add initial marp implementation with sample content and build configuration

2025-09-13 18:13:22 +02:00
parent dcacc9b409
commit e5f219507f
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+/*************************************************************
+ *
+ *  Copyright (c) 2017-2022 The MathJax Consortium
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+/**
+ * @fileoverview  Implements the a base class for CHTMLmsubsup, CHTMLmunderover
+ *                and their relatives.  (Since munderover can become msubsup
+ *                when movablelimits is set, munderover needs to be able to
+ *                do the same thing as msubsup in some cases.)
+ *
+ * @author dpvc@mathjax.org (Davide Cervone)
+ */
+
+import {CHTMLWrapper, CHTMLConstructor} from '../Wrapper.js';
+import {CommonScriptbaseMixin} from '../../common/Wrappers/scriptbase.js';
+import {BBox} from '../../../util/BBox.js';
+import {StyleData} from '../../../util/StyleList.js';
+
+/*****************************************************************/
+/**
+ * A base class for msup/msub/msubsup and munder/mover/munderover
+ * wrapper implementations
+ *
+ * @template N  The HTMLElement node class
+ * @template T  The Text node class
+ * @template D  The Document class
+ */
+// @ts-ignore
+export class CHTMLscriptbase<N, T, D> extends
+CommonScriptbaseMixin<CHTMLWrapper<any, any, any>, CHTMLConstructor<any, any, any>>(CHTMLWrapper) {
+
+  /**
+   * The scriptbase wrapper
+   */
+  public static kind = 'scriptbase';
+
+  /**
+   * This gives the common output for msub and msup.  It is overridden
+   * for all the others (msubsup, munder, mover, munderover).
+   *
+   * @override
+   */
+  public toCHTML(parent: N) {
+    this.chtml = this.standardCHTMLnode(parent);
+    const [x, v] = this.getOffset();
+    const dx = x - (this.baseRemoveIc ? this.baseIc : 0);
+    const style: StyleData = {'vertical-align': this.em(v)};
+    if (dx) {
+      style['margin-left'] = this.em(dx);
+    }
+    this.baseChild.toCHTML(this.chtml);
+    this.scriptChild.toCHTML(this.adaptor.append(this.chtml, this.html('mjx-script', {style})) as N);
+  }
+
+  /**
+   * @param {N[]} nodes    The HTML elements to be centered in a stack
+   * @param {number[]} dx  The x offsets needed to center the elements
+   */
+  protected setDeltaW(nodes: N[], dx: number[]) {
+    for (let i = 0; i < dx.length; i++) {
+      if (dx[i]) {
+        this.adaptor.setStyle(nodes[i], 'paddingLeft', this.em(dx[i]));
+      }
+    }
+  }
+
+  /**
+   * @param {N} over        The HTML element for the overscript
+   * @param {BBox} overbox  The bbox for the overscript
+   */
+  protected adjustOverDepth(over: N, overbox: BBox) {
+    if (overbox.d >= 0) return;
+    this.adaptor.setStyle(over, 'marginBottom', this.em(overbox.d * overbox.rscale));
+  }
+
+  /**
+   * @param {N} under        The HTML element for the underscript
+   * @param {BBox} underbox  The bbox for the underscript
+   */
+  protected adjustUnderDepth(under: N, underbox: BBox) {
+    if (underbox.d >= 0) return;
+    const adaptor = this.adaptor;
+    const v = this.em(underbox.d);
+    const box = this.html('mjx-box', {style: {'margin-bottom': v, 'vertical-align': v}});
+    for (const child of adaptor.childNodes(adaptor.firstChild(under) as N) as N[]) {
+      adaptor.append(box, child);
+    }
+    adaptor.append(adaptor.firstChild(under) as N, box);
+  }
+
+  /**
+   * @param {N} base        The HTML element for the base
+   * @param {BBox} basebox  The bbox for the base
+   */
+  protected adjustBaseHeight(base: N, basebox: BBox) {
+    if (this.node.attributes.get('accent')) {
+      const minH = this.font.params.x_height * basebox.scale;
+      if (basebox.h < minH) {
+        this.adaptor.setStyle(base, 'paddingTop', this.em(minH - basebox.h));
+        basebox.h = minH;
+      }
+    }
+  }
+
+}