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epubreader/vendor/cbrjs/cbr.js

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2020-04-21 20:37:42 +00:00
var CBRJS = CBRJS || {};
CBRJS.VERSION = "0.0.1";
CBRJS.basePath = CBRJS.basePath || "";
CBRJS.session = CBRJS.session || {};
CBRJS.Reader = function(bookPath, _options) {
var reader = this,
$progressbar = $('.bar'),
search = window.location.search,
parameters,
options,
found;
this.options = options = $.extend(true, _options || {}, {
bookPath: bookPath,
session: {}
});
// Overide options with search parameters
if(search) {
parameters = search.slice(1).split("&");
parameters.forEach(function(p){
var split = p.split("=");
var name = split[0];
var value = split[1] || '';
reader.options[name] = decodeURIComponent(value);
});
}
function extractImages(url, opts) {
var images = [],
xhr = new XMLHttpRequest(),
filename = decodeURIComponent(url.split('/').pop()),
re_file_ext = new RegExp(/\.([a-z]+)$/),
format = filename.toLowerCase().match(re_file_ext)[1],
archive_class = ({ cbz: 'Unzipper', cbr: 'Unrarrer' })[format],
options = $.extend({
start: function () {},
extract: function (page_url) {},
progress: function (percent_complete) {},
finish: function (images) {}
}, opts);
if (!archive_class) {
alert('invalid file type, only cbz and cbr are supported.');
return false;
}
xhr.open('GET',url, true);
options.start(filename);
xhr.responseType = "arraybuffer";
xhr.onprogress = function (e) {
if (e.lengthComputable) {
$progressbar.css('width', Math.floor((e.loaded / e.total) * 100) + '%');
}
};
xhr.onloadstart = function (e) {
$progressbar.css('width', '0%');
};
xhr.onloadend = function (e) {
$('.icon-cloud_download').addClass('ok');
reader.options.session.size = e.total;
};
xhr.onload = function () {
if ((this.status === 200) && this.response) {
var done = false;
var ua = new bitjs.archive[archive_class](this.response, document.head.dataset.staticpath + 'vendor/bitjs/');
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ua.addEventListener(bitjs.archive.UnarchiveEvent.Type.START, function (e) {
$progressbar.css('width', '0%');
$('.icon-unarchive').addClass('active');
});
ua.addEventListener(bitjs.archive.UnarchiveEvent.Type.EXTRACT, function (e) {
var mimetype, blob, url;
var file_extension = e.unarchivedFile.filename.toLowerCase().match(re_file_ext)[1];
switch (file_extension) {
case 'jpg':
case 'jpeg':
mimetype = 'image/jpeg';
break;
case 'png':
mimetype = 'image/png';
break;
case 'gif':
mimetype = 'image/gif';
break;
default:
return false;
}
blob = new Blob([e.unarchivedFile.fileData], { type: mimetype });
url = window.URL.createObjectURL(blob);
images.push(url);
options.extract(url, blob);
});
ua.addEventListener(bitjs.archive.UnarchiveEvent.Type.PROGRESS, function (e) {
options.progress(Math.floor(e.currentBytesUnarchived / e.totalUncompressedBytesInArchive * 100));
});
ua.addEventListener(bitjs.archive.UnarchiveEvent.Type.FINISH, function (e) {
options.finish(images);
});
ua.addEventListener(bitjs.archive.UnarchiveEvent.Type.ERROR, function (e) {
$('.icon-unarchive').removeClass('active');
$('.icon-unarchive').addClass('error');
$('#message').text('Failed to extract images from archive, file corrupted?');
});
}
ua.start();
};
xhr.send();
}
function openComicArchive(url, options) {
var title, page = 0;
extractImages(url, {
start: function (filename) {
this.filename = filename;
$('.toolbar').addClass('hide');
$('.navigation').addClass('hide');
$('.icon-cloud_download').addClass('active');
$('.message-text').text(filename);
$('#progressbar').show();
},
extract: function (url, blob) {
$('.message-text').text('extracting page #' + ++page);
},
progress: function (percent_complete) {
$progressbar.css('width', percent_complete + '%');
},
finish: function (pages) {
$('.icon-unarchive').addClass('ok');
var name = this.filename.replace(/\.[a-z]+$/, '');
var id = encodeURIComponent(name.toLowerCase());
var book = new ComicBook('viewer', pages, options);
document.title = name;
$('.toolbar').removeClass('hide');
$('.navigation').removeClass('hide');
$('#progressbar').hide();
$('#viewer').show();
book.draw();
$(window).on('resize', function () {
book.draw();
});
$(window).on('beforeunload', function(e) {
book.destroy();
});
}
});
}
function getPref (arr, name) {
if ((arr.constructor === Array) && (found = arr.filter(function(e) { return e.name === name; }))) {
if (found.hasOwnProperty("value")) {
return found.value;
}
}
};
openComicArchive(bookPath, {
currentPage: parseInt(options.session.cursor.value) || 0,
enhance: getPref(options.session.preferences, "enhance") || {},
manga: getPref(options.session.preferences, "manga") || false,
thumbnails: getPref(options.session.defaults, "thumbnails"),
thumbnailWidth: parseInt(getPref(options.session.defaults, "thumbnailWidth")) || 200,
session: options.session
});
return this;
};
var ComicBook;
ComicBook = (function ($) {
'use strict';
/**
* Merge two arrays. Any properties in b will replace the same properties in
* a. New properties from b will be added to a.
*
* @param a {Object}
* @param b {Object}
*/
function merge(a, b) {
var prop;
if (typeof b === 'undefined') {
b = {};
}
for (prop in a) {
if (a.hasOwnProperty(prop)) {
if (prop in b) {
continue;
}
b[prop] = a[prop];
}
}
return b;
}
/**
* Exception class. Always throw an instance of this when throwing exceptions.
*
* @param {String} type
* @param {Object} object
* @returns {ComicBookException}
*/
var ComicBookException = {
INVALID_ACTION: 'invalid action',
INVALID_PAGE: 'invalid page',
INVALID_PAGE_TYPE: 'invalid page type',
UNDEFINED_CONTROL: 'undefined control',
INVALID_ZOOM_MODE: 'invalid zoom mode',
INVALID_NAVIGATION_EVENT: 'invalid navigation event'
};
function ComicBook(id, srcs, opts) {
var self = this;
var canvas_id = id; // canvas element id
this.srcs = srcs; // array of image srcs for pages
var defaults = {
displayMode: (window.innerWidth > window.innerHeight) ? 'double' : 'single', // single / double
zoomMode: 'fitWindow', // manual / fitWidth / fitWindow
manga: false, // true / false
fullscreen: false, // true / false
enhance: {}, // image filters to use
thumbnails: true, // true / false (use thumbnails in index)
thumbnailWidth: 200, // width of thumbnail
sidebarWide: false, // use wide sidbar
currentPage: 0, // current page
keyboard: {
32: 'next', // space
34: 'next', // page-down
39: 'next', // cursor-right
33: 'previous', // page-up
37: 'previous', // cursor-left
36: 'first', // home
35: 'last', // end
83: 'sidebar', // s
84: 'toolbar', // t
76: 'toggleLayout', // l
70: 'toggleFullscreen', // f
27: 'closeSidebar' // esc
},
vendorPath: document.head.dataset.staticpath + 'vendor/',
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forward_buffer: 3,
session: {
getCursor: function() {},
setCursor: function(value) {},
getBookmark: function(name, type) {},
setBookmark: function(name, value, type, content) {},
getDefault: function(name) {},
setDefault: function(name, value) {},
getPreference: function(name) {},
setPreference: function(name, value) {}
}
};
var options = {};
this.isMobile = false;
// mobile enhancements
if (/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini|Mobile/i.test(navigator.userAgent)) {
this.isMobile = true;
document.body.classList.add('mobile');
window.addEventListener('load', function () {
setTimeout(function () {
window.scrollTo(0, 1);
}, 0);
});
}
window.addEventListener('resize', function () {
self.setLayout((window.innerWidth > window.innerHeight) ? 'double' : 'single');
});
$.extend(true, options, defaults, opts); // options array for internal use
var no_pages = srcs.length;
var pages = []; // array of preloaded Image objects
var canvas; // the HTML5 canvas object
var context; // the 2d drawing context
var tcv = document.createElement("canvas"); // canvas used for thumbnailer
var tctx = tcv.getContext('2d'); // context used for thumbnailer
var toc = document.getElementById('toc'); // context used for thumbnailer
var loaded = []; // the images that have been loaded so far
var scale = 1; // page zoom scale, 1 = 100%
var is_double_page_spread = false;
var controlsRendered = false; // have the user controls been inserted into the dom yet?
var page_requested = false; // used to request non preloaded pages
var shiv = false;
/**
* Gets the window.innerWidth - scrollbars
*/
function windowWidth() {
var height = window.innerHeight + 1;
if (shiv === false) {
shiv = $(document.createElement('div'))
.attr('id', 'cbr-width-shiv')
.css({
width: '100%',
position: 'absolute',
top: 0,
zIndex: '-1000'
});
$('body').append(shiv);
}
shiv.height(height);
return shiv.innerWidth();
}
/**
* enables the back button
*/
function checkHash() {
var hash = getHash();
if (hash !== options.currentPage && loaded.indexOf(hash) > -1) {
options.currentPage = hash;
self.draw();
}
}
function getHash() {
var hash = parseInt(location.hash.substring(1), 10) - 1 || 0;
if (hash < 0) {
setHash(0);
hash = 0;
}
return hash;
}
function setHash(pageNo) {
location.hash = pageNo;
}
// page hash on first load
var hash = getHash();
/**
* Setup the canvas element for use throughout the class.
*/
function init() {
// setup canvas
canvas = document.getElementById(canvas_id);
context = canvas.getContext('2d');
// render user controls
if (controlsRendered === false) {
self.renderControls();
self.tocCreate(no_pages);
controlsRendered = true;
}
// add page controls
window.addEventListener('keydown', self.navigation, false);
window.addEventListener('hashchange', checkHash, false);
// fill in metadata
options.session.pagecount = srcs.length;
$('.book-title').text(options.session.title);
$('.book-format').text(options.session.format);
$('.book-pagecount').text(options.session.pagecount);
$('.book-size').text(options.session.size);
}
window.addEventListener('touchstart', function (e) {
var $el = $(e.target);
if ($el.attr('id') === 'viewer') {
self.toggleToolbar();
}
}, false);
/**
* Connect controls to events
*/
ComicBook.prototype.renderControls = function () {
var controls = {}, $toolbar;
// set values from preferences or defaults
// do this before connecting listeners to avoid triggering callbacks
for (var prop in options.enhance) {
if(options.enhance.hasOwnProperty(prop)) {
switch (prop) {
case 'brightness':
document.getElementById('brightness').value = options.enhance.brightness['brightness'];
document.getElementById('contrast').value = options.enhance.brightness['contrast'];
break;
case 'sharpen':
document.getElementById('sharpen').value = options.enhance.sharpen['strength'];
break;
case 'desaturate':
$('#image-desaturate').prop('checked', true);
break;
case 'removenoise':
$('#image-removenoise').prop('checked', true);
break;
default:
console.log("unknown enhancement: " + JSON.stringify(prop));
}
}
};
// thumbnail controls
$('#thumbnail-generate').prop('checked', options.thumbnails);
$('#thumbnail-width').val(options.thumbnailWidth);
if (!options.thumbnails) {
$('#toc-populate').addClass('open');
$('#thumbnail-width').prop('disabled', true);
}
// connect callbacks
$('.control').each(function () {
controls[$(this).attr('name')] = $(this);
// add event listeners to controls that specify callbacks
$(this).find('*').andSelf().filter('[data-action][data-trigger]').each(function () {
var $this = $(this);
var trigger = $this.data('trigger');
var action = $this.data('action');
// trigger a direct method if exists
if (typeof self[$this.data('action')] === 'function') {
$this.on(trigger, self[action]);
}
// throw an event to be caught outside if the app code
$this.on(trigger, function (e) {
$(self).trigger(trigger, e);
});
});
});
this.controls = controls;
$toolbar = this.getControl('toolbar');
$toolbar
.find('.manga-' + options.manga).show().end()
.find('.manga-' + !options.manga).hide().end()
.find('.layout').hide().end().find('.layout-' + options.displayMode).show().end()
.find('.fullscreen-' + options.fullscreen).show().end()
.find('.fullscreen-' + !options.fullscreen).hide();
if (parent !== window) {
$('.close').removeClass('hide');
$('.close').on('click', function() { parent.OCA.Epubreader.Plugin.hide(); });
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}
};
ComicBook.prototype.getControl = function (control) {
if (typeof this.controls[control] !== 'object') {
throw ComicBookException.UNDEFINED_CONTROL + ' ' + control;
}
return this.controls[control];
};
ComicBook.prototype.showControl = function (control) {
this.getControl(control).show().addClass('open');
};
ComicBook.prototype.hideControl = function (control) {
this.getControl(control).removeClass('open').hide();
};
ComicBook.prototype.toggleControl = function (control) {
this.getControl(control).toggle().toggleClass('open');
};
ComicBook.prototype.toggleLayout = function () {
self.setLayout((options.displayMode === 'single') ? 'double' : 'single');
};
ComicBook.prototype.setLayout = function (layout) {
var $toolbar = self.getControl('toolbar');
options.displayMode = (layout === 'single') ? 'single' : 'double';
$toolbar.find('.layout').hide().end().find('.layout-' + options.displayMode).show();
self.drawPage();
};
/**
* Create thumbnail for image
*
* @return Image
*/
ComicBook.prototype.getThumb = function (image) {
var thumb = new Image();
var scale = image.width / options.thumbnailWidth;
tcv.width = options.thumbnailWidth;
tcv.height = Math.floor(image.height / scale);
tctx.drawImage(image, 0, 0, tcv.width, tcv.height);
thumb.src = tcv.toDataURL();
tctx.clearRect(0, 0, tcv.width, tcv.height);
return thumb;
};
/**
* Create empty TOC with placeholder images
*/
ComicBook.prototype.tocCreate = function (no_pages) {
// use small image with reasonable aspect ratio
tcv.width = 5;
tcv.height = 7;
// transparent, style with .placeholder in CSS
tctx.fillStyle = "rgba(200, 200, 200, 0)";
tctx.fillRect(0, 0, tcv.width, tcv.height);
var imgsrc = tcv.toDataURL();
for(var i = 0; i < no_pages; i++) {
var item = document.createElement('li');
item.setAttribute("id", "page-" + parseInt(i + 1));
var placeholder = new Image();
placeholder.src = imgsrc;
var label = document.createElement('span');
label.innerHTML = i + 1;
item.appendChild(placeholder);
item.appendChild(label);
toc.appendChild(item);
}
};
/**
* Insert thumbnail into TOC
*/
ComicBook.prototype.tocInsert = function (image, page, replace) {
var placeholder = toc.children[page].firstChild;
if (replace === true) {
placeholder.parentNode.replaceChild(
self.getThumb(image),
placeholder
);
}
toc.children[page].addEventListener('click', function (e) {
self.drawPage(page + 1, true);
});
};
/**
* Populate TOC on demand
*/
ComicBook.prototype.tocPopulate = function () {
var i = 0;
while (i < srcs.length) {
self.tocInsert(pages[i], i, true);
i++;
}
// set, but don't save for future sessions
options.thumbnails = true;
$('#toc-populate').removeClass('open');
};
/**
* Get the image for a given page.
*
* @return Image
*/
ComicBook.prototype.getPage = function (i) {
if (i < 0 || i > srcs.length - 1) {
throw ComicBookException.INVALID_PAGE + ' ' + i;
}
if (typeof pages[i] === 'object') {
return pages[i];
} else {
page_requested = i;
this.showControl('loadingOverlay');
}
};
/**
* @see #preload
*/
ComicBook.prototype.draw = function () {
init();
// resize navigation controls
$('.navigate').outerHeight(window.innerHeight);
$('.overlay').outerWidth(windowWidth()).height(window.innerHeight);
// preload images if needed
if (pages.length !== no_pages) {
this.preload();
} else {
this.drawPage();
}
};
/**
* Zoom the canvas
*
* @param new_scale {Number} Scale the canvas to this ratio
*/
ComicBook.prototype.zoom = function (new_scale) {
options.zoomMode = 'manual';
scale = new_scale;
if (typeof this.getPage(options.currentPage) === 'object') {
this.drawPage();
}
};
ComicBook.prototype.zoomIn = function () {
self.zoom(scale + 0.1);
};
ComicBook.prototype.zoomOut = function () {
self.zoom(scale - 0.1);
};
ComicBook.prototype.fitWidth = function () {
options.zoomMode = 'fitWidth';
self.drawPage();
};
ComicBook.prototype.fitWindow = function () {
options.zoomMode = 'fitWindow';
self.drawPage();
};
/**
* Preload all images, draw the page only after a given number have been loaded.
*
* @see #drawPage
*/
ComicBook.prototype.preload = function () {
var i = options.currentPage; // the current page counter for this method
var rendered = false;
var queue = [];
this.showControl('loadingOverlay');
function loadImage(i) {
var page = new Image();
page.src = srcs[i];
page.onload = function () {
pages[i] = this;
self.tocInsert(this, i, options.thumbnails);
loaded.push(i);
$('#cbr-progress-bar .progressbar-value').css('width', Math.floor((loaded.length / no_pages) * 100) + '%');
// double page mode needs an extra page added
var buffer = (options.displayMode === 'double' && options.currentPage < srcs.length - 1) ? 1 : 0;
// start rendering the comic when the requested page is ready
if ((rendered === false && ($.inArray(options.currentPage + buffer, loaded) !== -1) ||
(typeof page_requested === 'number' && $.inArray(page_requested, loaded) !== -1))) {
// if the user is waiting for a page to be loaded, render that one instead of the default options.currentPage
if (typeof page_requested === 'number') {
options.currentPage = page_requested - 1;
page_requested = false;
}
self.drawPage();
self.hideControl('loadingOverlay');
rendered = true;
}
if (queue.length) {
loadImage(queue[0]);
queue.splice(0, 1);
} else {
$('#cbr-status').delay(500).fadeOut();
}
};
}
// loads pages in both directions so you don't have to wait for all pages
// to be loaded before you can scroll backwards
function preload(start, stop) {
var j = 0;
var count = 1;
var forward = start;
var backward = start - 1;
while (forward <= stop) {
if (count > options.forward_buffer && backward > -1) {
queue.push(backward);
backward--;
count = 0;
} else {
queue.push(forward);
forward++;
}
count++;
}
while (backward > -1) {
queue.push(backward);
backward--;
}
loadImage(queue[j]);
}
preload(i, srcs.length - 1);
};
ComicBook.prototype.pageLoaded = function (page_no) {
return (typeof loaded[page_no - 1] !== 'undefined');
};
/**
* Draw the current page in the canvas
*/
ComicBook.prototype.drawPage = function (page_no, reset_scroll) {
var scrollY;
reset_scroll = (typeof reset_scroll !== 'undefined') ? reset_scroll : true;
scrollY = reset_scroll ? 0 : window.scrollY;
// if a specific page is given try to render it, if not bail and wait for preload() to render it
if (typeof page_no === 'number' && page_no < srcs.length && page_no > 0) {
options.currentPage = page_no - 1;
if (!this.pageLoaded(page_no)) {
this.showControl('loadingOverlay');
return;
}
}
if (options.currentPage < 0) {
options.currentPage = 0;
}
var zoom_scale;
var offsetW = 0,
offsetH = 0;
var page = self.getPage(options.currentPage);
var page2 = false;
if (options.displayMode === 'double' && options.currentPage < srcs.length - 1) {
page2 = self.getPage(options.currentPage + 1);
}
if (typeof page !== 'object') {
throw ComicBookException.INVALID_PAGE_TYPE + ' ' + typeof page;
}
var width = page.width,
height = page.height;
// reset the canvas to stop duplicate pages showing
canvas.width = 0;
canvas.height = 0;
// show double page spreads on a single page
is_double_page_spread = (
typeof page2 === 'object' &&
(page.width > page.height || page2.width > page2.height) &&
options.displayMode === 'double'
);
if (is_double_page_spread) {
options.displayMode = 'single';
}
if (options.displayMode === 'double') {
// for double page spreads, factor in the width of both pages
if (typeof page2 === 'object') {
width += page2.width;
}
// if this is the last page and there is no page2, still keep the canvas wide
else {
width += width;
}
}
// update the page scale if a non manual mode has been chosen
switch (options.zoomMode) {
case 'manual':
document.body.style.overflowX = 'auto';
zoom_scale = (options.displayMode === 'double') ? scale * 2 : scale;
break;
case 'fitWidth':
document.body.style.overflowX = 'hidden';
// scale up if the window is wider than the page, scale down if the window
// is narrower than the page
zoom_scale = (windowWidth() > width) ? ((windowWidth() - width) / windowWidth()) + 1 : windowWidth() / width;
// update the interal scale var so switching zoomModes while zooming will be smooth
scale = zoom_scale;
break;
case 'fitWindow':
document.body.style.overflowX = 'hidden';
var width_scale = (windowWidth() > width) ?
((windowWidth() - width) / windowWidth()) + 1 // scale up if the window is wider than the page
:
windowWidth() / width; // scale down if the window is narrower than the page
var windowHeight = window.innerHeight;
var height_scale = (windowHeight > height) ?
((windowHeight - height) / windowHeight) + 1 // scale up if the window is wider than the page
:
windowHeight / height; // scale down if the window is narrower than the page
zoom_scale = (width_scale > height_scale) ? height_scale : width_scale;
scale = zoom_scale;
break;
default:
throw ComicBookException.INVALID_ZOOM_MODE + ' ' + options.zoomMode;
}
var canvas_width = page.width * zoom_scale;
var canvas_height = page.height * zoom_scale;
var page_width = (options.zoomMode === 'manual') ? page.width * scale : canvas_width;
var page_height = (options.zoomMode === 'manual') ? page.height * scale : canvas_height;
canvas_height = page_height;
// make sure the canvas is always at least full screen, even if the page is more narrow than the screen
canvas.width = (canvas_width < windowWidth()) ? windowWidth() : canvas_width;
canvas.height = (canvas_height < window.innerHeight) ? window.innerHeight : canvas_height;
// always keep pages centered
if (options.zoomMode === 'manual' || options.zoomMode === 'fitWindow') {
// work out a horizontal position
if (canvas_width < windowWidth()) {
offsetW = (windowWidth() - page_width) / 2;
if (options.displayMode === 'double') {
offsetW = offsetW - page_width / 2;
}
}
// work out a vertical position
if (canvas_height < window.innerHeight) {
offsetH = (window.innerHeight - page_height) / 2;
}
}
// in manga double page mode reverse the page(s)
if (options.manga && options.displayMode === 'double' && typeof page2 === 'object') {
var tmpPage = page;
var tmpPage2 = page2;
page = tmpPage2;
page2 = tmpPage;
}
// draw the page(s)
context.drawImage(page, offsetW, offsetH, page_width, page_height);
if (options.displayMode === 'double' && typeof page2 === 'object') {
context.drawImage(page2, page_width + offsetW, offsetH, page_width, page_height);
}
this.pixastic = new Pixastic(context, options.vendorPath + 'pixastic/');
// apply any image enhancements previously defined
$.each(options.enhance, function (action, options) {
self.enhance[action](options);
});
var current_page =
(options.displayMode === 'double' &&
options.currentPage + 2 <= srcs.length) ? (options.currentPage + 1) + '-' + (options.currentPage + 2) : options.currentPage + 1;
this.getControl('toolbar')
.find('.current-page').text(current_page)
.end()
.find('.page-count').text(srcs.length);
// revert page mode back to double if it was auto switched for a double page spread
if (is_double_page_spread) {
options.displayMode = 'double';
}
// disable the fit width button if needed
$('button.cbr-fit-width').attr('disabled', (options.zoomMode === 'fitWidth'));
$('button.cbr-fit-window').attr('disabled', (options.zoomMode === 'fitWindow'));
// disable prev/next buttons if not needed
$('.navigate').show();
if (options.currentPage === 0) {
if (options.manga) {
$('.navigate-left').show();
$('.navigate-right').hide();
} else {
$('.navigate-left').hide();
$('.navigate-right').show();
}
}
if (options.currentPage === srcs.length - 1 || (typeof page2 === 'object' && options.currentPage === srcs.length - 2)) {
if (options.manga) {
$('.navigate-left').hide();
$('.navigate-right').show();
} else {
$('.navigate-left').show();
$('.navigate-right').hide();
}
}
if (options.currentPage !== getHash()) {
$(this).trigger('navigate');
}
// update hash location
if (getHash() !== options.currentPage) {
setHash(options.currentPage + 1);
}
options.session.setCursor(options.currentPage);
};
/**
* Increment the counter and draw the page in the canvas
*
* @see #drawPage
*/
ComicBook.prototype.drawNextPage = function () {
var page;
try {
page = self.getPage(options.currentPage + 1);
} catch (e) {
}
if (!page) {
return false;
}
if (options.currentPage + 1 < pages.length) {
options.currentPage += (options.displayMode === 'single' || is_double_page_spread) ? 1 : 2;
try {
self.drawPage();
} catch (e) {
}
}
// make sure the top of the page is in view
window.scroll(0, 0);
};
/**
* Decrement the counter and draw the page in the canvas
*
* @see #drawPage
*/
ComicBook.prototype.drawPrevPage = function () {
var page;
try {
page = self.getPage(options.currentPage - 1);
} catch (e) {
}
if (!page) {
return false;
}
is_double_page_spread = (page.width > page.height); // need to run double page check again here as we are going backwards
if (options.currentPage > 0) {
options.currentPage -= (options.displayMode === 'single' || is_double_page_spread) ? 1 : 2;
self.drawPage();
}
// make sure the top of the page is in view
window.scroll(0, 0);
};
/* default settings */
ComicBook.prototype.thumbnails = function() {
if ($(this).is(':checked')) {
options.thumbnails = true;
document.getElementById('thumbnail-width').disabled = false;
} else {
options.thumbnails = false;
document.getElementById('thumbnail-width').disabled = true;
}
options.session.setDefault("thumbnails", options.thumbnails);
};
ComicBook.prototype.thumbnailWidth = function() {
options.thumbnailWidth = $(this).val();
options.session.setDefault("thumbnailWidth", options.thumbnailWidth);
};
ComicBook.prototype.sidebarWide = function (wide) {
if (typeof(wide) !== "boolean") {
wide = ($(this).is(':checked') === true);
}
if (wide) {
options.sidebarWide = true;
document.getElementById('sidebar').classList.add('wide');
} else {
options.sidebarWide = false;
document.getElementById('sidebar').classList.remove('wide');
self.sidebarWidth(0);
}
options.session.setDefault("sidebarWide", options.sidebarWide);
};
ComicBook.prototype.sidebarWidth = function(width) {
if (typeof(width) !== "number") {
width = $(this).val();
}
options.sidebarWidth = width;
// width === 0 is interpreted as 'use value from CSS'
if (options.sidebarWidth > 0) {
document.getElementById('sidebar').style.width = options.sidebarWidth + "%";
} else {
document.getElementById('sidebar').style.width = "";
}
options.session.setDefault("sidebarWidth", options.sidebarWidth);
};
ComicBook.prototype.resetSidebar = function () {
self.sidebarWide(false);
self.sidebarWidth(0);
};
/* book-specific settings */
ComicBook.prototype.brightness = function () {
var $brightness = {
brightness: $('#brightness').val(),
contrast: $('#contrast').val()
};
self.enhance.brightness($brightness);
options.enhance.brightness = $brightness;
options.session.setPreference("enhance",options.enhance);
};
ComicBook.prototype.sharpen = function () {
options.enhance.sharpen = $(this).val();
self.enhance.sharpen({
strength: options.enhance.sharpen
});
options.session.setPreference("enhance",options.enhance);
};
ComicBook.prototype.desaturate = function () {
if ($(this).is(':checked')) {
options.enhance.desaturate = {};
self.enhance.desaturate();
} else {
delete options.enhance.desaturate;
self.enhance.resaturate();
}
options.session.setPreference("enhance",options.enhance);
};
ComicBook.prototype.removenoise = function () {
if ($(this).is(':checked')) {
options.enhance.removenoise = {};
self.enhance.removenoise();
} else {
delete options.enhance.removenoise;
self.enhance.unremovenoise();
}
options.session.setPreference("enhance",options.enhance);
};
ComicBook.prototype.resetEnhancements = function () {
self.enhance.reset();
options.session.setPreference("enhance",options.enhance);
};
/**
* Apply image enhancements to the canvas.
*/
ComicBook.prototype.enhance = {
/**
* Reset enhancements.
* This can reset a specific enhancement if the method name is passed, or
* it will reset all.
*
* @param method {string} the specific enhancement to reset
*/
reset: function (method) {
if (!method) {
options.enhance = {};
} else {
delete options.enhance[method];
}
self.drawPage(null, false);
},
/**
* Pixastic progress callback
* @param {float} progress
*/
// progress: function (progress) {
progress: function () {
// console.info(Math.floor(progress * 100));
},
/**
* Pixastic on complete callback
*/
done: function () {
},
/**
* Adjust brightness / contrast
*
* params
* brightness (int) -150 to 150
* contrast: (float) -1 to infinity
*
* @param {Object} params Brightness & contrast levels
* @param {Boolean} reset Reset before applying more enhancements?
*/
brightness: function (params, reset) {
if (reset !== false) {
this.reset('brightness');
}
// merge user options with defaults
var opts = merge({
brightness: 0,
contrast: 0
}, params);
options.enhance.brightness = opts;
// run the enhancement
self.pixastic.brightness({
brightness: opts.brightness,
contrast: opts.contrast
}).done(this.done, this.progress);
},
/**
* Force black and white
*/
desaturate: function () {
options.enhance.desaturate = {};
self.pixastic.desaturate().done(this.done, this.progress);
},
/**
* Undo desaturate
*/
resaturate: function () {
delete options.enhance.desaturate;
self.drawPage(null, false);
},
/**
* Sharpen
*
* options:
* strength: number (-1 to infinity)
*
* @param {Object} options
*/
sharpen: function (params) {
this.desharpen();
var opts = merge({
strength: 0
}, params);
options.enhance.sharpen = opts;
self.pixastic.sharpen3x3({
strength: opts.strength
}).done(this.done, this.progress);
},
desharpen: function () {
delete options.enhance.sharpen;
self.drawPage(null, false);
},
/**
* Remove noise
*/
removenoise: function () {
options.enhance.removenoise = {};
self.pixastic.removenoise().done(this.done, this.progress);
},
unremovenoise: function () {
delete options.enhance.removenoise;
self.drawPage(null, false);
}
};
ComicBook.prototype.navigation = function (e) {
// disable navigation when the overlay is showing
if ($('#cbr-loading-overlay').is(':visible')) {
return false;
}
var side = false, page_no = false;
switch (e.type) {
case 'click':
side = e.currentTarget.getAttribute('data-navigate-side');
break;
case 'keydown':
// console.log("keydown: " + e.keyCode);
switch (options.keyboard[e.keyCode]) {
case 'previous':
side = 'left';
break;
case 'next':
side = 'right';
break;
case 'first':
page_no = 1;
break;
case 'last':
page_no = srcs.length - 1;
break;
case 'sidebar':
self.toggleSidebar();
break;
case 'toolbar':
self.toggleToolbar();
break;
case 'toggleLayout':
self.toggleLayout();
break;
case 'toggleFullscreen':
self.toggleFullscreen();
break;
case 'closeSidebar':
self.closeSidebar();
break;
default:
/*
throw ComicBookException.INVALID_NAVIGATION_EVENT + ' ' + e.type;
*/
}
break;
default:
throw ComicBookException.INVALID_NAVIGATION_EVENT + ' ' + e.type;
}
if (side) {
e.stopPropagation();
// western style (left to right)
if (!options.manga) {
if (side === 'left') {
self.drawPrevPage();
}
if (side === 'right') {
self.drawNextPage();
}
}
// manga style (right to left)
else {
if (side === 'left') {
self.drawNextPage();
}
if (side === 'right') {
self.drawPrevPage();
}
}
return false;
}
if (page_no) {
self.drawPage(page_no, true);
return false;
}
};
ComicBook.prototype.toggleReadingMode = function () {
options.manga = !options.manga;
self.getControl('toolbar')
.find('.manga-' + options.manga).show().end()
.find('.manga-' + !options.manga).hide();
options.session.setPreference("manga",options.manga);
};
ComicBook.prototype.toggleToolbar = function () {
self.toggleControl('toolbar');
};
ComicBook.prototype.openSidebar = function () {
$('.sidebar').addClass('open');
$('.toolbar').addClass('open');
self.showControl('busyOverlay');
self.scrollToc();
};
ComicBook.prototype.closeSidebar = function () {
$('.sidebar').removeClass('open');
$('.toolbar').removeClass('open');
self.toggleToolbar();
self.hideControl('busyOverlay');
};
ComicBook.prototype.toggleSidebar = function () {
$('.sidebar').hasClass('open')
? self.closeSidebar()
: self.openSidebar();
};
ComicBook.prototype.toggleFullscreen = function () {
options.fullscreen = !options.fullscreen;
self.getControl('toolbar')
.find('.fullscreen-' + options.fullscreen).show().end()
.find('.fullscreen-' + !options.fullscreen).hide();
if (options.fullscreen) {
screenfull.request($('#container')[0]);
} else {
screenfull.exit($('#container')[0]);
}
};
/*
* Scroll TOC to page (default: current page)
*/
ComicBook.prototype.scrollToc = function (page) {
if (page === undefined) {
page = options.currentPage;
}
document.getElementById('toc').parentNode.scrollTop =
document.getElementById('page-' + String(page + 1)).offsetTop
- Math.floor($('.panels').height() * 1.5);
};
ComicBook.prototype.showToc = function () {
self.getControl('sidebar')
.find('.open').removeClass('open').end()
.find('.toc-view').addClass('open');
if (!options.thumbnails) {
$('#toc-populate').addClass('open');
}
};
ComicBook.prototype.showBookSettings = function () {
self.getControl('sidebar')
.find('.open').removeClass('open').end()
.find('.book-settings-view').addClass('open');
};
ComicBook.prototype.showSettings = function () {
self.getControl('sidebar')
.find('.open').removeClass('open').end()
.find('.settings-view').addClass('open');
};
ComicBook.prototype.destroy = function () {
$.each(this.controls, function (name, $control) {
$control.remove();
});
canvas.width = 0;
canvas.height = 0;
window.removeEventListener('keydown', this.navigation, false);
window.removeEventListener('hashchange', checkHash, false);
setHash('');
// $(this).trigger('destroy');
};
}
return ComicBook;
})(jQuery);
(function(root, $) {
var previousReader = root.cbReader || {};
var cbReader = root.cbReader = function(path, options) {
return new CBRJS.Reader(path, options);
};
//exports to multiple environments
if (typeof define === 'function' && define.amd) {
//AMD
define(function(){ return Reader; });
} else if (typeof module != "undefined" && module.exports) {
//Node
module.exports = cbReader;
}
})(window, jQuery);