Sakurai/pdf.js
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Added #getFingerprint method to PDFDocModel

Browse Source
This commit is contained in:
Saebekassebil 2011-12-22 23:44:42 +01:00
parent d44f9f2074
commit 0de0e92bc4
2 changed files with 20 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
src/core.js
View File

@ -542,6 +542,21 @@ var PDFDocModel = (function PDFDocModelClosure() {
// shadow the prototype getter // shadow the prototype getter
return shadow(this, 'numPages', num); return shadow(this, 'numPages', num);
}, },
getFingerprint: function pdfDocGetFingerprint() {
if(this.fileID) {
return this.fileID;
} else {
// If we got no fileID, then we generate one, from the first 100 bytes of PDF
var data = this.stream.bytes.subarray(0, 100);
var hash = calculateMD5(data, 0, data.length);
var strHash = '';
for(var i = 0, length = hash.length; i < length; i++) {
strHash += Number(hash[i]).toString(16);
}
return strHash;
}
},
getPage: function pdfDocGetPage(n) { getPage: function pdfDocGetPage(n) {
return this.catalog.getPage(n); return this.catalog.getPage(n);
} }
@ -568,7 +583,7 @@ var PDFDoc = (function PDFDocClosure() {
this.data = data; this.data = data;
this.stream = stream; this.stream = stream;
this.pdf = new PDFDocModel(stream); this.pdf = new PDFDocModel(stream);
this.fileID = this.pdf.fileID; this.fingerprint = this.pdf.getFingerprint();
this.catalog = this.pdf.catalog; this.catalog = this.pdf.catalog;
this.objs = new PDFObjects(); this.objs = new PDFObjects();

8
web/viewer.js
View File

@ -347,7 +347,7 @@ var PDFView = {
pagesRefMap[pageRef.num + ' ' + pageRef.gen + ' R'] = i; pagesRefMap[pageRef.num + ' ' + pageRef.gen + ' R'] = i;
} }
var id = pdf.fileID; var id = pdf.fingerprint;
if (id) { if (id) {
var scroll = Settings.get(id + '.scroll', -1); var scroll = Settings.get(id + '.scroll', -1);
if (scroll != -1) { if (scroll != -1) {
@ -895,9 +895,9 @@ function updateViewarea() {
window.addEventListener('scroll', function webViewerScroll(evt) { window.addEventListener('scroll', function webViewerScroll(evt) {
updateViewarea(); updateViewarea();
var fileID; var id;
if((fileID = PDFView.pages[0].content.pdf.fileID)) { if((id = PDFView.pages[0].content.pdf.fingerprint)) {
Settings.set(fileID+'.scroll', window.pageYOffset); Settings.set(id+'.scroll', window.pageYOffset);
} }
}, true); }, true);