Merge remote-tracking branch 'upstream/master'
This commit is contained in:
Kalervo Kujala
commit
b88c42699e
70
README.md
70
README.md
@ -27,6 +27,32 @@ For an online demo, visit:
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This demo provides an interactive interface for displaying and browsing PDFs
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using the pdf.js API.
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**Getting the code**
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To get a local copy of the current code, clone it using git:
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```bash
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git clone git://github.com/andreasgal/pdf.js.git pdfjs
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cd pdfjs
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```
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Next, you need to start a local web server as some browsers don't allow opening
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PDF files for a file:// url:
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```bash
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make server
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```
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If everything worked out, you can now serve
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http://localhost:8888/web/viewer.html
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You can also view all the test pdf files on the right side serving
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http://localhost:8888/test/pdfs/?frame
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**Hello world**
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For a "hello world" example, take a look at:
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@ -38,6 +64,20 @@ in a custom project.
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## Contributing
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pdf.js is a community-driver project, so contributors are always welcome.
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Simply fork our repo and contribute away. A great place to start is our
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open issues. For better consistency and long-term stability, please do look around the
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code and try to follow our conventions.
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If you __don't want to hack__ on the project or have short spare times, you still
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can help! Just open PDFs in the
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[online demo](http://andreasgal.github.com/pdf.js/web/viewer.html) and report
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any breakage in rendering.
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## Running the Tests
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pdf.js comes with browser-level regression tests that allow one to probe
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@ -64,16 +104,6 @@ images. The test type `load` simply tests whether the file loads without
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raising any errors.
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## Contributing
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pdf.js is a community-driver project, so contributors are always welcome.
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Simply fork our repo and contribute away. A great place to start is our
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open issues.
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For better consistency and long-term stability, please do look around the
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code and try to follow our conventions.
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## Additional resources
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Our demo site is here:
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@ -97,8 +127,28 @@ Join our mailing list:
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Subscribe either using lists.mozilla.org or Google Groups:
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https://lists.mozilla.org/listinfo/dev-pdf-js
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https://groups.google.com/group/mozilla.dev.pdf-js/topics
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Talk to us on IRC:
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#pdfjs on irc.mozilla.org
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## Additional resources to understand the structure of PDF
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A really basic overview of PDF is described here:
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http://partners.adobe.com/public/developer/en/livecycle/lc_pdf_overview_format.pdf
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A more detailed file example:
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http://gnupdf.org/Introduction_to_PDF
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The PDF specification itself is an ISO and not free available. However, there is
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a "PDF Reference" from Adobe:
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http://wwwimages.adobe.com/www.adobe.com/content/dam/Adobe/en/devnet/pdf/pdfs/pdf_reference_1-7.pdf
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Recommanded chapters to read: "2. Overview", "3.4 File Structure",
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"4.1 Graphics Objects" that lists the PDF commands.
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10
crypto.js
10
crypto.js
@ -45,7 +45,7 @@ var ARCFourCipher = (function aRCFourCipher() {
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return constructor;
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})();
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var md5 = (function md5Md5() {
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var calculateMD5 = (function calculateMD5() {
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var r = new Uint8Array([
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7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22,
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5, 9, 14, 20, 5, 9, 14, 20, 5, 9, 14, 20, 5, 9, 14, 20,
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@ -452,11 +452,11 @@ var CipherTransformFactory = (function cipherTransformFactory() {
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hashData[i++] = 0xFF;
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hashData[i++] = 0xFF;
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}
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var hash = md5(hashData, 0, i);
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var hash = calculateMD5(hashData, 0, i);
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var keyLengthInBytes = keyLength >> 3;
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if (revision >= 3) {
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for (j = 0; j < 50; ++j) {
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hash = md5(hash, 0, keyLengthInBytes);
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hash = calculateMD5(hash, 0, keyLengthInBytes);
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}
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}
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var encryptionKey = hash.subarray(0, keyLengthInBytes);
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@ -469,7 +469,7 @@ var CipherTransformFactory = (function cipherTransformFactory() {
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for (j = 0, n = fileId.length; j < n; ++j)
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hashData[i++] = fileId[j];
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cipher = new ARCFourCipher(encryptionKey);
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var checkData = cipher.encryptBlock(md5(hashData, 0, i));
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var checkData = cipher.encryptBlock(calculateMD5(hashData, 0, i));
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n = encryptionKey.length;
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var derrivedKey = new Uint8Array(n), k;
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for (j = 1; j <= 19; ++j) {
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@ -544,7 +544,7 @@ var CipherTransformFactory = (function cipherTransformFactory() {
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key[i++] = 0x6C;
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key[i++] = 0x54;
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}
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var hash = md5(key, 0, i);
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var hash = calculateMD5(key, 0, i);
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return hash.subarray(0, Math.min(encryptionKey.length + 5, 16));
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}
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80
pdf.js
80
pdf.js
@ -3324,8 +3324,10 @@ var Page = (function pagePage() {
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},
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get mediaBox() {
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var obj = this.inheritPageProp('MediaBox');
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return shadow(this, 'mediaBox',
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((IsArray(obj) && obj.length == 4) ? obj : null));
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// Reset invalid media box to letter size.
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if (!IsArray(obj) || obj.length !== 4)
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obj = [0, 0, 612, 792];
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return shadow(this, 'mediaBox', obj);
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},
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get view() {
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var obj = this.inheritPageProp('CropBox');
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@ -4819,7 +4821,65 @@ var CanvasGraphics = (function canvasGraphics() {
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TODO('set flatness: ' + flatness);
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},
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setGState: function canvasGraphicsSetGState(dictName) {
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TODO('set graphics state from dict: ' + dictName);
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var extGState = this.xref.fetchIfRef(this.res.get('ExtGState'));
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if (IsDict(extGState) && extGState.has(dictName.name)) {
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var gsState = this.xref.fetchIfRef(extGState.get(dictName.name));
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var self = this;
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gsState.forEach(function(key, value) {
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switch (key) {
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case 'Type':
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break;
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case 'LW':
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self.setLineWidth(value);
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break;
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case 'LC':
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self.setLineCap(value);
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break;
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case 'LJ':
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self.setLineJoin(value);
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break;
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case 'ML':
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self.setMiterLimit(value);
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break;
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case 'D':
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self.setDash(value[0], value[1]);
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break;
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case 'RI':
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self.setRenderingIntent(value);
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break;
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case 'FL':
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self.setFlatness(value);
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break;
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case 'Font':
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self.setFont(value[0], value[1]);
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break;
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case 'OP':
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case 'op':
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case 'OPM':
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case 'BG':
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case 'BG2':
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case 'UCR':
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case 'UCR2':
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case 'TR':
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case 'TR2':
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case 'HT':
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case 'SM':
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case 'SA':
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case 'BM':
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case 'SMask':
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case 'CA':
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case 'ca':
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case 'AIS':
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case 'TK':
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TODO('graphic state operator ' + key);
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break;
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default:
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warn('Unknown graphic state operator ' + key);
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break;
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}
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});
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}
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},
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save: function canvasGraphicsSave() {
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this.ctx.save();
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@ -4986,11 +5046,17 @@ var CanvasGraphics = (function canvasGraphics() {
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this.current.leading = -leading;
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},
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setFont: function canvasGraphicsSetFont(fontRef, size) {
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var font = this.xref.fetchIfRef(this.res.get('Font'));
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if (!IsDict(font))
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return;
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var font;
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// the tf command uses a name, but graphics state uses a reference
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if (IsName(fontRef)) {
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font = this.xref.fetchIfRef(this.res.get('Font'));
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if (!IsDict(font))
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return;
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font = font.get(fontRef.name);
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font = font.get(fontRef.name);
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} else if (IsRef(fontRef)) {
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font = fontRef;
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}
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font = this.xref.fetchIfRef(font);
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if (!font)
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error('Referenced font is not found');
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@ -50,7 +50,21 @@ function load() {
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r.send(null);
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}
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function cleanup() {
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var styleSheet = document.styleSheets[0];
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if (styleSheet) {
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while (styleSheet.cssRules.length > 0)
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styleSheet.deleteRule(0);
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}
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var guard = document.getElementById('content-end');
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var body = document.body;
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while (body.lastChild !== guard)
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body.removeChild(body.lastChild);
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}
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function nextTask() {
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cleanup();
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if (currentTaskIdx == manifest.length) {
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return done();
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}
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105
test/pdfs/extgstate.pdf
Normal file
105
test/pdfs/extgstate.pdf
Normal file
@ -0,0 +1,105 @@
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%PDF-1.4
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%öäüß
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1 0 obj
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<<
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/Type /Catalog
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/Version /1.4
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/Pages 2 0 R
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>>
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endobj
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2 0 obj
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<<
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/Type /Pages
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/Kids [3 0 R]
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/Count 1
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>>
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endobj
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3 0 obj
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<<
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/Type /Page
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/MediaBox [0 0 612 792]
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/Resources 4 0 R
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/Parent 2 0 R
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/Contents 5 0 R
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>>
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endobj
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4 0 obj
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<<
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/ExtGState 6 0 R
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/Font 7 0 R
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/XObject <<
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>>
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>>
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endobj
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5 0 obj
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<<
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/Length 8 0 R
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>>
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stream
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/GS1 gs
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/F0 12 Tf
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BT
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100 700 Td
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(I should be courier!) Tj
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ET
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50 600 m
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400 600 l
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S
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endstream
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endobj
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6 0 obj
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<<
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/GS1 9 0 R
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>>
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endobj
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7 0 obj
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<<
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/F0 10 0 R
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>>
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endobj
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8 0 obj
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82
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endobj
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9 0 obj
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<<
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/Type /ExtGState
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/LW 10
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/LC 1
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/LJ 2
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/ML 0.3000000119
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/D [[0.0917000026 183.3300018311]
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0]
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/Font [10 0 R 36]
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>>
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endobj
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10 0 obj
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<<
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/Type /Font
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/Subtype /Type1
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/BaseFont /Courier
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/Encoding /WinAnsiEncoding
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>>
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endobj
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xref
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0 11
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0000000000 65535 f
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0000000015 00000 n
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0000000078 00000 n
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0000000135 00000 n
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0000000239 00000 n
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0000000304 00000 n
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0000000441 00000 n
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0000000473 00000 n
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0000000505 00000 n
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0000000523 00000 n
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0000000653 00000 n
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trailer
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<<
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/Root 1 0 R
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/ID [<BFFF29B7D1C75EC69AC080682C2AFC5B> <BFFF29B7D1C75EC69AC080682C2AFC5B>]
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/Size 11
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>>
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startxref
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749
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%%EOF
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@ -151,5 +151,11 @@
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"link": true,
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"rounds": 1,
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"type": "load"
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},
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{ "id": "extgstate",
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"file": "pdfs/extgstate.pdf",
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"link": false,
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"rounds": 1,
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"type": "load"
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}
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]
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@ -14,6 +14,7 @@
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<body onload="load();">
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||||
<pre style="width:800; height:800; overflow: scroll;"id="stdout"></pre>
|
||||
<p>Inflight requests: <span id="inFlightCount"></span></p>
|
||||
<div id="content-end"><!-- cleanup() guard --></div>
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||||
</body>
|
||||
|
||||
</html>
|
||||
|
||||
Loading…
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Reference in New Issue
Block a user