svgUtil.js
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/*
* Copyright 2015 Open Networking Laboratory
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
ONOS GUI -- SVG -- Util Service
*/
/*
The SVG Util Service provides a miscellany of utility functions.
*/
(function () {
'use strict';
// injected references
var $log, fs;
angular.module('onosSvg')
.factory('SvgUtilService', ['$log', 'FnService',
function (_$log_, _fs_) {
$log = _$log_;
fs = _fs_;
function createDragBehavior(force, selectCb, atDragEnd,
dragEnabled, clickEnabled) {
var draggedThreshold = d3.scale.linear()
.domain([0, 0.1])
.range([5, 20])
.clamp(true),
drag,
fSel = fs.isF(selectCb),
fEnd = fs.isF(atDragEnd),
fDEn = fs.isF(dragEnabled),
fCEn = fs.isF(clickEnabled),
bad = [];
function naf(what) {
return 'SvgUtilService: createDragBehavior(): ' + what +
' is not a function';
}
if (!fSel) {
bad.push(naf('selectCb'));
}
if (!fEnd) {
bad.push(naf('atDragEnd'));
}
if (!fDEn) {
bad.push(naf('dragEnabled'));
}
if (!fCEn) {
bad.push(naf('clickEnabled'));
}
if (bad.length) {
$log.error(bad.join('\n'));
return null;
}
function dragged(d) {
var threshold = draggedThreshold(force.alpha()),
dx = d.oldX - d.px,
dy = d.oldY - d.py;
if (Math.abs(dx) >= threshold || Math.abs(dy) >= threshold) {
d.dragged = true;
}
return d.dragged;
}
drag = d3.behavior.drag()
.origin(function(d) { return d; })
.on('dragstart', function(d) {
if (clickEnabled() || dragEnabled()) {
d3.event.sourceEvent.stopPropagation();
d.oldX = d.x;
d.oldY = d.y;
d.dragged = false;
d.fixed |= 2;
d.dragStarted = true;
}
})
.on('drag', function(d) {
if (dragEnabled()) {
d.px = d3.event.x;
d.py = d3.event.y;
if (dragged(d)) {
if (!force.alpha()) {
force.alpha(.025);
}
}
}
})
.on('dragend', function(d) {
if (d.dragStarted) {
d.dragStarted = false;
if (!dragged(d)) {
// consider this the same as a 'click'
// (selection of a node)
if (clickEnabled()) {
selectCb(d, this);
// TODO: set 'this' context instead of param
}
}
d.fixed &= ~6;
// hook at the end of a drag gesture
if (dragEnabled()) {
atDragEnd(d, this);
// TODO: set 'this' context instead of param
}
}
});
return drag; }
function loadGlow() {
$log.warn('SvgUtilService: loadGlow -- To Be Implemented');
}
function cat7() {
$log.warn('SvgUtilService: cat7 -- To Be Implemented');
}
function translate(x, y) {
if (fs.isA(x) && x.length === 2 && !y) {
return 'translate(' + x[0] + ',' + x[1] + ')';
}
return 'translate(' + x + ',' + y + ')';
}
return {
createDragBehavior: createDragBehavior,
loadGlow: loadGlow,
cat7: cat7,
translate: translate
};
}]);
}());