Attachment 50294 Details for Bug 40156 – Test program to recreate the mouse pointer flickering problem

Test program to recreate the mouse pointer flickering problem

cursor_issue_xi2.c (text/x-csrc), 7.65 KB, created by buix0044 on 2011-08-16 19:31:05 UTC

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Creator: buix0044

Created: 2011-08-16 19:31:05 UTC

Size: 7.65 KB

patch

obsolete

>
>/*
> * cursor_issue_xi2.c
> *
> * To compile:
> *   gcc -o cursor_issue_xi2 `pkg-config --cflags --libs xi` cursor_issue_xi2.c
> *
> * To run:
> *   ./cursor_issue_xi2
> *
> * To re-create the mouse flickering problem:
> *   - Two mouse pointers appear on the screen
> *   - Move the core mouse, the virtual master mouse flicks
> *   - Move the virtual master mouse, the core mouse doesn't flick
> *   - press ESC key to exit and cleanup
> */
>
>/*
> * Configuration:
> *   - Two Keyboards and two Mice
> *   - Ubuntu 11.04, with Linux kernel version 2.6.38-10-generic-pae
> *   - X.org version 1.10.1
> *   - Quadro 600 video card, with HWCursor = "true" and SWCursor = "false"
> *   - Nvidia driver 280.13
> *
> *  NOTE: This problem can also be re-created with several other ATI video cards. 
> */
>
>#include <stdio.h>
>#include <stdlib.h>
>#include <string.h>
>#include <X11/Xlib.h>
>#include <X11/keysym.h>
>#include <X11/extensions/XInput2.h>
>#include <X11/cursorfont.h>
>
>int scrn_num;
>int scrn_depth;
>int scrn_height;
>int scrn_width;
>
>char master_name[] = "Master Test";
>int slaveptr_id = 0;
>int slavekbd_id = 0;
>int masterptr_id = 0;
>int masterkbd_id = 0;
>
>static Window create_win(Display *dpy)
>{
>    XIEventMask mask;
>
>    Window win = XCreateSimpleWindow(dpy, DefaultRootWindow(dpy), 0, 0, scrn_width,
>            scrn_height, 0, 0, WhitePixel(dpy, 0));
>
>    XSelectInput(dpy, win, ExposureMask);
>    mask.deviceid = XIAllMasterDevices;
>    mask.mask_len = XIMaskLen(XI_RawMotion);
>    mask.mask = calloc(mask.mask_len, sizeof(char));
>    XISetMask(mask.mask, XI_Enter);
>    XISetMask(mask.mask, XI_Leave);
>    XISetMask(mask.mask, XI_ButtonPress);
>    XISetMask(mask.mask, XI_ButtonRelease);
>    XISetMask(mask.mask, XI_KeyPress);
>    XISetMask(mask.mask, XI_KeyRelease);
>
>    XISelectEvents(dpy, win, &mask, 1);
>
>    mask.deviceid = XIAllDevices;
>    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 list_devices(Display *display, int deviceid)
>{
>    XIDeviceInfo *info, *dev;
>    int ndevices;
>    int i;
>    const char *type = "";
>
>    info = XIQueryDevice(display, deviceid, &ndevices);
>
>    for(i = 0; i < ndevices; i++) {
>        dev = &info[i];
>
>#ifdef DEBUG
>        printf("'%s' (%d)\n", dev->name, dev->deviceid);
>#endif
>        switch(dev->use) {
>            case XIMasterPointer:
>              type = "master pointer";
>              if (strstr(dev->name, master_name) != NULL)
>                masterptr_id = dev->deviceid;
>              break;
>            case XIMasterKeyboard:
>              type = "master keyboard";
>              if (strstr(dev->name, master_name) != NULL)
>                masterkbd_id = dev->deviceid;
>              break;
>            case XISlavePointer:
>              type = "slave pointer";
>              if ((strstr(dev->name, "Virtual core XTEST") == NULL) &&
>                  (strstr(dev->name, "emulation") == NULL))
>                slaveptr_id = dev->deviceid;
>              break;
>            case XISlaveKeyboard:
>              type = "slave keyboard";
>              if (strstr(dev->name, "Virtual core XTEST") == NULL)
>                slavekbd_id = dev->deviceid;
>              break;
>            case XIFloatingSlave: type = "floating slave"; break;
>        }
>
>#ifdef DEBUG
>        printf(" - is a %s\n", type);
>        printf(" - current pairing/attachment: %d\n", dev->attachment);
>        if (!dev->enabled)
>            printf(" - this device is disabled!\n");
>#endif
>    }
>
>    XIFreeDeviceInfo(info);
>}
>
>static void create_master(Display *dpy, int xi_opcode)
>{
>    XIAddMasterInfo add;
>    XIRemoveMasterInfo remove;
>    XEvent ev;
>    int new_master_id;
>
>    XIDeviceInfo *sd_info, *md_info;
>    XIAttachSlaveInfo c;
>
>    /* Create master */
>    add.type = XIAddMaster;
>    add.name = master_name;
>    add.send_core = True;
>    add.enable = True;
>
>    XIChangeHierarchy(dpy, (XIAnyHierarchyChangeInfo*)&add, 1);
>    XFlush(dpy);
>
>    /* Change attachment */
>    list_devices(dpy, XIAllMasterDevices);
>    if ((slaveptr_id > 0) && (slavekbd_id > 0) &&
>        (masterptr_id > 0) && (masterkbd_id > 0)) {
>      /* Attach pointer */
>      c.type = XIAttachSlave;
>      c.deviceid = slaveptr_id;
>      c.new_master = masterptr_id;
>      XIChangeHierarchy(dpy, (XIAnyHierarchyChangeInfo*)&c, 1);
>
>      /* Attach keyboard */
>      c.deviceid = slavekbd_id;
>      c.new_master = masterkbd_id;
>      XIChangeHierarchy(dpy, (XIAnyHierarchyChangeInfo*)&c, 1);
>    }
>}
>
>static void remove_master(Display *dpy, int xi_opcode)
>{
>    XIRemoveMasterInfo remove;
>    XIDeviceInfo *sd_info, *md_info;
>    XIAttachSlaveInfo c;
>    int ret = 0;
>
>    /* TBD */
>
>    if (masterptr_id > 0) {
>      printf("Removing new master devices. %d\n", masterptr_id);
>      remove.type = XIRemoveMaster;
>      remove.deviceid = masterptr_id;
>      remove.return_mode = XIAttachToMaster;
>      remove.return_pointer = 2;
>      remove.return_keyboard = 3;
>
>      XIChangeHierarchy(dpy, (XIAnyHierarchyChangeInfo*)&remove, 1);
>    }
>}
>
>int main (int argc, char **argv)
>{
>    Display *dpy;
>    int xi_opcode, event, error;
>    Window win;
>    XEvent ev;
>    Pixmap pixmap;
>    XGCValues gcv;
>    GC sd_gc;               /* Situation Dsply Graphics Context  */
>    KeySym keysym;
>    XIDeviceEvent *xi2ev;
>
>    dpy = XOpenDisplay(NULL);
>
>    if (!dpy) {
>        fprintf(stderr, "Failed to open display.\n");
>        return -1;
>    }
>
>    scrn_num = DefaultScreen(dpy);
>    scrn_depth = DefaultDepth(dpy, scrn_num);
>    scrn_width = DisplayWidth(dpy, scrn_num);
>    scrn_height = DisplayHeight(dpy, scrn_num);
>    scrn_width = 500;
>    scrn_height = 500;
>
>    if (argc > 1) {
>      sscanf(argv[1], "w=%d:h=%d", &scrn_width, &scrn_height);
>    }
>
>    if (!XQueryExtension(dpy, "XInputExtension", &xi_opcode, &event, &error)) {
>           printf("X Input extension not available.\n");
>              return -1;
>    }
>
>    win = create_win(dpy);
>
>    pixmap = XCreatePixmap(dpy, win, scrn_width, scrn_height, scrn_depth);
>    /* Create situation display graphics context                             */
>    gcv.foreground = BlackPixel(dpy, scrn_num);
>    gcv.background = WhitePixel(dpy, scrn_num);
>    gcv.graphics_exposures = 0;
>    sd_gc = XCreateGC(dpy, win,
>     (GCForeground | GCBackground | GCGraphicsExposures), &gcv);
>    XFillRectangle(dpy, pixmap, sd_gc, 0, 0, scrn_width, scrn_height);
>
>    list_devices(dpy, XIAllDevices);
>    remove_master(dpy, xi_opcode);
>    list_devices(dpy, XIAllDevices);
>    create_master(dpy, xi_opcode);
>    list_devices(dpy, XIAllDevices);
>
>    while(1)
>    {
>        XGenericEventCookie *cookie = &ev.xcookie;
>
>        XNextEvent(dpy, &ev);
>        if (cookie->type != GenericEvent ||
>            cookie->extension != xi_opcode ||
>            !XGetEventData(dpy, cookie))
>            continue;
>#ifdef DEBUG
>        printf("EVENT TYPE %d\n", cookie->evtype);
>#endif
>        if (cookie->evtype == XI_KeyPress) {
>          xi2ev = cookie->data;
>          keysym = XKeycodeToKeysym(dpy, (KeyCode)xi2ev->detail, 0);
>          if (keysym == XK_Escape) {
>            remove_master(dpy, xi_opcode);
>            break;
>          }
>#ifdef DEBUG
>          else
>            printf ("KeyPress ------- %c\n", keysym);
>#endif
>        }
>
>        XCopyArea(dpy, pixmap, win, sd_gc, 0, 0, scrn_width - 40, scrn_height - 70, 20, 50);
>        {
>          char str1[] = "- Move the core cursor - the virtual master cursor blinks.";
>          char str2[] = "- Press ESC key to exit.";
>          XDrawString(dpy, win, sd_gc, 10, 10, str1, strlen(str1));
>          XDrawString(dpy, win, sd_gc, 10, 25, str2, strlen(str2));
>        }
>        XFlush(dpy);
>        XFreeEventData(dpy, cookie);
>    }
>
>    XCloseDisplay(dpy);
>    return 0;
>}
>

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Attachments on bug 40156: 50294

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