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384 lines
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<a href="../index.html">all files</a> / <a href="index.html">src/</a> SVGPathDataEncoder.js
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">'use strict';
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// Encode SVG PathData
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// http://www.w3.org/TR/SVG/paths.html#PathDataBNF
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// Access to SVGPathData constructor
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var SVGPathData = require('./SVGPathData.js');
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// TransformStream inherance required modules
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var TransformStream = require('readable-stream').Transform;
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var util = require('util');
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// Private consts : Char groups
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var WSP = ' ';
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// Inherit of writeable stream
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util.inherits(SVGPathDataEncoder, TransformStream);
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// Constructor
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function SVGPathDataEncoder(options) {
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// Ensure new were used
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if(!(this instanceof SVGPathDataEncoder)) {
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return new SVGPathDataEncoder(options);
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}
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// Parent constructor
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TransformStream.call(this, {
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objectMode: true,
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});
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// Setting objectMode separately
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this._writableState.objectMode = true;
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this._readableState.objectMode = false;
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}
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// Read method
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SVGPathDataEncoder.prototype._transform = function(commands, encoding, done) {
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var str = '';
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var i;
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var j;
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if(!(commands instanceof Array)) {
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commands = [commands];
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}
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for(i = 0, j = commands.length; i < j; i++) {
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// Horizontal move to command
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if(commands[i].type === SVGPathData.CLOSE_PATH) {
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str += 'z';
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continue;
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// Horizontal move to command
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} else if(commands[i].type === SVGPathData.HORIZ_LINE_TO) {
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str += (commands[i].relative ? 'h' : 'H') +
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commands[i].x;
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// Vertical move to command
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} else if(commands[i].type === SVGPathData.VERT_LINE_TO) {
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str += (commands[i].relative ? 'v' : 'V') +
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commands[i].y;
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// Move to command
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} else if(commands[i].type === SVGPathData.MOVE_TO) {
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str += (commands[i].relative ? 'm' : 'M') +
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commands[i].x + WSP + commands[i].y;
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// Line to command
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} else if(commands[i].type === SVGPathData.LINE_TO) {
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str += (commands[i].relative ? 'l' : 'L') +
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commands[i].x + WSP + commands[i].y;
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// Curve to command
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} else if(commands[i].type === SVGPathData.CURVE_TO) {
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str += (commands[i].relative ? 'c' : 'C') +
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commands[i].x2 + WSP + commands[i].y2 +
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WSP + commands[i].x1 + WSP + commands[i].y1 +
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WSP + commands[i].x + WSP + commands[i].y;
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// Smooth curve to command
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} else if(commands[i].type === SVGPathData.SMOOTH_CURVE_TO) {
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str += (commands[i].relative ? 's' : 'S') +
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commands[i].x2 + WSP + commands[i].y2 +
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WSP + commands[i].x + WSP + commands[i].y;
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// Quadratic bezier curve to command
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} else if(commands[i].type === SVGPathData.QUAD_TO) {
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str += (commands[i].relative ? 'q' : 'Q') +
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commands[i].x1 + WSP + commands[i].y1 +
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WSP + commands[i].x + WSP + commands[i].y;
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// Smooth quadratic bezier curve to command
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} else if(commands[i].type === SVGPathData.SMOOTH_QUAD_TO) {
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str += (commands[i].relative ? 't' : 'T') +
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commands[i].x + WSP + commands[i].y;
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// Elliptic arc command
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} else if(commands[i].type === SVGPathData.ARC) {
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str += (commands[i].relative ? 'a' : 'A') +
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commands[i].rX + WSP + commands[i].rY +
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WSP + commands[i].xRot +
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WSP + commands[i].lArcFlag + WSP + commands[i].sweepFlag +
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WSP + commands[i].x + WSP + commands[i].y;
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// Unkown command
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} else {
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this.emit('error', new Error('Unexpected command type "' +
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commands[i].type + '" at index ' + i + '.'));
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}
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}
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this.push(new Buffer(str, 'utf8'));
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done();
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};
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module.exports = SVGPathDataEncoder;
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</pre></td></tr>
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Code coverage
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generated by <a href="http://istanbul-js.org/" target="_blank">istanbul</a> at Mon Nov 07 2016 15:21:32 GMT+0100 (CET)
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