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39 lines
694 B
39 lines
694 B
15 years ago
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/*!
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* Canvas - PNGStream
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* Copyright(c) 2010 TJ Holowaychuk <tj@vision-media.ca>
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* MIT Licensed
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*/
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/**
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* Module dependencies.
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*/
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var EventEmitter = require('events').EventEmitter;
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/**
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* Initialize a `PNGStream` with the given `canvas`.
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*
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* @param {Canvas} canvas
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* @api public
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*/
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var PNGStream = module.exports = function PNGStream(canvas) {
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var self = this;
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this.canvas = canvas;
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process.nextTick(function(){
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canvas.streamPNG(function(chunk, len){
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if (len) {
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self.emit('data', chunk, len);
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} else {
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self.emit('end');
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}
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});
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});
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};
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/**
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* Inherit from `EventEmitter`.
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*/
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PNGStream.prototype.__proto__ = EventEmitter.prototype;
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