apnxmammoth Posts - Answer Overflow

apnxmammoth

•Created by apnxmammoth on 11/9/2024 in #help

✅ PdfPig

I don't know what I am doing wrong. I am trying to generate a PDF document and attach an image (PNG) to the PDF Document. The problem is that I keep getting an index out of range exception. I did the math, and the points I use for the image coordinates are correct (At least, I am 98% sure). This is what I have:

private const double POINT_VALUE = 2.83465f;
private const double MARGIN = 10 * POINT_VALUE;
private const double PAGE_WIDTH = 60 * POINT_VALUE; // 170.079 points
private const double PAGE_HEIGHT = 108 * POINT_VALUE; // 306.142 points
private const double IMAGE_WIDTH = 40 * POINT_VALUE; // 113.386 points
private const double IMAGE_HEIGHT = 40 * POINT_VALUE; // 113.386 points
private const double IMAGE_X1 = MARGIN;
private const double IMAGE_Y1 = PAGE_HEIGHT - MARGIN - IMAGE_HEIGHT;
private const double IMAGE_X2 = IMAGE_X1 + IMAGE_WIDTH;
private const double IMAGE_Y2 = PAGE_HEIGHT - MARGIN;

public byte[] GeneratePrintableLabel(LogisticsViewModel model)
{
    PdfDocumentBuilder builder = new PdfDocumentBuilder();
    var fontBytes = File.ReadAllBytes("wwwroot/assets/fonts/la-regular-400.ttf");
    var font = builder.AddTrueTypeFont(fontBytes);

    var page = builder.AddPage(PAGE_WIDTH, PAGE_HEIGHT);

    var qrCodeBytes = GenerateQrCode($"{model.Description}|{model.PalletNumber}|{model.Batch}|{model.Date:dd/MM/yyyy}|{model.Quantity}");

    var qrPlacement = new PdfRectangle(IMAGE_X1, IMAGE_Y1, IMAGE_X2, IMAGE_Y2);
    page.AddPng(qrCodeBytes, qrPlacement);

    page.AddText($"Description: {model.Description}", 12, new PdfPoint(IMAGE_X2 + MARGIN, PAGE_HEIGHT - MARGIN - 20), font);
    page.AddText($"Quantity: {model.Quantity}", 12, new PdfPoint(IMAGE_X2 + MARGIN, PAGE_HEIGHT - MARGIN - 40), font);

    var pdfDocument = builder.Build();
    using (var stream = new MemoryStream())
    {
        return stream.ToArray();
    }
}

private const double POINT_VALUE = 2.83465f;
private const double MARGIN = 10 * POINT_VALUE;
private const double PAGE_WIDTH = 60 * POINT_VALUE; // 170.079 points
private const double PAGE_HEIGHT = 108 * POINT_VALUE; // 306.142 points
private const double IMAGE_WIDTH = 40 * POINT_VALUE; // 113.386 points
private const double IMAGE_HEIGHT = 40 * POINT_VALUE; // 113.386 points
private const double IMAGE_X1 = MARGIN;
private const double IMAGE_Y1 = PAGE_HEIGHT - MARGIN - IMAGE_HEIGHT;
private const double IMAGE_X2 = IMAGE_X1 + IMAGE_WIDTH;
private const double IMAGE_Y2 = PAGE_HEIGHT - MARGIN;

public byte[] GeneratePrintableLabel(LogisticsViewModel model)
{
    PdfDocumentBuilder builder = new PdfDocumentBuilder();
    var fontBytes = File.ReadAllBytes("wwwroot/assets/fonts/la-regular-400.ttf");
    var font = builder.AddTrueTypeFont(fontBytes);

    var page = builder.AddPage(PAGE_WIDTH, PAGE_HEIGHT);

    var qrCodeBytes = GenerateQrCode($"{model.Description}|{model.PalletNumber}|{model.Batch}|{model.Date:dd/MM/yyyy}|{model.Quantity}");

    var qrPlacement = new PdfRectangle(IMAGE_X1, IMAGE_Y1, IMAGE_X2, IMAGE_Y2);
    page.AddPng(qrCodeBytes, qrPlacement);

    page.AddText($"Description: {model.Description}", 12, new PdfPoint(IMAGE_X2 + MARGIN, PAGE_HEIGHT - MARGIN - 20), font);
    page.AddText($"Quantity: {model.Quantity}", 12, new PdfPoint(IMAGE_X2 + MARGIN, PAGE_HEIGHT - MARGIN - 40), font);

    var pdfDocument = builder.Build();
    using (var stream = new MemoryStream())
    {
        return stream.ToArray();
    }
}

For context: X1 and Y1 = Bottom Left coordinates and X2 and Y2 is top right.

10 replies

CC#

•Created by apnxmammoth on 11/2/2024 in #help

.NET MAUI and Android Intents

Hey guys, I hate to be a bother, but I have a bit of a situation, is there anyone here that works with MAUI that could possibly help me? In short... I need to integrate with a phone that has a built in barcode scanner (UROVO DT50), and I managed to find the API documentation, but I for the life of me cannot grasp the concept of intents and how to use them in MAUI.

2 replies

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