websch/method-draw/extensions/ext-foreignobject.js

278 lines
8.1 KiB
JavaScript

/*
* ext-foreignobject.js
*
* Licensed under the Apache License, Version 2
*
* Copyright(c) 2010 Jacques Distler
* Copyright(c) 2010 Alexis Deveria
*
*/
methodDraw.addExtension("foreignObject", function(S) {
var svgcontent = S.svgcontent,
addElem = S.addSvgElementFromJson,
selElems,
svgns = "http://www.w3.org/2000/svg",
xlinkns = "http://www.w3.org/1999/xlink",
xmlns = "http://www.w3.org/XML/1998/namespace",
xmlnsns = "http://www.w3.org/2000/xmlns/",
se_ns = "http://svg-edit.googlecode.com",
htmlns = "http://www.w3.org/1999/xhtml",
mathns = "http://www.w3.org/1998/Math/MathML",
editingforeign = false,
svgdoc = S.svgroot.parentNode.ownerDocument,
started,
newFO;
var properlySourceSizeTextArea = function(){
// TODO: remove magic numbers here and get values from CSS
var height = $('#svg_source_container').height() - 80;
$('#svg_source_textarea').css('height', height);
};
function showPanel(on) {
var fc_rules = $('#fc_rules');
if(!fc_rules.length) {
fc_rules = $('<style id="fc_rules"><\/style>').appendTo('head');
}
fc_rules.text(!on?"":" #tool_topath { display: none !important; }");
$('#foreignObject_panel').toggle(on);
}
function toggleSourceButtons(on) {
$('#tool_source_save, #tool_source_cancel').toggle(!on);
$('#foreign_save, #foreign_cancel').toggle(on);
}
// Function: setForeignString(xmlString, elt)
// This function sets the content of element elt to the input XML.
//
// Parameters:
// xmlString - The XML text.
// elt - the parent element to append to
//
// Returns:
// This function returns false if the set was unsuccessful, true otherwise.
function setForeignString(xmlString) {
var elt = selElems[0];
try {
// convert string into XML document
var newDoc = Utils.text2xml('<svg xmlns="'+svgns+'" xmlns:xlink="'+xlinkns+'">'+xmlString+'</svg>');
// run it through our sanitizer to remove anything we do not support
S.sanitizeSvg(newDoc.documentElement);
elt.parentNode.replaceChild(svgdoc.importNode(newDoc.documentElement.firstChild, true), elt);
S.call("changed", [elt]);
svgCanvas.clearSelection();
} catch(e) {
console.log(e);
return false;
}
return true;
};
function showForeignEditor() {
var elt = selElems[0];
if (!elt || editingforeign) return;
editingforeign = true;
toggleSourceButtons(true);
elt.removeAttribute('fill');
var str = S.svgToString(elt, 0);
$('#svg_source_textarea').val(str);
$('#svg_source_editor').fadeIn();
properlySourceSizeTextArea();
$('#svg_source_textarea').focus();
}
function setAttr(attr, val) {
svgCanvas.changeSelectedAttribute(attr, val);
S.call("changed", selElems);
}
return {
name: "foreignObject",
svgicons: "extensions/foreignobject-icons.xml",
buttons: [{
id: "tool_foreign",
type: "mode",
title: "Foreign Object Tool",
events: {
'click': function() {
svgCanvas.setMode('foreign')
}
}
},{
id: "edit_foreign",
type: "context",
panel: "foreignObject_panel",
title: "Edit ForeignObject Content",
events: {
'click': function() {
showForeignEditor();
}
}
}],
context_tools: [{
type: "input",
panel: "foreignObject_panel",
title: "Change foreignObject's width",
id: "foreign_width",
label: "w",
size: 3,
events: {
change: function() {
setAttr('width', this.value);
}
}
},{
type: "input",
panel: "foreignObject_panel",
title: "Change foreignObject's height",
id: "foreign_height",
label: "h",
events: {
change: function() {
setAttr('height', this.value);
}
}
}, {
type: "input",
panel: "foreignObject_panel",
title: "Change foreignObject's font size",
id: "foreign_font_size",
label: "font-size",
size: 2,
defval: 16,
events: {
change: function() {
setAttr('font-size', this.value);
}
}
}
],
callback: function() {
$('#foreignObject_panel').hide();
var endChanges = function() {
$('#svg_source_editor').hide();
editingforeign = false;
$('#svg_source_textarea').blur();
toggleSourceButtons(false);
}
// TODO: Needs to be done after orig icon loads
setTimeout(function() {
// Create source save/cancel buttons
var save = $('#tool_source_save').clone()
.hide().attr('id', 'foreign_save').unbind()
.appendTo("#tool_source_back").click(function() {
if (!editingforeign) return;
if (!setForeignString($('#svg_source_textarea').val())) {
$.confirm("Errors found. Revert to original?", function(ok) {
if(!ok) return false;
endChanges();
});
} else {
endChanges();
}
// setSelectMode();
});
var cancel = $('#tool_source_cancel').clone()
.hide().attr('id', 'foreign_cancel').unbind()
.appendTo("#tool_source_back").click(function() {
endChanges();
});
}, 3000);
},
mouseDown: function(opts) {
var e = opts.event;
if(svgCanvas.getMode() == "foreign") {
started = true;
newFO = S.addSvgElementFromJson({
"element": "foreignObject",
"attr": {
"x": opts.start_x,
"y": opts.start_y,
"id": S.getNextId(),
"font-size": 16, //cur_text.font_size,
"width": "48",
"height": "20",
"style": "pointer-events:inherit"
}
});
var m = svgdoc.createElementNS(mathns, 'math');
m.setAttributeNS(xmlnsns, 'xmlns', mathns);
m.setAttribute('display', 'inline');
var mi = svgdoc.createElementNS(mathns, 'mi');
mi.setAttribute('mathvariant', 'normal');
mi.textContent = "\u03A6";
var mo = svgdoc.createElementNS(mathns, 'mo');
mo.textContent = "\u222A";
var mi2 = svgdoc.createElementNS(mathns, 'mi');
mi2.textContent = "\u2133";
m.appendChild(mi);
m.appendChild(mo);
m.appendChild(mi2);
newFO.appendChild(m);
return {
started: true
}
}
},
mouseUp: function(opts) {
var e = opts.event;
if(svgCanvas.getMode() == "foreign" && started) {
var attrs = $(newFO).attr(["width", "height"]);
keep = (attrs.width != 0 || attrs.height != 0);
svgCanvas.addToSelection([newFO], true);
return {
keep: keep,
element: newFO
}
}
},
selectedChanged: function(opts) {
// Use this to update the current selected elements
selElems = opts.elems;
var i = selElems.length;
while(i--) {
var elem = selElems[i];
if(elem && elem.tagName == "foreignObject") {
if(opts.selectedElement && !opts.multiselected) {
$('#foreign_font_size').val(elem.getAttribute("font-size"));
$('#foreign_width').val(elem.getAttribute("width"));
$('#foreign_height').val(elem.getAttribute("height"));
showPanel(true);
} else {
showPanel(false);
}
} else {
showPanel(false);
}
}
},
elementChanged: function(opts) {
var elem = opts.elems[0];
}
};
});