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Diffstat (limited to 'xorg-server/dix/touch.c')
| -rw-r--r-- | xorg-server/dix/touch.c | 982 |
1 files changed, 982 insertions, 0 deletions
diff --git a/xorg-server/dix/touch.c b/xorg-server/dix/touch.c new file mode 100644 index 000000000..db0bf334a --- /dev/null +++ b/xorg-server/dix/touch.c @@ -0,0 +1,982 @@ +/* + * 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> + */ + +#ifdef HAVE_DIX_CONFIG_H +#include <dix-config.h> +#endif + +#include "inputstr.h" +#include "scrnintstr.h" +#include "dixgrabs.h" + +#include "eventstr.h" +#include "exevents.h" +#include "inpututils.h" +#include "eventconvert.h" +#include "windowstr.h" +#include "mi.h" + +#define TOUCH_HISTORY_SIZE 100 + + +/* If a touch queue resize is needed, the device id's bit is set. */ +static unsigned char resize_waiting[(MAXDEVICES + 7)/8]; + +/** + * Some documentation about touch points: + * The driver submits touch events with it's 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 it's 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(ClientPtr client, pointer closure) +{ + int i; + + OsBlockSignals(); + + /* first two ids are reserved */ + for (i = 2; i < MAXDEVICES; i++) + { + DeviceIntPtr dev; + DDXTouchPointInfoPtr tmp; + size_t size; + + if (!BitIsOn(resize_waiting, i)) + continue; + + ClearBit(resize_waiting, i); + + /* device may have disappeared by now */ + dixLookupDevice(&dev, i, serverClient, DixWriteAccess); + if (!dev) + continue; + + /* Need to grow the queue means dropping events. Grow sufficiently so we + * don't need to do it often */ + size = dev->last.num_touches + dev->last.num_touches/2 + 1; + + tmp = realloc(dev->last.touches, size * sizeof(*dev->last.touches)); + if (tmp) + { + int i; + dev->last.touches = tmp; + for (i = dev->last.num_touches; i < size; i++) + TouchInitDDXTouchPoint(dev, &dev->last.touches[i]); + dev->last.num_touches = size; + } + + } + OsReleaseSignals(); + + return TRUE; +} + +/** + * 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 = (t->mode == XIDirectTouch); + + if (!t) + return NULL; + + /* Look for another active touchpoint with the same DDX ID. DDX + * touchpoints must be unique. */ + if (TouchFindByDDXID(dev, ddx_id, FALSE)) + return NULL; + + 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) + { + 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; + } + + /* If we get here, then we've run out of touches and we need to drop the + * event (we're inside the SIGIO handler here) schedule a WorkProc to + * grow the queue for us for next time. */ + ErrorF("%s: not enough space for touch events (max %d touchpoints). " + "Dropping this event.\n", dev->name, dev->last.num_touches); + if (!BitIsOn(resize_waiting, dev->id)) { + SetBit(resize_waiting, dev->id); + QueueWorkProc(TouchResizeQueue, serverClient, NULL); + } + + return NULL; +} + +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; + + if (!device->touch || index >= device->touch->num_touches) + return; + ti = &device->touch->touches[index]; + + if (ti->active) + TouchEndTouch(device, ti); + + 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 = realloc(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) +{ + if (ti->emulate_pointer) + { + GrabPtr grab; + DeviceEvent ev; + memset(&ev, 0, sizeof(ev)); + ev.type = ET_TouchEnd; + ev.detail.button = 1; + ev.touchid = ti->client_id; + ev.flags = TOUCH_POINTER_EMULATED|TOUCH_END; + UpdateDeviceState(dev, &ev); + + if ((grab = dev->deviceGrab.grab)) + { + if (dev->deviceGrab.fromPassiveGrab && + !dev->button->buttonsDown && + !dev->touch->buttonsDown && + GrabIsPointerGrab(grab)) + (*dev->deviceGrab.DeactivateGrab)(dev); + } + } + + 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 %d overflowing for touch %u\n", + ti->sourceid, ti->history_size, ti->client_id); + } +} + +void +TouchEventHistoryReplay(TouchPointInfoPtr ti, DeviceIntPtr dev, XID resource) +{ + InternalEvent *tel = InitEventList(GetMaximumEventsNum()); + ValuatorMask *mask = valuator_mask_new(0); + int i, nev; + int flags; + + if (!ti->history) + return; + + valuator_mask_set_double(mask, 0, ti->history[0].valuators.data[0]); + valuator_mask_set_double(mask, 1, ti->history[0].valuators.data[1]); + + flags = TOUCH_CLIENT_ID|TOUCH_REPLAYING; + if (ti->emulate_pointer) + flags |= TOUCH_POINTER_EMULATED; + /* send fake begin event to next owner */ + nev = GetTouchEvents(tel, dev, ti->client_id, XI_TouchBegin, flags, mask); + for (i = 0; i < nev; i++) + DeliverTouchEvents(dev, ti, tel + i, resource); + + valuator_mask_free(&mask); + FreeEventList(tel, GetMaximumEventsNum()); + + /* First event was TouchBegin, already replayed that one */ + for (i = 1; i < ti->history_elements; i++) + { + DeviceEvent *ev = &ti->history[i]; + ev->flags |= TOUCH_REPLAYING; + DeliverTouchEvents(dev, ti, (InternalEvent*)ev, resource); + } +} + +Bool +TouchBuildDependentSpriteTrace(DeviceIntPtr dev, SpritePtr sprite) +{ + int i; + TouchClassPtr t = dev->touch; + WindowPtr *trace; + 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].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; + + if (srcsprite->spriteTraceGood > sprite->spriteTraceSize) + { + trace = realloc(sprite->spriteTrace, + srcsprite->spriteTraceSize * sizeof(*trace)); + if (!trace) + { + sprite->spriteTraceGood = 0; + return FALSE; + } + sprite->spriteTrace = trace; + sprite->spriteTraceSize = srcsprite->spriteTraceGood; + } + memcpy(sprite->spriteTrace, srcsprite->spriteTrace, + srcsprite->spriteTraceGood * sizeof(*trace)); + sprite->spriteTraceGood = srcsprite->spriteTraceGood; + + return TRUE; +} + +/** + * Ensure a window trace is present in ti->sprite, constructing one for + * TouchBegin events. + */ +Bool +TouchEnsureSprite(DeviceIntPtr sourcedev, TouchPointInfoPtr ti, + InternalEvent *ev) +{ + TouchClassPtr t = sourcedev->touch; + SpritePtr sprite = &ti->sprite; + + /* We may not have a sprite if there are no applicable grabs or + * event selections, or if they've disappeared, or if all the grab + * owners have rejected the touch. Don't bother delivering motion + * events if not, but TouchEnd events still need to be processed so + * we can call FinishTouchPoint and release it for later use. */ + if (ev->any.type == ET_TouchEnd) + return TRUE; + else if (ev->any.type != ET_TouchBegin) + return (sprite->spriteTraceGood > 0); + + 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. */ + ti->listeners = calloc(sprite->spriteTraceGood + 1, 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 occured + * @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_WARN(!event); + BUG_WARN(!motion_event); + + 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 = *event; + motion_event->any.type = ET_Motion; + motion_event->device_event.detail.button = 0; + motion_event->device_event.flags = XIPointerEmulated; + + if (nevents > 1) + { + BUG_WARN(!button_event); + *button_event = *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, enum InputLevel level, + enum TouchListenerType type, enum TouchListenerState state) +{ + ti->listeners[ti->num_listeners].listener = resource; + ti->listeners[ti->num_listeners].level = level; + ti->listeners[ti->num_listeners].state = state; + ti->listeners[ti->num_listeners].type = type; + 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++) + { + if (ti->listeners[i].listener == resource) + { + int j; + 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 = LISTENER_AWAITING_BEGIN; + return TRUE; + } + } + return FALSE; +} + +static void +TouchAddGrabListener(DeviceIntPtr dev, TouchPointInfoPtr ti, + InternalEvent *ev, GrabPtr grab) +{ + enum TouchListenerType type = 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 = LISTENER_POINTER_GRAB; + } else if (grab->grabtype == XI || grab->grabtype == CORE) + { + TouchEventHistoryAllocate(ti); + type = LISTENER_POINTER_GRAB; + } + + TouchAddListener(ti, grab->resource, grab->grabtype, + type, LISTENER_AWAITING_BEGIN); + ti->num_grabs++; +} + +/** + * 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 = IsMaster(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 = 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 = LISTENER_POINTER_REGULAR; + } + } + if (!mask) + return FALSE; + + inputMasks = wOtherInputMasks(win); + + if (mask & EVENT_XI2_MASK) + { + 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, XI2, + type, LISTENER_AWAITING_BEGIN); + return TRUE; + } + } + + if (mask & EVENT_XI1_MASK) + { + 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, XI, + LISTENER_POINTER_REGULAR, LISTENER_AWAITING_BEGIN); + return TRUE; + } + } + + if (mask & EVENT_CORE_MASK) + { + int coretype = GetCoreType(TouchGetPointerEventType(ev)); + Mask core_filter = event_get_filter_from_type(dev, coretype); + + /* window owner */ + if (IsMaster(dev) && (win->eventMask & core_filter)) + { + TouchEventHistoryAllocate(ti); + TouchAddListener(ti, win->drawable.id, CORE, + LISTENER_POINTER_REGULAR, LISTENER_AWAITING_BEGIN); + return TRUE; + } + + /* all others */ + nt_list_for_each_entry(iclients, (InputClients*)wOtherClients(win), next) + { + if (!(iclients->mask[XIAllDevices] & core_filter)) + continue; + + TouchEventHistoryAllocate(ti); + TouchAddListener(ti, iclients->resource, CORE, + type, LISTENER_AWAITING_BEGIN); + 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 && + (grab->type != XI_TouchBegin && grab->type != XI_TouchEnd && grab->type != XI_TouchUpdate)) + 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) + TouchAddActiveGrabListener(dev, ti, ev, dev->deviceGrab.grab); + + /* 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 AllowSome() + */ +void +TouchRemovePointerGrab(DeviceIntPtr dev) +{ + TouchPointInfoPtr ti; + GrabPtr grab; + DeviceEvent *ev; + + if (!dev->touch) + return; + + grab = dev->deviceGrab.grab; + if (!grab) + return; + + ev = dev->deviceGrab.sync.event; + if (!IsTouchEvent((InternalEvent*)ev)) + return; + + ti = TouchFindByClientID(dev, ev->touchid); + if (!ti) + return; +} + +/* 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 (ti->listeners[j].listener != resource) + continue; + + nev = GetTouchOwnershipEvents(events, dev, ti, XIRejectTouch, + resource, 0); + for (k = 0; k < nev; k++) + mieqProcessDeviceEvent(dev, events + k, NULL); + + break; + } + } + } + + FreeEventList(events, GetMaximumEventsNum()); +} |