Kimmo, thanks for the clarification! I´ll update the wiki article accordingly!
Thanks! Conny Kimmo Hämäläinen wrote: > On Fri, 2009-08-21 at 15:53 +0200, ext Alberto Garcia wrote: >> On Fri, Aug 21, 2009 at 02:53:01PM +0200, Cornelius Hald wrote: >> >> I'll try to summarize how it works (I'm adding Kimmo to Cc in case I'm >> forgetting something, as the rotating itself is done by the desktop, >> libhildon only sets a WM hint). >> >> Let's suppose we open a new window. Before we open that window the >> device might already be in portrait mode. >> >> If the portrait flags of the new window are: >> >> 1) No flags -> The screen is rotated to landscape mode. > > Correct. An example: when you are in portrait mode and suddenly a > system-modal dialog pops up without the SUPPORT or REQUEST flag, we go > to the landscape mode. > >> 2) _SUPPORT -> The screen keeps its orientation. > > Correct ...unless some window has the REQUEST flag. The SUPPORT flag on > your window tells that you support the portrait mode, i.e. your window > can relayout itself for the portrait mode. The REQUEST flag on your > window tells that you want to be in the portrait mode (for whatever > reason, not necessarily just because the device is currently in portrait > orientation!). Hildon-desktop is not turning the screen to portrait > unless there is at least one visible window with REQUEST and the rest of > the visible windows have the SUPPORT (explicit or implicit) flag. These > flags are inherited to transient windows, and REQUEST implies the > SUPPORT flag. > >> 3) _SUPPORT + _REQUEST -> The screen is rotated to portrait mode >> 4) _REQUEST alone -> I don't think we're using that. Kimmo? > > REQUEST is the same as REQUEST + SUPPORT. Since there is no sense to > request the portrait mode if you don't support it... > >> To detect whether a device is physically rotated I think you need to >> use the DBus API already mentioned in this thread. > > Correct, the sig_device_orientation_ind signal from MCE. > >> In other words: using this API alone won't change the orientation of >> the screen when the device is physically rotated, am I right Kimmo? > > Hildon-desktop looks at these flags, it does not listen to the > orientation signals, so it does not know how the device is oriented > relative to the Earth's crust. (There is an exception to this, but you > are not affected by it.) > > -Kimmo > >> Berto > > _______________________________________________ > maemo-developers mailing list > maemo-developers@maemo.org > https://lists.maemo.org/mailman/listinfo/maemo-developers _______________________________________________ maemo-developers mailing list maemo-developers@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-developers
