feat: Support mtable, mtd, mtr for draw matrix. (Sub6Resources#1164)

fukatani · web-flow · commit e99e2cc1553a · 2022-10-20T12:26:19.000-06:00
diff --git a/packages/flutter_html_math/lib/flutter_html_math.dart b/packages/flutter_html_math/lib/flutter_html_math.dart
@@ -39,7 +39,9 @@ CustomRenderMatcher mathMatcher() => (context) {
 String _parseMathRecursive(dom.Node node, String parsed) {
   if (node is dom.Element) {
     List<dom.Element> nodeList = node.nodes.whereType<dom.Element>().toList();
-    if (node.localName == "math" || node.localName == "mrow") {
+    if (node.localName == "math" ||
+        node.localName == "mrow" ||
+        node.localName == "mtr") {
       for (var element in nodeList) {
         parsed = _parseMathRecursive(element, parsed);
       }
@@ -98,6 +100,17 @@ String _parseMathRecursive(dom.Node node, String parsed) {
         parsed = parsed + node.text.trim();
       }
     }
+    if (node.localName == 'mtable') {
+      String inner =
+          nodeList.map((e) => _parseMathRecursive(e, '')).join(' \\\\');
+      parsed = '$parsed\\begin{matrix}$inner\\end{matrix}';
+    }
+    if (node.localName == "mtd") {
+      for (var element in nodeList) {
+        parsed = _parseMathRecursive(element, parsed);
+      }
+      parsed = '$parsed & ';
+    }
   }
   return parsed;
 }

Original file line number	Diff line number	Diff line change
`@@ -39,7 +39,9 @@ CustomRenderMatcher mathMatcher() => (context) {`
`39`	`39`	`String _parseMathRecursive(dom.Node node, String parsed) {`
`40`	`40`	`if (node is dom.Element) {`
`41`	`41`	`List<dom.Element> nodeList = node.nodes.whereType<dom.Element>().toList();`
`42`		`- if (node.localName == "math" \|\| node.localName == "mrow") {`
	`42`	`+ if (node.localName == "math" \|\|`
	`43`	`+ node.localName == "mrow" \|\|`
	`44`	`+ node.localName == "mtr") {`
`43`	`45`	`for (var element in nodeList) {`
`44`	`46`	`parsed = _parseMathRecursive(element, parsed);`
`45`	`47`	`}`
`@@ -98,6 +100,17 @@ String _parseMathRecursive(dom.Node node, String parsed) {`
`98`	`100`	`parsed = parsed + node.text.trim();`
`99`	`101`	`}`
`100`	`102`	`}`
	`103`	`+ if (node.localName == 'mtable') {`
	`104`	`+ String inner =`
	`105`	`+ nodeList.map((e) => _parseMathRecursive(e, '')).join(' \\\\');`
	`106`	`+ parsed = '$parsed\\begin{matrix}$inner\\end{matrix}';`
	`107`	`+ }`
	`108`	`+ if (node.localName == "mtd") {`
	`109`	`+ for (var element in nodeList) {`
	`110`	`+ parsed = _parseMathRecursive(element, parsed);`
	`111`	`+ }`
	`112`	`+ parsed = '$parsed & ';`
	`113`	`+ }`
`101`	`114`	`}`
`102`	`115`	`return parsed;`
`103`	`116`	`}`