On 12/20/2017 04:54 PM, Christoph R. Murauer wrote: > Hello Ulf ! > >> there seems to be a terminology problem here: Usually, >> "pinch gesture" refers to an input with two touches moving >> toward each other, or away from each other, and it doesn't >> involve keyboard input. Our drivers don't support these >> gestures. Many applications permit to zoom in and out by >> holding the Ctrl key down and scrolling simultaneously. Is >> this what you mean? It should work with any application >> that implements it, for the driver, it's just scrolling. > > Yes, it is what I meaned. I know it from Mac OS X as gestures or 2 > finger gestures (or some varaiants of it, depends where you read about > it) for zoom in and out without holding a key. As I configured > synaptics / synclient the first time I came across a posting where it > was called pinch to zoom (Ctrl and move 2 fingers). See below for > details. > >> As to tapping, what you describe sounds weird, but maybe it >> isn't: During tests with a MacBookPro8,2 I observed that >> tapping with much force may fail because the hardware reports >> coordinates that oscillate in a range that is beyond the >> distance limit for tapping (that is, if the distance between >> the origin and the end point of a touch exceeds a certain >> threshold, it isn't treated as tap). I increased that limit >> then, but possibly it's still too low for that hardware. > > Not to force, it is like as if there are dead areas. See below for > details. > >> Can you check whether tapping without force works better, and >> also test it with the synaptics driver (which has a much higher >> threshold)? > > I tried today a 6.2 -release for synaptics using fvwm(1) and > qutebrowser. Tapping was set using synclients synclient TapButton1=1 > (setting tapping using wsconsctl(8) had no effect). Tapping works in > the whole area of the touchpad without problems. Zoom in and out using
If tapping works in that configuration, then it's likely that this is a problem with the distance limit. However, more information would be necessary to verify this, please see below. > the Ctrl key and 2 fingers (only diagonal - see below) worked also. It > was better then on the ThinkPad but makes also not really happy. > > Then I tried 6.2 -current from Dec 18 also with fvwm(1) and qutebrowser. > Tapping was set using wsconsctl(8) - as described in a email before. > Increasing the threshold makes tapping more easy but there are still Sorry, I cannot follow, which threshold did you increase in which configuration? > dead areas on the touchpad. In the snapshot from Dec 17 tapping was > only possible in the corners and the middle of the touchpad - the > field between them was dead. With this snapshot the dead area is > smaller but still there. Zoom in and out using Ctrl and 2 fingers had > absolutly no effect which I can reproduce. 2 or 3 times I could > accidently zoom 1 step but not more. My impression was, as if there is > a zoom area which is outside (on the right side) of the touchpad > (sorry, I have no better description). Are you moving diagonally when you are trying to "zoom"? Please note that wsmouse will only generate scroll events if you are moving vertically or horizontally, it ignores diagonal two-finger movements. And if the touchpad provides multitouch data - which is the case with MacBooks - then both fingers must move in parallel. These conditions may be strict, but they help to avoid accidental scroll events when you perform other two-finger gestures. Moreover, it ensures that the document position in a viewer always remains stable on one axis, which is probably more often the desired behaviour than scrolling on both axes simultaneously (and BTW, I haven't encountered an application that required "two-dimensional" scroll inputs for the Ctrl+<Scrolling> way of zooming in and out, it wouldn't work with a normal mouse wheel). > > I was curious and installed xfce (no extras) as xfce's composting > provides a internal magnifier using the alt (no typo) key and the > mouse wheel to zoom in and out everywhere. Tested with a mouse works > as it should. Tested with the touchpad and ws(4) works very smooth / > perfect BUT using the alt key and move 2 fingers (only vertical not as > normal diagonal) vertical to zoom in and out. Please see above. > > Let me know, if you need more informations. > If you don't mind further tests, I would like to verify my assumptions concerning the tapping problem. However, maybe we shouldn't spam the list with the details of the procedure, I will explain them in an off- list mail. > Regards, > > Christoph > > > > > > >
