freeList for the event to be inserted.
NOTE: Interrupts MUST be OFF while this routine is called to ensure we have
- mutually exclusive access to our internal data structures for
- interrupt driven systems (like under DOS).
+ mutually exclusive access to our internal data structures for
+ interrupt driven systems (like under DOS).
****************************************************************************/
static void addEvent(
event_t *evt)
/* Check for mouse double click events */
if (evt->what & EVT_MOUSEEVT) {
- EVT.autoMouse_x = evt->where_x;
- EVT.autoMouse_y = evt->where_y;
- if ((evt->what & EVT_MOUSEDOWN) && !(evt->message & EVT_DBLCLICK)) {
- /* Determine if the last mouse event was a double click event */
- uint diff_x = ABS(evt->where_x - EVT.downMouse.where_x);
- uint diff_y = ABS(evt->where_y - EVT.downMouse.where_y);
- if ((evt->message == EVT.downMouse.message)
- && ((evt->when - EVT.downMouse.when) <= EVT.doubleClick)
- && (diff_x <= EVT.doubleClickThresh)
- && (diff_y <= EVT.doubleClickThresh)) {
- evt->message |= EVT_DBLCLICK;
- EVT.downMouse = *evt;
- EVT.downMouse.when = 0;
- }
- else
- EVT.downMouse = *evt;
- EVT.autoTicks = _EVT_getTicks();
- }
- else if (evt->what & EVT_MOUSEUP) {
- EVT.downMouse.what = EVT_NULLEVT;
- EVT.firstAuto = true;
- }
- }
+ EVT.autoMouse_x = evt->where_x;
+ EVT.autoMouse_y = evt->where_y;
+ if ((evt->what & EVT_MOUSEDOWN) && !(evt->message & EVT_DBLCLICK)) {
+ /* Determine if the last mouse event was a double click event */
+ uint diff_x = ABS(evt->where_x - EVT.downMouse.where_x);
+ uint diff_y = ABS(evt->where_y - EVT.downMouse.where_y);
+ if ((evt->message == EVT.downMouse.message)
+ && ((evt->when - EVT.downMouse.when) <= EVT.doubleClick)
+ && (diff_x <= EVT.doubleClickThresh)
+ && (diff_y <= EVT.doubleClickThresh)) {
+ evt->message |= EVT_DBLCLICK;
+ EVT.downMouse = *evt;
+ EVT.downMouse.when = 0;
+ }
+ else
+ EVT.downMouse = *evt;
+ EVT.autoTicks = _EVT_getTicks();
+ }
+ else if (evt->what & EVT_MOUSEUP) {
+ EVT.downMouse.what = EVT_NULLEVT;
+ EVT.firstAuto = true;
+ }
+ }
/* Call user supplied callback to modify the event if desired */
if (EVT.userEventCallback) {
- if (!EVT.userEventCallback(evt))
- return;
- }
+ if (!EVT.userEventCallback(evt))
+ return;
+ }
/* Get spot to place the event from the free list */
evtID = EVT.freeHead;
evt->next = -1;
evt->prev = EVT.tail;
if (EVT.tail != -1)
- EVT.evtq[EVT.tail].next = evtID;
+ EVT.evtq[EVT.tail].next = evtID;
else
- EVT.head = evtID;
+ EVT.head = evtID;
EVT.tail = evtID;
EVT.evtq[evtID] = *evt;
EVT.count++;
/* Build free list, and initialize global data structures */
for (i = 0; i < EVENTQSIZE; i++)
- EVT.evtq[i].next = i+1;
+ EVT.evtq[i].next = i+1;
EVT.evtq[EVENTQSIZE-1].next = -1; /* Terminate list */
EVT.count = EVT.freeHead = 0;
EVT.head = EVT.tail = -1;
/* Make sure the joystick is calibrated properly */
if (EVT.joyCenter[axis] - EVT.joyMin[axis] < 5)
- return raw;
+ return raw;
if (EVT.joyMax[axis] - EVT.joyCenter[axis] < 5)
- return raw;
+ return raw;
/* Now scale the coordinates to -128 to 127 */
raw -= EVT.joyCenter[axis];
if (raw < 0)
- range = EVT.joyCenter[axis]-EVT.joyMin[axis];
+ range = EVT.joyCenter[axis]-EVT.joyMin[axis];
else
- range = EVT.joyMax[axis]-EVT.joyCenter[axis];
+ range = EVT.joyMax[axis]-EVT.joyCenter[axis];
scaled = (raw * 128) / range;
if (scaled < -128)
- scaled = -128;
+ scaled = -128;
if (scaled > 127)
- scaled = 127;
+ scaled = 127;
return scaled;
}
#endif
#endif
mask = _EVT_readJoyAxis(EVT_JOY_AXIS_ALL,EVT.joyCenter);
if (mask) {
- for (i = 0; i < JOY_NUM_AXES; i++)
- EVT.joyMax[i] = EVT.joyCenter[i]*2;
- }
+ for (i = 0; i < JOY_NUM_AXES; i++)
+ EVT.joyMax[i] = EVT.joyCenter[i]*2;
+ }
return mask;
}
queue for later retrieval.
Note: Most analogue joysticks will provide readings that change even
- though the joystick has not moved. Hence if you call this routine
- you will likely get an EVT_JOYMOVE event every time through your
- event loop.
+ though the joystick has not moved. Hence if you call this routine
+ you will likely get an EVT_JOYMOVE event every time through your
+ event loop.
SEE ALSO:
EVT_getNext, EVT_peekNext, EVT_joySetUpperLeft, EVT_joySetLowerRight,
int i,axis[JOY_NUM_AXES],newButState,mask,moved,ps;
if (EVT.joyMask) {
- /* Read joystick axes and post movement events if they have
- * changed since the last time we polled. Until the events are
- * actually flushed, we keep modifying the same joystick movement
- * event, so you won't get multiple movement event
- */
- mask = _EVT_readJoyAxis(EVT.joyMask,axis);
- newButState = _EVT_readJoyButtons();
- moved = false;
- for (i = 0; i < JOY_NUM_AXES; i++) {
- if (mask & (EVT_JOY_AXIS_X1 << i))
- axis[i] = scaleJoyAxis(axis[i],i);
- else
- axis[i] = EVT.joyPrev[i];
- if (axis[i] != EVT.joyPrev[i])
- moved = true;
- }
- if (moved) {
- memcpy(EVT.joyPrev,axis,sizeof(EVT.joyPrev));
- ps = _EVT_disableInt();
- if (EVT.oldJoyMove != -1) {
- /* Modify the existing joystick movement event */
- EVT.evtq[EVT.oldJoyMove].message = newButState;
- EVT.evtq[EVT.oldJoyMove].where_x = EVT.joyPrev[0];
- EVT.evtq[EVT.oldJoyMove].where_y = EVT.joyPrev[1];
- EVT.evtq[EVT.oldJoyMove].relative_x = EVT.joyPrev[2];
- EVT.evtq[EVT.oldJoyMove].relative_y = EVT.joyPrev[3];
- }
- else if (EVT.count < EVENTQSIZE) {
- /* Add a new joystick movement event */
- EVT.oldJoyMove = EVT.freeHead;
- memset(&evt,0,sizeof(evt));
- evt.what = EVT_JOYMOVE;
- evt.message = EVT.joyButState;
- evt.where_x = EVT.joyPrev[0];
- evt.where_y = EVT.joyPrev[1];
- evt.relative_x = EVT.joyPrev[2];
- evt.relative_y = EVT.joyPrev[3];
- addEvent(&evt);
- }
- _EVT_restoreInt(ps);
- }
-
- /* Read the joystick buttons, and post events to reflect the change
- * in state for the joystick buttons.
- */
- if (newButState != EVT.joyButState) {
- if (EVT.count < EVENTQSIZE) {
- /* Add a new joystick click event */
- ps = _EVT_disableInt();
- memset(&evt,0,sizeof(evt));
- evt.what = EVT_JOYCLICK;
- evt.message = newButState;
- EVT.evtq[EVT.oldJoyMove].where_x = EVT.joyPrev[0];
- EVT.evtq[EVT.oldJoyMove].where_y = EVT.joyPrev[1];
- EVT.evtq[EVT.oldJoyMove].relative_x = EVT.joyPrev[2];
- EVT.evtq[EVT.oldJoyMove].relative_y = EVT.joyPrev[3];
- addEvent(&evt);
- _EVT_restoreInt(ps);
- }
- EVT.joyButState = newButState;
- }
- }
+ /* Read joystick axes and post movement events if they have
+ * changed since the last time we polled. Until the events are
+ * actually flushed, we keep modifying the same joystick movement
+ * event, so you won't get multiple movement event
+ */
+ mask = _EVT_readJoyAxis(EVT.joyMask,axis);
+ newButState = _EVT_readJoyButtons();
+ moved = false;
+ for (i = 0; i < JOY_NUM_AXES; i++) {
+ if (mask & (EVT_JOY_AXIS_X1 << i))
+ axis[i] = scaleJoyAxis(axis[i],i);
+ else
+ axis[i] = EVT.joyPrev[i];
+ if (axis[i] != EVT.joyPrev[i])
+ moved = true;
+ }
+ if (moved) {
+ memcpy(EVT.joyPrev,axis,sizeof(EVT.joyPrev));
+ ps = _EVT_disableInt();
+ if (EVT.oldJoyMove != -1) {
+ /* Modify the existing joystick movement event */
+ EVT.evtq[EVT.oldJoyMove].message = newButState;
+ EVT.evtq[EVT.oldJoyMove].where_x = EVT.joyPrev[0];
+ EVT.evtq[EVT.oldJoyMove].where_y = EVT.joyPrev[1];
+ EVT.evtq[EVT.oldJoyMove].relative_x = EVT.joyPrev[2];
+ EVT.evtq[EVT.oldJoyMove].relative_y = EVT.joyPrev[3];
+ }
+ else if (EVT.count < EVENTQSIZE) {
+ /* Add a new joystick movement event */
+ EVT.oldJoyMove = EVT.freeHead;
+ memset(&evt,0,sizeof(evt));
+ evt.what = EVT_JOYMOVE;
+ evt.message = EVT.joyButState;
+ evt.where_x = EVT.joyPrev[0];
+ evt.where_y = EVT.joyPrev[1];
+ evt.relative_x = EVT.joyPrev[2];
+ evt.relative_y = EVT.joyPrev[3];
+ addEvent(&evt);
+ }
+ _EVT_restoreInt(ps);
+ }
+
+ /* Read the joystick buttons, and post events to reflect the change
+ * in state for the joystick buttons.
+ */
+ if (newButState != EVT.joyButState) {
+ if (EVT.count < EVENTQSIZE) {
+ /* Add a new joystick click event */
+ ps = _EVT_disableInt();
+ memset(&evt,0,sizeof(evt));
+ evt.what = EVT_JOYCLICK;
+ evt.message = newButState;
+ EVT.evtq[EVT.oldJoyMove].where_x = EVT.joyPrev[0];
+ EVT.evtq[EVT.oldJoyMove].where_y = EVT.joyPrev[1];
+ EVT.evtq[EVT.oldJoyMove].relative_x = EVT.joyPrev[2];
+ EVT.evtq[EVT.oldJoyMove].relative_y = EVT.joyPrev[3];
+ addEvent(&evt);
+ _EVT_restoreInt(ps);
+ }
+ EVT.joyButState = newButState;
+ }
+ }
}
/****************************************************************************
uint ps;
if (EVT.count < EVENTQSIZE) {
- /* Save information in event record */
- ps = _EVT_disableInt();
- evt.which = which;
- evt.when = _EVT_getTicks();
- evt.what = what;
- evt.message = message;
- evt.modifiers = modifiers;
- addEvent(&evt); /* Add to EVT.tail of event queue */
- _EVT_restoreInt(ps);
- return true;
- }
+ /* Save information in event record */
+ ps = _EVT_disableInt();
+ evt.which = which;
+ evt.when = _EVT_getTicks();
+ evt.what = what;
+ evt.message = message;
+ evt.modifiers = modifiers;
+ addEvent(&evt); /* Add to EVT.tail of event queue */
+ _EVT_restoreInt(ps);
+ return true;
+ }
else
- return false;
+ return false;
}
/****************************************************************************
event_t evt;
do { /* Flush all events */
- EVT_getNext(&evt,mask);
- } while (evt.what != EVT_NULLEVT);
+ EVT_getNext(&evt,mask);
+ } while (evt.what != EVT_NULLEVT);
}
/****************************************************************************
ulong mask)
{
do { /* Wait for an event */
- if (mask & (EVT_JOYEVT))
- EVT_pollJoystick();
- EVT_getNext(evt,EVT_EVERYEVT);
- } while (!(evt->what & mask));
+ if (mask & (EVT_JOYEVT))
+ EVT_pollJoystick();
+ EVT_getNext(evt,EVT_EVERYEVT);
+ } while (!(evt->what & mask));
}
/****************************************************************************
uint ps;
if (EVT.heartBeat)
- EVT.heartBeat(EVT.heartBeatParams);
+ EVT.heartBeat(EVT.heartBeatParams);
_EVT_pumpMessages(); /* Pump all messages into queue */
EVT.mouseMove(EVT.mx,EVT.my); /* Move the mouse cursor */
evt->what = EVT_NULLEVT; /* Default to null event */
if (EVT.count) {
- /* It is possible that an event be posted while we are trying
- * to access the event queue. This would create problems since
- * we may end up with invalid data for our event queue pointers. To
- * alleviate this, all interrupts are suspended while we manipulate
- * our pointers.
- */
- ps = _EVT_disableInt(); /* disable interrupts */
- for (evtID = EVT.head; evtID != -1; evtID = EVT.evtq[evtID].next) {
- if (EVT.evtq[evtID].what & mask)
- break; /* Found an event */
- }
- if (evtID == -1) {
- _EVT_restoreInt(ps);
- return false; /* Event was not found */
- }
- *evt = EVT.evtq[evtID]; /* Return the event */
- _EVT_restoreInt(ps);
- if (evt->what & EVT_KEYEVT)
- _EVT_maskKeyCode(evt);
- }
+ /* It is possible that an event be posted while we are trying
+ * to access the event queue. This would create problems since
+ * we may end up with invalid data for our event queue pointers. To
+ * alleviate this, all interrupts are suspended while we manipulate
+ * our pointers.
+ */
+ ps = _EVT_disableInt(); /* disable interrupts */
+ for (evtID = EVT.head; evtID != -1; evtID = EVT.evtq[evtID].next) {
+ if (EVT.evtq[evtID].what & mask)
+ break; /* Found an event */
+ }
+ if (evtID == -1) {
+ _EVT_restoreInt(ps);
+ return false; /* Event was not found */
+ }
+ *evt = EVT.evtq[evtID]; /* Return the event */
+ _EVT_restoreInt(ps);
+ if (evt->what & EVT_KEYEVT)
+ _EVT_maskKeyCode(evt);
+ }
return evt->what != EVT_NULLEVT;
}
of the event will be set to NULLEVT, and the return value will return false.
Note: You should /always/ use the EVT_EVERYEVT mask for extracting events
- from your main event loop handler. Using a mask for only a specific
- type of event for long periods of time will cause the event queue to
- fill up with events of the type you are ignoring, eventually causing
- the application to hang when the event queue becomes full.
+ from your main event loop handler. Using a mask for only a specific
+ type of event for long periods of time will cause the event queue to
+ fill up with events of the type you are ignoring, eventually causing
+ the application to hang when the event queue becomes full.
SEE ALSO:
EVT_flush, EVT_halt, EVT_peekNext
uint ps;
if (EVT.heartBeat)
- EVT.heartBeat(EVT.heartBeatParams);
+ EVT.heartBeat(EVT.heartBeatParams);
_EVT_pumpMessages(); /* Pump all messages into queue */
EVT.mouseMove(EVT.mx,EVT.my); /* Move the mouse cursor */
evt->what = EVT_NULLEVT; /* Default to null event */
if (EVT.count) {
- /* It is possible that an event be posted while we are trying
- * to access the event queue. This would create problems since
- * we may end up with invalid data for our event queue pointers. To
- * alleviate this, all interrupts are suspended while we manipulate
- * our pointers.
- */
- ps = _EVT_disableInt(); /* disable interrupts */
- for (evtID = EVT.head; evtID != -1; evtID = EVT.evtq[evtID].next) {
- if (EVT.evtq[evtID].what & mask)
- break; /* Found an event */
- }
- if (evtID == -1) {
- _EVT_restoreInt(ps);
- return false; /* Event was not found */
- }
- next = EVT.evtq[evtID].next;
- prev = EVT.evtq[evtID].prev;
- if (prev != -1)
- EVT.evtq[prev].next = next;
- else
- EVT.head = next;
- if (next != -1)
- EVT.evtq[next].prev = prev;
- else
- EVT.tail = prev;
- *evt = EVT.evtq[evtID]; /* Return the event */
- EVT.evtq[evtID].next = EVT.freeHead; /* and return to free list */
- EVT.freeHead = evtID;
- EVT.count--;
- if (evt->what == EVT_MOUSEMOVE)
- EVT.oldMove = -1;
- if (evt->what == EVT_KEYREPEAT)
- EVT.oldKey = -1;
- if (evt->what == EVT_JOYMOVE)
- EVT.oldJoyMove = -1;
- _EVT_restoreInt(ps); /* enable interrupts */
- if (evt->what & EVT_KEYEVT)
- _EVT_maskKeyCode(evt);
- }
+ /* It is possible that an event be posted while we are trying
+ * to access the event queue. This would create problems since
+ * we may end up with invalid data for our event queue pointers. To
+ * alleviate this, all interrupts are suspended while we manipulate
+ * our pointers.
+ */
+ ps = _EVT_disableInt(); /* disable interrupts */
+ for (evtID = EVT.head; evtID != -1; evtID = EVT.evtq[evtID].next) {
+ if (EVT.evtq[evtID].what & mask)
+ break; /* Found an event */
+ }
+ if (evtID == -1) {
+ _EVT_restoreInt(ps);
+ return false; /* Event was not found */
+ }
+ next = EVT.evtq[evtID].next;
+ prev = EVT.evtq[evtID].prev;
+ if (prev != -1)
+ EVT.evtq[prev].next = next;
+ else
+ EVT.head = next;
+ if (next != -1)
+ EVT.evtq[next].prev = prev;
+ else
+ EVT.tail = prev;
+ *evt = EVT.evtq[evtID]; /* Return the event */
+ EVT.evtq[evtID].next = EVT.freeHead; /* and return to free list */
+ EVT.freeHead = evtID;
+ EVT.count--;
+ if (evt->what == EVT_MOUSEMOVE)
+ EVT.oldMove = -1;
+ if (evt->what == EVT_KEYREPEAT)
+ EVT.oldKey = -1;
+ if (evt->what == EVT_JOYMOVE)
+ EVT.oldJoyMove = -1;
+ _EVT_restoreInt(ps); /* enable interrupts */
+ if (evt->what & EVT_KEYEVT)
+ _EVT_maskKeyCode(evt);
+ }
/* If there is no event pending, check if we should generate an auto
* mouse down event if the mouse is still currently down.
*/
if (evt->what == EVT_NULLEVT && EVT.autoRepeat && (mask & EVT_MOUSEAUTO) && (EVT.downMouse.what & EVT_MOUSEDOWN)) {
- ulong ticks = _EVT_getTicks();
- if ((ticks - EVT.autoTicks) >= (EVT.autoRepeat + (EVT.firstAuto ? EVT.autoDelay : 0))) {
- evt->what = EVT_MOUSEAUTO;
- evt->message = EVT.downMouse.message;
- evt->modifiers = EVT.downMouse.modifiers;
- evt->where_x = EVT.autoMouse_x;
- evt->where_y = EVT.autoMouse_y;
- evt->relative_x = 0;
- evt->relative_y = 0;
- EVT.autoTicks = evt->when = ticks;
- EVT.firstAuto = false;
- }
- }
+ ulong ticks = _EVT_getTicks();
+ if ((ticks - EVT.autoTicks) >= (EVT.autoRepeat + (EVT.firstAuto ? EVT.autoDelay : 0))) {
+ evt->what = EVT_MOUSEAUTO;
+ evt->message = EVT.downMouse.message;
+ evt->modifiers = EVT.downMouse.modifiers;
+ evt->where_x = EVT.autoMouse_x;
+ evt->where_y = EVT.autoMouse_y;
+ evt->relative_x = 0;
+ evt->relative_y = 0;
+ EVT.autoTicks = evt->when = ticks;
+ EVT.firstAuto = false;
+ }
+ }
return evt->what != EVT_NULLEVT;
}
recieved.
Note: Your event callback may be called in response to a hardware
- interrupt and will be executing in the context of the hardware
- interrupt handler under MSDOS (ie: keyboard interrupt or mouse
- interrupt). For this reason the code pages for the callback that
- you register must be locked in memory with the PM_lockCodePages
- function. You must also lock down any data pages that your function
- needs to reference as well.
+ interrupt and will be executing in the context of the hardware
+ interrupt handler under MSDOS (ie: keyboard interrupt or mouse
+ interrupt). For this reason the code pages for the callback that
+ you register must be locked in memory with the PM_lockCodePages
+ function. You must also lock down any data pages that your function
+ needs to reference as well.
Note: You can also use this filter callback to process events at the
- time they are activated by the user (ie: when the user hits the
- key or moves the mouse), but make sure your code runs as fast as
- possible as it will be executing inside the context of an interrupt
- handler on some systems.
+ time they are activated by the user (ie: when the user hits the
+ key or moves the mouse), but make sure your code runs as fast as
+ possible as it will be executing inside the context of an interrupt
+ handler on some systems.
SEE ALSO:
EVT_getNext, EVT_peekNext
code = EVT_scanCode(EVT.myEvent.message);
NOTE: Scan codes in the event library are not really hardware scan codes,
- but rather virtual scan codes as generated by a low level keyboard
- interface driver. All virtual scan code values are defined by the
- EVT_scanCodesType enumeration, and will be identical across all
- supports OS'es and platforms.
+ but rather virtual scan codes as generated by a low level keyboard
+ interface driver. All virtual scan code values are defined by the
+ EVT_scanCodesType enumeration, and will be identical across all
+ supports OS'es and platforms.
SEE ALSO:
EVT_asciiCode, EVT_repeatCount
projects / people / ms / u-boot.git / blobdiff