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// Copyright 2018 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package termbox
// event.go converts termbox events to the termdash format.
import (
"image"
"github.com/mum4k/termdash/keyboard"
"github.com/mum4k/termdash/mouse"
"github.com/mum4k/termdash/terminal/terminalapi"
tbx "github.com/nsf/termbox-go"
)
// tbxToTd maps termbox key values to the termdash format.
var tbxToTd = map[tbx.Key]keyboard.Key{
tbx.KeySpace: keyboard.KeySpace,
tbx.KeyF1: keyboard.KeyF1,
tbx.KeyF2: keyboard.KeyF2,
tbx.KeyF3: keyboard.KeyF3,
tbx.KeyF4: keyboard.KeyF4,
tbx.KeyF5: keyboard.KeyF5,
tbx.KeyF6: keyboard.KeyF6,
tbx.KeyF7: keyboard.KeyF7,
tbx.KeyF8: keyboard.KeyF8,
tbx.KeyF9: keyboard.KeyF9,
tbx.KeyF10: keyboard.KeyF10,
tbx.KeyF11: keyboard.KeyF11,
tbx.KeyF12: keyboard.KeyF12,
tbx.KeyInsert: keyboard.KeyInsert,
tbx.KeyDelete: keyboard.KeyDelete,
tbx.KeyHome: keyboard.KeyHome,
tbx.KeyEnd: keyboard.KeyEnd,
tbx.KeyPgup: keyboard.KeyPgUp,
tbx.KeyPgdn: keyboard.KeyPgDn,
tbx.KeyArrowUp: keyboard.KeyArrowUp,
tbx.KeyArrowDown: keyboard.KeyArrowDown,
tbx.KeyArrowLeft: keyboard.KeyArrowLeft,
tbx.KeyArrowRight: keyboard.KeyArrowRight,
tbx.KeyCtrlTilde: keyboard.KeyCtrlTilde,
tbx.KeyCtrlA: keyboard.KeyCtrlA,
tbx.KeyCtrlB: keyboard.KeyCtrlB,
tbx.KeyCtrlC: keyboard.KeyCtrlC,
tbx.KeyCtrlD: keyboard.KeyCtrlD,
tbx.KeyCtrlE: keyboard.KeyCtrlE,
tbx.KeyCtrlF: keyboard.KeyCtrlF,
tbx.KeyCtrlG: keyboard.KeyCtrlG,
tbx.KeyBackspace: keyboard.KeyBackspace,
tbx.KeyTab: keyboard.KeyTab,
tbx.KeyCtrlJ: keyboard.KeyCtrlJ,
tbx.KeyCtrlK: keyboard.KeyCtrlK,
tbx.KeyCtrlL: keyboard.KeyCtrlL,
tbx.KeyEnter: keyboard.KeyEnter,
tbx.KeyCtrlN: keyboard.KeyCtrlN,
tbx.KeyCtrlO: keyboard.KeyCtrlO,
tbx.KeyCtrlP: keyboard.KeyCtrlP,
tbx.KeyCtrlQ: keyboard.KeyCtrlQ,
tbx.KeyCtrlR: keyboard.KeyCtrlR,
tbx.KeyCtrlS: keyboard.KeyCtrlS,
tbx.KeyCtrlT: keyboard.KeyCtrlT,
tbx.KeyCtrlU: keyboard.KeyCtrlU,
tbx.KeyCtrlV: keyboard.KeyCtrlV,
tbx.KeyCtrlW: keyboard.KeyCtrlW,
tbx.KeyCtrlX: keyboard.KeyCtrlX,
tbx.KeyCtrlY: keyboard.KeyCtrlY,
tbx.KeyCtrlZ: keyboard.KeyCtrlZ,
tbx.KeyEsc: keyboard.KeyEsc,
tbx.KeyCtrl4: keyboard.KeyCtrl4,
tbx.KeyCtrl5: keyboard.KeyCtrl5,
tbx.KeyCtrl6: keyboard.KeyCtrl6,
tbx.KeyCtrl7: keyboard.KeyCtrl7,
tbx.KeyBackspace2: keyboard.KeyBackspace2,
}
// convKey converts a termbox keyboard event to the termdash format.
func convKey(tbxEv tbx.Event) terminalapi.Event {
if tbxEv.Key != 0 && tbxEv.Ch != 0 {
return terminalapi.NewErrorf("the key event contain both a key(%v) and a character(%v)", tbxEv.Key, tbxEv.Ch)
}
if tbxEv.Ch != 0 {
return &terminalapi.Keyboard{
Key: keyboard.Key(tbxEv.Ch),
}
}
k, ok := tbxToTd[tbxEv.Key]
if !ok {
return terminalapi.NewErrorf("unknown keyboard key '%v' in a keyboard event", k)
}
return &terminalapi.Keyboard{
Key: k,
}
}
// convMouse converts a termbox mouse event to the termdash format.
func convMouse(tbxEv tbx.Event) terminalapi.Event {
var button mouse.Button
switch k := tbxEv.Key; k {
case tbx.MouseLeft:
button = mouse.ButtonLeft
case tbx.MouseMiddle:
button = mouse.ButtonMiddle
case tbx.MouseRight:
button = mouse.ButtonRight
case tbx.MouseRelease:
button = mouse.ButtonRelease
case tbx.MouseWheelUp:
button = mouse.ButtonWheelUp
case tbx.MouseWheelDown:
button = mouse.ButtonWheelDown
default:
return terminalapi.NewErrorf("unknown mouse key %v in a mouse event", k)
}
return &terminalapi.Mouse{
Position: image.Point{tbxEv.MouseX, tbxEv.MouseY},
Button: button,
}
}
// convResize converts a termbox resize event to the termdash format.
func convResize(tbxEv tbx.Event) terminalapi.Event {
size := image.Point{tbxEv.Width, tbxEv.Height}
if size.X < 0 || size.Y < 0 {
return terminalapi.NewErrorf("terminal resized to negative size: %v", size)
}
return &terminalapi.Resize{
Size: size,
}
}
// toTermdashEvents converts a termbox event to the termdash event format.
func toTermdashEvents(tbxEv tbx.Event) []terminalapi.Event {
switch t := tbxEv.Type; t {
case tbx.EventInterrupt:
return []terminalapi.Event{
terminalapi.NewError("event type EventInterrupt isn't supported"),
}
case tbx.EventRaw:
return []terminalapi.Event{
terminalapi.NewError("event type EventRaw isn't supported"),
}
case tbx.EventNone:
return []terminalapi.Event{
terminalapi.NewError("event type EventNone isn't supported"),
}
case tbx.EventError:
return []terminalapi.Event{
terminalapi.NewErrorf("input error occurred: %v", tbxEv.Err),
}
case tbx.EventResize:
return []terminalapi.Event{convResize(tbxEv)}
case tbx.EventMouse:
return []terminalapi.Event{convMouse(tbxEv)}
case tbx.EventKey:
return []terminalapi.Event{
convKey(tbxEv),
}
default:
return []terminalapi.Event{
terminalapi.NewErrorf("unknown termbox event type: %v", t),
}
}
}
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