magnifying_glass

Description:

magnifying glass

MagnifyingGlass Flutter plugin #
Flutter real-time magnifying glass lens widget with Barrel/Pincushion distortion.


Getting Started #
Make [MagnifyingGlass] widget as the parent of the widget you wish to be used (usually MyHomePage).
@override
Widget build(BuildContext context) {
MagnifyingGlassController magnifyingGlassController = MagnifyingGlassController();
return MagnifyingGlass(
controller: magnifyingGlassController,
glassPosition: GlassPosition.touchPosition,
borderThickness: 8.0,
borderColor: Colors.grey,
glassParams: GlassParams(
startingPosition: Offset(150, 150),
diameter: 150,
distortion: 1.0,
magnification: 1.2,
padding: EdgeInsets.all(10),
),
child: Scaffold(
body: ...,

floatingActionButton: FloatingActionButton(
onPressed: () => magnifyingGlassController.openGlass(),
child: const Icon(Icons.search),
),
)
);
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MagnifyingGlass properties #



Name
Type
Description




controller
MagnifyingGlassController
Let you control the glass state and parameters: openGlass()closeGlass()setDistortion( double distortion, double magnification )setDiameter( int diameter )refresh()


glassPosition
enum
enum to set the touch behavior or sticky position


glassParams
GlassParams
class to set lens parameters


borderColor
Color
border color


borderThickness
double
border thickness


elevation
double
shadow elevation


shadowOffset
Offset
shadow offset




GlassPosition class



Name
Description




touchPosition
move the glass with finger touch


topLeft
sticky position to top left corner of the screen


topRight
sticky position to top rigth corner of the screen


bottomLeft
sticky position to bottom left corner of the screen


bottomRight
sticky position to bottom right corner of the screen




GlassParams class



Name
Description




startingPosition
the startin glass position. If not given the lens will be placed at the center of the screen.


diameter
the diameter of the glass


magnification
the magnification of the lens1 means no magnification>1 means magnification<1 means shrinking


distortion
Barrel/Pincushion distortion power0 means no distortion


padding
the padding surrounding the glass to enlarge touching area













distorsion 0.5 mag 1.0
distorsion 0.5 mag 1.4
distorsion 2.0 mag 1.7