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scripts.js
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/*
* Summer html image map creator
* http://github.com/summerstyle/summer
*
* Copyright 2013 Vera Lobacheva (summerstyle.ru)
* Released under the GPL3 (GPL3.txt)
*
* Thu May 15 2013 15:15:27 GMT+0400
*/
"use strict";
function SummerHtmlImageMapCreator() {
/* Utilities */
var utils = {
offsetX : function(node) {
var box = node.getBoundingClientRect(),
scroll = window.pageXOffset;
return Math.round(box.left + scroll);
},
offsetY : function(node) {
var box = node.getBoundingClientRect(),
scroll = window.pageYOffset;
return Math.round(box.top + scroll);
},
rightX : function(x) {
return x-app.getOffset('x');
},
rightY : function(y) {
return y-app.getOffset('y');
},
trim : function(str) {
return str.replace(/^\s+|\s+$/g, '');
},
id : function (str) {
return document.getElementById(str);
},
hide : function(node) {
node.style.display = 'none';
return this;
},
show : function(node) {
node.style.display = 'block';
return this;
},
encode : function(str) {
return str.replace(/</g, '<').replace(/>/g, '>');
},
foreach : function(arr, func) {
for(var i = 0, count = arr.length; i < count; i++) {
func(arr[i], i);
}
},
foreachReverse : function(arr, func) {
for(var i = arr.length - 1; i >= 0; i--) {
func(arr[i], i);
}
},
debug : (function() {
var output = document.getElementById('debug');
return function() {
output.innerHTML = [].join.call(arguments, ' ');
}
})(),
stopEvent : function(e) {
e.stopPropagation();
e.preventDefault();
return this;
},
addClass : function(node, str) {
// node.className.baseVal for SVG-elements
// or
// node.className for HTML-elements
var is_svg = node.className.baseVal !== undefined ? true : false,
arr = is_svg ? node.className.baseVal.split(' ') : node.className.split(' '),
isset = false;
utils.foreach(arr, function(x) {
if(x === str) {
isset = true;
}
});
if (!isset) {
arr.push(str);
is_svg ? node.className.baseVal = arr.join(' ') : node.className = arr.join(' ');
}
return this;
},
removeClass : function(node, str) {
var is_svg = node.className.baseVal !== undefined ? true : false,
arr = is_svg ? node.className.baseVal.split(' ') : node.className.split(' '),
isset = false;
utils.foreach(arr, function(x, i) {
if(x === str) {
isset = true;
arr.splice(i--, 1);
}
});
if (isset) {
is_svg ? node.className.baseVal = arr.join(' ') : node.className = arr.join(' ');
}
return this;
},
hasClass : function(node, str) {
var is_svg = node.className.baseVal !== undefined ? true : false,
arr = is_svg ? node.className.baseVal.split(' ') : node.className.split(' '),
isset = false;
utils.foreach(arr, function(x) {
if(x === str) {
isset = true;
}
});
return isset;
},
extend : function(obj, options) {
var target = {};
for (name in obj) {
if(obj.hasOwnProperty(name)) {
target[name] = options[name] ? options[name] : obj[name];
}
}
return target;
},
supportFileReader : (function() {
return (typeof FileReader !== 'undefined');
})()
};
/* Main object */
var app = (function() {
var body = document.getElementsByTagName('body')[0],
wrapper = utils.id('wrapper'),
svg = utils.id('svg'),
img = utils.id('img'),
img_src = null,
container = utils.id('image'),
about = utils.id('about'),
coords_info = utils.id('coords'),
offset = {x: 0, y: 0},
shape = null,
is_draw = false,
mode = null, // drawing || editing || preview
objects = [],
new_area = null,
selected_area = null,
edit_type,
events = [],
map,
filename,
KEYS = {
F1 : 112,
ESC : 27,
TOP : 38,
BOTTOM : 40,
LEFT : 37,
RIGHT : 39,
DELETE : 46,
I : 73,
S : 83,
C : 67
};
function recalcOffsetValues() {
offset.x = utils.offsetX(container);
offset.y = utils.offsetY(container);
};
/* Get offset value */
window.addEventListener('resize', recalcOffsetValues, false);
/* Disable selection */
container.addEventListener('mousedown', function(e) { e.preventDefault(); }, false);
/* Disable image dragging */
img.addEventListener('dragstart', function(e){
e.preventDefault();
}, false);
/* Display cursor coordinates info */
container.addEventListener('mousemove', function(e){
coords_info.innerHTML = 'x: ' + utils.rightX(e.pageX) + ', ' + 'y: ' + utils.rightY(e.pageY);
}, false);
container.addEventListener('mouseleave', function(){
coords_info.innerHTML = '';
}, false);
/* Add mousedown event for svg */
function onSvgMousedown(e) {
if (mode === 'editing') {
if (e.target.parentNode.tagName === 'g') {
info.unload();
selected_area = e.target.parentNode.obj;
app.deselectAll();
selected_area.select();
selected_area.delta = {
'x' : e.pageX,
'y' : e.pageY
};
if (utils.hasClass(e.target, 'helper')) {
var helper = e.target;
edit_type = helper.action;
if (helper.n >= 0) { // if typeof selected_area == polygon
selected_area.selected_point = helper.n;
}
app.addEvent(container, 'mousemove', selected_area.onEdit)
.addEvent(container, 'mouseup', selected_area.onEditStop);
} else if (e.target.tagName === 'rect' || e.target.tagName === 'circle' || e.target.tagName === 'polygon') {
edit_type = 'move';
app.addEvent(container, 'mousemove', selected_area.onEdit)
.addEvent(container, 'mouseup', selected_area.onEditStop);
};
} else {
app.deselectAll();
info.unload();
};
};
}
container.addEventListener('mousedown', onSvgMousedown, false);
/* Add click event for svg */
function onSvgClick(e) {
if (mode === 'drawing' && !is_draw && shape) {
code.hide();
switch (shape) {
case 'rect':
new_area = new Rect(utils.rightX(e.pageX), utils.rightY(e.pageY));
app.addEvent(container, 'mousemove', new_area.onDraw)
.addEvent(container, 'click', new_area.onDrawStop);
break;
case 'circle':
new_area = new Circle(utils.rightX(e.pageX), utils.rightY(e.pageY));
app.addEvent(container, 'mousemove', new_area.onDraw)
.addEvent(container, 'click', new_area.onDrawStop);
break;
case 'polygon':
new_area = new Polygon(utils.rightX(e.pageX), utils.rightY(e.pageY));
app.addEvent(container, 'mousemove', new_area.onDraw)
.addEvent(container, 'click', new_area.onDrawAddPoint)
.addEvent(document, 'keydown', new_area.onDrawStop)
.addEvent(new_area.helpers[0].helper, 'click', new_area.onDrawStop);
break;
};
};
};
container.addEventListener('click', onSvgClick, false);
/* Bug with keydown event for SVG in Opera browser
(when hot keys don't work after focusing on svg element) */
function operaSvgKeydownBugFix() {
window.focus();
}
if (window.navigator.appName === 'Opera') {
container.addEventListener('mousedown', operaSvgKeydownBugFix, false);
container.addEventListener('mouseup', operaSvgKeydownBugFix, false);
container.addEventListener('click', operaSvgKeydownBugFix, false);
container.addEventListener('dblclick', operaSvgKeydownBugFix, false);
};
/* Add dblclick event for svg */
function onAreaDblClick(e) {
if (mode === 'editing') {
if (e.target.tagName === 'rect' || e.target.tagName === 'circle' || e.target.tagName === 'polygon') {
selected_area = e.target.parentNode.obj;
info.load(selected_area, e.pageX, e.pageY);
};
};
};
container.addEventListener('dblclick', onAreaDblClick, false);
/* Add keydown event for document */
function onDocumentKeyDown(e) {
var ctrlDown = e.ctrlKey || e.metaKey // PC || Mac
switch (e.keyCode) {
case KEYS.F1: /* F1 key */
help.show();
e.preventDefault();
break;
case KEYS.ESC: /* ESC key */
help.hide();
if (is_draw) {
is_draw = false;
new_area.remove();
objects.pop();
app.removeAllEvents();
} else if (mode === 'editing') {
selected_area.redraw();
app.removeAllEvents();
};
break;
case KEYS.TOP: /* Top arrow key */
if (mode === 'editing' && selected_area) {
selected_area.setParams(selected_area.dynamicEdit(selected_area['move'](0, -1)));
e.preventDefault();
}
break;
case KEYS.BOTTOM: /* Bottom arrow key */
if (mode === 'editing' && selected_area) {
selected_area.setParams(selected_area.dynamicEdit(selected_area['move'](0, 1)));
e.preventDefault();
}
break;
case KEYS.LEFT: /* Left arrow key */
if (mode === 'editing' && selected_area) {
selected_area.setParams(selected_area.dynamicEdit(selected_area['move'](-1, 0)));
e.preventDefault();
}
break;
case KEYS.RIGHT: /* Right arrow key */
if (mode === 'editing' && selected_area) {
selected_area.setParams(selected_area.dynamicEdit(selected_area['move'](1, 0)));
e.preventDefault();
}
break;
case KEYS.DELETE: /* DELETE key */
if (mode === 'editing' && selected_area) {
app.removeObject(selected_area);
selected_area = null;
info.unload();
}
break;
case KEYS.I: /* i (edit info) key */
if (mode === 'editing' && selected_area) {
var params = selected_area.params,
x = params.x || params.cx || params[0],
y = params.y || params.cy || params[1];
info.load(selected_area, x + app.getOffset('x'), y + app.getOffset('y'));
}
break;
case KEYS.S: /* s (save) key */
app.saveInLocalStorage();
break;
case KEYS.C: /* CTRL+C copy */
if (mode === 'editing' && selected_area && ctrlDown) {
var Constructor = null,
area_params = selected_area.toJSON(),
area;
switch (area_params.type) {
case 'rect':
Constructor = Rect;
break;
case 'circle':
Constructor = Circle;
break;
case 'polygon':
Constructor = Polygon;
break;
}
if (Constructor) {
Constructor.createFromSaved(area_params);
selected_area.setParams(selected_area.move(10, 10));
selected_area.redraw();
}
}
break;
}
}
document.addEventListener('keydown', onDocumentKeyDown, false);
/* Returned object */
return {
saveInLocalStorage : function() {
var obj = {
areas : [],
img : img_src
};
utils.foreach(objects, function(x) {
obj.areas.push(x.toJSON());
});
window.localStorage.setItem('SummerHTMLImageMapCreator', JSON.stringify(obj));
alert('Saved');
return this;
},
loadFromLocalStorage : function() {
var str = window.localStorage.getItem('SummerHTMLImageMapCreator'),
obj = JSON.parse(str),
areas = obj.areas;
this.loadImage(obj.img);
utils.foreach(areas, function(x) {
switch (x.type) {
case 'rect':
if (x.coords.length === 4) {
Rect.createFromSaved({
coords : x.coords,
href : x.href,
alt : x.alt,
title : x.title
});
}
break;
case 'circle':
if (x.coords.length === 3) {
Circle.createFromSaved({
coords : x.coords,
href : x.href,
alt : x.alt,
title : x.title
});
}
break;
case 'polygon':
if (x.coords.length >= 6 && x.coords.length % 2 === 0) {
Polygon.createFromSaved({
coords : x.coords,
href : x.href,
alt : x.alt,
title : x.title
});
}
break;
}
});
return this;
},
hide : function() {
utils.hide(wrapper);
return this;
},
show : function() {
utils.show(wrapper);
return this;
},
recalcOffsetValues: function() {
recalcOffsetValues();
return this;
},
setDimensions : function(width, height) {
svg.setAttribute('width', width);
svg.setAttribute('height', height);
container.style.width = width + 'px';
container.style.height = height + 'px';
return this;
},
loadImage : function(url) {
get_image.showLoadIndicator();
img.src = url;
img_src = url;
img.onload = function() {
get_image.hideLoadIndicator().hide();
app.show()
.setDimensions(img.width, img.height)
.recalcOffsetValues();
};
return this;
},
preview : (function() {
img.setAttribute('usemap', '#map');
map = document.createElement('map');
map.setAttribute('name', 'map');
container.appendChild(map);
return function() {
info.unload();
app.setShape(null);
utils.hide(svg);
map.innerHTML = app.getHTMLCode();
code.print();
return this;
}
})(),
hidePreview : function() {
utils.show(svg);
map.innerHTML = '';
return this;
},
addNodeToSvg : function(node) {
svg.appendChild(node);
return this;
},
removeNodeFromSvg : function(node) {
svg.removeChild(node);
return this;
},
getOffset : function(arg) {
switch(arg) {
case 'x':
return offset.x;
break;
case 'y':
return offset.y;
break;
}
return undefined;
},
clear : function(){
//remove all areas
objects.length = 0;
while(svg.childNodes[0]) {
svg.removeChild(svg.childNodes[0]);
}
code.hide();
info.unload();
return this;
},
removeObject : function(obj) {
utils.foreach(objects, function(x, i) {
if(x === obj) {
objects.splice(i, 1);
}
});
obj.remove();
return this;
},
deselectAll : function() {
utils.foreach(objects, function(x) {
x.deselect();
});
return this;
},
getIsDraw : function() {
return is_draw;
},
setIsDraw : function(arg) {
is_draw = arg;
return this;
},
setMode : function(arg) {
mode = arg;
return this;
},
getMode : function() {
return mode;
},
setShape : function(arg) {
shape = arg;
return this;
},
getShape : function() {
return shape;
},
addObject : function(object) {
objects.push(object);
return this;
},
getNewArea : function() {
return new_area;
},
resetNewArea : function() {
new_area = null;
return this;
},
getSelectedArea : function() {
return selected_area;
},
setSelectedArea : function(obj) {
selected_area = obj;
return this;
},
getEditType : function() {
return edit_type;
},
setFilename : function(str) {
filename = str;
return this;
},
setEditClass : function() {
utils.removeClass(container, 'draw')
.addClass(container, 'edit');
return this;
},
setDrawClass : function() {
utils.removeClass(container, 'edit')
.addClass(container, 'draw');
return this;
},
setDefaultClass : function() {
utils.removeClass(container, 'edit')
.removeClass(container, 'draw');
return this;
},
addEvent : function(target, eventType, func) {
events.push(new AppEvent(target, eventType, func));
return this;
},
removeAllEvents : function() {
utils.foreach(events, function(x) {
x.remove();
});
events.length = 0;
return this;
},
getHTMLCode : function(arg) {
var html_code = '';
if (arg) {
if (!objects.length) {
return '0 objects';
}
html_code += utils.encode('<img src="' + filename + '" alt="" usemap="#map" />') +
'<br />' + utils.encode('<map name="map">') + '<br />';
utils.foreachReverse(objects, function(x) {
html_code += ' ' + utils.encode(x.toString()) + '<br />';
});
html_code += utils.encode('</map>');
} else {
utils.foreachReverse(objects, function(x) {
html_code += x.toString();
});
}
return html_code;
}
};
})();
/* Help block */
var help = (function() {
var block = utils.id('help'),
overlay = utils.id('overlay'),
close_button = block.querySelector('.close_button');
function hide() {
utils.hide(block);
utils.hide(overlay);
}
function show() {
utils.show(block);
utils.show(overlay);
}
overlay.addEventListener('click', hide, false);
close_button.addEventListener('click', hide, false);
return {
show : show,
hide : hide
};
})();
/* For html code of created map */
var code = (function(){
var block = utils.id('code'),
content = utils.id('code_content'),
close_button = block.querySelector('.close_button');
close_button.addEventListener('click', function(e) {
utils.hide(block);
e.preventDefault();
}, false);
return {
print: function() {
content.innerHTML = app.getHTMLCode(true);
utils.show(block);
},
hide: function() {
utils.hide(block);
}
};
})();
/* Edit selected area info */
var info = (function() {
var form = utils.id('edit_details'),
header = form.querySelector('h5'),
href_attr = utils.id('href_attr'),
alt_attr = utils.id('alt_attr'),
title_attr = utils.id('title_attr'),
save_button = utils.id('save_details'),
close_button = form.querySelector('.close_button'),
sections = form.querySelectorAll('p'),
obj,
x,
y,
temp_x,
temp_y;
function changedReset() {
utils.removeClass(form, 'changed');
utils.foreach(sections, function(x) {
utils.removeClass(x, 'changed');
});
}
function save(e) {
obj.href = href_attr.value;
obj.alt = alt_attr.value;
obj.title = title_attr.value;
obj.href ? obj.with_href() : obj.without_href();
changedReset();
e.preventDefault();
};
function unload() {
obj = null;
changedReset();
utils.hide(form);
}
function setCoords(x, y) {
form.style.left = (x + 5) + 'px';
form.style.top = (y + 5) + 'px';
}
function moveEditBlock(e) {
setCoords(x + e.pageX - temp_x, y + e.pageY - temp_y);
}
function stopMoveEditBlock(e) {
x = x + e.pageX - temp_x;
y = y + e.pageY - temp_y;
setCoords(x, y);
app.removeAllEvents();
}
function change() {
utils.addClass(form, 'changed');
utils.addClass(this.parentNode, 'changed');
}
save_button.addEventListener('click', save, false);
href_attr.addEventListener('keydown', function(e) { e.stopPropagation(); }, false);
alt_attr.addEventListener('keydown', function(e) { e.stopPropagation(); }, false);
title_attr.addEventListener('keydown', function(e) { e.stopPropagation(); }, false);
href_attr.addEventListener('change', change, false);
alt_attr.addEventListener('change', change, false);
title_attr.addEventListener('change', change, false);
close_button.addEventListener('click', unload, false);
header.addEventListener('mousedown', function(e) {
temp_x = e.pageX,
temp_y = e.pageY;
app.addEvent(document, 'mousemove', moveEditBlock);
app.addEvent(header, 'mouseup', stopMoveEditBlock);
e.preventDefault();
}, false);
return {
load : function(object, new_x, new_y) {
obj = object;
href_attr.value = object.href ? object.href : '';
alt_attr.value = object.alt ? object.alt : '';
title_attr.value = object.title ? object.title : '';
utils.show(form);
if (new_x && new_y) {
x = new_x;
y = new_y;
setCoords(x, y);
}
},
unload : unload
};
})();
/* Load areas from html code */
var from_html_form = (function() {
var form = utils.id('from_html_wrapper'),
code_input = utils.id('code_input'),
load_button = utils.id('load_code_button'),
close_button = form.querySelector('.close_button'),
regexp_area = /<area(?=.*? shape="(rect|circle|poly)")(?=.*? coords="([\d ,]+?)")[\s\S]*?>/gmi,
regexp_href = / href="([\S\s]+?)"/,
regexp_alt = / alt="([\S\s]+?)"/,
regexp_title = / title="([\S\s]+?)"/;
function test(str) {
var result_area,
result_href,
result_alt,
result_title,
type,
coords,
area,
href,
alt,
title,
success = false;
if (str) {
result_area = regexp_area.exec(str);
while (result_area) {
success = true;
area = result_area[0];
type = result_area[1];
coords = result_area[2].split(/ ?, ?/);
result_href = regexp_href.exec(area);
if (result_href) {
href = result_href[1];
} else {
href = '';
}
result_alt = regexp_alt.exec(area);
if (result_alt) {
alt = result_alt[1];
} else {
alt = '';
}
result_title = regexp_title.exec(area);
if (result_title) {
title = result_title[1];
} else {
title = '';
}
for (var i = 0, len = coords.length; i < len; i++) {
coords[i] = Number(coords[i]);
}
switch (type) {
case 'rect':
if (coords.length === 4) {
Rect.createFromSaved({
coords : coords,
href : href,
alt : alt,
title : title
});
}
break;
case 'circle':
if (coords.length === 3) {
Circle.createFromSaved({
coords : coords,
href : href,
alt : alt,
title : title
});
}
break;
case 'poly':
if (coords.length >= 6 && coords.length % 2 === 0) {
Polygon.createFromSaved({
coords : coords,
href : href,
alt : alt,
title : title
});
}
break;
}
result_area = regexp_area.exec(str);
}
if (success) {
hide();
}
}
}
function load(e) {
test(code_input.value);
e.preventDefault();
};
function hide() {
utils.hide(form);
}
load_button.addEventListener('click', load, false);
close_button.addEventListener('click', hide, false);
return {
show : function() {
code_input.value = '';
utils.show(form);
},
hide : hide
};
})();
/* Get image form */
var get_image = (function() {
var block = utils.id('get_image_wrapper'),
loading_indicator = utils.id('loading'),
button = utils.id('button'),
filename = null,
last_changed = null;
// Drag'n'drop - the first way to loading an image
var drag_n_drop = (function() {
var dropzone = utils.id('dropzone'),
dropzone_clear_button = dropzone.querySelector('.clear_button'),
sm_img = utils.id('sm_img');
if (!utils.supportFileReader) { // For IE9
utils.hide(utils.id('file_reader_support'));
};
function testFile(type) {
switch (type) {
case 'image/jpeg':
case 'image/gif':
case 'image/png':
return true;
break;
}
return false;
}
dropzone.addEventListener('dragover', function(e){
utils.stopEvent(e);
}, false);
dropzone.addEventListener('dragleave', function(e){
utils.stopEvent(e);
}, false);
dropzone.addEventListener('drop', function(e){
utils.stopEvent(e);
var reader = new FileReader(),
file = e.dataTransfer.files[0];
if (testFile(file.type)) {
utils.removeClass(dropzone, 'error');
reader.readAsDataURL(file);
reader.onload = function(e) {
sm_img.src = e.target.result;