Method GetBrowserZoomLevel

cpp/iedriver/BrowserFactory.cpp:738–776

}

int BrowserFactory::GetBrowserZoomLevel(IWebBrowser2* browser) {
  LOG(TRACE) << "Entering BrowserFactory::GetBrowserZoomLevel";
  clock_t end = clock() + (this->browser_attach_timeout_ / 1000 * CLOCKS_PER_SEC);
  CComPtr<IDispatch> document_dispatch;
  while (!document_dispatch) {
    if (this->browser_attach_timeout_ > 0 && (clock() > end)) {
      break;
    }

    browser->get_Document(&document_dispatch);

    if (!document_dispatch) {
      ::Sleep(250);
    }
  }

  if (!document_dispatch) {
    LOG(WARN) << "Call to IWebBrowser2::get_Document failed";
    return 0;
  }

  CComPtr<IHTMLDocument2> document;
  document_dispatch->QueryInterface(&document);
  if (!document) {
    LOG(WARN) << "QueryInterface for IHTMLDocument2 failed.";
    return 0;
  }

  CComPtr<IHTMLWindow2> window;
  HRESULT hr = document->get_parentWindow(&window);
  if (FAILED(hr)) {
    LOGHR(WARN, hr) << "Call to IHTMLDocument2::get_parentWindow failed";
    return 0;
  }

  // Test for zoom level = 100%
  int zoom_level = this->GetZoomLevel(document, window);
  return zoom_level;
}

int BrowserFactory::GetZoomLevel(IHTMLDocument2* document, IHTMLWindow2* window) {
  LOG(TRACE) << "Entering BrowserFactory::GetZoomLevel";