Attachment 58533 Details for Bug 46976 – program illustrating the issue

program illustrating the issue

rawmotion.c (text/plain), 2.15 KB, created by rockorequin on 2012-03-15 19:35:41 UTC

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Creator: rockorequin

Created: 2012-03-15 19:35:41 UTC

Size: 2.15 KB

patch

obsolete

>// gcc rawmotion.c -o rawmotion -lXi
>#include <stdio.h>
>#include <stdlib.h>
>#include <string.h>
>#include <X11/Xlib.h>
>#include <X11/extensions/XInput2.h>
>
>static Window create_win(Display *dpy)
>{
>    XIEventMask mask;
>
>    Window win = XCreateSimpleWindow(dpy, DefaultRootWindow(dpy), 0, 0, 200,
>            200, 0, 0, WhitePixel(dpy, 0));
>
>    XSelectInput(dpy, win, ExposureMask);
>    mask.mask_len = XIMaskLen(XI_RawMotion);
>    mask.mask = calloc(mask.mask_len, sizeof(char));
>    mask.deviceid = XIAllMasterDevices;
>    memset(mask.mask, 0, mask.mask_len);
>    XISetMask(mask.mask, XI_RawMotion);
>
>    XISelectEvents(dpy, DefaultRootWindow(dpy), &mask, 1);
>
>    free(mask.mask);
>    XMapWindow(dpy, win);
>    XSync(dpy, True);
>    return win;
>}
>
>static void print_rawmotion(XIRawEvent *event)
>{
>    int i;
>    double *raw_value = event->raw_values,
>           *valuator = event->valuators.values;
>
>    printf("    device: %d (%d)", event->deviceid, event->sourceid);
>
>    for (i = 0; i < event->valuators.mask_len * 8; i++)
>    {
>        if (XIMaskIsSet(event->valuators.mask, i))
>        {
>            printf("  raw_value %d: %f [valuator %f] ", i, *raw_value, *valuator);
>            raw_value++;
>            valuator++;
>        }
>    }
>
>    printf("\n");
>}
>
>int main (int argc, char **argv)
>{
>    Display *dpy;
>    int xi_opcode, event, error;
>    Window win;
>    XEvent ev;
>
>    dpy = XOpenDisplay(NULL);
>
>    if (!dpy) {
>        fprintf(stderr, "Failed to open display.\n");
>        return -1;
>    }
>
>    if (!XQueryExtension(dpy, "XInputExtension", &xi_opcode, &event, &error)) {
>           printf("X Input extension not available.\n");
>              return -1;
>    }
>
>    win = create_win(dpy);
>
>    while(1)
>    {
>        XGenericEventCookie *cookie = &ev.xcookie;
>
>        XNextEvent(dpy, &ev);
>        if (cookie->type != GenericEvent ||
>            cookie->extension != xi_opcode ||
>            !XGetEventData(dpy, cookie))
>            continue;
>
>        switch(cookie->evtype)
>        {
>            case XI_RawMotion:
>                print_rawmotion(cookie->data);
>                break;
>        }
>
>        XFreeEventData(dpy, cookie);
>
>    }
>
>    XCloseDisplay(dpy);
>    return 0;
>}
>

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Attachments on bug 46976: 58055 | 58056 | 58461 | 58533

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