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240 lines
6.8 KiB
Dart
240 lines
6.8 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:hexcolor/hexcolor.dart';
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class Texts extends StatefulWidget {
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final String text;
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final String variant;
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final Color color;
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final bool bold;
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final bool regular;
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final bool medium;
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final int maxLength;
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final bool italic;
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final TextAlign textAlign;
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final int maxLines;
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final bool readMore;
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final String style;
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final bool allowExpand;
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Texts(this.text, {Key key, this.variant, this.color,
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this.bold, this.regular, this.medium, this.allowExpand = true,
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this.italic:false, this.textAlign, this.maxLength=60,
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this.maxLines, this.readMore=false, this.style
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}) : super(key: key);
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@override
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_TextsState createState() => _TextsState();
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}
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class _TextsState extends State<Texts> {
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bool hidden = false;
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String text = "";
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@override
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void didUpdateWidget(Texts oldWidget) {
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setState(() {
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if (widget.style=="overline")
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text = widget.text.toUpperCase();
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else {
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text = widget.text;
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}
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});
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super.didUpdateWidget(oldWidget);
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}
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@override
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void initState() {
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hidden = widget.readMore;
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if (widget.style=="overline")
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text = widget.text.toUpperCase();
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else {
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text = widget.text;
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}
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super.initState();
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}
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double _getFontSize () {
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switch (widget.variant) {
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case "heading0":
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return 40.0;
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case "heading":
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return 32.0;
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case "heading2":
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return 28.0;
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case "heading3":
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return 18.0;
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case "body1":
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return 18.0;
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case "body2":
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return 20.0;
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case "body2Link":
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return 16.0;
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case "caption":
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return 16.0;
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case "caption2":
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return 14.0;
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case "bodyText":
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return 15.0;
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case "bodyText2":
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return 17.0;
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case "caption3":
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return 12.0;
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case "caption4":
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return 9.0;
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case "overline":
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return 11.0;
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case "date":
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return 24.0;
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default:
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return 16.0;
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}
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}
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FontWeight _getFontWeight () {
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if (widget.bold ?? false) {
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return FontWeight.w900;
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} else if (widget.regular ?? false) {
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return FontWeight.w500;
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} else if (widget.medium ?? false) {
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return FontWeight.w800;
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}
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else {
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if (widget.style==null) {
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switch (widget.variant) {
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case "heading":
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return FontWeight.w900;
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case "heading2":
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return FontWeight.w900;
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case "heading3":
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return FontWeight.w900;
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case "body1":
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return FontWeight.w800;
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case "body2":
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return FontWeight.w900;
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case "body2Link":
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return FontWeight.w800;
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case "caption":
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return FontWeight.w700;
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case "caption2":
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return FontWeight.w700;
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case "bodyText":
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return FontWeight.w500;
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case "bodyText2":
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return FontWeight.w500;
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case "caption3":
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return FontWeight.w600;
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case "caption4":
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return FontWeight.w600;
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case "overline":
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return FontWeight.w800;
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case "date":
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return FontWeight.w900;
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default:
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return FontWeight.w500;
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}
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} else {
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return null;
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}
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}
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}
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@override
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Widget build(BuildContext context) {
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TextStyle _getFontStyle () {
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switch (widget.style) {
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case "headline2":
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return Theme.of(context).textTheme.headline2;
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case "headline3":
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return Theme.of(context).textTheme.headline3;
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case "headline4":
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return Theme.of(context).textTheme.headline4;
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case "headline5":
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return Theme.of(context).textTheme.headline5;
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case "headline6":
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return Theme.of(context).textTheme.headline6;
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case "bodyText2":
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return Theme.of(context).textTheme.bodyText2;
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case "bodyText_15":
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return Theme.of(context).textTheme.bodyText2.copyWith(fontSize: 15.0);
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case "bodyText1":
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return Theme.of(context).textTheme.bodyText1;
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case "caption":
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return Theme.of(context).textTheme.caption;
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case "overline":
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return Theme.of(context).textTheme.overline;
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case "button":
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return Theme.of(context).textTheme.button;
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default :
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return TextStyle();
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}
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}
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return Column(
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mainAxisAlignment: MainAxisAlignment.center,
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crossAxisAlignment: CrossAxisAlignment.start,
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children: <Widget>[
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Stack(
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children: <Widget>[
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Text(!hidden ? text : (text.substring(0, text.length > widget.maxLength ? widget.maxLength : text.length)),
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textAlign: widget.textAlign,
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overflow: widget.maxLines!=null ? ((widget.maxLines > 1) ? TextOverflow.fade : TextOverflow.ellipsis) : null,
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maxLines: widget.maxLines ?? null,
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style: widget.style != null ? _getFontStyle().copyWith(
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fontStyle: widget.italic ? FontStyle.italic : null,
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color: widget.color!=null ? widget.color : null,
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fontWeight: _getFontWeight(),
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) : TextStyle(
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fontStyle: widget.italic ? FontStyle.italic : null,
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color: widget.color!=null ? widget.color : Colors.black,
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fontSize: _getFontSize(),
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letterSpacing: widget.variant=="overline" ? 1.5 : null,
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fontWeight: _getFontWeight(),
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)
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),
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if (widget.readMore && text.length > widget.maxLength && hidden)
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Positioned(
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bottom: 0,
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left: 0,
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right: 0,
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child: Container(
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decoration: BoxDecoration(
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gradient: LinearGradient(
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colors: [
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Theme.of(context).backgroundColor,
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Theme.of(context).backgroundColor.withOpacity(0),
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],
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begin: Alignment.bottomCenter,
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end: Alignment.topCenter
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)
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),
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height: 30,
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),
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)
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],
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),
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if (widget.allowExpand && widget.readMore && text.length > widget.maxLength)
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Padding(
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padding: EdgeInsets.only(top: 8.0, right: 8.0, bottom: 8.0),
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child: InkWell(
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onTap: () {
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setState(() {
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hidden=!hidden;
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});
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},
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child: Text(hidden ? "Read More" : "Read less",
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style: _getFontStyle().copyWith(
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color: Hexcolor('#FF0000'),
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fontWeight: FontWeight.w800,
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fontFamily: "WorkSans"
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)
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),
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),
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),
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],
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);
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}
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}
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