[ceph.git] / ceph / src / pybind / mgr / dashboard / static / AdminLTE-2.3.7 / plugins / flot / jquery.flot.stack.js

/* Flot plugin for stacking data sets rather than overlyaing them.

Copyright (c) 2007-2013 IOLA and Ole Laursen.
Licensed under the MIT license.

The plugin assumes the data is sorted on x (or y if stacking horizontally).
For line charts, it is assumed that if a line has an undefined gap (from a
null point), then the line above it should have the same gap - insert zeros
instead of "null" if you want another behaviour. This also holds for the start
and end of the chart. Note that stacking a mix of positive and negative values
in most instances doesn't make sense (so it looks weird).

Two or more series are stacked when their "stack" attribute is set to the same
key (which can be any number or string or just "true"). To specify the default
stack, you can set the stack option like this:

	series: {
		stack: null/false, true, or a key (number/string)
	}

You can also specify it for a single series, like this:

	$.plot( $("#placeholder"), [{
		data: [ ... ],
		stack: true
	}])

The stacking order is determined by the order of the data series in the array
(later series end up on top of the previous).

Internally, the plugin modifies the datapoints in each series, adding an
offset to the y value. For line series, extra data points are inserted through
interpolation. If there's a second y value, it's also adjusted (e.g for bar
charts or filled areas).

*/

(function ($) {
    var options = {
        series: { stack: null } // or number/string
    };
    
    function init(plot) {
        function findMatchingSeries(s, allseries) {
            var res = null;
            for (var i = 0; i < allseries.length; ++i) {
                if (s == allseries[i])
                    break;
                
                if (allseries[i].stack == s.stack)
                    res = allseries[i];
            }
            
            return res;
        }
        
        function stackData(plot, s, datapoints) {
            if (s.stack == null || s.stack === false)
                return;

            var other = findMatchingSeries(s, plot.getData());
            if (!other)
                return;

            var ps = datapoints.pointsize,
                points = datapoints.points,
                otherps = other.datapoints.pointsize,
                otherpoints = other.datapoints.points,
                newpoints = [],
                px, py, intery, qx, qy, bottom,
                withlines = s.lines.show,
                horizontal = s.bars.horizontal,
                withbottom = ps > 2 && (horizontal ? datapoints.format[2].x : datapoints.format[2].y),
                withsteps = withlines && s.lines.steps,
                fromgap = true,
                keyOffset = horizontal ? 1 : 0,
                accumulateOffset = horizontal ? 0 : 1,
                i = 0, j = 0, l, m;

            while (true) {
                if (i >= points.length)
                    break;

                l = newpoints.length;

                if (points[i] == null) {
                    // copy gaps
                    for (m = 0; m < ps; ++m)
                        newpoints.push(points[i + m]);
                    i += ps;
                }
                else if (j >= otherpoints.length) {
                    // for lines, we can't use the rest of the points
                    if (!withlines) {
                        for (m = 0; m < ps; ++m)
                            newpoints.push(points[i + m]);
                    }
                    i += ps;
                }
                else if (otherpoints[j] == null) {
                    // oops, got a gap
                    for (m = 0; m < ps; ++m)
                        newpoints.push(null);
                    fromgap = true;
                    j += otherps;
                }
                else {
                    // cases where we actually got two points
                    px = points[i + keyOffset];
                    py = points[i + accumulateOffset];
                    qx = otherpoints[j + keyOffset];
                    qy = otherpoints[j + accumulateOffset];
                    bottom = 0;

                    if (px == qx) {
                        for (m = 0; m < ps; ++m)
                            newpoints.push(points[i + m]);

                        newpoints[l + accumulateOffset] += qy;
                        bottom = qy;
                        
                        i += ps;
                        j += otherps;
                    }
                    else if (px > qx) {
                        // we got past point below, might need to
                        // insert interpolated extra point
                        if (withlines && i > 0 && points[i - ps] != null) {
                            intery = py + (points[i - ps + accumulateOffset] - py) * (qx - px) / (points[i - ps + keyOffset] - px);
                            newpoints.push(qx);
                            newpoints.push(intery + qy);
                            for (m = 2; m < ps; ++m)
                                newpoints.push(points[i + m]);
                            bottom = qy; 
                        }

                        j += otherps;
                    }
                    else { // px < qx
                        if (fromgap && withlines) {
                            // if we come from a gap, we just skip this point
                            i += ps;
                            continue;
                        }
                            
                        for (m = 0; m < ps; ++m)
                            newpoints.push(points[i + m]);
                        
                        // we might be able to interpolate a point below,
                        // this can give us a better y
                        if (withlines && j > 0 && otherpoints[j - otherps] != null)
                            bottom = qy + (otherpoints[j - otherps + accumulateOffset] - qy) * (px - qx) / (otherpoints[j - otherps + keyOffset] - qx);

                        newpoints[l + accumulateOffset] += bottom;
                        
                        i += ps;
                    }

                    fromgap = false;
                    
                    if (l != newpoints.length && withbottom)
                        newpoints[l + 2] += bottom;
                }

                // maintain the line steps invariant
                if (withsteps && l != newpoints.length && l > 0
                    && newpoints[l] != null
                    && newpoints[l] != newpoints[l - ps]
                    && newpoints[l + 1] != newpoints[l - ps + 1]) {
                    for (m = 0; m < ps; ++m)
                        newpoints[l + ps + m] = newpoints[l + m];
                    newpoints[l + 1] = newpoints[l - ps + 1];
                }
            }

            datapoints.points = newpoints;
        }
        
        plot.hooks.processDatapoints.push(stackData);
    }
    
    $.plot.plugins.push({
        init: init,
        options: options,
        name: 'stack',
        version: '1.2'
    });
})(jQuery);
Commit	Line	Data
31f18b77 FG	1	/* Flot plugin for stacking data sets rather than overlyaing them.
	2
	3	Copyright (c) 2007-2013 IOLA and Ole Laursen.
	4	Licensed under the MIT license.
	5
	6	The plugin assumes the data is sorted on x (or y if stacking horizontally).
	7	For line charts, it is assumed that if a line has an undefined gap (from a
	8	null point), then the line above it should have the same gap - insert zeros
	9	instead of "null" if you want another behaviour. This also holds for the start
	10	and end of the chart. Note that stacking a mix of positive and negative values
	11	in most instances doesn't make sense (so it looks weird).
	12
	13	Two or more series are stacked when their "stack" attribute is set to the same
	14	key (which can be any number or string or just "true"). To specify the default
	15	stack, you can set the stack option like this:
	16
	17	series: {
	18	stack: null/false, true, or a key (number/string)
	19	}
	20
	21	You can also specify it for a single series, like this:
	22
	23	$.plot( $("#placeholder"), [{
	24	data: [ ... ],
	25	stack: true
	26	}])
	27
	28	The stacking order is determined by the order of the data series in the array
	29	(later series end up on top of the previous).
	30
	31	Internally, the plugin modifies the datapoints in each series, adding an
	32	offset to the y value. For line series, extra data points are inserted through
	33	interpolation. If there's a second y value, it's also adjusted (e.g for bar
	34	charts or filled areas).
	35
	36	*/
	37
	38	(function ($) {
	39	var options = {
	40	series: { stack: null } // or number/string
	41	};
	42
	43	function init(plot) {
	44	function findMatchingSeries(s, allseries) {
	45	var res = null;
	46	for (var i = 0; i < allseries.length; ++i) {
	47	if (s == allseries[i])
	48	break;
	49
	50	if (allseries[i].stack == s.stack)
	51	res = allseries[i];
	52	}
	53
	54	return res;
	55	}
	56
	57	function stackData(plot, s, datapoints) {
	58	if (s.stack == null \|\| s.stack === false)
	59	return;
	60
	61	var other = findMatchingSeries(s, plot.getData());
	62	if (!other)
	63	return;
	64
65	var ps = datapoints.pointsize,
66	points = datapoints.points,
67	otherps = other.datapoints.pointsize,
68	otherpoints = other.datapoints.points,
69	newpoints = [],
70	px, py, intery, qx, qy, bottom,
71	withlines = s.lines.show,
72	horizontal = s.bars.horizontal,
73	withbottom = ps > 2 && (horizontal ? datapoints.format[2].x : datapoints.format[2].y),
74	withsteps = withlines && s.lines.steps,
75	fromgap = true,
76	keyOffset = horizontal ? 1 : 0,
77	accumulateOffset = horizontal ? 0 : 1,
78	i = 0, j = 0, l, m;
79
80	while (true) {
81	if (i >= points.length)
82	break;
83
84	l = newpoints.length;
85
86	if (points[i] == null) {
87	// copy gaps
88	for (m = 0; m < ps; ++m)
89	newpoints.push(points[i + m]);
90	i += ps;
91	}
92	else if (j >= otherpoints.length) {
93	// for lines, we can't use the rest of the points
94	if (!withlines) {
95	for (m = 0; m < ps; ++m)
96	newpoints.push(points[i + m]);
97	}
98	i += ps;
99	}
100	else if (otherpoints[j] == null) {
101	// oops, got a gap
102	for (m = 0; m < ps; ++m)
103	newpoints.push(null);
104	fromgap = true;
105	j += otherps;
106	}
107	else {
108	// cases where we actually got two points
109	px = points[i + keyOffset];
110	py = points[i + accumulateOffset];
111	qx = otherpoints[j + keyOffset];
112	qy = otherpoints[j + accumulateOffset];
113	bottom = 0;
114
115	if (px == qx) {
116	for (m = 0; m < ps; ++m)
117	newpoints.push(points[i + m]);
118
119	newpoints[l + accumulateOffset] += qy;
120	bottom = qy;
121
122	i += ps;
123	j += otherps;
124	}
125	else if (px > qx) {
126	// we got past point below, might need to
127	// insert interpolated extra point
128	if (withlines && i > 0 && points[i - ps] != null) {
129	intery = py + (points[i - ps + accumulateOffset] - py) * (qx - px) / (points[i - ps + keyOffset] - px);
130	newpoints.push(qx);
131	newpoints.push(intery + qy);
132	for (m = 2; m < ps; ++m)
133	newpoints.push(points[i + m]);
134	bottom = qy;
135	}
136
137	j += otherps;
138	}
139	else { // px < qx
140	if (fromgap && withlines) {
141	// if we come from a gap, we just skip this point
142	i += ps;
143	continue;
144	}
145
146	for (m = 0; m < ps; ++m)
147	newpoints.push(points[i + m]);
148
149	// we might be able to interpolate a point below,
150	// this can give us a better y
151	if (withlines && j > 0 && otherpoints[j - otherps] != null)
152	bottom = qy + (otherpoints[j - otherps + accumulateOffset] - qy) * (px - qx) / (otherpoints[j - otherps + keyOffset] - qx);
153
154	newpoints[l + accumulateOffset] += bottom;
155
156	i += ps;
157	}
158
159	fromgap = false;
160
161	if (l != newpoints.length && withbottom)
162	newpoints[l + 2] += bottom;
163	}
164
165	// maintain the line steps invariant
166	if (withsteps && l != newpoints.length && l > 0
167	&& newpoints[l] != null
168	&& newpoints[l] != newpoints[l - ps]
169	&& newpoints[l + 1] != newpoints[l - ps + 1]) {
170	for (m = 0; m < ps; ++m)
171	newpoints[l + ps + m] = newpoints[l + m];
172	newpoints[l + 1] = newpoints[l - ps + 1];
173	}
174	}
175
176	datapoints.points = newpoints;
177	}
178
179	plot.hooks.processDatapoints.push(stackData);
180	}
181
182	$.plot.plugins.push({
183	init: init,
184	options: options,
185	name: 'stack',
186	version: '1.2'
187	});
188	})(jQuery);