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@ -4,6 +4,7 @@ define([
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var Nacl = window.nacl;
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var Thumb = {
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dimension: 100,
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padDimension: 200
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};
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var supportedTypes = [
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@ -46,25 +47,28 @@ define([
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var h = type === 'video' ? img.videoHeight : img.height;
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var w = type === 'video' ? img.videoWidth : img.width;
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var dim = Thumb.dimension;
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var dim = type === 'pad' ? Thumb.padDimension : Thumb.dimension;
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// if the image is too small, don't bother making a thumbnail
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if (h <= dim && w <= dim) {
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/*if (h <= dim && w <= dim) {
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return {
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x: Math.floor((dim - w) / 2),
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w: w,
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y: Math.floor((dim - h) / 2),
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h : h
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};
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}
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}*/
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// the image is taller than it is wide, so scale to that.
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var r = dim / (h > w? h: w); // ratio
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if (h <= dim && w <= dim) { r = 1; }
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var d;
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if (h > w) {
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var newW = Math.floor(w*r);
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d = Math.floor((dim - newW) / 2);
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return {
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dim: dim,
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x: d,
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w: newW,
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y: 0,
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@ -74,6 +78,7 @@ define([
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var newH = Math.floor(h*r);
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d = Math.floor((dim - newH) / 2);
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return {
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dim: dim,
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x: 0,
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w: dim,
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y: d,
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@ -88,8 +93,8 @@ define([
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var c2 = document.createElement('canvas');
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if (!D) { return void cb('ERROR'); }
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c2.width = Thumb.dimension;
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c2.height = Thumb.dimension;
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c2.width = D.dim;
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c2.height = D.dim;
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var ctx = c2.getContext('2d');
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ctx.drawImage(canvas, D.x, D.y, D.w, D.h);
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@ -147,7 +152,8 @@ define([
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PDFJS.getDocument(url).promise
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.then(function (doc) {
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return doc.getPage(1).then(makeThumb).then(function (canvas) {
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cb(void 0, canvas.toDataURL());
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var D = getResizedDimensions(canvas, 'pdf');
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Thumb.fromCanvas(canvas, D, cb);
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});
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}).catch(function () {
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cb('ERROR');
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@ -165,17 +171,20 @@ define([
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};
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window.html2canvas = undefined;
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Thumb.fromDOM = function (element, cb) {
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Thumb.fromDOM = function (opts, cb) {
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var element = opts.getContainer();
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var todo = function () {
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html2canvas(element, {
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if (opts.filter) { opts.filter(element, true); }
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window.html2canvas(element, {
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allowTaint: true,
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onrendered: function (canvas) {
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var D = getResizedDimensions(canvas, 'image');
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if (opts.filter) { opts.filter(element, false); }
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var D = getResizedDimensions(canvas, 'pad');
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Thumb.fromCanvas(canvas, D, cb);
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}
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});
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};
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if (html2canvas) { return void todo(); }
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if (window.html2canvas) { return void todo(); }
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require(['/bower_components/html2canvas/build/html2canvas.min.js'], todo);
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};
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