flutter_sliding_box 1.0.2

A draggable flutter widget that makes it easier to use a sliding box for all platform. Boxes can be customized with your content and placed in your app.

Sliding Box for Flutter

A draggable flutter widget that makes it easier to use a sliding box for all platform. Boxes can be customized with your content and placed in your app.

To see examples of the following SlidingBoxes on the device or simulator:

cd example/
flutter run --release

Demo

Source link	Light	Dark
example/lib/main.dart

Source link	Light	Dark
example/lib/map_screen.dart

Source link	Light	Dark
example/lib/music_player_screen.dart

Source link	Light
example/lib/share_screen.dart

Getting Started

1. Installation
2. Usage
3. Custom Usage
4. Backdrop Usage
5. Backdrop AppBar Usage
6. SearchBox Usage
7. Box Controller
8. Body Builder

Installation

Add flutter_sliding_box as a dependency in your pubspec.yaml file:

dependencies:
  flutter_sliding_box: ^1.0.2

import the plugin package to your dart code

import 'package:flutter_sliding_box/flutter_sliding_box.dart';

Usage

by default use SlidingBox as root widget for body (recommended)

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: SlidingBox(
        context: context,
        body: const Center(
          child: Text("This is the sliding box widget",
            style: TextStyle(color: Colors.black),),
        ),
        backdrop: Backdrop(
          color: Colors.blueGrey,
        ),
      ),
    );
  }

Custom Usage

There are several options that allow for more control:

Properties	Description
body	A widget that slides from minHeight to maxHeight and is placed on the backdrop
bodyBuilder	Provides a ScrollController to attach to a scrollable widget in the box and current box position. If body and bodyBuilder are both non-null, body will be used
context	required context property
controller	It can be used to control the state of sliding box and search box
collapsed	If set to true, the state of the box is collapsed
collapsedBody	The Widget displayed overtop the box when collapsed. This fades out as the sliding box is opened
width	The width of the sliding box
minHeight	The height of the sliding box when fully collapsed
maxHeight	The height of the sliding box when fully opened
color	The color to fill the background of the sliding box
borderRadius	The corners of the sliding box are rounded by this
style	The styles of the sliding box that includes boxShadow and boxUnderBox and none
physics	Gets a ScrollPhysic, the physics determines how the scroll view continues to animate after the user stops dragging the scroll view
draggable	Allows toggling of draggability of the sliding box. Tf set this to false, the sliding box cannot be dragged up or down
draggableIconColor	The color of the draggable icon. the position of the icon is top of the box
draggableIconEnabled	If set to false, the draggable icon hides. Use the controller to open and close sliding box by taps.
draggableIconBackColor	The color to fill the background of the draggable icon. The position of the icon is top of the box
onBoxSlide	This callback is called when the sliding box slides around with position of the box. The position is a double value between 0.0 and 1.0, where 0.0 is fully collapsed and 1.0 is fully opened
onBoxOpen	This callback is called when the sliding box is fully opened
onBoxClose	This callback is called when the sliding box is fully closed
onBoxShow	This callback is called when the sliding box is visible
onBoxHide	This callback is called when the sliding box is invisible
onSearchBoxShow	This callback is called when the search box is visible
onSearchBoxHide	This callback is called when the search box is invisible
animationCurve	The animationCurve defines the easier behavior of the box animation
animationDuration	The animationDuration defines the time for the box animation to complete
backdrop	A Widget that is placed under the box, the value should be filled with the Backdrop object

Backdrop Usage

Using the Backdrop

Manually changing the properties of the Backdrop

Properties	Description
color	The color to fill the background of the backdrop
width	The width of the backdrop body
fading	If set to true, the backdrop body fades out when the sliding box opened
moving	If set to true, the backdrop body moving up when the sliding box opened
overlay	If set to true, a dark layer displayed overtop the backdrop when sliding box is opened
overlayOpacity	The value of the dark layer overtop the backdrop. a double value between 0.0 and 1.0
backgroundGradient	The gradient color to fill the background of the backdrop. if color and backgroundGradient are both non-null, color will be used
body	A Widget that is placed in the backdrop and behind the sliding box
appBar	An app bar to display at the top of the backdrop

SlidingBox includes appBar: BackdropAppBar

  BoxController boxController = new BoxController();

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: SlidingBox(
        context: context,
        controller: boxController,
        minHeight: 200,
        maxHeight: 400,
        body: Center(
          child: Text("This is the sliding box widget",
            style: TextStyle(color: Colors.black),),
        ),
        backdrop: Backdrop(
          color: Colors.blueGrey,
          appBar: BackdropAppBar(
            title: Padding(
                padding: EdgeInsets.all(10),
                child: Text("AppBar", style: TextStyle(fontSize: 20),)
            ),
            leading: Icon(Icons.menu, color: Colors.white, size: 27,),
          ),
        ),
      ),
    );
  }

Backdrop AppBar Usage

Using the BackdropAppBar

Manually changing the properties of the BackdropAppBar

Properties	Description
title	A Widget that is placed on the topLeft of the backdrop
leading	A Icon Widget that is placed in left of the title
decoration	The decoration to paint behind the child
searchBox	An search box to display at the top of the backdrop. If non-null, an search Icon displayed on topRight of the backdrop

SlidingBox appBar includes searchBox: SearchBox

  BoxController boxController = BoxController();
  TextEditingController textEditingController = TextEditingController();

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: SlidingBox(
        context: context,
        controller: boxController,
        minHeight: 200,
        maxHeight: MediaQuery.of(context).size.height - 100,
        body: Center(
          child: Text("This is the sliding box widget",
            style: TextStyle(color: Colors.black),),
        ),
        backdrop: Backdrop(
          color: Colors.blueGrey,
          appBar: BackdropAppBar(
            title: Padding(
                padding: EdgeInsets.all(10),
                child: Text("AppBar", style: TextStyle(fontSize: 20),)
            ),
            leading: Icon(Icons.menu, color: Colors.white, size: 27,),
            searchBox: SearchBox(
              controller: textEditingController,
              icon: Icon(Icons.search, color: Colors.white, size: 27,),
              body: Center(
                child: Text("This is the search box body widget",
                  style: TextStyle(color: Colors.black),
                ),
              ),
            ),
          ),
        ),
      ),
    );
  }

SearchBox Usage

Using the SearchBox

Manually changing the properties of the SearchBox

Properties	Description
controller	It can be used to control the state of search box text field. Gets a TextEditingController
icon	A Widget that is placed in topRight of the backdrop app bar
leading	A Icon Widget that is placed in left of the search box text field
color	The color to fill the background of the search box and text field
inputDecoration	The decoration to show around the search box text field
borderRadius	The corners of the search box are rounded by this
style	The style to use for the text being edited
body	A Widget that is placed in the sliding box and under the searching box
draggableBody	Allows toggling of draggability of the sliding box. if set this to false, the sliding box cannot be dragged up or down when search box visible. If set this to true, search box invisible when dragging

SlidingBox backdrop includes overlay: true

you can customize overlayOpacity (a value between 0.0 and 1.0), default value is 0.5

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: SlidingBox(
        context: context,
        body: const Center(
          child: Text("This is the sliding box widget",
            style: TextStyle(color: Colors.black),
          ),
        ),
        backdrop: Backdrop(
          overlay: true,
          overlayOpacity: 0.5,
          color: Colors.grey,
        ),
      ),
    );
  }

SlidingBox backdrop width and body width

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: SlidingBox(
        context: context,
        width: MediaQuery.of(context).size.width - 50,
        minHeight: 200,
        maxHeight: 400,
        body: Center(
          child: Text("This is the sliding box widget",
           style: TextStyle(color: Colors.black),),
        ),
        backdrop: Backdrop(
          width: MediaQuery.of(context).size.width - 100,
          color: Colors.blueGrey,
        ),
      ),
    );
  }

SlidingBox includes style: boxUnderBox or boxShadow

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: SlidingBox(
        context: context,
        minHeight: 200,
        maxHeight: 400,
        style: BoxStyle.boxUnderBox, // or BoxStyle.boxShadow
        body: Center(
          child: Text("This is the sliding box widget",
            style: TextStyle(color: Colors.black),),
        ),
        backdrop: Backdrop(
          color: Colors.blueGrey,
        ),
      ),
    );
  }

Box Controller

Using the BoxController

Manually changing the state of the SlidingBox. For better performance, use a BoxController as controller (recommended).

Properties	Data Type	Description
isAttached	bool	Determine if the boxController is attached to an instance of the SlidingBox (this property must be true before any other BoxController functions can be used)
isBoxOpen	bool	Returns whether or not the box is open
isBoxClosed	bool	Returns whether or not the box is close
isBoxVisible	bool	Returns whether or not the box is visible
getPosition	bool	Returns current box position (a value between 0.0 and 1.0)
minHeight	double	Returns current box minHeight
maxHeight	double	Returns current box maxHeight
boxWidth	double	Returns current box width
backdropWidth	double	Returns current backdrop width

Methods	Return Type	Description
openBox()	Future<void>	Opens the sliding box with animation (i.e. to the maxHeight)
closeBox()	Future<void>	Closes the sliding box with animation (i.e. to the minHeight)
showBox()	Future<void>	Shows the sliding box (i.e. is visible)
hideBox()	Future<void>	Hides the sliding box (i.e. is invisible)
showSearchBox()	Future<void>	Shows the search box (i.e. is visible)
hideSearchBox()	Future<void>	Hides the search box (i.e. is invisible)
setPosition()	Future<void>	Sets the sliding box position with animation (a value between 0.0 and 1.0)
setSearchBody()	Future<void>	Sets the search box body content

  BoxController boxController = new BoxController();
  
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: SlidingBox(
        context: context,
        controller: boxController,
        minHeight: 200,
        maxHeight: 400,
        body: Center(
          child: Text("This is the sliding box widget",
            style: TextStyle(color: Colors.black),),
        ),
        backdrop: Backdrop(
          color: Colors.blueGrey,
          body: Container(
            width: MediaQuery.of(context).size.height,
            child: Column(
              mainAxisAlignment: MainAxisAlignment.center,
              children: <Widget>[
                MaterialButton(
                  child: Text("Open"),
                  onPressed: () => boxController.openBox(),
                  color: Colors.white,
                ),
                MaterialButton(
                  child: Text("Close"),
                  onPressed: () => boxController.closeBox(),
                  color: Colors.white,
                ),
                MaterialButton(
                  child: Text("Show"),
                  onPressed: () => boxController.showBox(),
                  color: Colors.white,
                ),
                MaterialButton(
                  child: Text("Hide"),
                  onPressed: () => boxController.hideBox(),
                  color: Colors.white,
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }

Body Builder

Using the bodyBuilder

When content overflow in body widget, scroll enable automatically, and you can using the body builder to manage and control scroll and box position.

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: SlidingBox(
        context: context,
        minHeight: 200,
        maxHeight: 400,
        bodyBuilder: (sc, pos) => _body(sc, pos),
        backdrop: Backdrop(
           color: Colors.blueGrey,
        ),
      ),
    );
  }
 
  _body(ScrollController sc, double pos) {
     sc.addListener(() {
       print("scrollController position: ${sc.position.pixels}");
     });
     return Column(
       children: [
         SizedBox(height: 10,),
         Center(
           child: Text("box position: $pos",
              style: TextStyle(color: Colors.black),),
         ),
         SizedBox(height: 10,),
         Container(color: Colors.grey, height: 100,),
         SizedBox(height: 10,),
         Container(color: Colors.grey, height: 100,),
         SizedBox(height: 10,),
         Container(color: Colors.grey, height: 100,),
         SizedBox(height: 10,),
         Container(color: Colors.grey, height: 100,),
       ],
     );
  }