anki/ts/editor/editor-toolbar/LatexButton.svelte
Damien Elmes 75723d7c9c
Add option in math dropdown to toggle MathJax rendering (#2014)
* Add option in math dropdown to toggle MathJax rendering

Closes #1942

* Hackily redraw the page when toggling MathJax

* Add Fluent string
2022-08-18 12:06:06 +10:00

118 lines
3.7 KiB
Svelte

<!--
Copyright: Ankitects Pty Ltd and contributors
License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
-->
<script lang="ts">
import { writable } from "svelte/store";
import DropdownItem from "../../components/DropdownItem.svelte";
import IconButton from "../../components/IconButton.svelte";
import Popover from "../../components/Popover.svelte";
import Shortcut from "../../components/Shortcut.svelte";
import WithFloating from "../../components/WithFloating.svelte";
import { mathjaxConfig } from "../../editable/mathjax-element";
import { bridgeCommand } from "../../lib/bridgecommand";
import * as tr from "../../lib/ftl";
import { getPlatformString } from "../../lib/shortcuts";
import { wrapInternal } from "../../lib/wrap";
import { context as noteEditorContext } from "../NoteEditor.svelte";
import type { RichTextInputAPI } from "../rich-text-input";
import { editingInputIsRichText } from "../rich-text-input";
import { functionIcon } from "./icons";
const { focusedInput } = noteEditorContext.get();
$: richTextAPI = $focusedInput as RichTextInputAPI;
async function surround(front: string, back: string): Promise<void> {
const element = await richTextAPI.element;
wrapInternal(element, front, back, false);
}
function onMathjaxInline(): void {
surround("<anki-mathjax focusonmount>", "</anki-mathjax>");
}
function onMathjaxBlock(): void {
surround('<anki-mathjax block="true" focusonmount>', "</anki-matjax>");
}
function onMathjaxChemistry(): void {
surround('<anki-mathjax focusonmount="0,4">\\ce{', "}</anki-mathjax>");
}
function onLatex(): void {
surround("[latex]", "[/latex]");
}
function onLatexEquation(): void {
surround("[$]", "[/$]");
}
function onLatexMathEnv(): void {
surround("[$$]", "[/$$]");
}
function toggleShowMathjax(): void {
mathjaxConfig.enabled = !mathjaxConfig.enabled;
bridgeCommand("toggleMathjax");
}
type LatexItem = [() => void, string, string];
const dropdownItems: LatexItem[] = [
[onMathjaxInline, "Control+M, M", tr.editingMathjaxInline()],
[onMathjaxBlock, "Control+M, E", tr.editingMathjaxBlock()],
[onMathjaxChemistry, "Control+M, C", tr.editingMathjaxChemistry()],
[onLatex, "Control+T, T", tr.editingLatex()],
[onLatexEquation, "Control+T, E", tr.editingLatexEquation()],
[onLatexMathEnv, "Control+T, M", tr.editingLatexMathEnv()],
];
$: disabled = !editingInputIsRichText($focusedInput);
const showDropdown = writable(false);
$: if (disabled) {
$showDropdown = false;
}
</script>
<WithFloating show={showDropdown} closeOnInsideClick>
<span
class="latex-button"
slot="reference"
let:asReference
use:asReference
let:toggle
>
<IconButton slot="reference" {disabled} on:click={toggle}>
{@html functionIcon}
</IconButton>
</span>
<Popover slot="floating">
{#each dropdownItems as [callback, keyCombination, label]}
<DropdownItem on:click={callback}>
{label}
<span class="ms-auto ps-2 shortcut"
>{getPlatformString(keyCombination)}</span
>
</DropdownItem>
<Shortcut {keyCombination} on:action={callback} />
{/each}
<DropdownItem on:click={toggleShowMathjax}>
<span>{tr.editingToggleMathjaxRendering()}</span>
</DropdownItem>
</Popover>
</WithFloating>
<style lang="scss">
.latex-button {
line-height: 1;
}
.shortcut {
font: Verdana;
}
</style>