Skip to main content

How can I render a div that has its visibility:'hidden'? in PDFjs

So I'm implementing a feature in my react web app, and in one of the Views, I have a button that takes 2 HTMLElements and display them in 2 pages in a PDF, but I would like one of them to stay hidden. The problem is that while hidden, PDFjs does not render it. Same happens when trying to set it to position:'absolute' and smth like '-999999px'.

This is the piece of code responsible for capturing and saving:

const downloadIt = () => {
    const blackboard = document.getElementById('blackboard') as HTMLElement;
    const descriptionList = document.getElementById('elementDescriptions') as HTMLElement;
  
    const width = blackboard.offsetWidth;
    const height = blackboard.offsetHeight;
    const aspectRatio = width / height;
  
    html2canvas(blackboard).then((canvas) => {
      const pdf = new jsPDF();
      const imageData = canvas.toDataURL('image/png');
      const pdfHeight = pdf.internal.pageSize.getWidth() * (1 / aspectRatio);
  
      pdf.text(comp.title, 8, 8);
      pdf.addImage(imageData, 'PNG', 15, 15, pdf.internal.pageSize.getWidth() - 20, pdfHeight);
  
      pdf.addPage();
  
      // Add the descriptionList to the PDF
      if (descriptionList) {
        html2canvas(descriptionList).then((descCanvas) => {
          const descData = descCanvas.toDataURL('image/png');
          const descAspectRatio = descCanvas.width / descCanvas.height;
          const descWidth = pdf.internal.pageSize.getWidth() - 190; // Adjust the margins as needed
          const descHeight = descWidth * (1 / descAspectRatio);
  
          pdf.addImage(descData, 'PNG', 15, 15, descWidth, descHeight);
  
          pdf.save(`${comp.title}.pdf`);
        });
      } else {
        pdf.save(`${comp.title}.pdf`);
      }
    });
  };

The one I'd like to hide is the one called descriptionList, just a simple div with some Cards inside.

I've tried moving it out of the way, but it keeps giving me an error of corrupt PNG file passed to PDFjs

Via Active questions tagged javascript - Stack Overflow https://ift.tt/1MXH57F

Labels

Labels:

Comments

Post a Comment

Popular posts from this blog

Why is my reports service not connecting?

I am trying to pull some data from a Postgres database using Node.js and node-postures but I can't figure out why my service isn't connecting. my routes/index.js file: const express = require('express'); const router = express.Router(); const ordersCountController = require('../controllers/ordersCountController'); const ordersController = require('../controllers/ordersController'); const weeklyReportsController = require('../controllers/weeklyReportsController'); router.get('/orders_count', ordersCountController); router.get('/orders', ordersController); router.get('/weekly_reports', weeklyReportsController); module.exports = router; My controllers/weeklyReportsController.js file: const weeklyReportsService = require('../services/weeklyReportsService'); const weeklyReportsController = async (req, res) => { try { const data = await weeklyReportsService; res.json({data}) console...
Post a Comment
Read more

How to show number of registered users in Laravel based on usertype?

i'm trying to display data from the database in the admin dashboard i used this: <?php use Illuminate\Support\Facades\DB; $users = DB::table('users')->count(); echo $users; ?> and i have successfully get the correct data from the database but what if i want to display a specific data for example in this user table there is "usertype" that specify if the user is normal user or admin i want to user the same code above but to display a specific usertype i tried this: <?php use Illuminate\Support\Facades\DB; $users = DB::table('users')->count()->WHERE usertype =admin; echo $users; ?> but it didn't work, what am i doing wrong? source https://stackoverflow.com/questions/68199726/how-to-show-number-of-registered-users-in-laravel-based-on-usertype
Post a Comment
Read more

ValueError: X has 10 features, but LinearRegression is expecting 1 features as input

So, I am trying to predict the model but its throwing error like it has 10 features but it expacts only 1. So I am confused can anyone help me with it? more importantly its not working for me when my friend runs it. It works perfectly fine dose anyone know the reason about it? cv = KFold(n_splits = 10) all_loss = [] for i in range(9): # 1st for loop over polynomial orders poly_order = i X_train = make_polynomial(x, poly_order) loss_at_order = [] # initiate a set to collect loss for CV for train_index, test_index in cv.split(X_train): print('TRAIN:', train_index, 'TEST:', test_index) X_train_cv, X_test_cv = X_train[train_index], X_test[test_index] t_train_cv, t_test_cv = t[train_index], t[test_index] reg.fit(X_train_cv, t_train_cv) loss_at_order.append(np.mean((t_test_cv - reg.predict(X_test_cv))**2)) # collect loss at fold all_loss.append(np.mean(loss_at_order)) # collect loss at order plt.plot(np.log(al...
Post a Comment
Read more