Merge bb85cfd into 102a721

.svgo.yml

@@ -41,6 +41,7 @@ plugins:
   - removeHiddenElems
   - removeEmptyText
   - convertShapeToPath
+  - removeOffCanvasPaths
   - moveElemsAttrsToGroup
   - moveGroupAttrsToElems
   - collapseGroups

plugins/removeOffCanvasPaths.js

@@ -0,0 +1,76 @@
+'use strict';
+
+exports.type = 'perItem';
+
+exports.active = false;
+
+exports.description = 'removes elements that are drawn outside of the viewbox (disabled by default)';
+
+var SVGO       = require('../lib/svgo.js'),
+	_path      = require('./_path.js'),
+	intersects = _path.intersects,
+	path2js    = _path.path2js,
+	viewBoxJS;
+
+/**
+ * Remove elements that are drawn outside of the viewbox.
+ *
+ * @param {Object} item current iteration item
+ * @return {Boolean} if false, item will be filtered out
+ *
+ * @author JoshyPHP
+ */
+exports.fn = function(item) {
+
+	if (item.isElem('path') && typeof viewBoxJS !== 'undefined')
+	{
+		return intersects(viewBoxJS, path2js(item));
+	}
+	if (item.isElem('svg'))
+	{
+		viewBoxJS = getViewBoxJS(item);
+	}
+
+	return true;
+};
+
+/**
+ * Compute the JS representation of the viewbox's path.
+ *
+ * @param {Object} svg svg element item
+ * @return {Object} JS representation, or undefined
+ */
+function getViewBoxJS(svg)
+{
+	var viewbox = '';
+	if (svg.hasAttr('viewBox'))
+	{
+		// Remove commas and plus signs, normalize and trim whitespace
+		viewbox = svg.attr('viewBox').value.replace(/[,+]|px/g, ' ').replace(/\s+/g, ' ').replace(/^\s*|\s*$/g, '');
+	}
+	else if (svg.hasAttr('height') && svg.hasAttr('width'))
+	{
+		viewbox = '0 0 ' + svg.attr('width').value + ' ' + svg.attr('height').value;
+	}
+
+	// Test that the dimensions are 4 values separated by space
+	var m = /^(-?\d*\.?\d+) (-?\d*\.?\d+) (\d*\.?\d+) (\d*\.?\d+)$/.exec(viewbox);
+	if (!m)
+	{
+		return undefined;
+	}
+
+	var path = new SVGO().createContentItem({
+		elem:   'path',
+		prefix: '',
+		local:  'path'
+	});
+	path.addAttr({
+		name:   'd',
+		prefix: '',
+		local:  'd',
+		value:  'M' + m[1] + ' ' + m[2] + 'h' + m[3] + 'v' + m[4] + 'H' + m[1] + 'z'
+	});
+
+	return path2js(path);
+}