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

Raju Bitter rajubitter at me.com
Tue Jul 21 17:38:40 PDT 2009


Correction for 3) I meant precedence instead of preference. ;-) "The  
passed values of 100%25 (URL encoded) for width and height have  
precedence over the canvas settings in LZX"

On Jul 22, 2009, at 2:20 AM, Raju Bitter wrote:

> This is the behavior I see:
>
> 1) WORKS: Canvas resizes to full screen, debug window resizes with  
> it (if debug is enabled)
> <canvas width="100%" height="100%"
> <object type="application/x-shockwave-flash"  
> data="fullscreen2.lzx.swf8.swf?lzproxied=false" width="100%" heig\
> ht="100%">
>         <param name="movie" value="fullscreenexample/ 
> fullscreen2.lzx.swf8.swf?lzproxied=false">
>         <param name="quality" value="high">
>         <param name="scale" value="noscale">
>         <param name="salign" value="LT">
>         <param name="allowFullScreen" value="true">
>         <param name="menu" value="false"></object>
>
> 2) WORKS: Canvas resizes to full screen, debug window resizes with  
> it (if debug enabled)
> <canvas width="100%" height="100%"
> <object type="application/x-shockwave-flash"  
> data="fullscreen2.lzx.swf8.swf?lzproxied=false" width="600" heig\
> ht="600">
>         <param name="movie" value="fullscreenexample/ 
> fullscreen2.lzx.swf8.swf?lzproxied=false">
>         <param name="quality" value="high">
>         <param name="scale" value="noscale">
>         <param name="salign" value="LT">
>         <param name="allowFullScreen" value="true">
>         <param name="menu" value="false"></object>
>
> 3) WORKS: in normal mode at 800x800 pixel, going into full screen  
> without problem, debug window resizes automatically. The passed  
> values of 100%25 (URL encoded) for width and height have preference  
> over the canvas settings in LZX
> <canvas width="600" height="600"
> <object type="application/x-shockwave-flash"  
> data="fullscreen2.lzx.swf8.swf? 
> lzproxied=false&width=100%25&height=100%25"\
> width="800" height="800">
>         <param name="movie" value="fullscreenexample/ 
> fullscreen2.lzx.swf8.swf?lzproxied=false">
>         <param name="quality" value="high">
>         <param name="scale" value="noscale">
>         <param name="salign" value="LT">
>         <param name="allowFullScreen" value="true">
>         <param name="menu" value="false"></object>
>
> 4) PROBLEM: Reported values for canvas dimensions in normal display  
> mode: canvas.width=500, canvas.height=400, but area covered by Flash  
> movie is 800x800. In case the debug window is visible it's sized for  
> the 500x400 dimension, but can be visibly dragged in an area of  
> about 800x600 pixels. Going into full screen canvas still reports  
> 500x400 pixels, debug window can be dragged in a larger area (around  
> 800x600)
> <canvas width="100%" height="100%"
> <object type="application/x-shockwave-flash"  
> data="fullscreen2.lzx.swf8.swf?lzproxied=false&width=500&height=4\
> 00" width="800" height="800">
>         <param name="movie" value="fullscreenexample/ 
> fullscreen2.lzx.swf8.swf?lzproxied=false">
>         <param name="quality" value="high">
>         <param name="scale" value="noscale">
>         <param name="salign" value="LT">
>         <param name="allowFullScreen" value="true">
>         <param name="menu" value="false"></object>
>
> 5) PROBLEM: Application initially has dimension of 800x800, but  
> centering takes place based on the 600x600 values for canvas. oes  
> into full screen without any problems. The debug window resizes (if  
> visible) on maximizing, but seems to miss the minimize event and  
> stays large
> <canvas width="600" height="600"
> <object type="application/x-shockwave-flash"  
> data="fullscreen2.lzx.swf8.swf?lzproxied=false" width="800" heigh\
> t="800">
>         <param name="movie" value="fullscreenexample/ 
> fullscreen2.lzx.swf8.swf?lzproxied=false">
>         <param name="quality" value="high">
>         <param name="scale" value="noscale">
>         <param name="salign" value="LT">
>         <param name="allowFullScreen" value="true">
>         <param name="menu" value="false"></object>
>
> Does this make the situation clearer? I did all this testing to make  
> sure everyone has the right understanding of how apps behave.
>
> On Jul 21, 2009, at 5:09 PM, Max Carlson wrote:
>
>> It seems full screen mode shows the application at the size  
>> specified by the developer. If resizing is desired, percentage  
>> values should be used for width/height - whether specified in the  
>> query string, html embedding code, orcoming from the canvas.
>>
>> -----Original Message-----
>> From: Raju Bitter <rajubitter at me.com>
>> Sent: Monday, July 20, 2009 2:59 PM
>> To: P T Withington <ptw at pobox.com>
>> Cc: Max Carlson <max at laszlosystems.com>; Laszlo-dev bug reporting <laszlo-dev at openlaszlo.org 
>> >
>> Subject: Re: [Laszlo-dev] Query args width and height processed by  
>> LaszloCanvas.lzs#construct()
>>
>> Yes, I know that the LaszloCanvas code is looking for those args.
>> Isn't it like there are 4 sources for the width/height value?
>>
>> 1) canvas attributes
>> 2) embedding code
>> 3) query args for SWF file
>> 4) default values 400/400, in case the query args contain an invalid
>> value
>>
>> But what you are saying means: if a developer wants to use full  
>> screen
>> feature, he must take caution not pass any values for width and  
>> height
>> into the app at runtime, or full screen mode might not auto-adjust  
>> the
>> canvas size.
>>
>>
>> On Jul 20, 2009, at 5:18 PM, P T Withington wrote:
>>
>>> 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 t
>>
>> [The entire original message is not included]
>



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