FSuper

FSuper can help developers build complex views quickly and comfortably.

It supports rich text, rounded corners, borders, pictures, small red dots, and set up to two sub-components at the same time, and control their relative positions.

Author：Newton(coorchice.cb@alibaba-inc.com)

English | 简体中文

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✨ Features

• Rich corner effect
• Exquisite border decoration
• Naturally supports wonderful rich text
• Gradient effect
• More sense of space Shadow
• Not simple Red Point
• Flexible and powerful relative layout

???? Guide

⚙️ Parameters

???? Basic parameters

Param	Type	Necessary	Default	desc
width	double	false	null	width
height	double	false	null	height. can not be double.infinity
maxWidth	double	false	null	maxWidth. If width> maxWidth, width is overridden. If there is no width, the maximum expanded width is maxWidth
maxHeight	double	false	null	maxHeight. If height> maxHeight, height is overridden. If there is no height, the maximum extension width is maxHeight
backgroundColor	Color	false	null	background color
backgroundImage	ImageProvider	false	null	Background illustration. Overrides backgroundColor and gradient
gradient	Gradient	false	null	Gradient. Will be overwriting backgroundColor
padding	EdgeInsetsGeometry	false	null	Text and margins on each side. This is very useful to reserve space for children in FSuper
margin	EdgeInsets	false	null	FSuper margins in parent container
corner	Corner	false	null	Corner size
cornerStyle	CornerStyle	false	CornerStyle.round	Corner style. Rounded by default, set CornerStyle.bevel to bevel
text	String	false	null	Text content
textColor	Color	false	null	Font color
textSize	double	false	null	Font size
textStyle	FontStyle	false	null	Font style
textWeight	FontWeight	false	null	Font style
fontHeight	double	false	null	Height of a line of text = textSize * fontHeight
textAlign	TextAlign	false	TextAlign.center	Text alignment
spans	List	false	null	Rich text. After receiving text, the text configuration will be inherited by default. Can be set individually via TextStyle
onClick	GestureTapCallback	false	null	Set FSuper click listener

???? Child Widget Parameters

Param	Type	Necessary	Default	desc
child1	Widget	false	null	child widget 1
child1Alignment	Alignment	false	null	Relative position of child widget 1 in FSuper
child1Margin	EdgeInsets	false	null	child widget 1 relative position based offset
onChild1Click	GestureTapCallback	false	null	Click listener of child widget 1
child2	Widget	false	null	child widget 2
child2Alignment	Alignment	false	null	Relative position of child widget 2 in FSuper
child2Margin	EdgeInsets	false	null	child widget 2 relative position based offset
onChi2d1Click	GestureTapCallback	false	null	Click listener of child widget 2

???? Red Point Parameters

Param	Type	Necessary	Default	desc
redPoint	bool	false	false	Whether to show the Red Point
redPointColor	Color	false	Colors.redAccent	The Red Point color
redPointSize	double	false	20	The Red Point size
redPointText	String	false	null	text on Red Point
redPointTextColor	Color	false	null	Text color on Red Point
redPointTextSize	double	false	null	Text font size on Red Point
redPointOffset	Offset	false	null	The Red Point shifts to the upper right. The Red Point of Offset (0,0) is in the upper right corner of FSuper. By default, the Red Point is shifted to the upper right by 1/4

???? Stroke Parameters

Param	Type	Necessary	Default	desc
strokeWidth	double	false	null	Border width. > 0 border will be displayed
strokeColor	Color	false	null	边框颜色

???? Shadow Parameters

Param	Type	Necessary	Default	desc
shadowColor	Color	false	null	Shadow color
shadowOffset	Offset	false	null	Shadow offset
shadowBlur	double	false	null	The larger the value, the larger the shadow

???? Demo

???? Basic Demo

FSuper(
  margin: EdgeInsets.fromLTRB(12, 0, 12, 0),
  width: double.infinity,
  text: "This is FSuper!",
  backgroundColor: Color(0xffffc900),
),


FSuper(
  text: "En.. ",
  spans: [
    TextSpan(
        text: "FWidget",
        style: TextStyle(
          color: Color(0xffffc900),
          backgroundColor: Colors.black38,
          fontSize: 20,
        )),
  ...
  ],
),

FSuper The first part of the text is set through the text property, and related text style properties can be set. If you want to achieve rich text effects, you can pass a TextSpan array via the spans property.

Of course, by default, the properties you have not set for TextSpan will automatically inherit the text style configuration of FSuper.

By default, FSuper is able to adapt the text content size.

But you can still specify a specific size through the width, height properties. If you want the parent container to be full of components, you can set their value to double.infinity.

⚠️ You should never set the size of FSuper to double.infinity in an infinite parent container, because it really does not know how big it should be!

In addition, FSuper also provides maxWidth and maxHeight to assist in layout, which is useful in the case of an uncertain component size. Your components will never exceed their limits.

???? Corner & Stroke Demo

FSuper(
  width: 130,
  padding: EdgeInsets.only(top: 16, bottom: 16)
  text: 'Corner FSuper',
  backgroundColor: Color(0xffFF7043),
  corner: Corner.all(12),
  cornerStyle: CornerStyle.bevel,
),

FSuper(
  text: '音乐类型:流行音乐',
  textColor: Color(0xffc2bfc2),
  padding: EdgeInsets.all(2),
  corner: Corner.all(3),
  strokeColor: Color(0xffc2bfc2),
  strokeWidth: 1,
),

Using FSuper to declare a corner and border component is very simple.

Corners can be declared just by the corner property. A Corner object will describe the corners of the component. You can control each corner individually.

FSuper supports two types of corners:

• CornerStyle.round：Rounded corners. This is what we need most of the time.
• CornerStyle.bevel：bevel corners.

If you want a border, you only need to make StrokeWidth> 0 of FSuper. In addition, the strokeColor property allows you to describe the color of the border.

???? Gradient & Shadow Demo

FSuper(
  width: 280,
  height: 45,
  text: 'Search Flight',
  textAlignment: Alignment.center,
  textSize: 16,
  textColor: Color(0xff333333),
  corner: Corner.all(23),
  gradient: LinearGradient(colors: [
    Color(0xfffed83a),
    Color(0xfffcad2c),
  ]),
),

The gradient property allows you to declare a gradient background for FSuper using a gradient object.

The gradient background will override the solid background color set by backgroundColor.

⚠️ Background priority：backgroundImage > gradient > backgroundColor.

FSuper(
  text: 'Overview',
  backgroundColor: Colors.white,
  padding: EdgeInsets.fromLTRB(6.0 + 18.0 + 6.0, 9, 9, 9),
  corner: Corner(rightTopCorner: 20, rightBottomCorner: 20),
  child1: Icon(
    Icons.subject,
    size: 18,
    color: Color(0xffa6a4a7),
  ),
  child1Alignment: Alignment.centerLeft,
  child1Margin: EdgeInsets.only(left: 3),
  shadowColor: Colors.black38,
  shadowBlur: 10,
  onClick: () {
    _showDialog(context, "Disco");
  },
),

If you are considering adding shadow effects to your components, using FSuper is a great choice.

???? Red Point Demo

FSuper(
  width: 60,
  height: 60,
  backgroundColor: Color(0xffeeeeee),
  corner: Corner.all(6),
  redPoint: true,
  redPointSize: 20,
  redPointText: "红包",
),

Using FSuper can be very simple to achieve the common Red Point effect. Just configure redPoint: true.

In addition, you can add arbitrary text content to the Red Point (it is really convenient) and set its position.

⚠️ The (0,0) position of the Red Point is in the upper right corner of FSuper.

One-stop service to meet all your needs.

???? Child Widget

FSuper(
    width: double.infinity,
    padding: EdgeInsets.fromLTRB(
        (16.0 + 25.0 + 12), 8, (0.0 + 8.0), 8),
    margin: EdgeInsets.fromLTRB(10, 10, 10, 0),
    corner: Corner.all(6),
    backgroundColor: Color(0xfffff0e7),
    strokeColor: Color(0xfffee0cd),
    strokeWidth: 1,
    text: '警告提示的文案',
    textColor: Color(0xff7e7c7a),
    textAlignment: Alignment.centerLeft,
    textAlign: TextAlign.left,
    spans: [
      ...
    ],
    child1: Transform.rotate(
      angle: pi,
      child: Icon(
        Icons.info,
        size: 25,
        color: Color(0xfffd6721),
      ),
    ),
    child1Alignment: Alignment.centerLeft,
    child1Margin: EdgeInsets.fromLTRB(16, 0, 0, 0),
    child2: Icon(
      Icons.close,
      size: 15,
      color: Colors.black38,
    ),
    child2Alignment: Alignment.topRight,
    child2Margin: EdgeInsets.fromLTRB(0, 8, 12, 0),
    onChild2Click: () {
      _showDialog(context, "关闭警告⚠️");
    },
  ),

In FSuper, two child components can be declared by child1, child2. You can specify their location and declare a click event.

This will greatly increase development speed in some common and complex layouts. Especially in the scenario where the size of one component is small and uncertain, and the other component determines the position based on its size, FSuper handles everything.

The effects of these components in the picture only need one FSuper component to complete.

???? More Demo

Do not be surprised, the effects in the figure are all achieved with FSuper.

The design of the sub-components makes FSuper a qualitative leap in flexibility, and most of the complex views are capable.

For example, the chat bubble in the picture does not need to use the background picture, just use FSuper to achieve it. This makes such components extremely flexible and easy to modify.

FSuper(
  maxWidth: 220,
  textAlign: TextAlign.left,
  text: "I'm created by FSuper ????",
  padding: EdgeInsets.only(
      left: 12, right: 12, top: 15, bottom: 15),
  backgroundColor: Color(0xffa5ed7e),
  corner: Corner.all(6),
  child1: Transform.rotate(
    angle: pi / 4,
    child: FSuper(
      width: 10,
      height: 10,
      backgroundColor: Color(0xffa5ed7e),
      corner: Corner.all(1.5),
    ),
  ),
  child1Alignment: Alignment.topRight,
  child1Margin: EdgeInsets.only(right: -4, top: 20),
  shadowColor: Color(0xffa5ed7e),
  shadowBlur: 5,
),

???? How to use？

Add dependency in project pubspec.yaml file:

???? pub dependency

dependencies:
  fsuper: ^<version number>

⚠️ Attention, please go to pub to get the latest version number of FSuper

???? git dependencies

dependencies:
  fsuper:
    git:
      url: 'git@github.com:Fliggy-Android-Team/fsuper.git'
      ref: '<Branch number or tag number>'

⚠️ Attention，Please refer to the official project of FSuper for the branch number or tag.

???? License

Copyright 2020-present Fliggy Android Team <alitrip_android@list.alibaba-inc.com>.

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 following link.

    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.

Download FSuper source code on GitHub

https://github.com/Fliggy-Android-Team/fsuper