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/*
* Copyright © 2011 Collabra Ltd.
* Copyright © 2011 Red Hat, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Author: Daniel Stone <daniel@fooishbar.org>
*/
#include <dix-config.h>
#include "dix/dix_priv.h"
#include "dix/dixgrabs_priv.h"
#include "dix/eventconvert.h"
#include "dix/exevents_priv.h"
#include "dix/input_priv.h"
#include "mi/mi_priv.h"
#include "os/bug_priv.h"
#include "inputstr.h"
#include "scrnintstr.h"
#include "eventstr.h"
#include "exglobals.h"
#include "inpututils.h"
#include "windowstr.h"
#define TOUCH_HISTORY_SIZE 100
Bool touchEmulatePointer = TRUE;
/**
* Some documentation about touch points:
* The driver submits touch events with its own (unique) touch point ID.
* The driver may re-use those IDs, the DDX doesn't care. It just passes on
* the data to the DIX. In the server, the driver's ID is referred to as the
* DDX id anyway.
*
* On a TouchBegin, we create a DDXTouchPointInfo that contains the DDX id
* and the client ID that this touchpoint will have. The client ID is the
* one visible on the protocol.
*
* TouchUpdate and TouchEnd will only be processed if there is an active
* touchpoint with the same DDX id.
*
* The DDXTouchPointInfo struct is stored dev->last.touches. When the event
* being processed, it becomes a TouchPointInfo in dev->touch-touches which
* contains amongst other things the sprite trace and delivery information.
*/
/**
* Check which devices need a bigger touch event queue and grow their
* last.touches by half its current size.
*
* @param client Always the serverClient
* @param closure Always NULL
*
* @return Always True. If we fail to grow we probably will topple over soon
* anyway and re-executing this won't help.
*/
static Bool
TouchResizeQueue(DeviceIntPtr dev)
{
DDXTouchPointInfoPtr tmp;
size_t size;
/* Grow sufficiently so we don't need to do it often */
size = dev->last.num_touches + dev->last.num_touches / 2 + 1;
tmp = reallocarray(dev->last.touches, size, sizeof(*dev->last.touches));
if (tmp) {
int j;
dev->last.touches = tmp;
for (j = dev->last.num_touches; j < size; j++)
TouchInitDDXTouchPoint(dev, &dev->last.touches[j]);
dev->last.num_touches = size;
return TRUE;
}
return FALSE;
}
/**
* Given the DDX-facing ID (which is _not_ DeviceEvent::detail.touch), find the
* associated DDXTouchPointInfoRec.
*
* @param dev The device to create the touch point for
* @param ddx_id Touch id assigned by the driver/ddx
* @param create Create the touchpoint if it cannot be found
*/
DDXTouchPointInfoPtr
TouchFindByDDXID(DeviceIntPtr dev, uint32_t ddx_id, Bool create)
{
DDXTouchPointInfoPtr ti;
int i;
if (!dev->touch)
return NULL;
for (i = 0; i < dev->last.num_touches; i++) {
ti = &dev->last.touches[i];
if (ti->active && ti->ddx_id == ddx_id)
return ti;
}
return create ? TouchBeginDDXTouch(dev, ddx_id) : NULL;
}
/**
* Given a unique DDX ID for a touchpoint, create a touchpoint record and
* return it.
*
* If no other touch points are active, mark new touchpoint for pointer
* emulation.
*
* Returns NULL on failure (i.e. if another touch with that ID is already active,
* allocation failure).
*/
DDXTouchPointInfoPtr
TouchBeginDDXTouch(DeviceIntPtr dev, uint32_t ddx_id)
{
static int next_client_id = 1;
int i;
TouchClassPtr t = dev->touch;
DDXTouchPointInfoPtr ti = NULL;
Bool emulate_pointer;
if (!t)
return NULL;
emulate_pointer = touchEmulatePointer && (t->mode == XIDirectTouch);
/* Look for another active touchpoint with the same DDX ID. DDX
* touchpoints must be unique. */
if (TouchFindByDDXID(dev, ddx_id, FALSE))
return NULL;
for (;;) {
for (i = 0; i < dev->last.num_touches; i++) {
/* Only emulate pointer events on the first touch */
if (dev->last.touches[i].active)
emulate_pointer = FALSE;
else if (!ti) /* ti is now first non-active touch rec */
ti = &dev->last.touches[i];
if (!emulate_pointer && ti)
break;
}
if (ti)
break;
if (!TouchResizeQueue(dev))
break;
}
if (ti) {
int client_id;
ti->active = TRUE;
ti->ddx_id = ddx_id;
client_id = next_client_id;
next_client_id++;
if (next_client_id == 0)
next_client_id = 1;
ti->client_id = client_id;
ti->emulate_pointer = emulate_pointer;
}
return ti;
}
void
TouchEndDDXTouch(DeviceIntPtr dev, DDXTouchPointInfoPtr ti)
{
TouchClassPtr t = dev->touch;
if (!t)
return;
ti->active = FALSE;
}
void
TouchInitDDXTouchPoint(DeviceIntPtr dev, DDXTouchPointInfoPtr ddxtouch)
{
memset(ddxtouch, 0, sizeof(*ddxtouch));
ddxtouch->valuators = valuator_mask_new(dev->valuator->numAxes);
}
Bool
TouchInitTouchPoint(TouchClassPtr t, ValuatorClassPtr v, int index)
{
TouchPointInfoPtr ti;
if (index >= t->num_touches)
return FALSE;
ti = &t->touches[index];
memset(ti, 0, sizeof(*ti));
ti->valuators = valuator_mask_new(v->numAxes);
if (!ti->valuators)
return FALSE;
ti->sprite.spriteTrace = calloc(32, sizeof(*ti->sprite.spriteTrace));
if (!ti->sprite.spriteTrace) {
valuator_mask_free(&ti->valuators);
return FALSE;
}
ti->sprite.spriteTraceSize = 32;
ti->sprite.spriteTrace[0] = screenInfo.screens[0]->root;
ti->sprite.hot.pScreen = screenInfo.screens[0];
ti->sprite.hotPhys.pScreen = screenInfo.screens[0];
ti->client_id = -1;
return TRUE;
}
void
TouchFreeTouchPoint(DeviceIntPtr device, int index)
{
TouchPointInfoPtr ti;
int i;
if (!device->touch || index >= device->touch->num_touches)
return;
ti = &device->touch->touches[index];
if (ti->active)
TouchEndTouch(device, ti);
for (i = 0; i < ti->num_listeners; i++)
TouchRemoveListener(ti, ti->listeners[0].listener);
valuator_mask_free(&ti->valuators);
free(ti->sprite.spriteTrace);
ti->sprite.spriteTrace = NULL;
free(ti->listeners);
ti->listeners = NULL;
free(ti->history);
ti->history = NULL;
ti->history_size = 0;
ti->history_elements = 0;
}
/**
* Given a client-facing ID (e.g. DeviceEvent::detail.touch), find the
* associated TouchPointInfoRec.
*/
TouchPointInfoPtr
TouchFindByClientID(DeviceIntPtr dev, uint32_t client_id)
{
TouchClassPtr t = dev->touch;
TouchPointInfoPtr ti;
int i;
if (!t)
return NULL;
for (i = 0; i < t->num_touches; i++) {
ti = &t->touches[i];
if (ti->active && ti->client_id == client_id)
return ti;
}
return NULL;
}
/**
* Given a unique ID for a touchpoint, create a touchpoint record in the
* server.
*
* Returns NULL on failure (i.e. if another touch with that ID is already active,
* allocation failure).
*/
TouchPointInfoPtr
TouchBeginTouch(DeviceIntPtr dev, int sourceid, uint32_t touchid,
Bool emulate_pointer)
{
int i;
TouchClassPtr t = dev->touch;
TouchPointInfoPtr ti;
void *tmp;
if (!t)
return NULL;
/* Look for another active touchpoint with the same client ID. It's
* technically legitimate for a touchpoint to still exist with the same
* ID but only once the 32 bits wrap over and you've used up 4 billion
* touch ids without lifting that one finger off once. In which case
* you deserve a medal or something, but not error handling code. */
if (TouchFindByClientID(dev, touchid))
return NULL;
try_find_touch:
for (i = 0; i < t->num_touches; i++) {
ti = &t->touches[i];
if (!ti->active) {
ti->active = TRUE;
ti->client_id = touchid;
ti->sourceid = sourceid;
ti->emulate_pointer = emulate_pointer;
return ti;
}
}
/* If we get here, then we've run out of touches: enlarge dev->touch and
* try again. */
tmp = reallocarray(t->touches, t->num_touches + 1, sizeof(*ti));
if (tmp) {
t->touches = tmp;
t->num_touches++;
if (TouchInitTouchPoint(t, dev->valuator, t->num_touches - 1))
goto try_find_touch;
}
return NULL;
}
/**
* Releases a touchpoint for use: this must only be called after all events
* related to that touchpoint have been sent and finalised. Called from
* ProcessTouchEvent and friends. Not by you.
*/
void
TouchEndTouch(DeviceIntPtr dev, TouchPointInfoPtr ti)
{
int i;
if (ti->emulate_pointer) {
GrabPtr grab;
if ((grab = dev->deviceGrab.grab)) {
if (dev->deviceGrab.fromPassiveGrab &&
!dev->button->buttonsDown &&
!dev->touch->buttonsDown && GrabIsPointerGrab(grab))
(*dev->deviceGrab.DeactivateGrab) (dev);
}
}
for (i = 0; i < ti->num_listeners; i++)
TouchRemoveListener(ti, ti->listeners[0].listener);
ti->active = FALSE;
ti->pending_finish = FALSE;
ti->sprite.spriteTraceGood = 0;
free(ti->listeners);
ti->listeners = NULL;
ti->num_listeners = 0;
ti->num_grabs = 0;
ti->client_id = 0;
TouchEventHistoryFree(ti);
valuator_mask_zero(ti->valuators);
}
/**
* Allocate the event history for this touch pointer. Calling this on a
* touchpoint that already has an event history does nothing but counts as
* as success.
*
* @return TRUE on success, FALSE on allocation errors
*/
Bool
TouchEventHistoryAllocate(TouchPointInfoPtr ti)
{
if (ti->history)
return TRUE;
ti->history = calloc(TOUCH_HISTORY_SIZE, sizeof(*ti->history));
ti->history_elements = 0;
if (ti->history)
ti->history_size = TOUCH_HISTORY_SIZE;
return ti->history != NULL;
}
void
TouchEventHistoryFree(TouchPointInfoPtr ti)
{
free(ti->history);
ti->history = NULL;
ti->history_size = 0;
ti->history_elements = 0;
}
/**
* Store the given event on the event history (if one exists)
* A touch event history consists of one TouchBegin and several TouchUpdate
* events (if applicable) but no TouchEnd event.
* If more than one TouchBegin is pushed onto the stack, the push is
* ignored, calling this function multiple times for the TouchBegin is
* valid.
*/
void
TouchEventHistoryPush(TouchPointInfoPtr ti, const DeviceEvent *ev)
{
if (!ti->history)
return;
switch (ev->type) {
case ET_TouchBegin:
/* don't store the same touchbegin twice */
if (ti->history_elements > 0)
return;
break;
case ET_TouchUpdate:
break;
case ET_TouchEnd:
return; /* no TouchEnd events in the history */
default:
return;
}
/* We only store real events in the history */
if (ev->flags & (TOUCH_CLIENT_ID | TOUCH_REPLAYING))
return;
ti->history[ti->history_elements++] = *ev;
/* FIXME: proper overflow fixes */
if (ti->history_elements > ti->history_size - 1) {
ti->history_elements = ti->history_size - 1;
DebugF("source device %d: history size %zu overflowing for touch %u\n",
ti->sourceid, ti->history_size, ti->client_id);
}
}
void
TouchEventHistoryReplay(TouchPointInfoPtr ti, DeviceIntPtr dev, XID resource)
{
int i;
if (!ti->history)
return;
DeliverDeviceClassesChangedEvent(ti->sourceid, ti->history[0].time);
for (i = 0; i < ti->history_elements; i++) {
DeviceEvent *ev = &ti->history[i];
ev->flags |= TOUCH_REPLAYING;
ev->resource = resource;
/* FIXME:
We're replaying ti->history which contains the TouchBegin +
all TouchUpdates for ti. This needs to be passed on to the next
listener. If that is a touch listener, everything is dandy.
If the TouchBegin however triggers a sync passive grab, the
TouchUpdate events must be sent to EnqueueEvent so the events end
up in syncEvents.pending to be forwarded correctly in a
subsequent ComputeFreeze().
However, if we just send them to EnqueueEvent the sync'ing device
prevents handling of touch events for ownership listeners who
want the events right here, right now.
*/
dev->public.processInputProc((InternalEvent*)ev, dev);
}
}
Bool
TouchBuildDependentSpriteTrace(DeviceIntPtr dev, SpritePtr sprite)
{
int i;
TouchClassPtr t = dev->touch;
SpritePtr srcsprite;
/* All touches should have the same sprite trace, so find and reuse an
* existing touch's sprite if possible, else use the device's sprite. */
for (i = 0; i < t->num_touches; i++)
if (!t->touches[i].pending_finish &&
t->touches[i].sprite.spriteTraceGood > 0)
break;
if (i < t->num_touches)
srcsprite = &t->touches[i].sprite;
else if (dev->spriteInfo->sprite)
srcsprite = dev->spriteInfo->sprite;
else
return FALSE;
return CopySprite(srcsprite, sprite);
}
/**
* Ensure a window trace is present in ti->sprite, constructing one for
* TouchBegin events.
*/
Bool
TouchBuildSprite(DeviceIntPtr sourcedev, TouchPointInfoPtr ti,
InternalEvent *ev)
{
TouchClassPtr t = sourcedev->touch;
SpritePtr sprite = &ti->sprite;
if (t->mode == XIDirectTouch) {
/* Focus immediately under the touchpoint in direct touch mode.
* XXX: Do we need to handle crossing screens here? */
sprite->spriteTrace[0] =
sourcedev->spriteInfo->sprite->hotPhys.pScreen->root;
XYToWindow(sprite, ev->device_event.root_x, ev->device_event.root_y);
}
else if (!TouchBuildDependentSpriteTrace(sourcedev, sprite))
return FALSE;
if (sprite->spriteTraceGood <= 0)
return FALSE;
/* Mark which grabs/event selections we're delivering to: max one grab per
* window plus the bottom-most event selection, plus any active grab. */
ti->listeners = calloc(sprite->spriteTraceGood + 2, sizeof(*ti->listeners));
if (!ti->listeners) {
sprite->spriteTraceGood = 0;
return FALSE;
}
ti->num_listeners = 0;
return TRUE;
}
/**
* Copy the touch event into the pointer_event, switching the required
* fields to make it a correct pointer event.
*
* @param event The original touch event
* @param[in] motion_event The respective motion event
* @param[in] button_event The respective button event (if any)
*
* @returns The number of converted events.
* @retval 0 An error occurred
* @retval 1 only the motion event is valid
* @retval 2 motion and button event are valid
*/
int
TouchConvertToPointerEvent(const InternalEvent *event,
InternalEvent *motion_event,
InternalEvent *button_event)
{
int ptrtype;
int nevents = 0;
BUG_RETURN_VAL(!event, 0);
BUG_RETURN_VAL(!motion_event, 0);
switch (event->any.type) {
case ET_TouchUpdate:
nevents = 1;
break;
case ET_TouchBegin:
nevents = 2; /* motion + press */
ptrtype = ET_ButtonPress;
break;
case ET_TouchEnd:
nevents = 2; /* motion + release */
ptrtype = ET_ButtonRelease;
break;
default:
BUG_WARN_MSG(1, "Invalid event type %d\n", event->any.type);
return 0;
}
BUG_WARN_MSG(!(event->device_event.flags & TOUCH_POINTER_EMULATED),
"Non-emulating touch event\n");
motion_event->device_event = event->device_event;
motion_event->any.type = ET_Motion;
motion_event->device_event.detail.button = 0;
motion_event->device_event.flags = XIPointerEmulated;
if (nevents > 1) {
BUG_RETURN_VAL(!button_event, 0);
button_event->device_event = event->device_event;
button_event->any.type = ptrtype;
button_event->device_event.flags = XIPointerEmulated;
/* detail is already correct */
}
return nevents;
}
/**
* Return the corresponding pointer emulation internal event type for the given
* touch event or 0 if no such event type exists.
*/
int
TouchGetPointerEventType(const InternalEvent *event)
{
int type = 0;
switch (event->any.type) {
case ET_TouchBegin:
type = ET_ButtonPress;
break;
case ET_TouchUpdate:
type = ET_Motion;
break;
case ET_TouchEnd:
type = ET_ButtonRelease;
break;
default:
break;
}
return type;
}
/**
* @returns TRUE if the specified grab or selection is the current owner of
* the touch sequence.
*/
Bool
TouchResourceIsOwner(TouchPointInfoPtr ti, XID resource)
{
return (ti->listeners[0].listener == resource);
}
/**
* Add the resource to this touch's listeners.
*/
void
TouchAddListener(TouchPointInfoPtr ti, XID resource, int resource_type,
enum InputLevel level, enum TouchListenerType type,
enum TouchListenerState state, WindowPtr window,
const GrabPtr grab)
{
GrabPtr g = NULL;
/* We need a copy of the grab, not the grab itself since that may be
* deleted by a UngrabButton request and leaves us with a dangling
* pointer */
if (grab)
g = AllocGrab(grab);
ti->listeners[ti->num_listeners].listener = resource;
ti->listeners[ti->num_listeners].resource_type = resource_type;
ti->listeners[ti->num_listeners].level = level;
ti->listeners[ti->num_listeners].state = state;
ti->listeners[ti->num_listeners].type = type;
ti->listeners[ti->num_listeners].window = window;
ti->listeners[ti->num_listeners].grab = g;
if (grab)
ti->num_grabs++;
ti->num_listeners++;
}
/**
* Remove the resource from this touch's listeners.
*
* @return TRUE if the resource was removed, FALSE if the resource was not
* in the list
*/
Bool
TouchRemoveListener(TouchPointInfoPtr ti, XID resource)
{
int i;
for (i = 0; i < ti->num_listeners; i++) {
int j;
TouchListener *listener = &ti->listeners[i];
if (listener->listener != resource)
continue;
if (listener->grab) {
FreeGrab(listener->grab);
listener->grab = NULL;
ti->num_grabs--;
}
for (j = i; j < ti->num_listeners - 1; j++)
ti->listeners[j] = ti->listeners[j + 1];
ti->num_listeners--;
ti->listeners[ti->num_listeners].listener = 0;
ti->listeners[ti->num_listeners].state = TOUCH_LISTENER_AWAITING_BEGIN;
return TRUE;
}
return FALSE;
}
static void
TouchAddGrabListener(DeviceIntPtr dev, TouchPointInfoPtr ti,
InternalEvent *ev, GrabPtr grab)
{
enum TouchListenerType type = TOUCH_LISTENER_GRAB;
/* FIXME: owner_events */
if (grab->grabtype == XI2) {
if (!xi2mask_isset(grab->xi2mask, dev, XI_TouchOwnership))
TouchEventHistoryAllocate(ti);
if (!xi2mask_isset(grab->xi2mask, dev, XI_TouchBegin))
type = TOUCH_LISTENER_POINTER_GRAB;
}
else if (grab->grabtype == XI || grab->grabtype == CORE) {
TouchEventHistoryAllocate(ti);
type = TOUCH_LISTENER_POINTER_GRAB;
}
/* grab listeners are always X11_RESTYPE_NONE since we keep the grab pointer */
TouchAddListener(ti, grab->resource, X11_RESTYPE_NONE, grab->grabtype,
type, TOUCH_LISTENER_AWAITING_BEGIN, grab->window, grab);
}
/**
* Add one listener if there is a grab on the given window.
*/
static void
TouchAddPassiveGrabListener(DeviceIntPtr dev, TouchPointInfoPtr ti,
WindowPtr win, InternalEvent *ev)
{
GrabPtr grab;
Bool check_core = InputDevIsMaster(dev) && ti->emulate_pointer;
/* FIXME: make CheckPassiveGrabsOnWindow only trigger on TouchBegin */
grab = CheckPassiveGrabsOnWindow(win, dev, ev, check_core, FALSE);
if (!grab)
return;
TouchAddGrabListener(dev, ti, ev, grab);
}
static Bool
TouchAddRegularListener(DeviceIntPtr dev, TouchPointInfoPtr ti,
WindowPtr win, InternalEvent *ev)
{
InputClients *iclients = NULL;
OtherInputMasks *inputMasks = NULL;
uint16_t evtype = 0; /* may be event type or emulated event type */
enum TouchListenerType type = TOUCH_LISTENER_REGULAR;
int mask;
evtype = GetXI2Type(ev->any.type);
mask = EventIsDeliverable(dev, ev->any.type, win);
if (!mask && !ti->emulate_pointer)
return FALSE;
else if (!mask) { /* now try for pointer event */
mask = EventIsDeliverable(dev, TouchGetPointerEventType(ev), win);
if (mask) {
evtype = GetXI2Type(TouchGetPointerEventType(ev));
type = TOUCH_LISTENER_POINTER_REGULAR;
}
}
if (!mask)
return FALSE;
inputMasks = wOtherInputMasks(win);
if ((mask & EVENT_XI2_MASK) && (inputMasks != NULL)) {
nt_list_for_each_entry(iclients, inputMasks->inputClients, next) {
if (!xi2mask_isset(iclients->xi2mask, dev, evtype))
continue;
if (!xi2mask_isset(iclients->xi2mask, dev, XI_TouchOwnership))
TouchEventHistoryAllocate(ti);
TouchAddListener(ti, iclients->resource, RT_INPUTCLIENT, XI2,
type, TOUCH_LISTENER_AWAITING_BEGIN, win, NULL);
return TRUE;
}
}
if ((mask & EVENT_XI1_MASK) && (inputMasks != NULL)) {
int xitype = GetXIType(TouchGetPointerEventType(ev));
Mask xi_filter = event_get_filter_from_type(dev, xitype);
nt_list_for_each_entry(iclients, inputMasks->inputClients, next) {
if (!(iclients->mask[dev->id] & xi_filter))
continue;
TouchEventHistoryAllocate(ti);
TouchAddListener(ti, iclients->resource, RT_INPUTCLIENT, XI,
TOUCH_LISTENER_POINTER_REGULAR,
TOUCH_LISTENER_AWAITING_BEGIN,
win, NULL);
return TRUE;
}
}
if (mask & EVENT_CORE_MASK) {
int coretype = GetCoreType(TouchGetPointerEventType(ev));
Mask core_filter = event_get_filter_from_type(dev, coretype);
OtherClients *oclients;
/* window owner */
if (InputDevIsMaster(dev) && (win->eventMask & core_filter)) {
TouchEventHistoryAllocate(ti);
TouchAddListener(ti, win->drawable.id, X11_RESTYPE_WINDOW, CORE,
TOUCH_LISTENER_POINTER_REGULAR,
TOUCH_LISTENER_AWAITING_BEGIN,
win, NULL);
return TRUE;
}
/* all others */
nt_list_for_each_entry(oclients, wOtherClients(win), next) {
if (!(oclients->mask & core_filter))
continue;
TouchEventHistoryAllocate(ti);
TouchAddListener(ti, oclients->resource, X11_RESTYPE_OTHERCLIENT, CORE,
type, TOUCH_LISTENER_AWAITING_BEGIN, win, NULL);
return TRUE;
}
}
return FALSE;
}
static void
TouchAddActiveGrabListener(DeviceIntPtr dev, TouchPointInfoPtr ti,
InternalEvent *ev, GrabPtr grab)
{
if (!ti->emulate_pointer &&
(grab->grabtype == CORE || grab->grabtype == XI))
return;
if (!ti->emulate_pointer &&
grab->grabtype == XI2 &&
!xi2mask_isset(grab->xi2mask, dev, XI_TouchBegin))
return;
TouchAddGrabListener(dev, ti, ev, grab);
}
void
TouchSetupListeners(DeviceIntPtr dev, TouchPointInfoPtr ti, InternalEvent *ev)
{
int i;
SpritePtr sprite = &ti->sprite;
WindowPtr win;
if (dev->deviceGrab.grab && !dev->deviceGrab.fromPassiveGrab)
TouchAddActiveGrabListener(dev, ti, ev, dev->deviceGrab.grab);
/* We set up an active touch listener for existing touches, but not any
* passive grab or regular listeners. */
if (ev->any.type != ET_TouchBegin)
return;
/* First, find all grabbing clients from the root window down
* to the deepest child window. */
for (i = 0; i < sprite->spriteTraceGood; i++) {
win = sprite->spriteTrace[i];
TouchAddPassiveGrabListener(dev, ti, win, ev);
}
/* Find the first client with an applicable event selection,
* going from deepest child window back up to the root window. */
for (i = sprite->spriteTraceGood - 1; i >= 0; i--) {
Bool delivered;
win = sprite->spriteTrace[i];
delivered = TouchAddRegularListener(dev, ti, win, ev);
if (delivered)
return;
}
}
/**
* Remove the touch pointer grab from the device. Called from
* DeactivatePointerGrab()
*/
void
TouchRemovePointerGrab(DeviceIntPtr dev)
{
TouchPointInfoPtr ti;
GrabPtr grab;
InternalEvent *ev;
if (!dev->touch)
return;
grab = dev->deviceGrab.grab;
if (!grab)
return;
ev = dev->deviceGrab.sync.event;
if (!IsTouchEvent(ev))
return;
ti = TouchFindByClientID(dev, ev->device_event.touchid);
if (!ti)
return;
/* FIXME: missing a bit of code here... */
}
/* As touch grabs don't turn into active grabs with their own resources, we
* need to walk all the touches and remove this grab from any delivery
* lists. */
void
TouchListenerGone(XID resource)
{
TouchPointInfoPtr ti;
DeviceIntPtr dev;
InternalEvent *events = InitEventList(GetMaximumEventsNum());
int i, j, k, nev;
if (!events)
FatalError("TouchListenerGone: couldn't allocate events\n");
for (dev = inputInfo.devices; dev; dev = dev->next) {
if (!dev->touch)
continue;
for (i = 0; i < dev->touch->num_touches; i++) {
ti = &dev->touch->touches[i];
if (!ti->active)
continue;
for (j = 0; j < ti->num_listeners; j++) {
if (CLIENT_BITS(ti->listeners[j].listener) != resource)
continue;
nev = GetTouchOwnershipEvents(events, dev, ti, XIRejectTouch,
ti->listeners[j].listener, 0);
for (k = 0; k < nev; k++)
mieqProcessDeviceEvent(dev, events + k, NULL);
break;
}
}
}
FreeEventList(events, GetMaximumEventsNum());
}
int
TouchListenerAcceptReject(DeviceIntPtr dev, TouchPointInfoPtr ti, int listener,
int mode)
{
InternalEvent *events;
int nev;
int i;
BUG_RETURN_VAL(listener < 0, BadMatch);
BUG_RETURN_VAL(listener >= ti->num_listeners, BadMatch);
if (listener > 0) {
if (mode == XIRejectTouch)
TouchRejected(dev, ti, ti->listeners[listener].listener, NULL);
else
ti->listeners[listener].state = TOUCH_LISTENER_EARLY_ACCEPT;
return Success;
}
events = InitEventList(GetMaximumEventsNum());
BUG_RETURN_VAL_MSG(!events, BadAlloc, "Failed to allocate touch ownership events\n");
nev = GetTouchOwnershipEvents(events, dev, ti, mode,
ti->listeners[0].listener, 0);
BUG_WARN_MSG(nev == 0, "Failed to get touch ownership events\n");
for (i = 0; i < nev; i++)
mieqProcessDeviceEvent(dev, events + i, NULL);
FreeEventList(events, GetMaximumEventsNum());
return nev ? Success : BadMatch;
}
int
TouchAcceptReject(ClientPtr client, DeviceIntPtr dev, int mode,
uint32_t touchid, Window grab_window, XID *error)
{
TouchPointInfoPtr ti;
int i;
if (!dev->touch) {
*error = dev->id;
return BadDevice;
}
ti = TouchFindByClientID(dev, touchid);
if (!ti) {
*error = touchid;
return BadValue;
}
for (i = 0; i < ti->num_listeners; i++) {
if (CLIENT_ID(ti->listeners[i].listener) == client->index &&
ti->listeners[i].window->drawable.id == grab_window)
break;
}
if (i == ti->num_listeners)
return BadAccess;
return TouchListenerAcceptReject(dev, ti, i, mode);
}
/**
* End physically active touches for a device.
*/
void
TouchEndPhysicallyActiveTouches(DeviceIntPtr dev)
{
InternalEvent *eventlist = InitEventList(GetMaximumEventsNum());
int i;
input_lock();
mieqProcessInputEvents();
for (i = 0; i < dev->last.num_touches; i++) {
DDXTouchPointInfoPtr ddxti = dev->last.touches + i;
if (ddxti->active) {
int j;
int nevents = GetTouchEvents(eventlist, dev, ddxti->ddx_id,
XI_TouchEnd, 0, NULL);
for (j = 0; j < nevents; j++)
mieqProcessDeviceEvent(dev, eventlist + j, NULL);
}
}
input_unlock();
FreeEventList(eventlist, GetMaximumEventsNum());
}
/**
* Generate and deliver a TouchEnd event.
*
* @param dev The device to deliver the event for.
* @param ti The touch point record to deliver the event for.
* @param flags Internal event flags. The called does not need to provide
* TOUCH_CLIENT_ID and TOUCH_POINTER_EMULATED, this function will ensure
* they are set appropriately.
* @param resource The client resource to deliver to, or 0 for all clients.
*/
void
TouchEmitTouchEnd(DeviceIntPtr dev, TouchPointInfoPtr ti, int flags, XID resource)
{
InternalEvent event;
/* We're not processing a touch end for a frozen device */
if (dev->deviceGrab.sync.frozen)
return;
flags |= TOUCH_CLIENT_ID;
if (ti->emulate_pointer)
flags |= TOUCH_POINTER_EMULATED;
DeliverDeviceClassesChangedEvent(ti->sourceid, GetTimeInMillis());
GetDixTouchEnd(&event, dev, ti, flags);
DeliverTouchEvents(dev, ti, &event, resource);
if (ti->num_grabs == 0)
UpdateDeviceState(dev, &event.device_event);
}
void
TouchAcceptAndEnd(DeviceIntPtr dev, int touchid)
{
TouchPointInfoPtr ti = TouchFindByClientID(dev, touchid);
if (!ti)
return;
TouchListenerAcceptReject(dev, ti, 0, XIAcceptTouch);
if (ti->pending_finish)
TouchEmitTouchEnd(dev, ti, 0, 0);
if (ti->num_listeners <= 1)
TouchEndTouch(dev, ti);
}
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