RE: Live Touchscreen Calibration [WAS: magictouch touch screen driver]
Hi, actually a great thing to have, but not that easy. The main problem is, that the driver itself has to be disabled. - this can be solved by quitting X and doing a calibration with touchcal - the other possibility is (I don't know how) to disable the driver while running X and then doing the calibration. and finally enable the driver again Maybe this is not possible. There is no function to disable a pointer device while running X. So you could add a feedback function to gain access to the driver and have a enable/disable routine. Veikko -Original Message- From: Fred Gleason [mailto:[EMAIL PROTECTED] Sent: Thursday, June 09, 2005 7:10 AM To: devel@XFree86.Org Subject: Live Touchscreen Calibration [WAS: magictouch touch screen driver] On Tuesday 07 June 2005 16:04, Tristan Van Berkom wrote: Since touchscreen drivers seem to be getting back in style, maybe we should write up some live calibration support ;-) I'm game. I've actually been toying with the idea of doing something like this for the ELO drivers for some time. Before I go charging off and reinventing the wheel, does anything simiklar to this exist already? Ideally, it should be sufficiently generic that any input device that uses absolute coordinates will be able to use it. Cheers! |- | | Frederick F. Gleason, Jr. | Director of Broadcast Software Development | | | Salem Radio Labs | |- | | Easiest Color to Solve on a Rubik's Cube: | |Black. Simply remove all the little colored stickers on the | | cube, and each of side of the cube will now be the original color of| | the plastic underneath -- black. According to the instructions, this | | means the puzzle is solved. | |-- Steve Rubenstein | |- | ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel
Re: Live Touchscreen Calibration [WAS: magictouch touch screen driver]
Hi, I don't think a functionality like this is really necessary. A calibration utility is started by a user once to find the mapping from touchscreen coordinates to real screen. In general it is a matrix doing shifting, stretching and rotating. To use scrn-currentMode is from my perspective not a hack. What can this function do more than reading these fields from screen structure. Another question is, what should be done in case of changing geometry? Automatically adjust the matrix? That is a 90% solution. What about external scaling facilities? Letter box display? IMHO, this should be done by userland program using DeviceControl. Best Regards Damian [EMAIL PROTECTED] wrote on 10.06.2005 01:00:54: It would be great if you could add that... what do you mean by live calibration ? It seems to me that calibration should be (mostly) a userland utility, that you do not want to run everytime the Xserver starts. I probably misunderstood what you meant. My only issue currently, is that if resolution changes, the mapping from touchscreen coords to screen coords changes, thus the touchscreen driver should be able to be notified, or query what the actual screen resolution is. The trick mentioned previsously about querying the current modeline would work, but it's a hack... something cleaner (portable, etc.) would be nicer. I admit I do not know the specifics of touchpad/stylus support, but I imagine that is also the only dynamic/live resolution support that would be necessary ? Something like XFGetCurrentMonitorResolution(displayID, width, height) ... BTW, I submitted the source for the magictouch driver on this mailling list, is there any chance it will appear in the XFree86 tree someday ? If a comitter needs changes, fixes to it or has questions, I'll be happy to help as I can. bruno On Thu, 9 Jun 2005, Fred Gleason wrote: On Tuesday 07 June 2005 16:04, Tristan Van Berkom wrote: Since touchscreen drivers seem to be getting back in style, maybe we should write up some live calibration support ;-) I'm game. I've actually been toying with the idea of doing something like this for the ELO drivers for some time. Before I go charging off and reinventing the wheel, does anything simiklar to this exist already? Ideally, it should be sufficiently generic that any input device that uses absolute coordinates will be able to use it. Cheers! ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel
Re: Live Touchscreen Calibration [WAS: magictouch touch screen driver]
On Friday 10 June 2005 03:17, Veikko Werner wrote: actually a great thing to have, but not that easy. The main problem is, that the driver itself has to be disabled. Why so? AFAICT, we basically need two things: 1) The ability to get 'raw' --i.e. unscaled -- data from the device during the calibration run. 2) Some way to set the calibration parameters of the driver based on the results of 1). Both of these could be accomplished by means of adding appropriate new methods to each driver. While I suppose this does involve effectively 'disabling' the driver for the duration of the calibration run, this fact can be completely hidden from the server. The server merely doesn't receive pointer updates while calibration is in progress. Or am I missing something here? Cheers! |-| | Frederick F. Gleason, Jr. | Director of Broadcast Software Development | | | Salem Radio Labs| |-| | Logic is a way to go wrong with confidence. | | --Robert Heinlein | | The Notebooks of Lazarus Long | |-| ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel
Re: Live Touchscreen Calibration [WAS: magictouch touch screen driver]
On Thu, Jun 09, 2005 at 04:00:54PM -0700, bruno schwander wrote: BTW, I submitted the source for the magictouch driver on this mailling list, is there any chance it will appear in the XFree86 tree someday ? If a comitter needs changes, fixes to it or has questions, I'll be happy to help as I can. I'm committing it now. Thanks for the submission. David ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel
Re: Live Touchscreen Calibration [WAS: magictouch touch screen driver]
On Fri, Jun 10, 2005 at 10:53:47AM -0400, Fred Gleason wrote: On Friday 10 June 2005 03:17, Veikko Werner wrote: actually a great thing to have, but not that easy. The main problem is, that the driver itself has to be disabled. Why so? AFAICT, we basically need two things: 1) The ability to get 'raw' --i.e. unscaled -- data from the device during the calibration run. 2) Some way to set the calibration parameters of the driver based on the results of 1). Both of these could be accomplished by means of adding appropriate new methods to each driver. While I suppose this does involve effectively 'disabling' the driver for the duration of the calibration run, this fact can be completely hidden from the server. The server merely doesn't receive pointer updates while calibration is in progress. Or am I missing something here? Sounds reasonable to me. The XInput extension could be enhanced to provide calibration requests which would be the mechanism for a calibration utility to communicate with the driver. The problem with most of the solutions I've seen for this so far is that they attempt to open a communication path directly between the driver and a calibration utility, often creating security problems. The X server already provides an authenticated mechanism for doing such things. David ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel
Re: Live Touchscreen Calibration [WAS: magictouch touch screen driver]
It would be great if you could add that... what do you mean by live calibration ? It seems to me that calibration should be (mostly) a userland utility, that you do not want to run everytime the Xserver starts. I probably misunderstood what you meant. My only issue currently, is that if resolution changes, the mapping from touchscreen coords to screen coords changes, thus the touchscreen driver should be able to be notified, or query what the actual screen resolution is. The trick mentioned previsously about querying the current modeline would work, but it's a hack... something cleaner (portable, etc.) would be nicer. I admit I do not know the specifics of touchpad/stylus support, but I imagine that is also the only dynamic/live resolution support that would be necessary ? Something like XFGetCurrentMonitorResolution(displayID, width, height) ... BTW, I submitted the source for the magictouch driver on this mailling list, is there any chance it will appear in the XFree86 tree someday ? If a comitter needs changes, fixes to it or has questions, I'll be happy to help as I can. bruno On Thu, 9 Jun 2005, Fred Gleason wrote: On Tuesday 07 June 2005 16:04, Tristan Van Berkom wrote: Since touchscreen drivers seem to be getting back in style, maybe we should write up some live calibration support ;-) I'm game. I've actually been toying with the idea of doing something like this for the ELO drivers for some time. Before I go charging off and reinventing the wheel, does anything simiklar to this exist already? Ideally, it should be sufficiently generic that any input device that uses absolute coordinates will be able to use it. Cheers! ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel
