Precalculate labels position in converters

src/app/cartography/cartography.module.ts

@@ -39,6 +39,8 @@ import { SelectionControlComponent } from './components/selection-control/select
 import { SelectionSelectComponent } from './components/selection-select/selection-select.component';
 import { DraggableSelectionComponent } from './components/draggable-selection/draggable-selection.component';
 import { MapSettingsManager } from './managers/map-settings-manager';
+import { FontBBoxCalculator } from './helpers/font-bbox-calculator';
+import { StylesToFontConverter } from './converters/styles-to-font-converter';
 
 
 @NgModule({
@@ -89,6 +91,8 @@ import { MapSettingsManager } from './managers/map-settings-manager';
     MapSymbolsDataSource,
     SelectionEventSource,
     MapSettingsManager,
+    FontBBoxCalculator,
+    StylesToFontConverter,
     ...D3_MAP_IMPORTS
   ],
   exports: [ D3MapComponent, ExperimentalMapComponent ]

src/app/cartography/converters/map/label-to-map-label-converter.ts

@@ -3,10 +3,18 @@ import { Injectable } from "@angular/core";
 import { Converter } from "../converter";
 import { Label } from "../../models/label";
 import { MapLabel } from "../../models/map/map-label";
+import { FontBBoxCalculator } from '../../helpers/font-bbox-calculator';
+import { CssFixer } from '../../helpers/css-fixer';
+import { FontFixer } from '../../helpers/font-fixer';
 
 
 @Injectable()
 export class LabelToMapLabelConverter implements Converter<Label, MapLabel> {
+  constructor(
+    private fontBBoxCalculator: FontBBoxCalculator,
+    private cssFixer: CssFixer,
+    private fontFixer: FontFixer
+  ) {}
   convert(label: Label, paramaters?: {[node_id: string]: string}) {
     const mapLabel = new MapLabel();
     mapLabel.rotation = label.rotation;
@@ -14,10 +22,26 @@ export class LabelToMapLabelConverter implements Converter<Label, MapLabel> {
     mapLabel.text = label.text;
     mapLabel.x = label.x;
     mapLabel.y = label.y;
+    mapLabel.originalX = label.x;
+    mapLabel.originalY = label.y;
+
     if (paramaters !== undefined) {
       mapLabel.id = paramaters.node_id;
       mapLabel.nodeId = paramaters.node_id;
     }
+
+    const fixedCss = this.cssFixer.fix(mapLabel.style);
+    const fixedFont = this.fontFixer.fixStyles(fixedCss);
+    const box = this.fontBBoxCalculator.calculate(mapLabel.text, fixedFont);
+    
+    if (mapLabel.x !== null) {
+      mapLabel.x += 3;
+    }
+
+    if (mapLabel.y !== null) {
+      mapLabel.y += box.height;
+    }
+
     return mapLabel;
   }
 }

src/app/cartography/converters/map/map-label-to-label-converter.ts

@@ -3,17 +3,33 @@ import { Injectable } from "@angular/core";
 import { Converter } from "../converter";
 import { Label } from "../../models/label";
 import { MapLabel } from "../../models/map/map-label";
+import { FontBBoxCalculator } from '../../helpers/font-bbox-calculator';
 
 
 @Injectable()
 export class MapLabelToLabelConverter implements Converter<MapLabel, Label> {
+  constructor(
+    private fontBBoxCalculator: FontBBoxCalculator
+  ) {}
+
   convert(mapLabel: MapLabel) {
+    const box = this.fontBBoxCalculator.calculate(mapLabel.text, mapLabel.style);
+
     const label = new Label();
     label.rotation = mapLabel.rotation;
     label.style = mapLabel.style;
     label.text = mapLabel.text;
     label.x = mapLabel.x;
     label.y = mapLabel.y;
+
+    if (label.x !== null) {
+      label.x += 3;
+    }
+
+    if (label.y !== null) {
+      label.y -= box.height;
+    }
+
     return label;
   }
 }

src/app/cartography/converters/map/map-node-to-node-converter.ts

@@ -5,38 +5,41 @@ import { MapNode } from "../../models/map/map-node";
 import { MapLabelToLabelConverter } from "./map-label-to-label-converter";
 import { MapPortToPortConverter } from "./map-port-to-port-converter";
 import { Node } from "../../models/node";
+import { FontBBoxCalculator } from '../../helpers/font-bbox-calculator';
+import { CssFixer } from '../../helpers/css-fixer';
+import { FontFixer } from '../../helpers/font-fixer';
 
 
 @Injectable()
 export class MapNodeToNodeConverter implements Converter<MapNode, Node> {
-    constructor(
+  constructor(
-        private mapLabelToLabel: MapLabelToLabelConverter,
+    private mapLabelToLabel: MapLabelToLabelConverter,
-        private mapPortToPort: MapPortToPortConverter
+    private mapPortToPort: MapPortToPortConverter
-    ) {}
+  ) {}
-    
+  
-    convert(mapNode: MapNode) {
+  convert(mapNode: MapNode) {
-        const node = new Node();
+    const node = new Node();
-        node.node_id = mapNode.id;
+    node.node_id = mapNode.id;
-        node.command_line = mapNode.commandLine;
+    node.command_line = mapNode.commandLine;
-        node.compute_id = mapNode.computeId;
+    node.compute_id = mapNode.computeId;
-        node.console = mapNode.console;
+    node.console = mapNode.console;
-        node.console_host = mapNode.consoleHost;
+    node.console_host = mapNode.consoleHost;
-        node.first_port_name = mapNode.firstPortName;
+    node.first_port_name = mapNode.firstPortName;
-        node.height = mapNode.height;
+    node.height = mapNode.height;
-        node.label = mapNode.label ? this.mapLabelToLabel.convert(mapNode.label) : undefined;
+    node.label = mapNode.label ? this.mapLabelToLabel.convert(mapNode.label) : undefined;
-        node.name = mapNode.name;
+    node.name = mapNode.name;
-        node.node_directory = mapNode.nodeDirectory;
+    node.node_directory = mapNode.nodeDirectory;
-        node.node_type = mapNode.nodeType;
+    node.node_type = mapNode.nodeType;
-        node.port_name_format = mapNode.portNameFormat;
+    node.port_name_format = mapNode.portNameFormat;
-        node.port_segment_size = mapNode.portSegmentSize;
+    node.port_segment_size = mapNode.portSegmentSize;
-        node.ports = mapNode.ports ? mapNode.ports.map((mapPort) => this.mapPortToPort.convert(mapPort)) : [];
+    node.ports = mapNode.ports ? mapNode.ports.map((mapPort) => this.mapPortToPort.convert(mapPort)) : [];
-        node.project_id = mapNode.projectId;
+    node.project_id = mapNode.projectId;
-        node.status = mapNode.status;
+    node.status = mapNode.status;
-        node.symbol = mapNode.symbol;
+    node.symbol = mapNode.symbol;
-        node.width = mapNode.width;
+    node.width = mapNode.width;
-        node.x = mapNode.x;
+    node.x = mapNode.x;
-        node.y = mapNode.y;
+    node.y = mapNode.y;
-        node.z = mapNode.z;
+    node.z = mapNode.z;
-        return node;
+    return node;
-    }
+  }
 }

src/app/cartography/converters/map/node-to-map-node-converter.ts

@@ -5,38 +5,56 @@ import { MapNode } from "../../models/map/map-node";
 import { Node } from "../../models/node";
 import { LabelToMapLabelConverter } from "./label-to-map-label-converter";
 import { PortToMapPortConverter } from "./port-to-map-port-converter";
+import { FontBBoxCalculator } from '../../helpers/font-bbox-calculator';
+import { CssFixer } from '../../helpers/css-fixer';
+import { FontFixer } from '../../helpers/font-fixer';
 
 
 @Injectable()
 export class NodeToMapNodeConverter implements Converter<Node, MapNode> {
-    constructor(
+  constructor(
-        private labelToMapLabel: LabelToMapLabelConverter,
+    private labelToMapLabel: LabelToMapLabelConverter,
-        private portToMapPort: PortToMapPortConverter
+    private portToMapPort: PortToMapPortConverter,
-    ) {}
+    private fontBBoxCalculator: FontBBoxCalculator,
+    private cssFixer: CssFixer,
+    private fontFixer: FontFixer
+  ) {}
     
-    convert(node: Node) {
+  convert(node: Node) {
-        const mapNode = new MapNode();
+    const mapNode = new MapNode();
-        mapNode.id = node.node_id;
+    mapNode.id = node.node_id;
-        mapNode.commandLine = node.command_line;
+    mapNode.commandLine = node.command_line;
-        mapNode.computeId = node.compute_id;
+    mapNode.computeId = node.compute_id;
-        mapNode.console = node.console;
+    mapNode.console = node.console;
-        mapNode.consoleHost = node.console_host;
+    mapNode.consoleHost = node.console_host;
-        mapNode.firstPortName = node.first_port_name;
+    mapNode.firstPortName = node.first_port_name;
-        mapNode.height = node.height;
+    mapNode.height = node.height;
-        mapNode.label = this.labelToMapLabel.convert(node.label, { node_id: node.node_id });
+    mapNode.label = this.labelToMapLabel.convert(node.label, { node_id: node.node_id });
-        mapNode.name = node.name;
+    mapNode.name = node.name;
-        mapNode.nodeDirectory = node.node_directory;
+    mapNode.nodeDirectory = node.node_directory;
-        mapNode.nodeType = node.node_type;
+    mapNode.nodeType = node.node_type;
-        mapNode.portNameFormat = node.port_name_format;
+    mapNode.portNameFormat = node.port_name_format;
-        mapNode.portSegmentSize = node.port_segment_size;
+    mapNode.portSegmentSize = node.port_segment_size;
-        mapNode.ports = node.ports.map((port) => this.portToMapPort.convert(port));
+    mapNode.ports = node.ports.map((port) => this.portToMapPort.convert(port));
-        mapNode.projectId = node.project_id;
+    mapNode.projectId = node.project_id;
-        mapNode.status = node.status;
+    mapNode.status = node.status;
-        mapNode.symbol = node.symbol;
+    mapNode.symbol = node.symbol;
-        mapNode.width = node.width;
+    mapNode.width = node.width;
-        mapNode.x = node.x;
+    mapNode.x = node.x;
-        mapNode.y = node.y;
+    mapNode.y = node.y;
-        mapNode.z = node.z;
+    mapNode.z = node.z;
-        return mapNode;        
+
+
+    if (mapNode.label !== undefined) {
+      const fixedCss = this.cssFixer.fix(mapNode.label.style);
+      const fixedFont = this.fontFixer.fixStyles(fixedCss);
+      const box = this.fontBBoxCalculator.calculate(mapNode.label.text, fixedFont);
+
+      if (node.label.x === null || node.label.y === null) {
+        mapNode.label.x = node.width / 2. - box.width / 2. + 3;
+        mapNode.label.y = -8;
+      }
     }
+    return mapNode;        
+  }
 }

src/app/cartography/converters/styles-to-font-converter.spec.ts

@@ -0,0 +1,24 @@
+import { Font } from "../models/font";
+import { StylesToFontConverter } from './styles-to-font-converter';
+
+
+describe('StylesToFontConverter', () => {
+  let converter: StylesToFontConverter;
+
+  beforeEach(() => {
+    converter = new StylesToFontConverter();
+  });
+
+  it('should parse fonts from styles', () => {
+    const styles = "font-family: TypeWriter; font-size: 10px; font-weight: bold";
+
+    const expectedFont: Font = {
+      'font_family': 'TypeWriter',
+      'font_size': 10,
+      'font_weight': 'bold'
+    };
+
+    expect(converter.convert(styles)).toEqual(expectedFont);
+  });
+
+});

src/app/cartography/converters/styles-to-font-converter.ts

@@ -0,0 +1,47 @@
+import * as csstree from 'css-tree';
+
+import { Injectable } from "@angular/core";
+import { Converter } from './converter';
+import { Font } from '../models/font';
+
+
+@Injectable()
+export class StylesToFontConverter implements Converter<string, Font> {
+  convert(styles: string) {
+    const font: Font = {
+      'font_family': undefined,
+      'font_size': undefined,
+      'font_weight': undefined
+    };
+
+    const ast = csstree.parse(styles, {
+      'context': 'declarationList'
+    });
+
+    ast.children.forEach((child) => {
+      if (child.property === 'font-size') {
+        child.value.children.forEach((value) => {
+          if (value.type === 'Dimension') {
+            font.font_size = parseInt(value.value);
+          }
+        });
+      }
+      if (child.property === 'font-family') {
+        child.value.children.forEach((value) => {
+          if (value.type === "Identifier") {
+            font.font_family = value.name;
+          }
+        });
+      }
+      if (child.property === 'font-weight') {
+        child.value.children.forEach((value) => {
+          if (value.type === "Identifier") {
+            font.font_weight = value.name;
+          }
+        });
+      }
+    });
+
+    return font;
+  }
+}

src/app/cartography/events/draggable.ts

@@ -62,7 +62,6 @@ export class Draggable<GElement extends DraggedElementBaseType, Datum> {
         const evt = new DraggableDrag<Datum>(datum);
         evt.dx = event.sourceEvent.clientX - lastX;
         evt.dy = event.sourceEvent.clientY - lastY;
-
         lastX = event.sourceEvent.clientX;
         lastY = event.sourceEvent.clientY;
 

src/app/cartography/helpers/css-fixer.ts

@@ -6,7 +6,7 @@ import { Injectable } from "@angular/core";
 @Injectable()
 export class CssFixer {
 
-  public fix(styles: string) {
+  public fix(styles: string): string {
     const ast = csstree.parse(styles, {
       'context': 'declarationList'
     });

src/app/cartography/helpers/font-bbox-calculator.spec.ts

@@ -0,0 +1,24 @@
+import { FontBBoxCalculator } from "./font-bbox-calculator";
+
+
+describe('FontBBoxCalculator', () => {
+  let calculator: FontBBoxCalculator;
+
+  beforeEach(() => {
+    calculator = new FontBBoxCalculator();
+  });
+
+  it('should calculate font width and height', () => {
+    const box = calculator.calculate("My text", "font-family:Arial; font-size: 12px; font-weight:bold");
+
+    expect(box.height).toEqual(14);
+    expect(box.width).toEqual(41.34375);
+  });
+
+  it('should calculate font width and height for different font', () => {
+    const box = calculator.calculate("My text", "font-family:Tahoma; font-size: 14px; font-weight:bold");
+
+    expect(box.height).toEqual(15);
+    expect(box.width).toEqual(46.25);
+  });
+});

src/app/cartography/helpers/font-bbox-calculator.ts

@@ -0,0 +1,20 @@
+import { Injectable } from "@angular/core";
+
+@Injectable()
+export class FontBBoxCalculator {
+  calculate(text: string, styles: string) {
+    const element = document.createElement("text");
+    element.innerText = text;
+    element.setAttribute("fill", "#00000");
+    element.setAttribute("fill-opacity", "0");
+    element.setAttribute("style", styles);
+    document.documentElement.appendChild(element);
+    const bbox = element.getBoundingClientRect();
+    document.documentElement.removeChild(element);
+
+    return {
+      width: bbox.width,
+      height: bbox.height
+    }
+  }
+}

src/app/cartography/models/map/map-label.ts

@@ -7,5 +7,7 @@ export class MapLabel implements Indexed {
   text: string;
   x: number;
   y: number;
+  originalX: number;
+  originalY: number;
   nodeId: string;
 }

src/app/cartography/widgets/label.ts

@@ -22,7 +22,7 @@ export class LabelWidget implements Widget {
     private cssFixer: CssFixer,
     private fontFixer: FontFixer,
     private selectionManager: SelectionManager,
-    private mapSettings: MapSettingsManager,
+    private mapSettings: MapSettingsManager
   ) {}
 
   public redrawLabel(view: SVGSelection, label: MapLabel) {
@@ -56,6 +56,8 @@ export class LabelWidget implements Widget {
 
 
   private drawLabel(view: SVGSelection) {
+    const self = this;
+
     const label_body = view.selectAll<SVGGElement, MapLabel>("g.label_body")
       .data((label) => [label]);
 
@@ -77,31 +79,14 @@ export class LabelWidget implements Widget {
     label_body_merge
       .select<SVGTextElement>('text.label')
         .attr('label_id', (l: MapLabel) => l.id)
-        // .attr('y', (n: Node) => n.label.y - n.height / 2. + 10)  // @todo: server computes y in auto way
         .attr('style', (l: MapLabel) => {
           let styles = this.cssFixer.fix(l.style);
           styles = this.fontFixer.fixStyles(styles);
           return styles;
         })
         .text((l: MapLabel) => l.text)
-        .attr('x', function (this: SVGTextElement, l: MapLabel) {
+        .attr('x', (l: MapLabel) => l.x)
-          // if (l.x === null) {
+        .attr('y', (l: MapLabel) => l.y)
-          //   // center
-          //   const bbox = this.getBBox();
-          //   return -bbox.width / 2.;
-          // }
-          return l.x + LabelWidget.NODE_LABEL_MARGIN;
-        })
-        .attr('y', function (this: SVGTextElement, l: MapLabel) {
-          let bbox = this.getBBox();
-
-          // if (n.label.x === null) {
-          //   // center
-          //   bbox = this.getBBox();
-          //   return - n.height / 2. - bbox.height ;
-          // }
-          return l.y + bbox.height - LabelWidget.NODE_LABEL_MARGIN - bbox.height*0.14;
-        })
         .attr('transform', (l: MapLabel) => {
           return `rotate(${l.rotation}, ${l.x}, ${l.y})`;
         })

src/app/components/project-map/project-map-shortcuts/project-map-shortcuts.component.spec.ts

@@ -23,6 +23,9 @@ import { MapNode } from '../../../cartography/models/map/map-node';
 import { MapLabelToLabelConverter } from '../../../cartography/converters/map/map-label-to-label-converter';
 import { MapPortToPortConverter } from '../../../cartography/converters/map/map-port-to-port-converter';
 import { Node } from '../../../cartography/models/node';
+import { FontBBoxCalculator } from '../../../cartography/helpers/font-bbox-calculator';
+import { CssFixer } from '../../../cartography/helpers/css-fixer';
+import { FontFixer } from '../../../cartography/helpers/font-fixer';
 
 
 describe('ProjectMapShortcutsComponent', () => {
@@ -56,7 +59,11 @@ describe('ProjectMapShortcutsComponent', () => {
         SettingsService,
         MapNodeToNodeConverter,
         MapLabelToLabelConverter,
-        MapPortToPortConverter
+        MapPortToPortConverter,
+        MapLabelToLabelConverter,
+        FontBBoxCalculator,
+        CssFixer,
+        FontFixer
       ],
       declarations: [ ProjectMapShortcutsComponent ]
     })

src/app/components/project-map/project-map.component.ts

@@ -39,6 +39,7 @@ import { MapPortToPortConverter } from '../../cartography/converters/map/map-por
 import { SettingsService, Settings } from '../../services/settings.service';
 import { MapLabel } from '../../cartography/models/map/map-label';
 import { MapLinkNode } from '../../cartography/models/map/map-link-node';
+import { MapLabelToLabelConverter } from '../../cartography/converters/map/map-label-to-label-converter';
 
 
 @Component({
@@ -91,6 +92,7 @@ export class ProjectMapComponent implements OnInit, OnDestroy {
     private drawingsEventSource: DrawingsEventSource,
     private linksEventSource: LinksEventSource,
     private settingsService: SettingsService,
+    private mapLabelToLabel: MapLabelToLabelConverter
   ) {}
 
   ngOnInit() {
@@ -234,7 +236,7 @@ export class ProjectMapComponent implements OnInit, OnDestroy {
   onNodeCreation(appliance: Appliance) {
     this.nodeService
       .createFromAppliance(this.server, this.project, appliance, 0, 0, 'local')
-      .subscribe(() => {
+      .subscribe((createdNode: Node) => {
         this.projectService
           .nodes(this.server, this.project.project_id)
           .subscribe((nodes: Node[]) => {
@@ -257,8 +259,12 @@ export class ProjectMapComponent implements OnInit, OnDestroy {
 
   private onNodeLabelDragged(draggedEvent: DraggedDataEvent<MapLabel>) {
     const node = this.nodesDataSource.get(draggedEvent.datum.nodeId);
-    node.label.x += draggedEvent.dx;
+    const mapLabel = draggedEvent.datum;
-    node.label.y += draggedEvent.dy;
+    mapLabel.x += draggedEvent.dx;
+    mapLabel.y += draggedEvent.dy;
+
+    const label = this.mapLabelToLabel.convert(mapLabel);
+    node.label = label;
 
     this.nodeService
       .updateLabel(this.server, node, node.label)