func drawDisplay(
stdscr *gc.Window,
) (
msgWin *gc.Window,
workerCountWin *gc.Window,
durWin *gc.Window,
reqSecWin *gc.Window,
barsWin *gc.Window,
scaleWin *gc.Window,
maxWin *gc.Window,
) {
// print startup message
stdscr.Print("Press 'q' to exit")
stdscr.NoutRefresh()
// Create message window
// and enable the use of the
// keypad on it so the arrow keys are available
msgHeight, msgWidth := 5, 40
msgY, msgX := 1, 0
msgWin = createWindow(msgHeight, msgWidth, msgY, msgX)
msgWin.Keypad(true)
msgWin.Box(0, 0)
msgWin.NoutRefresh()
// Create the counter window, showing how many goroutines are active
ctrHeight, ctrWidth := 3, 7
ctrY := 2
ctrX := msgWidth + 1
stdscr.MovePrint(1, ctrX+1, "thrds")
stdscr.NoutRefresh()
workerCountWin = createWindow(ctrHeight, ctrWidth, ctrY, ctrX)
workerCountWin.Box(0, 0)
workerCountWin.NoutRefresh()
// Create the avg duration window, showing 5 second moving average
durHeight, durWidth := 4, 14
durY := 2
durX := ctrX + ctrWidth + 1
stdscr.MovePrint(1, durX+1, "duration ms")
stdscr.NoutRefresh()
durWin = createWindow(durHeight, durWidth, durY, durX)
durWin.Box(0, 0)
durWin.NoutRefresh()
// Create the requests/sec window,
reqSecHeight, reqSecWidth := 3, 16
reqSecY := 2
reqSecX := durX + durWidth + 1
stdscr.MovePrint(1, reqSecX+1, "req/s 1/5/60")
stdscr.NoutRefresh()
reqSecWin = createWindow(reqSecHeight, reqSecWidth, reqSecY, reqSecX)
reqSecWin.Box(0, 0)
reqSecWin.NoutRefresh()
// Create the bars window, showing the moving display of bars
secondsPerMinute := 60
barsWidth := secondsPerMinute + 3 // we wrap after a minute
barsHeight := 25 // need to size this dynamically, TBD
barsY := msgHeight + 1
barsX := 9 // leave space for scale window
barsWin = createWindow(barsHeight, barsWidth, barsY, barsX)
barsWin.Box(0, 0)
barsWin.NoutRefresh()
// Max window, showing the max seen over the last 60 seconds
maxWidth := 7
maxHeight := 3
maxY := barsY + barsHeight - 8
maxX := 1
stdscr.MovePrint(maxY, 1, "max:")
stdscr.NoutRefresh()
maxY += 1
maxWin = createWindow(maxHeight, maxWidth, maxY, maxX)
maxWin.Box(0, 0)
maxWin.NoutRefresh()
// Scale window, showing our current scaling factor for the bars display
scaleWidth := 7
scaleHeight := 3
scaleY := barsY + barsHeight - 4
scaleX := 1
stdscr.MovePrint(scaleY, 1, "scale:")
stdscr.NoutRefresh()
scaleY += 1
scaleWin = createWindow(scaleHeight, scaleWidth, scaleY, scaleX)
scaleWin.Box(0, 0)
scaleWin.MovePrint(1, 1, fmt.Sprintf("%5s", "1"))
scaleWin.NoutRefresh()
// Update will flush only the characters which have changed between the
// physical screen and the virtual screen, minimizing the number of
// characters which must be sent
gc.Update()
return
}
func (cw *chatWin) handleInput(win *goncurses.Window) (line string) {
k := win.GetChar()
if k == 0 {
return ""
}
// some systems send a DEL ASCII character instead of KEY_BACKSPACE
// account for both just in case
if k == 127 {
k = goncurses.KEY_BACKSPACE
}
switch k {
case goncurses.KEY_TAB: // tab
// case goncurses.KEY_RETURN: // enter key vs. KEY_ENTER
case goncurses.KEY_DOWN: // down arrow key
case goncurses.KEY_UP: // up arrow key
case goncurses.KEY_LEFT: // left arrow key
case goncurses.KEY_RIGHT: // right arrow key
case goncurses.KEY_HOME: // home key
case goncurses.KEY_BACKSPACE: // backpace
if len(cw.line) > 0 {
cw.line = cw.line[:len(cw.line)-1]
}
y, x := win.CursorYX()
// TODO: handle this more elegantly (e.g. tell ncurses not to print backspaces)
// we have to do this three times because ncurses inserts two characters for backspace
// this is likely wrong in some cases
for i := 0; i < 3; i++ {
y, x = cw.moveLeft(y, x)
win.MoveDelChar(y, x)
}
win.Refresh()
case goncurses.KEY_F1: // F1 key
case goncurses.KEY_F2: // F2 key
case goncurses.KEY_F3: // F3 key
case goncurses.KEY_F4: // F4 key
case goncurses.KEY_F5: // F5 key
case goncurses.KEY_F6: // F6 key
case goncurses.KEY_F7: // F7 key
case goncurses.KEY_F8: // F8 key
case goncurses.KEY_F9: // F9 key
case goncurses.KEY_F10: // F10 key
case goncurses.KEY_F11: // F11 key
case goncurses.KEY_F12: // F12 key
case goncurses.KEY_DL: // delete-line key
case goncurses.KEY_IL: // insert-line key
case goncurses.KEY_DC: // delete-character key
case goncurses.KEY_IC: // insert-character key
case goncurses.KEY_EIC: // sent by rmir or smir in insert mode
case goncurses.KEY_CLEAR: // clear-screen or erase key3
case goncurses.KEY_EOS: // clear-to-end-of-screen key
case goncurses.KEY_EOL: // clear-to-end-of-line key
case goncurses.KEY_SF: // scroll-forward key
case goncurses.KEY_SR: // scroll-backward key
case goncurses.KEY_PAGEDOWN: // page-down key (next-page)
case goncurses.KEY_PAGEUP: // page-up key (prev-page)
case goncurses.KEY_STAB: // set-tab key
case goncurses.KEY_CTAB: // clear-tab key
case goncurses.KEY_CATAB: // clear-all-tabs key
case goncurses.KEY_RETURN: // enter key vs. KEY_ENTER
fallthrough
case goncurses.KEY_ENTER: // enter/send key
line = cw.line
cw.line = ""
win.Erase()
win.Print(PROMPT)
case goncurses.KEY_PRINT: // print key
case goncurses.KEY_LL: // lower-left key (home down)
case goncurses.KEY_A1: // upper left of keypad
case goncurses.KEY_A3: // upper right of keypad
case goncurses.KEY_B2: // center of keypad
case goncurses.KEY_C1: // lower left of keypad
case goncurses.KEY_C3: // lower right of keypad
case goncurses.KEY_BTAB: // back-tab key
case goncurses.KEY_BEG: // begin key
case goncurses.KEY_CANCEL: // cancel key
case goncurses.KEY_CLOSE: // close key
case goncurses.KEY_COMMAND: // command key
case goncurses.KEY_COPY: // copy key
case goncurses.KEY_CREATE: // create key
case goncurses.KEY_END: // end key
case goncurses.KEY_EXIT: // exit key
case goncurses.KEY_FIND: // find key
case goncurses.KEY_HELP: // help key
case goncurses.KEY_MARK: // mark key
case goncurses.KEY_MESSAGE: // message key
case goncurses.KEY_MOVE: // move key
case goncurses.KEY_NEXT: // next key
case goncurses.KEY_OPEN: // open key
case goncurses.KEY_OPTIONS: // options key
case goncurses.KEY_PREVIOUS: // previous key
case goncurses.KEY_REDO: // redo key
case goncurses.KEY_REFERENCE: // reference key
case goncurses.KEY_REFRESH: // refresh key
case goncurses.KEY_REPLACE: // replace key
case goncurses.KEY_RESTART: // restart key
case goncurses.KEY_RESUME: // resume key
case goncurses.KEY_SAVE: // save key
case goncurses.KEY_SBEG: // shifted begin key
case goncurses.KEY_SCANCEL: // shifted cancel key
case goncurses.KEY_SCOMMAND: // shifted command key
case goncurses.KEY_SCOPY: // shifted copy key
case goncurses.KEY_SCREATE: // shifted create key
case goncurses.KEY_SDC: // shifted delete-character key
case goncurses.KEY_SDL: // shifted delete-line key
case goncurses.KEY_SELECT: // select key
case goncurses.KEY_SEND: // shifted end key
case goncurses.KEY_SEOL: // shifted clear-to-end-of-line key
case goncurses.KEY_SEXIT: // shifted exit key
case goncurses.KEY_SFIND: // shifted find key
case goncurses.KEY_SHELP: // shifted help key
case goncurses.KEY_SHOME: // shifted home key
case goncurses.KEY_SIC: // shifted insert-character key
case goncurses.KEY_SLEFT: // shifted left-arrow key
case goncurses.KEY_SMESSAGE: // shifted message key
case goncurses.KEY_SMOVE: // shifted move key
case goncurses.KEY_SNEXT: // shifted next key
case goncurses.KEY_SOPTIONS: // shifted options key
case goncurses.KEY_SPREVIOUS: // shifted previous key
case goncurses.KEY_SPRINT: // shifted print key
case goncurses.KEY_SREDO: // shifted redo key
case goncurses.KEY_SREPLACE: // shifted replace key
case goncurses.KEY_SRIGHT: // shifted right-arrow key
case goncurses.KEY_SRSUME: // shifted resume key
case goncurses.KEY_SSAVE: // shifted save key
case goncurses.KEY_SSUSPEND: // shifted suspend key
case goncurses.KEY_SUNDO: // shifted undo key
case goncurses.KEY_SUSPEND: // suspend key
case goncurses.KEY_UNDO: // undo key
case goncurses.KEY_MOUSE: // any mouse event
case goncurses.KEY_RESIZE: // Terminal resize event
//case goncurses.KEY_EVENT: // We were interrupted by an event
case goncurses.KEY_MAX:
default:
cw.line += goncurses.KeyString(k)
}
return
}