examples: fix duplication (#2813)

.github/workflows/ci.yml

@@ -101,22 +101,26 @@ jobs:
           - os: macos-latest
             name: OSX Safari Stable
             targetBrowser: Safari_Stable
-          - os: macos-latest
+          - os: macos-10.15
             name: iOS Simulator Safari 12
             targetBrowser: Safari_IOS_12
             xcode: /Applications/Xcode_10.3.app
-          - os: macos-latest
+          - os: macos-10.15
             name: iOS Simulator Safari 13
             targetBrowser: Safari_IOS_13
-            xcode: /Applications/Xcode_11.6_beta.app
+            xcode: /Applications/Xcode_11.7.app
-          - os: macos-latest
+          - os: macos-10.15
             name: iOS Simulator Safari 14
             targetBrowser: Safari_IOS_14
-            xcode: /Applications/Xcode_12_beta.app
+            xcode: /Applications/Xcode_12.4.app
+          - os: macos-11
+            name: iOS Simulator Safari 15.0
+            targetBrowser: Safari_IOS_15_0
+            xcode: /Applications/Xcode_13.0.app
           - os: macos-11
             name: iOS Simulator Safari 15
             targetBrowser: Safari_IOS_15
-            xcode: /Applications/Xcode_13.0.app
+            xcode: /Applications/Xcode_13.2.app
           - os: windows-latest
             name: Windows Internet Explorer 9 (Emulated)
             targetBrowser: IE_9

CHANGELOG.md

@@ -2,6 +2,136 @@
 
 All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
 
+## [1.4.1](https://github.com/niklasvh/html2canvas/compare/v1.4.0...v1.4.1) (2022-01-22)
+
+
+### deps
+
+* fix source maps (#2812) ([67c5e8d](https://github.com/niklasvh/html2canvas/commit/67c5e8dec4b2af9260a2b5b75b3399495fd1fee9)), closes [#2812](https://github.com/niklasvh/html2canvas/issues/2812)
+
+### feat
+
+* add support for `<video>` elements (#2788) ([181d1b1](https://github.com/niklasvh/html2canvas/commit/181d1b1103910d6e1b5277d5c007fc5e3006c6bf)), closes [#2788](https://github.com/niklasvh/html2canvas/issues/2788)
+
+### fix
+
+* Properties x and y of BoundingRect is undefined in old browser (#2797) ([e587a82](https://github.com/niklasvh/html2canvas/commit/e587a82dca01d9ada78cae34fd1bdb934e547f9b)), closes [#2797](https://github.com/niklasvh/html2canvas/issues/2797)
+* source maps (#2787) ([46db867](https://github.com/niklasvh/html2canvas/commit/46db86755f064828559a4b0b37310f3ae94f5494)), closes [#2787](https://github.com/niklasvh/html2canvas/issues/2787)
+
+
+
+# [1.4.0](https://github.com/niklasvh/html2canvas/compare/v1.3.4...v1.4.0) (2022-01-01)
+
+
+### feat
+
+* use native text segmenter where available (#2782) ([6521a48](https://github.com/niklasvh/html2canvas/commit/6521a487d78172f7179f7c973c1a3af40eb92009)), closes [#2782](https://github.com/niklasvh/html2canvas/issues/2782)
+
+### fix
+
+* adopted stylesheets (#2785) ([74696fa](https://github.com/niklasvh/html2canvas/commit/74696faf47c07b48b9c9587db0b999da1c08a8be)), closes [#2785](https://github.com/niklasvh/html2canvas/issues/2785)
+* ios text wrapping with 0 width rect (#2786) ([0476d06](https://github.com/niklasvh/html2canvas/commit/0476d065158c33d2020a9f602b3043e5e2f90c75)), closes [#2786](https://github.com/niklasvh/html2canvas/issues/2786)
+* reduce SLICE_STACK_SIZE to 50k (#2784) ([1cc853a](https://github.com/niklasvh/html2canvas/commit/1cc853a3186853eaca00af060f651697dc3497a9)), closes [#2784](https://github.com/niklasvh/html2canvas/issues/2784)
+
+
+
+## [1.3.4](https://github.com/niklasvh/html2canvas/compare/v1.3.3...v1.3.4) (2021-12-29)
+
+
+### ci
+
+* add ios 15.0 testing (#2780) ([d922207](https://github.com/niklasvh/html2canvas/commit/d9222075daaed08884491b0563fc899ee0ced731)), closes [#2780](https://github.com/niklasvh/html2canvas/issues/2780)
+
+### fix
+
+* ios 15 font rendering crash (#2645) ([ba2b1cd](https://github.com/niklasvh/html2canvas/commit/ba2b1cd8e9a9d7932675d7abffce1526a609e769)), closes [#2645](https://github.com/niklasvh/html2canvas/issues/2645)
+
+
+
+## [1.3.3](https://github.com/niklasvh/html2canvas/compare/v1.3.2...v1.3.3) (2021-11-23)
+
+
+### ci
+
+* fix macos action runners (#2757) ([ed57781](https://github.com/niklasvh/html2canvas/commit/ed577815949b6a565df54f2101cf6f0fb731c290)), closes [#2757](https://github.com/niklasvh/html2canvas/issues/2757)
+
+### fix
+
+* "offsets" text when font is big ([fd22a01](https://github.com/niklasvh/html2canvas/commit/fd22a01a3c9e39293f47caaed0c0e13d2dc8170c))
+* const enums (#2651) ([eeda86b](https://github.com/niklasvh/html2canvas/commit/eeda86bd5e81fb4e97675fe9bee3d4d15899997f)), closes [#2651](https://github.com/niklasvh/html2canvas/issues/2651)
+
+
+
+## [1.3.2](https://github.com/niklasvh/html2canvas/compare/v1.3.1...v1.3.2) (2021-08-15)
+
+
+### docs
+
+* add warning for webgl cloning with preserveDrawingBuffer=false (#2661) ([01ed879](https://github.com/niklasvh/html2canvas/commit/01ed87907ad9c7688880e2c5cb8ebc22ef73a4d8)), closes [#2661](https://github.com/niklasvh/html2canvas/issues/2661)
+* include src files on www (#2660) ([58ff000](https://github.com/niklasvh/html2canvas/commit/58ff0003f77d825ac027eeec95fa80c0123eaf8f)), closes [#2660](https://github.com/niklasvh/html2canvas/issues/2660)
+
+### feat
+
+* add support for data-html2canvas-debug property for debugging (#2658) ([cd0d725](https://github.com/niklasvh/html2canvas/commit/cd0d7258c3a93f2989d5d9ec0244ba2763ea2d23)), closes [#2658](https://github.com/niklasvh/html2canvas/issues/2658)
+
+### fix
+
+* disable transition properties (#2659) ([f143166](https://github.com/niklasvh/html2canvas/commit/f1431665513e0a4636fb167a241f4a0571ba728a)), closes [#2659](https://github.com/niklasvh/html2canvas/issues/2659)
+* overflows with absolutely positioned content (#2663) ([38c6829](https://github.com/niklasvh/html2canvas/commit/38c682955a9299ca7785af71d8f251df799405b0)), closes [#2663](https://github.com/niklasvh/html2canvas/issues/2663)
+
+
+
+## [1.3.1](https://github.com/niklasvh/html2canvas/compare/v1.3.0...v1.3.1) (2021-08-14)
+
+
+### fix
+
+* multi arg transition/animation duration (#2657) ([1b55ed5](https://github.com/niklasvh/html2canvas/commit/1b55ed5668dcbbe1c6d8d7e94736d8f2da2d31c5)), closes [#2657](https://github.com/niklasvh/html2canvas/issues/2657)
+
+
+
+# [1.3.0](https://github.com/niklasvh/html2canvas/compare/v1.2.2...v1.3.0) (2021-08-13)
+
+
+### feat
+
+* add rtl render support (#2653) ([6947982](https://github.com/niklasvh/html2canvas/commit/694798284838b16882e648914da0905818aa366c)), closes [#2653](https://github.com/niklasvh/html2canvas/issues/2653)
+* correctly break graphemes (#2652) ([437b367](https://github.com/niklasvh/html2canvas/commit/437b367d3ba9dfd7f9a4c8042ac8d00208c09770)), closes [#2652](https://github.com/niklasvh/html2canvas/issues/2652)
+
+### fix
+
+* correctly handle allowTaint canvas cloning (#2649) ([c378e22](https://github.com/niklasvh/html2canvas/commit/c378e220694c14cb7b3b4b8650a7757f8fc23c7a)), closes [#2649](https://github.com/niklasvh/html2canvas/issues/2649)
+* finish animation/transitions for elements (#2632) ([969638f](https://github.com/niklasvh/html2canvas/commit/969638fb94a0a14c64a667fa6e5689f79d9f1044)), closes [#2632](https://github.com/niklasvh/html2canvas/issues/2632)
+
+### test
+
+* add letter-spacing test for zwj emoji (#2650) ([f919204](https://github.com/niklasvh/html2canvas/commit/f919204efa06af219f155ca279f96124bb92862b)), closes [#2650](https://github.com/niklasvh/html2canvas/issues/2650)
+
+
+
+## [1.2.2](https://github.com/niklasvh/html2canvas/compare/v1.2.1...v1.2.2) (2021-08-10)
+
+
+### ci
+
+* add ios15 target (#2564) ([e429e04](https://github.com/niklasvh/html2canvas/commit/e429e0443adf5c7ca3041b97a8157b8911302206)), closes [#2564](https://github.com/niklasvh/html2canvas/issues/2564)
+
+### docs
+
+* update test previewer (#2637) ([7a06d0c](https://github.com/niklasvh/html2canvas/commit/7a06d0c2c2f3b8a1d1a8a85c540f8288b782e8c6)), closes [#2637](https://github.com/niklasvh/html2canvas/issues/2637)
+
+### fix
+
+* parsing counter content in pseudo element (#2640) ([1941b9e](https://github.com/niklasvh/html2canvas/commit/1941b9e0acfd9243da0beaf70e1643cab1b4a963)), closes [#2640](https://github.com/niklasvh/html2canvas/issues/2640)
+* radial gradient ry check (#2631) ([a0dd38a](https://github.com/niklasvh/html2canvas/commit/a0dd38a8be4e540ae1c1f4b4e41f6c386f3e454f)), closes [#2631](https://github.com/niklasvh/html2canvas/issues/2631)
+* test for ios range line break error (#2635) ([f43f942](https://github.com/niklasvh/html2canvas/commit/f43f942fcd793dde9cdc6c0438f379ec3c05c405)), closes [#2635](https://github.com/niklasvh/html2canvas/issues/2635)
+
+### test
+
+* large base64 encoded background (#2636) ([e36408a](https://github.com/niklasvh/html2canvas/commit/e36408ad030fe31acd9969a37fe24c1621c0bd04)), closes [#2636](https://github.com/niklasvh/html2canvas/issues/2636)
+
+
+
 ## [1.2.1](https://github.com/niklasvh/html2canvas/compare/v1.2.0...v1.2.1) (2021-08-05)
 
 
@@ -141,9 +271,14 @@ All notable changes to this project will be documented in this file. See [standa
 
 * update www deps (#2525) ([2a013e2](https://github.com/niklasvh/html2canvas/commit/2a013e20c814b7dbaea98f54f0bde8f553eb79a2)), closes [#2525](https://github.com/niklasvh/html2canvas/issues/2525)
 
+### feat
+
+* add support for border-style dashed, dotted, double (#2531) ([72cd528](https://github.com/niklasvh/html2canvas/commit/72cd5284296e4cdb3fe88f2982ec7528604b6618))
+
 ### fix
 
 * opacity with overflow hidden (#2450) ([82b7da5](https://github.com/niklasvh/html2canvas/commit/82b7da558c342e7f53d298bb1d843a5db86c3b21)), closes [#2450](https://github.com/niklasvh/html2canvas/issues/2450)
+* top right border radius (#2522) ([ba17267](https://github.com/niklasvh/html2canvas/commit/ba172678f07f962e9f54b398df087e86217d7a13))
 
 ### test
 

examples/existing_canvas.html

@@ -29,8 +29,6 @@
     var canvas = document.querySelector("canvas");
     var ctx = canvas.getContext("2d");
 
-    var ctx = canvas.getContext('2d');
-
     ctx.beginPath();
     ctx.arc(75,75,50,0,Math.PI*2,true); // Outer circle
     ctx.moveTo(110,75);

karma.conf.js

@@ -34,19 +34,25 @@ module.exports = function(config) {
             base: 'MobileSafari',
             name: 'iPhone 8',
             platform: 'iOS',
-            sdk: '13.6'
+            sdk: '13.7'
         },
         Safari_IOS_14: {
             base: 'MobileSafari',
             name: 'iPhone 8',
             platform: 'iOS',
-            sdk: '14.0'
+            sdk: '14.4'
+        },
+        Safari_IOS_15_0: {
+            base: 'MobileSafari',
+            name: 'iPhone 13',
+            platform: 'iOS',
+            sdk: '15.0'
         },
         Safari_IOS_15: {
             base: 'MobileSafari',
-            name: 'iPhone 8',
+            name: 'iPhone 13',
             platform: 'iOS',
-            sdk: '15.0'
+            sdk: '15.2'
         },
         SauceLabs_IE9: {
             base: 'SauceLabs',

package.json

@@ -6,7 +6,7 @@
   "module": "dist/html2canvas.esm.js",
   "typings": "dist/types/index.d.ts",
   "browser": "dist/html2canvas.js",
-  "version": "1.2.1",
+  "version": "1.4.1",
   "author": {
     "name": "Niklas von Hertzen",
     "email": "niklasvh@gmail.com",
@@ -48,7 +48,7 @@
     "babel-loader": "^8.0.5",
     "babel-plugin-add-module-exports": "^1.0.2",
     "babel-plugin-dev-expression": "^0.2.1",
-    "base64-arraybuffer": "0.2.0",
+    "base64-arraybuffer": "1.0.1",
     "body-parser": "^1.19.0",
     "chai": "4.1.1",
     "chromeless": "^1.5.2",
@@ -118,6 +118,7 @@
   "homepage": "https://html2canvas.hertzen.com",
   "license": "MIT",
   "dependencies": {
-    "css-line-break": "2.0.1"
+    "css-line-break": "^2.1.0",
+    "text-segmentation": "^1.0.3"
   }
 }

rollup.config.ts

@@ -30,7 +30,7 @@ export default {
         // Allow json resolution
         json(),
         // Compile TypeScript files
-        typescript(),
+        typescript({ sourceMap: true, inlineSources: true }),
         // Allow bundling cjs modules (unlike webpack, rollup doesn't understand cjs)
         commonjs({
             include: 'node_modules/**'

src/core/debugger.ts

@@ -0,0 +1,29 @@
+const elementDebuggerAttribute = 'data-html2canvas-debug';
+export const enum DebuggerType {
+    NONE,
+    ALL,
+    CLONE,
+    PARSE,
+    RENDER
+}
+
+const getElementDebugType = (element: Element): DebuggerType => {
+    const attribute = element.getAttribute(elementDebuggerAttribute);
+    switch (attribute) {
+        case 'all':
+            return DebuggerType.ALL;
+        case 'clone':
+            return DebuggerType.CLONE;
+        case 'parse':
+            return DebuggerType.PARSE;
+        case 'render':
+            return DebuggerType.RENDER;
+        default:
+            return DebuggerType.NONE;
+    }
+};
+
+export const isDebugging = (element: Element, type: Omit<DebuggerType, DebuggerType.NONE>): boolean => {
+    const elementType = getElementDebugType(element);
+    return elementType === DebuggerType.ALL || type === elementType;
+};

src/core/features.ts

@@ -211,5 +211,12 @@ export const FEATURES = {
         const value = 'withCredentials' in new XMLHttpRequest();
         Object.defineProperty(FEATURES, 'SUPPORT_CORS_XHR', {value});
         return value;
+    },
+    get SUPPORT_NATIVE_TEXT_SEGMENTATION(): boolean {
+        'use strict';
+        // eslint-disable-next-line @typescript-eslint/no-explicit-any
+        const value = !!(typeof Intl !== 'undefined' && (Intl as any).Segmenter);
+        Object.defineProperty(FEATURES, 'SUPPORT_NATIVE_TEXT_SEGMENTATION', {value});
+        return value;
     }
 };

src/css/IPropertyDescriptor.ts

@@ -1,8 +1,8 @@
 import {CSSValue} from './syntax/parser';
-import {CSSTypes} from './types/index';
+import {CSSTypes} from './types';
 import {Context} from '../core/context';
 
-export enum PropertyDescriptorParsingType {
+export const enum PropertyDescriptorParsingType {
     VALUE,
     LIST,
     IDENT_VALUE,

src/css/index.ts

@@ -31,6 +31,7 @@ import {
     borderTopWidth
 } from './property-descriptors/border-width';
 import {color} from './property-descriptors/color';
+import {direction} from './property-descriptors/direction';
 import {display, DISPLAY} from './property-descriptors/display';
 import {float, FLOAT} from './property-descriptors/float';
 import {letterSpacing} from './property-descriptors/letter-spacing';
@@ -57,6 +58,7 @@ import {Tokenizer} from './syntax/tokenizer';
 import {Color, color as colorType, isTransparent} from './types/color';
 import {angle} from './types/angle';
 import {image} from './types/image';
+import {time} from './types/time';
 import {opacity} from './property-descriptors/opacity';
 import {textDecorationColor} from './property-descriptors/text-decoration-color';
 import {textDecorationLine} from './property-descriptors/text-decoration-line';
@@ -71,6 +73,7 @@ import {contains} from '../core/bitwise';
 import {content} from './property-descriptors/content';
 import {counterIncrement} from './property-descriptors/counter-increment';
 import {counterReset} from './property-descriptors/counter-reset';
+import {duration} from './property-descriptors/duration';
 import {quotes} from './property-descriptors/quotes';
 import {boxShadow} from './property-descriptors/box-shadow';
 import {paintOrder} from './property-descriptors/paint-order';
@@ -79,6 +82,7 @@ import {webkitTextStrokeWidth} from './property-descriptors/webkit-text-stroke-w
 import {Context} from '../core/context';
 
 export class CSSParsedDeclaration {
+    animationDuration: ReturnType<typeof duration.parse>;
     backgroundClip: ReturnType<typeof backgroundClip.parse>;
     backgroundColor: Color;
     backgroundImage: ReturnType<typeof backgroundImage.parse>;
@@ -104,6 +108,7 @@ export class CSSParsedDeclaration {
     borderLeftWidth: ReturnType<typeof borderLeftWidth.parse>;
     boxShadow: ReturnType<typeof boxShadow.parse>;
     color: Color;
+    direction: ReturnType<typeof direction.parse>;
     display: ReturnType<typeof display.parse>;
     float: ReturnType<typeof float.parse>;
     fontFamily: ReturnType<typeof fontFamily.parse>;
@@ -145,6 +150,7 @@ export class CSSParsedDeclaration {
     zIndex: ReturnType<typeof zIndex.parse>;
 
     constructor(context: Context, declaration: CSSStyleDeclaration) {
+        this.animationDuration = parse(context, duration, declaration.animationDuration);
         this.backgroundClip = parse(context, backgroundClip, declaration.backgroundClip);
         this.backgroundColor = parse(context, backgroundColor, declaration.backgroundColor);
         this.backgroundImage = parse(context, backgroundImage, declaration.backgroundImage);
@@ -170,6 +176,7 @@ export class CSSParsedDeclaration {
         this.borderLeftWidth = parse(context, borderLeftWidth, declaration.borderLeftWidth);
         this.boxShadow = parse(context, boxShadow, declaration.boxShadow);
         this.color = parse(context, color, declaration.color);
+        this.direction = parse(context, direction, declaration.direction);
         this.display = parse(context, display, declaration.display);
         this.float = parse(context, float, declaration.cssFloat);
         this.fontFamily = parse(context, fontFamily, declaration.fontFamily);
@@ -306,6 +313,8 @@ const parse = (context: Context, descriptor: CSSPropertyDescriptor<any>, style?:
                 case 'length-percentage':
                     const value = parser.parseComponentValue();
                     return isLengthPercentage(value) ? value : ZERO_LENGTH;
+                case 'time':
+                    return time.parse(context, parser.parseComponentValue());
             }
             break;
     }

src/css/layout/bounds.ts

@@ -17,11 +17,11 @@ export class Bounds {
     }
 
     static fromDOMRectList(context: Context, domRectList: DOMRectList): Bounds {
-        const domRect = domRectList[0];
+        const domRect = Array.from(domRectList).find((rect) => rect.width !== 0);
         return domRect
             ? new Bounds(
-                  domRect.x + context.windowBounds.left,
+                  domRect.left + context.windowBounds.left,
-                  domRect.y + context.windowBounds.top,
+                  domRect.top + context.windowBounds.top,
                   domRect.width,
                   domRect.height
               )

src/css/layout/text.ts

@@ -1,6 +1,7 @@
 import {OVERFLOW_WRAP} from '../property-descriptors/overflow-wrap';
 import {CSSParsedDeclaration} from '../index';
 import {fromCodePoint, LineBreaker, toCodePoints} from 'css-line-break';
+import {splitGraphemes} from 'text-segmentation';
 import {Bounds, parseBounds} from './bounds';
 import {FEATURES} from '../../core/features';
 import {Context} from '../../core/context';
@@ -27,15 +28,24 @@ export const parseTextBounds = (
     textList.forEach((text) => {
         if (styles.textDecorationLine.length || text.trim().length > 0) {
             if (FEATURES.SUPPORT_RANGE_BOUNDS) {
-                if (!FEATURES.SUPPORT_WORD_BREAKING) {
+                const clientRects = createRange(node, offset, text.length).getClientRects();
-                    textBounds.push(
+                if (clientRects.length > 1) {
-                        new TextBounds(
+                    const subSegments = segmentGraphemes(text);
-                            text,
+                    let subOffset = 0;
-                            Bounds.fromDOMRectList(context, createRange(node, offset, text.length).getClientRects())
+                    subSegments.forEach((subSegment) => {
-                        )
+                        textBounds.push(
-                    );
+                            new TextBounds(
+                                subSegment,
+                                Bounds.fromDOMRectList(
+                                    context,
+                                    createRange(node, subOffset + offset, subSegment.length).getClientRects()
+                                )
+                            )
+                        );
+                        subOffset += subSegment.length;
+                    });
                 } else {
-                    textBounds.push(new TextBounds(text, getRangeBounds(context, node, offset, text.length)));
+                    textBounds.push(new TextBounds(text, Bounds.fromDOMRectList(context, clientRects)));
                 }
             } else {
                 const replacementNode = node.splitText(text.length);
@@ -81,12 +91,32 @@ const createRange = (node: Text, offset: number, length: number): Range => {
     return range;
 };
 
-const getRangeBounds = (context: Context, node: Text, offset: number, length: number): Bounds => {
+export const segmentGraphemes = (value: string): string[] => {
-    return Bounds.fromClientRect(context, createRange(node, offset, length).getBoundingClientRect());
+    if (FEATURES.SUPPORT_NATIVE_TEXT_SEGMENTATION) {
+        // eslint-disable-next-line @typescript-eslint/no-explicit-any
+        const segmenter = new (Intl as any).Segmenter(void 0, {granularity: 'grapheme'});
+        // eslint-disable-next-line @typescript-eslint/no-explicit-any
+        return Array.from(segmenter.segment(value)).map((segment: any) => segment.segment);
+    }
+
+    return splitGraphemes(value);
+};
+
+const segmentWords = (value: string, styles: CSSParsedDeclaration): string[] => {
+    if (FEATURES.SUPPORT_NATIVE_TEXT_SEGMENTATION) {
+        // eslint-disable-next-line @typescript-eslint/no-explicit-any
+        const segmenter = new (Intl as any).Segmenter(void 0, {
+            granularity: 'word'
+        });
+        // eslint-disable-next-line @typescript-eslint/no-explicit-any
+        return Array.from(segmenter.segment(value)).map((segment: any) => segment.segment);
+    }
+
+    return breakWords(value, styles);
 };
 
 const breakText = (value: string, styles: CSSParsedDeclaration): string[] => {
-    return styles.letterSpacing !== 0 ? toCodePoints(value).map((i) => fromCodePoint(i)) : breakWords(value, styles);
+    return styles.letterSpacing !== 0 ? segmentGraphemes(value) : segmentWords(value, styles);
 };
 
 // https://drafts.csswg.org/css-text/#word-separator

src/css/property-descriptors/background-clip.ts

@@ -1,7 +1,7 @@
 import {IPropertyListDescriptor, PropertyDescriptorParsingType} from '../IPropertyDescriptor';
 import {CSSValue, isIdentToken} from '../syntax/parser';
 import {Context} from '../../core/context';
-export enum BACKGROUND_CLIP {
+export const enum BACKGROUND_CLIP {
     BORDER_BOX = 0,
     PADDING_BOX = 1,
     CONTENT_BOX = 2

src/css/property-descriptors/background-repeat.ts

@@ -3,7 +3,7 @@ import {CSSValue, isIdentToken, parseFunctionArgs} from '../syntax/parser';
 import {Context} from '../../core/context';
 export type BackgroundRepeat = BACKGROUND_REPEAT[];
 
-export enum BACKGROUND_REPEAT {
+export const enum BACKGROUND_REPEAT {
     REPEAT = 0,
     NO_REPEAT = 1,
     REPEAT_X = 2,

src/css/property-descriptors/border-style.ts

@@ -1,6 +1,6 @@
 import {IPropertyIdentValueDescriptor, PropertyDescriptorParsingType} from '../IPropertyDescriptor';
 import {Context} from '../../core/context';
-export enum BORDER_STYLE {
+export const enum BORDER_STYLE {
     NONE = 0,
     SOLID = 1,
     DASHED = 2,

src/css/property-descriptors/direction.ts

@@ -0,0 +1,23 @@
+import {IPropertyIdentValueDescriptor, PropertyDescriptorParsingType} from '../IPropertyDescriptor';
+import {Context} from '../../core/context';
+
+export const enum DIRECTION {
+    LTR = 0,
+    RTL = 1
+}
+
+export const direction: IPropertyIdentValueDescriptor<DIRECTION> = {
+    name: 'direction',
+    initialValue: 'ltr',
+    prefix: false,
+    type: PropertyDescriptorParsingType.IDENT_VALUE,
+    parse: (_context: Context, direction: string) => {
+        switch (direction) {
+            case 'rtl':
+                return DIRECTION.RTL;
+            case 'ltr':
+            default:
+                return DIRECTION.LTR;
+        }
+    }
+};

src/css/property-descriptors/duration.ts

@@ -0,0 +1,14 @@
+import {IPropertyListDescriptor, PropertyDescriptorParsingType} from '../IPropertyDescriptor';
+import {Context} from '../../core/context';
+import {CSSValue, isDimensionToken} from '../syntax/parser';
+import {time} from '../types/time';
+
+export const duration: IPropertyListDescriptor<number[]> = {
+    name: 'duration',
+    initialValue: '0s',
+    prefix: false,
+    type: PropertyDescriptorParsingType.LIST,
+    parse: (context: Context, tokens: CSSValue[]) => {
+        return tokens.filter(isDimensionToken).map((token) => time.parse(context, token));
+    }
+};

src/css/property-descriptors/float.ts

@@ -1,6 +1,6 @@
 import {IPropertyIdentValueDescriptor, PropertyDescriptorParsingType} from '../IPropertyDescriptor';
 import {Context} from '../../core/context';
-export enum FLOAT {
+export const enum FLOAT {
     NONE = 0,
     LEFT = 1,
     RIGHT = 2,

src/css/property-descriptors/font-style.ts

@@ -1,6 +1,6 @@
 import {IPropertyIdentValueDescriptor, PropertyDescriptorParsingType} from '../IPropertyDescriptor';
 import {Context} from '../../core/context';
-export enum FONT_STYLE {
+export const enum FONT_STYLE {
     NORMAL = 'normal',
     ITALIC = 'italic',
     OBLIQUE = 'oblique'

src/css/property-descriptors/list-style-position.ts

@@ -1,6 +1,6 @@
 import {IPropertyIdentValueDescriptor, PropertyDescriptorParsingType} from '../IPropertyDescriptor';
 import {Context} from '../../core/context';
-export enum LIST_STYLE_POSITION {
+export const enum LIST_STYLE_POSITION {
     INSIDE = 0,
     OUTSIDE = 1
 }

src/css/property-descriptors/list-style-type.ts

@@ -1,6 +1,6 @@
 import {IPropertyIdentValueDescriptor, PropertyDescriptorParsingType} from '../IPropertyDescriptor';
 import {Context} from '../../core/context';
-export enum LIST_STYLE_TYPE {
+export const enum LIST_STYLE_TYPE {
     NONE = -1,
     DISC = 0,
     CIRCLE = 1,

src/css/property-descriptors/overflow-wrap.ts

@@ -1,6 +1,6 @@
 import {IPropertyIdentValueDescriptor, PropertyDescriptorParsingType} from '../IPropertyDescriptor';
 import {Context} from '../../core/context';
-export enum OVERFLOW_WRAP {
+export const enum OVERFLOW_WRAP {
     NORMAL = 'normal',
     BREAK_WORD = 'break-word'
 }

src/css/property-descriptors/overflow.ts

@@ -1,11 +1,12 @@
 import {IPropertyListDescriptor, PropertyDescriptorParsingType} from '../IPropertyDescriptor';
 import {CSSValue, isIdentToken} from '../syntax/parser';
 import {Context} from '../../core/context';
-export enum OVERFLOW {
+export const enum OVERFLOW {
     VISIBLE = 0,
     HIDDEN = 1,
     SCROLL = 2,
-    AUTO = 3
+    CLIP = 3,
+    AUTO = 4
 }
 
 export const overflow: IPropertyListDescriptor<OVERFLOW[]> = {
@@ -20,6 +21,8 @@ export const overflow: IPropertyListDescriptor<OVERFLOW[]> = {
                     return OVERFLOW.HIDDEN;
                 case 'scroll':
                     return OVERFLOW.SCROLL;
+                case 'clip':
+                    return OVERFLOW.CLIP;
                 case 'auto':
                     return OVERFLOW.AUTO;
                 case 'visible':

src/css/property-descriptors/paint-order.ts

@@ -1,7 +1,7 @@
 import {IPropertyListDescriptor, PropertyDescriptorParsingType} from '../IPropertyDescriptor';
 import {CSSValue, isIdentToken} from '../syntax/parser';
 import {Context} from '../../core/context';
-export enum PAINT_ORDER_LAYER {
+export const enum PAINT_ORDER_LAYER {
     FILL,
     STROKE,
     MARKERS

src/css/property-descriptors/position.ts

@@ -1,6 +1,6 @@
 import {IPropertyIdentValueDescriptor, PropertyDescriptorParsingType} from '../IPropertyDescriptor';
 import {Context} from '../../core/context';
-export enum POSITION {
+export const enum POSITION {
     STATIC = 0,
     RELATIVE = 1,
     ABSOLUTE = 2,

src/css/property-descriptors/text-align.ts

@@ -1,6 +1,6 @@
 import {IPropertyIdentValueDescriptor, PropertyDescriptorParsingType} from '../IPropertyDescriptor';
 import {Context} from '../../core/context';
-export enum TEXT_ALIGN {
+export const enum TEXT_ALIGN {
     LEFT = 0,
     CENTER = 1,
     RIGHT = 2

src/css/property-descriptors/text-transform.ts

@@ -1,6 +1,6 @@
 import {IPropertyIdentValueDescriptor, PropertyDescriptorParsingType} from '../IPropertyDescriptor';
 import {Context} from '../../core/context';
-export enum TEXT_TRANSFORM {
+export const enum TEXT_TRANSFORM {
     NONE = 0,
     LOWERCASE = 1,
     UPPERCASE = 2,

src/css/property-descriptors/visibility.ts

@@ -1,6 +1,6 @@
 import {IPropertyIdentValueDescriptor, PropertyDescriptorParsingType} from '../IPropertyDescriptor';
 import {Context} from '../../core/context';
-export enum VISIBILITY {
+export const enum VISIBILITY {
     VISIBLE = 0,
     HIDDEN = 1,
     COLLAPSE = 2

src/css/syntax/tokenizer.ts

@@ -2,7 +2,7 @@
 
 import {fromCodePoint, toCodePoints} from 'css-line-break';
 
-export enum TokenType {
+export const enum TokenType {
     STRING_TOKEN,
     BAD_STRING_TOKEN,
     LEFT_PARENTHESIS_TOKEN,
@@ -657,7 +657,7 @@ export class Tokenizer {
     }
 
     private consumeStringSlice(count: number): string {
-        const SLICE_STACK_SIZE = 60000;
+        const SLICE_STACK_SIZE = 50000;
         let value = '';
         while (count > 0) {
             const amount = Math.min(SLICE_STACK_SIZE, count);

src/css/types/functions/counter.ts

@@ -4,10 +4,7 @@ import {contains} from '../../../core/bitwise';
 import {CSSParsedCounterDeclaration} from '../../index';
 
 export class CounterState {
-    readonly counters: {[key: string]: number[]};
+    private readonly counters: {[key: string]: number[]} = {};
-    constructor() {
-        this.counters = {};
-    }
 
     getCounterValue(name: string): number {
         const counter = this.counters[name];
@@ -18,7 +15,7 @@ export class CounterState {
         return 1;
     }
 
-    getCounterValues(name: string): number[] {
+    getCounterValues(name: string): readonly number[] {
         const counter = this.counters[name];
         return counter ? counter : [];
     }
@@ -37,6 +34,9 @@ export class CounterState {
                 const counter = this.counters[entry.counter];
                 if (counter && entry.increment !== 0) {
                     canReset = false;
+                    if (!counter.length) {
+                        counter.push(1);
+                    }
                     counter[Math.max(0, counter.length - 1)] += entry.increment;
                 }
             });

src/css/types/image.ts

@@ -10,7 +10,7 @@ import {radialGradient} from './functions/radial-gradient';
 import {prefixRadialGradient} from './functions/-prefix-radial-gradient';
 import {Context} from '../../core/context';
 
-export enum CSSImageType {
+export const enum CSSImageType {
     URL,
     LINEAR_GRADIENT,
     RADIAL_GRADIENT
@@ -56,12 +56,12 @@ export interface CSSLinearGradientImage extends ICSSGradientImage {
     type: CSSImageType.LINEAR_GRADIENT;
 }
 
-export enum CSSRadialShape {
+export const enum CSSRadialShape {
     CIRCLE,
     ELLIPSE
 }
 
-export enum CSSRadialExtent {
+export const enum CSSRadialExtent {
     CLOSEST_SIDE,
     FARTHEST_SIDE,
     CLOSEST_CORNER,

src/css/types/index.ts

@@ -1 +1 @@
-export type CSSTypes = 'angle' | 'color' | 'image' | 'length' | 'length-percentage';
+export type CSSTypes = 'angle' | 'color' | 'image' | 'length' | 'length-percentage' | 'time';

src/css/types/time.ts

@@ -0,0 +1,20 @@
+import {CSSValue} from '../syntax/parser';
+import {TokenType} from '../syntax/tokenizer';
+import {ITypeDescriptor} from '../ITypeDescriptor';
+import {Context} from '../../core/context';
+
+export const time: ITypeDescriptor<number> = {
+    name: 'time',
+    parse: (_context: Context, value: CSSValue): number => {
+        if (value.type === TokenType.DIMENSION_TOKEN) {
+            switch (value.unit.toLowerCase()) {
+                case 's':
+                    return 1000 * value.number;
+                case 'ms':
+                    return value.number;
+            }
+        }
+
+        throw new Error(`Unsupported time type`);
+    }
+};

src/dom/document-cloner.ts

@@ -2,16 +2,19 @@ import {Bounds} from '../css/layout/bounds';
 import {
     isBodyElement,
     isCanvasElement,
+    isCustomElement,
     isElementNode,
     isHTMLElementNode,
     isIFrameElement,
     isImageElement,
     isScriptElement,
     isSelectElement,
+    isSlotElement,
     isStyleElement,
     isSVGElementNode,
     isTextareaElement,
-    isTextNode
+    isTextNode,
+    isVideoElement
 } from './node-parser';
 import {isIdentToken, nonFunctionArgSeparator} from '../css/syntax/parser';
 import {TokenType} from '../css/syntax/tokenizer';
@@ -20,10 +23,12 @@ import {LIST_STYLE_TYPE, listStyleType} from '../css/property-descriptors/list-s
 import {CSSParsedCounterDeclaration, CSSParsedPseudoDeclaration} from '../css/index';
 import {getQuote} from '../css/property-descriptors/quotes';
 import {Context} from '../core/context';
+import {DebuggerType, isDebugging} from '../core/debugger';
 
 export interface CloneOptions {
     ignoreElements?: (element: Element) => boolean;
     onclone?: (document: Document, element: HTMLElement) => void;
+    allowTaint?: boolean;
 }
 
 export interface WindowOptions {
@@ -61,7 +66,7 @@ export class DocumentCloner {
             throw new Error('Cloned element does not have an owner document');
         }
 
-        this.documentElement = this.cloneNode(element.ownerDocument.documentElement) as HTMLElement;
+        this.documentElement = this.cloneNode(element.ownerDocument.documentElement, false) as HTMLElement;
     }
 
     toIFrame(ownerDocument: Document, windowSize: Bounds): Promise<HTMLIFrameElement> {
@@ -135,10 +140,15 @@ export class DocumentCloner {
     }
 
     createElementClone<T extends HTMLElement | SVGElement>(node: T): HTMLElement | SVGElement {
+        if (isDebugging(node, DebuggerType.CLONE)) {
+            debugger;
+        }
         if (isCanvasElement(node)) {
             return this.createCanvasClone(node);
         }
-
+        if (isVideoElement(node)) {
+            return this.createVideoClone(node);
+        }
         if (isStyleElement(node)) {
             return this.createStyleClone(node);
         }
@@ -155,6 +165,17 @@ export class DocumentCloner {
             }
         }
 
+        if (isCustomElement(clone)) {
+            return this.createCustomElementClone(clone);
+        }
+
+        return clone;
+    }
+
+    createCustomElementClone(node: HTMLElement): HTMLElement {
+        const clone = document.createElement('html2canvascustomelement');
+        copyCSSStyles(node.style, clone);
+
         return clone;
     }
 
@@ -189,7 +210,7 @@ export class DocumentCloner {
                 img.src = canvas.toDataURL();
                 return img;
             } catch (e) {
-                this.context.logger.info(`Unable to clone canvas contents, canvas is tainted`);
+                this.context.logger.info(`Unable to inline canvas contents, canvas is tainted`, canvas);
             }
         }
 
@@ -201,19 +222,88 @@ export class DocumentCloner {
             const ctx = canvas.getContext('2d');
             const clonedCtx = clonedCanvas.getContext('2d');
             if (clonedCtx) {
-                if (ctx) {
+                if (!this.options.allowTaint && ctx) {
                     clonedCtx.putImageData(ctx.getImageData(0, 0, canvas.width, canvas.height), 0, 0);
                 } else {
+                    const gl = canvas.getContext('webgl2') ?? canvas.getContext('webgl');
+                    if (gl) {
+                        const attribs = gl.getContextAttributes();
+                        if (attribs?.preserveDrawingBuffer === false) {
+                            this.context.logger.warn(
+                                'Unable to clone WebGL context as it has preserveDrawingBuffer=false',
+                                canvas
+                            );
+                        }
+                    }
+
                     clonedCtx.drawImage(canvas, 0, 0);
                 }
             }
             return clonedCanvas;
-        } catch (e) {}
+        } catch (e) {
+            this.context.logger.info(`Unable to clone canvas as it is tainted`, canvas);
+        }
 
         return clonedCanvas;
     }
 
-    cloneNode(node: Node): Node {
+    createVideoClone(video: HTMLVideoElement): HTMLCanvasElement {
+        const canvas = video.ownerDocument.createElement('canvas');
+
+        canvas.width = video.offsetWidth;
+        canvas.height = video.offsetHeight;
+        const ctx = canvas.getContext('2d');
+
+        try {
+            if (ctx) {
+                ctx.drawImage(video, 0, 0, canvas.width, canvas.height);
+                if (!this.options.allowTaint) {
+                    ctx.getImageData(0, 0, canvas.width, canvas.height);
+                }
+            }
+            return canvas;
+        } catch (e) {
+            this.context.logger.info(`Unable to clone video as it is tainted`, video);
+        }
+
+        const blankCanvas = video.ownerDocument.createElement('canvas');
+
+        blankCanvas.width = video.offsetWidth;
+        blankCanvas.height = video.offsetHeight;
+        return blankCanvas;
+    }
+
+    appendChildNode(clone: HTMLElement | SVGElement, child: Node, copyStyles: boolean): void {
+        if (
+            !isElementNode(child) ||
+            (!isScriptElement(child) &&
+                !child.hasAttribute(IGNORE_ATTRIBUTE) &&
+                (typeof this.options.ignoreElements !== 'function' || !this.options.ignoreElements(child)))
+        ) {
+            if (!this.options.copyStyles || !isElementNode(child) || !isStyleElement(child)) {
+                clone.appendChild(this.cloneNode(child, copyStyles));
+            }
+        }
+    }
+
+    cloneChildNodes(node: Element, clone: HTMLElement | SVGElement, copyStyles: boolean): void {
+        for (
+            let child = node.shadowRoot ? node.shadowRoot.firstChild : node.firstChild;
+            child;
+            child = child.nextSibling
+        ) {
+            if (isElementNode(child) && isSlotElement(child) && typeof child.assignedNodes === 'function') {
+                const assignedNodes = child.assignedNodes() as ChildNode[];
+                if (assignedNodes.length) {
+                    assignedNodes.forEach((assignedNode) => this.appendChildNode(clone, assignedNode, copyStyles));
+                }
+            } else {
+                this.appendChildNode(clone, child, copyStyles);
+            }
+        }
+    }
+
+    cloneNode(node: Node, copyStyles: boolean): Node {
         if (isTextNode(node)) {
             return document.createTextNode(node.data);
         }
@@ -226,6 +316,7 @@ export class DocumentCloner {
 
         if (window && isElementNode(node) && (isHTMLElementNode(node) || isSVGElementNode(node))) {
             const clone = this.createElementClone(node);
+            clone.style.transitionProperty = 'none';
 
             const style = window.getComputedStyle(node);
             const styleBefore = window.getComputedStyle(node, ':before');
@@ -241,17 +332,12 @@ export class DocumentCloner {
             const counters = this.counters.parse(new CSSParsedCounterDeclaration(this.context, style));
             const before = this.resolvePseudoContent(node, clone, styleBefore, PseudoElementType.BEFORE);
 
-            for (let child = node.firstChild; child; child = child.nextSibling) {
+            if (isCustomElement(node)) {
-                if (
+                copyStyles = true;
-                    !isElementNode(child) ||
+            }
-                    (!isScriptElement(child) &&
+
-                        !child.hasAttribute(IGNORE_ATTRIBUTE) &&
+            if (!isVideoElement(node)) {
-                        (typeof this.options.ignoreElements !== 'function' || !this.options.ignoreElements(child)))
+                this.cloneChildNodes(node, clone, copyStyles);
-                ) {
-                    if (!this.options.copyStyles || !isElementNode(child) || !isStyleElement(child)) {
-                        clone.appendChild(this.cloneNode(child));
-                    }
-                }
             }
 
             if (before) {
@@ -265,7 +351,10 @@ export class DocumentCloner {
 
             this.counters.pop(counters);
 
-            if (style && (this.options.copyStyles || isSVGElementNode(node)) && !isIFrameElement(node)) {
+            if (
+                (style && (this.options.copyStyles || isSVGElementNode(node)) && !isIFrameElement(node)) ||
+                copyStyles
+            ) {
                 copyCSSStyles(style, clone);
             }
 

src/dom/element-container.ts

@@ -3,29 +3,44 @@ import {TextContainer} from './text-container';
 import {Bounds, parseBounds} from '../css/layout/bounds';
 import {isHTMLElementNode} from './node-parser';
 import {Context} from '../core/context';
+import {DebuggerType, isDebugging} from '../core/debugger';
 
 export const enum FLAGS {
     CREATES_STACKING_CONTEXT = 1 << 1,
     CREATES_REAL_STACKING_CONTEXT = 1 << 2,
-    IS_LIST_OWNER = 1 << 3
+    IS_LIST_OWNER = 1 << 3,
+    DEBUG_RENDER = 1 << 4
 }
 
 export class ElementContainer {
     readonly styles: CSSParsedDeclaration;
-    readonly textNodes: TextContainer[];
+    readonly textNodes: TextContainer[] = [];
-    readonly elements: ElementContainer[];
+    readonly elements: ElementContainer[] = [];
     bounds: Bounds;
-    flags: number;
+    flags = 0;
 
     constructor(protected readonly context: Context, element: Element) {
-        this.styles = new CSSParsedDeclaration(context, window.getComputedStyle(element, null));
+        if (isDebugging(element, DebuggerType.PARSE)) {
-        this.textNodes = [];
+            debugger;
-        this.elements = [];
-        if (this.styles.transform !== null && isHTMLElementNode(element)) {
-            // getBoundingClientRect takes transforms into account
-            element.style.transform = 'none';
         }
+
+        this.styles = new CSSParsedDeclaration(context, window.getComputedStyle(element, null));
+
+        if (isHTMLElementNode(element)) {
+            if (this.styles.animationDuration.some((duration) => duration > 0)) {
+                element.style.animationDuration = '0s';
+            }
+
+            if (this.styles.transform !== null) {
+                // getBoundingClientRect takes transforms into account
+                element.style.transform = 'none';
+            }
+        }
+
         this.bounds = parseBounds(this.context, element);
-        this.flags = 0;
+
+        if (isDebugging(element, DebuggerType.RENDER)) {
+            this.flags |= FLAGS.DEBUG_RENDER;
+        }
     }
 }

src/dom/node-parser.ts

@@ -124,6 +124,7 @@ export const isHTMLElement = (node: Element): node is HTMLHtmlElement => node.ta
 export const isSVGElement = (node: Element): node is SVGSVGElement => node.tagName === 'svg';
 export const isBodyElement = (node: Element): node is HTMLBodyElement => node.tagName === 'BODY';
 export const isCanvasElement = (node: Element): node is HTMLCanvasElement => node.tagName === 'CANVAS';
+export const isVideoElement = (node: Element): node is HTMLVideoElement => node.tagName === 'VIDEO';
 export const isImageElement = (node: Element): node is HTMLImageElement => node.tagName === 'IMG';
 export const isIFrameElement = (node: Element): node is HTMLIFrameElement => node.tagName === 'IFRAME';
 export const isStyleElement = (node: Element): node is HTMLStyleElement => node.tagName === 'STYLE';
@@ -131,3 +132,5 @@ export const isScriptElement = (node: Element): node is HTMLScriptElement => nod
 export const isTextareaElement = (node: Element): node is HTMLTextAreaElement => node.tagName === 'TEXTAREA';
 export const isSelectElement = (node: Element): node is HTMLSelectElement => node.tagName === 'SELECT';
 export const isSlotElement = (node: Element): node is HTMLSlotElement => node.tagName === 'SLOT';
+// https://html.spec.whatwg.org/multipage/custom-elements.html#valid-custom-element-name
+export const isCustomElement = (node: Element): node is HTMLElement => node.tagName.indexOf('-') > 0;

src/index.ts

@@ -74,6 +74,7 @@ const renderElement = async (element: HTMLElement, opts: Partial<Options>): Prom
     const foreignObjectRendering = opts.foreignObjectRendering ?? false;
 
     const cloneOptions: CloneConfigurations = {
+        allowTaint: opts.allowTaint ?? false,
         onclone: opts.onclone,
         ignoreElements: opts.ignoreElements,
         inlineImages: foreignObjectRendering,

src/render/canvas/canvas-renderer.ts

@@ -1,8 +1,8 @@
 import {ElementPaint, parseStackingContexts, StackingContext} from '../stacking-context';
 import {asString, Color, isTransparent} from '../../css/types/color';
-import {ElementContainer} from '../../dom/element-container';
+import {ElementContainer, FLAGS} from '../../dom/element-container';
 import {BORDER_STYLE} from '../../css/property-descriptors/border-style';
-import {CSSParsedDeclaration} from '../../css/index';
+import {CSSParsedDeclaration} from '../../css';
 import {TextContainer} from '../../dom/text-container';
 import {Path, transformPath} from '../path';
 import {BACKGROUND_CLIP} from '../../css/property-descriptors/background-clip';
@@ -18,13 +18,12 @@ import {
 } from '../border';
 import {calculateBackgroundRendering, getBackgroundValueForIndex} from '../background';
 import {isDimensionToken} from '../../css/syntax/parser';
-import {TextBounds} from '../../css/layout/text';
+import {segmentGraphemes, TextBounds} from '../../css/layout/text';
-import {fromCodePoint, toCodePoints} from 'css-line-break';
 import {ImageElementContainer} from '../../dom/replaced-elements/image-element-container';
 import {contentBox} from '../box-sizing';
 import {CanvasElementContainer} from '../../dom/replaced-elements/canvas-element-container';
 import {SVGElementContainer} from '../../dom/replaced-elements/svg-element-container';
-import {ReplacedElementContainer} from '../../dom/replaced-elements/index';
+import {ReplacedElementContainer} from '../../dom/replaced-elements';
 import {EffectTarget, IElementEffect, isClipEffect, isOpacityEffect, isTransformEffect} from '../effects';
 import {contains} from '../../core/bitwise';
 import {calculateGradientDirection, calculateRadius, processColorStops} from '../../css/types/functions/gradient';
@@ -44,6 +43,7 @@ import {TextShadow} from '../../css/property-descriptors/text-shadow';
 import {PAINT_ORDER_LAYER} from '../../css/property-descriptors/paint-order';
 import {Renderer} from '../renderer';
 import {Context} from '../../core/context';
+import {DIRECTION} from '../../css/property-descriptors/direction';
 
 export type RenderConfigurations = RenderOptions & {
     backgroundColor: Color | null;
@@ -86,12 +86,12 @@ export class CanvasRenderer extends Renderer {
         );
     }
 
-    applyEffects(effects: IElementEffect[], target: EffectTarget): void {
+    applyEffects(effects: IElementEffect[]): void {
         while (this._activeEffects.length) {
             this.popEffect();
         }
 
-        effects.filter((effect) => contains(effect.target, target)).forEach((effect) => this.applyEffect(effect));
+        effects.forEach((effect) => this.applyEffect(effect));
     }
 
     applyEffect(effect: IElementEffect): void {
@@ -134,6 +134,10 @@ export class CanvasRenderer extends Renderer {
     }
 
     async renderNode(paint: ElementPaint): Promise<void> {
+        if (contains(paint.container.flags, FLAGS.DEBUG_RENDER)) {
+            debugger;
+        }
+
         if (paint.container.styles.isVisible()) {
             await this.renderNodeBackgroundAndBorders(paint);
             await this.renderNodeContent(paint);
@@ -144,7 +148,7 @@ export class CanvasRenderer extends Renderer {
         if (letterSpacing === 0) {
             this.ctx.fillText(text.text, text.bounds.left, text.bounds.top + baseline);
         } else {
-            const letters = toCodePoints(text.text).map((i) => fromCodePoint(i));
+            const letters = segmentGraphemes(text.text);
             letters.reduce((left, letter) => {
                 this.ctx.fillText(letter, left, text.bounds.top + baseline);
 
@@ -157,7 +161,7 @@ export class CanvasRenderer extends Renderer {
         const fontVariant = styles.fontVariant
             .filter((variant) => variant === 'normal' || variant === 'small-caps')
             .join('');
-        const fontFamily = styles.fontFamily.join(', ');
+        const fontFamily = fixIOSSystemFonts(styles.fontFamily).join(', ');
         const fontSize = isDimensionToken(styles.fontSize)
             ? `${styles.fontSize.number}${styles.fontSize.unit}`
             : `${styles.fontSize.number}px`;
@@ -174,6 +178,8 @@ export class CanvasRenderer extends Renderer {
 
         this.ctx.font = font;
 
+        this.ctx.direction = styles.direction === DIRECTION.RTL ? 'rtl' : 'ltr';
+        this.ctx.textAlign = 'left';
         this.ctx.textBaseline = 'alphabetic';
         const {baseline, middle} = this.fontMetrics.getMetrics(fontFamily, fontSize);
         const paintOrder = styles.paintOrder;
@@ -286,7 +292,7 @@ export class CanvasRenderer extends Renderer {
     }
 
     async renderNodeContent(paint: ElementPaint): Promise<void> {
-        this.applyEffects(paint.effects, EffectTarget.CONTENT);
+        this.applyEffects(paint.getEffects(EffectTarget.CONTENT));
         const container = paint.container;
         const curves = paint.curves;
         const styles = container.styles;
@@ -465,6 +471,9 @@ export class CanvasRenderer extends Renderer {
     }
 
     async renderStackContent(stack: StackingContext): Promise<void> {
+        if (contains(stack.element.container.flags, FLAGS.DEBUG_RENDER)) {
+            debugger;
+        }
         // https://www.w3.org/TR/css-position-3/#painting-order
         // 1. the background and borders of the element forming the stacking context.
         await this.renderNodeBackgroundAndBorders(stack.element);
@@ -682,7 +691,7 @@ export class CanvasRenderer extends Renderer {
     }
 
     async renderNodeBackgroundAndBorders(paint: ElementPaint): Promise<void> {
-        this.applyEffects(paint.effects, EffectTarget.BACKGROUND_BORDERS);
+        this.applyEffects(paint.getEffects(EffectTarget.BACKGROUND_BORDERS));
         const styles = paint.container.styles;
         const hasBackground = !isTransparent(styles.backgroundColor) || styles.backgroundImage.length;
 
@@ -896,7 +905,7 @@ export class CanvasRenderer extends Renderer {
         const stack = parseStackingContexts(element);
 
         await this.renderStack(stack);
-        this.applyEffects([], EffectTarget.BACKGROUND_BORDERS);
+        this.applyEffects([]);
         return this.canvas;
     }
 }
@@ -937,3 +946,12 @@ const canvasTextAlign = (textAlign: TEXT_ALIGN): CanvasTextAlign => {
             return 'left';
     }
 };
+
+// see https://github.com/niklasvh/html2canvas/pull/2645
+const iOSBrokenFonts = ['-apple-system', 'system-ui'];
+
+const fixIOSSystemFonts = (fontFamilies: string[]): string[] => {
+    return /iPhone OS 15_(0|1)/.test(window.navigator.userAgent)
+        ? fontFamilies.filter((fontFamily) => iOSBrokenFonts.indexOf(fontFamily) === -1)
+        : fontFamilies;
+};

src/render/effects.ts

@@ -20,36 +20,21 @@ export interface IElementEffect {
 export class TransformEffect implements IElementEffect {
     readonly type: EffectType = EffectType.TRANSFORM;
     readonly target: number = EffectTarget.BACKGROUND_BORDERS | EffectTarget.CONTENT;
-    readonly offsetX: number;
-    readonly offsetY: number;
-    readonly matrix: Matrix;
 
-    constructor(offsetX: number, offsetY: number, matrix: Matrix) {
+    constructor(readonly offsetX: number, readonly offsetY: number, readonly matrix: Matrix) {}
-        this.offsetX = offsetX;
-        this.offsetY = offsetY;
-        this.matrix = matrix;
-    }
 }
 
 export class ClipEffect implements IElementEffect {
     readonly type: EffectType = EffectType.CLIP;
-    readonly target: number;
-    readonly path: Path[];
 
-    constructor(path: Path[], target: EffectTarget) {
+    constructor(readonly path: Path[], readonly target: EffectTarget) {}
-        this.target = target;
-        this.path = path;
-    }
 }
 
 export class OpacityEffect implements IElementEffect {
     readonly type: EffectType = EffectType.OPACITY;
     readonly target: number = EffectTarget.BACKGROUND_BORDERS | EffectTarget.CONTENT;
-    readonly opacity: number;
 
-    constructor(opacity: number) {
+    constructor(readonly opacity: number) {}
-        this.opacity = opacity;
-    }
 }
 
 export const isTransformEffect = (effect: IElementEffect): effect is TransformEffect =>

src/render/font-metrics.ts

@@ -27,6 +27,7 @@ export class FontMetrics {
         container.style.fontSize = fontSize;
         container.style.margin = '0';
         container.style.padding = '0';
+        container.style.whiteSpace = 'nowrap';
 
         body.appendChild(container);
 

src/render/path.ts

@@ -1,6 +1,6 @@
 import {BezierCurve} from './bezier-curve';
 import {Vector} from './vector';
-export enum PathType {
+export const enum PathType {
     VECTOR = 0,
     BEZIER_CURVE = 1
 }

src/render/stacking-context.ts

@@ -1,13 +1,14 @@
 import {ElementContainer, FLAGS} from '../dom/element-container';
 import {contains} from '../core/bitwise';
 import {BoundCurves, calculateBorderBoxPath, calculatePaddingBoxPath} from './bound-curves';
-import {ClipEffect, EffectTarget, IElementEffect, OpacityEffect, TransformEffect} from './effects';
+import {ClipEffect, EffectTarget, IElementEffect, isClipEffect, OpacityEffect, TransformEffect} from './effects';
 import {OVERFLOW} from '../css/property-descriptors/overflow';
 import {equalPath} from './path';
 import {DISPLAY} from '../css/property-descriptors/display';
 import {OLElementContainer} from '../dom/elements/ol-element-container';
 import {LIElementContainer} from '../dom/elements/li-element-container';
 import {createCounterText} from '../css/types/functions/counter';
+import {POSITION} from '../css/property-descriptors/position';
 
 export class StackingContext {
     element: ElementPaint;
@@ -32,27 +33,24 @@ export class StackingContext {
 }
 
 export class ElementPaint {
-    container: ElementContainer;
+    readonly effects: IElementEffect[] = [];
-    effects: IElementEffect[];
+    readonly curves: BoundCurves;
-    curves: BoundCurves;
     listValue?: string;
 
-    constructor(element: ElementContainer, parentStack: IElementEffect[]) {
+    constructor(readonly container: ElementContainer, readonly parent: ElementPaint | null) {
-        this.container = element;
+        this.curves = new BoundCurves(this.container);
-        this.effects = parentStack.slice(0);
+        if (this.container.styles.opacity < 1) {
-        this.curves = new BoundCurves(element);
+            this.effects.push(new OpacityEffect(this.container.styles.opacity));
-        if (element.styles.opacity < 1) {
-            this.effects.push(new OpacityEffect(element.styles.opacity));
         }
 
-        if (element.styles.transform !== null) {
+        if (this.container.styles.transform !== null) {
-            const offsetX = element.bounds.left + element.styles.transformOrigin[0].number;
+            const offsetX = this.container.bounds.left + this.container.styles.transformOrigin[0].number;
-            const offsetY = element.bounds.top + element.styles.transformOrigin[1].number;
+            const offsetY = this.container.bounds.top + this.container.styles.transformOrigin[1].number;
-            const matrix = element.styles.transform;
+            const matrix = this.container.styles.transform;
             this.effects.push(new TransformEffect(offsetX, offsetY, matrix));
         }
 
-        if (element.styles.overflowX !== OVERFLOW.VISIBLE) {
+        if (this.container.styles.overflowX !== OVERFLOW.VISIBLE) {
             const borderBox = calculateBorderBoxPath(this.curves);
             const paddingBox = calculatePaddingBoxPath(this.curves);
 
@@ -65,16 +63,32 @@ export class ElementPaint {
         }
     }
 
-    getParentEffects(): IElementEffect[] {
+    getEffects(target: EffectTarget): IElementEffect[] {
+        let inFlow = [POSITION.ABSOLUTE, POSITION.FIXED].indexOf(this.container.styles.position) === -1;
+        let parent = this.parent;
         const effects = this.effects.slice(0);
-        if (this.container.styles.overflowX !== OVERFLOW.VISIBLE) {
+        while (parent) {
-            const borderBox = calculateBorderBoxPath(this.curves);
+            const croplessEffects = parent.effects.filter((effect) => !isClipEffect(effect));
-            const paddingBox = calculatePaddingBoxPath(this.curves);
+            if (inFlow || parent.container.styles.position !== POSITION.STATIC || !parent.parent) {
-            if (!equalPath(borderBox, paddingBox)) {
+                effects.unshift(...croplessEffects);
-                effects.push(new ClipEffect(paddingBox, EffectTarget.BACKGROUND_BORDERS | EffectTarget.CONTENT));
+                inFlow = [POSITION.ABSOLUTE, POSITION.FIXED].indexOf(parent.container.styles.position) === -1;
+                if (parent.container.styles.overflowX !== OVERFLOW.VISIBLE) {
+                    const borderBox = calculateBorderBoxPath(parent.curves);
+                    const paddingBox = calculatePaddingBoxPath(parent.curves);
+                    if (!equalPath(borderBox, paddingBox)) {
+                        effects.unshift(
+                            new ClipEffect(paddingBox, EffectTarget.BACKGROUND_BORDERS | EffectTarget.CONTENT)
+                        );
+                    }
+                }
+            } else {
+                effects.unshift(...croplessEffects);
             }
+
+            parent = parent.parent;
         }
-        return effects;
+
+        return effects.filter((effect) => contains(effect.target, target));
     }
 }
 
@@ -87,7 +101,7 @@ const parseStackTree = (
     parent.container.elements.forEach((child) => {
         const treatAsRealStackingContext = contains(child.flags, FLAGS.CREATES_REAL_STACKING_CONTEXT);
         const createsStackingContext = contains(child.flags, FLAGS.CREATES_STACKING_CONTEXT);
-        const paintContainer = new ElementPaint(child, parent.getParentEffects());
+        const paintContainer = new ElementPaint(child, parent);
         if (contains(child.styles.display, DISPLAY.LIST_ITEM)) {
             listItems.push(paintContainer);
         }
@@ -182,7 +196,7 @@ const processListItems = (owner: ElementContainer, elements: ElementPaint[]) =>
 };
 
 export const parseStackingContexts = (container: ElementContainer): StackingContext => {
-    const paintContainer = new ElementPaint(container, []);
+    const paintContainer = new ElementPaint(container, null);
     const root = new StackingContext(paintContainer);
     const listItems: ElementPaint[] = [];
     parseStackTree(paintContainer, root, root, listItems);

tests/reftests/animation.html

@@ -5,46 +5,93 @@
     <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
     <script type="text/javascript" src="../test.js"></script>
     <style>
-        span {
-            color:blue;
-        }
-        p {
-            background-color: green;
-        }
-        div {
-            background: red;
-            border: 5px solid blue;
-            animation: spin 3s linear 1s infinite;
-        }
         body {
             font-family: Arial;
         }
 
-        @-webkit-keyframes spin {
+        @keyframes rotate0 {
             0% {
-                -webkit-transform: rotate(0deg);
                 transform: rotate(0deg);
-                /* Firefox 16+, IE 10+, Opera */ }
+            }
-            100% {
+        }
-                -webkit-transform: rotate(360deg);
-                transform: rotate(360deg);
-                /* Firefox 16+, IE 10+, Opera */ } }
 
-        @keyframes spin {
+        @keyframes rotate45 {
             0% {
-                -webkit-transform: rotate(0deg);
+                transform: rotate(45deg);
-                transform: rotate(0deg);
+            }
-                /* Firefox 16+, IE 10+, Opera */ }
+        }
-            100% {
+
-                -webkit-transform: rotate(360deg);
+        p {
-                transform: rotate(360deg);
+            font: 22px/1 Arial, sans-serif;
-                /* Firefox 16+, IE 10+, Opera */ } }
+            position: absolute;
+            top: 25%;
+            left: 25%;
+            width: 50%;
+            height: 50%;
+            color: #fff;
+            background-color: #666;
+            line-height: 90px;
+            text-align: center;
+        }
+
+        .transformed.working p {
+            transform: rotate(45deg);
+        }
+
+        .animated.working p {
+            animation-name: rotate0;
+            animation-duration: 1ms, 1ms;
+            animation-play-state: paused;
+        }
+
+        .animated.broken p {
+            animation-name: rotate45;
+            animation-duration: 1ms;
+            animation-play-state: paused;
+        }
+
+        .transitioned p {
+            transition: 1ms, 1ms;
+            transform: rotate(45deg)
+        }
+
+        .transition-delay {
+            transition: 1ms;
+            transition-delay: 50ms;
+            transform: rotate(45deg)
+        }
+
+        div {
+            float: left;
+            clear: left;
+            margin-right: 10px;
+            background-color: #ccc;
+            width: 180px;
+            height: 180px;
+            position: relative;
+        }
     </style>
 
 </head>
 <body>
-<div style="clip: rect(0px, 400px, 50px, 200px); ">Some inline text <span> followed by text in span </span> followed by more inline text.
+<div class="transformed working">
-    <p>Then a block level element.</p>
+    <p>Hello</p>
-    Then more inline text.</div>
+</div>
+
+<div class="animated working">
+    <p>Hello</p>
+</div>
+
+<div class="animated broken">
+    <p>Hello</p>
+</div>
+
+<div class="transitioned broken">
+    <p>Hello</p>
+</div>
+
+<div class="transition-delay">
+    <p>Hello</p>
+</div>
 </body>
 </html>

tests/reftests/images/video.html

@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>Video tests</title>
+    <script type="text/javascript" src="../../test.js"></script>
+</head>
+<body>
+<h2>Same origin</h2>
+<video controls width="250">
+    <source src="../../assets/cc0-video.mp4" type="video/mp4">
+    Sorry, your browser doesn't support embedded videos.
+</video>
+<h2>Cross-origin (doesn't taint)</h2>
+<video controls width="250">
+    <source src="http://localhost:8081/cors/tests/assets/cc0-video.mp4" type="video/mp4">
+    Sorry, your browser doesn't support embedded videos.
+</video>
+</body>
+</html>

tests/reftests/overflow/overflow.html

@@ -51,6 +51,9 @@
         .scroll {
             overflow: scroll;
         }
+        .clip {
+            overflow: clip;
+        }
         .auto {
             overflow: auto;
         }
@@ -70,6 +73,10 @@
     scroll
     <p class="scroll">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec luctus pretium facilisis. Praesent rutrum eget nisl in tristique. Sed tincidunt nisl et tellus vulputate, nec rhoncus orci pretium.</p>
 </div>
+<div class="cell">
+    clip
+    <p class="clip">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec luctus pretium facilisis. Praesent rutrum eget nisl in tristique. Sed tincidunt nisl et tellus vulputate, nec rhoncus orci pretium.</p>
+</div>
 <div class="cell">
     auto
     <p class="auto">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec luctus pretium facilisis. Praesent rutrum eget nisl in tristique. Sed tincidunt nisl et tellus vulputate, nec rhoncus orci pretium.</p>
@@ -129,5 +136,17 @@
     </script>
 </div>
 <div class="hidden">Hidden<div style="opacity: 0.5">With opacity</div></div>
+<div class="hidden" style="height: 0px; width: 50px;">
+    <div style="position: absolute; width: 50px; height: 50px; left:400px;">absolute on static parent</div>
+</div>
+<div class="hidden" style="height: 0px; width: 50px;">
+    <div style="position: relative; width: 10px; height: 10px; left:400px;">relative on static parent</div>
+</div>
+<div class="hidden" style="height: 0px; width: 50px;">
+    <div style="position: fixed; width: 50px; height: 50px; left:400px; top:0;">fixed on static parent</div>
+</div>
+<div class="hidden" style="height: 0px; width: 50px;position: relative;">
+    <div style="position: absolute; width: 10px; height: 10px; left:400px;">absolute on relative parent</div>
+</div>
 </body>
 </html>

tests/reftests/pseudo-content.html

@@ -86,6 +86,20 @@
                                             of the section counter, separated
                                             by a period */
         }
+
+        .issue-2639 {
+            display: flex;
+        }
+
+        .issue-2639::before {
+            content: counter(ol0) '. ';
+            counter-increment: ol0;
+        }
+
+        .issue-2639:first-child {
+            counter-reset: ol0;
+        }
+
     </style>
 </head>
 <body>
@@ -163,5 +177,10 @@
     <li>item</li>          <!-- 2     -->
 </ol>
 
+<ol>
+    <li class="issue-2639">one</li>
+    <li class="issue-2639">two</li>
+</ol>
+
 </body>
 </html>

tests/reftests/text/lang/chinese.html

@@ -11,6 +11,13 @@
         float: left;
       }
 
+      .apple-system {
+          font-family: -apple-system, Arial;
+      }
+
+      .system-ui {
+          font-family: system-ui, Arial;
+      }
     </style>
   </head>
   <body>
@@ -32,5 +39,7 @@
       </p><p>&nbsp;&nbsp;&nbsp;&nbsp;〔13〕 法捷耶夫（一九○一——一九五六），苏联名作家。他所作的小说《毁灭》于一九二七年出版，内容是描写苏联国内战争时期由苏联远东滨海边区工人、农民和革命知识分子所组成的一支游击队同国内反革命白卫军以及日本武装干涉军进行斗争的故事。这部小说曾由鲁迅译为汉文。
       </p><p>&nbsp;&nbsp;&nbsp;&nbsp;〔14〕 见鲁迅《集外集·自嘲》（《鲁迅全集》第7卷，人民文学出版社1981年版，第147页）。</p>
     </div>
+    <div class="apple-system">中文</div>
+    <div class="system-ui">中文</div>
   </body>
 </html>

tests/reftests/text/text.html

@@ -149,5 +149,6 @@
     <span>[AB / CD]</span>
 </div>
 <div>Emojis 🤷🏾‍♂️👨‍👩‍👧‍👦 :)</div>
+<div style="letter-spacing: 2px">Emojis with letter-spacing 🤷🏾‍♂️👨‍👩‍👧‍👦 :) ❤️❤️❤️👨‍❤️‍💋‍👨👨‍❤️‍👨</div>
 </body>
 </html>

tests/reftests/webcomponents/autonomous-custom-element.js

@@ -40,6 +40,10 @@ class AutonomousCustomElement extends HTMLElement {
         wrapper.appendChild(img);
         wrapper.appendChild(info);
     }
+
+    connectedCallback() {
+        this.shadowRoot.adoptedStyleSheets = [sheet];
+    }
 }
 
 customElements.define('autonomous-custom-element', AutonomousCustomElement);

tests/reftests/webcomponents/webcomponents.html

@@ -3,10 +3,11 @@
 <head>
     <title>Web components tests</title>
     <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
+    <script>
+        const sheet = new CSSStyleSheet();
+        sheet.replaceSync('* { color: red !important; }')
+    </script>
     <script type="text/javascript" src="../../test.js"></script>
-    <style>
-
-    </style>
 </head>
 <body>
 <div>

tests/server.ts

@@ -12,7 +12,7 @@ const mkdirp = require('mkdirp');
 
 export const app = express();
 app.use('/', serveIndex(path.resolve(__dirname, '../'), {icons: true}));
-app.use('/', express.static(path.resolve(__dirname, '../')));
+app.use([/^\/src($|\/)/, '/'], express.static(path.resolve(__dirname, '../')));
 
 export const corsApp = express();
 corsApp.use('/proxy', proxy());

www/.gitignore

@@ -9,3 +9,5 @@ yarn-error.log
 src/results.json
 static/tests/preview.js
 src/preview.js
+.docusaurus
+build/

www/package.json

@@ -32,8 +32,10 @@
   "license": "MIT",
   "main": "n/a",
   "scripts": {
-    "copybuild": "mkdirp public/dist && cpy ../dist/*.js public/dist",
+    "copy:build": "mkdirp public/dist && cpy ../dist/*.js public/dist",
-    "build": "npm run copybuild && gatsby build",
+    "copy:src": "mkdirp public/src && cpy ../src/**/*.ts public/src --parents",
+    "copy": "npm run copy:build && npm run copy:src",
+    "build": "npm run copy && gatsby build",
     "start": "gatsby develop",
     "test": "echo \"Error: no test specified\" && exit 1"
   }