1 files changed, 191 insertions, 0 deletions
diff --git a/toolkit/democui/, b/toolkit/democui/,
new file mode 100644
index 0000000..762f8eb
--- /dev/null
+++ b/toolkit/democui/,
@@ -0,0 +1,191 @@
+// 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 = false
+	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)
+	}
+}
+
+var initialMouseX, initialMouseY, xOffset, yOffset int
+var globalMouseDown, msgMouseDown, movingMsg bool
+
+func layout(g *gocui.Gui) error {
+	maxX, maxY := g.Size()
+	if _, err := g.View("msg"); msgMouseDown && err == nil {
+		moveMsg(g)
+	}
+	if v, err := g.SetView("global", -1, -1, maxX, maxY, 0); err != nil {
+		if !errors.Is(err, gocui.ErrUnknownView) {
+			return err
+		}
+		v.Frame = false
+	}
+	if v, err := g.SetView("but1", 2, 2, 22, 7, 0); err != nil {
+		if !errors.Is(err, gocui.ErrUnknownView) {
+			return err
+		}
+		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.SelBgColor = gocui.ColorGreen
+		v.SelFgColor = gocui.ColorBlack
+		fmt.Fprintln(v, "Button 2 - line 1")
+	}
+	updateHighlightedView(g)
+	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("", gocui.MouseRelease, gocui.ModNone, mouseUp); err != nil {
+		return err
+	}
+	if err := g.SetKeybinding("", gocui.MouseLeft, gocui.ModNone, globalDown); err != nil {
+		return err
+	}
+	if err := g.SetKeybinding("msg", gocui.MouseLeft, gocui.ModNone, msgDown); 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 || errors.Is(err, gocui.ErrUnknownView) {
+		v.Clear()
+		v.SelBgColor = gocui.ColorCyan
+		v.SelFgColor = gocui.ColorBlack
+		fmt.Fprintln(v, l)
+	}
+	return nil
+}
+
+func updateHighlightedView(g *gocui.Gui) {
+	mx, my := g.MousePosition()
+	for _, view := range g.Views() {
+		view.Highlight = false
+	}
+	if v, err := g.ViewByPosition(mx, my); err == nil {
+		v.Highlight = true
+	}
+}
+
+func moveMsg(g *gocui.Gui) {
+	mx, my := g.MousePosition()
+	if !movingMsg && (mx != initialMouseX || my != initialMouseY) {
+		movingMsg = true
+	}
+	g.SetView("msg", mx-xOffset, my-yOffset, mx-xOffset+20, my-yOffset+2, 0)
+}
+
+func msgDown(g *gocui.Gui, v *gocui.View) error {
+	initialMouseX, initialMouseY = g.MousePosition()
+	if vx, vy, _, _, err := g.ViewPosition("msg"); err == nil {
+		xOffset = initialMouseX - vx
+		yOffset = initialMouseY - vy
+		msgMouseDown = true
+	}
+	return nil
+}
+
+func globalDown(g *gocui.Gui, v *gocui.View) error {
+	mx, my := g.MousePosition()
+	if vx0, vy0, vx1, vy1, err := g.ViewPosition("msg"); err == nil {
+		if mx >= vx0 && mx <= vx1 && my >= vy0 && my <= vy1 {
+			return msgDown(g, v)
+		}
+	}
+	globalMouseDown = true
+	maxX, _ := g.Size()
+	msg := fmt.Sprintf("Mouse down at: %d,%d", mx, my)
+	x := mx - len(msg)/2
+	if x < 0 {
+		x = 0
+	} else if x+len(msg)+1 > maxX-1 {
+		x = maxX - 1 - len(msg) - 1
+	}
+	if v, err := g.SetView("globalDown", x, my-1, x+len(msg)+1, my+1, 0); err != nil {
+		if !errors.Is(err, gocui.ErrUnknownView) {
+			return err
+		}
+		v.WriteString(msg)
+	}
+	return nil
+}
+
+func mouseUp(g *gocui.Gui, v *gocui.View) error {
+	if msgMouseDown {
+		msgMouseDown = false
+		if movingMsg {
+			movingMsg = false
+			return nil
+		} else {
+			g.DeleteView("msg")
+		}
+	} else if globalMouseDown {
+		globalMouseDown = false
+		g.DeleteView("globalDown")
+	}
+	return nil
+}