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https://github.com/br0xen/termbox-util.git
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Initial Commit
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78
termbox-test/main.go
Normal file
78
termbox-test/main.go
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@ -0,0 +1,78 @@
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package main
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import (
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"github.com/nsf/termbox-go"
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"gogs.bullercodeworks.com/brian/termbox-util"
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"os"
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"syscall"
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)
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var keep_running bool
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func main() {
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keep_running = true
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err := termbox.Init()
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if err != nil {
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panic(err)
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}
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defer termbox.Close()
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termbox.SetOutputMode(termbox.Output256)
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mainLoop()
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}
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var input *termbox_util.InputField
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//var input *termbox_util.InputModal
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func layoutAndDrawScreen() {
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termbox.Clear(0, termbox.ColorBlack)
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drawScreen()
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termbox.Flush()
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}
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func drawScreen() {
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w, h := termbox.Size()
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termbox_util.DrawStringAtPoint(termbox_util.AlignText("Termbox Utility Test", w, termbox_util.ALIGN_CENTER), 0, 0, termbox.ColorWhite, termbox.ColorRed)
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if input == nil {
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// mw, mh := w/4, h/4
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// mx, my := w-(mw/2), h-(mh/2)
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mw, mh := w/4, 2
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mx, my := (w/2)-(mw/2), (h/2)-(mh/2)
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// input = termbox_util.CreateInputModal("Test Input", mx, my, mw, mh, termbox.ColorWhite, termbox.ColorBlack)
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input = termbox_util.CreateInputField(mx, my, mw, mh, termbox.ColorWhite, termbox.ColorBlack)
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input.SetBordered(true)
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}
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input.Draw()
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}
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func handleKeyEvent(event termbox.Event) bool {
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if event.Key == termbox.KeyEsc {
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return false
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} else {
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input.HandleKeyPress(event)
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}
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return true
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}
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func mainLoop() {
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layoutAndDrawScreen()
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for {
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event := termbox.PollEvent()
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if event.Type == termbox.EventKey {
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if event.Key == termbox.KeyCtrlZ {
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process, _ := os.FindProcess(os.Getpid())
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termbox.Close()
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process.Signal(syscall.SIGSTOP)
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termbox.Init()
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}
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keep_running = handleKeyEvent(event)
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if !keep_running {
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break
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}
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layoutAndDrawScreen()
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}
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if event.Type == termbox.EventResize {
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layoutAndDrawScreen()
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}
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}
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}
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113
termbox_inputfield.go
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113
termbox_inputfield.go
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@ -0,0 +1,113 @@
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package termbox_util
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import (
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"fmt"
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"github.com/nsf/termbox-go"
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)
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type InputField struct {
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value string
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x, y, width, height int
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cursor int
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fg, bg termbox.Attribute
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bordered bool
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}
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func CreateInputField(x, y, w, h int, fg, bg termbox.Attribute) *InputField {
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i := InputField{x: x, y: y, width: w, height: h, fg: fg, bg: bg}
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return &i
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}
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func (i *InputField) GetValue() string { return i.value }
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func (i *InputField) SetValue(s string) *InputField {
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i.value = s
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return i
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}
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func (i *InputField) GetX() int { return i.x }
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func (i *InputField) SetX(x int) *InputField {
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i.x = x
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return i
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}
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func (i *InputField) GetY() int { return i.y }
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func (i *InputField) SetY(y int) *InputField {
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i.y = y
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return i
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}
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func (i *InputField) GetWidth() int { return i.width }
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func (i *InputField) SetWidth(w int) *InputField {
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i.width = w
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return i
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}
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func (i *InputField) GetHeight() int { return i.height }
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func (i *InputField) SetHeight(h int) *InputField {
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i.height = h
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return i
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}
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func (i *InputField) IsBordered() bool { return i.bordered }
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func (i *InputField) SetBordered(b bool) *InputField {
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i.bordered = b
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return i
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}
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func (i *InputField) HandleKeyPress(event termbox.Event) bool {
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if event.Key == termbox.KeyEnter {
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// Done editing
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} else if event.Key == termbox.KeyBackspace || event.Key == termbox.KeyBackspace2 {
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if len(i.value) > 0 {
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i.value = i.value[:len(i.value)-1]
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}
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} else if event.Key == termbox.KeyArrowLeft {
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if i.cursor+len(i.value) > 0 {
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i.cursor -= 1
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}
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} else if event.Key == termbox.KeyArrowRight {
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if i.cursor < 0 {
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i.cursor += 1
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}
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} else {
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if i.cursor+len(i.value) == 0 {
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i.value = fmt.Sprintf("%s%s", string(event.Ch), i.value)
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} else if i.cursor == 0 {
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i.value = fmt.Sprintf("%s%s", i.value, string(event.Ch))
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} else {
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str_pt_1 := i.value
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str_pt_2 := i.value
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i.value = fmt.Sprintf("%s%s%s", str_pt_1, string(event.Ch), str_pt_2)
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}
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}
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return true
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}
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func (i *InputField) Draw() {
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if i.bordered {
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DrawBorder(i.x, i.y, i.x+i.width, i.y+i.height, i.fg, i.bg)
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}
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var str_pt_1, str_pt_2 string
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var cursor_rune rune
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if len(i.value) > 0 {
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if i.cursor+len(i.value) == 0 {
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str_pt_1 = ""
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str_pt_2 = i.value[1:]
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cursor_rune = rune(i.value[1])
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} else if i.cursor == 0 {
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str_pt_1 = i.value
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str_pt_2 = ""
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cursor_rune = ' '
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} else {
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str_pt_1 = i.value[:(len(i.value) + i.cursor)]
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str_pt_2 = i.value[(len(i.value)+i.cursor)+1:]
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cursor_rune = rune(i.value[len(i.value)+i.cursor])
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}
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} else {
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str_pt_1, str_pt_2, cursor_rune = "", "", ' '
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}
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x, y := DrawStringAtPoint(str_pt_1, i.x+1, i.y+1, i.fg, i.bg)
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termbox.SetCell(x, y, cursor_rune, i.bg, i.fg)
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DrawStringAtPoint(str_pt_2, x+1, y, i.fg, i.bg)
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}
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134
termbox_inputmodal.go
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134
termbox_inputmodal.go
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@ -0,0 +1,134 @@
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package termbox_util
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import (
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"github.com/nsf/termbox-go"
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)
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type InputModal struct {
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title string
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text string
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value string
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x, y, width, height int
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show_help bool
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cursor int
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bg, fg termbox.Attribute
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}
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func CreateInputModal(text string, x, y, width, height int, fg, bg termbox.Attribute) *InputModal {
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i := InputModal{text: text, x: x, y: y, width: width, height: height, fg: fg, bg: bg}
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return &i
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}
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func (i *InputModal) GetTitle() string { return i.title }
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func (i *InputModal) SetTitle(s string) *InputModal {
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i.title = s
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return i
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}
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func (i *InputModal) GetText() string { return i.text }
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func (i *InputModal) SetText(s string) *InputModal {
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i.text = s
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return i
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}
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func (i *InputModal) GetValue() string { return i.value }
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func (i *InputModal) SetValue(s string) *InputModal {
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i.value = s
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return i
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}
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func (i *InputModal) GetX() int { return i.x }
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func (i *InputModal) SetX(x int) *InputModal {
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i.x = x
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return i
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}
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func (i *InputModal) GetY() int { return i.y }
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func (i *InputModal) SetY(y int) *InputModal {
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i.y = y
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return i
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}
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func (i *InputModal) GetWidth() int { return i.width }
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func (i *InputModal) SetWidth(width int) *InputModal {
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i.width = width
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return i
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}
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func (i *InputModal) GetHeight() int { return i.height }
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func (i *InputModal) SetHeight(height int) *InputModal {
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i.height = height
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return i
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}
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func (i *InputModal) HelpIsShown() bool { return i.show_help }
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func (i *InputModal) ShowHelp(b bool) *InputModal {
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i.show_help = b
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return i
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}
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func (i *InputModal) GetCursorPos() int { return i.cursor }
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func (i *InputModal) SetCursorPos(c int) *InputModal {
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i.cursor = c
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return i
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}
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func (i *InputModal) MoveCursorLeft() *InputModal {
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if len(i.value)+(i.GetCursorPos()) > 0 {
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i.cursor = i.GetCursorPos() - 1
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}
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return i
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}
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func (i *InputModal) MoveCursorRight() *InputModal {
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if i.GetCursorPos() < 0 {
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i.cursor = i.GetCursorPos() + 1
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}
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return i
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}
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func (i *InputModal) GetBackground() termbox.Attribute { return i.bg }
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func (i *InputModal) SetBackground(bg termbox.Attribute) *InputModal {
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i.bg = bg
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return i
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}
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func (i *InputModal) GetForeground() termbox.Attribute { return i.fg }
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func (i *InputModal) SetForeground(fg termbox.Attribute) *InputModal {
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i.fg = fg
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return i
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}
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func (i *InputModal) HandleKeyPress(event termbox.Event) bool {
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if event.Key == termbox.KeyEnter {
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// Done editing
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} else if event.Key == termbox.KeyBackspace || event.Key == termbox.KeyBackspace2 {
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i.value = i.value[:len(i.value)-1]
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i.cursor -= 1
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} else {
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i.value += string(event.Ch)
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i.cursor += 1
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}
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return true
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}
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func (i *InputModal) Draw() {
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// First blank out the area we'll be putting the modal
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FillWithChar(' ', i.x, i.y, i.x+i.width, i.y+i.height, i.fg, i.bg)
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// Now draw the border
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DrawBorder(i.x, i.y, i.x+i.width, i.y+i.height, i.fg, i.bg)
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DrawBorder(i.x+2, i.y+2, i.x+i.width-2, i.y+4, i.fg, i.bg)
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// TODO: Output Cursor at appropriate spot
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var output_string_1, output_string_2 string
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var cursor_rune rune
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if len(i.value) > 0 {
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output_string_1 = i.value[:(len(i.value) - 1 + i.cursor)]
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output_string_2 = i.value[(len(i.value) - 1 + i.cursor):]
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cursor_rune = ' '
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} else {
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output_string_1 = ""
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output_string_2 = ""
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cursor_rune = ' '
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}
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DrawStringAtPoint(output_string_1, i.x+3, i.y+3, i.fg, i.bg)
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termbox.SetCell(i.x+len(output_string_1), i.y+3, cursor_rune, i.bg, i.fg)
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DrawStringAtPoint(output_string_2, i.x+3+len(output_string_1)+1, i.y+3, i.fg, i.bg)
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}
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57
termbox_util.go
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57
termbox_util.go
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@ -0,0 +1,57 @@
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package termbox_util
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import (
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"fmt"
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"github.com/nsf/termbox-go"
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"strings"
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)
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type TextAlignment int
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const (
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ALIGN_LEFT = iota
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ALIGN_CENTER
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ALIGN_RIGHT
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)
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/* Basic Output Helpers */
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func DrawStringAtPoint(str string, x int, y int, fg termbox.Attribute, bg termbox.Attribute) (int, int) {
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x_pos := x
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for _, runeValue := range str {
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termbox.SetCell(x_pos, y, runeValue, fg, bg)
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x_pos++
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}
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return x_pos, y
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}
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func FillWithChar(r rune, x1, y1, x2, y2 int, fg termbox.Attribute, bg termbox.Attribute) {
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for xx := x1; xx <= x2; xx++ {
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for yx := y1; yx <= y2; yx++ {
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termbox.SetCell(xx, yx, r, fg, bg)
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}
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}
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}
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func DrawBorder(x1, y1, x2, y2 int, fg termbox.Attribute, bg termbox.Attribute) {
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FillWithChar('|', x1, y1, x1, y2, fg, bg)
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FillWithChar('|', x2, y1, x2, y2, fg, bg)
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FillWithChar('-', x1, y1, x2, y1, fg, bg)
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FillWithChar('-', x1, y2, x2, y2, fg, bg)
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}
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func AlignText(txt string, width int, align TextAlignment) string {
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num_spaces := width - len(txt)
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switch align {
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case ALIGN_CENTER:
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return fmt.Sprintf("%s%s%s",
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strings.Repeat(" ", num_spaces/2),
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txt, strings.Repeat(" ", num_spaces/2),
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)
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case ALIGN_RIGHT:
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return fmt.Sprintf("%s%s", strings.Repeat(" ", num_spaces), txt)
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default:
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return fmt.Sprintf("%s%s", txt, strings.Repeat(" ", num_spaces))
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}
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}
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/* More advanced things are in their respective files*/
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