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Adds ImageData set support for legacy safari

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This commit is contained in:
Yury Delendik 2014-07-22 11:40:32 -05:00
parent 53320ce734
commit 561fc8f98b
1 changed files with 11 additions and 11 deletions
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20
web/compatibility.js
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@ -481,7 +481,7 @@ if (typeof PDFJS === 'undefined') {
}
})();
// Support: IE<11, Chrome<21, Android<4.4
// Support: IE<11, Chrome<21, Android<4.4, Safari<6
(function checkSetPresenceInImageData() {
// IE < 11 will use window.CanvasPixelArray which lacks set function.
if (window.CanvasPixelArray) {
@ -495,21 +495,21 @@ if (typeof PDFJS === 'undefined') {
} else {
// Old Chrome and Android use an inaccessible CanvasPixelArray prototype.
// Because we cannot feature detect it, we rely on user agent parsing.
var polyfill = false;
var polyfill = false, versionMatch;
if (navigator.userAgent.indexOf('Chrom') >= 0) {
var versionMatch = navigator.userAgent.match(/Chrom(e|ium)\/([0-9]+)\./);
if (versionMatch && parseInt(versionMatch[2]) < 21) {
versionMatch = navigator.userAgent.match(/Chrom(e|ium)\/([0-9]+)\./);
// Chrome < 21 lacks the set function.
polyfill = true;
}
polyfill = versionMatch && parseInt(versionMatch[2]) < 21;
} else if (navigator.userAgent.indexOf('Android') >= 0) {
// Android < 4.4 lacks the set function.
// Android >= 4.4 will contain Chrome in the user agent,
// thus pass the Chrome check above and not reach this block.
var isOldAndroid = /Android\s[0-4][^\d]/g.test(navigator.userAgent);
if (isOldAndroid) {
polyfill = true;
}
polyfill = /Android\s[0-4][^\d]/g.test(navigator.userAgent);
} else if (navigator.userAgent.indexOf('Safari') >= 0) {
versionMatch = navigator.userAgent.
match(/Version\/([0-9]+)\.([0-9]+)\.([0-9]+) Safari\//);
// Safari < 6 lacks the set function.
polyfill = versionMatch && parseInt(versionMatch[1]) < 6;
}
if (polyfill) {