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Moves Uint32ArrayView and hasCanvasTypedArrays into compatibility.js.

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This commit is contained in:
Yury Delendik 2017-04-13 13:16:35 -05:00
parent 74b31ab18f
commit 30bee9fe0c
7 changed files with 83 additions and 110 deletions
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50
src/shared/util.js
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@ -618,10 +618,10 @@ function readUint32(data, offset) {
// Lazy test the endianness of the platform
// NOTE: This will be 'true' for simulated TypedArrays
function isLittleEndian() {
var buffer8 = new Uint8Array(2);
var buffer8 = new Uint8Array(4);
buffer8[0] = 1;
var buffer16 = new Uint16Array(buffer8.buffer);
return (buffer16[0] === 1);
var view32 = new Uint32Array(buffer8.buffer, 0, 1);
return (view32[0] === 1);
}
// Checks if it's possible to eval JS expressions.
@ -634,50 +634,6 @@ function isEvalSupported() {
}
}
if (typeof PDFJSDev === 'undefined' ||
!PDFJSDev.test('FIREFOX || MOZCENTRAL || CHROME')) {
var Uint32ArrayView = (function Uint32ArrayViewClosure() {
function Uint32ArrayView(buffer, length) {
this.buffer = buffer;
this.byteLength = buffer.length;
this.length = length === undefined ? (this.byteLength >> 2) : length;
ensureUint32ArrayViewProps(this.length);
}
Uint32ArrayView.prototype = Object.create(null);
var uint32ArrayViewSetters = 0;
function createUint32ArrayProp(index) {
return {
get: function () {
var buffer = this.buffer, offset = index << 2;
return (buffer[offset] | (buffer[offset + 1] << 8) |
(buffer[offset + 2] << 16) | (buffer[offset + 3] << 24)) >>> 0;
},
set: function (value) {
var buffer = this.buffer, offset = index << 2;
buffer[offset] = value & 255;
buffer[offset + 1] = (value >> 8) & 255;
buffer[offset + 2] = (value >> 16) & 255;
buffer[offset + 3] = (value >>> 24) & 255;
}
};
}
function ensureUint32ArrayViewProps(length) {
while (uint32ArrayViewSetters < length) {
Object.defineProperty(Uint32ArrayView.prototype,
uint32ArrayViewSetters,
createUint32ArrayProp(uint32ArrayViewSetters));
uint32ArrayViewSetters++;
}
}
return Uint32ArrayView;
})();
exports.Uint32ArrayView = Uint32ArrayView;
}
var IDENTITY_MATRIX = [1, 0, 0, 1, 0, 0];
var Util = (function UtilClosure() {