1141 lines
33 KiB
C
1141 lines
33 KiB
C
/*
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* Copyright © 2011 Collabra Ltd.
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* Copyright © 2011 Red Hat, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Author: Daniel Stone <daniel@fooishbar.org>
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include "inputstr.h"
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#include "scrnintstr.h"
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#include "dixgrabs.h"
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#include "eventstr.h"
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#include "exevents.h"
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#include "exglobals.h"
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#include "inpututils.h"
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#include "eventconvert.h"
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#include "windowstr.h"
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#include "mi.h"
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#define TOUCH_HISTORY_SIZE 100
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/* If a touch queue resize is needed, the device id's bit is set. */
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static unsigned char resize_waiting[(MAXDEVICES + 7) / 8];
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/**
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* Some documentation about touch points:
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* The driver submits touch events with it's own (unique) touch point ID.
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* The driver may re-use those IDs, the DDX doesn't care. It just passes on
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* the data to the DIX. In the server, the driver's ID is referred to as the
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* DDX id anyway.
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*
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* On a TouchBegin, we create a DDXTouchPointInfo that contains the DDX id
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* and the client ID that this touchpoint will have. The client ID is the
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* one visible on the protocol.
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*
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* TouchUpdate and TouchEnd will only be processed if there is an active
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* touchpoint with the same DDX id.
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*
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* The DDXTouchPointInfo struct is stored dev->last.touches. When the event
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* being processed, it becomes a TouchPointInfo in dev->touch-touches which
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* contains amongst other things the sprite trace and delivery information.
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*/
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/**
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* Check which devices need a bigger touch event queue and grow their
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* last.touches by half it's current size.
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*
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* @param client Always the serverClient
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* @param closure Always NULL
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*
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* @return Always True. If we fail to grow we probably will topple over soon
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* anyway and re-executing this won't help.
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*/
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static Bool
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TouchResizeQueue(ClientPtr client, void *closure)
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{
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int i;
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OsBlockSignals();
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/* first two ids are reserved */
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for (i = 2; i < MAXDEVICES; i++) {
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DeviceIntPtr dev;
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DDXTouchPointInfoPtr tmp;
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size_t size;
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if (!BitIsOn(resize_waiting, i))
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continue;
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ClearBit(resize_waiting, i);
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/* device may have disappeared by now */
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dixLookupDevice(&dev, i, serverClient, DixWriteAccess);
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if (!dev)
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continue;
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/* Need to grow the queue means dropping events. Grow sufficiently so we
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* don't need to do it often */
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size = dev->last.num_touches + dev->last.num_touches / 2 + 1;
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tmp = reallocarray(dev->last.touches, size, sizeof(*dev->last.touches));
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if (tmp) {
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int j;
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dev->last.touches = tmp;
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for (j = dev->last.num_touches; j < size; j++)
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TouchInitDDXTouchPoint(dev, &dev->last.touches[j]);
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dev->last.num_touches = size;
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}
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}
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OsReleaseSignals();
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return TRUE;
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}
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/**
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* Given the DDX-facing ID (which is _not_ DeviceEvent::detail.touch), find the
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* associated DDXTouchPointInfoRec.
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*
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* @param dev The device to create the touch point for
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* @param ddx_id Touch id assigned by the driver/ddx
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* @param create Create the touchpoint if it cannot be found
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*/
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DDXTouchPointInfoPtr
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TouchFindByDDXID(DeviceIntPtr dev, uint32_t ddx_id, Bool create)
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{
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DDXTouchPointInfoPtr ti;
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int i;
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if (!dev->touch)
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return NULL;
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for (i = 0; i < dev->last.num_touches; i++) {
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ti = &dev->last.touches[i];
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if (ti->active && ti->ddx_id == ddx_id)
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return ti;
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}
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return create ? TouchBeginDDXTouch(dev, ddx_id) : NULL;
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}
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/**
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* Given a unique DDX ID for a touchpoint, create a touchpoint record and
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* return it.
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*
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* If no other touch points are active, mark new touchpoint for pointer
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* emulation.
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*
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* Returns NULL on failure (i.e. if another touch with that ID is already active,
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* allocation failure).
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*/
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DDXTouchPointInfoPtr
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TouchBeginDDXTouch(DeviceIntPtr dev, uint32_t ddx_id)
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{
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static int next_client_id = 1;
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int i;
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TouchClassPtr t = dev->touch;
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DDXTouchPointInfoPtr ti = NULL;
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Bool emulate_pointer;
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if (!t)
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return NULL;
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emulate_pointer = (t->mode == XIDirectTouch);
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/* Look for another active touchpoint with the same DDX ID. DDX
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* touchpoints must be unique. */
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if (TouchFindByDDXID(dev, ddx_id, FALSE))
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return NULL;
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for (i = 0; i < dev->last.num_touches; i++) {
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/* Only emulate pointer events on the first touch */
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if (dev->last.touches[i].active)
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emulate_pointer = FALSE;
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else if (!ti) /* ti is now first non-active touch rec */
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ti = &dev->last.touches[i];
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if (!emulate_pointer && ti)
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break;
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}
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if (ti) {
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int client_id;
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ti->active = TRUE;
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ti->ddx_id = ddx_id;
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client_id = next_client_id;
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next_client_id++;
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if (next_client_id == 0)
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next_client_id = 1;
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ti->client_id = client_id;
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ti->emulate_pointer = emulate_pointer;
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return ti;
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}
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/* If we get here, then we've run out of touches and we need to drop the
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* event (we're inside the SIGIO handler here) schedule a WorkProc to
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* grow the queue for us for next time. */
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ErrorFSigSafe("%s: not enough space for touch events (max %u touchpoints). "
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"Dropping this event.\n", dev->name, dev->last.num_touches);
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if (!BitIsOn(resize_waiting, dev->id)) {
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SetBit(resize_waiting, dev->id);
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QueueWorkProc(TouchResizeQueue, serverClient, NULL);
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}
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return NULL;
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}
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void
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TouchEndDDXTouch(DeviceIntPtr dev, DDXTouchPointInfoPtr ti)
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{
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TouchClassPtr t = dev->touch;
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if (!t)
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return;
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ti->active = FALSE;
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}
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void
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TouchInitDDXTouchPoint(DeviceIntPtr dev, DDXTouchPointInfoPtr ddxtouch)
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{
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memset(ddxtouch, 0, sizeof(*ddxtouch));
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ddxtouch->valuators = valuator_mask_new(dev->valuator->numAxes);
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}
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Bool
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TouchInitTouchPoint(TouchClassPtr t, ValuatorClassPtr v, int index)
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{
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TouchPointInfoPtr ti;
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if (index >= t->num_touches)
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return FALSE;
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ti = &t->touches[index];
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memset(ti, 0, sizeof(*ti));
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ti->valuators = valuator_mask_new(v->numAxes);
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if (!ti->valuators)
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return FALSE;
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ti->sprite.spriteTrace = calloc(32, sizeof(*ti->sprite.spriteTrace));
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if (!ti->sprite.spriteTrace) {
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valuator_mask_free(&ti->valuators);
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return FALSE;
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}
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ti->sprite.spriteTraceSize = 32;
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ti->sprite.spriteTrace[0] = screenInfo.screens[0]->root;
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ti->sprite.hot.pScreen = screenInfo.screens[0];
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ti->sprite.hotPhys.pScreen = screenInfo.screens[0];
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ti->client_id = -1;
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return TRUE;
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}
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void
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TouchFreeTouchPoint(DeviceIntPtr device, int index)
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{
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TouchPointInfoPtr ti;
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int i;
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if (!device->touch || index >= device->touch->num_touches)
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return;
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ti = &device->touch->touches[index];
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if (ti->active)
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TouchEndTouch(device, ti);
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for (i = 0; i < ti->num_listeners; i++)
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TouchRemoveListener(ti, ti->listeners[0].listener);
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valuator_mask_free(&ti->valuators);
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free(ti->sprite.spriteTrace);
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ti->sprite.spriteTrace = NULL;
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free(ti->listeners);
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ti->listeners = NULL;
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free(ti->history);
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ti->history = NULL;
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ti->history_size = 0;
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ti->history_elements = 0;
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}
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/**
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* Given a client-facing ID (e.g. DeviceEvent::detail.touch), find the
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* associated TouchPointInfoRec.
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*/
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TouchPointInfoPtr
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TouchFindByClientID(DeviceIntPtr dev, uint32_t client_id)
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{
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TouchClassPtr t = dev->touch;
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TouchPointInfoPtr ti;
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int i;
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if (!t)
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return NULL;
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for (i = 0; i < t->num_touches; i++) {
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ti = &t->touches[i];
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if (ti->active && ti->client_id == client_id)
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return ti;
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}
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return NULL;
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}
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/**
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* Given a unique ID for a touchpoint, create a touchpoint record in the
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* server.
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*
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* Returns NULL on failure (i.e. if another touch with that ID is already active,
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* allocation failure).
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*/
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TouchPointInfoPtr
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TouchBeginTouch(DeviceIntPtr dev, int sourceid, uint32_t touchid,
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Bool emulate_pointer)
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{
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int i;
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TouchClassPtr t = dev->touch;
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TouchPointInfoPtr ti;
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void *tmp;
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if (!t)
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return NULL;
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/* Look for another active touchpoint with the same client ID. It's
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* technically legitimate for a touchpoint to still exist with the same
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* ID but only once the 32 bits wrap over and you've used up 4 billion
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* touch ids without lifting that one finger off once. In which case
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* you deserve a medal or something, but not error handling code. */
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if (TouchFindByClientID(dev, touchid))
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return NULL;
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try_find_touch:
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for (i = 0; i < t->num_touches; i++) {
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ti = &t->touches[i];
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if (!ti->active) {
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ti->active = TRUE;
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ti->client_id = touchid;
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ti->sourceid = sourceid;
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ti->emulate_pointer = emulate_pointer;
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return ti;
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}
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}
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/* If we get here, then we've run out of touches: enlarge dev->touch and
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* try again. */
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tmp = reallocarray(t->touches, t->num_touches + 1, sizeof(*ti));
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if (tmp) {
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t->touches = tmp;
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t->num_touches++;
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if (TouchInitTouchPoint(t, dev->valuator, t->num_touches - 1))
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goto try_find_touch;
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}
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return NULL;
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}
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/**
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* Releases a touchpoint for use: this must only be called after all events
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* related to that touchpoint have been sent and finalised. Called from
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* ProcessTouchEvent and friends. Not by you.
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*/
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void
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TouchEndTouch(DeviceIntPtr dev, TouchPointInfoPtr ti)
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{
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int i;
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if (ti->emulate_pointer) {
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GrabPtr grab;
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if ((grab = dev->deviceGrab.grab)) {
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if (dev->deviceGrab.fromPassiveGrab &&
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!dev->button->buttonsDown &&
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!dev->touch->buttonsDown && GrabIsPointerGrab(grab))
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(*dev->deviceGrab.DeactivateGrab) (dev);
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}
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}
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for (i = 0; i < ti->num_listeners; i++)
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TouchRemoveListener(ti, ti->listeners[0].listener);
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ti->active = FALSE;
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ti->pending_finish = FALSE;
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ti->sprite.spriteTraceGood = 0;
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free(ti->listeners);
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ti->listeners = NULL;
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ti->num_listeners = 0;
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ti->num_grabs = 0;
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ti->client_id = 0;
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TouchEventHistoryFree(ti);
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valuator_mask_zero(ti->valuators);
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}
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/**
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* Allocate the event history for this touch pointer. Calling this on a
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* touchpoint that already has an event history does nothing but counts as
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* as success.
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*
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* @return TRUE on success, FALSE on allocation errors
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*/
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Bool
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TouchEventHistoryAllocate(TouchPointInfoPtr ti)
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{
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if (ti->history)
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return TRUE;
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ti->history = calloc(TOUCH_HISTORY_SIZE, sizeof(*ti->history));
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ti->history_elements = 0;
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if (ti->history)
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ti->history_size = TOUCH_HISTORY_SIZE;
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return ti->history != NULL;
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}
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void
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TouchEventHistoryFree(TouchPointInfoPtr ti)
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{
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free(ti->history);
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ti->history = NULL;
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ti->history_size = 0;
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ti->history_elements = 0;
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}
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/**
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* Store the given event on the event history (if one exists)
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* A touch event history consists of one TouchBegin and several TouchUpdate
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* events (if applicable) but no TouchEnd event.
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* If more than one TouchBegin is pushed onto the stack, the push is
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* ignored, calling this function multiple times for the TouchBegin is
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* valid.
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*/
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void
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TouchEventHistoryPush(TouchPointInfoPtr ti, const DeviceEvent *ev)
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{
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if (!ti->history)
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return;
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switch (ev->type) {
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case ET_TouchBegin:
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/* don't store the same touchbegin twice */
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if (ti->history_elements > 0)
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return;
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break;
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case ET_TouchUpdate:
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break;
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case ET_TouchEnd:
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return; /* no TouchEnd events in the history */
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default:
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return;
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}
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/* We only store real events in the history */
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if (ev->flags & (TOUCH_CLIENT_ID | TOUCH_REPLAYING))
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return;
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ti->history[ti->history_elements++] = *ev;
|
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/* FIXME: proper overflow fixes */
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if (ti->history_elements > ti->history_size - 1) {
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ti->history_elements = ti->history_size - 1;
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DebugF("source device %d: history size %zu overflowing for touch %u\n",
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ti->sourceid, ti->history_size, ti->client_id);
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}
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}
|
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|
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void
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TouchEventHistoryReplay(TouchPointInfoPtr ti, DeviceIntPtr dev, XID resource)
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{
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int i;
|
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|
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if (!ti->history)
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return;
|
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|
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TouchDeliverDeviceClassesChangedEvent(ti, ti->history[0].time, resource);
|
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|
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for (i = 0; i < ti->history_elements; i++) {
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DeviceEvent *ev = &ti->history[i];
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|
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ev->flags |= TOUCH_REPLAYING;
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ev->resource = resource;
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/* FIXME:
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We're replaying ti->history which contains the TouchBegin +
|
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all TouchUpdates for ti. This needs to be passed on to the next
|
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listener. If that is a touch listener, everything is dandy.
|
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If the TouchBegin however triggers a sync passive grab, the
|
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TouchUpdate events must be sent to EnqueueEvent so the events end
|
|
up in syncEvents.pending to be forwarded correctly in a
|
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subsequent ComputeFreeze().
|
|
|
|
However, if we just send them to EnqueueEvent the sync'ing device
|
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prevents handling of touch events for ownership listeners who
|
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want the events right here, right now.
|
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*/
|
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dev->public.processInputProc((InternalEvent*)ev, dev);
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}
|
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}
|
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|
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void
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TouchDeliverDeviceClassesChangedEvent(TouchPointInfoPtr ti, Time time,
|
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XID resource)
|
|
{
|
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DeviceIntPtr dev;
|
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int num_events = 0;
|
|
InternalEvent dcce;
|
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|
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dixLookupDevice(&dev, ti->sourceid, serverClient, DixWriteAccess);
|
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|
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if (!dev)
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return;
|
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|
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/* UpdateFromMaster generates at most one event */
|
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UpdateFromMaster(&dcce, dev, DEVCHANGE_POINTER_EVENT, &num_events);
|
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BUG_WARN(num_events > 1);
|
|
|
|
if (num_events) {
|
|
dcce.any.time = time;
|
|
/* FIXME: This doesn't do anything */
|
|
dev->public.processInputProc(&dcce, dev);
|
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}
|
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}
|
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|
|
Bool
|
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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].pending_finish &&
|
|
t->touches[i].sprite.spriteTraceGood > 0)
|
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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 = reallocarray(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
|
|
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 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_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 = 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;
|
|
}
|
|
|
|
/* grab listeners are always RT_NONE since we keep the grab pointer */
|
|
TouchAddListener(ti, grab->resource, RT_NONE, grab->grabtype,
|
|
type, 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 = 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, RT_INPUTCLIENT, XI2,
|
|
type, LISTENER_AWAITING_BEGIN, win, NULL);
|
|
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, RT_INPUTCLIENT, XI,
|
|
LISTENER_POINTER_REGULAR, 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 (IsMaster(dev) && (win->eventMask & core_filter)) {
|
|
TouchEventHistoryAllocate(ti);
|
|
TouchAddListener(ti, win->drawable.id, RT_WINDOW, CORE,
|
|
LISTENER_POINTER_REGULAR, 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, RT_OTHERCLIENT, CORE,
|
|
type, 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;
|
|
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;
|
|
|
|
/* 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 = 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;
|
|
|
|
OsBlockSignals();
|
|
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);
|
|
}
|
|
}
|
|
OsReleaseSignals();
|
|
|
|
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;
|
|
TouchDeliverDeviceClassesChangedEvent(ti, GetTimeInMillis(), resource);
|
|
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);
|
|
}
|