gilo/internal/editor/editor.go
2021-03-24 14:17:29 -04:00

63 lines
976 B
Go

package editor
import (
"timshome.page/gilo/internal/char"
"timshome.page/gilo/internal/terminal"
)
type editor struct {
rows int
cols int
}
func New() *editor {
cols, rows := terminal.Size()
e := new(editor)
e.cols = cols
e.rows = rows
return e
}
func (e *editor) RefreshScreen() {
terminal.ANSICode(terminal.ClearScreen)
terminal.ANSICode(terminal.ResetCursor)
e.drawRows()
terminal.ANSICode(terminal.ResetCursor)
}
func (e *editor) ProcessKeypress() bool {
ch, _ := terminal.ReadKey()
// Clean up on exit
if ch == char.Ctrl('q') {
terminal.ANSICode(terminal.ClearScreen)
terminal.ANSICode(terminal.ResetCursor)
return false
}
// Ugliest syntax structure ever?
switch {
case char.IsCtrl(ch):
terminal.WriteLn("%d", ch)
default:
terminal.WriteLn("%d ('%c')", ch, ch)
}
return true
}
func (e *editor) drawRows() {
for y :=0; y < e.rows; y += 1 {
terminal.Write("~")
if y < (e.rows - 1) {
terminal.Write("\r\n")
}
}
}