On Tue, Aug 31, 2010 at 12:44 AM, Peter Hutterer <peter.hutte...@who-t.net> wrote: > On Wed, Aug 25, 2010 at 06:28:53PM +0200, Ping Cheng wrote: >> On Wed, Aug 25, 2010 at 5:04 PM, Chris Bagwell <ch...@cnpbagwell.com> wrote: >> > Sure, I'll jump back in once the touch-only model support is >> > committed. Assuming Henrik's patch is submit, there is some things to >> > discuss on X side; which I will be happy to help with as well. >> >> Thank you for your help. >> >> > Henrik's current driver on linux-input is both MT and synaptic-like; >> > which is actually my preference as well but brings up important issue. >> > Do we modify xf86-input-wacom to be compatible with synpatic-like >> > input events or do we work with distributions to develop rules to >> > re-direct wacom "touch" input devices over to xf86-input-synaptics? >> >> I'd like to know Peter's answer to this question. It is not purely a >> Wacom driver decision, I think. > > AFAICT, the device is exported as a separate device, right? If so, there's > no need to hook the wacom driver onto it - we just treat it as a touchpad > and hook the synaptics driver onto it. >
Yes, on both Bamboo's and Tablet PC's, the exported device is nicely isolated. In Bamboo's case, its very much like a standard touchpad (x/y/pressure+4 buttons). For Tablet PC's, its very much like a buttonless touchpad. Some pros/cons for having xf86-input-synaptics handle wacom touch devices. Pros: * Get synaptics gesture support immediately (edge scrolling, two finger scrolling). * Get gnome-mouse-properties (and similar) GUI configuration support (I can finally enable Lefty mode from a GUI!) * It will force us to be Synaptics compatible. This allows switching to xf86-input-multitouch driver and get their gestures (swipes, pinching, 3-fingers, etc). Or at least it keeps us closer to compatible to what ever client-side gesture engines are coming up. Cons: * ISDV4 devices requires some touchpad logic in xf86-input-wacom anyways (not a code savings) * User would lose xf86-input-wacom's advanced button remapping. My suggestion? * Make touchpad-like wacom devices to use events that are synaptics-like (no multiplexing, no serial/channel #'s, change way BTN_TOOL_*'s are used, use MT events for 2 finger HW, etc). This means specifically Bamboo and Tablet PC's. Since Tablet PC code has already shipped in a kernel, we need a roadmap of how and when to convert over. * Modify xf86-input-wacom so that it can handle todays ISDV4/TabletPC version of touchpads and also make it compatible with synaptics-like touchpads. Since its backwards/forwards compatible, that roadmap for TabletPC can be change it today. * Decide which X driver we prefer as default and then let user do any xorg.conf.d modifications if they prefer a specific pro/con item above. Chris ------------------------------------------------------------------------------ This SF.net Dev2Dev email is sponsored by: Show off your parallel programming skills. Enter the Intel(R) Threading Challenge 2010. http://p.sf.net/sfu/intel-thread-sfd _______________________________________________ Linuxwacom-devel mailing list Linuxwacom-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxwacom-devel
