-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 05/19/10 20:51, Ping Cheng wrote: > On Wed, May 19, 2010 at 5:26 PM, Rafi Rubin <rafi@xxxxxxxxxxxxxx> wrote: >> -----BEGIN PGP SIGNED MESSAGE----- >> Hash: SHA1 >> >> On 05/19/10 20:13, Ping Cheng wrote: >>> On Wed, May 19, 2010 at 4:34 PM, Rafi Rubin <rafi@xxxxxxxxxxxxxx> wrote: >>>> My understanding is that it would be more like >>>> + SYN_MT_SLOT 0 >>>> + ABS_MT_POSITION_X x >>>> + ABS_MT_POSITION_Y y >>>> + SYN_REPORT >>>> + SYN_MT_SLOT 0 >>>> + ABS_MT_POSITION_X x >>>> + ABS_MT_POSITION_Y y >>>> + SYN_REPORT >>>> + SYN_MT_SLOT 0 >>>> + ABS_MT_POSITION_X x >>>> + ABS_MT_POSITION_Y y >>>> + SYN_MT_SLOT 1 >>>> + ABS_MT_POSITION_X x >>>> + ABS_MT_POSITION_Y y >>>> + SYN_REPORT >>> >>> You are right if one slot only has or is only allowed to have one >>> point. My scenario is that one slot can have more than one point. >>> Basically, my intention is to utilize the MT_SLOT and MT_TRACKING_ID >>> in such a way that it avoids as much overlap as possible. >>> >>> And hopefully it makes sesne in the reality too. >> >> Please clarify by what you mean by more than one point. > > I might have been confused myself by ABS_MT_BLOB_ID and SYN_MT_SLOT > here. What I meant by "more than one point" is a contact (or touch, I > am not sure which one is the right term :) is represented by a few > (x,y) coordinates. Maybe we should use SYN_MT_SLOT for my case? > >> I may be misunderstanding, but I thought that these slots are basically a >> superior replacement to tracking id. >> >> one finger -> one slot > > This is what I needed to understand. Is slot for one (x,y) only or can > it also be used for more than one set of (x,y)? > >> But with slots we can use the filtering that input provides, which we've been >> by-passing with the existing MT protocol (at least that's what I think Henrik's >> goal is). > > Good to know that filtering has already been considered. I know I must > be out of sync with Henrik's goal. That's why I wanted to show my > ignorance :). > > Ping > Hey, sometimes Mark Twain's old advice is good, and sometimes its not. It's better to keep your mouth shut and be thought a fool than to open it and leave no doubt. --Mark Twain I think this is definitely a case where he's wrong. We need to sync up so that we're all implementing the same protocol, and can move on to the next interesting problem. Rafi -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkv0ik4ACgkQwuRiAT9o608XmQCdFiTOymC+OEVyQ+atbEdpCiDd RRYAoIsNpOZpI0Yxr4BG1uEj7Fja2Fyo =lK01 -----END PGP SIGNATURE----- -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
