Issue related to zoom in/ zoom out.

[Anish Jain]

Hi,
     We are facing some issue related to zoom in/ zoom out which is listed given below.

1. Performance:Page loading after zoom in operation is taking considerable time.
    Steps to reproduce:
      1.Perform Zoom in Operation
      2.Observe loading time
      Actual Result:Page loading after zoom in operation is taking considerable time (i.e.More than 10 sec)
      Expected Result:Page loading after zoom in operation should be quick
     
      Refer screenshot for details.

2. Android Mobile:Zoom-In Zoom-Out pinch in gesture is not smooth.
    Device: Android
    Browser:Chrome
  
    Steps to reproduce:
    1.Open the web viewer.
    2.Perform Zoom in operation.
    3.Perform Zoom out operation.
    Actual Result:Zoom-In Zoom-Out pinch in gesture is not smooth.Page Jerk is observed.
    Expected Result:Zoom-In Zoom-Out pinch in operation should be smooth.

Thanks & Regards,
Anish Jain

[Matt Parizeau]

Hi Anish,

1. Which document and on which page number is this slow loading occurring?  Which devices does this occur on?

2. Which Android device and with which Android version do you see the issue?  Does this occur on every page or just some?

Matt Parizeau

Software Developer

PDFTron Systems Inc.

[Chen NY David]

Hi ....

With the newer version 1.7.1, it seem it loose ability to pinch for zoom in/out but with restricted size by tapping. 

How to restore this ? Thank you

David

[Matt Parizeau]

Hi David,

I'm not quite sure what you mean by 1.7.1 losing the ability to pinch zoom.  There hasn't been any change to this functionality for that version and I just tried downloading WebViewer from pdftron.com and pinch zoom seems to work fine when running that viewer.  Can you be more specific about what doesn't work?  Can you reproduce the issue from our showcase?

Matt Parizeau

Software Developer

PDFTron Systems Inc.

[Chen NY David]

Dear Matt,

I use firefox on my android 4.2.1 and has some problem of trying to pinch to zoom. If i double to tap zoom and unable to further zoom in by pinch, 

But I do not have any issue with chrome. 

I also experience the jerking problem as reported by Anish Jain. 

Thanks.

David

On Wednesday, March 19, 2014 2:39:17 PM UTC+8, Anish Jain wrote:

[Matt Parizeau]

Hi David,

Did this work in versions before 1.7.1? I'm having trouble reproducing this issue but from my tests of some documents comparing performance in Chrome and Firefox on the same Android device Chrome performed much better.

One possibility for why the slow loading or jerking problem is occurring is because of the conversion options when converting the PDF to XOD. What version of PDFNet or DocPub are you using to convert? Newer versions have changed the default conversion options to generate XOD files that are more mobile friendly.

Matt Parizeau

Software Developer

PDFTron Systems Inc.

[Chen NY David]

Hi Matt,

I am using docpub ver 6.1121853 to convert my pdf 42mb (--norender --max_image_pixel 180000 --element_limit 60000 --op off).

Prior to 1.71, the 1.7.0 it is functionally in firefox whereas chrome crashes more often. 

So far I did not detect any error message (in debug) in 1.7.1 but it take up lot of memory.

David

On Wednesday, March 19, 2014 2:39:17 PM UTC+8, Anish Jain wrote:

[Matt Parizeau]

Hi David,

Is there a reason why you're using those specific options? Can you send me the document (XOD and PDF) so I can take a look and try out different conversion options. If you'd rather not post them here then you can email them to mpar...@pdftron.com.

Matt Parizeau

Software Developer

PDFTron Systems Inc.