three-stdlib
Version:
stand-alone library of threejs examples
327 lines (326 loc) • 12.1 kB
JavaScript
import { Mesh, PlaneGeometry, MeshBasicMaterial, CanvasTexture, LinearFilter, Color } from "three";
class HTMLMesh extends Mesh {
constructor(dom) {
const texture = new HTMLTexture(dom);
const geometry = new PlaneGeometry(texture.image.width * 1e-3, texture.image.height * 1e-3);
const material = new MeshBasicMaterial({ map: texture, toneMapped: false, transparent: true });
super(geometry, material);
function onEvent(event) {
material.map.dispatchDOMEvent(event);
}
this.addEventListener("mousedown", onEvent);
this.addEventListener("mousemove", onEvent);
this.addEventListener("mouseup", onEvent);
this.addEventListener("click", onEvent);
this.dispose = function() {
geometry.dispose();
material.dispose();
material.map.dispose();
canvases.delete(dom);
this.removeEventListener("mousedown", onEvent);
this.removeEventListener("mousemove", onEvent);
this.removeEventListener("mouseup", onEvent);
this.removeEventListener("click", onEvent);
};
}
}
class HTMLTexture extends CanvasTexture {
constructor(dom) {
super(html2canvas(dom));
this.dom = dom;
this.anisotropy = 16;
if ("colorSpace" in this)
this.colorSpace = "srgb";
else
this.encoding = 3001;
this.minFilter = LinearFilter;
this.magFilter = LinearFilter;
const observer = new MutationObserver(() => {
if (!this.scheduleUpdate) {
this.scheduleUpdate = setTimeout(() => this.update(), 16);
}
});
const config = { attributes: true, childList: true, subtree: true, characterData: true };
observer.observe(dom, config);
this.observer = observer;
}
dispatchDOMEvent(event) {
if (event.data) {
htmlevent(this.dom, event.type, event.data.x, event.data.y);
}
}
update() {
this.image = html2canvas(this.dom);
this.needsUpdate = true;
this.scheduleUpdate = null;
}
dispose() {
if (this.observer) {
this.observer.disconnect();
}
this.scheduleUpdate = clearTimeout(this.scheduleUpdate);
super.dispose();
}
}
const canvases = /* @__PURE__ */ new WeakMap();
function html2canvas(element) {
const range = document.createRange();
const color = new Color();
function Clipper(context2) {
const clips = [];
let isClipping = false;
function doClip() {
if (isClipping) {
isClipping = false;
context2.restore();
}
if (clips.length === 0)
return;
let minX = -Infinity, minY = -Infinity;
let maxX = Infinity, maxY = Infinity;
for (let i = 0; i < clips.length; i++) {
const clip = clips[i];
minX = Math.max(minX, clip.x);
minY = Math.max(minY, clip.y);
maxX = Math.min(maxX, clip.x + clip.width);
maxY = Math.min(maxY, clip.y + clip.height);
}
context2.save();
context2.beginPath();
context2.rect(minX, minY, maxX - minX, maxY - minY);
context2.clip();
isClipping = true;
}
return {
add: function(clip) {
clips.push(clip);
doClip();
},
remove: function() {
clips.pop();
doClip();
}
};
}
function drawText(style, x, y, string) {
if (string !== "") {
if (style.textTransform === "uppercase") {
string = string.toUpperCase();
}
context.font = style.fontWeight + " " + style.fontSize + " " + style.fontFamily;
context.textBaseline = "top";
context.fillStyle = style.color;
context.fillText(string, x, y + parseFloat(style.fontSize) * 0.1);
}
}
function buildRectPath(x, y, w, h, r) {
if (w < 2 * r)
r = w / 2;
if (h < 2 * r)
r = h / 2;
context.beginPath();
context.moveTo(x + r, y);
context.arcTo(x + w, y, x + w, y + h, r);
context.arcTo(x + w, y + h, x, y + h, r);
context.arcTo(x, y + h, x, y, r);
context.arcTo(x, y, x + w, y, r);
context.closePath();
}
function drawBorder(style, which, x, y, width, height) {
const borderWidth = style[which + "Width"];
const borderStyle = style[which + "Style"];
const borderColor = style[which + "Color"];
if (borderWidth !== "0px" && borderStyle !== "none" && borderColor !== "transparent" && borderColor !== "rgba(0, 0, 0, 0)") {
context.strokeStyle = borderColor;
context.lineWidth = parseFloat(borderWidth);
context.beginPath();
context.moveTo(x, y);
context.lineTo(x + width, y + height);
context.stroke();
}
}
function drawElement(element2, style) {
let x = 0, y = 0, width = 0, height = 0;
if (element2.nodeType === Node.TEXT_NODE) {
range.selectNode(element2);
const rect = range.getBoundingClientRect();
x = rect.left - offset.left - 0.5;
y = rect.top - offset.top - 0.5;
width = rect.width;
height = rect.height;
drawText(style, x, y, element2.nodeValue.trim());
} else if (element2.nodeType === Node.COMMENT_NODE) {
return;
} else if (element2 instanceof HTMLCanvasElement) {
if (element2.style.display === "none")
return;
context.save();
const dpr = window.devicePixelRatio;
context.scale(1 / dpr, 1 / dpr);
context.drawImage(element2, 0, 0);
context.restore();
} else {
if (element2.style.display === "none")
return;
const rect = element2.getBoundingClientRect();
x = rect.left - offset.left - 0.5;
y = rect.top - offset.top - 0.5;
width = rect.width;
height = rect.height;
style = window.getComputedStyle(element2);
buildRectPath(x, y, width, height, parseFloat(style.borderRadius));
const backgroundColor = style.backgroundColor;
if (backgroundColor !== "transparent" && backgroundColor !== "rgba(0, 0, 0, 0)") {
context.fillStyle = backgroundColor;
context.fill();
}
const borders = ["borderTop", "borderLeft", "borderBottom", "borderRight"];
let match = true;
let prevBorder = null;
for (const border of borders) {
if (prevBorder !== null) {
match = style[border + "Width"] === style[prevBorder + "Width"] && style[border + "Color"] === style[prevBorder + "Color"] && style[border + "Style"] === style[prevBorder + "Style"];
}
if (match === false)
break;
prevBorder = border;
}
if (match === true) {
const width2 = parseFloat(style.borderTopWidth);
if (style.borderTopWidth !== "0px" && style.borderTopStyle !== "none" && style.borderTopColor !== "transparent" && style.borderTopColor !== "rgba(0, 0, 0, 0)") {
context.strokeStyle = style.borderTopColor;
context.lineWidth = width2;
context.stroke();
}
} else {
drawBorder(style, "borderTop", x, y, width, 0);
drawBorder(style, "borderLeft", x, y, 0, height);
drawBorder(style, "borderBottom", x, y + height, width, 0);
drawBorder(style, "borderRight", x + width, y, 0, height);
}
if (element2 instanceof HTMLInputElement) {
let accentColor = style.accentColor;
if (accentColor === void 0 || accentColor === "auto")
accentColor = style.color;
color.set(accentColor);
const luminance = Math.sqrt(0.299 * color.r ** 2 + 0.587 * color.g ** 2 + 0.114 * color.b ** 2);
const accentTextColor = luminance < 0.5 ? "white" : "#111111";
if (element2.type === "radio") {
buildRectPath(x, y, width, height, height);
context.fillStyle = "white";
context.strokeStyle = accentColor;
context.lineWidth = 1;
context.fill();
context.stroke();
if (element2.checked) {
buildRectPath(x + 2, y + 2, width - 4, height - 4, height);
context.fillStyle = accentColor;
context.strokeStyle = accentTextColor;
context.lineWidth = 2;
context.fill();
context.stroke();
}
}
if (element2.type === "checkbox") {
buildRectPath(x, y, width, height, 2);
context.fillStyle = element2.checked ? accentColor : "white";
context.strokeStyle = element2.checked ? accentTextColor : accentColor;
context.lineWidth = 1;
context.stroke();
context.fill();
if (element2.checked) {
const currentTextAlign = context.textAlign;
context.textAlign = "center";
const properties = {
color: accentTextColor,
fontFamily: style.fontFamily,
fontSize: height + "px",
fontWeight: "bold"
};
drawText(properties, x + width / 2, y, "✔");
context.textAlign = currentTextAlign;
}
}
if (element2.type === "range") {
const [min, max, value] = ["min", "max", "value"].map((property) => parseFloat(element2[property]));
const position = (value - min) / (max - min) * (width - height);
buildRectPath(x, y + height / 4, width, height / 2, height / 4);
context.fillStyle = accentTextColor;
context.strokeStyle = accentColor;
context.lineWidth = 1;
context.fill();
context.stroke();
buildRectPath(x, y + height / 4, position + height / 2, height / 2, height / 4);
context.fillStyle = accentColor;
context.fill();
buildRectPath(x + position, y, height, height, height / 2);
context.fillStyle = accentColor;
context.fill();
}
if (element2.type === "color" || element2.type === "text" || element2.type === "number") {
clipper.add({ x, y, width, height });
drawText(style, x + parseInt(style.paddingLeft), y + parseInt(style.paddingTop), element2.value);
clipper.remove();
}
}
}
const isClipping = style.overflow === "auto" || style.overflow === "hidden";
if (isClipping)
clipper.add({ x, y, width, height });
for (let i = 0; i < element2.childNodes.length; i++) {
drawElement(element2.childNodes[i], style);
}
if (isClipping)
clipper.remove();
}
const offset = element.getBoundingClientRect();
let canvas = canvases.get(element);
if (canvas === void 0) {
canvas = document.createElement("canvas");
canvas.width = offset.width;
canvas.height = offset.height;
canvases.set(element, canvas);
}
const context = canvas.getContext(
"2d"
/*, { alpha: false }*/
);
const clipper = new Clipper(context);
drawElement(element);
return canvas;
}
function htmlevent(element, event, x, y) {
const mouseEventInit = {
clientX: x * element.offsetWidth + element.offsetLeft,
clientY: y * element.offsetHeight + element.offsetTop,
view: element.ownerDocument.defaultView
};
window.dispatchEvent(new MouseEvent(event, mouseEventInit));
const rect = element.getBoundingClientRect();
x = x * rect.width + rect.left;
y = y * rect.height + rect.top;
function traverse(element2) {
if (element2.nodeType !== Node.TEXT_NODE && element2.nodeType !== Node.COMMENT_NODE) {
const rect2 = element2.getBoundingClientRect();
if (x > rect2.left && x < rect2.right && y > rect2.top && y < rect2.bottom) {
element2.dispatchEvent(new MouseEvent(event, mouseEventInit));
if (element2 instanceof HTMLInputElement && element2.type === "range" && (event === "mousedown" || event === "click")) {
const [min, max] = ["min", "max"].map((property) => parseFloat(element2[property]));
const width = rect2.width;
const offsetX = x - rect2.x;
const proportion = offsetX / width;
element2.value = min + (max - min) * proportion;
element2.dispatchEvent(new InputEvent("input", { bubbles: true }));
}
}
for (let i = 0; i < element2.childNodes.length; i++) {
traverse(element2.childNodes[i]);
}
}
}
traverse(element);
}
export {
HTMLMesh
};
//# sourceMappingURL=HTMLMesh.js.map