TAdvWebbrowser and touch display

VCL TMS VCL UI Pack
1

i using a TAdvWebbrowser on a computer with touch display.
The TAdvWebbrowser has loaded a PDF document.
My Program needs to know, if the user is still working with the browser (scrolling, clicking).
But the events onClick etc. doesn't work if i using a touch display. Also the functions
" mouse.CursorPos.x" or "GetCursorPos" didn't work as long i working within the browser area.
What can i do to get a event or the mouse position within the browser area?

regards

2

Hi,

The browser consumes all events. It's currently not redirected to the wrapper control, so the events are not triggered. To handle the events at browser level, you'll have to create a JavaScript bridge and capture the mouse events there, then send a message to the wrapper control.

This is an example to register a bridge, and to communicate with the wrapper below is an example.

To register mouse events in JavaScript:

3

All these events are connected to a control inside a html document. But i have loaded a PDF document using LoadFile().

At first I thought I could work around it by embedding the PDF in an HTML document, but even if i load the pdf into an iFrame, it didn't work. That's because: iFrame<>PdfViewer.

  <html>
  <body>
  <iframe onclick="myFunction()" src="test.pdf" width="100%" height="400px" id="pdfbox" >
  </iframe>
  <script>
    function myFunction() {
      var obj = window.chrome.webview.hostObjects.sync.MyBridge;
      console.log(obj);
      if (obj) {
        obj.ObjectMessage = "Hello World";
      }
    }
  </script>
  </body>
  </html>
4

You could convert the PDF to base64 first with TAdvUtils.FileToBase64 and

s := 'data:application/pdf;base64,' + TAdvUtils.FileToBase64(MyPDF);

Then include that string in the HTML/iFrame