diff --git a/src/jquery.flot.js b/src/jquery.flot.js
index f3f9023..c6c8c56 100644
--- a/src/jquery.flot.js
+++ b/src/jquery.flot.js
@@ -36,7 +36,6 @@ Licensed under the MIT license.
.appendTo(container);
// If HTML5 Canvas isn't available, fall back to [Ex|Flash]canvas
-
if (!element.getContext) {
if (window.G_vmlCanvasManager) {
element = window.G_vmlCanvasManager.initElement(element);
@@ -57,7 +56,6 @@ Licensed under the MIT license.
// The iPhone 4, for example, has a device-independent width of 320px,
// but its screen is actually 640px wide. It therefore has a pixel
// ratio of 2, while most normal devices have a ratio of 1.
-
devicePixelRatio = window.devicePixelRatio || 1,
backingStoreRatio =
context.webkitBackingStorePixelRatio ||
@@ -69,17 +67,14 @@ Licensed under the MIT license.
this.pixelRatio = devicePixelRatio / backingStoreRatio;
// Size the canvas to match the internal dimensions of its container
-
this.resize(container.width(), container.height());
// Collection of HTML div layers for text overlaid onto the canvas
-
this.textContainer = null;
this.text = {};
// Cache of text fragments and metrics, so we can avoid expensively
// re-calculating them when the plot is re-rendered in a loop.
-
this._textCache = {};
}
@@ -105,7 +100,6 @@ Licensed under the MIT license.
// displays have that many more pixels in the same advertised space.
// Resizing should reset the state (excanvas seems to be buggy though)
-
if (this.width !== width) {
element.width = width * pixelRatio;
element.style.width = width + "px";
@@ -121,7 +115,6 @@ Licensed under the MIT license.
// Save the context, so we can reset in case we get replotted. The
// restore ensure that we're really back at the initial state, and
// should be safe even if we haven't saved the initial state yet.
-
context.restore();
context.save();
@@ -148,7 +141,6 @@ Licensed under the MIT license.
// For each text layer, add elements marked as active that haven't
// already been rendered, and remove those that are no longer active.
-
for (var layerKey in cache) {
if (Object.prototype.hasOwnProperty.call(cache, layerKey)) {
@@ -209,11 +201,9 @@ Licensed under the MIT license.
var layer = this.text[classes];
// Create the text layer if it doesn't exist
-
if (layer == null) {
// Create the text layer container, if it doesn't exist
-
if (this.textContainer == null) {
this.textContainer = $("")
.css({
@@ -287,11 +277,13 @@ Licensed under the MIT license.
var textStyle, layerCache, styleCache, angleCache, info;
- text = "" + text; // Cast to string in case we have a number or such
- angle = (360 + (angle || 0)) % 360; // Normalize the angle to 0...359
+ // Cast to string in case we have a number or such
+ text = "" + text;
- // If the font is a font-spec object, generate a CSS font definition
+ // Normalize the angle to 0...359
+ angle = (360 + (angle || 0)) % 360;
+ // If the font is a font-spec object, generate a CSS font definition
if (typeof font === "object") {
textStyle = font.style + " " + font.variant + " " + font.weight + " " + font.size + "px/" + font.lineHeight + "px " + font.family;
} else {
@@ -299,7 +291,6 @@ Licensed under the MIT license.
}
// Retrieve or create the caches for the text's layer, style, and angle
-
layerCache = this._textCache[layer];
if (layerCache == null) {
layerCache = this._textCache[layer] = {};
@@ -318,7 +309,6 @@ Licensed under the MIT license.
info = angleCache[text];
// If we can't find a matching element in our cache, create a new one
-
if (info == null) {
var element = $("").html(text)
@@ -340,7 +330,6 @@ Licensed under the MIT license.
// Save the original dimensions of the text; we'll modify these
// later to take into account rotation, if there is any.
-
var textWidth = element.outerWidth(true),
textHeight = element.outerHeight(true);
@@ -350,15 +339,18 @@ Licensed under the MIT license.
// the way most browsers resize the div on rotate, which may cause
// the contents to wrap differently. The extra +1 is because IE
// rounds the width differently and needs a little extra help.
-
if (angle) {
var radians = angle * Math.PI / 180,
sin = Math.sin(radians),
cos = Math.cos(radians),
- a = cos.toFixed(6), // Use fixed-point so these don't
- b = (-sin).toFixed(6), // show up in scientific notation
- c = sin.toFixed(6), // when we add them to the string
+
+ // Use fixed-point so these don't show up in scientific
+ // notation when we add them to the string
+ a = cos.toFixed(6),
+ b = (-sin).toFixed(6),
+ c = sin.toFixed(6),
+
transformRule;
// Detect IE7/8 to use microsofts proprietary matrix filter
@@ -370,7 +362,6 @@ Licensed under the MIT license.
// blurry text on some browsers (Chrome) when the width or
// height happens to be odd, making 50% fractional. Avoid
// this by setting the origin to rounded values.
-
var cx = textWidth / 2,
cy = textHeight / 2,
transformOrigin = Math.floor(cx) + "px " + Math.floor(cy) + "px",
@@ -387,7 +378,6 @@ Licensed under the MIT license.
// the top-left quadrant; we can then use the x-coordinate
// of the first (left-most) point and the y-coordinate of
// the second (top-most) point as the bounding box corner.
-
x, y;
if (angle < 90) {
@@ -430,7 +420,6 @@ Licensed under the MIT license.
// TODO: Instead of white use the actual background color?
// This still wouldn't solve the problem when the plot has
// a gradient background, but it would at least help.
-
transformRule = "progid:DXImageTransform.Microsoft.Matrix(M11=" + a + ", M12=" + b + ", M21=" + c + ", M22=" + a + ",sizingMethod='auto expand')";
element.css({
@@ -442,7 +431,6 @@ Licensed under the MIT license.
}
// Compute the final dimensions of the text's bounding box
-
var ac = Math.abs(cos),
as = Math.abs(sin),
originalWidth = textWidth;
@@ -489,7 +477,6 @@ Licensed under the MIT license.
positions = info.positions;
// Tweak the div's position to match the text's alignment
-
if (halign === "center") {
x -= info.width / 2;
} else if (halign === "right") {
@@ -504,7 +491,6 @@ Licensed under the MIT license.
// Determine whether this text already exists at this position.
// If so, mark it for inclusion in the next render pass.
-
for (var i = 0, position; position = positions[i]; i++) {
if (position.x === x && position.y === y) {
position.active = true;
@@ -516,7 +502,6 @@ Licensed under the MIT license.
// For the very first position we'll re-use the original element,
// while for subsequent ones we'll clone it.
-
position = {
active: true,
rendered: false,
@@ -528,11 +513,13 @@ Licensed under the MIT license.
positions.push(position);
// Move the element to its final position within the container
-
position.element.css({
top: Math.round(y),
left: Math.round(x),
- "text-align": halign // In case the text wraps
+
+ // In case the text wraps
+
+ "text-align": halign
});
};
@@ -595,65 +582,129 @@ Licensed under the MIT license.
* The top-level container for the entire plot.
*/
function Plot(placeholder, data_, options_, plugins) {
+
// data is on the form:
// [ series1, series2 ... ]
// where series is either just the data as [ [x1, y1], [x2, y2], ... ]
// or { data: [ [x1, y1], [x2, y2], ... ], label: "some label", ... }
-
var series = [],
options = {
+
// the color theme used for graphs
colors: ["#edc240", "#afd8f8", "#cb4b4b", "#4da74d", "#9440ed"],
legend: {
show: true,
- noColumns: 1, // number of colums in legend table
- labelFormatter: null, // fn: string -> string
- labelBoxBorderColor: "#ccc", // border color for the little label boxes
- container: null, // container (as jQuery object) to put legend in, null means default on top of graph
- position: "ne", // position of default legend container within plot
- margin: 5, // distance from grid edge to default legend container within plot
- backgroundColor: null, // null means auto-detect
- backgroundOpacity: 0.85, // set to 0 to avoid background
- sorted: null // default to no legend sorting
+
+ // number of colums in legend table
+ noColumns: 1,
+
+ // fn: string -> string
+ labelFormatter: null,
+
+ // border color for the little label boxes
+ labelBoxBorderColor: "#ccc",
+
+ // container (as jQuery object) to put legend in, null means default on top of graph
+ container: null,
+
+ // position of default legend container within plot
+ position: "ne",
+
+ // distance from grid edge to default legend container within plot
+ margin: 5,
+
+ // null means auto-detect
+ backgroundColor: null,
+
+ // set to 0 to avoid background
+ backgroundOpacity: 0.85,
+
+ // default to no legend sorting
+ sorted: null
},
xaxis: {
- show: null, // null = auto-detect, true = always, false = never
- position: "bottom", // or "top"
- mode: null, // null or "time"
+ // null = auto-detect, true = always, false = never
+
+ show: null,
+
+ // or "top"
+ position: "bottom",
+
+ // null or "time"
+ mode: null,
+
+ // base color, labels, ticks
+ color: null,
+
+ // null (derived from CSS in placeholder) or
+ // object like { size: 11, lineHeight: 13, style: "italic", weight: "bold", family: "sans-serif", variant: "small-caps" }
+ font: null,
+
+ // min. value to show, null means set automatically
+ min: null,
+
+ // max. value to show, null means set automatically
+ max: null,
+
+ // margin in % to add if auto-setting min/max
+ autoscaleMargin: null,
+
+ // null or f: number -> number to transform axis
+ transform: null,
+
+ // if transform is set, this should be the inverse function
+ inverseTransform: null,
+
+ // either [1, 3] or [[1, "a"], 3] or (fn: axis info -> ticks) or app. number of ticks for auto-ticks
+ ticks: null,
+
+ // number or [number, "unit"]
+ tickSize: null,
- color: null, // base color, labels, ticks
- font: null, // null (derived from CSS in placeholder) or object like { size: 11, lineHeight: 13, style: "italic", weight: "bold", family: "sans-serif", variant: "small-caps" }
+ // number or [number, "unit"]
+ minTickSize: null,
- min: null, // min. value to show, null means set automatically
- max: null, // max. value to show, null means set automatically
- autoscaleMargin: null, // margin in % to add if auto-setting min/max
+ // fn: number -> string
+ tickFormatter: null,
- transform: null, // null or f: number -> number to transform axis
- inverseTransform: null, // if transform is set, this should be the inverse function
+ // no. of decimals, null means auto
+ tickDecimals: null,
- ticks: null, // either [1, 3] or [[1, "a"], 3] or (fn: axis info -> ticks) or app. number of ticks for auto-ticks
- tickSize: null, // number or [number, "unit"]
- minTickSize: null, // number or [number, "unit"]
- tickFormatter: null, // fn: number -> string
- tickDecimals: null, // no. of decimals, null means auto
+ // possibly different color of ticks, e.g. "rgba(0,0,0,0.15)"
+ tickColor: null,
- tickColor: null, // possibly different color of ticks, e.g. "rgba(0,0,0,0.15)"
- tickLength: null, // size in pixels of ticks, or "full" for whole line
+ // size in pixels of ticks, or "full" for whole line
+ tickLength: null,
- tickWidth: null, // width of tick labels in pixels
- tickHeight: null, // height of tick labels in pixels
- tickFont: null, // null or font-spec object (see font, above)
+ // width of tick labels in pixels
+ tickWidth: null,
- label: null, // null or an axis label string
- labelFont: null, // null or font-spec object (see font, above)
- labelPadding: 2, // spacing between the axis and its label
+ // height of tick labels in pixels
+ tickHeight: null,
- reserveSpace: null, // whether to reserve space even if axis isn't shown
- alignTicksWithAxis: null // axis number or null for no sync
+ // null or font-spec object (see font, above)
+ tickFont: null,
+
+ // null or an axis label string
+ label: null,
+
+ // null or font-spec object (see font, above)
+ labelFont: null,
+
+ // spacing between the axis and its label
+ labelPadding: 2,
+
+ // whether to reserve space even if axis isn't shown
+ reserveSpace: null,
+
+ // axis number or null for no sync
+ alignTicksWithAxis: null
},
yaxis: {
- position: "left", // or "right"
+
+ // also accepts "right"
+ position: "left",
autoscaleMargin: 0.02,
labelPadding: 2
},
@@ -663,29 +714,46 @@ Licensed under the MIT license.
points: {
show: false,
radius: 3,
- lineWidth: 2, // in pixels
+
+ // value in pixels
+ lineWidth: 2,
fill: true,
fillColor: "#ffffff",
strokeColor: null,
- symbol: "circle" // or callback
+
+ // type or callback
+ symbol: "circle"
},
+
+
lines: {
+
// we don't put in show: false so we can see
// whether lines were actively disabled
- lineWidth: 2, // in pixels
+
+ // value in pixels
+ lineWidth: 2,
fill: false,
fillColor: null,
steps: false
+
// Omit 'zero', so we can later default its value to
// match that of the 'fill' option.
},
bars: {
show: false,
- lineWidth: 2, // in pixels
- barWidth: 1, // in units of the x axis
+
+ // in pixels
+ lineWidth: 2,
+
+ // in units of the x axis
+ barWidth: 1,
+
fill: true,
fillColor: null,
- align: "left", // "left", "right", or "center"
+
+ // "left", "right", or "center"
+ align: "left",
horizontal: false,
zero: true
},
@@ -695,36 +763,77 @@ Licensed under the MIT license.
grid: {
show: true,
aboveData: false,
- color: "#545454", // primary color used for outline and labels
- backgroundColor: null, // null for transparent, else color
- borderColor: null, // set if different from the grid color
- tickColor: null, // color for the ticks, e.g. "rgba(0,0,0,0.15)"
- margin: 0, // distance from the canvas edge to the grid
- labelMargin: 5, // in pixels
- axisMargin: 8, // in pixels
- borderWidth: 2, // in pixels
- minBorderMargin: null, // in pixels, null means taken from points radius
- markings: null, // array of ranges or fn: axes -> array of ranges
+
+ // primary color used for outline and labels
+ color: "#545454",
+
+ // null for transparent, else color
+ backgroundColor: null,
+
+ // set if different from the grid color
+ borderColor: null,
+
+ // color for the ticks, e.g. "rgba(0,0,0,0.15)"
+ tickColor: null,
+
+ // distance from the canvas edge to the grid
+ margin: 0,
+
+ // value in pixels
+ labelMargin: 5,
+
+ // value in pixels
+ axisMargin: 8,
+
+ // value in pixels
+ borderWidth: 2,
+
+ // value in pixels, null means taken from points radius
+ minBorderMargin: null,
+
+ // array of ranges or fn: axes -> array of ranges
+ markings: null,
markingsColor: "#f4f4f4",
markingsLineWidth: 2,
+
// interactive stuff
clickable: false,
hoverable: false,
- autoHighlight: true, // highlight in case mouse is near
- mouseActiveRadius: 10 // how far the mouse can be away to activate an item
+
+ // highlight in case mouse is near
+ autoHighlight: true,
+
+ // how far the mouse can be away to activate an item
+ mouseActiveRadius: 10
},
interaction: {
- redrawOverlayInterval: 1000 / 60 // time between updates, -1 means in same flow
+
+ // time between updates, -1 means in same flow
+ redrawOverlayInterval: 1000 / 60
},
hooks: {}
},
- surface = null, // the canvas for the plot itself
- overlay = null, // canvas for interactive stuff on top of plot
- eventHolder = null, // jQuery object that events should be bound to
- ctx = null, octx = null,
- xaxes = [], yaxes = [],
- plotOffset = { left: 0, right: 0, top: 0, bottom: 0 },
- plotWidth = 0, plotHeight = 0,
+
+ // the canvas for the plot itself
+ surface = null,
+
+ // canvas for interactive stuff on top of plot
+ overlay = null,
+
+ // jQuery object that events should be bound to
+ eventHolder = null,
+ ctx = null,
+ octx = null,
+ xaxes = [],
+ yaxes = [],
+ plotOffset = {
+ left: 0,
+ right: 0,
+ top: 0,
+ bottom: 0
+ },
+ plotWidth = 0,
+ plotHeight = 0,
hooks = {
processOptions: [],
processRawData: [],
@@ -825,7 +934,6 @@ Licensed under the MIT license.
function initPlugins() {
// References to key classes, allowing plugins to modify them
-
var classes = {
Canvas: Canvas
};
@@ -847,7 +955,6 @@ Licensed under the MIT license.
// colors are provided than the size of the default palette, we
// end up with those colors plus the remaining defaults, which is
// not expected behavior; avoid it by replacing them here.
-
if (opts && opts.colors) {
options.colors = opts.colors;
}
@@ -859,10 +966,14 @@ Licensed under the MIT license.
options.yaxis.color = $.color.parse(options.grid.color).scale("a", 0.22).toString();
}
- if (options.xaxis.tickColor == null) { // grid.tickColor for back-compatibility
+ if (options.xaxis.tickColor == null) {
+
+ // grid.tickColor for back-compatibility
options.xaxis.tickColor = options.grid.tickColor || options.xaxis.color;
}
- if (options.yaxis.tickColor == null) { // grid.tickColor for back-compatibility
+ if (options.yaxis.tickColor == null) {
+
+ // grid.tickColor for back-compatibility
options.yaxis.tickColor = options.grid.tickColor || options.yaxis.color;
}
@@ -878,7 +989,6 @@ Licensed under the MIT license.
// If no x/y axis options were provided, create one of each anyway,
// since the rest of the code assumes that they exist.
-
var i, axisOptions, axisCount,
fontSize = placeholder.css("font-size"),
fontSizeDefault = fontSize ? +fontSize.replace("px", "") : 13,
@@ -900,7 +1010,6 @@ Licensed under the MIT license.
}
// Compatibility with markrcote/flot-axislabels
-
if (axisOptions) {
if (!axisOptions.label && axisOptions.axisLabel) {
axisOptions.label = axisOptions.axisLabel;
@@ -953,7 +1062,6 @@ Licensed under the MIT license.
}
// Compatibility with markrcote/flot-axislabels
-
if (axisOptions) {
if (!axisOptions.label && axisOptions.axisLabel) {
axisOptions.label = axisOptions.axisLabel;
@@ -1074,7 +1182,9 @@ Licensed under the MIT license.
var s = $.extend(true, {}, options.series);
if (d[i].data != null) {
- s.data = d[i].data; // move the data instead of deep-copy
+
+ // move the data instead of deep-copy
+ s.data = d[i].data;
delete d[i].data;
$.extend(true, s, d[i]);
@@ -1091,21 +1201,28 @@ Licensed under the MIT license.
function axisNumber(obj, coord) {
var a = obj[coord + "axis"];
- if (typeof a === "object") { // if we got a real axis, extract number
+
+ if (typeof a === "object") {
+
+ // if we got a real axis, extract number
a = a.n;
}
if (!isNumeric(a)) {
- a = 1; // default to first axis
+
+ // default to first axis
+ a = 1;
}
return a;
}
function allAxes() {
+
// return flat array without annoying null entries
return $.grep(xaxes.concat(yaxes), function(a) { return a; });
}
function canvasToAxisCoords(pos) {
+
// return an object with x/y corresponding to all used axes
var res = {}, i, axis;
for (i = 0; i < xaxes.length; ++i) {
@@ -1133,6 +1250,7 @@ Licensed under the MIT license.
}
function axisToCanvasCoords(pos) {
+
// get canvas coords from the first pair of x/y found in pos
var res = {}, i, axis, key;
@@ -1172,7 +1290,9 @@ Licensed under the MIT license.
function getOrCreateAxis(axes, number) {
if (!axes[number - 1]) {
axes[number - 1] = {
- n: number, // save the number for future reference
+
+ // save the number for future reference
+ n: number,
direction: axes === xaxes ? "x" : "y",
options: $.extend(true, {}, axes === xaxes ? options.xaxis : options.yaxis)
};
@@ -1187,7 +1307,6 @@ Licensed under the MIT license.
// Subtract the number of series that already have fixed colors or
// color indexes from the number that we still need to generate.
-
for (i = 0; i < series.length; ++i) {
var sc = series[i].color;
if (sc != null) {
@@ -1200,14 +1319,12 @@ Licensed under the MIT license.
// If any of the series have fixed color indexes, then we need to
// generate at least as many colors as the highest index.
-
if (neededColors <= maxIndex) {
neededColors = maxIndex + 1;
}
// Generate all the colors, using first the option colors and then
// variations on those colors once they're exhausted.
-
var c, colors = [], colorPool = options.colors,
colorPoolSize = colorPool.length, variation = 0;
@@ -1222,7 +1339,6 @@ Licensed under the MIT license.
// Reset the variation after every few cycles, or else
// it will end up producing only white or black colors.
-
if (i % colorPoolSize === 0 && i) {
if (variation >= 0) {
if (variation < 0.5) {
@@ -1239,7 +1355,6 @@ Licensed under the MIT license.
}
// Finalize the series options, filling in their colors
-
var colori = 0, s;
for (i = 0; i < series.length; ++i) {
s = series[i];
@@ -1268,7 +1383,6 @@ Licensed under the MIT license.
// If nothing was provided for lines.zero, default it to match
// lines.fill, since areas by default should extend to zero.
-
if (s.lines.zero == null) {
s.lines.zero = !!s.lines.fill;
}
@@ -1295,6 +1409,7 @@ Licensed under the MIT license.
}
$.each(allAxes(), function(_, axis) {
+
// init axis
axis.datamin = topSentry;
axis.datamax = bottomSentry;
@@ -1316,6 +1431,7 @@ Licensed under the MIT license.
if (!format) {
format = [];
+
// find out how to copy
format.push({ x: true, number: true, required: true });
format.push({ y: true, number: true, required: true });
@@ -1333,7 +1449,9 @@ Licensed under the MIT license.
}
if (s.datapoints.pointsize != null) {
- continue; // already filled in
+
+ // already filled in
+ continue;
}
s.datapoints.pointsize = format.length;
@@ -1354,7 +1472,9 @@ Licensed under the MIT license.
if (f) {
if (f.number && val != null) {
- val = +val; // convert to number
+
+ // convert to number
+ val = +val;
if (isNaN(val)) {
val = null;
} else if (val === Infinity) {
@@ -1384,6 +1504,7 @@ Licensed under the MIT license.
val = points[k + m];
if (val != null) {
f = format[m];
+
// extract min/max info
if (f.autoscale !== false) {
if (f.x) {
@@ -1449,6 +1570,7 @@ Licensed under the MIT license.
}
if (s.bars.show) {
+
// make sure we got room for the bar on the dancing floor
var delta;
@@ -1491,17 +1613,22 @@ Licensed under the MIT license.
// Make sure the placeholder is clear of everything except canvases
// from a previous plot in this container that we'll try to re-use.
- placeholder.css("padding", 0) // padding messes up the positioning
+ // padding messes up the positioning
+ placeholder.css("padding", 0)
.children().filter(function() {
return !$(this).hasClass("flot-overlay") && !$(this).hasClass("flot-base");
}).remove();
if (placeholder.css("position") === "static") {
- placeholder.css("position", "relative"); // for positioning labels and overlay
+
+ // for positioning labels and overlay
+ placeholder.css("position", "relative");
}
surface = new Canvas("flot-base", placeholder);
- overlay = new Canvas("flot-overlay", placeholder); // overlay canvas for interactive features
+
+ // overlay canvas for interactive features
+ overlay = new Canvas("flot-overlay", placeholder);
ctx = surface.context;
octx = overlay.context;
@@ -1510,7 +1637,6 @@ Licensed under the MIT license.
eventHolder = $(overlay.element).unbind();
// If we're re-using a plot object, shut down the old one
-
var existing = placeholder.data("plot");
if (existing) {
@@ -1523,6 +1649,7 @@ Licensed under the MIT license.
}
function bindEvents() {
+
// bind events
if (options.grid.hoverable) {
eventHolder.mousemove(onMouseMove);
@@ -1532,7 +1659,6 @@ Licensed under the MIT license.
// for mouseenter or mouseleave. This was a bug/oversight that
// was fixed somewhere around 1.3.x. We can return to using
// .mouseleave when we drop support for 1.2.6.
-
eventHolder.bind("mouseleave", onMouseLeave);
}
@@ -1556,9 +1682,9 @@ Licensed under the MIT license.
}
function setTransformationHelpers(axis) {
+
// set helper functions on the axis, assumes plot area
// has been computed already
-
function identity(x) { return x; }
var s, m, t = axis.options.transform || identity,
@@ -1576,11 +1702,14 @@ Licensed under the MIT license.
}
// data point to canvas coordinate
- if (t === identity) { // slight optimization
+ if (t === identity) {
+
+ // slight optimization
axis.p2c = function(p) { return (p - m) * s; };
} else {
axis.p2c = function(p) { return (t(p) - m) * s; };
}
+
// canvas coordinate to data point
if (!it) {
axis.c2p = function(c) { return m + c / s; };
@@ -1593,6 +1722,7 @@ Licensed under the MIT license.
var opts = axis.options,
ticks = axis.ticks || [],
+
// Label width & height are deprecated; remove in 1.0!
tickWidth = opts.tickWidth || opts.labelWidth || 0,
tickHeight = opts.tickHeight || opts.labelHeight || 0,
@@ -1619,18 +1749,17 @@ Licensed under the MIT license.
axis.tickHeight = opts.tickHeight || opts.labelHeight || tickHeight;
// Label width/height properties are deprecated; remove in 1.0!
-
axis.labelWidth = axis.tickWidth;
axis.labelHeight = axis.tickHeight;
}
- ///////////////////////////////////////////////////////////////////////
- // Compute the axis bounding box based on the dimensions of its label
- // and tick labels, then adjust the plotOffset to make room for it.
- //
- // This first phase only considers one dimension per axis; the other
- // dimension depends on the other axes, and will be calculated later.
-
+ /**
+ * Compute the axis bounding box based on the dimensions of its label
+ * and tick labels, then adjust the plotOffset to make room for it.
+ *
+ * This first phase only considers one dimension per axis; the other
+ * dimension depends on the other axes, and will be calculated later.
+ */
function allocateAxisBoxFirstPhase(axis) {
var contentWidth = axis.tickWidth,
@@ -1647,7 +1776,6 @@ Licensed under the MIT license.
found = false;
// Determine the axis's position in its direction and on its side
-
$.each(isXAxis ? xaxes : yaxes, function(i, a) {
if (a && a.reserveSpace) {
if (a === axis) {
@@ -1666,13 +1794,11 @@ Licensed under the MIT license.
});
// 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;
}
@@ -1682,7 +1808,6 @@ Licensed under the MIT license.
}
// Measure the dimensions of the axis label, if it has one
-
if (axisOptions.label) {
var legacyStyles = "Axis " + axis.direction + axis.n + "Axis",
layer = "flot-" + axis.direction + "-axis flot-" + axis.direction + axis.n + "-axis " + axis.direction + legacyStyles,
@@ -1694,7 +1819,6 @@ Licensed under the MIT license.
}
// Compute the axis bounding box and update the plot bounds
-
if (isXAxis) {
contentHeight += padding;
if (axisPosition === "top") {
@@ -1722,6 +1846,7 @@ Licensed under the MIT license.
}
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") {
@@ -1734,9 +1859,9 @@ Licensed under the MIT license.
}
function adjustLayoutForThingsStickingOut() {
+
// possibly adjust plot offset to ensure everything stays
// inside the canvas and isn't clipped off
-
var minMargin = options.grid.minBorderMargin;
// check stuff from the plot (FIXME: this should just read
@@ -1789,7 +1914,6 @@ Licensed under the MIT license.
i, a;
// Initialize the plot's offset from the edge of the canvas
-
for (a in plotOffset) {
if (Object.prototype.hasOwnProperty.call(plotOffset, a)) {
plotOffset[a] = isNumeric(margin) ? margin : margin[a] || 0;
@@ -1799,7 +1923,6 @@ Licensed under the MIT license.
executeHooks(hooks.processOffset, [plotOffset]);
// If the grid is visible, add its border width to the offset
-
for (a in plotOffset) {
if (typeof(options.grid.borderWidth) === "object") {
plotOffset[a] += showGrid ? options.grid.borderWidth[a] : 0;
@@ -1812,7 +1935,9 @@ Licensed under the MIT license.
$.each(axes, function(_, axis) {
axis.show = axis.options.show;
if (axis.show == null) {
- axis.show = axis.used; // by default an axis is visible if it's got data
+
+ // by default an axis is visible if it's got data
+ axis.show = axis.used;
}
axis.reserveSpace = axis.show || axis.options.reserveSpace;
@@ -1825,6 +1950,7 @@ Licensed under the MIT license.
var allocatedAxes = $.grep(axes, function(axis) { return axis.reserveSpace; });
$.each(allocatedAxes, function(_, axis) {
+
// make the ticks
setupTickGeneration(axis);
setTicks(axis);
@@ -1870,23 +1996,28 @@ Licensed under the MIT license.
delta = max - min;
if (delta === 0.0) {
+
// degenerate case
var widen = max === 0 ? 1 : 0.01;
if (opts.min == null) {
min -= widen;
}
+
// always widen max if we couldn't widen min to ensure we
// don't fall into min == max which doesn't work
+
if (opts.max == null || opts.min != null) {
max += widen;
}
} else {
+
// consider autoscaling
var margin = opts.autoscaleMargin;
if (margin != null) {
if (opts.min == null) {
min -= delta * margin;
+
// make sure we don't go below zero if all values
// are positive
if (min < 0 && axis.datamin != null && axis.datamin >= 0) {
@@ -1909,12 +2040,12 @@ Licensed under the MIT license.
var opts = axis.options,
// estimate number of ticks
-
noTicks;
if (isNumeric(opts.ticks) && opts.ticks > 0) {
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);
@@ -1929,13 +2060,16 @@ Licensed under the MIT license.
}
var magn = Math.pow(10, -dec),
- norm = delta / magn, // norm is between 1.0 and 10.0
+
+ // norm is between 1.0 and 10.0
+ norm = delta / magn,
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;
@@ -1959,14 +2093,12 @@ Licensed under the MIT license.
// Time mode was moved to a plug-in in 0.8, but since so many people use this
// we'll add an especially friendly make sure they remembered to include 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) {
@@ -1993,7 +2125,6 @@ Licensed under the MIT license.
// 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("."),
precision = decimal === -1 ? 0 : formatted.length - decimal - 1;
@@ -2014,6 +2145,7 @@ Licensed under the MIT license.
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) {
@@ -2026,6 +2158,7 @@ Licensed under the MIT license.
}
axis.tickGenerator = function(axis) {
+
// copy ticks, scaled to this axis
var ticks = [], v, i;
for (i = 0; i < otherAxis.ticks.length; ++i) {
@@ -2059,6 +2192,7 @@ Licensed under the MIT license.
ticks = axis.tickGenerator(axis);
} else if (oticks) {
if ($.isFunction(oticks)) {
+
// generate the ticks
ticks = oticks(axis);
} else {
@@ -2092,6 +2226,7 @@ Licensed under the MIT license.
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);
@@ -2146,7 +2281,9 @@ Licensed under the MIT license.
if (axis.direction === coord) {
key = coord + axis.n + "axis";
if (!ranges[key] && axis.n === 1) {
- key = coord + "axis"; // support x1axis as xaxis
+
+ // support x1axis as xaxis
+ key = coord + "axis";
}
if (ranges[key]) {
from = ranges[key].from;
@@ -2199,6 +2336,7 @@ Licensed under the MIT license.
if (markings) {
if ($.isFunction(markings)) {
axes = plot.getAxes();
+
// xmin etc. is backwards compatibility, to be
// removed in the future
axes.xmin = axes.xaxis.min;
@@ -2277,7 +2415,6 @@ Licensed under the MIT license.
}
// draw ticks
-
ctx.strokeStyle = axis.options.tickColor;
ctx.beginPath();
@@ -2287,6 +2424,7 @@ Licensed under the MIT license.
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)
@@ -2329,6 +2467,7 @@ Licensed under the MIT license.
// 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;
@@ -2386,11 +2525,11 @@ Licensed under the MIT license.
}
function drawMarkings(markings, markingLayer) {
- if (!markings) {
- return;
- }
+ if (!markings) {
+ return;
+ }
- for (var i = 0; i < markings.length; i++) {
+ for (var i = 0; i < markings.length; i++) {
drawMarking(markings[i], markingLayer);
}
}
@@ -2432,6 +2571,7 @@ Licensed under the MIT license.
if (xrange.from !== xrange.to || xrange.from !== yrange.to) {
if (xrange.from === xrange.to || yrange.from === yrange.to) {
+
// draw line
ctx.beginPath();
ctx.strokeStyle = m.color || options.grid.markingsColor;
@@ -2440,6 +2580,7 @@ Licensed under the MIT license.
ctx.lineTo(xrange.to, yrange.to);
ctx.stroke();
} else {
+
// fill area
ctx.fillStyle = m.color || options.grid.markingsColor;
@@ -2455,12 +2596,11 @@ Licensed under the MIT license.
}
if (m.text) {
- // left aligned horizontal position:
+ // left aligned horizontal position:
var xPos = xrange.from + plotOffset.left,
// top baselined vertical position:
-
yPos = (yrange.to + plotOffset.top);
if (!!m.textAlign) {
@@ -2504,7 +2644,6 @@ Licensed under the MIT license.
// Remove text before checking for axis.show and ticks.length;
// otherwise plugins, like flot-tickrotor, that draw their own
// tick labels will end up with both theirs and the defaults.
-
surface.removeText(layer);
if (!axis.show || axis.ticks.length === 0) {
@@ -2528,7 +2667,6 @@ Licensed under the MIT license.
}
// Add labels for the ticks on this axis
-
for (var i = 0; i < axis.ticks.length; ++i) {
tick = axis.ticks[i];
@@ -2592,8 +2730,11 @@ Licensed under the MIT license.
// clip with ymin
if (y1 <= y2 && y1 < axisy.min) {
if (y2 < axisy.min) {
- continue; // line segment is outside
+
+ // line segment is outside
+ continue;
}
+
// compute new intersection point
x1 = showSteps ? x2 : (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
y1 = axisy.min;
@@ -2656,6 +2797,7 @@ Licensed under the MIT license.
prevx = x2;
prevy = y2;
+
// Draw a step
if (showSteps) {
if (x1 < x2) {
@@ -2685,7 +2827,8 @@ Licensed under the MIT license.
break;
}
- i += ps; // ps is negative if going backwards
+ // ps is negative if going backwards
+ i += ps;
var x1 = points[i - ps],
y1 = points[i - ps + ypos],
@@ -2693,6 +2836,7 @@ Licensed under the MIT license.
if (areaOpen) {
if (ps > 0 && x1 != null && x2 == null) {
+
// at turning point
segmentEnd = i;
ps = -ps;
@@ -2701,6 +2845,7 @@ Licensed under the MIT license.
}
if (ps < 0 && i === segmentStart + ps) {
+
// done with the reverse sweep
ctx.fill();
areaOpen = false;
@@ -2748,6 +2893,7 @@ Licensed under the MIT license.
}
if (!areaOpen) {
+
// open area
ctx.beginPath();
ctx.moveTo(axisx.p2c(x1), axisy.p2c(bottom));
@@ -2792,17 +2938,18 @@ Licensed under the MIT license.
y2 = axisy.max;
}
- // if the x value was changed we got a rectangle
- // to fill
+ // if the x value was changed we got a rectangle to fill
if (x1 !== x1old) {
- ctx.lineTo(axisx.p2c(x1old), axisy.p2c(y1));
+
// it goes to (x1, y1), but we fill that below
+ ctx.lineTo(axisx.p2c(x1old), axisy.p2c(y1));
}
// fill triangular section, this sometimes result
// in redundant points if (x1, y1) hasn't changed
// from previous line to, but we just ignore that
ctx.lineTo(axisx.p2c(x1), axisy.p2c(y1));
+
// Draw a step
if (showSteps) {
if (x1 < x2) {
@@ -2827,11 +2974,14 @@ Licensed under the MIT license.
var lw = series.lines.lineWidth,
sw = series.shadowSize;
+
// FIXME: consider another form of shadow when filling is turned on
if (lw > 0 && sw > 0) {
+
// draw shadow as a thick and thin line with transparency
ctx.lineWidth = sw;
ctx.strokeStyle = "rgba(0,0,0,0.1)";
+
// position shadow at angle from the mid of line
var angle = Math.PI / 18;
plotLine(series.datapoints, Math.sin(angle) * (lw / 2 + sw / 2), Math.cos(angle) * (lw / 2 + sw / 2), series.xaxis, series.yaxis);
@@ -2893,12 +3043,12 @@ Licensed under the MIT license.
// small value. A line width of 0 seems to force the default of 1.
// Doing the conditional here allows the shadow setting to still be
// optional even with a lineWidth of 0.
-
if (lw === 0) {
lw = 0.0001;
}
if (lw > 0 && sw > 0) {
+
// draw shadow in two steps
var w = sw / 2;
ctx.lineWidth = w;
@@ -3096,7 +3246,6 @@ Licensed under the MIT license.
var entries = [], lf = options.legend.labelFormatter, s, label, i;
// Build a list of legend entries, with each having a label and a color
-
for (i = 0; i < series.length; ++i) {
s = series[i];
if (s.label) {
@@ -3111,13 +3260,11 @@ Licensed under the MIT license.
}
// No entries implies no legend
-
if (entries.length === 0) {
return;
}
// Sort the legend using either the default or a custom comparator
-
if (options.legend.sorted) {
if ($.isFunction(options.legend.sorted)) {
entries.sort(options.legend.sorted);
@@ -3134,7 +3281,6 @@ Licensed under the MIT license.
}
// Generate markup for the list of entries, in their final order
-
var table = $("").css({
"font-size": "smaller",
"color": options.grid.color
@@ -3192,6 +3338,7 @@ Licensed under the MIT license.
}
var legend = $("").addClass("legend").append(table.css(pos)).appendTo(placeholder);
if (options.legend.backgroundOpacity !== 0.0) {
+
// put in the transparent background
// separately to avoid blended labels and
// label boxes
@@ -3220,11 +3367,12 @@ Licensed under the MIT license.
}
// interactive features
-
var highlights = [],
redrawTimeout = null;
- // returns the data item the mouse is over, or null if none is found
+ /**
+ * returns the data item the mouse is over, or null if none is found
+ */
function findNearbyItem(mouseX, mouseY, seriesFilter) {
var maxDistance = options.grid.mouseActiveRadius,
smallestDistance = maxDistance * maxDistance + 1,
@@ -3239,13 +3387,16 @@ Licensed under the MIT license.
axisx = s.xaxis,
axisy = s.yaxis,
points = s.datapoints.points,
- mx = axisx.c2p(mouseX), // precompute some stuff to make the loop faster
+
+ // precompute some stuff to make the loop faster
+ mx = axisx.c2p(mouseX),
my = axisy.c2p(mouseY),
maxx = maxDistance / axisx.scale,
maxy = maxDistance / axisy.scale,
x, y;
ps = s.datapoints.pointsize;
+
// with inverse transforms, we can't use the maxx/maxy
// optimization, sadly
if (axisx.options.inverseTransform) {
@@ -3287,8 +3438,9 @@ Licensed under the MIT license.
}
}
- if (s.bars.show && !item) { // no other point can be nearby
+ if (s.bars.show && !item) {
+ // no other point can be nearby
var barLeft, barRight;
switch (s.bars.align) {
@@ -3357,8 +3509,10 @@ Licensed under the MIT license.
function(s) { return s.clickable !== false; });
}
- // trigger click or hover event (they send the same parameters
- // so we share their code)
+ /**
+ * trigger click or hover event (they send the same parameters
+ * so we share their code)
+ */
function triggerClickHoverEvent(eventname, event, seriesFilter) {
var offset = eventHolder.offset(),
canvasX = event.pageX - offset.left - plotOffset.left,
@@ -3371,12 +3525,14 @@ Licensed under the MIT license.
var item = findNearbyItem(canvasX, canvasY, seriesFilter);
if (item) {
+
// fill in mouse pos for any listeners out there
item.pageX = parseInt(item.series.xaxis.p2c(item.datapoint[0]) + offset.left + plotOffset.left, 10);
item.pageY = parseInt(item.series.yaxis.p2c(item.datapoint[1]) + offset.top + plotOffset.top, 10);
}
if (options.grid.autoHighlight) {
+
// clear auto-highlights
for (var i = 0; i < highlights.length; ++i) {
var h = highlights[i];
@@ -3399,7 +3555,10 @@ Licensed under the MIT license.
function triggerRedrawOverlay() {
var t = options.interaction.redrawOverlayInterval;
- if (t === -1) { // skip event queue
+
+ if (t === -1) {
+
+ // skip event queue
drawOverlay();
return;
}
@@ -3544,6 +3703,7 @@ Licensed under the MIT license.
if (typeof spec === "string") {
return spec;
} else {
+
// assume this is a gradient spec; IE currently only
// supports a simple vertical gradient properly, so that's
// what we support too
@@ -3569,12 +3729,11 @@ Licensed under the MIT license.
}
}
- // Add the plot function to the top level of the jQuery object
-
+ /**
+ * Add the plot function to the top level of the jQuery object
+ */
$.plot = function(placeholder, data, options) {
- //var t0 = new Date();
var plot = new Plot($(placeholder), data, options, $.plot.plugins);
- //(window.console ? console.log : alert)("time used (msecs): " + ((new Date()).getTime() - t0.getTime()));
return plot;
};
@@ -3582,30 +3741,35 @@ Licensed under the MIT license.
$.plot.plugins = [];
- // Also add the plot function as a chainable property
-
+ /**
+ * Also add the plot function as a chainable property
+ */
$.fn.plot = function(data, options) {
return this.each(function() {
$.plot(this, data, options);
});
};
- // round to nearby lower multiple of base
+ /**
+ * round to nearby lower multiple of base
+ */
function floorInBase(n, base) {
return base * Math.floor(n / base);
}
- // Draw a rectangle with rounded corner on the canvas.
- //
- // @param {CanvasRenderingContext2D} ctx The canvas 2D context.
- // @param {number} x The x-axis coordinate of the upper left corner of
- // the rectangle to be drawn.
- // @param {number} y The y-axis coordinate of the upper left corner of
- // the rectangle to be drawn.
- // @param {number} width The width of the rectangle to be drawn.
- // @param {number} height The height of the rectangle to be drawn.
- // @param {number} radius The radius of the corner of the rectangle
- // to be drawn.
+ /**
+ * Draw a rectangle with rounded corner on the canvas.
+ *
+ * @param {CanvasRenderingContext2D} ctx The canvas 2D context.
+ * @param {number} x The x-axis coordinate of the upper left corner of
+ * the rectangle to be drawn.
+ * @param {number} y The y-axis coordinate of the upper left corner of
+ * the rectangle to be drawn.
+ * @param {number} width The width of the rectangle to be drawn.
+ * @param {number} height The height of the rectangle to be drawn.
+ * @param {number} radius The radius of the corner of the rectangle
+ * to be drawn.
+ */
function roundRect(ctx, x, y, width, height, radius) {
var r = x + width,
b = y + height;