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Björn Eßwein
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Scroll View</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<style>
body {
font-size: 100px;
}
[dropzone] {
background-color: yellow;
}
#rectangle {
width: 10px;
height: 10px;
position: absolute;
background-color: red;
}
.demoFact {
font-size: initial;
margin-top: 20px;
}
</style>
</head>
<body>
<math>
<mi>E</mi>
<mo>=</mo>
<mfenced>
<mtable>
<mtr>
<mtd>
<mi dropzone="copy" data-allowed-types="PointFact,AngleFact" data-slot-id="http://mathhub.info/FrameIT/frameworld?Example?A">a</mi>
</mtd>
<mtd>
<mi dropzone="copy" data-slot-id="http://mathhub.info/FrameIT/frameworld?Example?B">b</mi>
</mtd>
<mtd>
<mn>0</mn>
</mtd>
</mtr>
<mtr>
<mtd>
<mn>0</mn>
</mtd>
<mtd>
<mn>1</mn>
</mtd>
<mtd>
<mn>0</mn>
</mtd>
</mtr>
<mtr>
<mtd>
<mn>0</mn>
</mtd>
<mtd>
<mn>0</mn>
</mtd>
<mtd>
<mn>1</mn>
</mtd>
</mtr>
</mtable>
</math>
<div class="demoFact">{
"s_type": "PointFact",
"label": "A",
"_CustomLabel": null,
"hasCustomLabel": false,
"labelId": 0,
"point": {"x": -1.66086578, "y": -0.00494432449, "z": -2.17682648},
"normal": {"x": 0.1, "y": 1.2, "z": 0.3}
}</div>
<div class="demoFact">{
"pid1": "http://mathhub.info/FrameIT/frameworld?DefaultSituationSpace/SituationTheory1?fact252",
"pid2": "http://mathhub.info/FrameIT/frameworld?DefaultSituationSpace/SituationTheory1?fact254",
"pid3": "http://mathhub.info/FrameIT/frameworld?DefaultSituationSpace/SituationTheory1?fact256",
"s_type": "AngleFact",
"label": "∠BDF",
"_CustomLabel": null,
"is_right_angle": false,
"hasCustomLabel": false,
"labelId": 0
}</div>
<div class="demoFact">{
"s_type": "LineFact",
"pid1": "http://mathhub.info/FrameIT/frameworld?DefaultSituationSpace/SituationTheory1?fact255",
"pid2": "http://mathhub.info/FrameIT/frameworld?DefaultSituationSpace/SituationTheory1?fact256",
"dir": {"x": 0.1, "y": 1.2, "z": 0.3},
"label": "[EF]",
"_CustomLabel": null,
"hasCustomLabel": false,
"labelId": 0
}</div>
<div class="demoFact">{
"s_type": "RayFact",
"pid1": "http://mathhub.info/FrameIT/frameworld?DefaultSituationSpace/SituationTheory1?fact256",
"pid2": "http://mathhub.info/FrameIT/frameworld?DefaultSituationSpace/SituationTheory1?fact252",
"dir": {"x": 0.1, "y": 1.2, "z": 0.3},
"label": "FB",
"_CustomLabel": null,
"hasCustomLabel": false,
"labelId": 0
}</div>
</body>
<script>
/**
* @typedef Point
* @type {object}
* @property {number} x
* @property {number} y
* @property {number} z
*/
/**
* @property {Point} point
* @property {Point} normal
* @property {string} s_type
* @property {string} label
* @property {string|null} _CustomLabel
* @property {boolean} hasCustomLabel
* @property {number} labelId
*/
class Fact {
/** @property {string} id Fact id */
id = ""
/** @property {string} s_type Fact type */
s_type = ""
/** @property {string} label used in unity */
label = ""
/** @property {string | null} _CustomLabel Custom label */
_CustomLabel = null
/** @property {boolean} hasCustomLabel */
hasCustomLabel = false
/** @property {number} labelId */
labelId = 0
}
class Point {
/** @property {number} x */
x = 0
/** @property {number} y */
y = 0
/** @property {number} z */
z = 0
}
/**
s_type: PointFact,
label: A,
_CustomLabel: null,
hasCustomLabel: false,
labelId: 0,
point: {x: -1.66086578, y: -0.00494432449, z: -2.17682648},
normal: {x: 0, y: 1, z: 0}
*/
class PointFact extends Fact {
s_type = "PointFact";
/** @property {Point} point */
point = new Point()
/** @property {Point} normal */
normal = new Point()
}
/**
* pid1: http://mathhub.info/FrameIT/frameworld?DefaultSituationSpace/SituationTheory1?fact252,
pid2: http://mathhub.info/FrameIT/frameworld?DefaultSituationSpace/SituationTheory1?fact254,
pid3: http://mathhub.info/FrameIT/frameworld?DefaultSituationSpace/SituationTheory1?fact256,
s_type: AngleFact,
label: ∠BDF,
_CustomLabel: null,
is_right_angle: false,
hasCustomLabel: false,
labelId: 0
*/
class AngleFact extends Fact {
s_type = "AngleFact";
pid1 = "";
pid2 = "";
pid3 = "";
is_right_angle = false;
}
/**
* s_type: LineFact,
pid1: http://mathhub.info/FrameIT/frameworld?DefaultSituationSpace/SituationTheory1?fact255,
pid2: http://mathhub.info/FrameIT/frameworld?DefaultSituationSpace/SituationTheory1?fact256,
dir: [object Object],
label: [EF],
_CustomLabel: null,
hasCustomLabel: false,
labelId: 0
*/
class LineFact extends Fact {
s_type = "LineFact";
pid1 = "";
pid2 = "";
dir = new Point();
}
/**
* s_type: RayFact,
pid1: http://mathhub.info/FrameIT/frameworld?DefaultSituationSpace/SituationTheory1?fact256,
pid2: http://mathhub.info/FrameIT/frameworld?DefaultSituationSpace/SituationTheory1?fact252,
dir: [object Object],
label: FB,
_CustomLabel: null,
hasCustomLabel: false,
labelId: 0
*/
class RayFact extends Fact {
s_type = "RayFact";
pid1 = "";
pid2 = "";
dir = new Point();
}
/** @param {DragEvent} event */
function dropHandler(event) {
event.preventDefault()
const data = event.dataTransfer.getData("application/json")
//const data = event.dataTransfer.getData("text/plain")
console.log(`Droped data: '${event.dataTransfer.types}'`, event.dataTransfer.types)
/** @type {Fact} */
const fact = JSON.parse(data)
console.warn(`Droped Fact '${fact.label}':`, fact)
/** @type {HTMLElement} */
const element = event.target
if (element.hasAttribute("data-allowed-types")) {
//const allowedTypesStr = element.dataset["allowed-types"]
const allowedTypesStr = element.getAttribute("data-allowed-types")
const allowedTypes = allowedTypesStr.split(",")
if (!allowedTypes.includes(fact.s_type)) {
console.warn(`The drop target data-type '${fact.s_type}' is not a member of the allowed types '${allowedTypesStr}'`)
return
}
}
element.innerHTML = fact.label
element.fact = fact
element.dataset.factId = fact.id
}
/*
* debug functions
*/
/** @param {DragEvent} event */
function printHandler(event, evName) {
let items = event.dataTransfer.types
console.log(`${evName} getData: '${event.dataTransfer.getData("application/json")}'`, items)
console.log(`${evName} getData: '${event.dataTransfer.types}'`, items)
}
/** @param {DragEvent} event */
function printPreventDefaultHandler(event, evName) {
printHandler(event, evName)
event.preventDefault()
}
/*
* register the drag event listeners
*/
//document.addEventListener("dragstart", ev => printHandler(ev, "DragStartEvent"))
//document.addEventListener("dragenter", ev => printHandler(ev, "DragEnterEvent"))
//document.addEventListener("drag", ev => printHandler(ev, "DragEvent"))
document.addEventListener("dragover", ev => ev.preventDefault())
//document.addEventListener("dragover", ev => printPreventDefaultHandler(ev, "DragOverEvent"))
//document.addEventListener("dragleave", ev => printHandler(ev, "DragLeaveEvent"))
//document.addEventListener("dragend", ev => printHandler(ev, "DragEndEvent"))
// select all dropzones and add drop event listeners
let dropZones = document.querySelectorAll('[dropzone="copy"]')
dropZones.forEach( dropZone => dropZone.addEventListener("drop", ev => dropHandler(ev, "DropEvent")) )
</script>
<!--<script src="visualiseCursor.mjs" defer type="module"></script>-->
<!--<script>
/* mouse and pointer event handling */
const rectangle = document.createElement("div");
rectangle.id = "rectangle";
console.log("appendChild to", document.body)
document.body.appendChild(rectangle);
function followCursor(event) {
const cursorX = event.clientX;
const cursorY = event.clientY +5;
//console.log(`MouseEvent X: ${cursorX}, Y: ${cursorY}, Event type: ${event.type}`, event);
rectangle.style.left = `${cursorX}px`;
rectangle.style.top = `${cursorY}px`;
}
document.addEventListener("mousemove", followCursor);
document.addEventListener("pointermove", followCursor);
document.addEventListener("mouseover", followCursor);
document.addEventListener("pointerover", followCursor);
document.addEventListener("mouseout", followCursor);
document.addEventListener("pointerout", followCursor);
</script>-->
</html>