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nashi.html
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nashi.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title>🍐nashi</title>
<style>
body { background:WhiteSmoke; overflow:auto;}
polygon {opacity: .2;}
/*Colours for line polygons. Order is important for overwrites!*/
polygon.empty {fill:Salmon;}
polygon.ocr {fill:Blue;}
polygon.gt {fill:Green;}
polygon.edit {fill:Red;}
polygon.comment {opacity: .8; fill-opacity:.2; stroke:Red;stroke-width:.4em;stroke-dasharray:5,5;}
polygon.region{opacity: 0;}
polygon.region:hover {cursor:crosshair;}
polygon.select {fill:Black}
circle.pointhandle {opacity:1;}
circle.pointhandle:hover {cursor:move;}
circle.lastmoved {fill:Red;}
line.linehandle:hover {cursor:copy;}
#selectlayer {opacity:0;}
#selectlayer:hover {cursor:crosshair;}
#editor {position: absolute; background: white; width: 880px;}
#svg0 {display:none;}
#inputbox {display:none; background: whitesmoke; padding: 2px; font-family: Andron Scriptor Web;}
#inputline {
background:White;
white-space:nowrap;
padding-left:1px;
padding-right:1px;
}
#commentline {
min-height: 1.25em;
display: none;
background: yellow;
direction: ltr;
padding-left: 1px;
padding-right: 1px;
}
#vkeyboard {display:none; font-size:150%}
/*#inputline:focus {outline: solid 2px red;}*/
</style>
<script>
// virtual keyboard, max 10 entries per char
virtualkeyboard = {
"a": ["ä", "ā", "æ", "aͩ", "aͦ", "ȧ"],
"b": ["b᷎", "b"],
"c": ["c̄", "cͣ"],
"d": ["d᷎", "", "dͭ"],
"e": ["ē", "ę", "eͥ"],
"g": ["ḡ", "g̊", "gͥ"],
"h": ["h̊", "h̄", "ḣ", "h̃"],
"i": ["ī", "iͥ"],
"l": ["ł"],
"m": [""],
"n": [""],
"o": ["ō", "œ"],
"p": ["", "p̃", "ꝑ", "ꝓ"],
"q": ["qᷓ", "q̄", "q", "ꝗ", "ꝗᷓ", "q̊", "q̈", "ꝙ", "ꝙᷓ", ""],
"r": ["r̄"],
"t": ["t"],
"u": ["ū"],
"v": ["ꝟ", "v᷎", "v"],
"w": ["wͭ"],
"x": ["x̄"],
"y": [""],
"1": ["¹"],
"2": ["²"],
"3": ["³"],
"4": ["⁴"],
"5": ["⁵"],
"6": ["⁶"],
"7": ["⁷"],
"8": ["⁸"],
"9": ["⁹"],
"0": ["⁰"]
};
function $(sel) {
return document.querySelector(sel);
}
/////// EDIT MODE
// delete line from pagexml
function deleteline(id){
var line = pagexml.getElementById(id);
line.parentElement.removeChild(line);
}
// create new line in pagexml
function createline(id, rid){
var ns = pagexml.firstChild.attributes.xmlns.value;
var regionxml = pagexml.getElementById(rid);
var newline = pagexml.createElementNS(ns, "TextLine");
newline.setAttribute("id", id);
var newcoords = pagexml.createElementNS(ns, "Coords");
newcoords.setAttribute("points", $("#"+id).getAttribute("points"));
newline.appendChild(newcoords);
regionxml.appendChild(newline);
}
// write points to pagexml
function writepoints(id){
var coordsxml = pagexml.getElementById(id).getElementsByTagName("Coords")[0];
coordsxml.setAttribute("points", $("#"+id).getAttribute("points"));
}
// calculate point on image from event
function getimgpoint(evt){
var p = $("#svg0").createSVGPoint();
p.x = evt.clientX
p.y = evt.clientY
var m = evt.target.getScreenCTM();
p = p.matrixTransform(m.inverse());
p.x = Math.round(p.x);
p.y = Math.round(p.y);
return p;
}
// remove all point handles
function removeallpointhandles(){
var pgroup = $("#pointhandles");
if (pgroup){
$("#group").removeChild(pgroup);
}
}
// move point handle around
function dragcircle(evt, pid){
var handle = document.getElementsByClassName("movehandle")[0];
var imgcursor = getimgpoint(evt);
handle.setAttribute("cx", imgcursor.x);
handle.setAttribute("cy", imgcursor.y);
activeppoint.x = imgcursor.x;
activeppoint.y = imgcursor.y;
}
// delete point
function delpoint(point){
$("#pointhandles").removeChild(point);
var plist = document.getElementsByClassName("edit")[0].points;
for (var i=0; i<plist.length; i++){
if (plist[i] == activeppoint){plist.removeItem(i);}
}
if (plist.length < 3){
delpolygon($("#"+document.getElementsByClassName("edit")[0].id));
} else {
writepoints(document.getElementsByClassName("edit")[0].id);
editpoly($("#"+document.getElementsByClassName("edit")[0].id));
}
}
// delete all "lastmoved" points
function delactivepoints(){
var phandles = document.getElementsByClassName("pointhandle");
for (var i = phandles.length; i--;){
var phandle = phandles[i];
if (phandle.classList.contains("lastmoved")){
var plist = document.getElementsByClassName("edit")[0].points;
for (var j=plist.length; j--;){
if (phandle.cx.baseVal.value === plist[j].x && phandle.cy.baseVal.value === plist[j].y){
plist.removeItem(j);
}
}
phandle.parentElement.removeChild(phandle);
}
}
var plist = document.getElementsByClassName("edit")[0].points;
if (plist.length < 3){
delpolygon($("#"+document.getElementsByClassName("edit")[0].id));
} else {
writepoints(document.getElementsByClassName("edit")[0].id);
editpoly($("#"+document.getElementsByClassName("edit")[0].id));
}
}
// delete polygon
function delpolygon(polygon){
removeallpointhandles();
while (document.getElementsByClassName("linehandle").length){
$("#pointhandles").removeChild(document.getElementsByClassName("linehandle")[0]);
}
$("#group").removeChild(polygon);
deleteline(polygon.id);
}
// create new polygon
function drawline(evt, pid){
var pp = $("#"+pid).points;
var pos = getimgpoint(evt);
pp[1].x = pp[2].x = pos.x;
pp[3].y = pp[2].y = pos.y;
}
// on mouseup (region)
function unclickregion(evt, pid, rid){
$("#group").removeAttribute("onmousemove");
$("#group").removeAttribute("onmouseup");
createline(pid, rid);
editpoly($("#"+pid));
}
// on mousedown (region)
function clickregion(evt, region){
var startp = getimgpoint(evt);
var existing = [];
var lengths = [];
for (p of $("#group").getElementsByTagName("polygon")){
if (p.id.startsWith(evt.target.id + "_")){
existing.push(p.id.split("_l")[1]);
lengths.push(p.id.split("_l")[1].length);
}
}
var lineno = Math.max(...existing) + 1;
var len = Math.min(...lengths);
var svgns = $("#svg0").attributes.xmlns.value;
var newelement = document.createElementNS(svgns, 'polygon');
newelement.setAttribute("id",evt.target.id + "_l" + lineno.toString().padStart(len, "0"));
newelement.setAttribute("points",([startp.x,startp.y].join()+" ").repeat(4).slice(0,-1));
newelement.setAttribute("onclick","editpoly(this)");
newelement.classList.add("line");
newelement.classList.add("empty");
$("#group").appendChild(newelement);
$("#group").setAttribute("onmousemove","drawline(evt, '"+newelement.id+"')");
$("#group").setAttribute("onmouseup","unclickregion(evt, '"+newelement.id+"', '"+region.id+"')");
}
// on mouseup (point)
function unclickpoint(evt, pid){
$("#group").removeAttribute("onmousemove");
$("#group").removeAttribute("onmouseup");
$("#editor").style.cursor = "auto";
for (p of document.getElementsByClassName("movehandle")){p.classList.remove("movehandle");}
while (document.getElementsByClassName("linehandle").length){
$("#pointhandles").removeChild(document.getElementsByClassName("linehandle")[0]);
}
linehandles($("#"+pid), $("#pointhandles"));
writepoints(pid);
}
// on mousdown (point)
function clickpoint(evt, handle, pid){
for (p of $("#"+pid).points){
if (p.x == handle.getAttribute("cx") && p.y == handle.getAttribute("cy")){
var polypoint = p;
}
}
if (polypoint == null){return null};
$("#"+handle.id).classList.add("movehandle");
for (p of document.getElementsByClassName("lastmoved")){p.classList.remove("lastmoved");}
$("#"+handle.id).classList.add("lastmoved");
$("#group").setAttribute("onmouseup","unclickpoint(evt, '"+pid+"')");
$("#group").setAttribute("onmousemove", "dragcircle(evt, '"+pid+"')");
activepoint = handle;
activeppoint = polypoint;
$("#editor").style.cursor = "move";
}
// on mousedown (border)
function clickborder(evt, line, pid, pno){
var pos = getimgpoint(evt);
var polygon = $("#"+pid);
var svgns = $("#svg0").attributes.xmlns.value;
var newelement = document.createElementNS(svgns, 'circle');
var radius = 0.3 / ($("#editor").offsetWidth / $("#image").getAttribute("width")) + "em";
newelement.setAttribute("id", pid+"_p"+polygon.points.length);
newelement.setAttribute("class","pointhandle");
newelement.setAttribute("cx",pos.x);
newelement.setAttribute("cy",pos.y);
newelement.setAttribute("r", radius);
newelement.setAttribute("onmousedown","clickpoint(evt, this, '"+pid+"')");
$("#pointhandles").appendChild(newelement);
polygon.points.insertItemBefore(pos, pno);
clickpoint(evt, newelement, pid);
}
// draw handles on polygon border
function linehandles(polygonin, groupin){
var group = $("#"+groupin.id);
var svgns = $("#svg0").attributes.xmlns.value;
var polygon = $("#"+polygonin.id);
var radius = 0.3 / ($("#editor").offsetWidth / $("#image").getAttribute("width")) + "em";
for (var n = 0; n < polygon.points.length; n++){
var newelement = document.createElementNS(svgns, 'line');
newelement.setAttribute("class", "linehandle");
newelement.setAttribute("x1", polygon.points[n].x);
newelement.setAttribute("y1", polygon.points[n].y);
newelement.setAttribute("x2", polygon.points[(n+1)%polygon.points.length].x);
newelement.setAttribute("y2", polygon.points[(n+1)%polygon.points.length].y);
newelement.setAttribute("stroke-width", radius);
newelement.setAttribute("stroke", "transparent");
newelement.setAttribute("onmousedown","clickborder(evt, this, '"+polygon.id+"', '"+((n+1)%polygon.points.length)+"')");
group.insertBefore(newelement, group.children[0]);
}
}
// delete selction rectangle
function colselection(evt){
$("#pointhandles").removeChild($("#select"));
}
// draw rectangle around points and makr them ".lastmoved"
function drawselection(evt){
if ($("#select")){
var pp = $("#select").points;
var pos = getimgpoint(evt);
pp[1].x = pp[2].x = pos.x;
pp[3].y = pp[2].y = pos.y;
var xr = [pp[0].x, pos.x].sort(function(a, b){return a-b});
var yr = [pp[0].y, pos.y].sort(function(a, b){return a-b});
for (var phand of document.getElementsByClassName("pointhandle")){
var px = phand.cx.baseVal.value;
var py = phand.cy.baseVal.value;
if (xr[0] < px && px < xr[1] && yr[0] < py && py < yr[1]){
phand.classList.add("lastmoved");
} else {
phand.classList.remove("lastmoved");
}
}
}
}
// start selecting points
function selectpoints(evt, layer){
var startp = getimgpoint(evt);
var svgns = $("#svg0").attributes.xmlns.value;
var newelement = document.createElementNS(svgns, 'polygon');
newelement.setAttribute("id", "select");
newelement.setAttribute("points",([startp.x,startp.y].join()+" ").repeat(4).slice(0,-1));
newelement.classList.add("select");
$("#pointhandles").appendChild(newelement);
$("#selectlayer").setAttribute("onmouseup", "colselection(evt)");
$("#selectlayer").setAttribute("onmousemove", "drawselection(evt)");
}
// active handles on polygon; on click (polygon)
function editpoly(polygon) {
var pid = polygon.getAttribute("id");
var svgns = $("#svg0").attributes.xmlns.value;
for (p of document.getElementsByClassName("edit")){p.classList.remove("edit");}
$("#"+polygon.id).classList.add("edit");
removeallpointhandles();
var newgroup = document.createElementNS(svgns, 'g');
newgroup.setAttribute("id","pointhandles");
$("#group").appendChild(newgroup);
linehandles(polygon, newgroup);
var radius = 0.3 / ($("#editor").offsetWidth / $("#image").getAttribute("width")) + "em";
for (var n = 0; n < polygon.points.length; n++){
var newelement = document.createElementNS(svgns, 'circle');
newelement.setAttribute("id", pid+"_p"+n);
newelement.setAttribute("class","pointhandle");
newelement.setAttribute("cx",polygon.points[n].x);
newelement.setAttribute("cy",polygon.points[n].y);
newelement.setAttribute("r", radius);
newelement.setAttribute("onmousedown","clickpoint(evt, this, '"+pid+"')");
newgroup.appendChild(newelement);
}
}
// initialize polygons around text regions
function inittextregions() {
//textregions from file
var svgns = $("#svg0").attributes.xmlns.value;
var textregions = pagexml.getElementsByTagName("TextRegion");
for (var i=0; i<textregions.length; i++){
var points = textregions[i].getElementsByTagName("Coords")[0].getAttribute("points");
var id = textregions[i].id
var newelement = document.createElementNS(svgns, 'polygon');
newelement.setAttribute("id",id);
newelement.setAttribute("points",points);
newelement.setAttribute("onmousedown","clickregion(evt, this)");
newelement.classList.add("region");
$("#group").insertBefore(newelement, $("#group").children[1]);
}
}
// toggle editmode (mode=true on, mode=false off)
function editmode(mode) {
for (var p of document.getElementsByClassName("line")){
if (mode) {
p.setAttribute("onclick","editpoly(this)");
inittextregions();
} else {
removeallpointhandles();
for (p of document.getElementsByClassName("edit")){
p.classList.remove("edit");
}
for (p of document.getElementsByClassName("line")){
p.setAttribute("onclick","clickline(this)");
}
while (document.getElementsByClassName("region").length){
$("#group").removeChild(document.getElementsByClassName("region")[0]);
}
}
}
}
/////// END EDIT MODE
// zoom in to width of current line
function zoomsvg() {
var points = $("#"+$("#inputline").getAttribute("currentid")).points;
var scale = $("#editor").offsetWidth / $("#image").getAttribute("width");
var xarr = [];
var yarr = [];
for (i=0;i<points.length;i++){
xarr.push(points[i]["x"]);
yarr.push(points[i]["y"]);
}
var xmin = Math.min.apply(Math, xarr);
var xmax = Math.max.apply(Math, xarr);
var ymin = Math.min.apply(Math, yarr);
var ymax = Math.max.apply(Math, yarr);
$("#svg1").viewBox.baseVal.x = xmin;
$("#svg1").viewBox.baseVal.width = xmax-xmin;
if ((ymax-ymin) / (xmax-xmin) > $("#svg1").height.baseVal.value / $("#svg1").width.baseVal.value) {
$("#svg1").height.baseVal.value = ((ymax-ymin) / (xmax-xmin)) * $("#svg1").width.baseVal.value;
}
$("#svg2").viewBox.baseVal.x = xmin;
$("#svg2").viewBox.baseVal.width = xmax-xmin;
var newscale = $("#editor").offsetWidth / (xmax-xmin);
$("#inputbox").style.paddingLeft = "2px";
$("#inputbox").style.paddingRight = "2px";
var scalefont = $("#inputbox").style.direction == "rtl" ? 0.6 : 1.1;
$("#inputbox").style["font-size"] = (ymax-ymin)*scalefont * newscale + "px";
if ($("#inputline").textContent) {
resizefont(newscale * (xmax-xmin));
}
}
// show svg0 in svg1 up to y, the rest in svg2
function splitsvg(y) {
var img_x = $("#image").getAttribute("width");
var img_y = $("#image").getAttribute("height");
var scale = $("#editor").offsetWidth / img_x;
$("#svg1").setAttribute("viewBox", "0,0,"+img_x+"," + y);
$("#svg1").setAttribute("height", Math.round(scale * y));
$("#svg2").setAttribute("viewBox", "0,"+y+","+img_x+","+img_y);
$("#svg2").setAttribute("height", Math.round(scale * (img_y-y)));
}
// resize font size to improve alignment between text and image
function resizefont(len) {
var fontsize = parseFloat($("#inputbox").style.fontSize.split("px")[0]);
var sizefac = len / $("#inputline").offsetWidth;
$("#inputbox").style.fontSize = sizefac * fontsize + "px";
}
// toggle visibility of input and set position under line
function togglediv(min_x, max_x, min_y, max_y) {
var currentsplit = $("#svg1").viewBox.baseVal.height;
var scale = $("#editor").offsetWidth / $("#image").getAttribute("width");
$("#inputbox").style.display = $("#inputbox").style.display == "none" ? "block" : "none";
if ($("#inputbox").style.direction == "rtl"){
$("#inputbox").style.paddingRight = scale * ($("#image").getAttribute("width") - max_x) + "px";
$("#inputbox").style.paddingLeft = "2px";
} else {
$("#inputbox").style.paddingRight = "2px";
$("#inputbox").style.paddingLeft = scale * min_x + "px";
}
if (max_y != currentsplit){
splitsvg(max_y);
$("#inputbox").style.display = "block";
var scalefont = $("#inputbox").style.direction == "rtl" ? 0.6 : 1.1;
$("#inputbox").style["font-size"] = (max_y-min_y)*scalefont * scale + "px";
if ($('#inputline').textContent) {
resizefont(scale * (max_x-min_x));
}
} else {
splitsvg($("#image").getAttribute("height"));
}
}
// return pagexml namespace
function resolver() {
return pagexml.firstChild.attributes.xmlns.value;
}
// get the lowest index of the TextEquivs for a line
function get_lowest_index(lineid) {
var xpath = '//ns:TextLine[@id="'+lineid+'"]/ns:TextEquiv/@index[not(. > //ns:TextLine[@id="'+lineid+'"]/ns:TextEquiv/@index)]';
var res = pagexml.evaluate(xpath, pagexml, resolver, XPathResult.ANY_TYPE, null );
return res.iterateNext();
}
// get bounding box from line points, set text content and activate inputline
function clickline(link) {
var inputline = $("#inputline");
if (link==null){return false;}
var polygon = link;
if (polygon==null){return false;}
// get points as array
var points = polygon.points;
var xarr = [];
var yarr = [];
for (i=0;i<points.length;i++){
xarr.push(points[i]["x"]);
yarr.push(points[i]["y"]);
}
// get and set text
var lindex = get_lowest_index(polygon.id);
var ix = lindex ? lindex.value : "0";
var textequiv = pagexml.getElementById(polygon.id).querySelector('TextEquiv[index="'+ix+'"]');
$("#inputline").textContent = textequiv ? textequiv.firstElementChild.textContent : "";
// get and set comments
var comment = pagexml.getElementById(polygon.id).attributes.comments;
$("#commentline").innerHTML = comment ? comment.value : "";
$("#commentline").style.display = comment && comment.value ? "block" : "none";
// activate input
togglediv(Math.min.apply(Math, xarr), Math.max.apply(Math, xarr),
Math.min.apply(Math, yarr), Math.max.apply(Math, yarr));
$("#inputline").focus();
$("#inputline").setAttribute("currentid", polygon.id);
//window.scrollBy(0, inputline.getBoundingClientRect().top - (window.innerHeight>>1));
}
// save current text input to pagexml
function savetext() {
var ns = pagexml.firstChild.attributes.xmlns.value;
var cur = $("#inputline").getAttribute("currentid");
var xmlline = pagexml.getElementById(cur);
var textequiv = pagexml.createElementNS(ns, "TextEquiv");
var unicode = pagexml.createElementNS(ns, "Unicode");
var oldtextequiv = pagexml.getElementById(cur).querySelector('TextEquiv[index="0"]');
if (oldtextequiv){
xmlline.removeChild(oldtextequiv);
}
textequiv.setAttribute("index","0");
unicode.textContent = $("#inputline").textContent;
textequiv.appendChild(unicode);
xmlline.appendChild(textequiv);
// save comments
if ($("#commentline").style.display != "none" && document.activeElement.id == "commentline"){
savecomment();
// prevent subsequent blur event from saving next line
$("#commentline").setAttribute("dontsave", "true");
}
clickline(document.getElementById(cur).nextSibling);
document.getElementById(cur).classList.add("gt");
}
// save comment (@ blur of comment line)
function savecomment(e) {
if ($("#commentline").getAttribute("dontsave")){
// saving already done in savetext()
$("#commentline").removeAttribute("dontsave");
} else {
var cur = inputline.getAttribute("currentid");
var comment = $("#commentline").innerHTML;
if (comment) {
pagexml.getElementById(cur).setAttribute("comments", comment);
$("#"+cur).classList.add("comment");
} else {
pagexml.getElementById(cur).removeAttribute("comments");
$("#"+cur).classList.remove("comment");
}
}
}
// load the image file and initialize svg attributes
function initpage(file, x, y, direction) {
$("body").style.direction = direction;
$("#inputbox").style.direction = direction;
$('#image').setAttribute("x","0");
$('#image').setAttribute("y","0");
$('#image').setAttribute("width",x);
$('#image').setAttribute("height",y);
$('#image').setAttribute('href', file);
// init split svgs
var scale = $("#editor").offsetWidth / x;
$("#svg1").setAttribute("width", scale * x)
$("#svg1").setAttribute("height", scale * y)
$("#svg1").setAttribute("viewBox", "0,0,+"+x+"," + y);
$("#svg1").setAttribute("preserveAspectRatio", "xMinYMax slice");
$("#svg2").setAttribute("width", scale * x);
$("#svg2").setAttribute("height", "0");
$("#svg2").setAttribute("preserveAspectRatio", "xMinYMin slice");
}
// initialize text line regions
function initregions() {
//textregions from file
var svgns = $("#svg0").attributes.xmlns.value;
var textregions = pagexml.getElementsByTagName("TextLine");
for (var i=0; i<textregions.length; i++){
var points = textregions[i].getElementsByTagName("Coords")[0].getAttribute("points");
var id = textregions[i].id
var textequiv = textregions[i].querySelector('TextEquiv[index="0"]');
var ocr = textregions[i].querySelector('TextEquiv');
var comments = textregions[i].getAttribute("comments");
// create polygons around lines
var newelement = document.createElementNS(svgns, 'polygon');
newelement.setAttribute("id",id);
newelement.setAttribute("points",points);
newelement.setAttribute("onclick","clickline(this)");
newelement.classList.add("line");
var status = "empty";
if (textequiv){ status = "gt";
} else if (ocr){status = "ocr";}
newelement.classList.add(status);
if (comments){
newelement.classList.add("comment");
}
$("#group").appendChild(newelement);
}
}
// event handler for pagexml request
function pagexmlOnload() {
pagexml = this.responseXML;
var folder = this.filename.substring(0, this.filename.lastIndexOf("/")+1);
var imgFile = pagexml.getElementsByTagName("Page")[0].attributes["imageFilename"].nodeValue;
imgFile = folder + imgFile;
var image_x = pagexml.getElementsByTagName("Page")[0].attributes["imageWidth"].nodeValue;
var image_y = pagexml.getElementsByTagName("Page")[0].attributes["imageHeight"].nodeValue;
//init image width etc. and regions
initpage(imgFile, image_x, image_y, this.direction);
initregions();
}
// get xml file
function getxml(filename, direction){
var xmlhttp=new XMLHttpRequest();
xmlhttp.direction = direction;
xmlhttp.filename = filename;
xmlhttp.open("GET", filename);
xmlhttp.setRequestHeader("Content-Type", "text/xml");
xmlhttp.addEventListener("load", pagexmlOnload);
xmlhttp.send();
}
// Get file and direction parameters from URL
function uriparams() {
var vars = window.location.search.substring(1).split('&');
for (var i = 0; i < vars.length; i++) {
var pair = vars[i].split('=');
if (decodeURIComponent(pair[0]) == "pagexml") {
var filename = decodeURIComponent(pair[1]);
}
if (decodeURIComponent(pair[0]) == "direction") {
var direction = decodeURIComponent(pair[1]);
}
}
if (typeof(direction) == "undefined"){
var direction = "ltr";
var selfname = window.location.pathname.split("/").pop();
history.pushState("", "", selfname + window.location.search + "&direction=" + direction);
}
return [filename, direction];
}
// send pagexml file as download
function downloadxml() {
var filename = pagexml.URL.substr(pagexml.URL.lastIndexOf('/') + 1)
s = new XMLSerializer;
var string = s.serializeToString(pagexml);
var element = document.createElement('a');
element.setAttribute('href', 'data:text/xml;charset=utf-8,' + encodeURIComponent(string));
element.setAttribute('download', filename);
element.style.display = 'none';
document.body.appendChild(element);
element.click();
document.body.removeChild(element);
}
// change writing direction
function setdirection(dir) {
var filename = window.location.search.substring(window.location.search.lastIndexOf("pagexml=")+8).split("&")[0];
var ix = window.location.search.lastIndexOf("direction=");
if (ix > -1){
var searchstr = window.location.search.substring(0, ix-1);
} else {
var searchstr = window.location.search;
}
var selfname = window.location.pathname.split("/").pop();
history.pushState("", "", selfname + searchstr + "&direction=" + dir);
$("body").style.direction = dir;
$("#inputbox").style.direction = dir;
togglediv(0, 0, 0, 0); // to close input line and reset margins
}
// find number in filename, add value of variable dir and load new page
function changepage(dir) {
$("#inputbox").style.display = "none";
if (dir) {
var filename = window.location.search.substring(window.location.search.lastIndexOf("pagexml=")+8).split("&")[0];
var numberpart = filename.match(/\d+/)[0];
var newnumber = (parseInt(numberpart) + dir).toString().padStart(numberpart.length, "0")
var newfilename = filename.slice(0, filename.indexOf(numberpart[0]))
+ newnumber
+ filename.slice(1+filename.lastIndexOf(numberpart.slice(-1)));
var url = document.URL.split("pagexml=");
var urlrest = url[1].slice(url[1].indexOf("&"));
var selfname = window.location.pathname.split("/").pop();
history.pushState("", "", selfname + "?pagexml=" + newfilename + urlrest);
}
var [filename, direction] = uriparams();
while ($("#group").childElementCount > 1){
$("#group").removeChild($("#group").getElementsByTagName("polygon")[0])
}
$("#image").removeAttribute("href")
getxml(filename, direction);
splitsvg($("#image").height.baseVal.value);
}
function reload(e) {
changepage(0);
}
// keyboard shortcuts for text input
function shortcuts(e) {
if (e.code == "ArrowUp" && e.shiftKey){
e.preventDefault();
$("#inputline").focus();
}
if (e.code == "ArrowDown" && e.shiftKey){
e.preventDefault();
$("#commentline").style.display = "block";
$("#commentline").focus();
}
if (e.code.startsWith("Digit") && $("#vkeyboard").style.display == "block"){
e.preventDefault();
var sel = window.getSelection();
var pos = sel.focusOffset -1;
var text = sel.focusNode.data;
if (pos < 0) pos = 0;
var char = text[pos];
if (char in virtualkeyboard){
var nmb = parseInt(e.code[5]);
if (nmb == 0){ nmb = 10; }
if (nmb > virtualkeyboard[char].length){ nmb = 1; }
var insert = virtualkeyboard[char][nmb-1];
sel.focusNode.data = text.slice(0,pos)+insert+text.slice(pos+1);
// reset caret
var range = document.createRange();
range.setStart(sel.focusNode, pos+insert.length);
range.collapse(true);
sel.removeAllRanges();
sel.addRange(range);
}
}
if (e.code == "Insert" && e.shiftKey){
e.preventDefault();
var sel = window.getSelection();
var pos = sel.focusOffset -1;
var text = sel.focusNode.data;
if (pos < 0) pos = 0;
var char = sel.focusNode.data[pos];
if (char in virtualkeyboard){
var alt = virtualkeyboard[char]
var displaykeys = "";
for (var i=0; i<alt.length; i++){
displaykeys += "¹²³⁴⁵⁶⁷⁸⁹⁰"[i] + alt[i] + " ";
}
$("#vkeyboard").innerText = displaykeys;
$("#vkeyboard").style.display = "block";
}
}
if (e.code == "Enter" && e.shiftKey){
e.preventDefault();
savetext();
}
if (e.code == "Enter" && document.activeElement.id == "inputline"){
e.preventDefault();
}
if (e.code == "Tab"){
// save comments
if ($("#commentline").style.display != "none" && document.activeElement.id == "commentline"){
savecomment();
// prevent subsequent blur event from saving next line
$("#commentline").setAttribute("dontsave", "true");
}
var cur = $("#inputline").getAttribute("currentid")
var link = document.getElementById(cur)
// End of page shout be caught here, not in clickline
if (e.shiftKey){
clickline(link.previousSibling);
}else{
clickline(link.nextSibling);
}
e.preventDefault();
}
}
// Keyup shortcut to close toggle virtual keyboard
function shortcuts_up(e) {
if (e.code == "Insert" && $("#vkeyboard").style.display != "none"){
$("#vkeyboard").style.display = "none";
}
}
// keyboard shortcuts(global
function shortcuts_global(e) {
if (e.code == "Space" && e.ctrlKey){
e.preventDefault();
zoomsvg();
}
if (e.code == "KeyS" && e.ctrlKey){
e.preventDefault();
downloadxml();
}
if (e.code == "PageDown" && e.shiftKey){
e.preventDefault();
changepage(1);
}
if (e.code == "PageUp" && e.shiftKey){
e.preventDefault();
changepage(-1);
}
if (e.code == "ArrowRight" && e.shiftKey && e.ctrlKey){
e.preventDefault();
setdirection("rtl");
}
if (e.code == "ArrowLeft" && e.shiftKey && e.ctrlKey){
e.preventDefault();
setdirection("ltr");
}
if (e.code == "KeyE" && e.ctrlKey){
e.preventDefault();
editmode(document.getElementsByClassName("line")[0].attributes.onclick.value.startsWith("clickline"));
}
if (e.code == "Delete" && document.getElementsByClassName("lastmoved").length){
e.preventDefault();
delactivepoints();
//delpoint(document.getElementsByClassName("lastmoved")[0]);
} else if (e.code == "Delete" && document.getElementsByClassName("edit").length){
e.preventDefault();
delpolygon(document.getElementsByClassName("edit")[0]);
}
if (e.key == "Shift" && $("#pointhandles")){
var svgns = $("#svg0").attributes.xmlns.value;
var rect = document.createElementNS(svgns, 'rect');
rect.setAttribute("id", "selectlayer");
rect.setAttribute("x",0);
rect.setAttribute("y",0);
rect.setAttribute("width", $("#image").width.baseVal.value);
rect.setAttribute("height", $("#image").height.baseVal.value);
rect.setAttribute("onmousedown", "selectpoints(evt, this)");
$("#pointhandles").appendChild(rect);
}
}
function shortcuts_global_up(e) {
if (e.key == "Shift" && $("#selectlayer")){
if ($("#select")){ $("#pointhandles").removeChild($("#select"));}
$("#pointhandles").removeChild($("#selectlayer"));
}
}
//
// Main function
//
function main() {
// Add event handlers
$("#inputbox").addEventListener("keydown", shortcuts, false);
$("#inputbox").addEventListener("keyup", shortcuts_up, false);
$("#commentline").addEventListener("blur", savecomment, false);
document.addEventListener("keydown", shortcuts_global, false);
document.addEventListener("keyup", shortcuts_global_up, false);
window.onpopstate = reload;
// Get filename and dir, fetch pagexml
var [filename, direction] = uriparams();
getxml(filename, direction);
}
</script>
</head>
<body onload="main();">
<div id="editor">
<!-- invisible svg -->
<svg id="svg0" xmlns="http://www.w3.org/2000/svg">
<g id="group"><image id="image" height="0px" width="0px"/></g>
</svg>
<!-- upper part of svg -->
<svg id="svg1"><use href="#group"/></svg>
<!-- text input -->
<div id="inputbox">
<span id="inputline" contenteditable="true"></span>
<span id="commentline" contenteditable="true"></span>
<span id="vkeyboard"></span>
</div>
<!-- lower part of svg -->
<svg id="svg2"><use href="#group"/></svg>
</div>
</body>
</html>