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Code Issues Releases Wiki Activity

files_reader: More PDF madness, next/previous search hit navigation w/highlighting, etc...

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This commit is contained in:
frankdelange 2017-04-07 22:21:15 +02:00
parent 640256c49b
commit f909cd0f1b
11 changed files with 448 additions and 458 deletions
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82
files_reader/vendor/pdfjs/controllers/textlayer_controller.js vendored
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@ -1,40 +1,8 @@
/* Copyright 2012 Mozilla Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @typedef {Object} TextLayerBuilderOptions
* @property {HTMLDivElement} textLayerDiv - The text layer container.
* @property {EventBus} eventBus - The application event bus.
* @property {number} pageIndex - The page index.
* @property {PageViewport} viewport - The viewport of the text layer.
* @property {PDFFindController} findController
* @property {boolean} enhanceTextSelection - Option to turn on improved
* text selection.
*/
/**
* TextLayerBuilder provides text-selection functionality for the PDF.
* It does this by creating overlay divs over the PDF text. These divs
* contain text that matches the PDF text they are overlaying. This object
* also provides a way to highlight text that is being searched for.
* @class
*/
PDFJS.Reader.TextLayerController = function (options) {
PDFJS.Reader.TextLayerController = function (options, reader) {
var EXPAND_DIVS_TIMEOUT = 300; // ms
this.reader = reader;
this.textLayerDiv = options.textLayerDiv;
this.eventBus = options.eventBus || null;
this.textContent = null;
@ -44,7 +12,6 @@ PDFJS.Reader.TextLayerController = function (options) {
this.matches = [];
this.viewport = options.viewport;
this.textDivs = [];
this.findController = options.findController || null;
this.textLayerRenderTask = null;
this.enhanceTextSelection = options.enhanceTextSelection;
this._bindMouse();
@ -117,13 +84,14 @@ PDFJS.Reader.TextLayerController.prototype.setTextContent = function (textConten
PDFJS.Reader.TextLayerController.prototype.convertMatches = function(matches, matchesLength) {
var reader = this;
var reader = this.reader;
var i = 0;
var iIndex = 0;
var bidiTexts = this.textContent.items;
var end = bidiTexts.length - 1;
var queryLen = reader.search.query.length;
var queryLen = reader.search_state ?
reader.search_state.query.length : null;
var ret = [];
if (!matches) {
return ret;
@ -179,18 +147,15 @@ PDFJS.Reader.TextLayerController.prototype.renderMatches = function (matches) {
return;
}
var reader = this;
var reader = this.reader;
var bidiTexts = this.textContent.items;
var textDivs = this.textDivs;
var prevEnd = null;
var pageIdx = this.pageIdx;
var isSelectedPage = (this.findController === null ?
false : (pageIdx === this.findController.selected.pageIdx));
var selectedMatchIdx = (this.findController === null ?
-1 : this.findController.selected.matchIdx);
var highlightAll = (this.findController === null ?
false : this.findController.state.highlightAll);
var isSelectedPage = (pageIdx === reader.selected.pageIdx);
var selectedMatchIdx = reader.selected.matchIdx;
var highlightAll = true;
var infinity = {
divIdx: -1,
offset: undefined
@ -230,12 +195,8 @@ PDFJS.Reader.TextLayerController.prototype.renderMatches = function (matches) {
var begin = match.begin;
var end = match.end;
var isSelected = (isSelectedPage && i === selectedMatchIdx);
var highlightSuffix = (isSelected ? ' selected' : '');
if (this.findController) {
this.findController.updateMatchPosition(pageIdx, i, textDivs,
begin.divIdx);
}
var id = "match:" + pageIdx + ":" + i;
var highlightSuffix = (isSelected ? ' selected ' + id : ' ' + id);
// Match inside new div.
if (!prevEnd || begin.divIdx !== prevEnd.divIdx) {
@ -274,6 +235,13 @@ PDFJS.Reader.TextLayerController.prototype.updateMatches = function () {
return;
}
var reader = this.reader;
// Only show matches when search is active
if (reader.search_active !== true) {
return;
}
// Clear all matches.
var matches = this.matches;
var textDivs = this.textDivs;
@ -292,18 +260,12 @@ PDFJS.Reader.TextLayerController.prototype.updateMatches = function () {
clearedUntilDivIdx = match.end.divIdx + 1;
}
if (this.findController === null || !this.findController.active) {
return;
}
// Convert the matches on the page controller into the match format
// used for the textLayer.
var pageMatches, pageMatchesLength;
if (this.findController !== null) {
pageMatches = this.findController.pageMatches[this.pageIdx] || null;
pageMatchesLength = (this.findController.pageMatchesLength) ?
this.findController.pageMatchesLength[this.pageIdx] || null : null;
}
var pageMatches = reader.pageMatches[this.pageIdx] || null,
pageMatchesLength = reader.pageMatchesLength ?
reader.pageMatchesLength[this.pageIdx] || null : null;
this.matches = this.convertMatches(pageMatches, pageMatchesLength);
this.renderMatches(this.matches);