[maemo-developers] Howto enable portrait mode support on Fremantle

[From: Graham Cobb]

On Friday 21 August 2009 14:26:33 Andrew Flegg wrote:
> My interpretation:
>
>   * You set HILDON_PORTRAIT_MODE_SUPPORT _if_ the device is portrait
>     _before_ you open a window.

Why?  What happens if the device is portrait before you open a window and you 
don't set HILDON_PORTRAIT_MODE_SUPPORT?

And is there some sort of race condition here?

>   * You pick up events (DBus or size-changed depending on whether
>     you need orientation or just aspect) and then explicitly
>     set HILDON_PORTRAIT_MODE_REQUEST.

So HILDON_PORTRAIT_MODE_REQUEST tells all the widgets in the window to please 
rearrange themselves for portrait mode (if they support that)?

>   function void setPortraitFlagsIfAppropriate(window) {
>     if (isPortrait())
>       window.set(HILDON_PORTRAIT_SUPPORT | HILDON_PORTRAIT_REQUEST)
>     else
>       window.unset(HILDON_PORTRAIT_SUPPORT | HILDON_PORTRAIT_REQUEST)
>   }

So, why are there two flags?  I still don't understand what 
HILDON_PORTRAIT_MODE_SUPPORT does.

Sorry to be so dumb -- I keep telling people I am not a GUI guy!

Graham