[Bug 249385] New: kmail message zoom jumps suddenly

[peter_s_d at fastmail.com.au]

https://bugs.kde.org/show_bug.cgi?id=249385

           Summary: kmail message zoom jumps suddenly
           Product: kmail
           Version: 1.13.3
          Platform: Mandriva RPMs
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: GUI
        AssignedTo: kdepim-bugs at kde.org
        ReportedBy: peter_s_d at fastmail.com.au


Version:           1.13.3 (using KDE 4.4.3) 
OS:                Linux

I have recently discovered that the kmail message panel has a zoom feature,
<ctrl> <scroll_mouse_wheel>.  It is good, but it changes suddenly.  Whenever I
select a different message to look at the zoom returns to standard size, that
is good.  

There are a couple of ways that the zoom factor could be remembered; such as
keeping the zoom factor unchanged across all messages until it is changed again
(or kmail is restarted), doing the same thing on a per message basis, or
continually reverting to 1:1 size.  

The problem is that it falls between these behaviours.  When I adjust the zoom
it is remembered, but not used when a different message is looked at. 
Adjusting the zoom on a new message adjusts it from where it used to be, not
from where it is.  I find this visually odd.  


Reproducible: Always

Steps to Reproduce:
Zoom in on a message, view the next message and come back to the original
message.  It is displayed at 1:1 size.  Touching the <ctrl><scroll_wheel> makes
the zoom jump suddenly to close to (but not the same as) what it used to be.  

It is a mater of opinion about what the "correct" behavior is in this
situation, but I find the current behavior odd.  

Actual Results:  
Zoom jump suddenly.

Expected Results:  
Zoom should be smooth.  (Preferably from the old value.)

OS: Linux (i686) release 2.6.33.5-desktop-2mnb
Compiler: gcc

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