<div dir="ltr">Hi,<div>thanks for the information.<div style>I signaled that i have a REL_WHEEL via</div><div style>-------------------<br></div><div style>ioctl(file_descriptor, UI_SET_EVBIT, EV_REL);<br></div><div style>
ioctl(file_descriptor, UI_SET_RELBIT, REL_WHEEL);</div><div style>-------------------</div><div style>and i can send REL_WHEEL events that are interpreted as mouse-wheel-"ticks" but not as the smooth scrolling input i wanted.</div>
<div style>Any error i made?</div><div style><br></div><div style>Some furhter information:</div><div style>I test via scrolling in a GTK+ 3 application that supports smooth scrolling via touchpad.</div><div style><br></div>
<div style>(evdev is version 2.7.0 and HAVE_SMOOTH_SCROLLING is also correctly defined as 1 in the source of my package).</div></div><div style>Relevant part of my source regarding the scrolling:</div><div style>-------------------</div>
<div style><div>int uinput_gerbil_setup (void) {</div><div> uinput_gerbil_fd = open("/dev/uinput", O_WRONLY);</div><div> </div><div> if (uinput_gerbil_fd < 0) {</div><div> perror("open(\"/dev/uinput\")");</div>
<div> return 1;</div><div> }</div><div><br></div><div> /* set input device capabilities */</div><div> ioctl(uinput_gerbil_fd, UI_SET_EVBIT, EV_SYN);</div><div> ioctl(uinput_gerbil_fd, UI_SET_EVBIT, EV_REL);</div>
<div> ioctl(uinput_gerbil_fd, UI_SET_RELBIT, REL_X);</div><div> ioctl(uinput_gerbil_fd, UI_SET_RELBIT, REL_Y);</div><div> ioctl(uinput_gerbil_fd, UI_SET_RELBIT, REL_WHEEL);</div><div> ioctl(uinput_gerbil_fd, UI_SET_EVBIT, EV_KEY);</div>
<div> ioctl(uinput_gerbil_fd, UI_SET_KEYBIT, BTN_MOUSE);</div><div> ioctl(uinput_gerbil_fd, UI_SET_KEYBIT, BTN_TOUCH);</div><div> ioctl(uinput_gerbil_fd, UI_SET_KEYBIT, BTN_TOOL_DOUBLETAP);</div><div><br></div><div>
<br></div><div> struct uinput_user_dev dev = {.name = "Gerbil Mouse"};</div><div> write(uinput_gerbil_fd, &dev, sizeof(dev));</div><div> </div><div> /* create input device */</div><div> ioctl(uinput_gerbil_fd, UI_DEV_CREATE);</div>
<div><br></div><div> return 0;</div><div>}</div><div><br></div><div>void uinput_gerbil_scroll(int val){</div><div><br></div><div> struct input_event ev = {.type = EV_REL, .code = REL_WHEEL, .value = val};</div><div>
uinput_gerbil_write(ev);</div><div> uinput_gerbil_sync();</div><div>}</div><div>-------------------<br></div></div><div style><br></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">2013/5/5 Peter Hutterer <span dir="ltr"><<a href="mailto:peter.hutterer@who-t.net" target="_blank">peter.hutterer@who-t.net</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="HOEnZb"><div class="h5">On Sun, May 05, 2013 at 02:24:36AM +0200, Raphael Isemann wrote:<br>
> Hi everybody,<br>
><br>
> i use uinput for sending mouse-input from userland to emulate a mouse. Now<br>
> i want that the REL_WHEEL input is interpreted not as button-presses but<br>
> rather as a smooth/pixelperfect input.<br>
><br>
> According to that:<br>
> <a href="http://web.archiveorange.com/archive/v/gTLYUgTyEWhFANwI8KGH" target="_blank">http://web.archiveorange.com/archive/v/gTLYUgTyEWhFANwI8KGH</a> this is<br>
> supported in evdev since a while and i only need to mark the axis as<br>
> scrolling axis ("""Instead, let the<br>
> driver mark axes as scrolling axes as required.""").<br>
> But how can i mark the axes? Any hints on useful documentation on that<br>
> topic or other functions that allow to sent signals that are interpreted as<br>
> smooth scrolling are welcome.<br>
<br>
</div></div>if you have REL_WHEEL on a device, the evdev driver will mark that as a<br>
scrolling axis automatically. you don't have to do anything there.<br>
<br>
Cheers,<br>
Peter<br>
<br>
</blockquote></div><br></div>