From 96b9bb68e309eb6af5e20fef8ca51789ab72532a Mon Sep 17 00:00:00 2001
From: hacksalot <hacksalot@indevious.com>
Date: Thu, 7 Jan 2016 17:53:42 -0500
Subject: [PATCH] Introduce Phantom.js rasterizer script.

Via
https://raw.githubusercontent.com/ariya/phantomjs/master/examples/rasterize.js.
---
 src/utils/rasterize.js | 51 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 src/utils/rasterize.js

diff --git a/src/utils/rasterize.js b/src/utils/rasterize.js
new file mode 100644
index 0000000..cd869e5
--- /dev/null
+++ b/src/utils/rasterize.js
@@ -0,0 +1,51 @@
+// Exemplar script for generating documents with Phantom.js.
+// https://raw.githubusercontent.com/ariya/phantomjs/master/examples/rasterize.js
+"use strict";
+var page = require('webpage').create(),
+  system = require('system'),
+  address, output, size;
+
+if (system.args.length < 3 || system.args.length > 5) {
+  console.log('Usage: rasterize.js URL filename [paperwidth*paperheight|paperformat] [zoom]');
+  console.log('  paper (pdf output) examples: "5in*7.5in", "10cm*20cm", "A4", "Letter"');
+  console.log('  image (png/jpg output) examples: "1920px" entire page, window width 1920px');
+  console.log('                                   "800px*600px" window, clipped to 800x600');
+  phantom.exit(1);
+} else {
+  address = system.args[1];
+  output = system.args[2];
+  page.viewportSize = { width: 600, height: 600 };
+  if (system.args.length > 3 && system.args[2].substr(-4) === ".pdf") {
+    size = system.args[3].split('*');
+    page.paperSize = size.length === 2 ? { width: size[0], height: size[1], margin: '0px' }
+                                         : { format: system.args[3], orientation: 'portrait', margin: '1cm' };
+  } else if (system.args.length > 3 && system.args[3].substr(-2) === "px") {
+    size = system.args[3].split('*');
+    if (size.length === 2) {
+      pageWidth = parseInt(size[0], 10);
+      pageHeight = parseInt(size[1], 10);
+      page.viewportSize = { width: pageWidth, height: pageHeight };
+      page.clipRect = { top: 0, left: 0, width: pageWidth, height: pageHeight };
+    } else {
+      console.log("size:", system.args[3]);
+      pageWidth = parseInt(system.args[3], 10);
+      pageHeight = parseInt(pageWidth * 3/4, 10); // it's as good an assumption as any
+      console.log ("pageHeight:",pageHeight);
+      page.viewportSize = { width: pageWidth, height: pageHeight };
+    }
+  }
+  if (system.args.length > 4) {
+    page.zoomFactor = system.args[4];
+  }
+  page.open(address, function (status) {
+    if (status !== 'success') {
+      console.log('Unable to load the address!');
+      phantom.exit(1);
+    } else {
+      window.setTimeout(function () {
+        page.render(output);
+        phantom.exit();
+      }, 200);
+    }
+  });
+}