func updateBarsWin(msg currentBars, barsWin *gc.Window, colors colorsDefined, scale int64) {
whiteOnBlack := colors.whiteOnBlack
redOnBlack := colors.redOnBlack
greenOnBlack := colors.greenOnBlack
barsWin.Erase()
barsWin.Box(0, 0)
edibleCopy := make([]int64, len(msg.cols))
copy(edibleCopy, msg.cols)
barsHeight, barsWidth := barsWin.MaxYX()
startI := len(edibleCopy) - barsWidth
if startI < 0 {
startI = 0
}
currentSec := time.Now().Second()
prevSec := currentSec - 1
if prevSec < 0 {
prevSec = 59
}
for row := 0; row < barsHeight-2; row++ {
for col := range edibleCopy[startI:len(edibleCopy)] {
if edibleCopy[col]/scale > 0 {
turnOffColor := int16(0)
currChar := "="
// row is an int--32-bit, right?
if shouldShowFail(msg.failCols[col], scale, row) {
barsWin.ColorOff(whiteOnBlack)
barsWin.ColorOn(redOnBlack)
currChar = "x"
turnOffColor = redOnBlack
} else if col == currentSec ||
col == currentSec-1 {
// current second is still in progress, so make the previous second
// green too--not precisely correct, but close enough here
barsWin.ColorOff(whiteOnBlack)
barsWin.ColorOn(greenOnBlack)
turnOffColor = greenOnBlack
}
barsWin.MovePrint(barsHeight-2-row, col+1, currChar)
if turnOffColor != 0 {
barsWin.ColorOff(turnOffColor)
barsWin.ColorOn(whiteOnBlack)
}
edibleCopy[col] = edibleCopy[col] - scale
}
}
}
barsWin.NoutRefresh()
}
func updateMsgWin(msg ncursesMsg, msgWin *gc.Window, workerCountWin *gc.Window) {
var row int
if msg.msgType == MSG_TYPE_RESULT {
row = 1
} else if msg.msgType == MSG_TYPE_INFO {
row = 2
} else {
row = 3
}
msgWin.MovePrint(row, 1, fmt.Sprintf("%-40s", msg.msgStr))
msgWin.Box(0, 0)
msgWin.NoutRefresh()
if msg.currentCount >= 0 {
workerCountWin.MovePrint(1, 1, fmt.Sprintf("%5d", msg.currentCount))
workerCountWin.NoutRefresh()
}
}
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
}