Watermark Position Issue
This change is likely due to an update in the way the plugin handles PDF generation. The latest versions of PDF generation libraries (like **TCPDF**, **FPDF**, or **Dompdf**) might have changed how watermarks are rendered by default.
Here's how you can address this issue:
### Solution 1: Adjust Watermark Settings in the Plugin (if available)
First, check if the WooCommerce PDF Invoices plugin settings have an option to change the watermark layer (above or below the content):
1. Go to **WooCommerce** > **PDF Invoices** settings.
2. Look for any options related to watermark positioning.
3. If there is a setting for "Watermark Layer" or similar, change it to **Behind Content**.
### Solution 2: Modify the Plugin Code (Advanced)
If there are no settings available to adjust this behavior, you may need to tweak the plugin's code. Here's how to force the watermark behind the content:
1. **Locate the Watermark Function**: Look for the PHP file responsible for generating the PDF. Commonly, it's in the plugin's directory:
wp-content/plugins/woocommerce-pdf-invoices/includes/2. **Add or Adjust the Watermark Code**:
Look for something like this:
$pdf->SetWatermarkText('Your Watermark');
$pdf->showWatermarkText = true;Change the order of how content and watermark are generated. Ensure the watermark is set before adding any text or content.
3. **Force Watermark Behind Content**:
If the plugin uses **Dompdf**, you might be able to use CSS to position the watermark:
.watermark {
position: absolute;
top: 0;
left: 0;
z-index: -1; /* Ensure it's behind */
opacity: 0.1; /* Adjust as needed */
}### Solution 3: Roll Back to Previous Version
If the above solutions are too complex or you're short on time, consider rolling back to the previous version of the plugin where the watermark worked as expected:
1. Go to **Plugins** > **Installed Plugins**.
2. Click **Rollback** (you may need the **WP Rollback** plugin installed).
3. Select the previous stable version.
### Solution 4: Contact Plugin Support
If the issue persists, it's best to contact the WooCommerce PDF Invoices plugin support. Provide them with details about the version change and how the watermark is behaving. They might have a hotfix or a quick solution for this.
Let me know if any of these solutions help!
### Solution: Use CSS and Proper Layering with Dompdf
1. **Locate Your PDF Generation Code**:
– Check where your watermark is being added, usually in the PHP file where Dompdf is initialized.
2. **Adjust the Watermark Position**:
– Ensure your watermark is placed in the background using CSS. Here’s an example:
use DompdfDompdf;
use DompdfOptions;
$options = new Options();
$options->set('isHtml5ParserEnabled', true);
$dompdf = new Dompdf($options);
$html = '
<html>
<body>
<div style="position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: -1; opacity: 0.1; text-align: center; font-size: 80px; transform: rotate(-45deg);">
Your Watermark Text
</div>
<div>
<!-- Your actual PDF content here -->
<h1>Invoice Content Goes Here</h1>
<p>This is your invoice text...</p>
</div>
</body>
</html>
';
$dompdf->loadHtml($html);
$dompdf->setPaper('A4', 'portrait');
$dompdf->render();
$dompdf->stream("invoice.pdf");### Explanation:
– The watermark is set in an absolutely positioned “ with `z-index: -1`, ensuring it stays behind the main content.
– `opacity` is used to control the transparency of the watermark.
– Adjust the font size, rotation, and other styles as needed.
3. **Regenerate Your PDFs**:
– Clear any cache if your WooCommerce PDF plugin uses one.
– Generate a new PDF and confirm that the watermark is now behind the text.
### Alternative: Use Dompdf Canvas for Watermark
Dompdf also allows you to use a canvas approach to add watermarks:
$canvas = $dompdf->getCanvas();
$canvas->page_text(72, 72, 'Your Watermark', 'Arial', 100, [0.85, 0.85, 0.85], 45);This method places the watermark behind the main content, leveraging Dompdf's canvas.
Let me know if this resolves your issue!