/*
|
* ext-markers.js
|
*
|
* Licensed under the Apache License, Version 2
|
*
|
* Copyright(c) 2010 Will Schleter
|
* based on ext-arrows.js by Copyright(c) 2010 Alexis Deveria
|
*
|
* This extension provides for the addition of markers to the either end
|
* or the middle of a line, polyline, path, polygon.
|
*
|
* Markers may be either a graphic or arbitary text
|
*
|
* to simplify the coding and make the implementation as robust as possible,
|
* markers are not shared - every object has its own set of markers.
|
* this relationship is maintained by a naming convention between the
|
* ids of the markers and the ids of the object
|
*
|
* The following restrictions exist for simplicty of use and programming
|
* objects and their markers to have the same color
|
* marker size is fixed
|
* text marker font, size, and attributes are fixed
|
* an application specific attribute - se_type - is added to each marker element
|
* to store the type of marker
|
*
|
* TODO:
|
* remove some of the restrictions above
|
* add option for keeping text aligned to horizontal
|
* add support for dimension extension lines
|
*
|
*/
|
|
methodDraw.addExtension("Markers", function(S) {
|
var svgcontent = S.svgcontent,
|
addElem = S.addSvgElementFromJson,
|
selElems;
|
|
var mtypes = ['start','mid','end'];
|
|
var marker_prefix = 'se_marker_';
|
var id_prefix = 'mkr_';
|
|
// note - to add additional marker types add them below with a unique id
|
// and add the associated icon(s) to marker-icons.svg
|
// the geometry is normallized to a 100x100 box with the origin at lower left
|
// Safari did not like negative values for low left of viewBox
|
// remember that the coordinate system has +y downward
|
var marker_types = {
|
nomarker: {},
|
leftarrow:
|
{element:'path', attr:{d:'M0,50 L100,90 L70,50 L100,10 Z'}},
|
rightarrow:
|
{element:'path', attr:{d:'M100,50 L0,90 L30,50 L0,10 Z'}},
|
textmarker:
|
{element:'text', attr: {x:0, y:0,'stroke-width':0,'stroke':'none','font-size':75,'font-family':'serif','text-anchor':'left',
|
'xml:space': 'preserve'}},
|
forwardslash:
|
{element:'path', attr:{d:'M30,100 L70,0'}},
|
reverseslash:
|
{element:'path', attr:{d:'M30,0 L70,100'}},
|
verticalslash:
|
{element:'path', attr:{d:'M50,0 L50,100'}},
|
box:
|
{element:'path', attr:{d:'M20,20 L20,80 L80,80 L80,20 Z'}},
|
star:
|
{element:'path', attr:{d:'M10,30 L90,30 L20,90 L50,10 L80,90 Z'}},
|
xmark:
|
{element:'path', attr:{d:'M20,80 L80,20 M80,80 L20,20'}},
|
triangle:
|
{element:'path', attr:{d:'M10,80 L50,20 L80,80 Z'}},
|
mcircle:
|
{element:'circle', attr:{r:30, cx:50, cy:50}}
|
}
|
|
|
var lang_list = {
|
"en":[
|
{id: "start_marker_list", title: "Select start marker type" },
|
{id: "mid_marker_list", title: "Select mid marker type" },
|
{id: "end_marker_list", title: "Select end marker type" },
|
{id: "nomarker", title: "No Marker" },
|
{id: "leftarrow", title: "Left Arrow" },
|
{id: "rightarrow", title: "Right Arrow" },
|
{id: "textmarker", title: "Text Marker" },
|
{id: "forwardslash", title: "Forward Slash" },
|
{id: "reverseslash", title: "Reverse Slash" },
|
{id: "verticalslash", title: "Vertical Slash" },
|
{id: "box", title: "Box" },
|
{id: "star", title: "Star" },
|
{id: "xmark", title: "X" },
|
{id: "triangle", title: "Triangle" },
|
{id: "mcircle", title: "Circle" },
|
{id: "leftarrow_o", title: "Open Left Arrow" },
|
{id: "rightarrow_o", title: "Open Right Arrow" },
|
{id: "box_o", title: "Open Box" },
|
{id: "star_o", title: "Open Star" },
|
{id: "triangle_o", title: "Open Triangle" },
|
{id: "mcircle_o", title: "Open Circle" }
|
]
|
};
|
|
|
// duplicate shapes to support unfilled (open) marker types with an _o suffix
|
$.each(['leftarrow','rightarrow','box','star','mcircle','triangle'],function(i,v) {
|
marker_types[v+'_o'] = marker_types[v];
|
});
|
|
// elem = a graphic element will have an attribute like marker-start
|
// attr - marker-start, marker-mid, or marker-end
|
// returns the marker element that is linked to the graphic element
|
function getLinked(elem, attr) {
|
var str = elem.getAttribute(attr);
|
if(!str) return null;
|
var m = str.match(/\(\#(.*)\)/);
|
if(!m || m.length !== 2) {
|
return null;
|
}
|
return S.getElem(m[1]);
|
}
|
|
//toggles context tool panel off/on
|
//sets the controls with the selected element's settings
|
function showPanel(on) {
|
$('#marker_panel').toggle(on);
|
if ($('#marker_panel_title').length < 1) {
|
$('#marker_panel').prepend("<h4 id='marker_panel_title'>Arrows</h4>")
|
}
|
|
if(on) {
|
var el = selElems[0];
|
var val;
|
var ci;
|
|
$.each(mtypes, function(i, pos) {
|
var m=getLinked(el,"marker-"+pos);
|
var txtbox = $('#'+pos+'_marker');
|
if (!m) {
|
val='\\nomarker';
|
ci=val;
|
txtbox.hide() // hide text box
|
} else {
|
if (!m.attributes.se_type) return; // not created by this extension
|
val='\\'+m.attributes.se_type.textContent;
|
ci=val;
|
if (val=='\\textmarker') {
|
val=m.lastChild.textContent;
|
//txtbox.show(); // show text box
|
} else {
|
txtbox.hide() // hide text box
|
}
|
}
|
txtbox.val(val);
|
setIcon(pos,ci);
|
})
|
}
|
}
|
|
function addMarker(id, val) {
|
var txt_box_bg = '#ffffff';
|
var txt_box_border = 'none';
|
var txt_box_stroke_width = 0;
|
|
var marker = S.getElem(id);
|
|
if (marker) return;
|
|
if (val=='' || val=='\\nomarker') return;
|
|
var el = selElems[0];
|
var color = el.getAttribute('stroke');
|
//NOTE: Safari didn't like a negative value in viewBox
|
//so we use a standardized 0 0 100 100
|
//with 50 50 being mapped to the marker position
|
var refX = 50;
|
var refY = 50;
|
var viewBox = "0 0 100 100";
|
var markerWidth = 5;
|
var markerHeight = 5;
|
var strokeWidth = 10;
|
if (val.substr(0,1)=='\\') se_type=val.substr(1);
|
else se_type='textmarker';
|
|
if (!marker_types[se_type]) return; // an unknown type!
|
|
// create a generic marker
|
marker = addElem({
|
"element": "marker",
|
"attr": {
|
"id": id,
|
"markerUnits": "strokeWidth",
|
"orient": "auto",
|
"style": "pointer-events:none",
|
"se_type": se_type
|
}
|
});
|
|
if (se_type!='textmarker') {
|
var mel = addElem(marker_types[se_type]);
|
var fillcolor = color;
|
if (se_type.substr(-2)=='_o') fillcolor='none';
|
mel.setAttribute('fill',fillcolor);
|
mel.setAttribute('stroke',color);
|
mel.setAttribute('stroke-width',strokeWidth);
|
marker.appendChild(mel);
|
} else {
|
var text = addElem(marker_types[se_type]);
|
// have to add text to get bounding box
|
text.textContent = val;
|
var tb=text.getBBox();
|
//alert( tb.x + " " + tb.y + " " + tb.width + " " + tb.height);
|
var pad=1;
|
var bb = tb;
|
bb.x = 0;
|
bb.y = 0;
|
bb.width += pad*2;
|
bb.height += pad*2;
|
// shift text according to its size
|
text.setAttribute('x', pad);
|
text.setAttribute('y', bb.height - pad - tb.height/4); // kludge?
|
text.setAttribute('fill',color);
|
refX = bb.width/2+pad;
|
refY = bb.height/2+pad;
|
viewBox = bb.x + " " + bb.y + " " + bb.width + " " + bb.height;
|
markerWidth =bb.width/10;
|
markerHeight = bb.height/10;
|
|
var box = addElem({
|
"element": "rect",
|
"attr": {
|
"x": bb.x,
|
"y": bb.y,
|
"width": bb.width,
|
"height": bb.height,
|
"fill": txt_box_bg,
|
"stroke": txt_box_border,
|
"stroke-width": txt_box_stroke_width
|
}
|
});
|
marker.setAttribute("orient",0);
|
marker.appendChild(box);
|
marker.appendChild(text);
|
}
|
|
marker.setAttribute("viewBox",viewBox);
|
marker.setAttribute("markerWidth", markerWidth);
|
marker.setAttribute("markerHeight", markerHeight);
|
marker.setAttribute("refX", refX);
|
marker.setAttribute("refY", refY);
|
S.findDefs().appendChild(marker);
|
|
return marker;
|
}
|
|
|
function setMarker() {
|
var poslist={'start_marker':'start','mid_marker':'mid','end_marker':'end'};
|
var pos = poslist[this.id];
|
var marker_name = 'marker-'+pos;
|
var val = this.value;
|
var el = selElems[0];
|
var marker = getLinked(el, marker_name);
|
if (marker) $(marker).remove();
|
el.removeAttribute(marker_name);
|
if (val=='') val='\\nomarker';
|
if (val=='\\nomarker') {
|
setIcon(pos,val);
|
S.call("changed", selElems);
|
return;
|
}
|
// Set marker on element
|
var id = marker_prefix + pos + '_' + el.id;
|
addMarker(id, val);
|
svgCanvas.changeSelectedAttribute(marker_name, "url(#" + id + ")");
|
if (el.tagName == "line" && pos=='mid') el=convertline(el);
|
S.call("changed", selElems);
|
setIcon(pos,val);
|
}
|
|
function convertline(elem) {
|
// this routine came from the connectors extension
|
// it is needed because midpoint markers don't work with line elements
|
if (!(elem.tagName == "line")) return elem;
|
|
// Convert to polyline to accept mid-arrow
|
|
var x1 = elem.getAttribute('x1')-0;
|
var x2 = elem.getAttribute('x2')-0;
|
var y1 = elem.getAttribute('y1')-0;
|
var y2 = elem.getAttribute('y2')-0;
|
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'),
|
"fill": "none",
|
"opacity": elem.getAttribute('opacity') || 1
|
}
|
});
|
$.each(mtypes, function(i, pos) { // get any existing marker definitions
|
var nam = 'marker-'+pos;
|
var m = elem.getAttribute(nam);
|
if (m) pline.setAttribute(nam,elem.getAttribute(nam));
|
});
|
|
var batchCmd = new S.BatchCommand();
|
batchCmd.addSubCommand(new S.RemoveElementCommand(elem, elem.parentNode));
|
batchCmd.addSubCommand(new S.InsertElementCommand(pline));
|
|
$(elem).after(pline).remove();
|
svgCanvas.clearSelection();
|
pline.id = id;
|
svgCanvas.addToSelection([pline]);
|
S.addCommandToHistory(batchCmd);
|
return pline;
|
}
|
|
// called when the main system modifies an object
|
// this routine changes the associated markers to be the same color
|
function colorChanged(elem) {
|
var color = elem.getAttribute('stroke');
|
|
$.each(mtypes, function(i, pos) {
|
var marker = getLinked(elem, 'marker-'+pos);
|
if (!marker) return;
|
if (!marker.attributes.se_type) return; //not created by this extension
|
var ch = marker.lastElementChild;
|
if (!ch) return;
|
var curfill = ch.getAttribute("fill");
|
var curstroke = ch.getAttribute("stroke")
|
if (curfill && curfill!='none') ch.setAttribute("fill",color);
|
if (curstroke && curstroke!='none') ch.setAttribute("stroke",color);
|
});
|
}
|
|
// called when the main system creates or modifies an object
|
// primary purpose is create new markers for cloned objects
|
function updateReferences(el) {
|
$.each(mtypes, function (i,pos) {
|
var id = marker_prefix + pos + '_' + el.id;
|
var marker_name = 'marker-'+pos;
|
var marker = getLinked(el, marker_name);
|
if (!marker || !marker.attributes.se_type) return; //not created by this extension
|
var url = el.getAttribute(marker_name);
|
if (url) {
|
var len = el.id.length;
|
var linkid = url.substr(-len-1,len);
|
if (el.id != linkid) {
|
var val = $('#'+pos+'_marker').attr('value');
|
addMarker(id, val);
|
svgCanvas.changeSelectedAttribute(marker_name, "url(#" + id + ")");
|
if (el.tagName == "line" && pos=='mid') el=convertline(el);
|
S.call("changed", selElems);
|
}
|
}
|
});
|
}
|
|
// simulate a change event a text box that stores the current element's marker type
|
function triggerTextEntry(pos,val) {
|
$('#'+pos+'_marker').val(val);
|
$('#'+pos+'_marker').change();
|
var txtbox = $('#'+pos+'_marker');
|
//if (val.substr(0,1)=='\\') txtbox.hide();
|
//else txtbox.show();
|
}
|
|
function setIcon(pos,id) {
|
if (id.substr(0,1)!='\\') id='\\textmarker'
|
var ci = '#'+id_prefix+pos+'_'+id.substr(1);
|
methodDraw.setIcon('#cur_' + pos +'_marker_list', $(ci).children());
|
$(ci).addClass('current').siblings().removeClass('current');
|
}
|
|
function setMarkerSet(obj) {
|
var parts = this.id.split('_');
|
var set = parts[2];
|
switch (set) {
|
case 'off':
|
triggerTextEntry('start','\\nomarker');
|
triggerTextEntry('mid','\\nomarker');
|
triggerTextEntry('end','\\nomarker');
|
break;
|
case 'dimension':
|
triggerTextEntry('start','\\leftarrow');
|
triggerTextEntry('end','\\rightarrow');
|
showTextPrompt('mid');
|
break;
|
case 'label':
|
triggerTextEntry('mid','\\nomarker');
|
triggerTextEntry('end','\\rightarrow');
|
showTextPrompt('start');
|
break;
|
}
|
}
|
|
function showTextPrompt(pos) {
|
var def = $('#'+pos+'_marker').val();
|
if (def.substr(0,1)=='\\') def='';
|
$.prompt('Enter text for ' + pos + ' marker', def , function(txt) { if (txt) triggerTextEntry(pos,txt); });
|
}
|
|
// callback function for a toolbar button click
|
function setArrowFromButton(obj) {
|
|
var parts = this.id.split('_');
|
var pos = parts[1];
|
var val = parts[2];
|
if (parts[3]) val+='_'+parts[3];
|
|
if (val!='textmarker') {
|
triggerTextEntry(pos,'\\'+val);
|
} else {
|
showTextPrompt(pos);
|
}
|
}
|
|
function getTitle(lang,id) {
|
var list = lang_list[lang];
|
for (var i in list) {
|
if (list[i].id==id) return list[i].title;
|
}
|
return id;
|
}
|
|
|
// build the toolbar button array from the marker definitions
|
// TODO: need to incorporate language specific titles
|
function buildButtonList() {
|
var buttons=[];
|
var i=0;
|
/*
|
buttons.push({
|
id:id_prefix + 'markers_off',
|
title:'Turn off all markers',
|
type:'context',
|
events: { 'click': setMarkerSet },
|
panel: 'marker_panel'
|
});
|
buttons.push({
|
id:id_prefix + 'markers_dimension',
|
title:'Dimension',
|
type:'context',
|
events: { 'click': setMarkerSet },
|
panel: 'marker_panel'
|
});
|
buttons.push({
|
id:id_prefix + 'markers_label',
|
title:'Label',
|
type:'context',
|
events: { 'click': setMarkerSet },
|
panel: 'marker_panel'
|
});
|
*/
|
$.each(mtypes,function(k,pos) {
|
var listname = pos + "_marker_list";
|
var def = true;
|
$.each(marker_types,function(id,v) {
|
var title = getTitle('en',id);
|
buttons.push({
|
id:id_prefix + pos + "_" + id,
|
svgicon:id,
|
title:title,
|
type:'context',
|
events: { 'click': setArrowFromButton },
|
panel:'marker_panel',
|
list: listname,
|
isDefault: def
|
});
|
def = false;
|
});
|
});
|
return buttons;
|
}
|
|
return {
|
name: "Markers",
|
svgicons: "extensions/markers-icons.xml",
|
buttons: buildButtonList(),
|
context_tools: [
|
{
|
type: "input",
|
panel: "marker_panel",
|
title: "Start marker",
|
id: "start_marker",
|
label: "Start",
|
size: 3,
|
events: { change: setMarker }
|
},{
|
type: "button-select",
|
panel: "marker_panel",
|
title: getTitle('en','start_marker_list'),
|
id: "start_marker_list",
|
colnum: 3,
|
events: { change: setArrowFromButton }
|
},{
|
type: "input",
|
panel: "marker_panel",
|
title: "Middle marker",
|
id: "mid_marker",
|
label: "Middle",
|
defval: "",
|
size: 3,
|
events: { change: setMarker }
|
},{
|
type: "button-select",
|
panel: "marker_panel",
|
title: getTitle('en','mid_marker_list'),
|
id: "mid_marker_list",
|
colnum: 3,
|
events: { change: setArrowFromButton }
|
},{
|
type: "input",
|
panel: "marker_panel",
|
title: "End marker",
|
id: "end_marker",
|
label: "End",
|
size: 3,
|
events: { change: setMarker }
|
},{
|
type: "button-select",
|
panel: "marker_panel",
|
title: getTitle('en','end_marker_list'),
|
id: "end_marker_list",
|
colnum: 3,
|
events: { change: setArrowFromButton }
|
} ],
|
callback: function() {
|
$('#marker_panel').addClass('toolset').hide();
|
|
},
|
addLangData: function(lang) {
|
return { data: lang_list[lang] };
|
},
|
|
selectedChanged: function(opts) {
|
// Use this to update the current selected elements
|
//console.log('selectChanged',opts);
|
selElems = opts.elems;
|
|
var i = selElems.length;
|
var marker_elems = ['line','path','polyline','polygon'];
|
|
while(i--) {
|
var elem = selElems[i];
|
if(elem && $.inArray(elem.tagName, marker_elems) != -1) {
|
if(opts.selectedElement && !opts.multiselected) {
|
showPanel(true);
|
} else {
|
showPanel(false);
|
}
|
} else {
|
showPanel(false);
|
}
|
}
|
},
|
|
elementChanged: function(opts) {
|
//console.log('elementChanged',opts);
|
var elem = opts.elems[0];
|
if(elem && (
|
elem.getAttribute("marker-start") ||
|
elem.getAttribute("marker-mid") ||
|
elem.getAttribute("marker-end")
|
)) {
|
colorChanged(elem);
|
updateReferences(elem);
|
}
|
changing_flag = false;
|
}
|
};
|
});
|
