// Required by fcitx. Adds our file descriptor (for the tablet) to its
// fd_set, so we can get notified about new tablet input
void FcitxTabletSetFd(void* arg) {
FcitxTablet* tablet = (FcitxTablet*) arg;
int fd = tablet->driverInstance->GetDescriptor(tablet->driverData);
if(fd > 0) {
FD_SET(fd, FcitxInstanceGetReadFDSet(tablet->fcitx));
if(FcitxInstanceGetMaxFD(tablet->fcitx) < fd)
FcitxInstanceSetMaxFD(tablet->fcitx, fd);
}
// also add the timeout FD
FD_SET(tablet->timeoutFd, FcitxInstanceGetReadFDSet(tablet->fcitx));
if(FcitxInstanceGetMaxFD(tablet->fcitx) < tablet->timeoutFd)
FcitxInstanceSetMaxFD(tablet->fcitx, tablet->timeoutFd);
}
void RemoteSetFD(void* arg)
{
FcitxRemote* remote = (FcitxRemote*) arg;
FD_SET(remote->socket_fd, FcitxInstanceGetReadFDSet(remote->owner));
if (FcitxInstanceGetMaxFD(remote->owner) < remote->socket_fd)
FcitxInstanceSetMaxFD(remote->owner, remote->socket_fd);
}
void CloudPinyinSetFD(void* arg)
{
FcitxCloudPinyin* cloudpinyin = (FcitxCloudPinyin*) arg;
FcitxInstance* instance = cloudpinyin->owner;
int maxfd = cloudpinyin->pipeRecv;
FD_SET(maxfd, FcitxInstanceGetReadFDSet(instance));
if (maxfd > FcitxInstanceGetMaxFD(instance))
FcitxInstanceSetMaxFD(instance, maxfd);
}
void X11SetFD(void* arg)
{
FcitxX11* x11priv = (FcitxX11*)arg;
int fd = ConnectionNumber(x11priv->dpy);
FD_SET(fd, FcitxInstanceGetReadFDSet(x11priv->owner));
if (FcitxInstanceGetMaxFD(x11priv->owner) < fd)
FcitxInstanceSetMaxFD(x11priv->owner, fd);
}
void DBusSetFD(void* arg)
{
FcitxDBus* dbusmodule = (FcitxDBus*) arg;
FcitxInstance* instance = dbusmodule->owner;
fd_set *rfds = FcitxInstanceGetReadFDSet(instance);
fd_set *wfds = FcitxInstanceGetWriteFDSet(instance);
fd_set *efds = FcitxInstanceGetExceptFDSet(instance);
DBusUpdateFDSet(dbusmodule->watches, rfds, wfds, efds);
}
void DBusProcessEvent(void* arg)
{
FcitxDBus* dbusmodule = (FcitxDBus*) arg;
FcitxInstance* instance = dbusmodule->owner;
fd_set *rfds = FcitxInstanceGetReadFDSet(instance);
fd_set *wfds = FcitxInstanceGetWriteFDSet(instance);
fd_set *efds = FcitxInstanceGetExceptFDSet(instance);
DBusProcessEventForWatches(dbusmodule->watches, rfds, wfds, efds);
DBusProcessEventForConnection(dbusmodule->conn);
DBusProcessEventForConnection(dbusmodule->privconn);
}
void CloudPinyinProcessEvent(void* arg)
{
FcitxCloudPinyin* cloudpinyin = (FcitxCloudPinyin*) arg;
FcitxInstance* instance = cloudpinyin->owner;
if (!FD_ISSET(cloudpinyin->pipeRecv, FcitxInstanceGetReadFDSet(instance)))
return;
char c;
while (read(cloudpinyin->pipeRecv, &c, sizeof(char)) > 0);
pthread_mutex_lock(&cloudpinyin->finishQueueLock);
CurlQueue* queue;
queue = cloudpinyin->finishQueue;
/* this queue header is empty, so the check condition is "next" not null */
while (queue->next != NULL)
{
/* remove pivot from queue, thus pivot need to be free'd in HandleRequest */
CurlQueue* pivot = queue->next;
queue->next = queue->next->next;
CloudPinyinHandleRequest(cloudpinyin, pivot);
}
pthread_mutex_unlock(&cloudpinyin->finishQueueLock);
}
// Called when we wake up from select, i.e. the tablet has data to read
void FcitxTabletProcess(void* arg) {
static struct itimerspec empty_timer = { {0, 0}, {0, 0} };
FcitxTablet* tablet = (FcitxTablet*) arg;
int fd = tablet->driverInstance->GetDescriptor(tablet->driverData);
// Check we woke up for the right reason
if(fd > 0 && FD_ISSET(fd, FcitxInstanceGetReadFDSet(tablet->fcitx))) {
{ // first read a packet from the raw device
int n = 0;
const int pktsize = tablet->driverInstance->packet_size;
do {
n += read(fd, &tablet->driverPacket[n], pktsize - n);
} while(n < pktsize);
}
boolean redraw = false;
{ // then send it to the driver to convert into events
FcitxTabletDriverEvent e;
pt_t pt;
while((e = tablet->driverInstance->GetEvent(tablet->driverData, tablet->driverPacket, &pt)) != EV_NONE) {
// if the tablet did anything, cancel the timer
timerfd_settime(tablet->timeoutFd, 0, &empty_timer, NULL);
switch(e) {
case EV_PENDOWN:
if(tablet->timeoutCommitPending) {
FcitxInstanceProcessKey(tablet->fcitx, FCITX_PRESS_KEY, 0, FcitxKey_VoidSymbol, IME_COMMIT);
tablet->timeoutCommitPending = false;
}
break;
case EV_PENUP: {
// push an invalid (end-of-stroke) point
pt_t p = PT_INVALID;
PushCoordinate(tablet, p);
// get the IME to re-run the recognition engine
FcitxInstanceProcessKey(tablet->fcitx, FCITX_PRESS_KEY, 0, FcitxKey_VoidSymbol, IME_RECOGNISE);
// start the stroke commit timer
timerfd_settime(tablet->timeoutFd, 0, &tablet->delay, NULL);
} break;
case EV_POINT: {
// If it's not shown already, show the character drawing window
if(tablet->strokesPtr > tablet->strokesBuffer && PT_ISVALID(tablet->strokesPtr[-1]) && PT_ISVALID(pt)) { //we have at least 2 valid new points
// draw the line, scaling for the size of the window
XDrawLine(tablet->xDisplay, tablet->xWindow, tablet->xGC,
tablet->strokesPtr[-1].x * (float) tablet->xWidth / (float) tablet->driverInstance->x_max,
tablet->strokesPtr[-1].y * (float) tablet->xHeight / (float) tablet->driverInstance->y_max,
pt.x * (float) tablet->xWidth / (float) tablet->driverInstance->x_max,
pt.y * (float) tablet->xHeight / (float) tablet->driverInstance->y_max);
redraw = true;
}
PushCoordinate(tablet, pt);
} break;
default:
FcitxLog(ERROR, "Driver returned unknown event: %d", e);
break;
}
}
}
if(redraw) { // draw the stroke on the screen
// If it's not shown already, map the win
XMapWindow(tablet->xDisplay, tablet->xWindow);
XFlush(tablet->xDisplay);
}
FD_CLR(fd, FcitxInstanceGetReadFDSet(tablet->fcitx));
}
if(FD_ISSET(tablet->timeoutFd, FcitxInstanceGetReadFDSet(tablet->fcitx))) {
// the timer expired. Set the flag so that the next pendown will commit the most likely character
tablet->timeoutCommitPending = true;
timerfd_settime(tablet->timeoutFd, 0, &empty_timer, NULL);
FD_CLR(tablet->timeoutFd, FcitxInstanceGetReadFDSet(tablet->fcitx));
}
}