mirror of https://github.com/mum4k/termdash.git
240 lines
7.2 KiB
Go
240 lines
7.2 KiB
Go
// Copyright 2018 Google Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package termbox
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// event.go converts termbox events to the termdash format.
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import (
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"image"
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"github.com/mum4k/termdash/keyboard"
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"github.com/mum4k/termdash/mouse"
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"github.com/mum4k/termdash/terminalapi"
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tbx "github.com/nsf/termbox-go"
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)
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// newKeyboard creates a new termdash keyboard events with the provided keys.
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func newKeyboard(keys ...keyboard.Key) []terminalapi.Event {
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var evs []terminalapi.Event
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for _, k := range keys {
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evs = append(evs, &terminalapi.Keyboard{Key: k})
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}
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return evs
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}
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// convKey converts a termbox keyboard event to the termdash format.
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func convKey(tbxEv tbx.Event) []terminalapi.Event {
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if tbxEv.Key != 0 && tbxEv.Ch != 0 {
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return []terminalapi.Event{
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terminalapi.NewErrorf("the key event contain both a key(%v) and a character(%v)", tbxEv.Key, tbxEv.Ch),
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}
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}
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if tbxEv.Ch != 0 {
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return []terminalapi.Event{&terminalapi.Keyboard{
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Key: keyboard.Key(tbxEv.Ch),
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}}
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}
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switch k := tbxEv.Key; k {
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case tbx.KeySpace:
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return newKeyboard(keyboard.KeySpace)
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case tbx.KeyF1:
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return newKeyboard(keyboard.KeyF1)
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case tbx.KeyF2:
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return newKeyboard(keyboard.KeyF2)
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case tbx.KeyF3:
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return newKeyboard(keyboard.KeyF3)
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case tbx.KeyF4:
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return newKeyboard(keyboard.KeyF4)
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case tbx.KeyF5:
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return newKeyboard(keyboard.KeyF5)
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case tbx.KeyF6:
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return newKeyboard(keyboard.KeyF6)
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case tbx.KeyF7:
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return newKeyboard(keyboard.KeyF7)
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case tbx.KeyF8:
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return newKeyboard(keyboard.KeyF8)
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case tbx.KeyF9:
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return newKeyboard(keyboard.KeyF9)
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case tbx.KeyF10:
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return newKeyboard(keyboard.KeyF10)
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case tbx.KeyF11:
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return newKeyboard(keyboard.KeyF11)
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case tbx.KeyF12:
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return newKeyboard(keyboard.KeyF12)
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case tbx.KeyInsert:
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return newKeyboard(keyboard.KeyInsert)
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case tbx.KeyDelete:
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return newKeyboard(keyboard.KeyDelete)
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case tbx.KeyHome:
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return newKeyboard(keyboard.KeyHome)
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case tbx.KeyEnd:
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return newKeyboard(keyboard.KeyEnd)
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case tbx.KeyPgup:
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return newKeyboard(keyboard.KeyPgUp)
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case tbx.KeyPgdn:
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return newKeyboard(keyboard.KeyPgDn)
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case tbx.KeyArrowUp:
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return newKeyboard(keyboard.KeyArrowUp)
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case tbx.KeyArrowDown:
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return newKeyboard(keyboard.KeyArrowDown)
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case tbx.KeyArrowLeft:
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return newKeyboard(keyboard.KeyArrowLeft)
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case tbx.KeyArrowRight:
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return newKeyboard(keyboard.KeyArrowRight)
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case tbx.KeyBackspace /*, tbx.KeyCtrlH */ :
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return newKeyboard(keyboard.KeyBackspace)
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case tbx.KeyTab /*, tbx.KeyCtrlI */ :
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return newKeyboard(keyboard.KeyTab)
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case tbx.KeyEnter /*, tbx.KeyCtrlM*/ :
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return newKeyboard(keyboard.KeyEnter)
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case tbx.KeyEsc /*, tbx.KeyCtrlLsqBracket, tbx.KeyCtrl3 */ :
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return newKeyboard(keyboard.KeyEsc)
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case tbx.KeyCtrl2 /*, tbx.KeyCtrlTilde, tbx.KeyCtrlSpace */ :
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return newKeyboard(keyboard.KeyCtrl, '2')
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case tbx.KeyCtrl4 /*, tbx.KeyCtrlBackslash */ :
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return newKeyboard(keyboard.KeyCtrl, '4')
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case tbx.KeyCtrl5 /*, tbx.KeyCtrlRsqBracket */ :
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return newKeyboard(keyboard.KeyCtrl, '5')
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case tbx.KeyCtrl6:
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return newKeyboard(keyboard.KeyCtrl, '6')
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case tbx.KeyCtrl7 /*, tbx.KeyCtrlSlash, tbx.KeyCtrlUnderscore */ :
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return newKeyboard(keyboard.KeyCtrl, '7')
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case tbx.KeyCtrl8:
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return newKeyboard(keyboard.KeyCtrl, '8')
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case tbx.KeyCtrlA:
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return newKeyboard(keyboard.KeyCtrl, 'a')
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case tbx.KeyCtrlB:
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return newKeyboard(keyboard.KeyCtrl, 'b')
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case tbx.KeyCtrlC:
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return newKeyboard(keyboard.KeyCtrl, 'c')
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case tbx.KeyCtrlD:
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return newKeyboard(keyboard.KeyCtrl, 'd')
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case tbx.KeyCtrlE:
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return newKeyboard(keyboard.KeyCtrl, 'e')
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case tbx.KeyCtrlF:
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return newKeyboard(keyboard.KeyCtrl, 'f')
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case tbx.KeyCtrlG:
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return newKeyboard(keyboard.KeyCtrl, 'g')
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case tbx.KeyCtrlJ:
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return newKeyboard(keyboard.KeyCtrl, 'j')
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case tbx.KeyCtrlK:
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return newKeyboard(keyboard.KeyCtrl, 'k')
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case tbx.KeyCtrlL:
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return newKeyboard(keyboard.KeyCtrl, 'l')
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case tbx.KeyCtrlN:
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return newKeyboard(keyboard.KeyCtrl, 'n')
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case tbx.KeyCtrlO:
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return newKeyboard(keyboard.KeyCtrl, 'o')
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case tbx.KeyCtrlP:
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return newKeyboard(keyboard.KeyCtrl, 'p')
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case tbx.KeyCtrlQ:
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return newKeyboard(keyboard.KeyCtrl, 'q')
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case tbx.KeyCtrlR:
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return newKeyboard(keyboard.KeyCtrl, 'r')
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case tbx.KeyCtrlS:
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return newKeyboard(keyboard.KeyCtrl, 's')
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case tbx.KeyCtrlT:
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return newKeyboard(keyboard.KeyCtrl, 't')
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case tbx.KeyCtrlU:
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return newKeyboard(keyboard.KeyCtrl, 'u')
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case tbx.KeyCtrlV:
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return newKeyboard(keyboard.KeyCtrl, 'v')
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case tbx.KeyCtrlW:
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return newKeyboard(keyboard.KeyCtrl, 'w')
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case tbx.KeyCtrlX:
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return newKeyboard(keyboard.KeyCtrl, 'x')
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case tbx.KeyCtrlY:
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return newKeyboard(keyboard.KeyCtrl, 'y')
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case tbx.KeyCtrlZ:
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return newKeyboard(keyboard.KeyCtrl, 'z')
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default:
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return []terminalapi.Event{
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terminalapi.NewErrorf("unknown keyboard key %v in a keyboard event", k),
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}
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}
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}
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// convMouse converts a termbox mouse event to the termdash format.
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func convMouse(tbxEv tbx.Event) terminalapi.Event {
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var button mouse.Button
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switch k := tbxEv.Key; k {
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case tbx.MouseLeft:
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button = mouse.ButtonLeft
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case tbx.MouseMiddle:
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button = mouse.ButtonMiddle
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case tbx.MouseRight:
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button = mouse.ButtonRight
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case tbx.MouseRelease:
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button = mouse.ButtonRelease
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case tbx.MouseWheelUp:
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button = mouse.ButtonWheelUp
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case tbx.MouseWheelDown:
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button = mouse.ButtonWheelDown
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default:
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return terminalapi.NewErrorf("unknown mouse key %v in a mouse event", k)
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}
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return &terminalapi.Mouse{
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Position: image.Point{tbxEv.MouseX, tbxEv.MouseY},
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Button: button,
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}
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}
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// convResize converts a termbox resize event to the termdash format.
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func convResize(tbxEv tbx.Event) terminalapi.Event {
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size := image.Point{tbxEv.Width, tbxEv.Height}
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if size.X < 0 || size.Y < 0 {
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return terminalapi.NewErrorf("terminal resized to negative size: %v", size)
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}
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return &terminalapi.Resize{
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Size: size,
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}
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}
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// toTermdashEvents converts a termbox event to the termdash event format.
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func toTermdashEvents(tbxEv tbx.Event) []terminalapi.Event {
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switch t := tbxEv.Type; t {
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case tbx.EventInterrupt:
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return []terminalapi.Event{
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terminalapi.NewError("event type EventInterrupt isn't supported"),
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}
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case tbx.EventRaw:
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return []terminalapi.Event{
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terminalapi.NewError("event type EventRaw isn't supported"),
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}
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case tbx.EventNone:
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return []terminalapi.Event{
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terminalapi.NewError("event type EventNone isn't supported"),
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}
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case tbx.EventError:
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return []terminalapi.Event{
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terminalapi.NewErrorf("input error occurred: %v", tbxEv.Err),
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}
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case tbx.EventResize:
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return []terminalapi.Event{convResize(tbxEv)}
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case tbx.EventMouse:
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return []terminalapi.Event{convMouse(tbxEv)}
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case tbx.EventKey:
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return convKey(tbxEv)
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default:
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return []terminalapi.Event{
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terminalapi.NewErrorf("unknown termbox event type: %v", t),
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}
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}
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}
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