Merged in bugfix/topic-background (pull request #14)

Fix topic background

* Fix Textpeer getNativePosition implementation (broken with jQuery removal)

* Remove time-bound waits from cypress tests


Approved-by: Paulo Veiga

packages/mindplot/cypress/integration/playground.test.js

@@ -10,18 +10,19 @@ context('Playground', () => {
   });
   it('the playground viewmode.html page should match its snapshot', () => {
     cy.visit('/viewmode.html');
+    cy.get('#mindplot.ready').should('exist');
     cy.matchImageSnapshot('viewmode');
   });
   it('the playground container.html page should match its snapshot', () => {
     cy.visit('/container.html');
-    // TODO: wait for mind map to load instead of an arbitrary number of ms
-    cy.wait(5000);
+    cy.getIframeBody()
+      .find('#mindplot.ready')
+      .should('exist');
     cy.matchImageSnapshot('container');
   });
   it('the playground editor.html page should match its snapshot', () => {
     cy.visit('/editor.html');
-    // TODO: wait for mind map to load instead of an arbitrary number of ms
-    cy.wait(5000);
+    cy.get('#mindplot.ready').should('exist');
     // TODO: why is the editor appearing twice in the snapshot?
     cy.matchImageSnapshot('editor');
   });

packages/mindplot/cypress/support/commands.js

@@ -13,3 +13,9 @@ if (Cypress.env('imageSnaphots')) {
     () => Promise.resolve(),
   );
 }
+
+// https://www.cypress.io/blog/2020/02/12/working-with-iframes-in-cypress/
+Cypress.Commands.add('getIframeBody', () => cy
+  .get('iframe')
+  .its('0.contentDocument.body').should('not.be.empty')
+  .then(cy.wrap));

packages/mindplot/test/playground/map-render/js/editor.js

@@ -7,6 +7,10 @@ const example = async () => {
   const options = await loadDesignerOptions();
   const designer = buildDesigner(options);
 
+  designer.addEvent('loadSuccess', () => {
+    document.getElementById('mindplot').classList.add('ready');
+  });
+
   // Load map from XML file persisted on disk...
   const persistence = PersistenceManager.getInstance();
   const mindmap = persistence.load(mapId);

packages/mindplot/test/playground/map-render/js/embedded.js

@@ -10,6 +10,9 @@ const example = async () => {
   const options = await loadDesignerOptions(confUrl);
   const designer = buildDesigner(options);
 
+  designer.addEvent('loadSuccess', () => {
+    document.getElementById('mindplot').classList.add('ready');
+  });
   // Load map from XML file persisted on disk...
   const persistence = PersistenceManager.getInstance();
   let mindmap;

packages/mindplot/test/playground/map-render/js/viewmode.js

@@ -8,7 +8,9 @@ const example = async () => {
   const options = await loadDesignerOptions();
   options.readOnly = true;
   const designer = buildDesigner(options);
-
+  designer.addEvent('loadSuccess', () => {
+    document.getElementById('mindplot').classList.add('ready');
+  });
   // Load map from XML file persisted on disk...
   const persistence = PersistenceManager.getInstance();
   let mindmap;

packages/web2d/src/components/peer/svg/TextPeer.js

@@ -17,6 +17,7 @@
  */
 import { $defined } from '@wisemapping/core-js';
 import ElementPeer from './ElementPeer';
+import { getPosition } from '../utils/DomUtils';
 
 class TextPeer extends ElementPeer {
   constructor(Font) {
@@ -80,13 +81,7 @@ class TextPeer extends ElementPeer {
   }
 
   getNativePosition() {
-    const computedStyles = window.getComputedStyle(this._native);
-    const marginTop = computedStyles.getPropertyValue('margin-top') || 0;
-    const marginLeft = computedStyles.getPropertyValue('margin-left') || 0;
-    return {
-      top: this._native.offsetTop - parseFloat(marginTop),
-      left: this._native.offsetLeft - parseFloat(marginLeft),
-    };
+    return getPosition(this._native);
   }
 
   setFont(font, size, style, weight) {

packages/web2d/src/components/peer/utils/DomUtils.js

@@ -0,0 +1,62 @@
+/* eslint-disable import/prefer-default-export */
+
+// quick hand-made version of $.css()
+export const getStyle = (elem, prop) => {
+  const result = window.getComputedStyle(elem)[prop];
+  if (typeof result === 'string' && /px$/.test(result)) {
+    return parseFloat(result);
+  }
+  return result;
+};
+
+// offset and position utils extracted and adapted from jquery source
+// https://github.com/jquery/jquery/blob/main/src/offset.js
+export const getOffset = (elem) => {
+  if (!elem || !elem.getClientRects().length) {
+    return { top: 0, left: 0 };
+  }
+  // Get document-relative position by adding viewport scroll to viewport-relative gBCR
+  const rect = elem.getBoundingClientRect();
+  const win = elem.ownerDocument.defaultView;
+  return {
+    top: rect.top + win.pageYOffset,
+    left: rect.left + win.pageXOffset,
+  };
+};
+
+export const getPosition = (elem) => {
+  let offsetParent;
+  let offset;
+  let doc;
+  let parentOffset = { top: 0, left: 0 };
+
+  // position:fixed elements are offset from the viewport, which itself always has zero offset
+  if (getStyle(elem, 'position') === 'fixed') {
+    // Assume position:fixed implies availability of getBoundingClientRect
+    offset = elem.getBoundingClientRect();
+  } else {
+    offset = getOffset(elem);
+
+    // Account for the *real* offset parent, which can be the document or its root element
+    // when a statically positioned element is identified
+    doc = elem.ownerDocument;
+    offsetParent = elem.offsetParent || doc.documentElement;
+    while (offsetParent
+          && (offsetParent === doc.body || offsetParent === doc.documentElement)
+          && getStyle(offsetParent, 'position') === 'static') {
+      offsetParent = offsetParent.parentNode;
+    }
+    if (offsetParent && offsetParent !== elem && offsetParent.nodeType === 1) {
+      // Incorporate borders into its offset, since they are outside its content origin
+      parentOffset = getOffset(offsetParent);
+      parentOffset.top += getStyle(offsetParent, 'borderTopWidth');
+      parentOffset.left += getStyle(offsetParent, 'borderLeftWidth');
+    }
+  }
+
+  // Subtract parent offsets and element margins
+  return {
+    top: offset.top - parentOffset.top - getStyle(elem, 'marginTop'),
+    left: offset.left - parentOffset.left - getStyle(elem, 'marginLeft'),
+  };
+};