stuff

node_modules/katex/src/functions/phantom.ts

@@ -0,0 +1,73 @@
+import defineFunction, {ordargument} from "../defineFunction";
+import defineMacro from "../defineMacro";
+import {makeFragment, makeSpan} from "../buildCommon";
+import {MathNode} from "../mathMLTree";
+
+import * as html from "../buildHTML";
+import * as mml from "../buildMathML";
+
+defineFunction({
+    type: "phantom",
+    names: ["\\phantom"],
+    props: {
+        numArgs: 1,
+        allowedInText: true,
+    },
+    handler: ({parser}, args) => {
+        const body = args[0];
+        return {
+            type: "phantom",
+            mode: parser.mode,
+            body: ordargument(body),
+        };
+    },
+    htmlBuilder: (group, options) => {
+        const elements = html.buildExpression(
+            group.body,
+            options.withPhantom(),
+            false
+        );
+
+        // \phantom isn't supposed to affect the elements it contains.
+        // See "color" for more details.
+        return makeFragment(elements);
+    },
+    mathmlBuilder: (group, options) => {
+        const inner = mml.buildExpression(group.body, options);
+        return new MathNode("mphantom", inner);
+    },
+});
+
+defineMacro("\\hphantom", "\\smash{\\phantom{#1}}");
+
+defineFunction({
+    type: "vphantom",
+    names: ["\\vphantom"],
+    props: {
+        numArgs: 1,
+        allowedInText: true,
+    },
+    handler: ({parser}, args) => {
+        const body = args[0];
+        return {
+            type: "vphantom",
+            mode: parser.mode,
+            body,
+        };
+    },
+    htmlBuilder: (group, options) => {
+        const inner = makeSpan(
+            ["inner"],
+            [html.buildGroup(group.body, options.withPhantom())]);
+        const fix = makeSpan(["fix"], []);
+        return makeSpan(
+            ["mord", "rlap"], [inner, fix], options);
+    },
+    mathmlBuilder: (group, options) => {
+        const inner = mml.buildExpression(ordargument(group.body), options);
+        const phantom = new MathNode("mphantom", inner);
+        const node = new MathNode("mpadded", [phantom]);
+        node.setAttribute("width", "0px");
+        return node;
+    },
+});