private function drawSides()
{
if (isset($this->axis_valuetype[GRAPH_YAXIS_SIDE_RIGHT]) && ($this->yaxisright != 0 || $this->skipRightScale != 1)) {
$sides[] = GRAPH_YAXIS_SIDE_RIGHT;
}
if (isset($this->axis_valuetype[GRAPH_YAXIS_SIDE_LEFT]) && ($this->yaxisleft != 0 || $this->skipLeftScale != 1) || !isset($sides)) {
$sides[] = GRAPH_YAXIS_SIDE_LEFT;
}
foreach ($sides as $side) {
$minY = $this->m_minY[$side];
$maxY = $this->m_maxY[$side];
$units = null;
$unitsLong = null;
$byteStep = false;
for ($item = 0; $item < $this->num; $item++) {
if ($this->items[$item]['axisside'] == $side) {
// check if items use B or Bps units
if ($this->items[$item]['units'] == 'B' || $this->items[$item]['units'] == 'Bps') {
$byteStep = true;
}
if (is_null($units)) {
$units = $this->items[$item]['units'];
} elseif ($this->items[$item]['units'] != $units) {
$units = '';
}
}
}
if (is_null($units) || $units === false) {
$units = '';
} else {
for ($item = 0; $item < $this->num; $item++) {
if ($this->items[$item]['axisside'] == $side && !empty($this->items[$item]['unitsLong'])) {
$unitsLong = $this->items[$item]['unitsLong'];
break;
}
}
}
if (!empty($unitsLong)) {
$dims = imageTextSize(9, 90, $unitsLong);
$tmpY = $this->sizeY / 2 + $this->shiftY + $dims['height'] / 2;
if ($tmpY < $dims['height']) {
$tmpY = $dims['height'] + 6;
}
$tmpX = $side == GRAPH_YAXIS_SIDE_LEFT ? $dims['width'] + 8 : $this->fullSizeX - $dims['width'];
imageText($this->im, 9, 90, $tmpX, $tmpY, $this->getColor($this->graphtheme['textcolor'], 0), $unitsLong);
}
$step = $this->gridStep[$side];
$hstr_count = $this->gridLinesCount[$side];
// ignore milliseconds if -1 <= maxY => 1 or -1 <= minY => 1
$ignoreMillisec = bccomp($maxY, -1) <= 0 || bccomp($maxY, 1) >= 0 || bccomp($minY, -1) <= 0 || bccomp($minY, 1) >= 0;
$newPow = false;
if ($byteStep) {
$maxYPow = convertToBase1024($maxY, 1024);
$minYPow = convertToBase1024($minY, 1024);
$powStep = 1024;
} else {
$maxYPow = convertToBase1024($maxY);
$minYPow = convertToBase1024($minY);
$powStep = 1000;
}
if (abs($maxYPow['pow']) > abs($minYPow['pow']) && $maxYPow['value'] != 0) {
$newPow = $maxYPow['pow'];
if (abs(bcdiv($minYPow['value'], bcpow($powStep, $maxYPow['pow']))) > 1000) {
$newPow = $minYPow['pow'];
}
}
if (abs($maxYPow['pow']) < abs($minYPow['pow']) && $minYPow['value'] != 0) {
$newPow = $minYPow['pow'];
if (abs(bcdiv($maxYPow['value'], bcpow($powStep, $minYPow['pow']))) > 1000) {
$newPow = $maxYPow['pow'];
}
}
if ($maxYPow['pow'] == $minYPow['pow']) {
$newPow = $maxYPow['pow'];
}
$maxLength = false;
// get all values in y-axis if units != 's'
if ($units != 's') {
$calcValues = array();
for ($i = 0; $i <= $hstr_count; $i++) {
$hstr_count = $hstr_count == 0 ? 1 : $hstr_count;
$val = bcadd(bcmul($i, $step), $minY);
if (bccomp(bcadd($val, bcdiv($step, 2)), $maxY) == 1) {
continue;
}
$calcValues[] = convert_units(array('value' => $val, 'convert' => ITEM_CONVERT_NO_UNITS, 'byteStep' => $byteStep, 'pow' => $newPow));
}
$calcValues[] = convert_units(array('value' => $maxY, 'convert' => ITEM_CONVERT_NO_UNITS, 'byteStep' => $byteStep, 'pow' => $newPow));
$maxLength = calcMaxLengthAfterDot($calcValues);
}
for ($i = 0; $i <= $hstr_count; $i++) {
$hstr_count = $hstr_count == 0 ? 1 : $hstr_count;
$val = bcadd(bcmul($i, $step), $minY);
if (bccomp(bcadd($val, bcdiv($step, 2)), $maxY) == 1) {
continue;
}
$str = convert_units(array('value' => $val, 'units' => $units, 'convert' => ITEM_CONVERT_NO_UNITS, 'byteStep' => $byteStep, 'pow' => $newPow, 'ignoreMillisec' => $ignoreMillisec, 'length' => $maxLength));
if ($side == GRAPH_YAXIS_SIDE_LEFT) {
$dims = imageTextSize(8, 0, $str);
$posX = $this->shiftXleft - $dims['width'] - 9;
} else {
$posX = $this->sizeX + $this->shiftXleft + 12;
}
// marker Y coordinate
$posY = $this->sizeY + $this->shiftY - $this->gridStepX[$side] * $i + 4;
imageText($this->im, 8, 0, $posX, $posY, $this->getColor($this->graphtheme['textcolor'], 0), $str);
}
$str = convert_units(array('value' => $maxY, 'units' => $units, 'convert' => ITEM_CONVERT_NO_UNITS, 'byteStep' => $byteStep, 'pow' => $newPow, 'ignoreMillisec' => $ignoreMillisec, 'length' => $maxLength));
if ($side == GRAPH_YAXIS_SIDE_LEFT) {
$dims = imageTextSize(8, 0, $str);
$posX = $this->shiftXleft - $dims['width'] - 9;
$color = $this->getColor(GRAPH_ZERO_LINE_COLOR_LEFT);
} else {
$posX = $this->sizeX + $this->shiftXleft + 12;
$color = $this->getColor(GRAPH_ZERO_LINE_COLOR_RIGHT);
}
imageText($this->im, 8, 0, $posX, $this->shiftY + 4, $this->getColor($this->graphtheme['textcolor'], 0), $str);
if ($this->zero[$side] != $this->sizeY + $this->shiftY && $this->zero[$side] != $this->shiftY) {
zbx_imageline($this->im, $this->shiftXleft, $this->zero[$side], $this->shiftXleft + $this->sizeX, $this->zero[$side], $color);
}
}
}
/**
* Calculate interval for base 1024 values.
* Example:
* Convert 1000 to 1024
*
* @param $interval
* @param $minY
* @param $maxY
*
* @return float|int
*/
function getBase1024Interval($interval, $minY, $maxY)
{
$intervalData = convertToBase1024($interval);
$interval = $intervalData['value'];
if ($maxY > 0) {
$absMaxY = $maxY;
} else {
$absMaxY = bcmul($maxY, '-1');
}
if ($minY > 0) {
$absMinY = $minY;
} else {
$absMinY = bcmul($minY, '-1');
}
if ($absMaxY > $absMinY) {
$sideMaxData = convertToBase1024($maxY);
} else {
$sideMaxData = convertToBase1024($minY);
}
if ($sideMaxData['pow'] != $intervalData['pow']) {
// interval correction, if Max Y have other unit, then interval unit = Max Y unit
if ($intervalData['pow'] < 0) {
$interval = sprintf('%.10f', bcmul($interval, 1.024, 10));
} else {
$interval = sprintf('%.6f', round(bcmul($interval, 1.024), ZBX_UNITS_ROUNDOFF_UPPER_LIMIT));
}
}
return $interval;
}
