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Delete ncurses implementation

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Junegunn Choi 2017-09-02 03:19:50 +09:00
parent 655dfb8328
commit e3e7b3360c
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1 changed files with 0 additions and 505 deletions
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src/tui/ncurses.go
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@ -1,505 +0,0 @@
// +build ncurses
// +build !windows
// +build !tcell
package tui
/*
#include <ncurses.h>
#include <locale.h>
#cgo !static LDFLAGS: -lncurses
#cgo static LDFLAGS: -l:libncursesw.a -l:libtinfo.a -l:libgpm.a -ldl
#cgo android static LDFLAGS: -l:libncurses.a -fPIE -march=armv7-a -mfpu=neon -mhard-float -Wl,--no-warn-mismatch
FILE* c_tty() {
return fopen("/dev/tty", "r");
}
SCREEN* c_newterm(FILE* tty) {
return newterm(NULL, stderr, tty);
}
int c_getcurx(WINDOW* win) {
return getcurx(win);
}
*/
import "C"
import (
"os"
"strconv"
"strings"
"time"
"unicode/utf8"
)
func HasFullscreenRenderer() bool {
return true
}
type Attr C.uint
type CursesWindow struct {
impl *C.WINDOW
top int
left int
width int
height int
}
func (w *CursesWindow) Top() int {
return w.top
}
func (w *CursesWindow) Left() int {
return w.left
}
func (w *CursesWindow) Width() int {
return w.width
}
func (w *CursesWindow) Height() int {
return w.height
}
func (w *CursesWindow) Refresh() {
C.wnoutrefresh(w.impl)
}
func (w *CursesWindow) FinishFill() {
// NO-OP
}
const (
Bold Attr = C.A_BOLD
Dim = C.A_DIM
Blink = C.A_BLINK
Reverse = C.A_REVERSE
Underline = C.A_UNDERLINE
)
var Italic Attr = C.A_VERTICAL << 1 // FIXME
const (
AttrRegular Attr = 0
)
var (
_screen *C.SCREEN
_colorMap map[int]int16
_colorFn func(ColorPair, Attr) (C.short, C.int)
)
func init() {
_colorMap = make(map[int]int16)
if strings.HasPrefix(C.GoString(C.curses_version()), "ncurses 5") {
Italic = C.A_NORMAL
}
}
func (a Attr) Merge(b Attr) Attr {
return a | b
}
func (r *FullscreenRenderer) defaultTheme() *ColorTheme {
if C.tigetnum(C.CString("colors")) >= 256 {
return Dark256
}
return Default16
}
func (r *FullscreenRenderer) Init() {
C.setlocale(C.LC_ALL, C.CString(""))
tty := C.c_tty()
if tty == nil {
errorExit("Failed to open /dev/tty")
}
_screen = C.c_newterm(tty)
if _screen == nil {
errorExit("Invalid $TERM: " + os.Getenv("TERM"))
}
C.set_term(_screen)
if r.mouse {
C.mousemask(C.ALL_MOUSE_EVENTS, nil)
C.mouseinterval(0)
}
C.noecho()
C.raw() // stty dsusp undef
C.nonl()
C.keypad(C.stdscr, true)
delay := 50
delayEnv := os.Getenv("ESCDELAY")
if len(delayEnv) > 0 {
num, err := strconv.Atoi(delayEnv)
if err == nil && num >= 0 {
delay = num
}
}
C.set_escdelay(C.int(delay))
if r.theme != nil {
C.start_color()
initTheme(r.theme, r.defaultTheme(), r.forceBlack)
initPairs(r.theme)
C.bkgd(C.chtype(C.COLOR_PAIR(C.int(ColNormal.index()))))
_colorFn = attrColored
} else {
initTheme(r.theme, nil, r.forceBlack)
_colorFn = attrMono
}
C.nodelay(C.stdscr, true)
ch := C.getch()
if ch != C.ERR {
C.ungetch(ch)
}
C.nodelay(C.stdscr, false)
}
func initPairs(theme *ColorTheme) {
C.assume_default_colors(C.int(theme.Fg), C.int(theme.Bg))
for _, pair := range []ColorPair{
ColNormal,
ColPrompt,
ColMatch,
ColCurrent,
ColCurrentMatch,
ColSpinner,
ColInfo,
ColCursor,
ColSelected,
ColHeader,
ColBorder} {
C.init_pair(C.short(pair.index()), C.short(pair.Fg()), C.short(pair.Bg()))
}
}
func (r *FullscreenRenderer) Pause(bool) {
C.endwin()
}
func (r *FullscreenRenderer) Resume(bool) {
}
func (r *FullscreenRenderer) Close() {
C.endwin()
C.delscreen(_screen)
}
func (r *FullscreenRenderer) NewWindow(top int, left int, width int, height int, borderStyle BorderStyle) Window {
win := C.newwin(C.int(height), C.int(width), C.int(top), C.int(left))
if r.theme != nil {
C.wbkgd(win, C.chtype(C.COLOR_PAIR(C.int(ColNormal.index()))))
}
// FIXME Does not implement BorderHorizontal
if borderStyle != BorderNone {
pair, attr := _colorFn(ColBorder, 0)
C.wcolor_set(win, pair, nil)
C.wattron(win, attr)
C.box(win, 0, 0)
C.wattroff(win, attr)
C.wcolor_set(win, 0, nil)
}
return &CursesWindow{
impl: win,
top: top,
left: left,
width: width,
height: height,
}
}
func attrColored(color ColorPair, a Attr) (C.short, C.int) {
return C.short(color.index()), C.int(a)
}
func attrMono(color ColorPair, a Attr) (C.short, C.int) {
return 0, C.int(attrFor(color, a))
}
func (r *FullscreenRenderer) MaxX() int {
return int(C.COLS)
}
func (r *FullscreenRenderer) MaxY() int {
return int(C.LINES)
}
func (w *CursesWindow) Close() {
C.delwin(w.impl)
}
func (w *CursesWindow) Enclose(y int, x int) bool {
return bool(C.wenclose(w.impl, C.int(y), C.int(x)))
}
func (w *CursesWindow) Move(y int, x int) {
C.wmove(w.impl, C.int(y), C.int(x))
}
func (w *CursesWindow) MoveAndClear(y int, x int) {
w.Move(y, x)
C.wclrtoeol(w.impl)
}
func (w *CursesWindow) Print(text string) {
C.waddstr(w.impl, C.CString(strings.Map(func(r rune) rune {
if r < 32 {
return -1
}
return r
}, text)))
}
func (w *CursesWindow) CPrint(color ColorPair, attr Attr, text string) {
p, a := _colorFn(color, attr)
C.wcolor_set(w.impl, p, nil)
C.wattron(w.impl, a)
w.Print(text)
C.wattroff(w.impl, a)
C.wcolor_set(w.impl, 0, nil)
}
func (r *FullscreenRenderer) Clear() {
C.clear()
C.endwin()
}
func (r *FullscreenRenderer) Refresh() {
C.refresh()
}
func (w *CursesWindow) Erase() {
C.werase(w.impl)
}
func (w *CursesWindow) X() int {
return int(C.c_getcurx(w.impl))
}
func (r *FullscreenRenderer) DoesAutoWrap() bool {
return true
}
func (r *FullscreenRenderer) IsOptimized() bool {
return true
}
func (w *CursesWindow) Fill(str string) FillReturn {
if C.waddstr(w.impl, C.CString(str)) == C.OK {
return FillContinue
}
return FillSuspend
}
func (w *CursesWindow) CFill(fg Color, bg Color, attr Attr, str string) FillReturn {
index := ColorPair{fg, bg, -1}.index()
C.wcolor_set(w.impl, C.short(index), nil)
C.wattron(w.impl, C.int(attr))
ret := w.Fill(str)
C.wattroff(w.impl, C.int(attr))
C.wcolor_set(w.impl, 0, nil)
return ret
}
func (r *FullscreenRenderer) RefreshWindows(windows []Window) {
for _, w := range windows {
w.Refresh()
}
C.doupdate()
}
func (p ColorPair) index() int16 {
if p.id >= 0 {
return p.id
}
// ncurses does not support 24-bit colors
if p.is24() {
return ColDefault.index()
}
key := p.key()
if found, prs := _colorMap[key]; prs {
return found
}
id := int16(len(_colorMap)) + ColUser.id
C.init_pair(C.short(id), C.short(p.Fg()), C.short(p.Bg()))
_colorMap[key] = id
return id
}
func consume(expects ...rune) bool {
for _, r := range expects {
if int(C.getch()) != int(r) {
return false
}
}
return true
}
func escSequence() Event {
C.nodelay(C.stdscr, true)
defer func() {
C.nodelay(C.stdscr, false)
}()
c := C.getch()
switch c {
case C.ERR:
return Event{ESC, 0, nil}
case CtrlM:
return Event{CtrlAltM, 0, nil}
case '/':
return Event{AltSlash, 0, nil}
case ' ':
return Event{AltSpace, 0, nil}
case 127, C.KEY_BACKSPACE:
return Event{AltBS, 0, nil}
case '[':
// Bracketed paste mode (printf "\e[?2004h")
// \e[200~ TEXT \e[201~
if consume('2', '0', '0', '~') {
return Event{Invalid, 0, nil}
}
}
if c >= 'a' && c <= 'z' {
return Event{AltA + int(c) - 'a', 0, nil}
}
if c >= '0' && c <= '9' {
return Event{Alt0 + int(c) - '0', 0, nil}
}
// Don't care. Ignore the rest.
for ; c != C.ERR; c = C.getch() {
}
return Event{Invalid, 0, nil}
}
func (r *FullscreenRenderer) GetChar() Event {
c := C.getch()
switch c {
case C.ERR:
// Unexpected error from blocking read
r.Close()
errorExit("Failed to read /dev/tty")
case C.KEY_UP:
return Event{Up, 0, nil}
case C.KEY_DOWN:
return Event{Down, 0, nil}
case C.KEY_LEFT:
return Event{Left, 0, nil}
case C.KEY_RIGHT:
return Event{Right, 0, nil}
case C.KEY_HOME:
return Event{Home, 0, nil}
case C.KEY_END:
return Event{End, 0, nil}
case C.KEY_BACKSPACE:
return Event{BSpace, 0, nil}
case C.KEY_F0 + 1:
return Event{F1, 0, nil}
case C.KEY_F0 + 2:
return Event{F2, 0, nil}
case C.KEY_F0 + 3:
return Event{F3, 0, nil}
case C.KEY_F0 + 4:
return Event{F4, 0, nil}
case C.KEY_F0 + 5:
return Event{F5, 0, nil}
case C.KEY_F0 + 6:
return Event{F6, 0, nil}
case C.KEY_F0 + 7:
return Event{F7, 0, nil}
case C.KEY_F0 + 8:
return Event{F8, 0, nil}
case C.KEY_F0 + 9:
return Event{F9, 0, nil}
case C.KEY_F0 + 10:
return Event{F10, 0, nil}
case C.KEY_F0 + 11:
return Event{F11, 0, nil}
case C.KEY_F0 + 12:
return Event{F12, 0, nil}
case C.KEY_DC:
return Event{Del, 0, nil}
case C.KEY_PPAGE:
return Event{PgUp, 0, nil}
case C.KEY_NPAGE:
return Event{PgDn, 0, nil}
case C.KEY_BTAB:
return Event{BTab, 0, nil}
case C.KEY_ENTER:
return Event{CtrlM, 0, nil}
case C.KEY_SLEFT:
return Event{SLeft, 0, nil}
case C.KEY_SRIGHT:
return Event{SRight, 0, nil}
case C.KEY_MOUSE:
var me C.MEVENT
if C.getmouse(&me) != C.ERR {
mod := ((me.bstate & C.BUTTON_SHIFT) | (me.bstate & C.BUTTON_CTRL) | (me.bstate & C.BUTTON_ALT)) > 0
x := int(me.x)
y := int(me.y)
/* Cannot use BUTTON1_DOUBLE_CLICKED due to mouseinterval(0) */
if (me.bstate & C.BUTTON1_PRESSED) > 0 {
now := time.Now()
if now.Sub(r.prevDownTime) < doubleClickDuration {
r.clickY = append(r.clickY, y)
} else {
r.clickY = []int{y}
r.prevDownTime = now
}
return Event{Mouse, 0, &MouseEvent{y, x, 0, true, false, mod}}
} else if (me.bstate & C.BUTTON1_RELEASED) > 0 {
double := false
if len(r.clickY) > 1 && r.clickY[0] == r.clickY[1] &&
time.Now().Sub(r.prevDownTime) < doubleClickDuration {
double = true
}
return Event{Mouse, 0, &MouseEvent{y, x, 0, false, double, mod}}
} else if (me.bstate&0x8000000) > 0 || (me.bstate&0x80) > 0 {
return Event{Mouse, 0, &MouseEvent{y, x, -1, false, false, mod}}
} else if (me.bstate & C.BUTTON4_PRESSED) > 0 {
return Event{Mouse, 0, &MouseEvent{y, x, 1, false, false, mod}}
}
}
return Event{Invalid, 0, nil}
case C.KEY_RESIZE:
return Event{Resize, 0, nil}
case ESC:
return escSequence()
case 127:
return Event{BSpace, 0, nil}
case 0:
return Event{CtrlSpace, 0, nil}
}
// CTRL-A ~ CTRL-Z
if c >= CtrlA && c <= CtrlZ {
return Event{int(c), 0, nil}
}
// Multi-byte character
buffer := []byte{byte(c)}
for {
r, _ := utf8.DecodeRune(buffer)
if r != utf8.RuneError {
return Event{Rune, r, nil}
}
c := C.getch()
if c == C.ERR {
break
}
if c >= C.KEY_CODE_YES {
C.ungetch(c)
break
}
buffer = append(buffer, byte(c))
}
return Event{Invalid, 0, nil}
}