Fix PDF export for non-Latin characters

[Copilot]

Description

PDF export renders non-Latin characters (Chinese, Japanese, Korean, etc.) as garbled text. jsPDF's default Helvetica font only supports ASCII via WinAnsiEncoding.

Changes

Font Integration

• Added roboto-subset-font.ts containing base64-encoded Roboto font subset (~34KB)
• Font includes: Basic Latin, Latin-1 Supplement, CJK Symbols, CJK Unified Ideographs, Fullwidth Forms
• Licensed under Apache 2.0

PDF Exporter Updates

• Load Roboto font on PDF creation via addFileToVFS and addFont
• Replace all Helvetica references with Roboto throughout rendering pipeline

Example

Grid with header "会社名" (Company Name) now exports correctly instead of showing garbled characters:

// The fix automatically applies to all PDF exports
const options = new IgxPdfExporterOptions('ExportedData');
this.pdfExporter.export(this.grid, options);
// Non-Latin characters in headers and data now render properly

Additional information (check all that apply):

• Bug fix
• New functionality
• Documentation
• Demos
• CI/CD

Checklist:

• All relevant tags have been applied to this PR
• This PR includes unit tests covering all the new code (test guidelines)
• This PR includes API docs for newly added methods/properties (api docs guidelines)
• This PR includes feature/README.MD updates for the feature docs
• This PR includes general feature table updates in the root README.MD
• This PR includes CHANGELOG.MD updates for newly added functionality
• This PR contains breaking changes
• This PR includes ng update migrations for the breaking changes (migrations guidelines)
• This PR includes behavioral changes and the feature specification has been updated with them

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• accounts.google.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=network --no-sandbox --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4282 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-89988147 --change-stack-guard-on-fork=enable --shared-files=network_parent_dirs_pipe:100,v8_context_snapshot_data:101 --field-trial-handle=3,i,15795168843186329524,6816058846193629592,262144 --disable-features=PaintHolding --variations-seed-version --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=network --no-sandbox --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4281 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-1366071 --change-stack-guard-on-fork=enable --shared-files=network_parent_dirs_pipe:100,v8_context_snapshot_data:101 --field-trial-handle=3,i,17638048398352027111,12919533015041695926,262144 --disable-features=PaintHolding --variations-seed-version --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /home/REDACTED/.cache/puppeteer/chrome/linux-142.0.7444.175/chrome-linux64/chrome /home/REDACTED/.cache/puppeteer/chrome/linux-142.0.7444.175/chrome-linux64/chrome --user-data-dir=/tmp/karma-89988147 --enable-automation --no-default-browser-check --no-first-run --disable-default-apps --disable-popup-blocking --disable-translate --disable-REDACTED-timer-throttling --disable-renderer-REDACTEDing --disable-device-discovery-notifications --no-sandbox --disable-gpu --window-size=820,800 --js-flags=--expose-gc http://localhost:9876/?id=89988147 --headless --disable-gpu --disable-dev-shm-usage --remote-debugging-port=9222 (dns block)
• android.clients.google.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=network --no-sandbox --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4281 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-1366071 --change-stack-guard-on-fork=enable --shared-files=network_parent_dirs_pipe:100,v8_context_snapshot_data:101 --field-trial-handle=3,i,17638048398352027111,12919533015041695926,262144 --disable-features=PaintHolding --variations-seed-version --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /home/REDACTED/.cache/puppeteer/chrome/linux-142.0.7444.175/chrome-linux64/chrome /home/REDACTED/.cache/puppeteer/chrome/linux-142.0.7444.175/chrome-linux64/chrome --user-data-dir=/tmp/karma-1366071 --enable-automation --no-default-browser-check --no-first-run --disable-default-apps --disable-popup-blocking --disable-translate --disable-REDACTED-timer-throttling --disable-renderer-REDACTEDing --disable-device-discovery-notifications --no-sandbox --disable-gpu --window-size=820,800 --js-flags=--expose-gc http://localhost:9876/?id=1366071 --headless --disable-gpu --disable-dev-shm-usage --remote-debugging-port=9222 (dns block)
• clients2.google.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=network --no-sandbox --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4282 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-89988147 --change-stack-guard-on-fork=enable --shared-files=network_parent_dirs_pipe:100,v8_context_snapshot_data:101 --field-trial-handle=3,i,15795168843186329524,6816058846193629592,262144 --disable-features=PaintHolding --variations-seed-version --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /home/REDACTED/.cache/puppeteer/chrome/linux-142.0.7444.175/chrome-linux64/chrome /home/REDACTED/.cache/puppeteer/chrome/linux-142.0.7444.175/chrome-linux64/chrome --user-data-dir=/tmp/karma-89988147 --enable-automation --no-default-browser-check --no-first-run --disable-default-apps --disable-popup-blocking --disable-translate --disable-REDACTED-timer-throttling --disable-renderer-REDACTEDing --disable-device-discovery-notifications --no-sandbox --disable-gpu --window-size=820,800 --js-flags=--expose-gc http://localhost:9876/?id=89988147 --headless --disable-gpu --disable-dev-shm-usage --remote-debugging-port=9222 (dns block)
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=network --no-sandbox --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4281 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-1366071 --change-stack-guard-on-fork=enable --shared-files=network_parent_dirs_pipe:100,v8_context_snapshot_data:101 --field-trial-handle=3,i,17638048398352027111,12919533015041695926,262144 --disable-features=PaintHolding --variations-seed-version --trace-process-track-uuid=3190708989122997041 (dns block)
• redirector.gvt1.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=network --no-sandbox --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4282 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-89988147 --change-stack-guard-on-fork=enable --shared-files=network_parent_dirs_pipe:100,v8_context_snapshot_data:101 --field-trial-handle=3,i,15795168843186329524,6816058846193629592,262144 --disable-features=PaintHolding --variations-seed-version --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /home/REDACTED/.cache/puppeteer/chrome/linux-142.0.7444.175/chrome-linux64/chrome /home/REDACTED/.cache/puppeteer/chrome/linux-142.0.7444.175/chrome-linux64/chrome --user-data-dir=/tmp/karma-89988147 --enable-automation --no-default-browser-check --no-first-run --disable-default-apps --disable-popup-blocking --disable-translate --disable-REDACTED-timer-throttling --disable-renderer-REDACTEDing --disable-device-discovery-notifications --no-sandbox --disable-gpu --window-size=820,800 --js-flags=--expose-gc http://localhost:9876/?id=89988147 --headless --disable-gpu --disable-dev-shm-usage --remote-debugging-port=9222 (dns block)
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=network --no-sandbox --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4281 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-1366071 --change-stack-guard-on-fork=enable --shared-files=network_parent_dirs_pipe:100,v8_context_snapshot_data:101 --field-trial-handle=3,i,17638048398352027111,12919533015041695926,262144 --disable-features=PaintHolding --variations-seed-version --trace-process-track-uuid=3190708989122997041 (dns block)
• safebrowsing.googleapis.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=network --no-sandbox --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4281 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-1366071 --change-stack-guard-on-fork=enable --shared-files=network_parent_dirs_pipe:100,v8_context_snapshot_data:101 --field-trial-handle=3,i,17638048398352027111,12919533015041695926,262144 --disable-features=PaintHolding --variations-seed-version --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /home/REDACTED/.cache/puppeteer/chrome/linux-142.0.7444.175/chrome-linux64/chrome /home/REDACTED/.cache/puppeteer/chrome/linux-142.0.7444.175/chrome-linux64/chrome --user-data-dir=/tmp/karma-1366071 --enable-automation --no-default-browser-check --no-first-run --disable-default-apps --disable-popup-blocking --disable-translate --disable-REDACTED-timer-throttling --disable-renderer-REDACTEDing --disable-device-discovery-notifications --no-sandbox --disable-gpu --window-size=820,800 --js-flags=--expose-gc http://localhost:9876/?id=1366071 --headless --disable-gpu --disable-dev-shm-usage --remote-debugging-port=9222 (dns block)
• update.googleapis.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=network --no-sandbox --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4281 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-1366071 --change-stack-guard-on-fork=enable --shared-files=network_parent_dirs_pipe:100,v8_context_snapshot_data:101 --field-trial-handle=3,i,17638048398352027111,12919533015041695926,262144 --disable-features=PaintHolding --variations-seed-version --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /home/REDACTED/.cache/puppeteer/chrome/linux-142.0.7444.175/chrome-linux64/chrome /home/REDACTED/.cache/puppeteer/chrome/linux-142.0.7444.175/chrome-linux64/chrome --user-data-dir=/tmp/karma-1366071 --enable-automation --no-default-browser-check --no-first-run --disable-default-apps --disable-popup-blocking --disable-translate --disable-REDACTED-timer-throttling --disable-renderer-REDACTEDing --disable-device-discovery-notifications --no-sandbox --disable-gpu --window-size=820,800 --js-flags=--expose-gc http://localhost:9876/?id=1366071 --headless --disable-gpu --disable-dev-shm-usage --remote-debugging-port=9222 (dns block)
• www.google.com
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=network --no-sandbox --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4282 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-89988147 --change-stack-guard-on-fork=enable --shared-files=network_parent_dirs_pipe:100,v8_context_snapshot_data:101 --field-trial-handle=3,i,15795168843186329524,6816058846193629592,262144 --disable-features=PaintHolding --variations-seed-version --trace-process-track-uuid=3190708989122997041 (dns block)
  • Triggering command: /home/REDACTED/.cache/puppeteer/chrome/linux-142.0.7444.175/chrome-linux64/chrome /home/REDACTED/.cache/puppeteer/chrome/linux-142.0.7444.175/chrome-linux64/chrome --user-data-dir=/tmp/karma-89988147 --enable-automation --no-default-browser-check --no-first-run --disable-default-apps --disable-popup-blocking --disable-translate --disable-REDACTED-timer-throttling --disable-renderer-REDACTEDing --disable-device-discovery-notifications --no-sandbox --disable-gpu --window-size=820,800 --js-flags=--expose-gc http://localhost:9876/?id=89988147 --headless --disable-gpu --disable-dev-shm-usage --remote-debugging-port=9222 (dns block)
  • Triggering command: /proc/self/exe /proc/self/exe --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=network --no-sandbox --disable-dev-shm-usage --use-angle=swiftshader-webgl --crashpad-handler-pid=4281 --enable-crash-reporter=, --noerrdialogs --user-data-dir=/tmp/karma-1366071 --change-stack-guard-on-fork=enable --shared-files=network_parent_dirs_pipe:100,v8_context_snapshot_data:101 --field-trial-handle=3,i,17638048398352027111,12919533015041695926,262144 --disable-features=PaintHolding --variations-seed-version --trace-process-track-uuid=3190708989122997041 (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

---

This section details on the original issue you should resolve

<issue_title>[PDF] Non‑Latin text not exported properly</issue_title>
<issue_description> * igniteui-angular version:

• browser:

Steps to reproduce

1. Open the sample grid at src/app/grid-column-groups/grid-column-groups.sample.html.
2. Set the Company Name header to “会社名”.
3. Build and run the demos.
4. Load 'Grid Column Groups' sample.
5. Use the grid toolbar to export to PDF.
6. Open the generated PDF.

Result

The header text is displayed as garbled characters.

Expected result

Should properly export the header as “会社名”.

</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes [PDF] Non‑Latin text not exported properly #16606

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