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minimal support for epub documents

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j 2025-06-21 08:29:19 +02:00
commit 3c69c0c101
50 changed files with 30209 additions and 10 deletions
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static/reader/epub.js Normal file
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"use strict";
var reader;
var id = document.location.pathname.split('/')[1];
var annotations = [];
var currentSelection;
var fontSize = parseInt(localStorage.epubFontSize || '100', 10)
var justSelected = false;
Ox.load({
'UI': {
loadCSS: false
}
}, function() {
Ox.$parent.bindMessage(function(data, event) {
console.log('got', event, 'data', data)
if (event == 'selectAnnotation') {
selectAnnotation(data.id)
var annotation = annotations.filter(function(a) { return a.id == data.id })[0]
if (annotation) {
reader.rendition.display(annotation.cfiRange)
}
} else if (event == 'addAnnotation') {
createAnnotation()
} else if (event == 'addAnnotations') {
if (data.replace) {
annotations.forEach(function(a) {
reader.rendition.annotations.remove(a.cfiRange)
})
annotations = []
}
data.annotations.forEach(function(annotation) {
annotations.push(annotation)
renderAnnotation(annotation)
})
} else if (event == 'removeAnnotation') {
removeAnnotation(data.id)
}
})
})
function createAnnotation() {
console.log('createAnnotation', currentSelection)
if (currentSelection) {
/*
var range = currentSelection.contents.window.getSelection().getRangeAt(0)
console.log(
currentSelection.cfiRange,
reader.rendition.book.section().cfiFromRange(range).toString()
)
//currentSelection.cfiRange = reader.rendition.book.section().cfiFromRange(range).toString()
*/
renderAnnotation(currentSelection)
currentSelection.contents.window.getSelection().removeAllRanges();
delete currentSelection.contents
addAnnotation(currentSelection)
document.querySelectorAll('.epubjs-hl.selected').forEach(function(other) {
other.classList.remove('selected')
})
console.log('create annot')
currentSelection = null
}
}
function addAnnotation(annotation) {
annotations.push(annotation)
Ox.$parent.postMessage('addAnnotation', annotation)
}
function selectAnnotation(id) {
$('.epubjs-hl.selected').each(function(i, g) {
g.classList.remove('selected')
})
$('.epubjs-hl[data-id='+id+']').each(function(i, g) {
g.classList.add('selected')
})
}
function deselectAnnotation(id) {
$('.epubjs-hl[data-id='+id+']').each(function(i, g) {
g.classList.remove('selected')
})
}
function deselectAllAnnotations() {
var ids = []
document.querySelectorAll('.epubjs-hl.selected').forEach(function(g) {
g.classList.remove('selected')
if (!Ox.contains(ids, id)) {
ids.push(id)
Ox.$parent.postMessage('selectAnnotation', {id: null})
}
})
}
function removeAnnotation(id) {
var a = annotations.filter(function(a) { return a.id == id })[0]
if (a) {
annotations = annotations.filter(function(annotation) {
return annotation.id != id
})
reader.rendition.annotations.remove(a.cfiRange)
}
Ox.$parent.postMessage('removeAnnotation', {id: id})
}
function renderAnnotation(annotation) {
reader.rendition.annotations.highlight(annotation.cfiRange, {id: annotation.id}, onHighlightClicked);
}
function getText(book, cfiRange, cb) {
book.getRange(cfiRange).then(function (range) {
var text;
if (range) {
text = range.toString();
}
cb(text)
})
}
function onHighlightClicked(e) {
console.log("highlight clicked", e.target.dataset.epubcfi);
if(!e.target.classList.contains('selected')) {
document.querySelectorAll('.epubjs-hl.selected').forEach(function(other) {
other.classList.remove('selected')
})
e.target.classList.add('selected')
Ox.$parent.postMessage('selectAnnotation', {id: e.target.dataset.id})
}
}
document.onreadystatechange = function () {
if (document.readyState == "complete") {
EPUBJS.filePath = "/static/epub.js/js/libs/";
EPUBJS.cssPath = "/static/epub.js/css/";
EPUBJS.core.addCss('/static/css/epub.css')
// fileStorage.filePath = EPUBJS.filePath;
reader = ePubReader(document.location.pathname, {
restore: true
});
var rendition = reader.rendition,
book = reader.book;
rendition.themes.fontSize(fontSize + "%");
reader.rendition.on('keydown', function(event) {
if (event.key == 'Delete') {
document.querySelectorAll('.epubjs-hl.selected').forEach(function(a) {
removeAnnotation(a.dataset.id)
})
}
if (event.key == 'n' || event.keyCode == 13) {
var selected = document.querySelector('.epubjs-hl.selected')
console.log('!!', currentSelection, selected)
if (currentSelection) {
if (selected) {
deselectAllAnnotations()
}
createAnnotation()
} else if (selected) {
console.log('editNote?', selected.dataset.id)
}
}
if (event.keyCode == 61 && event.shiftKey) {
fontSize += 10
rendition.themes.fontSize(fontSize + "%");
localStorage.epubFontSize = fontSize
event.preventDefault()
} else if (event.keyCode == 173 && event.shiftKey) {
fontSize -= 10
rendition.themes.fontSize(fontSize + "%");
localStorage.epubFontSize = fontSize
event.preventDefault()
} else if (event.keyCode == 48 && event.shiftKey) {
fontSize = 100
rendition.themes.fontSize(fontSize + "%");
localStorage.epubFontSize = fontSize
event.preventDefault()
}
}).on('mouseup', function(event) {
if (!justSelected) {
var selection = window.getSelection()
if (selection.isCollapsed) {
currentSelection = null
}
if (!currentSelection) {
Ox.$parent.postMessage('selectText', false)
}
}
deselectAllAnnotations()
justSelected = false
})
rendition.on("mark", function(cfiRange, contents) {
console.log('!! mark', cfiRange)
})
rendition.on("selected", function(cfiRange, contents) {
justSelected = true
getText(book, cfiRange, function(text) {
var position = cfiRange;
currentSelection = {
id: Ox.SHA1(cfiRange),
cfiRange: cfiRange,
position: position,
text: text,
contents: contents
}
Ox.$parent.postMessage('selectText', text ? true : false)
})
});
}
};