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// 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"
"github.com/awesome-gocui/gocui"
)
func MouseMain() {
g, err := gocui.NewGui(gocui.OutputNormal, true)
if err != nil {
panic(err)
}
defer g.Close()
me.baseGui = g
g.Cursor = true
g.Mouse = true
g.SetManagerFunc(layout)
if err := defaultKeybindings(g); err != nil {
panic(err)
}
if err := g.MainLoop(); err != nil && !errors.Is(err, gocui.ErrQuit) {
panic(err)
}
}
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")
}
*/
helplayout(g)
updateHighlightedView(g)
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
}
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