forked from JonasOberhauser/gocurses
/
curses.go
executable file
·477 lines (386 loc) · 8.85 KB
/
curses.go
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package gocurse
// #cgo LDFLAGS: -lncurses
// struct ldat{};
// struct _win_st{};
// #define _Bool int
// #define NCURSES_OPAQUE 1
// #include <curses.h>
import "C"
import (
"fmt"
"unsafe"
"errors"
)
var (
ErrorInit = errors.New("Cannot initialize")
ErrorWindowCreation = errors.New("Failed to create window")
ErrorTerminalColor = errors.New("terminal does not support color")
ErrorInitPair = errors.New("initializing color pair failed")
ErrorNoEcho = errors.New("noecho failed")
ErrorEcho = errors.New("echo failed")
ErrorSetCursor = errors.New("curs_set failed")
ErrorNocbreak = errors.New("Nocbreak failed")
ErrorCbreak = errors.New("Cbreak failed")
ErrorEndwin = errors.New("Endwin failed")
ErrorKeypad = errors.New("Keypad failed")
ErrorWinRefresh = errors.New("Window refresh failed")
ErrorWinDelete = errors.New("window deletion failed")
ErrorWindowMove = errors.New("window movement failed")
ErrorWindowSyncok = errors.New("window syncok failed")
Error = errors.New("Something went wrong, standard error")
)
// Cursor options.
const (
CURS_HIDE = iota;
CURS_NORM;
CURS_HIGH;
)
// Pointers to the values in curses, which may change values.
var Cols *int = nil;
var Rows *int = nil;
var Colors *int = nil;
var ColorPairs *int = nil;
var Tabsize *int = nil;
// Initializes gocurses
func init() {
Cols = (*int)(unsafe.Pointer(&C.COLS));
Rows = (*int)(unsafe.Pointer(&C.LINES));
Colors = (*int)(unsafe.Pointer(&C.COLORS));
ColorPairs = (*int)(unsafe.Pointer(&C.COLOR_PAIRS));
Tabsize = (*int)(unsafe.Pointer(&C.TABSIZE));
}
/*
====================================================
Helper Functions
====================================================
*/
func intToBool(i C.int) bool {
if i == 0 {
return false
}
return true
}
func boolToCint(b bool) C.int {
if b {
return C.TRUE
}
return C.FALSE
}
/*
====================================================
Color Setup Functions
====================================================
*/
func StartColor() error {
if C.has_colors() == 0 {
return ErrorTerminalColor
}
C.start_color();
return nil;
}
func SetColorPair(pair, fg, bg int) error {
if C.init_pair(C.short(pair), C.short(fg), C.short(bg)) == 0 {
return ErrorInitPair
}
return nil
}
func GetColorPair(pair int) int32 {
return int32(C.COLOR_PAIR(C.int(pair)));
}
/*
====================================================
Curses Setup Functions
====================================================
*/
func Noecho() error {
if int(C.noecho()) == 0 {
return ErrorNoEcho
}
return nil;
}
func Echo() error {
if int(C.echo()) == 0 {
return ErrorEcho
}
return nil;
}
func SetCursor(c int) error {
if C.curs_set(C.int(c)) == ERR {
return ErrorSetCursor
}
return nil
}
func Nocbreak() error {
if C.nocbreak() == ERR {
return ErrorNocbreak
}
return nil;
}
func Cbreak() error {
if C.cbreak() == ERR {
return ErrorCbreak
}
return nil;
}
func Getch() int {
return int(C.getch())
}
func Endwin() error {
if C.endwin() == ERR {
return ErrorEndwin
}
return nil;
}
func Raw() error {
if C.raw() == ERR {
return Error //Forkert ERROR
}
return nil;
}
func Halfdelay(delay int) error {
if C.halfdelay(C.int(delay)) == ERR {
return Error //Forkert ERROR
}
return nil
}
/*
====================================================
Type Window
====================================================
*/
type Window struct {
win *C.WINDOW
}
func Initscr() (*Window, error) {
win := C.initscr()
if win == nil {
return nil, ErrorInit
}
return &Window{win}, nil
}
func NewWindow(rows, cols, starty, startx int) (*Window, error) {
nw := C.newwin(C.int(rows), C.int(cols), C.int(starty), C.int(startx))
if nw == nil {
return nil, ErrorWindowCreation
}
return &Window{nw}, nil;
}
func (w *Window) Delwindow() error {
if C.delwin(w.win) == ERR {
return ErrorWinDelete
}
return nil
}
func (w *Window) Getch() int {
return int(C.wgetch(w.win))
}
func (w *Window) Getstr() (string, error) {
var buffer [1024]C.char
if C.wgetnstr(w.win, &buffer[0], 1024) == ERR {
return "", Error
}
s := C.GoString(&buffer[0])
return s, nil
}
func (w *Window) Timeout(delay int) {
C.wtimeout(w.win, C.int(delay))
}
func (w *Window) Nodelay(nodelay bool) {
if nodelay {
C.nodelay(w.win, 1)
} else {
C.nodelay(w.win, 0)
}
}
func (w *Window) Addch(x, y int, c int32, flags int32) {
C.mvwaddch(w.win, C.int(y), C.int(x), C.chtype(c) | C.chtype(flags));
}
// Since CGO currently can't handle varg C functions we'll mimic the
// ncurses addstr functions.
func (w *Window) Addstr(x, y int, str string, flags int32, v ...interface{}) {
newstr := fmt.Sprintf(str, v...);
w.MoveCursor(x, y);
for i := 0; i < len(newstr); i++ {
C.waddch(w.win, C.chtype(newstr[i]) | C.chtype(flags));
}
}
func (w *Window) Border(ls, rs, ts, bs, tl, tr, bl, br int) error {
if C.wborder(w.win, C.chtype(ls), C.chtype(rs),
C.chtype(ts), C.chtype(bs), C.chtype(tl), C.chtype(tr),
C.chtype(bl), C.chtype(br)) == ERR {
return Error
}
return nil
}
// Normally Y is the first parameter passed in curses.
func (w *Window) MoveCursor(x, y int) error {
if C.wmove(w.win, C.int(y), C.int(x)) == ERR {
return ErrorWindowMove
}
return nil
}
func DublicateWindow(w *Window) *Window {
return &Window{C.dupwin(w.win)}
}
//Flakey function according to ncurses DOC
func (w *Window) MoveDerwindow(x,y int) error {
if C.mvderwin(w.win, C.int(y), C.int(x)) == ERR {
return ErrorWindowMove
}
return nil
}
//Flakey function according to ncurses DOC
func (w *Window) Wsyncup() {
C.wsyncup(w.win)
}
//Flakey function according to ncurses DOC
func (w *Window) Syncok(bf bool) error {
var bfint int
if bf {
bfint++
}
if C.syncok(w.win, C.int(bfint)) == ERR {
return ErrorWindowSyncok
}
return nil
}
//Flakey function according to ncurses DOC
func (w *Window) Wcursyncup() {
C.wcursyncup(w.win)
}
//Flakey function according to ncurses DOC
func (w *Window) Wsyncdown() {
C.wsyncdown(w.win)
}
//Flakey function according to ncurses DOC
func (w *Window) SubWindow(rows, cols, starty, startx int) (*Window, error) {
sw := C.subwin(w.win, C.int(rows), C.int(cols), C.int(starty), C.int(startx))
if sw == nil {
return nil, ErrorWindowCreation
}
return &Window{sw}, nil
}
//Flakey function according to ncurses DOC
func (w *Window) Derwin(rows, cols, starty, startx int) (*Window, error) {
dw := C.derwin(w.win, C.int(rows), C.int(cols), C.int(starty), C.int(startx))
if dw == nil {
return nil, ErrorWindowCreation
}
return &Window{dw}, nil;
}
func (w *Window) Keypad(tf bool) error {
var outint int;
if tf {
outint++
}
if C.keypad(w.win, C.int(outint)) != OK {
return ErrorKeypad
}
return nil
}
func (w *Window) Refresh() error {
if C.wrefresh(w.win) == ERR {
return ErrorWinRefresh
}
return nil
}
func (w *Window) Redrawln(beg_line, num_lines int) {
C.wredrawln(w.win, C.int(beg_line), C.int(num_lines));
}
func (w *Window) Redraw() {
C.redrawwin(w.win);
}
func (w *Window) Clear() {
C.wclear(w.win);
}
func (w *Window) Erase() {
C.werase(w.win);
}
func (w *Window) Clrtobot() {
C.wclrtobot(w.win);
}
func (w *Window) Clrtoeol() {
C.wclrtoeol(w.win);
}
func (w *Window) Box(verch, horch int) {
C.box(w.win, C.chtype(verch), C.chtype(horch));
}
func (w *Window) Background(colour int32) {
C.wbkgd(w.win, C.chtype(colour));
}
//Attributes
func (w *Window) Attroff(attrs int) error {
if C.wattroff(w.win, C.int(attrs)) == ERR {
return Error
}
return nil
}
func (w *Window) Attron(attrs int) error {
if C.wattron(w.win, C.int(attrs)) == ERR {
return Error
}
return nil
}
func (w *Window) Attrset(attrs int) error {
if C.wattrset(w.win, C.int(attrs)) == ERR {
return Error
}
return nil
}
func (w *Window) Color_set(pair int) error {
if C.wcolor_set(w.win, C.short(pair), nil) == ERR {
return Error
}
return nil
}
func (w *Window) Standend() error {
if C.wstandend(w.win) == ERR {
return Error
}
return nil
}
func (w *Window) Standout() error {
if C.wstandout(w.win) == ERR {
return Error
}
return nil
}
func (w *Window) Attr_get() (int, int, error) {
var attr C.attr_t
var pair C.short
if C.wattr_get(w.win, &attr, &pair, nil) == ERR {
return 0,0, Error
}
return int(attr), int(pair), nil
}
func (w *Window) Chgat(n, attr, color int) error {
if C.wchgat(w.win, C.int(n), C.attr_t(attr), C.short(color), nil) == ERR {
return Error
}
return nil
}
func (w *Window) MoveChgat(x, y, n, attr, color int) error {
if C.mvwchgat(w.win, C.int(y), C.int(x), C.int(n), C.attr_t(attr), C.short(color), nil) == ERR {
return Error
}
return nil
}
//Window sizes - Undefined for some reason?
/*
func (w *Window) Getyx() (x int, y int) {
C.getyx(w.win, &y, &x)
return
}
func (w *Window) Getparyx() (x int, y int) {
C.getparyx(w.win, &y, &x)
return
}
func (w *Window) Getbegyx() (x int, y int) {
C.getbegyx(w.win, &y, &x)
return
}
func (w *Window) Getmaxyx() (x int, y int) {
C.getmaxyx(w.win, &y, &x)
return
}
*/