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theyakka / qr.flutter

QR.Flutter is a Flutter library for simple and fast QR code rendering via a Widget or custom painter.
https://pub.dev/packages/qr_flutter
BSD 3-Clause "New" or "Revised" License
718 stars 323 forks source link

Export Custom Shape QR Code #189

Open ashishCodixel opened 2 years ago

ashishCodixel commented 2 years ago

I have generated custom eyeModule shape and eyeModule dot shape, then after when i am trying to download that generated QR code using image data with size of 1024 , downloaded image from image bytes is ruined. i am not getting perfect readable QRcode but in the flutter ui with help of widget qr code is perfect readable. Below are the code for generate and export.

Code for UI

final appearance = QrAppearance(
          gapSize: 1,
          moduleStyle: QrDataModuleStyle(
            colors: QrColors.random([
              const Color(0xFF000000),
              // const Color(0xFF008253),
              // const Color(0xFF2AB689),
              // const Color(0xFF7BD4AB),
            ]),
            shape: QrDataModuleShape.beakSquare,

          ),
          markerStyle: const QrMarkerStyle(
            color: Color(0xFF000000),
            shape: QrMarkerShape.pencilSketch,
            gap: 2,
          ),
          markerDotStyle: const QrMarkerDotStyle(
            color: Color(0xFF000000),
            shape: QrMarkerDotShape.pencilSketch,
          ),
          embeddedImageStyle: const QrEmbeddedImageStyle(
            size: Size.square(72),
            drawOverModules: false,
          ),
        );

Code for export

_painter = QrPainter(
          data: codeMessage,
          version: QrVersions.auto,
          errorCorrectionLevel: QrErrorCorrectLevel.M,
          embeddedImage: snapshot.data,
          appearance: appearance,
        );
      imageData = await _painter.toImageData(1024,format: ImageByteFormat.png);

Code for Custom Shape added custome shape in qr_painter.dart file

else if(dotStyle.shape == QrMarkerDotShape.pencilSketch){
        final mPointLeft = (markerOffset.dx - 3) + metrics.pixelSize + strokeAdjust;
        final mPointTop = (markerOffset.dy - 3) + metrics.pixelSize + strokeAdjust;
        Size mSize = Size(radius - 30, radius - 30);

        Path path_1 = Path();
        path_1.moveTo(mSize.width*0.05580000 + mPointLeft,mSize.height*0.9972000 + mPointTop);
        path_1.lineTo(mSize.width*0.005250000 + mPointLeft,mSize.height*0.9999500 + mPointTop);
        path_1.lineTo(mSize.width*0.005000000 + mPointLeft,mSize.height*0.9999500 + mPointTop);
        path_1.lineTo(mSize.width*0.004650000 + mPointLeft,mSize.height + mPointTop);
        path_1.lineTo(0 + mPointLeft,mSize.height*0.9619000 + mPointTop);
        path_1.lineTo(mSize.width*0.01085000 + mPointLeft,mSize.height*0.9238500 + mPointTop);
        path_1.lineTo(mSize.width*0.001550000 + mPointLeft,mSize.height*0.8857500 + mPointTop);
        path_1.lineTo(mSize.width*0.001550000 + mPointLeft,mSize.height*0.8477000 + mPointTop);
        path_1.lineTo(0 + mPointLeft,mSize.height*0.8096000 + mPointTop);
        path_1.lineTo(mSize.width*0.006200000 + mPointLeft,mSize.height*0.7715000 + mPointTop);
        path_1.lineTo(0 + mPointLeft,mSize.height*0.7335000 + mPointTop);
        path_1.lineTo(mSize.width*0.001550000 + mPointLeft,mSize.height*0.6954000 + mPointTop);
        path_1.lineTo(mSize.width*0.007750000 + mPointLeft,mSize.height*0.6573500 + mPointTop);
        path_1.lineTo(mSize.width*0.004650000 + mPointLeft,mSize.height*0.6192500 + mPointTop);
        path_1.lineTo(mSize.width*0.003100000 + mPointLeft,mSize.height*0.5811500 + mPointTop);
        path_1.lineTo(mSize.width*0.01705000 + mPointLeft,mSize.height*0.5431000 + mPointTop);
        path_1.lineTo(mSize.width*0.007750000 + mPointLeft,mSize.height*0.5050000 + mPointTop);
        path_1.lineTo(mSize.width*0.003100000 + mPointLeft,mSize.height*0.4669000 + mPointTop);
        path_1.lineTo(mSize.width*0.006200000 + mPointLeft,mSize.height*0.4288500 + mPointTop);
        path_1.lineTo(mSize.width*0.003100000 + mPointLeft,mSize.height*0.3907500 + mPointTop);
        path_1.lineTo(mSize.width*0.01085000 + mPointLeft,mSize.height*0.3541000 + mPointTop);
        path_1.lineTo(mSize.width*0.009300000 + mPointLeft,mSize.height*0.3160000 + mPointTop);
        path_1.lineTo(mSize.width*0.01550000 + mPointLeft,mSize.height*0.2398500 + mPointTop);
        path_1.lineTo(mSize.width*0.001550000 + mPointLeft,mSize.height*0.2017500 + mPointTop);
        path_1.lineTo(mSize.width*0.009300000 + mPointLeft,mSize.height*0.1637000 + mPointTop);
        path_1.lineTo(mSize.width*0.003100000 + mPointLeft,mSize.height*0.1256000 + mPointTop);
        path_1.lineTo(mSize.width*0.01085000 + mPointLeft,mSize.height*0.08190000 + mPointTop);
        path_1.lineTo(mSize.width*0.007750000 + mPointLeft,mSize.height*0.05370000 + mPointTop);
        path_1.lineTo(mSize.width*0.004800000 + mPointLeft,mSize.height*0.03370000 + mPointTop);
        path_1.lineTo(0 + mPointLeft,mSize.height*0.003050000 + mPointTop);
        path_1.lineTo(mSize.width*0.03830000 + mPointLeft,mSize.height*0.004550000 + mPointTop);
        path_1.lineTo(mSize.width*0.07665000 + mPointLeft,mSize.height*0.01075000 + mPointTop);
        path_1.lineTo(mSize.width*0.1131500 + mPointLeft,mSize.height*0.01075000 + mPointTop);
        path_1.lineTo(mSize.width*0.1518500 + mPointLeft,mSize.height*0.007650000 + mPointTop);
        path_1.lineTo(mSize.width*0.1902000 + mPointLeft,mSize.height*0.007650000 + mPointTop);
        path_1.lineTo(mSize.width*0.2285000 + mPointLeft,mSize.height*0.01700000 + mPointTop);
        path_1.lineTo(mSize.width*0.2668500 + mPointLeft,mSize.height*0.006200000 + mPointTop);
        path_1.lineTo(mSize.width*0.3051500 + mPointLeft,mSize.height*0.01085000 + mPointTop);
        path_1.lineTo(mSize.width*0.3434500 + mPointLeft,mSize.height*0.001600000 + mPointTop);
        path_1.lineTo(mSize.width*0.3818000 + mPointLeft,mSize.height*0.003100000 + mPointTop);
        path_1.lineTo(mSize.width*0.4201000 + mPointLeft,mSize.height*0.01390000 + mPointTop);
        path_1.lineTo(mSize.width*0.4584500 + mPointLeft,mSize.height*0.01700000 + mPointTop);
        path_1.lineTo(mSize.width*0.4953500 + mPointLeft,mSize.height*0.01550000 + mPointTop);
        path_1.lineTo(mSize.width*0.5720000 + mPointLeft,mSize.height*0.006100000 + mPointTop);
        path_1.lineTo(mSize.width*0.6103000 + mPointLeft,mSize.height*0.004600000 + mPointTop);
        path_1.lineTo(mSize.width*0.6486000 + mPointLeft,mSize.height*-0.00005000000 + mPointTop);
        path_1.lineTo(mSize.width*0.6869500 + mPointLeft,mSize.height*0.006100000 + mPointTop);
        path_1.lineTo(mSize.width*0.7252500 + mPointLeft,mSize.height*0.006100000 + mPointTop);
        path_1.lineTo(mSize.width*0.7636000 + mPointLeft,mSize.height*0.01535000 + mPointTop);
        path_1.lineTo(mSize.width*0.8019000 + mPointLeft,mSize.height*0.003050000 + mPointTop);
        path_1.lineTo(mSize.width*0.8402500 + mPointLeft,mSize.height*0.009200000 + mPointTop);
        path_1.lineTo(mSize.width*0.8785500 + mPointLeft,mSize.height*0.001500000 + mPointTop);
        path_1.lineTo(mSize.width*0.9168500 + mPointLeft,mSize.height*0.001500000 + mPointTop);
        path_1.lineTo(mSize.width*0.9549500 + mPointLeft,mSize.height*0.01070000 + mPointTop);
        path_1.lineTo(mSize.width*0.9932500 + mPointLeft,mSize.height*0.009850000 + mPointTop);
        path_1.lineTo(mSize.width*0.9931000 + mPointLeft,mSize.height*0.01380000 + mPointTop);
        path_1.lineTo(mSize.width*0.9935000 + mPointLeft,mSize.height*0.01380000 + mPointTop);
        path_1.lineTo(mSize.width*0.9929000 + mPointLeft,mSize.height*0.01800000 + mPointTop);
        path_1.lineTo(mSize.width*0.9917000 + mPointLeft,mSize.height*0.04795000 + mPointTop);
        path_1.lineTo(mSize.width*0.9855000 + mPointLeft,mSize.height*0.08600000 + mPointTop);
        path_1.lineTo(mSize.width*0.9855000 + mPointLeft,mSize.height*0.1222500 + mPointTop);
        path_1.lineTo(mSize.width*0.9886000 + mPointLeft,mSize.height*0.1607500 + mPointTop);
        path_1.lineTo(mSize.width*0.9886000 + mPointLeft,mSize.height*0.1988500 + mPointTop);
        path_1.lineTo(mSize.width*0.9793000 + mPointLeft,mSize.height*0.2369000 + mPointTop);
        path_1.lineTo(mSize.width*0.9901500 + mPointLeft,mSize.height*0.2750000 + mPointTop);
        path_1.lineTo(mSize.width*0.9855000 + mPointLeft,mSize.height*0.3131000 + mPointTop);
        path_1.lineTo(mSize.width*0.9948000 + mPointLeft,mSize.height*0.3511500 + mPointTop);
        path_1.lineTo(mSize.width*0.9932500 + mPointLeft,mSize.height*0.3892500 + mPointTop);
        path_1.lineTo(mSize.width*0.9824000 + mPointLeft,mSize.height*0.4273500 + mPointTop);
        path_1.lineTo(mSize.width*0.9793000 + mPointLeft,mSize.height*0.4654000 + mPointTop);
        path_1.lineTo(mSize.width*0.9808000 + mPointLeft,mSize.height*0.5021000 + mPointTop);
        path_1.lineTo(mSize.width*0.9901500 + mPointLeft,mSize.height*0.5782500 + mPointTop);
        path_1.lineTo(mSize.width*0.9917000 + mPointLeft,mSize.height*0.6163000 + mPointTop);
        path_1.lineTo(mSize.width*0.9963500 + mPointLeft,mSize.height*0.6544000 + mPointTop);
        path_1.lineTo(mSize.width*0.9901500 + mPointLeft,mSize.height*0.6925000 + mPointTop);
        path_1.lineTo(mSize.width*0.9901500 + mPointLeft,mSize.height*0.7305500 + mPointTop);
        path_1.lineTo(mSize.width*0.9808500 + mPointLeft,mSize.height*0.7686500 + mPointTop);
        path_1.lineTo(mSize.width*0.9932500 + mPointLeft,mSize.height*0.8067000 + mPointTop);
        path_1.lineTo(mSize.width*0.9870500 + mPointLeft,mSize.height*0.8448000 + mPointTop);
        path_1.lineTo(mSize.width*0.9948000 + mPointLeft,mSize.height*0.8829000 + mPointTop);
        path_1.lineTo(mSize.width*0.9948000 + mPointLeft,mSize.height*0.9209500 + mPointTop);
        path_1.lineTo(mSize.width*0.9888500 + mPointLeft,mSize.height*0.9452500 + mPointTop);
        path_1.lineTo(mSize.width + mPointLeft,mSize.height*0.9885000 + mPointTop);
        path_1.lineTo(mSize.width*0.9580000 + mPointLeft,mSize.height*0.9900500 + mPointTop);
        path_1.lineTo(mSize.width*0.9361500 + mPointLeft,mSize.height*0.9839000 + mPointTop);
        path_1.lineTo(mSize.width*0.9197000 + mPointLeft,mSize.height*0.9792500 + mPointTop);
        path_1.lineTo(mSize.width*0.8814000 + mPointLeft,mSize.height*0.9885000 + mPointTop);
        path_1.lineTo(mSize.width*0.8430500 + mPointLeft,mSize.height*0.9885000 + mPointTop);
        path_1.lineTo(mSize.width*0.8047500 + mPointLeft,mSize.height*0.9900500 + mPointTop);
        path_1.lineTo(mSize.width*0.7664500 + mPointLeft,mSize.height*0.9839000 + mPointTop);
        path_1.lineTo(mSize.width*0.7281000 + mPointLeft,mSize.height*0.9900500 + mPointTop);
        path_1.lineTo(mSize.width*0.6898000 + mPointLeft,mSize.height*0.9885500 + mPointTop);
        path_1.lineTo(mSize.width*0.6514500 + mPointLeft,mSize.height*0.9823500 + mPointTop);
        path_1.lineTo(mSize.width*0.6131500 + mPointLeft,mSize.height*0.9854000 + mPointTop);
        path_1.lineTo(mSize.width*0.5748000 + mPointLeft,mSize.height*0.9870000 + mPointTop);
        path_1.lineTo(mSize.width*0.5365000 + mPointLeft,mSize.height*0.9731000 + mPointTop);
        path_1.lineTo(mSize.width*0.4981500 + mPointLeft,mSize.height*0.9823500 + mPointTop);
        path_1.lineTo(mSize.width*0.4598500 + mPointLeft,mSize.height*0.9870000 + mPointTop);
        path_1.lineTo(mSize.width*0.4215500 + mPointLeft,mSize.height*0.9839000 + mPointTop);
        path_1.lineTo(mSize.width*0.3832000 + mPointLeft,mSize.height*0.9870000 + mPointTop);
        path_1.lineTo(mSize.width*0.3463000 + mPointLeft,mSize.height*0.9792500 + mPointTop);
        path_1.lineTo(mSize.width*0.3080000 + mPointLeft,mSize.height*0.9808000 + mPointTop);
        path_1.lineTo(mSize.width*0.2313500 + mPointLeft,mSize.height*0.9746500 + mPointTop);
        path_1.lineTo(mSize.width*0.1930000 + mPointLeft,mSize.height*0.9885000 + mPointTop);
        path_1.lineTo(mSize.width*0.1547000 + mPointLeft,mSize.height*0.9808000 + mPointTop);
        path_1.lineTo(mSize.width*0.1164000 + mPointLeft,mSize.height*0.9869500 + mPointTop);
        path_1.lineTo(mSize.width*0.07240000 + mPointLeft,mSize.height*0.9792500 + mPointTop);
        path_1.lineTo(mSize.width*0.05605000 + mPointLeft,mSize.height*0.9938500 + mPointTop);
        path_1.lineTo(mSize.width*0.05580000 + mPointLeft,mSize.height*0.9971500 + mPointTop);
        path_1.close();

        Paint paint_1_fill = Paint()..style=PaintingStyle.fill;
        paint_1_fill.color = appearance.markerDotStyle!.color.withOpacity(1.0);
        canvas.drawPath(path_1,paint_1_fill);
      }

How show In UI widget_ui_image

Exported Image downlaoded_image_1024x1024 copy

ashishCodixel commented 2 years ago

@lukef hello please give me an answer as soon as possible.

kopianan commented 2 years ago

please merge this

BraveEvidence commented 1 year ago

This might help https://www.youtube.com/watch?v=9ADSWmPCJMg&list=PLQhQEGkwKZUqZC2QAp_u4ZAzqpsCCRvmM&index=6 https://www.youtube.com/watch?v=ZRUE1i15TYw&list=PLQhQEGkwKZUqZC2QAp_u4ZAzqpsCCRvmM&index=7