367 lines
10 KiB
JavaScript
367 lines
10 KiB
JavaScript
import { curveBasis, line, select } from 'd3';
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import db from './gitGraphAst.js';
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import { logger } from '../../logger.js';
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import { interpolateToCurve } from '../../utils.js';
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let allCommitsDict = {};
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let branchNum;
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let config = {
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nodeSpacing: 150,
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nodeFillColor: 'yellow',
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nodeStrokeWidth: 2,
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nodeStrokeColor: 'grey',
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lineStrokeWidth: 4,
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branchOffset: 50,
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lineColor: 'grey',
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leftMargin: 50,
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branchColors: ['#442f74', '#983351', '#609732', '#AA9A39'],
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nodeRadius: 10,
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nodeLabel: {
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width: 75,
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height: 100,
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x: -25,
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y: 0,
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},
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};
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let apiConfig = {};
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export const setConf = function (c) {
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apiConfig = c;
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};
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/** @param svg */
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function svgCreateDefs(svg) {
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svg
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.append('defs')
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.append('g')
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.attr('id', 'def-commit')
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.append('circle')
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.attr('r', config.nodeRadius)
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.attr('cx', 0)
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.attr('cy', 0);
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svg
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.select('#def-commit')
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.append('foreignObject')
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.attr('width', config.nodeLabel.width)
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.attr('height', config.nodeLabel.height)
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.attr('x', config.nodeLabel.x)
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.attr('y', config.nodeLabel.y)
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.attr('class', 'node-label')
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.attr('requiredFeatures', 'http://www.w3.org/TR/SVG11/feature#Extensibility')
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.append('p')
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.html('');
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}
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/**
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* @param svg
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* @param points
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* @param colorIdx
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* @param interpolate
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*/
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function svgDrawLine(svg, points, colorIdx, interpolate) {
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const curve = interpolateToCurve(interpolate, curveBasis);
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const color = config.branchColors[colorIdx % config.branchColors.length];
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const lineGen = line()
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.x(function (d) {
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return Math.round(d.x);
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})
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.y(function (d) {
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return Math.round(d.y);
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})
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.curve(curve);
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svg
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.append('svg:path')
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.attr('d', lineGen(points))
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.style('stroke', color)
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.style('stroke-width', config.lineStrokeWidth)
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.style('fill', 'none');
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}
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// Pass in the element and its pre-transform coords
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/**
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* @param element
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* @param coords
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*/
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function getElementCoords(element, coords) {
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coords = coords || element.node().getBBox();
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const ctm = element.node().getCTM();
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const xn = ctm.e + coords.x * ctm.a;
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const yn = ctm.f + coords.y * ctm.d;
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return {
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left: xn,
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top: yn,
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width: coords.width,
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height: coords.height,
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};
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}
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/**
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* @param svg
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* @param fromId
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* @param toId
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* @param direction
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* @param color
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*/
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function svgDrawLineForCommits(svg, fromId, toId, direction, color) {
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logger.debug('svgDrawLineForCommits: ', fromId, toId);
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const fromBbox = getElementCoords(svg.select('#node-' + fromId + ' circle'));
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const toBbox = getElementCoords(svg.select('#node-' + toId + ' circle'));
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switch (direction) {
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case 'LR':
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// (toBbox)
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// +--------
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// + (fromBbox)
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if (fromBbox.left - toBbox.left > config.nodeSpacing) {
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const lineStart = {
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x: fromBbox.left - config.nodeSpacing,
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y: toBbox.top + toBbox.height / 2,
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};
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const lineEnd = { x: toBbox.left + toBbox.width, y: toBbox.top + toBbox.height / 2 };
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svgDrawLine(svg, [lineStart, lineEnd], color, 'linear');
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svgDrawLine(
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svg,
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[
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{ x: fromBbox.left, y: fromBbox.top + fromBbox.height / 2 },
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{ x: fromBbox.left - config.nodeSpacing / 2, y: fromBbox.top + fromBbox.height / 2 },
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{ x: fromBbox.left - config.nodeSpacing / 2, y: lineStart.y },
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lineStart,
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],
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color
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);
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} else {
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svgDrawLine(
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svg,
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[
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{
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x: fromBbox.left,
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y: fromBbox.top + fromBbox.height / 2,
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},
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{
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x: fromBbox.left - config.nodeSpacing / 2,
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y: fromBbox.top + fromBbox.height / 2,
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},
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{
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x: fromBbox.left - config.nodeSpacing / 2,
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y: toBbox.top + toBbox.height / 2,
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},
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{
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x: toBbox.left + toBbox.width,
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y: toBbox.top + toBbox.height / 2,
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},
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],
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color
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);
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}
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break;
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case 'BT':
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// + (fromBbox)
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// |
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// |
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// + (toBbox)
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if (toBbox.top - fromBbox.top > config.nodeSpacing) {
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const lineStart = {
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x: toBbox.left + toBbox.width / 2,
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y: fromBbox.top + fromBbox.height + config.nodeSpacing,
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};
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const lineEnd = { x: toBbox.left + toBbox.width / 2, y: toBbox.top };
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svgDrawLine(svg, [lineStart, lineEnd], color, 'linear');
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svgDrawLine(
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svg,
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[
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{ x: fromBbox.left + fromBbox.width / 2, y: fromBbox.top + fromBbox.height },
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{
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x: fromBbox.left + fromBbox.width / 2,
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y: fromBbox.top + fromBbox.height + config.nodeSpacing / 2,
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},
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{ x: toBbox.left + toBbox.width / 2, y: lineStart.y - config.nodeSpacing / 2 },
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lineStart,
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],
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color
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);
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} else {
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svgDrawLine(
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svg,
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[
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{
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x: fromBbox.left + fromBbox.width / 2,
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y: fromBbox.top + fromBbox.height,
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},
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{
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x: fromBbox.left + fromBbox.width / 2,
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y: fromBbox.top + config.nodeSpacing / 2,
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},
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{
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x: toBbox.left + toBbox.width / 2,
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y: toBbox.top - config.nodeSpacing / 2,
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},
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{
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x: toBbox.left + toBbox.width / 2,
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y: toBbox.top,
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},
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],
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color
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);
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}
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break;
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}
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}
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/**
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* @param svg
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* @param selector
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*/
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function cloneNode(svg, selector) {
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return svg.select(selector).node().cloneNode(true);
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}
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/**
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* @param svg
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* @param commitId
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* @param branches
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* @param direction
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*/
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function renderCommitHistory(svg, commitId, branches, direction) {
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let commit;
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const numCommits = Object.keys(allCommitsDict).length;
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if (typeof commitId === 'string') {
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do {
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commit = allCommitsDict[commitId];
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logger.debug('in renderCommitHistory', commit.id, commit.seq);
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if (svg.select('#node-' + commitId).size() > 0) {
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return;
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}
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svg
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.append(function () {
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return cloneNode(svg, '#def-commit');
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})
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.attr('class', 'commit')
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.attr('id', function () {
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return 'node-' + commit.id;
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})
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.attr('transform', function () {
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switch (direction) {
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case 'LR':
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return (
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'translate(' +
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(commit.seq * config.nodeSpacing + config.leftMargin) +
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', ' +
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branchNum * config.branchOffset +
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')'
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);
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case 'BT':
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return (
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'translate(' +
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(branchNum * config.branchOffset + config.leftMargin) +
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', ' +
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(numCommits - commit.seq) * config.nodeSpacing +
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')'
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);
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}
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})
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.attr('fill', config.nodeFillColor)
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.attr('stroke', config.nodeStrokeColor)
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.attr('stroke-width', config.nodeStrokeWidth);
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let branch;
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for (let branchName in branches) {
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if (branches[branchName].commit === commit) {
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branch = branches[branchName];
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break;
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}
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}
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if (branch) {
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logger.debug('found branch ', branch.name);
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svg
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.select('#node-' + commit.id + ' p')
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.append('xhtml:span')
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.attr('class', 'branch-label')
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.text(branch.name + ', ');
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}
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svg
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.select('#node-' + commit.id + ' p')
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.append('xhtml:span')
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.attr('class', 'commit-id')
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.text(commit.id);
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if (commit.message !== '' && direction === 'BT') {
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svg
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.select('#node-' + commit.id + ' p')
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.append('xhtml:span')
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.attr('class', 'commit-msg')
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.text(', ' + commit.message);
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}
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commitId = commit.parent;
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} while (commitId && allCommitsDict[commitId]);
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}
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if (Array.isArray(commitId)) {
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logger.debug('found merge commit', commitId);
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renderCommitHistory(svg, commitId[0], branches, direction);
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branchNum++;
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renderCommitHistory(svg, commitId[1], branches, direction);
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branchNum--;
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}
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}
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/**
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* @param svg
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* @param commit
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* @param direction
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* @param branchColor
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*/
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function renderLines(svg, commit, direction, branchColor = 0) {
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while (commit.seq > 0 && !commit.lineDrawn) {
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if (typeof commit.parent === 'string') {
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svgDrawLineForCommits(svg, commit.id, commit.parent, direction, branchColor);
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commit.lineDrawn = true;
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commit = allCommitsDict[commit.parent];
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} else if (Array.isArray(commit.parent)) {
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svgDrawLineForCommits(svg, commit.id, commit.parent[0], direction, branchColor);
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svgDrawLineForCommits(svg, commit.id, commit.parent[1], direction, branchColor + 1);
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renderLines(svg, allCommitsDict[commit.parent[1]], direction, branchColor + 1);
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commit.lineDrawn = true;
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commit = allCommitsDict[commit.parent[0]];
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}
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}
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}
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export const draw = function (txt, id, ver) {
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try {
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logger.debug('in gitgraph renderer', txt + '\n', 'id:', id, ver);
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config = Object.assign(config, apiConfig, db.getOptions());
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logger.debug('effective options', config);
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const direction = db.getDirection();
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allCommitsDict = db.getCommits();
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const branches = db.getBranchesAsObjArray();
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if (direction === 'BT') {
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config.nodeLabel.x = branches.length * config.branchOffset;
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config.nodeLabel.width = '100%';
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config.nodeLabel.y = -1 * 2 * config.nodeRadius;
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}
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const svg = select(`[id="${id}"]`);
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svgCreateDefs(svg);
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branchNum = 1;
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for (let branch in branches) {
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const v = branches[branch];
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renderCommitHistory(svg, v.commit.id, branches, direction);
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renderLines(svg, v.commit, direction);
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branchNum++;
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}
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svg.attr('height', function () {
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if (direction === 'BT') {
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return Object.keys(allCommitsDict).length * config.nodeSpacing;
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}
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return (branches.length + 1) * config.branchOffset;
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});
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} catch (e) {
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logger.error('Error while rendering gitgraph');
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logger.error(e.message);
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}
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};
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export default {
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setConf,
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draw,
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};
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