rpd
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RPD is a minimal framework for building Node-Based User Interfaces, powered by Reactive Programming
153 lines (125 loc) • 6.23 kB
JavaScript
;(function(global) {
"use strict";
var Rpd = global.Rpd;
if (typeof Rpd === "undefined" && typeof require !== "undefined") {
Rpd = require('rpd');
}
Rpd.style('plain', 'html', function(config) {
var lastCanvas;
var inletToConnector = {},
outletToConnector = {};
function getPos(elm) { var bounds = elm.getBoundingClientRect();
return { x: bounds.left, y: bounds.top } };
return {
edgePadding: { horizontal: 20, vertical: 40 },
boxPadding: { horizontal: 20, vertical: 80 },
createCanvas: function(patch, parent) {
return { element: d3.select(document.createElement('div'))
.classed('rpd-patch', true).node() };
},
createNode: function(node, render, description, icon) {
var nodeElm = d3.select(document.createElement('table'))
.attr('class', 'rpd-node');
if (node.def.title || node.type) {
nodeElm.append('tr').attr('class', 'rpd-title')
.attr('colspan', 0)
.classed('rpd-header', true)
.append('th')
.call(function(td) {
td.append('span').attr('class', 'rpd-name').text(node.def.title || node.type);
if (config.showTypes) td.append('span').attr('class', 'rpd-type').text(node.type);
// add description to be shown on hover
td.attr('title', description ? (description + ' (' + node.type + ')') : node.type);
})
}
// inlets placehoder
nodeElm.append('tr').attr('class', 'rpd-inlets')
.append('td')
.append('table').append('tbody').append('tr')
.append('div').attr('class', 'rpd-inlets-target'); // -> node/add-inlet
// remove button
nodeElm.append('tr').attr('class', 'rpd-remove-button')
.append('td').text('x');
// node content
nodeElm.append('tr').attr('class', 'rpd-content')
.classed('rpd-drag-handle', true) // a mark for renderer
.call(function(tr) {
tr.append('td').attr('class', 'rpd-body')
.append('div')
.append('table').append('tbody').append('tr').append('td')
.append('div').attr('class', 'rpd-process-target'); // -> node/process
})
// outlets placeholder
nodeElm.append('tr').attr('class', 'rpd-outlets')
.append('td')
.append('table').append('tbody').append('tr')
.append('div').attr('class', 'rpd-outlets-target'); // -> node/add-outlet
return {
element: nodeElm.node(),
size: render.size ? { width: render.size.width || 30, height: render.size.height || 20 }
: { width: 30, height: 20 }
};
},
createInlet: function(inlet, render) {
var inletElm = d3.select(document.createElement('td')).attr('class', 'rpd-inlet')
.call(function(td) {
td.append('span').attr('class', 'rpd-connector');
td.append('span').attr('class', 'rpd-name').text(inlet.def.label || inlet.alias);
td.append('span').attr('class', 'rpd-value-holder')
.append('span').attr('class', 'rpd-value');
if (config.showTypes) td.append('span').attr('class', 'rpd-type').text(inlet.type);
});
inletToConnector[inlet.id] = inletElm.select('.rpd-connector');
return { element: inletElm.node() };
},
createOutlet: function(outlet, render) {
var outletElm = d3.select(document.createElement('td')).attr('class', 'rpd-outlet')
.call(function(td) {
td.append('span').attr('class', 'rpd-connector');
td.append('span').attr('class', 'rpd-name').text(outlet.def.label || outlet.alias);
td.append('span').attr('class', 'rpd-value');
if (config.showTypes) td.append('span').attr('class', 'rpd-type').text(outlet.type);
});
outletToConnector[outlet.id] = outletElm.select('.rpd-connector');
return { element: outletElm.node() };
},
createLink: function(link) {
var linkElm = d3.select(document.createElement('span'))
.attr('class', 'rpd-link')
.style('position', 'absolute')
.style('transform-origin', 'left top')
.style('-webkit-transform-origin', 'left top');
return {
element: linkElm.node(),
rotate: function(x0, y0, x1, y1) {
var distance = Math.sqrt(((x0 - x1) * (x0 - x1)) +
((y0 - y1) * (y0 - y1)));
var angle = Math.atan2(y1 - y0, x1 - x0);
linkElm.style('left', x0 + 'px').style('top', y0 + 'px')
.style('width', Math.floor(distance) + 'px')
.style('transform', 'rotateZ(' + angle + 'rad)')
.style('-webkit-transform', 'rotateZ(' + angle + 'rad)');
}
}
},
getInletPos: function(inlet) {
var connectorPos = getPos(inletToConnector[inlet.id].node());
return { x: connectorPos.x + 3, y: connectorPos.y + 3 };
//return getPos(inletToConnector[inlet.id].node());
},
getOutletPos: function(outlet) {
var connectorPos = getPos(outletToConnector[outlet.id].node());
return { x: connectorPos.x + 3, y: connectorPos.y + 3 };
},
getLocalPos: function(pos) {
if (!lastCanvas) return pos;
// calculate once on patch switch?
var canvasPos = getPos(lastCanvas.node());
return { x: pos.x - canvasPos.x, y: pos.y - canvasPos.y };
},
onPatchSwitch: function(patch, canvas) {
lastCanvas = d3.select(canvas);
}
};
});
})(this);