Change how resizable images work (#1859)

* Add ResizableImage.svelte in ts/editable

* Set image constrained via attributes instead of managed style sheet

* Implement new constrained size method

* Turn WithImageConstrained.svelte into normal ts file

* Introduce removeStyleProperties

Removes "style" attribute if all style properties were cleared

* Avoid --editor-width and use one variable set on container

* Disable shrinking if already smaller than shrunken size

* Add button to restore image to original size

* Don't allow restoring original size if no custom width set

* Bottom-center HandleLabel

* Satisfy svelte-check

ftl/core/editing.ftl

@@ -15,6 +15,7 @@ editing-customize-card-templates = Customize Card Templates
 editing-customize-fields = Customize Fields
 editing-cut = Cut
 editing-double-click-image = double-click image
+editing-double-click-to-expand = (double-click to expand)
 editing-edit-current = Edit Current
 editing-edit-html = Edit HTML
 editing-fields = Fields
@@ -38,6 +39,7 @@ editing-outdent = Decrease indent
 editing-paste = Paste
 editing-record-audio = Record audio
 editing-remove-formatting = Remove formatting
+editing-restore-original-size = Restore original size
 editing-select-remove-formatting = Select formatting to remove
 editing-show-duplicates = Show Duplicates
 editing-subscript = Subscript

ts/editable/ResizableImage.svelte

@@ -0,0 +1,11 @@
+<!--
+Copyright: Ankitects Pty Ltd and contributors
+License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
+-->
+<style lang="scss">
+    :global([data-editor-shrink]:not([data-editor-shrink="false"])) {
+        max-width: var(--editor-shrink-max-width);
+        max-height: var(--editor-shrink-max-height);
+        width: auto;
+    }
+</style>

ts/editable/index.ts

@@ -5,3 +5,4 @@ import "./editable-base.css";
 /* only imported for the CSS */
 import "./ContentEditable.svelte";
 import "./Mathjax.svelte";
+import "./ResizableImage.svelte";

ts/editor/HandleLabel.svelte

@@ -4,53 +4,32 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
 <script lang="ts">
     import { getContext } from "svelte";
-    import { afterUpdate, createEventDispatcher, onMount } from "svelte";
+    import { createEventDispatcher, onMount } from "svelte";
     import type { Readable } from "svelte/store";
 
     import { directionKey } from "../lib/context-keys";
 
-    let dimensions: HTMLDivElement;
-    let overflowFix = 0;
-
     const direction = getContext<Readable<"ltr" | "rtl">>(directionKey);
-
-    function updateOverflow(dimensions: HTMLDivElement): void {
-        const boundingClientRect = dimensions.getBoundingClientRect();
-        const overflow =
-            $direction === "ltr"
-                ? boundingClientRect.x
-                : window.innerWidth - boundingClientRect.x - boundingClientRect.width;
-
-        overflowFix = Math.min(0, overflowFix + overflow, overflow);
-    }
-
-    afterUpdate(() => updateOverflow(dimensions));
-
-    function updateOverflowAsync(dimensions: HTMLDivElement): void {
-        setTimeout(() => updateOverflow(dimensions));
-    }
-
     const dispatch = createEventDispatcher();
 
     onMount(() => dispatch("mount"));
 </script>
 
-<div
-    bind:this={dimensions}
-    class="image-handle-dimensions"
-    class:is-rtl={$direction === "rtl"}
-    style="--overflow-fix: {overflowFix}px"
-    use:updateOverflowAsync
->
+<div class="image-handle-dimensions" class:is-rtl={$direction === "rtl"}>
     <slot />
 </div>
 
 <style lang="scss">
     div {
         position: absolute;
+        width: fit-content;
 
-        pointer-events: none;
-        user-select: none;
+        left: 0;
+        right: 0;
+        bottom: 3px;
+
+        margin-left: auto;
+        margin-right: auto;
 
         font-size: 13px;
         color: white;
@@ -59,16 +38,7 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
         border-radius: 5px;
         padding: 0 5px;
 
-        bottom: 3px;
-        right: 3px;
-        margin-left: 3px;
-        margin-right: var(--overflow-fix, 0);
-
-        &.is-rtl {
-            right: auto;
-            left: 3px;
-            margin-right: 3px;
-            margin-left: var(--overflow-fix, 0);
-        }
+        pointer-events: none;
+        user-select: none;
     }
 </style>

ts/editor/NoteEditor.svelte

@@ -339,7 +339,7 @@ the AddCards dialog) should be implemented in the user of this component.
                                 }}
                                 bind:this={richTextInputs[index]}
                             >
-                                <ImageHandle />
+                                <ImageHandle maxWidth={250} maxHeight={125} />
                                 <MathjaxHandle />
                             </RichTextInput>
 

ts/editor/editor-toolbar/BoldButton.svelte

@@ -9,9 +9,10 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
     import type { MatchType } from "../../domlib/surround";
     import * as tr from "../../lib/ftl";
     import { getPlatformString } from "../../lib/shortcuts";
+    import { removeStyleProperties } from "../../lib/styling";
     import { context as noteEditorContext } from "../NoteEditor.svelte";
     import { editingInputIsRichText } from "../rich-text-input";
-    import { removeEmptyStyle, Surrounder } from "../surround";
+    import { Surrounder } from "../surround";
     import { context as editorToolbarContext } from "./EditorToolbar.svelte";
     import { boldIcon } from "./icons";
 
@@ -25,9 +26,10 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
         const fontWeight = element.style.fontWeight;
         if (fontWeight === "bold" || Number(fontWeight) >= 400) {
             return match.clear((): void => {
-                element.style.removeProperty("font-weight");
-
-                if (removeEmptyStyle(element) && element.className.length === 0) {
+                if (
+                    removeStyleProperties(element, "font-weight") &&
+                    element.className.length === 0
+                ) {
                     match.remove();
                 }
             });

ts/editor/editor-toolbar/HighlightColorButton.svelte

@@ -11,9 +11,10 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
     } from "../../domlib/surround";
     import { bridgeCommand } from "../../lib/bridgecommand";
     import * as tr from "../../lib/ftl";
+    import { removeStyleProperties } from "../../lib/styling";
     import { context as noteEditorContext } from "../NoteEditor.svelte";
     import { editingInputIsRichText } from "../rich-text-input";
-    import { removeEmptyStyle, Surrounder } from "../surround";
+    import { Surrounder } from "../surround";
     import ColorPicker from "./ColorPicker.svelte";
     import type { RemoveFormat } from "./EditorToolbar.svelte";
     import { context as editorToolbarContext } from "./EditorToolbar.svelte";
@@ -45,9 +46,10 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 
         match.setCache(value);
         match.clear((): void => {
-            element.style.removeProperty("background-color");
-
-            if (removeEmptyStyle(element) && element.className.length === 0) {
+            if (
+                removeStyleProperties(element, "background-color") &&
+                element.className.length === 0
+            ) {
                 match.remove();
             }
         });

ts/editor/editor-toolbar/ItalicButton.svelte

@@ -9,9 +9,10 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
     import type { MatchType } from "../../domlib/surround";
     import * as tr from "../../lib/ftl";
     import { getPlatformString } from "../../lib/shortcuts";
+    import { removeStyleProperties } from "../../lib/styling";
     import { context as noteEditorContext } from "../NoteEditor.svelte";
     import { editingInputIsRichText } from "../rich-text-input";
-    import { removeEmptyStyle, Surrounder } from "../surround";
+    import { Surrounder } from "../surround";
     import { context as editorToolbarContext } from "./EditorToolbar.svelte";
     import { italicIcon } from "./icons";
 
@@ -24,9 +25,10 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 
         if (["italic", "oblique"].includes(element.style.fontStyle)) {
             return match.clear((): void => {
-                element.style.removeProperty("font-style");
-
-                if (removeEmptyStyle(element) && element.className.length === 0) {
+                if (
+                    removeStyleProperties(element, "font-style") &&
+                    element.className.length === 0
+                ) {
                     return match.remove();
                 }
             });

ts/editor/editor-toolbar/SubscriptButton.svelte

@@ -4,7 +4,7 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
 <script context="module" lang="ts">
     import type { MatchType } from "../../domlib/surround";
-    import { removeEmptyStyle } from "../surround";
+    import { removeStyleProperties } from "../../lib/styling";
 
     const surroundElement = document.createElement("sub");
 
@@ -15,9 +15,10 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 
         if (element.style.verticalAlign === "sub") {
             return match.clear((): void => {
-                element.style.removeProperty("vertical-align");
-
-                if (removeEmptyStyle(element) && element.className.length === 0) {
+                if (
+                    removeStyleProperties(element, "vertical-align") &&
+                    element.className.length === 0
+                ) {
                     return match.remove();
                 }
             });

ts/editor/editor-toolbar/SuperscriptButton.svelte

@@ -4,7 +4,7 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
 <script context="module" lang="ts">
     import type { MatchType } from "../../domlib/surround";
-    import { removeEmptyStyle } from "../surround";
+    import { removeStyleProperties } from "../../lib/styling";
 
     const surroundElement = document.createElement("sup");
 
@@ -15,9 +15,10 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 
         if (element.style.verticalAlign === "super") {
             return match.clear((): void => {
-                element.style.removeProperty("vertical-align");
-
-                if (removeEmptyStyle(element) && element.className.length === 0) {
+                if (
+                    removeStyleProperties(element, "vertical-align") &&
+                    element.className.length === 0
+                ) {
                     return match.remove();
                 }
             });

ts/editor/editor-toolbar/TextColorButton.svelte

@@ -13,10 +13,11 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
     import { bridgeCommand } from "../../lib/bridgecommand";
     import * as tr from "../../lib/ftl";
     import { getPlatformString } from "../../lib/shortcuts";
+    import { removeStyleProperties } from "../../lib/styling";
     import { withFontColor } from "../helpers";
     import { context as noteEditorContext } from "../NoteEditor.svelte";
     import { editingInputIsRichText } from "../rich-text-input";
-    import { removeEmptyStyle, Surrounder } from "../surround";
+    import { Surrounder } from "../surround";
     import ColorPicker from "./ColorPicker.svelte";
     import type { RemoveFormat } from "./EditorToolbar.svelte";
     import { context as editorToolbarContext } from "./EditorToolbar.svelte";
@@ -59,9 +60,10 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 
         match.setCache(value);
         match.clear((): void => {
-            element.style.removeProperty("color");
-
-            if (removeEmptyStyle(element) && element.className.length === 0) {
+            if (
+                removeStyleProperties(element, "color") &&
+                element.className.length === 0
+            ) {
                 match.remove();
             }
         });

ts/editor/image-overlay/ImageHandle.svelte

@@ -7,6 +7,7 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 
     import ButtonDropdown from "../../components/ButtonDropdown.svelte";
     import WithDropdown from "../../components/WithDropdown.svelte";
+    import * as tr from "../../lib/ftl";
     import HandleBackground from "../HandleBackground.svelte";
     import HandleControl from "../HandleControl.svelte";
     import HandleLabel from "../HandleLabel.svelte";
@@ -14,16 +15,33 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
     import { context } from "../rich-text-input";
     import FloatButtons from "./FloatButtons.svelte";
     import SizeSelect from "./SizeSelect.svelte";
-    import WithImageConstrained from "./WithImageConstrained.svelte";
 
-    const { container, styles } = context.get();
+    export let maxWidth: number;
+    export let maxHeight: number;
 
-    const sheetPromise = styles
-        .addStyleTag("imageOverlay")
-        .then((styleObject) => styleObject.element.sheet!);
+    const { container } = context.get();
+
+    $: {
+        container.style.setProperty("--editor-shrink-max-width", `${maxWidth}px`);
+        container.style.setProperty("--editor-shrink-max-height", `${maxHeight}px`);
+    }
 
     let activeImage: HTMLImageElement | null = null;
 
+    /**
+     * For element dataset attributes which work like the contenteditable attribute
+     */
+    function isDatasetAttributeFlagSet(
+        element: HTMLElement | SVGElement,
+        attribute: string,
+    ): boolean {
+        return attribute in element.dataset && element.dataset[attribute] !== "false";
+    }
+
+    $: isSizeConstrained = activeImage
+        ? isDatasetAttributeFlagSet(activeImage, "editorShrink")
+        : false;
+
     async function resetHandle(): Promise<void> {
         activeImage = null;
         await tick();
@@ -166,6 +184,20 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
         activeImage!.width = width;
     }
 
+    function toggleActualSize(): void {
+        if (isSizeConstrained) {
+            delete activeImage!.dataset.editorShrink;
+        } else {
+            activeImage!.dataset.editorShrink = "true";
+        }
+
+        isSizeConstrained = !isSizeConstrained;
+    }
+
+    function clearActualSize(): void {
+        activeImage!.removeAttribute("width");
+    }
+
     onDestroy(() => {
         resizeObserver.disconnect();
         container.removeEventListener("click", maybeShowHandle);
@@ -173,6 +205,24 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
         container.removeEventListener("key", resetHandle);
         container.removeEventListener("paste", resetHandle);
     });
+
+    let shrinkingDisabled: boolean;
+    $: shrinkingDisabled =
+        Number(actualWidth) <= maxWidth && Number(actualHeight) <= maxHeight;
+
+    let restoringDisabled: boolean;
+    $: restoringDisabled = !activeImage?.hasAttribute("width") ?? true;
+
+    const widthObserver = new MutationObserver(
+        () => (restoringDisabled = !activeImage!.hasAttribute("width")),
+    );
+
+    $: activeImage
+        ? widthObserver.observe(activeImage, {
+              attributes: true,
+              attributeFilter: ["width"],
+          })
+        : widthObserver.disconnect();
 </script>
 
 <WithDropdown
@@ -183,62 +233,69 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
     let:createDropdown
     let:dropdownObject
 >
-    {#await sheetPromise then sheet}
-        <WithImageConstrained
-            {sheet}
+    {#if activeImage}
+        <HandleSelection
+            bind:updateSelection
             {container}
-            {activeImage}
-            maxWidth={250}
-            maxHeight={125}
-            on:update={() => {
-                updateSizesWithDimensions();
-                dropdownObject.update();
-            }}
-            let:toggleActualSize
-            let:active
+            image={activeImage}
+            on:mount={(event) => createDropdown(event.detail.selection)}
         >
-            {#if activeImage}
-                <HandleSelection
-                    bind:updateSelection
-                    {container}
-                    image={activeImage}
-                    on:mount={(event) => createDropdown(event.detail.selection)}
-                >
-                    <HandleBackground on:dblclick={toggleActualSize} />
+            <HandleBackground
+                on:dblclick={() => {
+                    if (shrinkingDisabled) {
+                        return;
+                    }
+                    toggleActualSize();
+                    updateSizesWithDimensions();
+                    dropdownObject.update();
+                }}
+            />
 
-                    <HandleLabel on:mount={updateDimensions}>
-                        <span>{actualWidth}&times;{actualHeight}</span>
-                        {#if customDimensions}
-                            <span>(Original: {naturalWidth}&times;{naturalHeight})</span
-                            >
-                        {/if}
-                    </HandleLabel>
+            <HandleLabel on:mount={updateDimensions}>
+                {#if isSizeConstrained}
+                    <span>{tr.editingDoubleClickToExpand()}</span>
+                {:else}
+                    <span>{actualWidth}&times;{actualHeight}</span>
+                    {#if customDimensions}
+                        <span>(Original: {naturalWidth}&times;{naturalHeight})</span>
+                    {/if}
+                {/if}
+            </HandleLabel>
 
-                    <HandleControl
-                        {active}
-                        activeSize={8}
-                        offsetX={5}
-                        offsetY={5}
-                        on:pointerclick={(event) => {
-                            if (active) {
-                                setPointerCapture(event);
-                            }
-                        }}
-                        on:pointermove={(event) => {
-                            resize(event);
-                            updateSizesWithDimensions();
-                            dropdownObject.update();
-                        }}
-                    />
-                </HandleSelection>
-                <ButtonDropdown on:click={updateSizesWithDimensions}>
-                    <FloatButtons
-                        image={activeImage}
-                        on:update={dropdownObject.update}
-                    />
-                    <SizeSelect {active} on:click={toggleActualSize} />
-                </ButtonDropdown>
-            {/if}
-        </WithImageConstrained>
-    {/await}
+            <HandleControl
+                active={!isSizeConstrained}
+                activeSize={8}
+                offsetX={5}
+                offsetY={5}
+                on:pointerclick={(event) => {
+                    if (!isSizeConstrained) {
+                        setPointerCapture(event);
+                    }
+                }}
+                on:pointermove={(event) => {
+                    resize(event);
+                    updateSizesWithDimensions();
+                    dropdownObject.update();
+                }}
+            />
+        </HandleSelection>
+        <ButtonDropdown on:click={updateSizesWithDimensions}>
+            <FloatButtons image={activeImage} on:update={dropdownObject.update} />
+            <SizeSelect
+                {shrinkingDisabled}
+                {restoringDisabled}
+                {isSizeConstrained}
+                on:imagetoggle={() => {
+                    toggleActualSize();
+                    updateSizesWithDimensions();
+                    dropdownObject.update();
+                }}
+                on:imageclear={() => {
+                    clearActualSize();
+                    updateSizesWithDimensions();
+                    dropdownObject.update();
+                }}
+            />
+        </ButtonDropdown>
+    {/if}
 </WithDropdown>

ts/editor/image-overlay/SizeSelect.svelte

@@ -3,29 +3,38 @@ Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
 <script lang="ts">
-    import { getContext } from "svelte";
+    import { createEventDispatcher, getContext } from "svelte";
     import type { Readable } from "svelte/store";
 
     import ButtonGroup from "../../components/ButtonGroup.svelte";
     import IconButton from "../../components/IconButton.svelte";
     import { directionKey } from "../../lib/context-keys";
     import * as tr from "../../lib/ftl";
-    import { sizeActual, sizeMinimized } from "./icons";
+    import { sizeActual, sizeClear, sizeMinimized } from "./icons";
 
-    export let active: boolean;
+    export let isSizeConstrained: boolean;
+    export let shrinkingDisabled: boolean;
+    export let restoringDisabled: boolean;
 
-    $: icon = active ? sizeActual : sizeMinimized;
+    $: icon = isSizeConstrained ? sizeMinimized : sizeActual;
 
     const direction = getContext<Readable<"ltr" | "rtl">>(directionKey);
+    const dispatch = createEventDispatcher();
 </script>
 
 <ButtonGroup size={1.6}>
     <IconButton
-        {active}
+        disabled={shrinkingDisabled}
         flipX={$direction === "rtl"}
         tooltip="{tr.editingActualSize()} ({tr.editingDoubleClickImage()})"
-        on:click
-        --border-left-radius="5px"
-        --border-right-radius="5px">{@html icon}</IconButton
+        on:click={() => dispatch("imagetoggle")}
+        --border-left-radius="5px">{@html icon}</IconButton
+    >
+
+    <IconButton
+        disabled={restoringDisabled}
+        tooltip={tr.editingRestoreOriginalSize()}
+        on:click={() => dispatch("imageclear")}
+        --border-right-radius="5px">{@html sizeClear}</IconButton
     >
 </ButtonGroup>

ts/editor/image-overlay/WithImageConstrained.svelte

@@ -1,203 +0,0 @@
-<!--
-Copyright: Ankitects Pty Ltd and contributors
-License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
--->
-<script lang="ts">
-    import { createEventDispatcher, onDestroy } from "svelte";
-
-    import { nodeIsElement } from "../../lib/dom";
-
-    export let activeImage: HTMLImageElement | null;
-    export let container: HTMLElement;
-    export let sheet: CSSStyleSheet;
-
-    let active: boolean = false;
-
-    $: {
-        const index = images.indexOf(activeImage!);
-
-        if (index >= 0) {
-            const rule = sheet.cssRules[index] as CSSStyleRule;
-            active = rule.cssText.endsWith("{ }");
-        } else {
-            activeImage = null;
-        }
-    }
-
-    export let maxWidth: number;
-    export let maxHeight: number;
-
-    $: restrictionAspectRatio = maxWidth / maxHeight;
-
-    const dispatch = createEventDispatcher();
-
-    function createPathRecursive(tokens: string[], element: Element): string[] {
-        const tagName = element.tagName.toLowerCase();
-
-        if (!element.parentElement) {
-            const nth =
-                Array.prototype.indexOf.call(
-                    (element.parentNode! as Document | ShadowRoot).children,
-                    element,
-                ) + 1;
-            return [`${tagName}:nth-child(${nth})`, ...tokens];
-        } else {
-            const nth =
-                Array.prototype.indexOf.call(element.parentElement.children, element) +
-                1;
-            return createPathRecursive(
-                [`${tagName}:nth-child(${nth})`, ...tokens],
-                element.parentElement,
-            );
-        }
-    }
-
-    function createPath(element: Element): string {
-        return createPathRecursive([], element).join(" > ");
-    }
-
-    const images: HTMLImageElement[] = [];
-
-    $: for (const [index, image] of images.entries()) {
-        const rule = sheet.cssRules[index] as CSSStyleRule;
-        rule.selectorText = createPath(image);
-    }
-
-    function filterImages(nodes: HTMLCollection | Node[]): HTMLImageElement[] {
-        const result: HTMLImageElement[] = [];
-
-        for (const node of nodes) {
-            if (!nodeIsElement(node)) {
-                continue;
-            }
-
-            if (node.tagName === "IMG" && !(node as HTMLElement).dataset.anki) {
-                result.push(node as HTMLImageElement);
-            } else {
-                result.push(...filterImages(node.children));
-            }
-        }
-
-        return result;
-    }
-
-    function setImageRule(image: HTMLImageElement, rule: CSSStyleRule): void {
-        const aspectRatio = image.naturalWidth / image.naturalHeight;
-
-        if (restrictionAspectRatio - aspectRatio > 1) {
-            // restricted by height
-            rule.style.setProperty("width", "auto", "important");
-
-            const width = Number(image.getAttribute("width")) || image.width;
-            const height = Number(image.getAttribute("height")) || width / aspectRatio;
-            rule.style.setProperty(
-                "height",
-                height < maxHeight ? `${height}px` : "auto",
-                "important",
-            );
-        } else {
-            // square or restricted by width
-            const width = Number(image.getAttribute("width")) || image.width;
-            rule.style.setProperty(
-                "width",
-                width < maxWidth ? `${width}px` : "auto",
-                "important",
-            );
-
-            rule.style.setProperty("height", "auto", "important");
-        }
-
-        rule.style.setProperty("max-width", `min(${maxWidth}px, 100%)`, "important");
-        rule.style.setProperty("max-height", `${maxHeight}px`, "important");
-    }
-
-    function resetImageRule(rule: CSSStyleRule): void {
-        rule.style.removeProperty("width");
-        rule.style.removeProperty("height");
-        rule.style.removeProperty("max-width");
-        rule.style.removeProperty("max-height");
-    }
-
-    function addImage(image: HTMLImageElement): void {
-        if (!container.contains(image)) {
-            return;
-        }
-
-        images.push(image);
-        const index = sheet.insertRule(
-            `${createPath(image)} {}`,
-            sheet.cssRules.length,
-        );
-        const rule = sheet.cssRules[index] as CSSStyleRule;
-        setImageRule(image, rule);
-    }
-
-    function addImageOnLoad(image: HTMLImageElement): void {
-        if (image.complete && image.naturalWidth > 0 && image.naturalHeight > 0) {
-            addImage(image);
-        } else {
-            image.addEventListener("load", () => addImage(image));
-        }
-    }
-
-    function removeImage(image: HTMLImageElement): void {
-        const index = images.indexOf(image);
-        if (index < 0) {
-            return;
-        }
-
-        images.splice(index, 1);
-        sheet.deleteRule(index);
-    }
-
-    const mutationObserver = new MutationObserver((mutations) => {
-        const addedImages = mutations.flatMap((mutation) =>
-            filterImages([...mutation.addedNodes]),
-        );
-
-        for (const image of addedImages) {
-            addImageOnLoad(image);
-        }
-
-        const removedImages = mutations.flatMap((mutation) =>
-            filterImages([...mutation.removedNodes]),
-        );
-
-        for (const image of removedImages) {
-            removeImage(image);
-        }
-    });
-
-    mutationObserver.observe(container, {
-        childList: true,
-        subtree: true,
-    });
-
-    for (const image of filterImages([...container.childNodes])) {
-        addImageOnLoad(image);
-    }
-
-    onDestroy(() => mutationObserver.disconnect());
-
-    export function toggleActualSize() {
-        const index = images.indexOf(activeImage!);
-        if (index === -1) {
-            return;
-        }
-
-        const rule = sheet.cssRules[index] as CSSStyleRule;
-        active = !active;
-
-        if (active) {
-            resetImageRule(rule);
-        } else {
-            setImageRule(activeImage!, rule);
-        }
-
-        dispatch("update", active);
-    }
-</script>
-
-{#if activeImage}
-    <slot {toggleActualSize} {active} />
-{/if}

ts/editor/image-overlay/icons.ts

@@ -4,5 +4,6 @@
 export { default as floatLeftIcon } from "@mdi/svg/svg/format-float-left.svg";
 export { default as floatNoneIcon } from "@mdi/svg/svg/format-float-none.svg";
 export { default as floatRightIcon } from "@mdi/svg/svg/format-float-right.svg";
+export { default as sizeClear } from "@mdi/svg/svg/image-remove.svg";
 export { default as sizeActual } from "@mdi/svg/svg/image-size-select-actual.svg";
 export { default as sizeMinimized } from "@mdi/svg/svg/image-size-select-large.svg";

ts/editor/surround.ts

@@ -243,19 +243,6 @@ export class Surrounder {
     }
 }
 
-/**
- * @returns True, if element has no style attribute (anymore).
- */
-export function removeEmptyStyle(element: HTMLElement | SVGElement): boolean {
-    if (element.style.cssText.length === 0) {
-        element.removeAttribute("style");
-        // Calling `.hasAttribute` right after `.removeAttribute` might return true.
-        return true;
-    }
-
-    return false;
-}
-
 registerPackage("anki/surround", {
     Surrounder,
 });

ts/lib/styling.ts

@@ -0,0 +1,31 @@
+// Copyright: Ankitects Pty Ltd and contributors
+// License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
+
+/**
+ * @returns True, if element has no style attribute (anymore).
+ */
+function removeEmptyStyle(element: HTMLElement | SVGElement): boolean {
+    if (element.style.cssText.length === 0) {
+        element.removeAttribute("style");
+        // Calling `.hasAttribute` right after `.removeAttribute` might return true.
+        return true;
+    }
+
+    return false;
+}
+
+/**
+ * Will remove the style attribute, if all properties were removed.
+ *
+ * @returns True, if element has no style attributes anymore
+ */
+export function removeStyleProperties(
+    element: HTMLElement | SVGElement,
+    ...props: string[]
+): boolean {
+    for (const prop of props) {
+        element.style.removeProperty(prop);
+    }
+
+    return removeEmptyStyle(element);
+}