sura_flutter

a flutter package from asurraa for widgets and utility functions.

migrate from 2.x to 3.x

• breaking change:
  • remove futuremanager, asyncsubjectmanager, futuremanagerbuilder
  • all manager class now has a separate package

  dependencies:
    sura_manager: any
  

installation

add this to pubspec.yaml

dependencies:
  sura_flutter: ^0.4.2

widgets

widget	description
suraraisedbutton	custom elevatedbutton with loading notifier
surabadge	small badge like notification
suraactionsheet	custom cupertinoactionsheet for option selector
conditionalwidget	build a widget base on a boolean condition
suratoolbar	custom toolbar or appbar
surafuturehandler	futurebuilder with less boilerplate code
suraaccordian	custom expansiontile
suraexpandable	similar to suraaccordion but with different use case
suraconfirmationdialog	platform adaptive alertdialog with cancel and confirm action
suraasyncbutton	fully customize material elevatedbutton for asynchronus onpressed callback
suraloadingdialog	create and manage loading dialog
suraplatformchecker	platform adaptive widget
surasimpledialog	simple platform adaptive alertdialog
suralisttile	custom listtile
surapaginatedlist	listview with pagination support
surapaginatedgridbuilder	gridview with pagination support
suraiconbutton	custom iconbutton
suraflatbutton	cusztom textbutton or flatbutton
spacex	sizedbox with only width
spacey	sizedbox with only height
surastreamhandler	a streambuilder with less boilerplate code
suranotifier	a valuelistenablebuilder with less boilerplate code

mixin

afterbuildmixin

create an override method that will call after the build method has been called

class _homepagestate extends state<newpage> with afterbuildmixin {

  //this method will call after widget has been build
  @override
  void afterbuild(buildcontext context) {

  }

  @override
  widget build(buildcontext context) {
    return container();
  }
}

suraformmixin

provide some property and method when working with form

field and attribute

• formkey: a key for form
• loadingnotifier: a bool valuenotifier
• passwordobsecurenotifier: a bool valuenotitifer for toggling password obsecure field
• isformvalidated: a bool return by validate formkey

method

• toggleloading: toggle loadingnotifier
• togglepasswordobsecure: toggle passwordobsecurenotifier

class _homepagestate extends state<newpage> with suraformmixin {
  @override
  widget build(buildcontext context) {
    return scaffold(
      body: form(key: formkey, child: child)
    );
  }
}

boolnotifiermixin

provider a valuenotifier<bool> and a value toggle function

• boolnotifier: a bool valuenotifier

method

• togglevalue: toggle loadingnotifier

class _homepagestate extends state`<newpage>` with boolnotifiermixin {
  @override
  widget build(buildcontext context) {
    return container();
  }
}

widget’s extension

padding, margin

text("hello flutter").padding(edgeinsets.all(16.0)) // defaulat value is edgeinsets.all(8.0)
text("hello flutter").margin(edgeinsets.all(16.0)) // defaulat value is edgeinsets.all(8.0)
///as a value
text("hello flutter").marginvalue(all: 12)
text("hello flutter").paddingvalue(horizontal: 12, vertical: 8)

cssspacing

text("hello flutter").cssspacing(margin: [10,10], padding:[16])
//css margin and padding rule

rotate (in degree)

text("hello flutter").rotate(45)

flexible, expanded, clipoval, opacity

text("hello flutter").flexible
text("hello flutter").expanded
text("hello flutter").clipoval
text("hello flutter").opacity(0.5)

textstyle extention

text("hello flutter", style: textstyle().normal)
text("hello flutter", style: textstyle().medium)
text("hello flutter", style: textstyle().bold)
text("hello flutter", style: textstyle().applycolor(colors.white))
text("hello flutter", style: textstyle().applfontsize(24))

other extension

buildcontext extension

  size screensize = context.screensize;
  color primarycolor = context.primarycolor;
  color accentcolor = context.accentcolor;
  texttheme texttheme = context.texttheme;
  theme theme = context.theme;

datetime extension

datetime.now().format(format: "dd mmm yyyy", locale: context.locale)
datetime.now().isthesameday(datetime.now())
datetime.now().formattolocaldate(format: "dd mmm yyyy", locale: context.locale)

string extension

string name = "chunlee".capitalize() // => chunlee

utility and style

dottabindicator

  tabbar(
      ...
      indicator: dottabindicator(
        color: colors.blue,
        dotalignment: tabalignment.bottom,
      )
      ...
  )

smallunderlinetabindicator

  tabbar(
      ...
      isscrollable: true, //this indicator work best with scrollable tab bar
      indicator: smallunderlinetabindicator(
        color: colors.blue,
        paddingleft: 16,
        alignment: tabalignment.bottom,
      )
      ...
  )

shadowinputborder

this input border solve a problem thath textfield doesn’t have a default elevation.

  textformfield(
      ...
      decoration: inputdecoration(
        border: shadowinputborder(
          elevation: 2.0, //required
          fillcolor: colors.white, //required
          borderradius: sraustyle.radius(),
          shadowcolor: colors.black87,
        ),

      )
      ...
  )

suracolor

//get color from hex string
color green = suracolor.fromcode("42f545")

//get color from rgb without alpha or opacity
color newcolor = suracolor.fromrgb(8, 182, 155)

//convert color to materialcolor
materilcolor newmaterialcolor = suracolor.tomaterial(0xff869cf4)

surautils

//get byte from asset bundle
future`<uint8list>` imagebyte = await surautils.getbytesfromasset("image asset path", 200); //200 is imagewidth

//get random image from unsplash
string carurlimage =  surautils.unsplashimage(width: 200, height: 200, category: "car");

//get random from picsum with provided: width and height
string randomurlimage = surautils.picsumimage(200,300);

suraformvalidator

provide some field validation

textformfield(
validator: (value) => suraformvalidator.validatefield(value, field:"username"),
)

pagenavigator and suranavigator

pagenavigator support push, pushreplacement and pushandremove method

pagenavigator.push(context, detailpage());
pagenavigator.pushreplacement(context, homepage());
pagenavigator.pushandremove(context, rootpage());

suranavigator also support push, pushreplacement, pushandremove without providing a context but you need to add suranavigator.navigatorkey to materialapp

materialapp(
    ...
    navigatorkey: suranavigator.navigatorkey,
    ...
    home: myhomepage(),
)

suranavigator.push(detailpage());
suranavigator.pushreplacement(homepage());
suranavigator.pushandremove(rootpage());

suranavigator also can show dialog without providing a context

var result = await suranavigator.dialog(mydialog());

suradecoration

roundedrectangleborder roundrectangle = suradecoration.roundrect(12);//default value is 8
borderradius radius = suradecoration.radius(12); //default value is 8