%PDF-
%PDF-
Mini Shell
Mini Shell
/*globals svgEditor, svgCanvas, $*/
/*jslint vars: true, continue: true, eqeq: true, todo: true*/
/*
* ext-connector.js
*
* Licensed under the MIT License
*
* Copyright(c) 2010 Alexis Deveria
*
*/
svgEditor.addExtension("Connector", function(S) {
var svgcontent = S.svgcontent,
svgroot = S.svgroot,
getNextId = S.getNextId,
getElem = S.getElem,
addElem = S.addSvgElementFromJson,
selManager = S.selectorManager,
curConfig = svgEditor.curConfig,
started = false,
start_x,
start_y,
cur_line,
start_elem,
end_elem,
connections = [],
conn_sel = ".se_connector",
se_ns,
// connect_str = "-SE_CONNECT-",
selElems = [],
elData = $.data;
var lang_list = {
"en":[
{"id": "mode_connect", "title": "Connect two objects" }
],
"fr":[
{"id": "mode_connect", "title": "Connecter deux objets"}
]
};
function getBBintersect(x, y, bb, offset) {
if(offset) {
offset -= 0;
bb = $.extend({}, bb);
bb.width += offset;
bb.height += offset;
bb.x -= offset/2;
bb.y -= offset/2;
}
var mid_x = bb.x + bb.width/2;
var mid_y = bb.y + bb.height/2;
var len_x = x - mid_x;
var len_y = y - mid_y;
var slope = Math.abs(len_y/len_x);
var ratio;
if(slope < bb.height/bb.width) {
ratio = (bb.width/2) / Math.abs(len_x);
} else {
ratio = (bb.height/2) / Math.abs(len_y);
}
return {
x: mid_x + len_x * ratio,
y: mid_y + len_y * ratio
};
}
function getOffset(side, line) {
var give_offset = !!line.getAttribute('marker-' + side);
// var give_offset = $(line).data(side+'_off');
// TODO: Make this number (5) be based on marker width/height
var size = line.getAttribute('stroke-width') * 5;
return give_offset ? size : 0;
}
function showPanel(on) {
var conn_rules = $('#connector_rules');
if(!conn_rules.length) {
conn_rules = $('<style id="connector_rules"></style>').appendTo('head');
}
conn_rules.text(!on?"":"#tool_clone, #tool_topath, #tool_angle, #xy_panel { display: none !important; }");
$('#connector_panel').toggle(on);
}
function setPoint(elem, pos, x, y, setMid) {
var i, pts = elem.points;
var pt = svgroot.createSVGPoint();
pt.x = x;
pt.y = y;
if (pos === 'end') {pos = pts.numberOfItems - 1;}
// TODO: Test for this on init, then use alt only if needed
try {
pts.replaceItem(pt, pos);
} catch(err) {
// Should only occur in FF which formats points attr as "n,n n,n", so just split
var pt_arr = elem.getAttribute("points").split(" ");
for (i = 0; i < pt_arr.length; i++) {
if (i === pos) {
pt_arr[i] = x + ',' + y;
}
}
elem.setAttribute("points",pt_arr.join(" "));
}
if(setMid) {
// Add center point
var pt_start = pts.getItem(0);
var pt_end = pts.getItem(pts.numberOfItems-1);
setPoint(elem, 1, (pt_end.x + pt_start.x)/2, (pt_end.y + pt_start.y)/2);
}
}
function updateLine(diff_x, diff_y) {
// Update line with element
var i = connections.length;
while(i--) {
var conn = connections[i];
var line = conn.connector;
var elem = conn.elem;
var pre = conn.is_start?'start':'end';
// var sw = line.getAttribute('stroke-width') * 5;
// Update bbox for this element
var bb = elData(line, pre+'_bb');
bb.x = conn.start_x + diff_x;
bb.y = conn.start_y + diff_y;
elData(line, pre+'_bb', bb);
var alt_pre = conn.is_start?'end':'start';
// Get center pt of connected element
var bb2 = elData(line, alt_pre+'_bb');
var src_x = bb2.x + bb2.width/2;
var src_y = bb2.y + bb2.height/2;
// Set point of element being moved
var pt = getBBintersect(src_x, src_y, bb, getOffset(pre, line)); // $(line).data(pre+'_off')?sw:0
setPoint(line, conn.is_start ? 0 : 'end', pt.x, pt.y, true);
// Set point of connected element
var pt2 = getBBintersect(pt.x, pt.y, elData(line, alt_pre + '_bb'), getOffset(alt_pre, line));
setPoint(line, conn.is_start ? 'end' : 0, pt2.x, pt2.y, true);
}
}
function findConnectors(elems) {
var i;
if (!elems) {elems = selElems;}
var connectors = $(svgcontent).find(conn_sel);
connections = [];
// Loop through connectors to see if one is connected to the element
connectors.each(function() {
var add_this;
function add () {
if ($.inArray(this, elems) !== -1) {
// Pretend this element is selected
add_this = true;
}
}
var start = elData(this, "c_start");
var end = elData(this, "c_end");
var parts = [getElem(start), getElem(end)];
for (i = 0; i < 2; i++) {
var c_elem = parts[i];
add_this = false;
// The connected element might be part of a selected group
$(c_elem).parents().each(add);
if(!c_elem || !c_elem.parentNode) {
$(this).remove();
continue;
}
if($.inArray(c_elem, elems) !== -1 || add_this) {
var bb = svgCanvas.getStrokedBBox([c_elem]);
connections.push({
elem: c_elem,
connector: this,
is_start: (i === 0),
start_x: bb.x,
start_y: bb.y
});
}
}
});
}
function updateConnectors(elems) {
// Updates connector lines based on selected elements
// Is not used on mousemove, as it runs getStrokedBBox every time,
// which isn't necessary there.
var i, j;
findConnectors(elems);
if (connections.length) {
// Update line with element
i = connections.length;
while (i--) {
var conn = connections[i];
var line = conn.connector;
var elem = conn.elem;
var sw = line.getAttribute('stroke-width') * 5;
var pre = conn.is_start?'start':'end';
// Update bbox for this element
var bb = svgCanvas.getStrokedBBox([elem]);
bb.x = conn.start_x;
bb.y = conn.start_y;
elData(line, pre+'_bb', bb);
var add_offset = elData(line, pre+'_off');
var alt_pre = conn.is_start?'end':'start';
// Get center pt of connected element
var bb2 = elData(line, alt_pre+'_bb');
var src_x = bb2.x + bb2.width/2;
var src_y = bb2.y + bb2.height/2;
// Set point of element being moved
var pt = getBBintersect(src_x, src_y, bb, getOffset(pre, line));
setPoint(line, conn.is_start ? 0 : 'end', pt.x, pt.y, true);
// Set point of connected element
var pt2 = getBBintersect(pt.x, pt.y, elData(line, alt_pre + '_bb'), getOffset(alt_pre, line));
setPoint(line, conn.is_start ? 'end' : 0, pt2.x, pt2.y, true);
// Update points attribute manually for webkit
if (navigator.userAgent.indexOf('AppleWebKit') !== -1) {
var pts = line.points;
var len = pts.numberOfItems;
var pt_arr = [];
for (j = 0; j < len; j++) {
pt = pts.getItem(j);
pt_arr[j] = pt.x + ',' + pt.y;
}
line.setAttribute('points', pt_arr.join(' '));
}
}
}
}
// Do once
(function() {
var gse = svgCanvas.groupSelectedElements;
svgCanvas.groupSelectedElements = function() {
svgCanvas.removeFromSelection($(conn_sel).toArray());
return gse.apply(this, arguments);
};
var mse = svgCanvas.moveSelectedElements;
svgCanvas.moveSelectedElements = function() {
svgCanvas.removeFromSelection($(conn_sel).toArray());
var cmd = mse.apply(this, arguments);
updateConnectors();
return cmd;
};
se_ns = svgCanvas.getEditorNS();
}());
// Do on reset
function init() {
// Make sure all connectors have data set
$(svgcontent).find('*').each(function() {
var conn = this.getAttributeNS(se_ns, "connector");
if(conn) {
this.setAttribute('class', conn_sel.substr(1));
var conn_data = conn.split(' ');
var sbb = svgCanvas.getStrokedBBox([getElem(conn_data[0])]);
var ebb = svgCanvas.getStrokedBBox([getElem(conn_data[1])]);
$(this).data('c_start',conn_data[0])
.data('c_end',conn_data[1])
.data('start_bb', sbb)
.data('end_bb', ebb);
svgCanvas.getEditorNS(true);
}
});
// updateConnectors();
}
// $(svgroot).parent().mousemove(function(e) {
// // if(started
// // || svgCanvas.getMode() != "connector"
// // || e.target.parentNode.parentNode != svgcontent) return;
//
// console.log('y')
// // if(e.target.parentNode.parentNode === svgcontent) {
// //
// // }
// });
return {
name: "Connector",
svgicons: svgEditor.curConfig.imgPath + "conn.svg",
buttons: [{
id: "mode_connect",
type: "mode",
icon: svgEditor.curConfig.imgPath + "cut.png",
title: "Connect two objects",
includeWith: {
button: '#tool_line',
isDefault: false,
position: 1
},
events: {
'click': function() {
svgCanvas.setMode("connector");
}
}
}],
addLangData: function(lang) {
return {
data: lang_list[lang]
};
},
mouseDown: function(opts) {
var e = opts.event;
start_x = opts.start_x;
start_y = opts.start_y;
var mode = svgCanvas.getMode();
if (mode == "connector") {
if (started) {return;}
var mouse_target = e.target;
var parents = $(mouse_target).parents();
if($.inArray(svgcontent, parents) !== -1) {
// Connectable element
// If child of foreignObject, use parent
var fo = $(mouse_target).closest("foreignObject");
start_elem = fo.length ? fo[0] : mouse_target;
// Get center of source element
var bb = svgCanvas.getStrokedBBox([start_elem]);
var x = bb.x + bb.width/2;
var y = bb.y + bb.height/2;
started = true;
cur_line = addElem({
"element": "polyline",
"attr": {
"id": getNextId(),
"points": (x+','+y+' '+x+','+y+' '+start_x+','+start_y),
"stroke": '#' + curConfig.initStroke.color,
"stroke-width": (!start_elem.stroke_width || start_elem.stroke_width == 0) ? curConfig.initStroke.width : start_elem.stroke_width,
"fill": "none",
"opacity": curConfig.initStroke.opacity,
"style": "pointer-events:none"
}
});
elData(cur_line, 'start_bb', bb);
}
return {
started: true
};
}
if (mode == "select") {
findConnectors();
}
},
mouseMove: function(opts) {
var zoom = svgCanvas.getZoom();
var e = opts.event;
var x = opts.mouse_x/zoom;
var y = opts.mouse_y/zoom;
var diff_x = x - start_x,
diff_y = y - start_y;
var mode = svgCanvas.getMode();
if (mode == "connector" && started) {
var sw = cur_line.getAttribute('stroke-width') * 3;
// Set start point (adjusts based on bb)
var pt = getBBintersect(x, y, elData(cur_line, 'start_bb'), getOffset('start', cur_line));
start_x = pt.x;
start_y = pt.y;
setPoint(cur_line, 0, pt.x, pt.y, true);
// Set end point
setPoint(cur_line, 'end', x, y, true);
} else if (mode == "select") {
var slen = selElems.length;
while(slen--) {
var elem = selElems[slen];
// Look for selected connector elements
if(elem && elData(elem, 'c_start')) {
// Remove the "translate" transform given to move
svgCanvas.removeFromSelection([elem]);
svgCanvas.getTransformList(elem).clear();
}
}
if(connections.length) {
updateLine(diff_x, diff_y);
}
}
},
mouseUp: function(opts) {
var zoom = svgCanvas.getZoom();
var e = opts.event,
x = opts.mouse_x/zoom,
y = opts.mouse_y/zoom,
mouse_target = e.target;
if(svgCanvas.getMode() == "connector") {
var fo = $(mouse_target).closest("foreignObject");
if (fo.length) {mouse_target = fo[0];}
var parents = $(mouse_target).parents();
if (mouse_target == start_elem) {
// Start line through click
started = true;
return {
keep: true,
element: null,
started: started
};
}
if ($.inArray(svgcontent, parents) === -1) {
// Not a valid target element, so remove line
$(cur_line).remove();
started = false;
return {
keep: false,
element: null,
started: started
};
}
// Valid end element
end_elem = mouse_target;
var start_id = start_elem.id, end_id = end_elem.id;
var conn_str = start_id + " " + end_id;
var alt_str = end_id + " " + start_id;
// Don't create connector if one already exists
var dupe = $(svgcontent).find(conn_sel).filter(function() {
var conn = this.getAttributeNS(se_ns, "connector");
if (conn == conn_str || conn == alt_str) {return true;}
});
if(dupe.length) {
$(cur_line).remove();
return {
keep: false,
element: null,
started: false
};
}
var bb = svgCanvas.getStrokedBBox([end_elem]);
var pt = getBBintersect(start_x, start_y, bb, getOffset('start', cur_line));
setPoint(cur_line, 'end', pt.x, pt.y, true);
$(cur_line)
.data("c_start", start_id)
.data("c_end", end_id)
.data("end_bb", bb);
se_ns = svgCanvas.getEditorNS(true);
cur_line.setAttributeNS(se_ns, "se:connector", conn_str);
cur_line.setAttribute('class', conn_sel.substr(1));
cur_line.setAttribute('opacity', 1);
svgCanvas.addToSelection([cur_line]);
svgCanvas.moveToBottomSelectedElement();
selManager.requestSelector(cur_line).showGrips(false);
started = false;
return {
keep: true,
element: cur_line,
started: started
};
}
},
selectedChanged: function(opts) {
// TODO: Find better way to skip operations if no connectors are in use
if(!$(svgcontent).find(conn_sel).length) {return;}
if(svgCanvas.getMode() == 'connector') {
svgCanvas.setMode('select');
}
// Use this to update the current selected elements
selElems = opts.elems;
var i = selElems.length;
while(i--) {
var elem = selElems[i];
if(elem && elData(elem, 'c_start')) {
selManager.requestSelector(elem).showGrips(false);
if(opts.selectedElement && !opts.multiselected) {
// TODO: Set up context tools and hide most regular line tools
showPanel(true);
} else {
showPanel(false);
}
} else {
showPanel(false);
}
}
updateConnectors();
},
elementChanged: function(opts) {
var elem = opts.elems[0];
if (elem && elem.tagName === 'svg' && elem.id === 'svgcontent') {
// Update svgcontent (can change on import)
svgcontent = elem;
init();
}
// Has marker, so change offset
var start;
if (elem && (
elem.getAttribute("marker-start") ||
elem.getAttribute("marker-mid") ||
elem.getAttribute("marker-end")
)) {
start = elem.getAttribute("marker-start");
var mid = elem.getAttribute("marker-mid");
var end = elem.getAttribute("marker-end");
cur_line = elem;
$(elem)
.data("start_off", !!start)
.data("end_off", !!end);
if (elem.tagName === 'line' && mid) {
// Convert to polyline to accept mid-arrow
var x1 = Number(elem.getAttribute('x1'));
var x2 = Number(elem.getAttribute('x2'));
var y1 = Number(elem.getAttribute('y1'));
var y2 = Number(elem.getAttribute('y2'));
var id = elem.id;
var mid_pt = (' '+((x1+x2)/2)+','+((y1+y2)/2) + ' ');
var pline = addElem({
"element": "polyline",
"attr": {
"points": (x1+','+y1+ mid_pt +x2+','+y2),
"stroke": elem.getAttribute('stroke'),
"stroke-width": elem.getAttribute('stroke-width'),
"marker-mid": mid,
"fill": "none",
"opacity": elem.getAttribute('opacity') || 1
}
});
$(elem).after(pline).remove();
svgCanvas.clearSelection();
pline.id = id;
svgCanvas.addToSelection([pline]);
elem = pline;
}
}
// Update line if it's a connector
if (elem.getAttribute('class') == conn_sel.substr(1)) {
start = getElem(elData(elem, 'c_start'));
updateConnectors([start]);
} else {
updateConnectors();
}
},
toolButtonStateUpdate: function(opts) {
if (opts.nostroke) {
if ($('#mode_connect').hasClass('tool_button_current')) {
svgEditor.clickSelect();
}
}
$('#mode_connect')
.toggleClass('disabled',opts.nostroke);
}
};
});
Zerion Mini Shell 1.0