DEMO: add some interesting terminal window examples

Signed-off-by: Jeff Carr <jcarr@wit.com>

.gitignore

@@ -4,3 +4,8 @@ test3/test3
 test4/test4
 test5/test5
 example-systray/example-systray
+example-multiple-windows/example-multiple-windows
+example-splash/example-splash
+example-ssh/ssh-client
+example-ssh/ssh-ed25519
+example-ssh/with-passwd

example-gocui/active.go

@@ -0,0 +1,120 @@
+// Copyright 2014 The gocui Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+
+import (
+	"errors"
+	"fmt"
+	"log"
+
+	"github.com/awesome-gocui/gocui"
+)
+
+var (
+	viewArr = []string{"v1", "v2", "v3", "v4"}
+	active  = 0
+)
+
+func setCurrentViewOnTop(g *gocui.Gui, name string) (*gocui.View, error) {
+	if _, err := g.SetCurrentView(name); err != nil {
+		return nil, err
+	}
+	return g.SetViewOnTop(name)
+}
+
+func nextView(g *gocui.Gui, v *gocui.View) error {
+	nextIndex := (active + 1) % len(viewArr)
+	name := viewArr[nextIndex]
+
+	out, err := g.View("v2")
+	if err != nil {
+		return err
+	}
+	fmt.Fprintln(out, "Going from view "+v.Name()+" to "+name)
+
+	if _, err := setCurrentViewOnTop(g, name); err != nil {
+		return err
+	}
+
+	if nextIndex == 0 || nextIndex == 3 {
+		g.Cursor = true
+	} else {
+		g.Cursor = false
+	}
+
+	active = nextIndex
+	return nil
+}
+
+func layout(g *gocui.Gui) error {
+	maxX, maxY := g.Size()
+	if v, err := g.SetView("v1", 0, 0, maxX/2-1, maxY/2-1, 0); err != nil {
+		if !errors.Is(err, gocui.ErrUnknownView) {
+			return err
+		}
+		v.Title = "v1 (editable)"
+		v.Editable = true
+		v.Wrap = true
+
+		if _, err = setCurrentViewOnTop(g, "v1"); err != nil {
+			return err
+		}
+	}
+
+	if v, err := g.SetView("v2", maxX/2-1, 0, maxX-1, maxY/2-1, 0); err != nil {
+		if !errors.Is(err, gocui.ErrUnknownView) {
+			return err
+		}
+		v.Title = "v2"
+		v.Wrap = true
+		v.Autoscroll = true
+	}
+	if v, err := g.SetView("v3", 0, maxY/2-1, maxX/2-1, maxY-1, 0); err != nil {
+		if !errors.Is(err, gocui.ErrUnknownView) {
+			return err
+		}
+		v.Title = "v3"
+		v.Wrap = true
+		v.Autoscroll = true
+		fmt.Fprint(v, "Press TAB to change current view")
+	}
+	if v, err := g.SetView("v4", maxX/2, maxY/2, maxX-1, maxY-1, 0); err != nil {
+		if !errors.Is(err, gocui.ErrUnknownView) {
+			return err
+		}
+		v.Title = "v4 (editable)"
+		v.Editable = true
+	}
+	return nil
+}
+
+func quit(g *gocui.Gui, v *gocui.View) error {
+	return gocui.ErrQuit
+}
+
+func main() {
+	g, err := gocui.NewGui(gocui.OutputNormal, true)
+	if err != nil {
+		log.Panicln(err)
+	}
+	defer g.Close()
+
+	g.Highlight = true
+	g.Cursor = true
+	g.SelFgColor = gocui.ColorGreen
+
+	g.SetManagerFunc(layout)
+
+	if err := g.SetKeybinding("", gocui.KeyCtrlC, gocui.ModNone, quit); err != nil {
+		log.Panicln(err)
+	}
+	if err := g.SetKeybinding("", gocui.KeyTab, gocui.ModNone, nextView); err != nil {
+		log.Panicln(err)
+	}
+
+	if err := g.MainLoop(); err != nil && !errors.Is(err, gocui.ErrQuit) {
+		log.Panicln(err)
+	}
+}

example-gocui/colorstrue.go

@@ -0,0 +1,110 @@
+// Copyright 2014 The gocui Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+
+import (
+	"errors"
+	"fmt"
+	"log"
+	"os"
+
+	"github.com/awesome-gocui/gocui"
+	colorful "github.com/lucasb-eyer/go-colorful"
+)
+
+var dark = false
+
+func main() {
+	os.Setenv("COLORTERM", "truecolor")
+	g, err := gocui.NewGui(gocui.OutputTrue, true)
+
+	if err != nil {
+		log.Panicln(err)
+	}
+	defer g.Close()
+
+	g.SetManagerFunc(layout)
+
+	if err := g.SetKeybinding("", gocui.KeyCtrlC, gocui.ModNone, quit); err != nil {
+		log.Panicln(err)
+	}
+
+	if err := g.SetKeybinding("", gocui.KeyCtrlR, gocui.ModNone, func(g *gocui.Gui, v *gocui.View) error {
+		if dark {
+			dark = false
+		} else {
+			dark = true
+		}
+		displayHsv(v)
+
+		return nil
+	}); err != nil {
+		log.Panicln(err)
+	}
+
+	if err := g.MainLoop(); err != nil && !errors.Is(err, gocui.ErrQuit) {
+		log.Panicln(err)
+	}
+}
+
+func layout(g *gocui.Gui) error {
+	maxX, maxY := g.Size()
+	rows := 33
+	cols := 182
+	if maxY < rows {
+		rows = maxY
+	}
+	if maxX < cols {
+		cols = maxX
+	}
+
+	if v, err := g.SetView("colors", 0, 0, cols-1, rows-1, 0); err != nil {
+		if !errors.Is(err, gocui.ErrUnknownView) {
+			return err
+		}
+
+		v.FrameColor = gocui.GetColor("#FFAA55")
+		displayHsv(v)
+
+		if _, err := g.SetCurrentView("colors"); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func displayHsv(v *gocui.View) {
+	v.Clear()
+	str := ""
+	// HSV color space (lines are value or saturation)
+	for i := 50; i > 0; i -= 2 {
+		// Hue
+		for j := 0; j < 360; j += 2 {
+			ir, ig, ib := hsv(j, i-1)
+			ir2, ig2, ib2 := hsv(j, i)
+			str += fmt.Sprintf("\x1b[48;2;%d;%d;%dm\x1b[38;2;%d;%d;%dm▀\x1b[0m", ir, ig, ib, ir2, ig2, ib2)
+		}
+		str += "\n"
+		fmt.Fprint(v, str)
+		str = ""
+	}
+
+	fmt.Fprintln(v, "\n\x1b[38;5;245mCtrl + R - Switch light/dark mode")
+	fmt.Fprintln(v, "\nCtrl + C - Exit\n")
+	fmt.Fprint(v, "Example should enable true color, but if it doesn't work run this command: \x1b[0mexport COLORTERM=truecolor")
+}
+
+func hsv(hue, sv int) (uint32, uint32, uint32) {
+	if !dark {
+		ir, ig, ib, _ := colorful.Hsv(float64(hue), float64(sv)/50, float64(1)).RGBA()
+		return ir >> 8, ig >> 8, ib >> 8
+	}
+	ir, ig, ib, _ := colorful.Hsv(float64(hue), float64(1), float64(sv)/50).RGBA()
+	return ir >> 8, ig >> 8, ib >> 8
+}
+
+func quit(g *gocui.Gui, v *gocui.View) error {
+	return gocui.ErrQuit
+}

example-gocui/dynamic.go

@@ -0,0 +1,192 @@
+// Copyright 2014 The gocui Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+
+import (
+	"errors"
+	"fmt"
+	"log"
+	"strings"
+
+	"github.com/awesome-gocui/gocui"
+)
+
+const delta = 1
+
+var (
+	views   = []string{}
+	curView = -1
+	idxView = 0
+)
+
+func main() {
+	g, err := gocui.NewGui(gocui.OutputNormal, true)
+	if err != nil {
+		log.Panicln(err)
+	}
+	defer g.Close()
+
+	g.Highlight = true
+	g.SelFgColor = gocui.ColorRed
+	g.SelFrameColor = gocui.ColorRed
+
+	g.SetManagerFunc(layout)
+
+	if err := initKeybindings(g); err != nil {
+		log.Panicln(err)
+	}
+	if err := newView(g); err != nil {
+		log.Panicln(err)
+	}
+
+	if err := g.MainLoop(); err != nil && !errors.Is(err, gocui.ErrQuit) {
+		log.Panicln(err)
+	}
+}
+
+func layout(g *gocui.Gui) error {
+	maxX, _ := g.Size()
+	v, err := g.SetView("help", maxX-25, 0, maxX-1, 9, 0)
+	if err != nil {
+		if !errors.Is(err, gocui.ErrUnknownView) {
+			return err
+		}
+		fmt.Fprintln(v, "KEYBINDINGS")
+		fmt.Fprintln(v, "Space: New View")
+		fmt.Fprintln(v, "Tab: Next View")
+		fmt.Fprintln(v, "← ↑ → ↓: Move View")
+		fmt.Fprintln(v, "Backspace: Delete View")
+		fmt.Fprintln(v, "t: Set view on top")
+		fmt.Fprintln(v, "b: Set view on bottom")
+		fmt.Fprintln(v, "^C: Exit")
+	}
+	return nil
+}
+
+func initKeybindings(g *gocui.Gui) error {
+	if err := g.SetKeybinding("", gocui.KeyCtrlC, gocui.ModNone,
+		func(g *gocui.Gui, v *gocui.View) error {
+			return gocui.ErrQuit
+		}); err != nil {
+		return err
+	}
+	if err := g.SetKeybinding("", gocui.KeySpace, gocui.ModNone,
+		func(g *gocui.Gui, v *gocui.View) error {
+			return newView(g)
+		}); err != nil {
+		return err
+	}
+	if err := g.SetKeybinding("", gocui.KeyBackspace2, gocui.ModNone,
+		func(g *gocui.Gui, v *gocui.View) error {
+			return delView(g)
+		}); err != nil {
+		return err
+	}
+	if err := g.SetKeybinding("", gocui.KeyTab, gocui.ModNone,
+		func(g *gocui.Gui, v *gocui.View) error {
+			return nextView(g, true)
+		}); err != nil {
+		return err
+	}
+	if err := g.SetKeybinding("", gocui.KeyArrowLeft, gocui.ModNone,
+		func(g *gocui.Gui, v *gocui.View) error {
+			return moveView(g, v, -delta, 0)
+		}); err != nil {
+		return err
+	}
+	if err := g.SetKeybinding("", gocui.KeyArrowRight, gocui.ModNone,
+		func(g *gocui.Gui, v *gocui.View) error {
+			return moveView(g, v, delta, 0)
+		}); err != nil {
+		return err
+	}
+	if err := g.SetKeybinding("", gocui.KeyArrowDown, gocui.ModNone,
+		func(g *gocui.Gui, v *gocui.View) error {
+			return moveView(g, v, 0, delta)
+		}); err != nil {
+		return err
+	}
+	if err := g.SetKeybinding("", gocui.KeyArrowUp, gocui.ModNone,
+		func(g *gocui.Gui, v *gocui.View) error {
+			return moveView(g, v, 0, -delta)
+		}); err != nil {
+		return err
+	}
+	if err := g.SetKeybinding("", 't', gocui.ModNone,
+		func(g *gocui.Gui, v *gocui.View) error {
+			_, err := g.SetViewOnTop(views[curView])
+			return err
+		}); err != nil {
+		return err
+	}
+	if err := g.SetKeybinding("", 'b', gocui.ModNone,
+		func(g *gocui.Gui, v *gocui.View) error {
+			_, err := g.SetViewOnBottom(views[curView])
+			return err
+		}); err != nil {
+		return err
+	}
+	return nil
+}
+
+func newView(g *gocui.Gui) error {
+	maxX, maxY := g.Size()
+	name := fmt.Sprintf("v%v", idxView)
+	v, err := g.SetView(name, maxX/2-5, maxY/2-5, maxX/2+5, maxY/2+5, 0)
+	if err != nil {
+		if !errors.Is(err, gocui.ErrUnknownView) {
+			return err
+		}
+		v.Wrap = true
+		fmt.Fprintln(v, strings.Repeat(name+" ", 30))
+	}
+	if _, err := g.SetCurrentView(name); err != nil {
+		return err
+	}
+
+	views = append(views, name)
+	curView = len(views) - 1
+	idxView += 1
+	return nil
+}
+
+func delView(g *gocui.Gui) error {
+	if len(views) <= 1 {
+		return nil
+	}
+
+	if err := g.DeleteView(views[curView]); err != nil {
+		return err
+	}
+	views = append(views[:curView], views[curView+1:]...)
+
+	return nextView(g, false)
+}
+
+func nextView(g *gocui.Gui, disableCurrent bool) error {
+	next := curView + 1
+	if next > len(views)-1 {
+		next = 0
+	}
+
+	if _, err := g.SetCurrentView(views[next]); err != nil {
+		return err
+	}
+
+	curView = next
+	return nil
+}
+
+func moveView(g *gocui.Gui, v *gocui.View, dx, dy int) error {
+	name := v.Name()
+	x0, y0, x1, y1, err := g.ViewPosition(name)
+	if err != nil {
+		return err
+	}
+	if _, err := g.SetView(name, x0+dx, y0+dy, x1+dx, y1+dy, 0); err != nil {
+		return err
+	}
+	return nil
+}

example-gocui/mouse.go

@@ -0,0 +1,116 @@
+// Copyright 2014 The gocui Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+
+import (
+	"errors"
+	"fmt"
+	"log"
+
+	"github.com/awesome-gocui/gocui"
+)
+
+func main() {
+	g, err := gocui.NewGui(gocui.OutputNormal, true)
+	if err != nil {
+		log.Panicln(err)
+	}
+	defer g.Close()
+
+	g.Cursor = true
+	g.Mouse = true
+
+	g.SetManagerFunc(layout)
+
+	if err := keybindings(g); err != nil {
+		log.Panicln(err)
+	}
+
+	if err := g.MainLoop(); err != nil && !errors.Is(err, gocui.ErrQuit) {
+		log.Panicln(err)
+	}
+}
+
+func layout(g *gocui.Gui) error {
+	if v, err := g.SetView("but1", 2, 2, 22, 7, 0); err != nil {
+		if !errors.Is(err, gocui.ErrUnknownView) {
+			return err
+		}
+		v.Highlight = true
+		v.SelBgColor = gocui.ColorGreen
+		v.SelFgColor = gocui.ColorBlack
+		fmt.Fprintln(v, "Button 1 - line 1")
+		fmt.Fprintln(v, "Button 1 - line 2")
+		fmt.Fprintln(v, "Button 1 - line 3")
+		fmt.Fprintln(v, "Button 1 - line 4")
+		if _, err := g.SetCurrentView("but1"); err != nil {
+			return err
+		}
+	}
+	if v, err := g.SetView("but2", 24, 2, 44, 4, 0); err != nil {
+		if !errors.Is(err, gocui.ErrUnknownView) {
+			return err
+		}
+		v.Highlight = true
+		v.SelBgColor = gocui.ColorGreen
+		v.SelFgColor = gocui.ColorBlack
+		fmt.Fprintln(v, "Button 2 - line 1")
+	}
+	return nil
+}
+
+func keybindings(g *gocui.Gui) error {
+	if err := g.SetKeybinding("", gocui.KeyCtrlC, gocui.ModNone, quit); err != nil {
+		return err
+	}
+	for _, n := range []string{"but1", "but2"} {
+		if err := g.SetKeybinding(n, gocui.MouseLeft, gocui.ModNone, showMsg); err != nil {
+			return err
+		}
+	}
+	if err := g.SetKeybinding("msg", gocui.MouseLeft, gocui.ModNone, delMsg); err != nil {
+		return err
+	}
+	if err := g.SetKeybinding("", gocui.MouseRight, gocui.ModNone, delMsg); err != nil {
+		return err
+	}
+	if err := g.SetKeybinding("", gocui.MouseMiddle, gocui.ModNone, delMsg); err != nil {
+		return err
+	}
+	return nil
+}
+
+func quit(g *gocui.Gui, v *gocui.View) error {
+	return gocui.ErrQuit
+}
+
+func showMsg(g *gocui.Gui, v *gocui.View) error {
+	var l string
+	var err error
+
+	if _, err := g.SetCurrentView(v.Name()); err != nil {
+		return err
+	}
+
+	_, cy := v.Cursor()
+	if l, err = v.Line(cy); err != nil {
+		l = ""
+	}
+
+	maxX, maxY := g.Size()
+	if v, err := g.SetView("msg", maxX/2-10, maxY/2, maxX/2+10, maxY/2+2, 0); err != nil {
+		if !errors.Is(err, gocui.ErrUnknownView) {
+			return err
+		}
+		fmt.Fprintln(v, l)
+	}
+	return nil
+}
+
+func delMsg(g *gocui.Gui, v *gocui.View) error {
+	// Error check removed, because delete could be called multiple times with the above keybindings
+	g.DeleteView("msg")
+	return nil
+}

example-multiple-windows/main.go

@@ -7,8 +7,8 @@ import "time"
 
 import "github.com/davecgh/go-spew/spew"
 
-import "git.wit.com/wit/gui"
-import pb "git.wit.com/wit/witProtobuf"
+import "git.wit.org/wit/gui"
+import pb "git.wit.org/jcarr/witProtobuf"
 
 import "github.com/andlabs/ui"
 import _ "github.com/andlabs/ui/winmanifest"