zoomer 0.0.4

Zoomer Widget To Create Zoomable Child Widget. You Can Optionaly Translate or Rotate It. Zoomer Can Controlled By ZoomerController. Can Get/Set Properties of scale,offset,rotation. can Give Callbacks [...]

zoomer

Zoomer - To Zoom Any Widget

preview

What It Can Do?

• Zoom
• Rotate
• Translate

Installation

Follow Installation guide of Pub.dev

Syntax

1. Zoomer Class

    Zoomer(
        {this.child,                    // Child Can Be Any Widget, you want to make zoomable
        this.controller,                // ZoomerControoller To Control Zoomer
        this.height,                    // Height
        this.width,                     // Width 
        this.background,                // background of Zoomer. It is BoxDecoration.
        this.maxScale = 2.0,            // maximum Scale
        this.minScale = 0.5,            // mininum Scale
        this.enableTranslation = false, // Want to move it by touch
        this.enableRotation = false,    // Want to rotate it
        this.clipRotation = true});     // Clips the Rotation to 90-degrees
   

2. ZoomerController Class

      ZoomerController({initialScale = 1.0})  //To Set initial Scale
   

   • APIs

     • double get scale
       scale = _controller.scale

     • set setScale(double value)
       _controller.setScale = 1.5

     • Offset get offset
       offset = _controller.offset

     • set setOffset(Offset value)
       _controller.setOffset = Offset(0,10)

     • double get rotation
       rotation = _controller.rotation

     • set setRotation(double value)
       _controller.setRotation = pi/4 Note: Rotation is in Radians

     • onZoomStart()
       _controller.onZoomStart( (){ print( _controller.scale ); } )

     • onZoomUpdate()
       _controller.onZoomUpdate( (){ print( _controller.scale ); } )

     • onZoomEnd()
       _controller.onZoomEnd( (){ print( _controller.scale ); } )

Example

  ZoomerController _zoomerController = ZoomerController(initialScale: 1.0);
  String _zoomDetails = "Zoom";  

  @override
  Widget build(BuildContext context) {

    _zoomerController.onZoomUpdate((){
      setState(() {
        _zoomDetails = "Scale = "+ _zoomerController.scale.toStringAsFixed(2);
        _zoomDetails += "\nRotation = "+ _zoomerController.rotation.toStringAsFixed(2);
        _zoomDetails += "\nOffset = ("+ _zoomerController.offset.dx.toStringAsFixed(2)+","+_zoomerController.offset.dy.toStringAsFixed(2)+")";
      });
    });

    return Scaffold(
      appBar: AppBar(title: Text("Zommer Example"),),
      body:
        Center(child:
        Stack(
          children: [
            Align(alignment: Alignment.topCenter,child: SizedBox(height: 150,child: Text(_zoomDetails,textAlign: TextAlign.center,style: TextStyle(fontSize: 30),))),
            Center(
              child: 
                Zoomer(
                  enableTranslation: true,
                  enableRotation: true,
                  clipRotation: true,
                  maxScale: 2,
                  minScale: 0.5,
                  background:BoxDecoration(color: Colors.white),
                  height: 300,
                  width: 300,
                  controller: _zoomerController,
                  child: Container(decoration: BoxDecoration(color: Colors.green),height: 200,width: 200,child: FlutterLogo(),)),
            ),
          ])),
    );
  }
}

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