[Laszlo-dev] Query args width and height processed by LaszloCanvas.lzs#construct()

[P T Withington]

I don't know the history, but notice that the canvas is _looking_ for  
those params.  It's not that query params override an application var  
or setting (which could be a security issue).  The developer of the  
canvas specifically asks for these params.

The history of canvas size is long and tortured, and there are a lot  
of crazy paths in the compiler to handle absolute vs. percentage  
sizing.  I am a big proponent for letting the size be dynamic, taken  
from the browser or query args, rather than having to recompile your  
app to resize it.

On 2009-07-19, at 11:21EDT, Max Carlson wrote:

> Perhaps we want a different behavior when fullscreen is on.  It  
> should act much more like the default of 100% by 100%. Maybe the  
> part of canvas.construct() that registers for screen size  
> notifications should be refactored to a separate method so it can be  
> called when fullscreen is turned on...
>
> -----Original Message-----
> From: Raju Bitter <rajubitter at me.com>
> Sent: Sunday, July 19, 2009 8:47 AM
> To: Raju Bitter <rajubitter at me.com>
> Cc: Laszlo-dev bug reporting <laszlo-dev at openlaszlo.org>
> Subject: Re: [Laszlo-dev] Query args width and height processed by  
> LaszloCanvas.lzs#construct()
>
> And if you don't want to read the forum post: he attached a width and
> height parameter to the SWF for whatever reason (customer
> requirement), and never expected that to influence the behavior full
> screen.
>
> So my question actually is:
> 1) is it a documented behavior, that you can override width and height
> with query vars
> 2) if it's a documented behavior or a "feature", I need to mention in
> the fullscreen documentation what effect it will have
>
> On Jul 19, 2009, at 4:41 PM, Raju Bitter wrote:
>
>> That means: if you have the app running at 600x600 without full
>> screen, and you go into full screen on a 1440x900 screen, the canvas
>> will remain at 600x600 in the upper left corner of the screen.
>>
>> Of course you can easily avoid that by NOT passing any value through
>> query vars into the Laszlo app, but if you look into the forum post
>> that caused this discussion you'll see that a user got confused by
>> that behavior.
>>
>> I was just investigating what's going on to help this guy.
>>
>> On Jul 19, 2009, at 3:46 PM, Sarah Allen wrote:
>>
>>> um... so what is the conflict?
>>>
>>> On Jul 19, 2009, at 6:30 AM, Raju Bitter wrote:
>>>
>>>> Actually it happens on canvas construction, in the construct()
>>>> method. Which means, it overrides the values in your <canvas />
>>>> declaration within LZX. As a result canvas will - even in full
>>>> screen mode - still report the static width & height passed into
>>>> the app.
>>>>
>>>> On Jul 19, 2009, at 3:09 AM, Sarah Allen wrote:
>>>>
>>>>> It does seem like a useful feature in case you want to use a swf
>>>>> embedded in something that is not a browser (although I suppose
>>>>> you could always write it yourself in code, so maybe it is not
>>>>> worth maintaining)
>>>>>
>>>>> Just curious... why does it interfere with full screen mode?  I
>>>>> would think that would happen long after canvas construct...
>>>>>
>>>>> On Jul 18, 2009, at 5:47 PM, Raju Bitter wrote:
>>>>>
>>>>>> A user in the forums ran into a problem with f
>
> [The entire original message is not included]
>