Allow forwarding resize events fyne-io#103

term.go

@@ -1,6 +1,7 @@
 package terminal
 
 import (
+	"github.com/creack/pty"
 	"image/color"
 	"io"
 	"math"
@@ -86,8 +87,11 @@ type Terminal struct {
 	printer                Printer
 	cmd                    *exec.Cmd
 	readWriterConfigurator ReadWriterConfigurator
+	onResize               ResizeHandler
 }
 
+type ResizeHandler = func(size *pty.Winsize)
+
 // Printer is used for spooling print data when its received.
 type Printer interface {
 	Print([]byte)
@@ -549,3 +553,7 @@ type ReadWriterConfiguratorFunc func(r io.Reader, w io.WriteCloser) (io.Reader,
 func (m ReadWriterConfiguratorFunc) SetupReadWriter(r io.Reader, w io.WriteCloser) (io.Reader, io.WriteCloser) {
 	return m(r, w)
 }
+
+func (t *Terminal) SetResizeHandler(h ResizeHandler) {
+	t.onResize = h
+}

term_unix.go

@@ -13,17 +13,23 @@ import (
 )
 
 func (t *Terminal) updatePTYSize() {
-	if t.pty == nil { // SSH or other direct connection?
+	if t.pty == nil && t.onResize == nil { // SSH or other direct connection?
 		return
 	}
 	scale := float32(1.0)
 	c := fyne.CurrentApp().Driver().CanvasForObject(t)
 	if c != nil {
 		scale = c.Scale()
 	}
-	_ = pty.Setsize(t.pty.(*os.File), &pty.Winsize{
+	ws := &pty.Winsize{
 		Rows: uint16(t.config.Rows), Cols: uint16(t.config.Columns),
-		X: uint16(t.Size().Width * scale), Y: uint16(t.Size().Height * scale)})
+		X: uint16(t.Size().Width * scale), Y: uint16(t.Size().Height * scale)}
+	if t.onResize != nil {
+		t.onResize(ws)
+	}
+	if t.pty != nil {
+		_ = pty.Setsize(t.pty.(*os.File), ws)
+	}
 }
 
 func (t *Terminal) startPTY() (io.WriteCloser, io.Reader, io.Closer, error) {