Custom (width and height) to print Product Labels on Odoo - QWEB - odoo

Question

Right now the system is printing the Product Labels and work fine but in wrong dimensions.
I need set width to 7cm and height to 4cm on QWEB report.
Where I can change the dimensions to print QWEB report?
I can't change the format to the print preferences because in a sheet can be many Products Labels.
This is my QWEB:
<?xml version="1.0"?>
<t t-name="product.report_productlabel">
<t t-call="report.html_container">
<div class="page">
<style>
</style>
<t t-foreach="docs" t-as="template">
<t t-foreach="template.product_variant_ids" t-as="product">
<div class="col-xs-6" style="padding:0;">
<table style="border-spacing:0;margin-bottom:0;height: 110px;border: 2px solid black;" class="table">
<thead>
<tr style="width: 3in;">
<td style="width: 2.63in;text-align: center;background-color: #fff;" colspan="2" class="col-xs-8 danger">
<strong style="text-transform: uppercase;">
<t t-esc="product.name"/>
</strong>
</td>
</tr>
</thead>
<tbody>
<tr style="width: 1in;">
<td style="text-align: center; border-top: 0px solid #fff; padding: 0px 5px 0px 5px;" class="col-xs-5">
<h4 style="border: 4px solid #ff4040;border-radius: 9px;background-color: #ffff00;padding: 10px 12px 10px 12px;font-size: 26px;margin-top: 0px;margin-bottom: 0px;">
<strong t-field="product.list_price" />
<strong>
<t t-esc="product.company_id.currency_id.symbol"/>
</strong>
</h4>
</td>
<td style="text-align: center;border-top: 0px solid #fff;padding: 0px 5px 0px 5px;" class="col-xs-7">
<img class="img-responsive"
t-att-src="'data:image/png;base64,%s' % res_company.logo"
style="background-color: #fff;margin-left: auto;margin-right: auto;width: auto;height: 16px;margin-bottom: 8px;"/>
<img class="img-responsive" t-if="product.barcode"
t-att-src="'/report/barcode/?type=%s&value=%s&width=%s&height=%s' % ('EAN13', product.barcode, 650, 200)"
style="height: 20px;width: 100%;"/>
<span style="">
<t t-esc="product.barcode"/>
</span>
</td>
</tr>
</tbody>
</table>
</div>
</t>
</t>
</div>

Answer 1

This the solution for the width of the table using the DPI of 90;
<table style="border-spacing:0;margin-bottom:0;height: 187px; width: 319px; border: 2px solid black;" class="table">
This is the QWEB template with the dimensions you need and I also scale the fonts and padding of the table elements to match the new width and height:
<?xml version="1.0"?>
<t t-name="product.report_productlabel">
<t t-call="report.html_container">
<div class="page">
<style>
</style>
<t t-foreach="docs" t-as="template">
<t t-foreach="template.product_variant_ids" t-as="product">
<div class="col-xs-6" style="padding:0;">
<table style="border-spacing:0;margin-bottom:0;height: 187px; width: 319px; border: 2px solid black;"
class="table">
<thead>
<tr style="width: 3in;">
<td style="width: 2.63in; font-size: 19px; text-align: left; background-color: #fff; margin-top: 10px;"
colspan="2"
class="col-xs-8 danger">
<strong style="text-transform: uppercase;">
<t t-esc="product.name"/>
</strong>
</td>
</tr>
</thead>
<tbody>
<tr style="width: 1in;">
<td width="50%"
style="text-align: center; border-top: 0px solid #fff; padding: 5px; position: relative;">
<div style="position:absolute; bottom: 20px; left: 0; padding-left: 5px; width: 100%">
<h4 style="border: 4px solid #ff4040; border-radius: 9px; background-color: #ffff00; padding: 10px 6px; font-size: 21px; margin: 0px ">
<strong t-field="product.list_price"/>
<strong>
<t t-esc="product.company_id.currency_id.symbol"/>
</strong>
</h4>
</div>
</td>
<td width="50%"
style="text-align: center;border-top: 0px solid #fff;padding: 5px; position: relative;">
<div style="position:absolute; bottom: 20px; padding-right: 5px;">
<img class="img-responsive"
t-att-src="'data:image/png;base64,%s' % res_company.logo"
style="background-color: #fff; margin-left: auto; margin-right: auto; width: auto; height: 35px; margin-bottom: 5px;"/>
<img class="img-responsive" t-if="product.barcode"
t-att-src="'/report/barcode/?type=%s&value=%s&width=%s&height=%s' % ('EAN13', product.barcode, 650, 200)"
style="height: 20px; width: 100%;"/>
<span style="font-size: 14px">
<t t-esc="product.barcode"/>
</span>
</div>
</td>
</tr>
</tbody>
</table>
</div>
</t>
</t>
</div>
</t>

Answer 2

You might look at the report.paperformat model, which defines the format for the paper size. You find the default values in addons\report\views\report_paperformat_views.xml.