goldmark v1.4.13 // indirect
-	golang.org/x/image v0.7.0 // indirect
-	golang.org/x/mobile v0.0.0-20230427221453-e8d11dd0ba41 // indirect
-	golang.org/x/net v0.9.0 // indirect
-	golang.org/x/sys v0.8.0 // indirect
+	github.com/yuin/goldmark v1.5.5 // indirect
+	golang.org/x/image v0.11.0 // indirect
+	golang.org/x/mobile v0.0.0-20230531173138-3c911d8e3eda // indirect
+	golang.org/x/net v0.14.0 // indirect
+	golang.org/x/sys v0.11.0 // indirect
 	gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 	honnef.co/go/js/dom v0.0.0-20210725211120-f030747120f2 // indirect