ZenBrowserMirrors/pdf.js
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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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14
src/display/canvas.js
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@ -36,7 +36,6 @@ var IDENTITY_MATRIX = sharedUtil.IDENTITY_MATRIX;
var ImageKind = sharedUtil.ImageKind;
var OPS = sharedUtil.OPS;
var TextRenderingMode = sharedUtil.TextRenderingMode;
var Uint32ArrayView = sharedUtil.Uint32ArrayView;
var Util = sharedUtil.Util;
var assert = sharedUtil.assert;
var info = sharedUtil.info;
@ -49,7 +48,6 @@ var warn = sharedUtil.warn;
var TilingPattern = displayPatternHelper.TilingPattern;
var getShadingPatternFromIR = displayPatternHelper.getShadingPatternFromIR;
var WebGLUtils = displayWebGL.WebGLUtils;
var hasCanvasTypedArrays = displayDOMUtils.hasCanvasTypedArrays;
// <canvas> contexts store most of the state we need natively.
// However, PDF needs a bit more state, which we store here.
@ -68,12 +66,6 @@ var MAX_SIZE_TO_COMPILE = 1000;
var FULL_CHUNK_HEIGHT = 16;
var HasCanvasTypedArraysCached = {
get value() {
return shadow(HasCanvasTypedArraysCached, 'value', hasCanvasTypedArrays());
}
};
var IsLittleEndianCached = {
get value() {
return shadow(IsLittleEndianCached, 'value', isLittleEndian());
@ -510,13 +502,11 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
if (imgData.kind === ImageKind.GRAYSCALE_1BPP) {
// Grayscale, 1 bit per pixel (i.e. black-and-white).
var srcLength = src.byteLength;
var dest32 = HasCanvasTypedArraysCached.value ?
new Uint32Array(dest.buffer) : new Uint32ArrayView(dest);
var dest32 = new Uint32Array(dest.buffer, 0, dest.byteLength >> 2);
var dest32DataLength = dest32.length;
var fullSrcDiff = (width + 7) >> 3;
var white = 0xFFFFFFFF;
var black = (IsLittleEndianCached.value ||
!HasCanvasTypedArraysCached.value) ? 0xFF000000 : 0x000000FF;
var black = IsLittleEndianCached.value ? 0xFF000000 : 0x000000FF;
for (i = 0; i < totalChunks; i++) {
thisChunkHeight =
(i < fullChunks) ? FULL_CHUNK_HEIGHT : partialChunkHeight;