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node_modules/mathjax-full/ts/output/chtml/Wrappers/mrow.ts

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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 CHTMLmrow wrapper for the MmlMrow object
+ *
+ * @author dpvc@mathjax.org (Davide Cervone)
+ */
+
+import {CHTMLWrapper, CHTMLConstructor, Constructor} from '../Wrapper.js';
+import {CommonMrowMixin} from '../../common/Wrappers/mrow.js';
+import {CommonInferredMrowMixin} from '../../common/Wrappers/mrow.js';
+import {MmlMrow, MmlInferredMrow} from '../../../core/MmlTree/MmlNodes/mrow.js';
+
+/*****************************************************************/
+/**
+ * The CHTMLmrow wrapper for the MmlMrow object
+ *
+ * @template N  The HTMLElement node class
+ * @template T  The Text node class
+ * @template D  The Document class
+ */
+// @ts-ignore
+export class CHTMLmrow<N, T, D> extends
+CommonMrowMixin<CHTMLConstructor<any, any, any>>(CHTMLWrapper) {
+
+  /**
+   * The mrow wrapper
+   */
+  public static kind = MmlMrow.prototype.kind;
+
+  /**
+   * @override
+   */
+  public toCHTML(parent: N) {
+    const chtml = (this.node.isInferred ? (this.chtml = parent) : this.standardCHTMLnode(parent));
+    let hasNegative = false;
+    for (const child of this.childNodes) {
+      child.toCHTML(chtml);
+      if (child.bbox.w < 0) {
+        hasNegative = true;
+      }
+    }
+    // FIXME:  handle line breaks
+    if (hasNegative) {
+      const {w} = this.getBBox();
+      if (w) {
+        this.adaptor.setStyle(chtml, 'width', this.em(Math.max(0, w)));
+        if (w < 0) {
+          this.adaptor.setStyle(chtml, 'marginRight', this.em(w));
+        }
+      }
+    }
+  }
+
+}
+
+/*****************************************************************/
+/**
+ *  The CHTMLinferredMrow wrapper for the MmlInferredMrow object
+ *
+ * @template N  The HTMLElement node class
+ * @template T  The Text node class
+ * @template D  The Document class
+ */
+// @ts-ignore
+export class CHTMLinferredMrow<N, T, D> extends
+CommonInferredMrowMixin<Constructor<CHTMLmrow<any, any, any>>>(CHTMLmrow) {
+
+  /**
+   * The inferred-mrow wrapper
+   */
+  public static kind = MmlInferredMrow.prototype.kind;
+
+}