FM / flot

/home/techb158/immovalet.ca/report/bower_components/flot/

/home/techb158/immovalet.ca/report/bower_components/flot

Name	Size	Mode	Actions
examples/	-	0777	rm
.bower.json	449	0666	edit dl rm
.gitignore	43	0666	edit dl rm
.travis.yml	38	0666	edit dl rm
API.md	53572	0666	edit dl rm
component.json	114	0666	edit dl rm
CONTRIBUTING.md	3242	0666	edit dl rm
excanvas.js	43371	0666	edit dl rm
excanvas.min.js	19314	0666	edit dl rm
FAQ.md	3237	0666	edit dl rm
flot.jquery.json	836	0666	edit dl rm
jquery.colorhelpers.js	6331	0666	edit dl rm
jquery.flot.canvas.js	9944	0666	edit dl rm
jquery.flot.categories.js	6223	0666	edit dl rm
jquery.flot.crosshair.js	5601	0666	edit dl rm
jquery.flot.errorbars.js	12967	0666	edit dl rm
jquery.flot.fillbetween.js	5483	0666	edit dl rm
jquery.flot.image.js	7601	0666	edit dl rm
jquery.flot.js	124764	0666	edit dl rm
jquery.flot.navigate.js	14536	0666	edit dl rm
jquery.flot.pie.js	24451	0666	edit dl rm
jquery.flot.resize.js	3195	0666	edit dl rm
jquery.flot.selection.js	13501	0666	edit dl rm
jquery.flot.stack.js	7278	0666	edit dl rm
jquery.flot.symbol.js	2576	0666	edit dl rm
jquery.flot.threshold.js	4622	0666	edit dl rm
jquery.flot.time.js	12160	0666	edit dl rm
jquery.js	275529	0666	edit dl rm
LICENSE.txt	1091	0666	edit dl rm
Makefile	297	0666	edit dl rm
NEWS.md	38339	0666	edit dl rm
package.json	154	0666	edit dl rm
PLUGINS.md	4340	0666	edit dl rm
README.md	3782	0666	edit dl rm

Edit: /home/techb158/immovalet.ca/report/bower_components/flot/jquery.flot.image.js (7601B)

/* Flot plugin for plotting images.

The data syntax is [ [ image, x1, y1, x2, y2 ], ... ] where (x1, y1) and
(x2, y2) are where you intend the two opposite corners of the image to end up
in the plot. Image must be a fully loaded Javascript image (you can make one
with new Image()). If the image is not complete, it's skipped when plotting.

There are two helpers included for retrieving images. The easiest work the way
that you put in URLs instead of images in the data, like this:

[ "myimage.png", 0, 0, 10, 10 ]

Then call $.plot.image.loadData( data, options, callback ) where data and
options are the same as you pass in to $.plot. This loads the images, replaces
the URLs in the data with the corresponding images and calls "callback" when
all images are loaded (or failed loading). In the callback, you can then call
$.plot with the data set. See the included example.

A more low-level helper, $.plot.image.load(urls, callback) is also included.
Given a list of URLs, it calls callback with an object mapping from URL to
Image object when all images are loaded or have failed loading.

The plugin supports these options:

series: {
		images: {
			show: boolean
			anchor: "corner" or "center"
			alpha: [ 0, 1 ]
		}
	}

They can be specified for a specific series:

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

Note that because the data format is different from usual data points, you
can't use images with anything else in a specific data series.

Setting "anchor" to "center" causes the pixels in the image to be anchored at
the corner pixel centers inside of at the pixel corners, effectively letting
half a pixel stick out to each side in the plot.

A possible future direction could be support for tiling for large images (like
Google Maps).

(function ($) {
    var options = {
        series: {
            images: {
                show: false,
                alpha: 1,
                anchor: "corner" // or "center"
            }
        }
    };

$.plot.image = {};

$.plot.image.loadDataImages = function (series, options, callback) {
        var urls = [], points = [];

var defaultShow = options.series.images.show;
        
        $.each(series, function (i, s) {
            if (!(defaultShow || s.images.show))
                return;
            
            if (s.data)
                s = s.data;

$.each(s, function (i, p) {
                if (typeof p[0] == "string") {
                    urls.push(p[0]);
                    points.push(p);
                }
            });
        });

$.plot.image.load(urls, function (loadedImages) {
            $.each(points, function (i, p) {
                var url = p[0];
                if (loadedImages[url])
                    p[0] = loadedImages[url];
            });

callback();
        });
    }
    
    $.plot.image.load = function (urls, callback) {
        var missing = urls.length, loaded = {};
        if (missing == 0)
            callback({});

$.each(urls, function (i, url) {
            var handler = function () {
                --missing;
                
                loaded[url] = this;
                
                if (missing == 0)
                    callback(loaded);
            };

$('<img />').load(handler).error(handler).attr('src', url);
        });
    };
    
    function drawSeries(plot, ctx, series) {
        var plotOffset = plot.getPlotOffset();
        
        if (!series.images || !series.images.show)
            return;
        
        var points = series.datapoints.points,
            ps = series.datapoints.pointsize;
        
        for (var i = 0; i < points.length; i += ps) {
            var img = points[i],
                x1 = points[i + 1], y1 = points[i + 2],
                x2 = points[i + 3], y2 = points[i + 4],
                xaxis = series.xaxis, yaxis = series.yaxis,
                tmp;

// actually we should check img.complete, but it
            // appears to be a somewhat unreliable indicator in
            // IE6 (false even after load event)
            if (!img || img.width <= 0 || img.height <= 0)
                continue;

if (x1 > x2) {
                tmp = x2;
                x2 = x1;
                x1 = tmp;
            }
            if (y1 > y2) {
                tmp = y2;
                y2 = y1;
                y1 = tmp;
            }
            
            // if the anchor is at the center of the pixel, expand the 
            // image by 1/2 pixel in each direction
            if (series.images.anchor == "center") {
                tmp = 0.5 * (x2-x1) / (img.width - 1);
                x1 -= tmp;
                x2 += tmp;
                tmp = 0.5 * (y2-y1) / (img.height - 1);
                y1 -= tmp;
                y2 += tmp;
            }
            
            // clip
            if (x1 == x2 || y1 == y2 ||
                x1 >= xaxis.max || x2 <= xaxis.min ||
                y1 >= yaxis.max || y2 <= yaxis.min)
                continue;

var sx1 = 0, sy1 = 0, sx2 = img.width, sy2 = img.height;
            if (x1 < xaxis.min) {
                sx1 += (sx2 - sx1) * (xaxis.min - x1) / (x2 - x1);
                x1 = xaxis.min;
            }

if (x2 > xaxis.max) {
                sx2 += (sx2 - sx1) * (xaxis.max - x2) / (x2 - x1);
                x2 = xaxis.max;
            }

if (y1 < yaxis.min) {
                sy2 += (sy1 - sy2) * (yaxis.min - y1) / (y2 - y1);
                y1 = yaxis.min;
            }

if (y2 > yaxis.max) {
                sy1 += (sy1 - sy2) * (yaxis.max - y2) / (y2 - y1);
                y2 = yaxis.max;
            }
            
            x1 = xaxis.p2c(x1);
            x2 = xaxis.p2c(x2);
            y1 = yaxis.p2c(y1);
            y2 = yaxis.p2c(y2);
            
            // the transformation may have swapped us
            if (x1 > x2) {
                tmp = x2;
                x2 = x1;
                x1 = tmp;
            }
            if (y1 > y2) {
                tmp = y2;
                y2 = y1;
                y1 = tmp;
            }

tmp = ctx.globalAlpha;
            ctx.globalAlpha *= series.images.alpha;
            ctx.drawImage(img,
                          sx1, sy1, sx2 - sx1, sy2 - sy1,
                          x1 + plotOffset.left, y1 + plotOffset.top,
                          x2 - x1, y2 - y1);
            ctx.globalAlpha = tmp;
        }
    }

function processRawData(plot, series, data, datapoints) {
        if (!series.images.show)
            return;

// format is Image, x1, y1, x2, y2 (opposite corners)
        datapoints.format = [
            { required: true },
            { x: true, number: true, required: true },
            { y: true, number: true, required: true },
            { x: true, number: true, required: true },
            { y: true, number: true, required: true }
        ];
    }
    
    function init(plot) {
        plot.hooks.processRawData.push(processRawData);
        plot.hooks.drawSeries.push(drawSeries);
    }
    
    $.plot.plugins.push({
        init: init,
        options: options,
        name: 'image',
        version: '1.1'
    });
})(jQuery);

cmd: