removal of link map service

This commit is contained in:
zadam 2021-05-31 21:31:07 +02:00
parent d4a955a3f5
commit bdff1c1246
2 changed files with 180 additions and 219 deletions

View File

@ -3,203 +3,5 @@ import server from "./server.js";
import froca from "./froca.js";
export default class LinkMap {
constructor(note, $linkMapContainer, options = {}) {
this.note = note;
this.options = Object.assign({
maxDepth: 10,
maxNotes: 100,
zoom: 1.0
}, options);
this.$linkMapContainer = $linkMapContainer;
this.zoomLevel = 1;
}
setZoomLevel(level) {
this.zoomLevel = level;
}
async render() {
await libraryLoader.requireLibrary(libraryLoader.FORCE_GRAPH);
this.graph = ForceGraph()(this.$linkMapContainer[0])
.width(this.options.width)
.height(this.options.height)
.onZoom(zoom => this.setZoomLevel(zoom.k))
.nodeRelSize(7)
.nodeCanvasObject((node, ctx) => this.paintNode(node, this.stringToColor(node.type), ctx))
.nodePointerAreaPaint((node, ctx) => this.paintNode(node, this.stringToColor(node.type), ctx))
.nodeLabel(node => node.name)
.maxZoom(5)
.nodePointerAreaPaint((node, color, ctx) => {
ctx.fillStyle = color;
ctx.beginPath();
ctx.arc(node.x, node.y, 5, 0, 2 * Math.PI, false);
ctx.fill();
})
.linkLabel(l => `${l.source.name} - <strong>${l.name}</strong> - ${l.target.name}`)
.linkCanvasObject((link, ctx) => this.paintLink(link, ctx))
.linkCanvasObjectMode(() => "after")
.linkDirectionalArrowLength(4)
.linkDirectionalArrowRelPos(1)
.linkWidth(2)
.linkColor("#ddd")
.d3VelocityDecay(0.2)
.onNodeClick(node => this.nodeClicked(node));
this.graph.d3Force('link').distance(50);
this.graph.d3Force('center').strength(0.9);
this.graph.d3Force('charge').strength(-30);
this.graph.d3Force('charge').distanceMax(400);
this.renderData(await this.loadNotesAndRelations());
}
renderData(data, zoomToFit = true, zoomPadding = 10) {
this.graph.graphData(data);
if (zoomToFit) {
setTimeout(() => this.graph.zoomToFit(400, zoomPadding), 1000);
}
}
setHeight(height) {
this.graph.height(height);
}
centerOnNode(node) {
this.nodeClicked(node);
this.graph.centerAt(node.x, node.y, 1000);
this.graph.zoom(6, 2000);
}
async nodeClicked(node) {
if (!node.expanded) {
const neighborGraph = await fetchNeighborGraph(node.id);
addToTasGraph(neighborGraph);
renderData(getTasGraph(), false);
}
}
async loadNotesAndRelations(options = {}) {
this.options = Object.assign(this.options, options);
const links = await server.post(`notes/${this.note.noteId}/link-map`, {
maxNotes: this.options.maxNotes,
maxDepth: this.options.maxDepth
});
const noteIds = new Set(links.map(l => l.noteId).concat(links.map(l => l.targetNoteId)));
if (noteIds.size === 0) {
noteIds.add(this.note.noteId);
}
// preload all notes
const notes = await froca.getNotes(Array.from(noteIds), true);
return {
nodes: notes.map(note => ({
id: note.noteId,
name: note.title,
type: note.type
})),
links: links.map(link => ({
id: link.noteId + "-" + link.name + "-" + link.targetNoteId,
source: link.noteId,
target: link.targetNoteId,
name: link.name
}))
};
}
cleanup() {
}
paintLink(link, ctx) {
if (this.zoomLevel < 3) {
return;
}
ctx.font = '3px MontserratLight';
ctx.textAlign = 'center';
ctx.textBaseline = 'middle';
ctx.fillStyle = "grey";
const {source, target} = link;
const x = (source.x + target.x) / 2;
const y = (source.y + target.y) / 2;
ctx.save();
ctx.translate(x, y);
const deltaY = source.y - target.y;
const deltaX = source.x - target.x;
let angle = Math.atan2(deltaY, deltaX);
let moveY = 2;
if (angle < -Math.PI / 2 || angle > Math.PI / 2) {
angle += Math.PI;
moveY = -2;
}
ctx.rotate(angle);
ctx.fillText(link.name, 0, moveY);
ctx.restore();
}
paintNode(node, color, ctx) {
const {x, y} = node;
ctx.fillStyle = color;
ctx.beginPath();
ctx.arc(x, y, 4, 0, 2 * Math.PI, false);
ctx.fill();
if (this.zoomLevel < 2) {
return;
}
if (!node.expanded) {
ctx.fillStyle = color;
ctx.font = 10 + 'px MontserratLight';
ctx.textAlign = 'center';
ctx.textBaseline = 'middle';
ctx.fillText("+", x, y + 1);
}
ctx.fillStyle = "#555";
ctx.font = 5 + 'px MontserratLight';
ctx.textAlign = 'center';
ctx.textBaseline = 'middle';
let title = node.name;
if (title.length > 15) {
title = title.substr(0, 15) + "...";
}
ctx.fillText(title, x, y + 7);
}
stringToColor(str) {
let hash = 0;
for (let i = 0; i < str.length; i++) {
hash = str.charCodeAt(i) + ((hash << 5) - hash);
}
let colour = '#';
for (let i = 0; i < 3; i++) {
const value = (hash >> (i * 8)) & 0xFF;
colour += ('00' + value.toString(16)).substr(-2);
}
return colour;
}
}

View File

@ -1,5 +1,7 @@
import NoteContextAwareWidget from "../note_context_aware_widget.js";
import froca from "../../services/froca.js";
import libraryLoader from "../../services/library_loader.js";
import server from "../../services/server.js";
const TPL = `
<div class="link-map-widget">
@ -42,6 +44,7 @@ export default class LinkMapWidget extends NoteContextAwareWidget {
doRender() {
this.$widget = $(TPL);
this.$container = this.$widget.find(".link-map-container");
this.$openFullButton = this.$widget.find('.open-full-button');
this.$openFullButton.on('click', () => {
@ -51,7 +54,7 @@ export default class LinkMapWidget extends NoteContextAwareWidget {
this.$widget.find('.link-map-container').css("height", maxHeight);
this.linkMapService.setHeight(maxHeight);
this.graph.height(maxHeight);
this.$openFullButton.hide();
this.$collapseButton.show();
@ -61,39 +64,195 @@ export default class LinkMapWidget extends NoteContextAwareWidget {
this.$collapseButton.on('click', () => {
this.$widget.find('.link-map-container,.force-graph-container,canvas').css("height", 300);
this.linkMapService.setHeight(300);
this.graph.height(300);
this.$openFullButton.show();
this.$collapseButton.hide();
});
this.overflowing();
}
async refreshWithNote(note) {
this.$widget.find(".link-map-container").empty();
const $linkMapContainer = this.$widget.find('.link-map-container');
const LinkMapServiceClass = (await import('../../services/link_map.js')).default;
this.linkMapService = new LinkMapServiceClass(note, $linkMapContainer, {
maxDepth: 3,
zoom: 0.6,
width: $linkMapContainer.width(),
height: $linkMapContainer.height()
});
await this.linkMapService.render();
setZoomLevel(level) {
this.zoomLevel = level;
}
cleanup() {
if (this.linkMapService) {
this.linkMapService.cleanup();
async refreshWithNote(note) {
this.$container.empty();
await libraryLoader.requireLibrary(libraryLoader.FORCE_GRAPH);
this.graph = ForceGraph()(this.$container[0])
.width(this.$container.width())
.height(this.$container.height())
.onZoom(zoom => this.setZoomLevel(zoom.k))
.nodeRelSize(7)
.nodeCanvasObject((node, ctx) => this.paintNode(node, this.stringToColor(node.type), ctx))
.nodePointerAreaPaint((node, ctx) => this.paintNode(node, this.stringToColor(node.type), ctx))
.nodeLabel(node => node.name)
.maxZoom(5)
.nodePointerAreaPaint((node, color, ctx) => {
ctx.fillStyle = color;
ctx.beginPath();
ctx.arc(node.x, node.y, 5, 0, 2 * Math.PI, false);
ctx.fill();
})
.linkLabel(l => `${l.source.name} - <strong>${l.name}</strong> - ${l.target.name}`)
.linkCanvasObject((link, ctx) => this.paintLink(link, ctx))
.linkCanvasObjectMode(() => "after")
.linkDirectionalArrowLength(4)
.linkDirectionalArrowRelPos(1)
.linkWidth(2)
.linkColor("#ddd")
.d3VelocityDecay(0.2)
.onNodeClick(node => this.nodeClicked(node));
this.graph.d3Force('link').distance(50);
this.graph.d3Force('center').strength(0.9);
this.graph.d3Force('charge').strength(-30);
this.graph.d3Force('charge').distanceMax(400);
this.renderData(await this.loadNotesAndRelations());
}
renderData(data, zoomToFit = true, zoomPadding = 10) {
this.graph.graphData(data);
if (zoomToFit) {
setTimeout(() => this.graph.zoomToFit(400, zoomPadding), 1000);
}
}
centerOnNode(node) {
this.nodeClicked(node);
this.graph.centerAt(node.x, node.y, 1000);
this.graph.zoom(6, 2000);
}
async nodeClicked(node) {
if (!node.expanded) {
const neighborGraph = await fetchNeighborGraph(node.id);
addToTasGraph(neighborGraph);
renderData(getTasGraph(), false);
}
}
async loadNotesAndRelations(options = {}) {
const links = await server.post(`notes/${this.note.noteId}/link-map`, {
maxNotes: 30,
maxDepth: 5
});
const noteIds = new Set(links.map(l => l.noteId).concat(links.map(l => l.targetNoteId)));
if (noteIds.size === 0) {
noteIds.add(this.note.noteId);
}
// preload all notes
const notes = await froca.getNotes(Array.from(noteIds), true);
return {
nodes: notes.map(note => ({
id: note.noteId,
name: note.title,
type: note.type
})),
links: links.map(link => ({
id: link.noteId + "-" + link.name + "-" + link.targetNoteId,
source: link.noteId,
target: link.targetNoteId,
name: link.name
}))
};
}
paintLink(link, ctx) {
if (this.zoomLevel < 3) {
return;
}
ctx.font = '3px MontserratLight';
ctx.textAlign = 'center';
ctx.textBaseline = 'middle';
ctx.fillStyle = "grey";
const {source, target} = link;
const x = (source.x + target.x) / 2;
const y = (source.y + target.y) / 2;
ctx.save();
ctx.translate(x, y);
const deltaY = source.y - target.y;
const deltaX = source.x - target.x;
let angle = Math.atan2(deltaY, deltaX);
let moveY = 2;
if (angle < -Math.PI / 2 || angle > Math.PI / 2) {
angle += Math.PI;
moveY = -2;
}
ctx.rotate(angle);
ctx.fillText(link.name, 0, moveY);
ctx.restore();
}
paintNode(node, color, ctx) {
const {x, y} = node;
ctx.fillStyle = color;
ctx.beginPath();
ctx.arc(x, y, 4, 0, 2 * Math.PI, false);
ctx.fill();
if (this.zoomLevel < 2) {
return;
}
if (!node.expanded) {
ctx.fillStyle = color;
ctx.font = 10 + 'px MontserratLight';
ctx.textAlign = 'center';
ctx.textBaseline = 'middle';
ctx.fillText("+", x, y + 1);
}
ctx.fillStyle = "#555";
ctx.font = 5 + 'px MontserratLight';
ctx.textAlign = 'center';
ctx.textBaseline = 'middle';
let title = node.name;
if (title.length > 15) {
title = title.substr(0, 15) + "...";
}
ctx.fillText(title, x, y + 7);
}
stringToColor(str) {
let hash = 0;
for (let i = 0; i < str.length; i++) {
hash = str.charCodeAt(i) + ((hash << 5) - hash);
}
let colour = '#';
for (let i = 0; i < 3; i++) {
const value = (hash >> (i * 8)) & 0xFF;
colour += ('00' + value.toString(16)).substr(-2);
}
return colour;
}
entitiesReloadedEvent({loadResults}) {
if (loadResults.getAttributes().find(attr => attr.type === 'relation' && (attr.noteId === this.noteId || attr.value === this.noteId))) {
this.noteSwitched();