metamaps--metamaps/script/phantomjs-save-screenshot.js
Devin Howard c6c05085ad Added phantomjs script to save an image - this doesn't totally work yet, it has a error with famous
Added worker process to call the phantomjs script in app/workers
Added hook in models/map.rb to call the worker
Added calls to map.touch in mappings_controller.rb so it would get triggered correctly - I'm not sure how this will proceed moving forward
2014-10-07 19:11:55 -04:00

55 lines
1.5 KiB
JavaScript
Executable file

//parse arguments passed from command line (or more likely, from rails)
var system = require('system');
var args = system.args;
if (args.length <= 1) {
phantom.exit();
throw new Error("no arguments supplied on command line");
}//if
//configurable variables - CHANGE ME
var mapID = args[1];
var url = 'http://localhost:3000/maps/' + mapID;
var width = 400;
var height = 400;
var thumbsDirRelative = 'app/assets/images/map_thumbnails';
//set up writing to filesystem
var fs = require('fs');
var thumbsDirectory = fs.workingDirectory + '/' + thumbsDirRelative;
if (!fs.isDirectory(thumbsDirectory)) {
fs.makeDirectory(thumbsDirectory);
}//if
//set up page and the area we'll render as a PNG
var page = require('webpage').create();
page.viewportSize = {
width: width,
height: height
};
page.clipRect = {
top: 32,
left: 32,
width: width - 32,
height: height - 32
};
page.open(url, function (status) {
if (status === 'success') {
//since this isn't evaluateAsync, it should also ensure the asynchronous
//js stuff is loaded too, hopefully?
page.evaluate(function() {
$(document).ready(function(){
$('.upperLeftUI, .upperRightUI, .mapControls, .infoAndHelp, #barometer_tab, .footer').hide();
});//document.ready
});//page.evaluate
//render page into map_thumbnails directory
var filename = thumbsDirectory + '/map' + mapID + '.png';
page.render(filename, 'PNG');
} else {
//failed to load
}//if
phantom.exit();
});