OLD | NEW |
1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 'use strict'; | 5 'use strict'; |
6 | 6 |
7 /** | 7 /** |
8 * Creates a new OpenPDFParamsParser. This parses the open pdf parameters | 8 * Creates a new OpenPDFParamsParser. This parses the open pdf parameters |
9 * passed in the url to set initial viewport settings for opening the pdf. | 9 * passed in the url to set initial viewport settings for opening the pdf. |
10 * @param {string} url to be parsed. | 10 * @param {string} url to be parsed. |
11 */ | 11 */ |
12 function OpenPDFParamsParser(url) { | 12 function OpenPDFParamsParser(url) { |
13 this.url_ = url; | 13 this.url_ = url; |
14 this.urlParams = {}; | 14 this.urlParams = {}; |
15 this.parseOpenPDFParams_(); | 15 this.parseOpenPDFParams_(); |
16 } | 16 } |
17 | 17 |
18 OpenPDFParamsParser.prototype = { | 18 OpenPDFParamsParser.prototype = { |
19 /** | 19 /** |
20 * @private | 20 * @private |
| 21 * Parse zoom parameter of open PDF parameters. If this |
| 22 * parameter is passed while opening PDF then PDF should be opened |
| 23 * at the specified zoom level. |
| 24 * @param {number} zoom value. |
| 25 */ |
| 26 parseZoomParam_: function(paramValue) { |
| 27 var paramValueSplit = paramValue.split(','); |
| 28 if ((paramValueSplit.length != 1) && (paramValueSplit.length != 3)) |
| 29 return; |
| 30 |
| 31 // User scale of 100 means zoom value of 100% i.e. zoom factor of 1.0. |
| 32 var zoomFactor = parseFloat(paramValueSplit[0]) / 100; |
| 33 if (isNaN(zoomFactor)) |
| 34 return; |
| 35 |
| 36 // Handle #zoom=scale. |
| 37 if (paramValueSplit.length == 1) { |
| 38 this.urlParams['zoom'] = zoomFactor; |
| 39 return; |
| 40 } |
| 41 |
| 42 // Handle #zoom=scale,left,top. |
| 43 var position = {x: parseFloat(paramValueSplit[1]), |
| 44 y: parseFloat(paramValueSplit[2])}; |
| 45 this.urlParams['position'] = position; |
| 46 this.urlParams['zoom'] = zoomFactor; |
| 47 }, |
| 48 |
| 49 /** |
| 50 * @private |
21 * Parse open PDF parameters. These parameters are mentioned in the url | 51 * Parse open PDF parameters. These parameters are mentioned in the url |
22 * and specify actions to be performed when opening pdf files. | 52 * and specify actions to be performed when opening pdf files. |
23 * See http://www.adobe.com/content/dam/Adobe/en/devnet/acrobat/ | 53 * See http://www.adobe.com/content/dam/Adobe/en/devnet/acrobat/ |
24 * pdfs/pdf_open_parameters.pdf for details. | 54 * pdfs/pdf_open_parameters.pdf for details. |
25 */ | 55 */ |
26 parseOpenPDFParams_: function() { | 56 parseOpenPDFParams_: function() { |
27 var originalUrl = this.url_; | 57 var originalUrl = this.url_; |
28 var paramIndex = originalUrl.search('#'); | 58 var paramIndex = originalUrl.search('#'); |
29 if (paramIndex == -1) | 59 if (paramIndex == -1) |
30 return; | 60 return; |
31 | 61 |
32 var paramTokens = originalUrl.substring(paramIndex + 1).split('&'); | 62 var paramTokens = originalUrl.substring(paramIndex + 1).split('&'); |
33 var paramsDictionary = {}; | 63 var paramsDictionary = {}; |
34 for (var i = 0; i < paramTokens.length; ++i) { | 64 for (var i = 0; i < paramTokens.length; ++i) { |
35 var keyValueSplit = paramTokens[i].split('='); | 65 var keyValueSplit = paramTokens[i].split('='); |
36 if (keyValueSplit.length != 2) | 66 if (keyValueSplit.length != 2) |
37 continue; | 67 continue; |
38 paramsDictionary[keyValueSplit[0]] = keyValueSplit[1]; | 68 paramsDictionary[keyValueSplit[0]] = keyValueSplit[1]; |
39 } | 69 } |
40 | 70 |
41 if ('page' in paramsDictionary) { | 71 if ('page' in paramsDictionary) { |
42 // |pageNumber| is 1-based, but goToPage() take a zero-based page number. | 72 // |pageNumber| is 1-based, but goToPage() take a zero-based page number. |
43 var pageNumber = parseInt(paramsDictionary['page']); | 73 var pageNumber = parseInt(paramsDictionary['page']); |
44 if (!isNaN(pageNumber)) | 74 if (!isNaN(pageNumber)) |
45 this.urlParams['page'] = pageNumber - 1; | 75 this.urlParams['page'] = pageNumber - 1; |
46 } | 76 } |
| 77 |
| 78 if ('zoom' in paramsDictionary) |
| 79 this.parseZoomParam_(paramsDictionary['zoom']); |
47 } | 80 } |
48 }; | 81 }; |
OLD | NEW |