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authorDrew DeVault <sir@cmpwn.com>2019-03-21 19:50:54 -0400
committerDrew DeVault <sir@cmpwn.com>2019-03-21 19:50:54 -0400
commit28f393bdbdd865702cc8c928607d43a05dc7e6b8 (patch)
tree42c071d742b88a249d0ca53236640f7ab019afbb /widgets/terminal.go
parent699f1cf7a65a29ed512d62fd7626dd38d3cd7c7e (diff)
downloadaerc-28f393bdbdd865702cc8c928607d43a05dc7e6b8.tar.gz
Forward key events to child terminal
Diffstat (limited to 'widgets/terminal.go')
-rw-r--r--widgets/terminal.go136
1 files changed, 135 insertions, 1 deletions
diff --git a/widgets/terminal.go b/widgets/terminal.go
index 07b0f450..29a619c5 100644
--- a/widgets/terminal.go
+++ b/widgets/terminal.go
@@ -12,6 +12,81 @@ import (
"github.com/kr/pty"
)
+type vtermKey struct {
+ Key vterm.Key
+ Rune rune
+ Mod vterm.Modifier
+}
+
+var keyMap map[tcell.Key]vtermKey
+
+func directKey(key vterm.Key) vtermKey {
+ return vtermKey{key, 0, vterm.ModNone}
+}
+
+func runeMod(r rune, mod vterm.Modifier) vtermKey {
+ return vtermKey{vterm.KeyNone, r, mod}
+}
+
+func keyMod(key vterm.Key, mod vterm.Modifier) vtermKey {
+ return vtermKey{key, 0, mod}
+}
+
+func init() {
+ keyMap = make(map[tcell.Key]vtermKey)
+ keyMap[tcell.KeyCtrlSpace] = runeMod(' ', vterm.ModCtrl)
+ keyMap[tcell.KeyCtrlA] = runeMod('a', vterm.ModCtrl)
+ keyMap[tcell.KeyCtrlB] = runeMod('b', vterm.ModCtrl)
+ keyMap[tcell.KeyCtrlC] = runeMod('c', vterm.ModCtrl)
+ keyMap[tcell.KeyCtrlD] = runeMod('d', vterm.ModCtrl)
+ keyMap[tcell.KeyCtrlE] = runeMod('e', vterm.ModCtrl)
+ keyMap[tcell.KeyCtrlF] = runeMod('f', vterm.ModCtrl)
+ keyMap[tcell.KeyCtrlG] = runeMod('g', vterm.ModCtrl)
+ keyMap[tcell.KeyCtrlH] = runeMod('h', vterm.ModCtrl)
+ keyMap[tcell.KeyCtrlI] = runeMod('i', vterm.ModCtrl)
+ keyMap[tcell.KeyCtrlJ] = runeMod('j', vterm.ModCtrl)
+ keyMap[tcell.KeyCtrlK] = runeMod('k', vterm.ModCtrl)
+ keyMap[tcell.KeyCtrlL] = runeMod('l', vterm.ModCtrl)
+ keyMap[tcell.KeyCtrlM] = runeMod('m', vterm.ModCtrl)
+ keyMap[tcell.KeyCtrlN] = runeMod('n', vterm.ModCtrl)
+ keyMap[tcell.KeyCtrlO] = runeMod('o', vterm.ModCtrl)
+ keyMap[tcell.KeyCtrlP] = runeMod('p', vterm.ModCtrl)
+ keyMap[tcell.KeyCtrlQ] = runeMod('q', vterm.ModCtrl)
+ keyMap[tcell.KeyCtrlR] = runeMod('r', vterm.ModCtrl)
+ keyMap[tcell.KeyCtrlS] = runeMod('s', vterm.ModCtrl)
+ keyMap[tcell.KeyCtrlT] = runeMod('t', vterm.ModCtrl)
+ keyMap[tcell.KeyCtrlU] = runeMod('u', vterm.ModCtrl)
+ keyMap[tcell.KeyCtrlV] = runeMod('v', vterm.ModCtrl)
+ keyMap[tcell.KeyCtrlW] = runeMod('w', vterm.ModCtrl)
+ keyMap[tcell.KeyCtrlX] = runeMod('x', vterm.ModCtrl)
+ keyMap[tcell.KeyCtrlY] = runeMod('y', vterm.ModCtrl)
+ keyMap[tcell.KeyCtrlZ] = runeMod('z', vterm.ModCtrl)
+ keyMap[tcell.KeyCtrlBackslash] = runeMod('\\', vterm.ModCtrl)
+ keyMap[tcell.KeyCtrlCarat] = runeMod('^', vterm.ModCtrl)
+ keyMap[tcell.KeyCtrlUnderscore] = runeMod('_', vterm.ModCtrl)
+ keyMap[tcell.KeyEnter] = directKey(vterm.KeyEnter)
+ keyMap[tcell.KeyTab] = directKey(vterm.KeyTab)
+ keyMap[tcell.KeyBackspace] = directKey(vterm.KeyBackspace)
+ keyMap[tcell.KeyEscape] = directKey(vterm.KeyEscape)
+ keyMap[tcell.KeyUp] = directKey(vterm.KeyUp)
+ keyMap[tcell.KeyDown] = directKey(vterm.KeyDown)
+ keyMap[tcell.KeyLeft] = directKey(vterm.KeyLeft)
+ keyMap[tcell.KeyRight] = directKey(vterm.KeyRight)
+ keyMap[tcell.KeyInsert] = directKey(vterm.KeyIns)
+ keyMap[tcell.KeyDelete] = directKey(vterm.KeyDel)
+ keyMap[tcell.KeyHome] = directKey(vterm.KeyHome)
+ keyMap[tcell.KeyEnd] = directKey(vterm.KeyEnd)
+ keyMap[tcell.KeyPgUp] = directKey(vterm.KeyPageUp)
+ keyMap[tcell.KeyPgDn] = directKey(vterm.KeyPageDown)
+ for i := 0; i < 64; i++ {
+ keyMap[tcell.Key(int(tcell.KeyF1)+i)] =
+ directKey(vterm.Key(int(vterm.KeyFunction0) + i))
+ }
+ keyMap[tcell.KeyTAB] = directKey(vterm.KeyTab)
+ keyMap[tcell.KeyESC] = directKey(vterm.KeyEscape)
+ keyMap[tcell.KeyDEL] = directKey(vterm.KeyBackspace)
+}
+
type Terminal struct {
closed bool
cmd *exec.Cmd
@@ -43,11 +118,14 @@ func NewTerminal(cmd *exec.Cmd) (*Terminal, error) {
for {
n, err := term.pty.Read(buf)
if err != nil {
- term.Close(err)
+ // These are generally benine errors when the process exits
+ term.Close(nil)
+ return
}
n, err = term.vterm.Write(buf[:n])
if err != nil {
term.Close(err)
+ return
}
term.Invalidate()
}
@@ -87,6 +165,25 @@ func NewTerminal(cmd *exec.Cmd) (*Terminal, error) {
return term, nil
}
+func (term *Terminal) flushTerminal() {
+ buf := make([]byte, 2048)
+ for {
+ n, err := term.vterm.Read(buf)
+ if err != nil {
+ term.Close(err)
+ return
+ }
+ if n == 0 {
+ break
+ }
+ n, err = term.pty.Write(buf[:n])
+ if err != nil {
+ term.Close(err)
+ return
+ }
+ }
+}
+
func (term *Terminal) Close(err error) {
term.err = err
if term.vterm != nil {
@@ -193,7 +290,44 @@ func (term *Terminal) Focus(focus bool) {
term.resetCursor()
}
+func convertMods(mods tcell.ModMask) vterm.Modifier {
+ var (
+ ret uint = 0
+ mask uint = uint(mods)
+ )
+ if mask&uint(tcell.ModShift) > 0 {
+ ret |= uint(vterm.ModShift)
+ }
+ if mask&uint(tcell.ModCtrl) > 0 {
+ ret |= uint(vterm.ModCtrl)
+ }
+ if mask&uint(tcell.ModAlt) > 0 {
+ ret |= uint(vterm.ModAlt)
+ }
+ return vterm.Modifier(ret)
+}
+
func (term *Terminal) Event(event tcell.Event) bool {
+ switch event := event.(type) {
+ case *tcell.EventKey:
+ if event.Key() == tcell.KeyRune {
+ term.vterm.KeyboardUnichar(
+ event.Rune(), convertMods(event.Modifiers()))
+ } else {
+ if key, ok := keyMap[event.Key()]; ok {
+ if key.Key == vterm.KeyNone {
+ term.vterm.KeyboardUnichar(
+ key.Rune, key.Mod)
+ } else if key.Mod == vterm.ModNone {
+ term.vterm.KeyboardKey(key.Key,
+ convertMods(event.Modifiers()))
+ } else {
+ term.vterm.KeyboardKey(key.Key, key.Mod)
+ }
+ }
+ }
+ term.flushTerminal()
+ }
return false
}