App-RPi-EnvUI
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public/js/flot.js view on Meta::CPAN
axis.datamin = topSentry;
axis.datamax = bottomSentry;
axis.used = false;
});
for (i = 0; i < series.length; ++i) {
s = series[i];
s.datapoints = { points: [] };
executeHooks(hooks.processRawData, [ s, s.data, s.datapoints ]);
}
// first pass: clean and copy data
for (i = 0; i < series.length; ++i) {
s = series[i];
data = s.data;
format = s.datapoints.format;
if (!format) {
format = [];
// find out how to copy
format.push({ x: true, number: true, required: true });
format.push({ y: true, number: true, required: true });
if (s.bars.show || (s.lines.show && s.lines.fill)) {
var autoscale = !!((s.bars.show && s.bars.zero) || (s.lines.show && s.lines.zero));
format.push({ y: true, number: true, required: false, defaultValue: 0, autoscale: autoscale });
if (s.bars.horizontal) {
delete format[format.length - 1].y;
format[format.length - 1].x = true;
}
}
s.datapoints.format = format;
}
if (s.datapoints.pointsize != null)
continue; // already filled in
s.datapoints.pointsize = format.length;
ps = s.datapoints.pointsize;
points = s.datapoints.points;
var insertSteps = s.lines.show && s.lines.steps;
s.xaxis.used = s.yaxis.used = true;
for (j = k = 0; j < data.length; ++j, k += ps) {
p = data[j];
var nullify = p == null;
if (!nullify) {
for (m = 0; m < ps; ++m) {
val = p[m];
f = format[m];
if (f) {
if (f.number && val != null) {
val = +val; // convert to number
if (isNaN(val))
val = null;
else if (val == Infinity)
val = fakeInfinity;
else if (val == -Infinity)
val = -fakeInfinity;
}
if (val == null) {
if (f.required)
nullify = true;
if (f.defaultValue != null)
val = f.defaultValue;
}
}
points[k + m] = val;
}
}
if (nullify) {
for (m = 0; m < ps; ++m) {
val = points[k + m];
if (val != null) {
f = format[m];
// extract min/max info
if (f.autoscale !== false) {
if (f.x) {
updateAxis(s.xaxis, val, val);
}
if (f.y) {
updateAxis(s.yaxis, val, val);
}
}
}
points[k + m] = null;
}
}
else {
// a little bit of line specific stuff that
// perhaps shouldn't be here, but lacking
// better means...
if (insertSteps && k > 0
&& points[k - ps] != null
&& points[k - ps] != points[k]
&& points[k - ps + 1] != points[k + 1]) {
// copy the point to make room for a middle point
for (m = 0; m < ps; ++m)
points[k + ps + m] = points[k + m];
// middle point has same y
points[k + 1] = points[k - ps + 1];
// we've added a point, better reflect that
k += ps;
}
}
}
}
public/js/flot.js view on Meta::CPAN
var info = surface.getTextInfo(layer, t.label, font, null, maxWidth);
labelWidth = Math.max(labelWidth, info.width);
labelHeight = Math.max(labelHeight, info.height);
}
axis.labelWidth = opts.labelWidth || labelWidth;
axis.labelHeight = opts.labelHeight || labelHeight;
}
function allocateAxisBoxFirstPhase(axis) {
// find the bounding box of the axis by looking at label
// widths/heights and ticks, make room by diminishing the
// plotOffset; this first phase only looks at one
// dimension per axis, the other dimension depends on the
// other axes so will have to wait
var lw = axis.labelWidth,
lh = axis.labelHeight,
pos = axis.options.position,
isXAxis = axis.direction === "x",
tickLength = axis.options.tickLength,
axisMargin = options.grid.axisMargin,
padding = options.grid.labelMargin,
innermost = true,
outermost = true,
first = true,
found = false;
// Determine the axis's position in its direction and on its side
$.each(isXAxis ? xaxes : yaxes, function(i, a) {
if (a && (a.show || a.reserveSpace)) {
if (a === axis) {
found = true;
} else if (a.options.position === pos) {
if (found) {
outermost = false;
} else {
innermost = false;
}
}
if (!found) {
first = false;
}
}
});
// The outermost axis on each side has no margin
if (outermost) {
axisMargin = 0;
}
// The ticks for the first axis in each direction stretch across
if (tickLength == null) {
tickLength = first ? "full" : 5;
}
if (!isNaN(+tickLength))
padding += +tickLength;
if (isXAxis) {
lh += padding;
if (pos == "bottom") {
plotOffset.bottom += lh + axisMargin;
axis.box = { top: surface.height - plotOffset.bottom, height: lh };
}
else {
axis.box = { top: plotOffset.top + axisMargin, height: lh };
plotOffset.top += lh + axisMargin;
}
}
else {
lw += padding;
if (pos == "left") {
axis.box = { left: plotOffset.left + axisMargin, width: lw };
plotOffset.left += lw + axisMargin;
}
else {
plotOffset.right += lw + axisMargin;
axis.box = { left: surface.width - plotOffset.right, width: lw };
}
}
// save for future reference
axis.position = pos;
axis.tickLength = tickLength;
axis.box.padding = padding;
axis.innermost = innermost;
}
function allocateAxisBoxSecondPhase(axis) {
// now that all axis boxes have been placed in one
// dimension, we can set the remaining dimension coordinates
if (axis.direction == "x") {
axis.box.left = plotOffset.left - axis.labelWidth / 2;
axis.box.width = surface.width - plotOffset.left - plotOffset.right + axis.labelWidth;
}
else {
axis.box.top = plotOffset.top - axis.labelHeight / 2;
axis.box.height = surface.height - plotOffset.bottom - plotOffset.top + axis.labelHeight;
}
}
function adjustLayoutForThingsStickingOut() {
// possibly adjust plot offset to ensure everything stays
// inside the canvas and isn't clipped off
var minMargin = options.grid.minBorderMargin,
axis, i;
// check stuff from the plot (FIXME: this should just read
// a value from the series, otherwise it's impossible to
// customize)
if (minMargin == null) {
minMargin = 0;
for (i = 0; i < series.length; ++i)
public/js/flot.js view on Meta::CPAN
noTicks = opts.ticks;
else
// heuristic based on the model a*sqrt(x) fitted to
// some data points that seemed reasonable
noTicks = 0.3 * Math.sqrt(axis.direction == "x" ? surface.width : surface.height);
var delta = (axis.max - axis.min) / noTicks,
dec = -Math.floor(Math.log(delta) / Math.LN10),
maxDec = opts.tickDecimals;
if (maxDec != null && dec > maxDec) {
dec = maxDec;
}
var magn = Math.pow(10, -dec),
norm = delta / magn, // norm is between 1.0 and 10.0
size;
if (norm < 1.5) {
size = 1;
} else if (norm < 3) {
size = 2;
// special case for 2.5, requires an extra decimal
if (norm > 2.25 && (maxDec == null || dec + 1 <= maxDec)) {
size = 2.5;
++dec;
}
} else if (norm < 7.5) {
size = 5;
} else {
size = 10;
}
size *= magn;
if (opts.minTickSize != null && size < opts.minTickSize) {
size = opts.minTickSize;
}
axis.delta = delta;
axis.tickDecimals = Math.max(0, maxDec != null ? maxDec : dec);
axis.tickSize = opts.tickSize || size;
// Time mode was moved to a plug-in in 0.8, and since so many people use it
// we'll add an especially friendly reminder to make sure they included it.
if (opts.mode == "time" && !axis.tickGenerator) {
throw new Error("Time mode requires the flot.time plugin.");
}
// Flot supports base-10 axes; any other mode else is handled by a plug-in,
// like flot.time.js.
if (!axis.tickGenerator) {
axis.tickGenerator = function (axis) {
var ticks = [],
start = floorInBase(axis.min, axis.tickSize),
i = 0,
v = Number.NaN,
prev;
do {
prev = v;
v = start + i * axis.tickSize;
ticks.push(v);
++i;
} while (v < axis.max && v != prev);
return ticks;
};
axis.tickFormatter = function (value, axis) {
var factor = axis.tickDecimals ? Math.pow(10, axis.tickDecimals) : 1;
var formatted = "" + Math.round(value * factor) / factor;
// If tickDecimals was specified, ensure that we have exactly that
// much precision; otherwise default to the value's own precision.
if (axis.tickDecimals != null) {
var decimal = formatted.indexOf(".");
var precision = decimal == -1 ? 0 : formatted.length - decimal - 1;
if (precision < axis.tickDecimals) {
return (precision ? formatted : formatted + ".") + ("" + factor).substr(1, axis.tickDecimals - precision);
}
}
return formatted;
};
}
if ($.isFunction(opts.tickFormatter))
axis.tickFormatter = function (v, axis) { return "" + opts.tickFormatter(v, axis); };
if (opts.alignTicksWithAxis != null) {
var otherAxis = (axis.direction == "x" ? xaxes : yaxes)[opts.alignTicksWithAxis - 1];
if (otherAxis && otherAxis.used && otherAxis != axis) {
// consider snapping min/max to outermost nice ticks
var niceTicks = axis.tickGenerator(axis);
if (niceTicks.length > 0) {
if (opts.min == null)
axis.min = Math.min(axis.min, niceTicks[0]);
if (opts.max == null && niceTicks.length > 1)
axis.max = Math.max(axis.max, niceTicks[niceTicks.length - 1]);
}
axis.tickGenerator = function (axis) {
// copy ticks, scaled to this axis
var ticks = [], v, i;
for (i = 0; i < otherAxis.ticks.length; ++i) {
v = (otherAxis.ticks[i].v - otherAxis.min) / (otherAxis.max - otherAxis.min);
v = axis.min + v * (axis.max - axis.min);
ticks.push(v);
}
return ticks;
};
// we might need an extra decimal since forced
// ticks don't necessarily fit naturally
if (!axis.mode && opts.tickDecimals == null) {
var extraDec = Math.max(0, -Math.floor(Math.log(axis.delta) / Math.LN10) + 1),
ts = axis.tickGenerator(axis);
// only proceed if the tick interval rounded
// with an extra decimal doesn't give us a
// zero at end
if (!(ts.length > 1 && /\..*0$/.test((ts[1] - ts[0]).toFixed(extraDec))))
axis.tickDecimals = extraDec;
}
}
}
}
function setTicks(axis) {
var oticks = axis.options.ticks, ticks = [];
if (oticks == null || (typeof oticks == "number" && oticks > 0))
ticks = axis.tickGenerator(axis);
else if (oticks) {
if ($.isFunction(oticks))
// generate the ticks
ticks = oticks(axis);
else
ticks = oticks;
}
// clean up/labelify the supplied ticks, copy them over
var i, v;
axis.ticks = [];
for (i = 0; i < ticks.length; ++i) {
var label = null;
var t = ticks[i];
if (typeof t == "object") {
v = +t[0];
if (t.length > 1)
label = t[1];
}
else
v = +t;
if (label == null)
label = axis.tickFormatter(v, axis);
if (!isNaN(v))
axis.ticks.push({ v: v, label: label });
}
}
function snapRangeToTicks(axis, ticks) {
if (axis.options.autoscaleMargin && ticks.length > 0) {
// snap to ticks
if (axis.options.min == null)
axis.min = Math.min(axis.min, ticks[0].v);
if (axis.options.max == null && ticks.length > 1)
axis.max = Math.max(axis.max, ticks[ticks.length - 1].v);
}
}
function draw() {
surface.clear();
executeHooks(hooks.drawBackground, [ctx]);
var grid = options.grid;
// draw background, if any
if (grid.show && grid.backgroundColor)
drawBackground();
if (grid.show && !grid.aboveData) {
drawGrid();
}
for (var i = 0; i < series.length; ++i) {
executeHooks(hooks.drawSeries, [ctx, series[i]]);
drawSeries(series[i]);
}
executeHooks(hooks.draw, [ctx]);
if (grid.show && grid.aboveData) {
drawGrid();
}
surface.render();
// A draw implies that either the axes or data have changed, so we
// should probably update the overlay highlights as well.
triggerRedrawOverlay();
}
function extractRange(ranges, coord) {
var axis, from, to, key, axes = allAxes();
for (var i = 0; i < axes.length; ++i) {
axis = axes[i];
if (axis.direction == coord) {
key = coord + axis.n + "axis";
if (!ranges[key] && axis.n == 1)
key = coord + "axis"; // support x1axis as xaxis
if (ranges[key]) {
from = ranges[key].from;
public/js/flot.js view on Meta::CPAN
axes = allAxes();
bw = options.grid.borderWidth;
for (var j = 0; j < axes.length; ++j) {
var axis = axes[j], box = axis.box,
t = axis.tickLength, x, y, xoff, yoff;
if (!axis.show || axis.ticks.length == 0)
continue;
ctx.lineWidth = 1;
// find the edges
if (axis.direction == "x") {
x = 0;
if (t == "full")
y = (axis.position == "top" ? 0 : plotHeight);
else
y = box.top - plotOffset.top + (axis.position == "top" ? box.height : 0);
}
else {
y = 0;
if (t == "full")
x = (axis.position == "left" ? 0 : plotWidth);
else
x = box.left - plotOffset.left + (axis.position == "left" ? box.width : 0);
}
// draw tick bar
if (!axis.innermost) {
ctx.strokeStyle = axis.options.color;
ctx.beginPath();
xoff = yoff = 0;
if (axis.direction == "x")
xoff = plotWidth + 1;
else
yoff = plotHeight + 1;
if (ctx.lineWidth == 1) {
if (axis.direction == "x") {
y = Math.floor(y) + 0.5;
} else {
x = Math.floor(x) + 0.5;
}
}
ctx.moveTo(x, y);
ctx.lineTo(x + xoff, y + yoff);
ctx.stroke();
}
// draw ticks
ctx.strokeStyle = axis.options.tickColor;
ctx.beginPath();
for (i = 0; i < axis.ticks.length; ++i) {
var v = axis.ticks[i].v;
xoff = yoff = 0;
if (isNaN(v) || v < axis.min || v > axis.max
// skip those lying on the axes if we got a border
|| (t == "full"
&& ((typeof bw == "object" && bw[axis.position] > 0) || bw > 0)
&& (v == axis.min || v == axis.max)))
continue;
if (axis.direction == "x") {
x = axis.p2c(v);
yoff = t == "full" ? -plotHeight : t;
if (axis.position == "top")
yoff = -yoff;
}
else {
y = axis.p2c(v);
xoff = t == "full" ? -plotWidth : t;
if (axis.position == "left")
xoff = -xoff;
}
if (ctx.lineWidth == 1) {
if (axis.direction == "x")
x = Math.floor(x) + 0.5;
else
y = Math.floor(y) + 0.5;
}
ctx.moveTo(x, y);
ctx.lineTo(x + xoff, y + yoff);
}
ctx.stroke();
}
// draw border
if (bw) {
// If either borderWidth or borderColor is an object, then draw the border
// line by line instead of as one rectangle
bc = options.grid.borderColor;
if(typeof bw == "object" || typeof bc == "object") {
if (typeof bw !== "object") {
bw = {top: bw, right: bw, bottom: bw, left: bw};
}
if (typeof bc !== "object") {
bc = {top: bc, right: bc, bottom: bc, left: bc};
}
if (bw.top > 0) {
ctx.strokeStyle = bc.top;
ctx.lineWidth = bw.top;
ctx.beginPath();
ctx.moveTo(0 - bw.left, 0 - bw.top/2);
ctx.lineTo(plotWidth, 0 - bw.top/2);
ctx.stroke();
}
if (bw.right > 0) {
ctx.strokeStyle = bc.right;
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