From 30e00bc5737bec7396505b54125c167f5a365fde Mon Sep 17 00:00:00 2001
From: "Manas (prometheansacrifice)" <harlequinsguitar@gmail.com>
Date: Tue, 11 Mar 2014 08:48:37 +0530
Subject: [PATCH] Removing set-presence-in-ImageData check from canvas.js
---
src/display/canvas.js | 13 ++++---------
web/compatibility.js | 12 ++++++++++++
2 files changed, 16 insertions(+), 9 deletions(-)
diff --git a/src/display/canvas.js b/src/display/canvas.js
index f9ca1721b..00153986a 100644
--- a/src/display/canvas.js
+++ b/src/display/canvas.js
@@ -507,20 +507,15 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
} else if (imgData.kind === ImageKind.RGBA_32BPP) {
// RGBA, 32-bits per pixel.
- var haveSetAndSubarray = 'set' in dest && 'subarray' in src;
for (var i = 0; i < totalChunks; i++) {
var thisChunkHeight =
(i < fullChunks) ? fullChunkHeight : partialChunkHeight;
var elemsInThisChunk = imgData.width * thisChunkHeight * 4;
- if (haveSetAndSubarray) {
- dest.set(src.subarray(srcPos, srcPos + elemsInThisChunk));
- srcPos += elemsInThisChunk;
- } else {
- for (var j = 0; j < elemsInThisChunk; j++) {
- dest[j] = src[srcPos++];
- }
- }
+
+ dest.set(src.subarray(srcPos, srcPos + elemsInThisChunk));
+ srcPos += elemsInThisChunk;
+
ctx.putImageData(chunkImgData, 0, i * fullChunkHeight);
}
diff --git a/web/compatibility.js b/web/compatibility.js
index 64ce745bd..aceca91fa 100644
--- a/web/compatibility.js
+++ b/web/compatibility.js
@@ -493,3 +493,15 @@ if (typeof PDFJS === 'undefined') {
PDFJS.disableHistory = true;
}
})();
+
+(function checkSetPresenceInImageData() {
+ if (window.CanvasPixelArray) {
+ if (typeof window.CanvasPixelArray.prototype.set !== 'function') {
+ window.CanvasPixelArray.prototype.set = function(arr) {
+ for (var i = 0, ii = this.length; i < ii; i++) {
+ this[i] = arr[i];
+ }
+ };
+ }
+ }
+})();