mirror of
https://github.com/pcottle/learnGitBranching.git
synced 2025-06-27 08:28:50 +02:00
873 lines
22 KiB
JavaScript
873 lines
22 KiB
JavaScript
var VisBranch = Backbone.Model.extend({
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defaults: {
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pos: null,
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text: null,
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rect: null,
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arrow: null,
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isHead: false,
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flip: 1,
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fill: GRAPHICS.rectFill,
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stroke: GRAPHICS.rectStroke,
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'stroke-width': GRAPHICS.rectStrokeWidth,
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offsetX: GRAPHICS.nodeRadius * 4.75,
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offsetY: 0,
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arrowHeight: 14,
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arrowInnerSkew: 0,
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arrowEdgeHeight: 6,
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arrowLength: 14,
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arrowOffsetFromCircleX: 10,
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vPad: 5,
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hPad: 5,
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animationSpeed: GRAPHICS.defaultAnimationTime,
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animationEasing: GRAPHICS.defaultEasing
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},
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validateAtInit: function() {
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if (!this.get('branch')) {
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throw new Error('need a branch!');
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}
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},
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getID: function() {
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return this.get('branch').get('id');
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},
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initialize: function() {
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this.validateAtInit();
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this.get('branch').set('visBranch', this);
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var id = this.get('branch').get('id');
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if (id == 'HEAD') {
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// switch to a head ref
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this.set('isHead', true);
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this.set('flip', -1);
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this.set('fill', GRAPHICS.headRectFill);
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} else if (id !== 'master') {
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// we need to set our color to something random
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this.set('fill', randomHueString());
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}
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},
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getCommitPosition: function() {
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var commit = gitEngine.getCommitFromRef(this.get('branch'));
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var visNode = commit.get('visNode');
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return visNode.getScreenCoords();
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},
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getBranchStackIndex: function() {
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if (this.get('isHead')) {
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// head is never stacked with other branches
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return 0;
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}
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var myArray = this.getBranchStackArray();
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var index = -1;
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_.each(myArray, function(branch, i) {
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if (branch.obj == this.get('branch')) {
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index = i;
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}
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}, this);
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return index;
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},
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getBranchStackLength: function() {
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if (this.get('isHead')) {
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// head is always by itself
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return 1;
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}
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return this.getBranchStackArray().length;
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},
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getBranchStackArray: function() {
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var arr = gitVisuals.branchStackMap[this.get('branch').get('target').get('id')];
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if (arr === undefined) {
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// this only occurs when we are generating graphics inside of
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// a new Branch instantiation, so we need to force the update
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gitVisuals.calcBranchStacks();
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return this.getBranchStackArray();
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}
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return arr;
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},
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getTextPosition: function() {
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var pos = this.getCommitPosition();
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// then order yourself accordingly. we use alphabetical sorting
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// so everything is independent
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var myPos = this.getBranchStackIndex();
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return {
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x: pos.x + this.get('flip') * this.get('offsetX'),
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y: pos.y + myPos * GRAPHICS.multiBranchY + this.get('offsetY')
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};
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},
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getRectPosition: function() {
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var pos = this.getTextPosition();
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var f = this.get('flip');
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// first get text width and height
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var textSize = this.getTextSize();
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return {
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x: pos.x - 0.5 * textSize.w - this.get('hPad'),
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y: pos.y - 0.5 * textSize.h - this.get('vPad')
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}
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},
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getArrowPath: function() {
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// should make these util functions...
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var offset2d = function(pos, x, y) {
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return {
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x: pos.x + x,
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y: pos.y + y
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};
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};
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var toStringCoords = function(pos) {
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return String(Math.round(pos.x)) + ',' + String(Math.round(pos.y));
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};
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var f = this.get('flip');
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var arrowTip = offset2d(this.getCommitPosition(),
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f * this.get('arrowOffsetFromCircleX'),
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0
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);
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var arrowEdgeUp = offset2d(arrowTip, f * this.get('arrowLength'), -this.get('arrowHeight'));
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var arrowEdgeLow = offset2d(arrowTip, f * this.get('arrowLength'), this.get('arrowHeight'));
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var arrowInnerUp = offset2d(arrowEdgeUp,
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f * this.get('arrowInnerSkew'),
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this.get('arrowEdgeHeight')
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);
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var arrowInnerLow = offset2d(arrowEdgeLow,
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f * this.get('arrowInnerSkew'),
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-this.get('arrowEdgeHeight')
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);
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var tailLength = 49;
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var arrowStartUp = offset2d(arrowInnerUp, f * tailLength, 0);
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var arrowStartLow = offset2d(arrowInnerLow, f * tailLength, 0);
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var pathStr = '';
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pathStr += 'M' + toStringCoords(arrowStartUp) + ' ';
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var coords = [
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arrowInnerUp,
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arrowEdgeUp,
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arrowTip,
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arrowEdgeLow,
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arrowInnerLow,
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arrowStartLow
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];
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_.each(coords, function(pos) {
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pathStr += 'L' + toStringCoords(pos) + ' ';
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}, this);
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pathStr += 'z';
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return pathStr;
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},
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getTextSize: function() {
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var getTextWidth = function(visBranch) {
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var textNode = visBranch.get('text').node;
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return textNode.clientWidth;
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};
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var textNode = this.get('text').node;
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if (this.get('isHead')) {
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// HEAD is a special case
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return {
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w: textNode.clientWidth,
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h: textNode.clientHeight
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};
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}
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var maxWidth = 0;
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_.each(this.getBranchStackArray(), function(branch) {
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maxWidth = Math.max(maxWidth, getTextWidth(
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branch.obj.get('visBranch')
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));
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});
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return {
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w: maxWidth,
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h: textNode.clientHeight
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};
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},
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getSingleRectSize: function() {
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var textSize = this.getTextSize();
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var vPad = this.get('vPad');
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var hPad = this.get('hPad');
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return {
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w: textSize.w + vPad * 2,
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h: textSize.h + hPad * 2
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};
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},
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getRectSize: function() {
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var textSize = this.getTextSize();
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// enforce padding
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var vPad = this.get('vPad');
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var hPad = this.get('hPad');
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// number of other branch names we are housing
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var totalNum = this.getBranchStackLength();
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return {
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w: textSize.w + vPad * 2,
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h: textSize.h * totalNum * 1.1 + hPad * 2
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};
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},
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getName: function() {
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var name = this.get('branch').get('id');
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var selected = gitEngine.HEAD.get('target').get('id');
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var add = (selected == name) ? '*' : '';
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return name + add;
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},
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nonTextToFront: function() {
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this.get('arrow').toFront();
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this.get('rect').toFront();
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},
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textToFront: function() {
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this.get('text').toFront();
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},
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getFill: function() {
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// in the easy case, just return your own fill if you are:
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// - the HEAD ref
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// - by yourself (length of 1)
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// - part of a multi branch, but your thing is hidden
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if (this.get('isHead') ||
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this.getBranchStackLength() == 1 ||
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this.getBranchStackIndex() != 0) {
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return this.get('fill');
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}
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// woof. now it's hard, we need to blend hues...
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return gitVisuals.blendHuesFromBranchStack(this.getBranchStackArray());
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},
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remove: function() {
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var keys = ['text', 'arrow', 'rect'];
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_.each(keys, function(key) {
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if (this.get(key)) {
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this.get(key).remove();
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}
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}, this);
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// also need to remove from gitVisuals
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gitVisuals.removeVisBranch(this);
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},
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genGraphics: function(paper) {
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var textPos = this.getTextPosition();
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var name = this.getName();
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var text = paper.text(textPos.x, textPos.y, String(name));
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text.attr({
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'font-size': 14,
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'font-family': 'Monaco, Courier, font-monospace',
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opacity: this.getTextOpacity()
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});
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this.set('text', text);
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var rectPos = this.getRectPosition();
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var sizeOfRect = this.getRectSize();
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var rect = paper
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.rect(rectPos.x, rectPos.y, sizeOfRect.w, sizeOfRect.h, 8)
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.attr(this.getAttributes().rect);
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this.set('rect', rect);
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var arrowPath = this.getArrowPath();
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var arrow = paper
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.path(arrowPath)
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.attr(this.getAttributes().arrow);
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this.set('arrow', arrow);
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rect.toFront();
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text.toFront();
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},
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updateName: function() {
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this.get('text').attr({
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text: this.getName()
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});
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},
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getNonTextOpacity: function() {
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if (this.get('isHead')) {
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return gitEngine.getDetachedHead() ? 1 : 0;
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}
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return this.getBranchStackIndex() == 0 ? 1 : 0.0;
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},
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getTextOpacity: function() {
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if (this.get('isHead')) {
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return gitEngine.getDetachedHead() ? 1 : 0;
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}
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return 1;
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},
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getAttributes: function() {
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var nonTextOpacity = this.getNonTextOpacity();
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var textOpacity = this.getTextOpacity();
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this.updateName();
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var textPos = this.getTextPosition();
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var rectPos = this.getRectPosition();
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var rectSize = this.getRectSize();
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var arrowPath = this.getArrowPath();
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return {
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text: {
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x: textPos.x,
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y: textPos.y,
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opacity: textOpacity
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},
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rect: {
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x: rectPos.x,
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y: rectPos.y,
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width: rectSize.w,
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height: rectSize.h,
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opacity: nonTextOpacity,
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fill: this.getFill(),
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stroke: this.get('stroke'),
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'stroke-width': this.get('stroke-width')
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},
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arrow: {
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path: arrowPath,
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opacity: nonTextOpacity,
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fill: this.getFill(),
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stroke: this.get('stroke'),
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'stroke-width': this.get('stroke-width')
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}
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};
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},
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animateUpdatedPos: function(speed, easing) {
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var attr = this.getAttributes();
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this.animateToAttr(attr, speed, easing);
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},
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animateFromAttrToAttr: function(fromAttr, toAttr, speed, easing) {
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// an animation of 0 is essentially setting the attribute directly
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this.animateToAttr(fromAttr, 0);
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this.animateToAttr(toAttr, speed, easing);
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},
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animateToAttr: function(attr, speed, easing) {
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var func = 'animate';
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if (speed == 0) {
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func = 'attr';
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}
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var s = speed !== undefined ? speed : this.get('animationSpeed');
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var e = easing || this.get('animationEasing');
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this.get('text').stop()[func](attr.text, s, e);
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this.get('rect').stop()[func](attr.rect, s, e);
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this.get('arrow').stop()[func](attr.arrow, s, e);
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}
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});
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var VisNode = Backbone.Model.extend({
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defaults: {
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depth: undefined,
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maxWidth: null,
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outgoingEdges: null,
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circle: null,
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text: null,
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id: null,
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pos: null,
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radius: null,
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commit: null,
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animationSpeed: GRAPHICS.defaultAnimationTime,
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animationEasing: GRAPHICS.defaultEasing,
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fill: GRAPHICS.defaultNodeFill,
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'stroke-width': GRAPHICS.defaultNodeStrokeWidth,
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stroke: GRAPHICS.defaultNodeStroke
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},
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getID: function() {
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return this.get('id');
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},
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validateAtInit: function() {
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if (!this.get('id')) {
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throw new Error('need id for mapping');
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}
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if (!this.get('commit')) {
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throw new Error('need commit for linking');
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}
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if (!this.get('pos')) {
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this.set('pos', {
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x: Math.random(),
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y: Math.random()
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});
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}
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},
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initialize: function() {
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this.validateAtInit();
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this.set('outgoingEdges', []);
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},
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setDepthBasedOn: function(depthIncrement) {
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if (this.get('depth') === undefined) {
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throw new Error('no depth yet!');
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}
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var pos = this.get('pos');
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pos.y = this.get('depth') * depthIncrement;
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},
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getMaxWidthScaled: function() {
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// returns our max width scaled based on if we are visible
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// from a branch or not
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var stat = gitVisuals.getCommitUpstreamStatus(this.get('commit'));
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var map = {
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branch: 1,
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head: 0.3,
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none: 0.1
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};
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if (map[stat] === undefined) { throw new Error('bad stat'); }
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return map[stat] * this.get('maxWidth');
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},
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toFront: function() {
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this.get('circle').toFront();
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this.get('text').toFront();
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},
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getOpacity: function() {
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var map = {
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'branch': 1,
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'head': GRAPHICS.upstreamHeadOpacity,
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'none': GRAPHICS.upstreamNoneOpacity
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};
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var stat = gitVisuals.getCommitUpstreamStatus(this.get('commit'));
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if (map[stat] === undefined) {
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throw new Error('invalid status');
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}
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return map[stat];
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},
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getTextScreenCoords: function() {
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return this.getScreenCoords();
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},
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getAttributes: function() {
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var pos = this.getScreenCoords();
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var textPos = this.getTextScreenCoords();
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var opacity = this.getOpacity();
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return {
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circle: {
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cx: pos.x,
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cy: pos.y,
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opacity: opacity,
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r: this.getRadius(),
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fill: this.getFill(),
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'stroke-width': this.get('stroke-width'),
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'stroke': this.get('stroke')
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},
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text: {
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x: textPos.x,
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y: textPos.y,
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opacity: opacity
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}
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};
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},
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animateUpdatedPosition: function(speed, easing) {
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var attr = this.getAttributes();
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this.animateToAttr(attr, speed, easing);
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},
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animateFromAttrToAttr: function(fromAttr, toAttr, speed, easing) {
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// an animation of 0 is essentially setting the attribute directly
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this.animateToAttr(fromAttr, 0);
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this.animateToAttr(toAttr, speed, easing);
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},
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animateToSnapshot: function(snapShot, speed, easing) {
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console.log('animating to snapshot', snapShot, this.getID());
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if (!snapShot[this.getID()]) {
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return;
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}
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this.animateToAttr(snapShot[this.getID()], speed, easing);
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},
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animateToAttr: function(attr, speed, easing) {
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var func = 'animate';
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if (speed == 0) {
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func = 'attr';
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}
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var s = speed !== undefined ? speed : this.get('animationSpeed');
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var e = easing || this.get('animationEasing');
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this.get('circle').stop()[func](attr.circle, s, e);
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this.get('text').stop()[func](attr.text, s, e);
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},
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getScreenCoords: function() {
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var pos = this.get('pos');
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return gitVisuals.toScreenCoords(pos);
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},
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getRadius: function() {
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return this.get('radius') || GRAPHICS.nodeRadius;
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},
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getParentScreenCoords: function() {
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return this.get('commit').get('parents')[0].get('visNode').getScreenCoords();
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},
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setBirthPosition: function() {
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// utility method for animating it out from underneath a parent
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var parentCoords = this.getParentScreenCoords();
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this.get('circle').attr({
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cx: parentCoords.x,
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cy: parentCoords.y,
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opacity: 0,
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r: 0,
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});
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this.get('text').attr({
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x: parentCoords.x,
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y: parentCoords.y,
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opacity: 0,
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});
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},
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setBirthFromSnapshot: function(beforeSnapshot) {
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// first get parent attribute
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var parentID = this.get('commit').get('parents')[0].get('visNode').getID();
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var parentAttr = beforeSnapshot[parentID];
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// then set myself faded on top of parent
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this.get('circle').attr({
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opacity: 0,
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r: 0,
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cx: parentAttr.circle.cx,
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cy: parentAttr.circle.cy
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});
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this.get('text').attr({
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opacity: 0,
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x: parentAttr.text.x,
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y: parentAttr.text.y
|
|
});
|
|
|
|
// then do edges
|
|
var parentCoords = {
|
|
x: parentAttr.circle.cx,
|
|
y: parentAttr.circle.cy
|
|
};
|
|
this.setOutgoingEdgesBirthPosition(parentCoords);
|
|
},
|
|
|
|
setBirth: function() {
|
|
this.setBirthPosition();
|
|
this.setOutgoingEdgesBirthPosition(this.getParentScreenCoords());
|
|
},
|
|
|
|
setOutgoingEdgesOpacity: function(opacity) {
|
|
_.each(this.get('outgoingEdges'), function(edge) {
|
|
edge.setOpacity(opacity);
|
|
});
|
|
},
|
|
|
|
animateOutgoingEdgesToAttr: function(snapShot, speed, easing) {
|
|
_.each(this.get('outgoingEdges'), function(edge) {
|
|
var attr = snapShot[edge.getID()];
|
|
edge.animateToAttr(attr);
|
|
}, this);
|
|
},
|
|
|
|
animateOutgoingEdges: function(speed, easing) {
|
|
_.each(this.get('outgoingEdges'), function(edge) {
|
|
edge.animateUpdatedPath(speed, easing);
|
|
}, this);
|
|
},
|
|
|
|
animateOutgoingEdgesFromSnapshot: function(snapshot, speed, easing) {
|
|
_.each(this.get('outgoingEdges'), function(edge) {
|
|
var attr = snapshot[edge.getID()];
|
|
edge.animateToAttr(attr, speed, easing);
|
|
}, this);
|
|
},
|
|
|
|
setOutgoingEdgesBirthPosition: function(parentCoords) {
|
|
|
|
_.each(this.get('outgoingEdges'), function(edge) {
|
|
var headPos = edge.get('head').getScreenCoords();
|
|
var path = edge.genSmoothBezierPathStringFromCoords(parentCoords, headPos);
|
|
edge.get('path').stop().attr({
|
|
path: path,
|
|
opacity: 0
|
|
});
|
|
}, this);
|
|
},
|
|
|
|
parentInFront: function() {
|
|
// woof! talk about bad data access
|
|
this.get('commit').get('parents')[0].get('visNode').toFront();
|
|
},
|
|
|
|
getFontSize: function(str) {
|
|
if (str.length < 3) {
|
|
return 12;
|
|
} else if (str.length < 5) {
|
|
return 10;
|
|
} else {
|
|
return 8;
|
|
}
|
|
},
|
|
|
|
getFill: function() {
|
|
// first get our status, might be easy from this
|
|
var stat = gitVisuals.getCommitUpstreamStatus(this.get('commit'));
|
|
if (stat == 'head') {
|
|
return GRAPHICS.headRectFill;
|
|
} else if (stat == 'none') {
|
|
return GRAPHICS.orphanNodeFill;
|
|
}
|
|
|
|
// now we need to get branch hues
|
|
|
|
return gitVisuals.getBlendedHuesForCommit(this.get('commit'));
|
|
return this.get('fill');
|
|
},
|
|
|
|
attachClickHandlers: function() {
|
|
var commandStr = 'git show ' + this.get('commit').get('id');
|
|
_.each([this.get('circle'), this.get('text')], function(rObj) {
|
|
rObj.click(function() {
|
|
events.trigger('processCommandFromEvent', commandStr);
|
|
});
|
|
});
|
|
},
|
|
|
|
setOpacity: function(opacity) {
|
|
opacity = (opacity === undefined) ? 1 : opacity;
|
|
|
|
// set the opacity on my stuff
|
|
var keys = ['circle', 'text'];
|
|
_.each(keys, function(key) {
|
|
this.get(key).attr({
|
|
opacity: opacity
|
|
});
|
|
}, this);
|
|
},
|
|
|
|
genGraphics: function(paper) {
|
|
var pos = this.getScreenCoords();
|
|
var textPos = this.getTextScreenCoords();
|
|
|
|
var circle = paper.circle(
|
|
pos.x,
|
|
pos.y,
|
|
this.getRadius()
|
|
).attr(this.getAttributes().circle);
|
|
|
|
var text = paper.text(textPos.x, textPos.y, String(this.get('id')));
|
|
text.attr({
|
|
'font-size': this.getFontSize(this.get('id')),
|
|
'font-weight': 'bold',
|
|
'font-family': 'Monaco, Courier, font-monospace',
|
|
opacity: this.getOpacity()
|
|
});
|
|
|
|
this.set('circle', circle);
|
|
this.set('text', text);
|
|
|
|
this.attachClickHandlers();
|
|
}
|
|
});
|
|
|
|
var VisEdge = Backbone.Model.extend({
|
|
defaults: {
|
|
tail: null,
|
|
head: null,
|
|
animationSpeed: GRAPHICS.defaultAnimationTime,
|
|
animationEasing: GRAPHICS.defaultEasing
|
|
},
|
|
|
|
validateAtInit: function() {
|
|
required = ['tail', 'head'];
|
|
_.each(required, function(key) {
|
|
if (!this.get(key)) {
|
|
throw new Error(key + ' is required!');
|
|
}
|
|
}, this);
|
|
},
|
|
|
|
getID: function() {
|
|
return this.get('tail').get('id') + '.' + this.get('head').get('id');
|
|
},
|
|
|
|
initialize: function() {
|
|
this.validateAtInit();
|
|
|
|
this.get('tail').get('outgoingEdges').push(this);
|
|
},
|
|
|
|
genSmoothBezierPathString: function(tail, head) {
|
|
var tailPos = tail.getScreenCoords();
|
|
var headPos = head.getScreenCoords();
|
|
return this.genSmoothBezierPathStringFromCoords(tailPos, headPos);
|
|
},
|
|
|
|
genSmoothBezierPathStringFromCoords: function(tailPos, headPos) {
|
|
// we need to generate the path and control points for the bezier. format
|
|
// is M(move abs) C (curve to) (control point 1) (control point 2) (final point)
|
|
// the control points have to be __below__ to get the curve starting off straight.
|
|
|
|
var coords = function(pos) {
|
|
return String(Math.round(pos.x)) + ',' + String(Math.round(pos.y));
|
|
};
|
|
var offset = function(pos, dir, delta) {
|
|
delta = delta || GRAPHICS.curveControlPointOffset;
|
|
return {
|
|
x: pos.x,
|
|
y: pos.y + delta * dir
|
|
};
|
|
};
|
|
var offset2d = function(pos, x, y) {
|
|
return {
|
|
x: pos.x + x,
|
|
y: pos.y + y
|
|
};
|
|
};
|
|
|
|
// first offset tail and head by radii
|
|
tailPos = offset(tailPos, -1, this.get('tail').getRadius());
|
|
headPos = offset(headPos, 1, this.get('head').getRadius());
|
|
|
|
var str = '';
|
|
// first move to bottom of tail
|
|
str += 'M' + coords(tailPos) + ' ';
|
|
// start bezier
|
|
str += 'C';
|
|
// then control points above tail and below head
|
|
str += coords(offset(tailPos, -1)) + ' ';
|
|
str += coords(offset(headPos, 1)) + ' ';
|
|
// now finish
|
|
str += coords(headPos);
|
|
|
|
// arrow head
|
|
var delta = GRAPHICS.arrowHeadSize || 10;
|
|
str += ' L' + coords(offset2d(headPos, -delta, delta));
|
|
str += ' L' + coords(offset2d(headPos, delta, delta));
|
|
str += ' L' + coords(headPos);
|
|
|
|
// then go back, so we can fill correctly
|
|
str += 'C';
|
|
str += coords(offset(headPos, 1)) + ' ';
|
|
str += coords(offset(tailPos, -1)) + ' ';
|
|
str += coords(tailPos);
|
|
|
|
return str;
|
|
},
|
|
|
|
getBezierCurve: function() {
|
|
return this.genSmoothBezierPathString(this.get('tail'), this.get('head'));
|
|
},
|
|
|
|
getStrokeColor: function() {
|
|
return GRAPHICS.visBranchStrokeColorNone;
|
|
},
|
|
|
|
setOpacity: function(opacity) {
|
|
opacity = (opacity === undefined) ? 1 : opacity;
|
|
|
|
this.get('path').attr({opacity: opacity});
|
|
},
|
|
|
|
genGraphics: function(paper) {
|
|
var pathString = this.getBezierCurve();
|
|
|
|
var path = paper.path(pathString).attr({
|
|
'stroke-width': GRAPHICS.visBranchStrokeWidth,
|
|
'stroke': this.getStrokeColor(),
|
|
'stroke-linecap': 'round',
|
|
'stroke-linejoin': 'round',
|
|
'fill': this.getStrokeColor()
|
|
});
|
|
path.toBack();
|
|
this.set('path', path);
|
|
},
|
|
|
|
getOpacity: function() {
|
|
var stat = gitVisuals.getCommitUpstreamStatus(this.get('tail'));
|
|
var map = {
|
|
'branch': 1,
|
|
'head': GRAPHICS.edgeUpstreamHeadOpacity,
|
|
'none': GRAPHICS.edgeUpstreamNoneOpacity
|
|
};
|
|
|
|
if (map[stat] === undefined) { throw new Error('bad stat'); }
|
|
return map[stat];
|
|
},
|
|
|
|
getAttributes: function() {
|
|
var newPath = this.getBezierCurve();
|
|
var opacity = this.getOpacity();
|
|
return {
|
|
path: {
|
|
path: newPath,
|
|
opacity: opacity
|
|
}
|
|
};
|
|
},
|
|
|
|
animateUpdatedPath: function(speed, easing) {
|
|
var attr = this.getAttributes();
|
|
this.animateToAttr(attr, speed, easing);
|
|
},
|
|
|
|
animateFromAttrToAttr: function(fromAttr, toAttr, speed, easing) {
|
|
// an animation of 0 is essentially setting the attribute directly
|
|
this.animateToAttr(fromAttr, 0);
|
|
this.animateToAttr(toAttr, speed, easing);
|
|
},
|
|
|
|
animateToAttr: function(attr, speed, easing) {
|
|
var func = 'animate';
|
|
if (speed == 0) {
|
|
func = 'attr';
|
|
}
|
|
|
|
this.get('path').toBack();
|
|
this.get('path').stop()[func](
|
|
attr.path,
|
|
speed !== undefined ? speed : this.get('animationSpeed'),
|
|
easing || this.get('animationEasing')
|
|
);
|
|
},
|
|
|
|
});
|
|
|
|
var VisEdgeCollection = Backbone.Collection.extend({
|
|
model: VisEdge
|
|
});
|
|
|
|
var VisBranchCollection = Backbone.Collection.extend({
|
|
model: VisBranch
|
|
});
|