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fix(ib): Inline HTML tags and support for sub, sup tags (#116)
Signed-off-by: Manjot Sidhu <manjot.techie@gmail.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,24 @@ | ||
| import 'package:flutter/material.dart'; | ||
| import 'package:flutter_markdown/flutter_markdown.dart'; | ||
| import 'package:markdown/markdown.dart' as md; | ||
| import 'package:mobile_app/utils/unicode_map.dart'; | ||
|
|
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| class IbSubscriptBuilder extends MarkdownElementBuilder { | ||
| @override | ||
| Widget visitElementAfter(md.Element element, TextStyle preferredStyle) { | ||
| final textContent = element.textContent; | ||
|
|
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| // We don't currently have a way to control the vertical alignment of text spans. | ||
| // See https://github.com/flutter/flutter/issues/10906#issuecomment-385723664 | ||
| // Also, SelectableText for flutter_markdown doesn't supports WidgetSpan | ||
|
|
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| var text = ''; | ||
| for (var i = 0; i < textContent.length; i++) { | ||
| if (UnicodeMap.containsKey(textContent[i])) { | ||
| text += UnicodeMap[textContent[i]][1]; | ||
| } | ||
| } | ||
|
|
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| return SelectableText.rich(TextSpan(text: text)); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,24 @@ | ||
| import 'package:flutter/material.dart'; | ||
| import 'package:flutter_markdown/flutter_markdown.dart'; | ||
| import 'package:markdown/markdown.dart' as md; | ||
| import 'package:mobile_app/utils/unicode_map.dart'; | ||
|
|
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| class IbSuperscriptBuilder extends MarkdownElementBuilder { | ||
| @override | ||
| Widget visitElementAfter(md.Element element, TextStyle preferredStyle) { | ||
| final textContent = element.textContent; | ||
|
|
||
| // We don't currently have a way to control the vertical alignment of text spans. | ||
| // See https://github.com/flutter/flutter/issues/10906#issuecomment-385723664 | ||
| // Also, SelectableText for flutter_markdown doesn't supports WidgetSpan | ||
|
|
||
| var text = ''; | ||
| for (var i = 0; i < textContent.length; i++) { | ||
| if (UnicodeMap.containsKey(textContent[i])) { | ||
| text += UnicodeMap[textContent[i]][0]; | ||
| } | ||
| } | ||
|
|
||
| return SelectableText.rich(TextSpan(text: text)); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,22 @@ | ||
| import 'package:flutter/material.dart'; | ||
| import 'package:flutter_markdown/flutter_markdown.dart'; | ||
| import 'package:markdown/markdown.dart' as md; | ||
|
|
||
| class IbInlineHtmlSyntax extends md.InlineSyntax { | ||
| Map<String, MarkdownElementBuilder> builders; | ||
|
|
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| IbInlineHtmlSyntax({@required this.builders}) : super(_pattern); | ||
|
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| static const String _pattern = r'<(\S*?)[^>]*>(.*?)<\/\1>|<.*?\/>'; | ||
|
|
||
| @override | ||
| bool onMatch(md.InlineParser parser, Match match) { | ||
| if (match[1] != null && | ||
| match[2] != null && | ||
| builders.containsKey(match[1].trim())) { | ||
| parser.addNode(md.Element.text(match[1].trim(), match[2].trim())); | ||
| } | ||
|
|
||
| return true; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,83 @@ | ||
| /// Unicode Map for Subscript and Subscript character | ||
| var UnicodeMap = { | ||
| ' ': [' ', ' '], | ||
| '0': ['\u2070', '\u2080'], | ||
| '1': ['\u00B9', '\u2081'], | ||
| '2': ['\u00B2', '\u2082'], | ||
| '3': ['\u00B3', '\u2083'], | ||
| '4': ['\u2074', '\u2084'], | ||
| '5': ['\u2075', '\u2085'], | ||
| '6': ['\u2076', '\u2086'], | ||
| '7': ['\u2077', '\u2087'], | ||
| '8': ['\u2078', '\u2088'], | ||
| '9': ['\u2079', '\u2089'], | ||
| 'a': ['\u1d43', '\u2090'], | ||
| 'b': ['\u1d47', '?'], | ||
| 'c': ['\u1d9c', '?'], | ||
| 'd': ['\u1d48', '?'], | ||
| 'e': ['\u1d49', '\u2091'], | ||
| 'f': ['\u1da0', '?'], | ||
| 'g': ['\u1d4d', '?'], | ||
| 'h': ['\u02b0', '\u2095'], | ||
| 'i': ['\u2071', '\u1d62'], | ||
| 'j': ['\u02b2', '\u2c7c'], | ||
| 'k': ['\u1d4f', '\u2096'], | ||
| 'l': ['\u02e1', '\u2097'], | ||
| 'm': ['\u1d50', '\u2098'], | ||
| 'n': ['\u207f', '\u2099'], | ||
| 'o': ['\u1d52', '\u2092'], | ||
| 'p': ['\u1d56', '\u209a'], | ||
| 'q': ['?', '?'], | ||
| 'r': ['\u02b3', '\u1d63'], | ||
| 's': ['\u02e2', '\u209b'], | ||
| 't': ['\u1d57', '\u209c'], | ||
| 'u': ['\u1d58', '\u1d64'], | ||
| 'v': ['\u1d5b', '\u1d65'], | ||
| 'w': ['\u02b7', '?'], | ||
| 'x': ['\u02e3', '\u2093'], | ||
| 'y': ['\u02b8', '?'], | ||
| 'z': ['?', '?'], | ||
| 'A': ['\u1d2c', '?'], | ||
| 'B': ['\u1d2e', '?'], | ||
| 'C': ['?', '?'], | ||
| 'D': ['\u1d30', '?'], | ||
| 'E': ['\u1d31', '?'], | ||
| 'F': ['?', '?'], | ||
| 'G': ['\u1d33', '?'], | ||
| 'H': ['\u1d34', '?'], | ||
| 'I': ['\u1d35', '?'], | ||
| 'J': ['\u1d36', '?'], | ||
| 'K': ['\u1d37', '?'], | ||
| 'L': ['\u1d38', '?'], | ||
| 'M': ['\u1d39', '?'], | ||
| 'N': ['\u1d3a', '?'], | ||
| 'O': ['\u1d3c', '?'], | ||
| 'P': ['\u1d3e', '?'], | ||
| 'Q': ['?', '?'], | ||
| 'R': ['\u1d3f', '?'], | ||
| 'S': ['?', '?'], | ||
| 'T': ['\u1d40', '?'], | ||
| 'U': ['\u1d41', '?'], | ||
| 'V': ['\u2c7d', '?'], | ||
| 'W': ['\u1d42', '?'], | ||
| 'X': ['?', '?'], | ||
| 'Y': ['?', '?'], | ||
| 'Z': ['?', '?'], | ||
| '+': ['\u207A', '\u208A'], | ||
| '-': ['\u207B', '\u208B'], | ||
| '=': ['\u207C', '\u208C'], | ||
| '[': ['\u207D', '\u208D'], | ||
| ']': ['\u207E', '\u208E'], | ||
| ':alpha': ['\u1d45', '?'], | ||
| ':beta': ['\u1d5d', '\u1d66'], | ||
| ':gamma': ['\u1d5e', '\u1d67'], | ||
| ':delta': ['\u1d5f', '?'], | ||
| ':epsilon': ['\u1d4b', '?'], | ||
| ':theta': ['\u1dbf', '?'], | ||
| ':iota': ['\u1da5', '?'], | ||
| ':pho': ['?', '\u1d68'], | ||
| ':phi': ['\u1db2', '?'], | ||
| ':psi': ['\u1d60', '\u1d69'], | ||
| ':chi': ['\u1d61', '\u1d6a'], | ||
| ':coffee': ['\u2615', '\u2615'] | ||
| }; |