79 lines
1.4 KiB
Go
79 lines
1.4 KiB
Go
package editor
|
|
|
|
import (
|
|
"strings"
|
|
"timshome.page/gilo/fn"
|
|
"timshome.page/gilo/terminal"
|
|
)
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// !Editor
|
|
// ----------------------------------------------------------------------------
|
|
|
|
type cursor struct {
|
|
x int
|
|
y int
|
|
}
|
|
|
|
type editor struct {
|
|
screen *terminal.Screen
|
|
cursor *cursor
|
|
}
|
|
|
|
func New() *editor {
|
|
screen := terminal.Size()
|
|
cursor := &cursor { 0, 0 }
|
|
|
|
return &editor{screen, cursor }
|
|
}
|
|
|
|
func (e *editor) ProcessKeypress() bool {
|
|
var runes []rune
|
|
|
|
for ch, size := terminal.ReadKey(); size != 0; ch, size = terminal.ReadKey() {
|
|
if ch == fn.Ctrl('q') {
|
|
// Clean up on exit
|
|
terminal.Write(terminal.ClearScreen + terminal.ResetCursor)
|
|
|
|
return false
|
|
}
|
|
|
|
runes = append(runes, ch)
|
|
}
|
|
|
|
terminal.Write("%v", runes)
|
|
str := string(runes)
|
|
runes = runes[:0]
|
|
|
|
// Escape sequences can be less fun...
|
|
if strings.Contains(str, terminal.EscPrefix) {
|
|
code := strings.TrimPrefix(str, terminal.EscPrefix)
|
|
|
|
switch code {
|
|
case KeyArrowUp, KeyArrowDown, KeyArrowLeft, KeyArrowRight:
|
|
e.moveCursor(code)
|
|
runes = runes[:0]
|
|
return true
|
|
default:
|
|
// Do something later
|
|
terminal.Write("Code: %v", str)
|
|
}
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
func (e *editor) moveCursor (rawKey string) {
|
|
key := keyMap[rawKey]
|
|
|
|
switch key {
|
|
case keyLeft:
|
|
e.cursor.x -= 1
|
|
case keyRight:
|
|
e.cursor.x += 1
|
|
case keyUp:
|
|
e.cursor.y -= 1
|
|
case keyDown:
|
|
e.cursor.y += 1
|
|
}
|
|
} |