2013-06-07 11:28:45 -06:00
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/*
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* Copyright 2012 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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* Copyright © 2002 Keith Packard
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of Keith Packard not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. Keith Packard makes no
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* representations about the suitability of this software for any purpose. It
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* is provided "as is" without express or implied warranty.
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*
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* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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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 "xibarriers.h"
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#include "scrnintstr.h"
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#include "cursorstr.h"
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#include "dixevents.h"
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#include "servermd.h"
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#include "mipointer.h"
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#include "inputstr.h"
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#include "windowstr.h"
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#include "xace.h"
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#include "list.h"
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#include "exglobals.h"
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#include "eventstr.h"
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#include "mi.h"
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RESTYPE PointerBarrierType;
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static DevPrivateKeyRec BarrierScreenPrivateKeyRec;
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#define BarrierScreenPrivateKey (&BarrierScreenPrivateKeyRec)
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typedef struct PointerBarrierClient *PointerBarrierClientPtr;
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struct PointerBarrierDevice {
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struct xorg_list entry;
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int deviceid;
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Time last_timestamp;
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int barrier_event_id;
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int release_event_id;
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Bool hit;
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Bool seen;
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};
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struct PointerBarrierClient {
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XID id;
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ScreenPtr screen;
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Window window;
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struct PointerBarrier barrier;
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struct xorg_list entry;
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/* num_devices/device_ids are devices the barrier applies to */
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int num_devices;
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int *device_ids; /* num_devices */
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/* per_device keeps track of devices actually blocked by barriers */
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struct xorg_list per_device;
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};
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typedef struct _BarrierScreen {
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struct xorg_list barriers;
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} BarrierScreenRec, *BarrierScreenPtr;
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#define GetBarrierScreen(s) ((BarrierScreenPtr)dixLookupPrivate(&(s)->devPrivates, BarrierScreenPrivateKey))
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#define GetBarrierScreenIfSet(s) GetBarrierScreen(s)
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#define SetBarrierScreen(s,p) dixSetPrivate(&(s)->devPrivates, BarrierScreenPrivateKey, p)
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static struct PointerBarrierDevice *AllocBarrierDevice(void)
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{
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struct PointerBarrierDevice *pbd = NULL;
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pbd = malloc(sizeof(struct PointerBarrierDevice));
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if (!pbd)
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return NULL;
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pbd->deviceid = -1; /* must be set by caller */
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pbd->barrier_event_id = 1;
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pbd->release_event_id = 0;
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pbd->hit = FALSE;
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pbd->seen = FALSE;
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xorg_list_init(&pbd->entry);
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return pbd;
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}
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static void FreePointerBarrierClient(struct PointerBarrierClient *c)
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{
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struct PointerBarrierDevice *pbd = NULL, *tmp = NULL;
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xorg_list_for_each_entry_safe(pbd, tmp, &c->per_device, entry) {
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free(pbd);
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}
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free(c);
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}
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static struct PointerBarrierDevice *GetBarrierDevice(struct PointerBarrierClient *c, int deviceid)
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{
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struct PointerBarrierDevice *pbd = NULL;
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xorg_list_for_each_entry(pbd, &c->per_device, entry) {
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if (pbd->deviceid == deviceid)
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break;
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}
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BUG_WARN(!pbd);
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return pbd;
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}
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static BOOL
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barrier_is_horizontal(const struct PointerBarrier *barrier)
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{
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return barrier->y1 == barrier->y2;
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}
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static BOOL
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barrier_is_vertical(const struct PointerBarrier *barrier)
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{
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return barrier->x1 == barrier->x2;
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}
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/**
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* @return The set of barrier movement directions the movement vector
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* x1/y1 → x2/y2 represents.
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*/
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int
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barrier_get_direction(int x1, int y1, int x2, int y2)
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{
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int direction = 0;
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/* which way are we trying to go */
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if (x2 > x1)
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direction |= BarrierPositiveX;
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if (x2 < x1)
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direction |= BarrierNegativeX;
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if (y2 > y1)
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direction |= BarrierPositiveY;
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if (y2 < y1)
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direction |= BarrierNegativeY;
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return direction;
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}
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/**
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* Test if the barrier may block movement in the direction defined by
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* x1/y1 → x2/y2. This function only tests whether the directions could be
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* blocked, it does not test if the barrier actually blocks the movement.
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*
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* @return TRUE if the barrier blocks the direction of movement or FALSE
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* otherwise.
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*/
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BOOL
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barrier_is_blocking_direction(const struct PointerBarrier * barrier,
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int direction)
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{
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/* Barriers define which way is ok, not which way is blocking */
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return (barrier->directions & direction) != direction;
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}
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static BOOL
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inside_segment(int v, int v1, int v2)
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{
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if (v1 < 0 && v2 < 0) /* line */
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return TRUE;
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else if (v1 < 0) /* ray */
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return v <= v2;
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else if (v2 < 0) /* ray */
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return v >= v1;
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else /* line segment */
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return v >= v1 && v <= v2;
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}
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#define T(v, a, b) (((float)v) - (a)) / ((b) - (a))
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#define F(t, a, b) ((t) * ((a) - (b)) + (a))
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/**
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* Test if the movement vector x1/y1 → x2/y2 is intersecting with the
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* barrier. A movement vector with the startpoint or endpoint adjacent to
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* the barrier itself counts as intersecting.
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*
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* @param x1 X start coordinate of movement vector
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* @param y1 Y start coordinate of movement vector
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* @param x2 X end coordinate of movement vector
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* @param y2 Y end coordinate of movement vector
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* @param[out] distance The distance between the start point and the
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* intersection with the barrier (if applicable).
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* @return TRUE if the barrier intersects with the given vector
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*/
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BOOL
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barrier_is_blocking(const struct PointerBarrier * barrier,
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int x1, int y1, int x2, int y2, double *distance)
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{
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if (barrier_is_vertical(barrier)) {
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float t, y;
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t = T(barrier->x1, x1, x2);
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if (t < 0 || t > 1)
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return FALSE;
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/* Edge case: moving away from barrier. */
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if (x2 > x1 && t == 0)
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return FALSE;
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y = F(t, y1, y2);
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if (!inside_segment(y, barrier->y1, barrier->y2))
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return FALSE;
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*distance = sqrt((pow(y - y1, 2) + pow(barrier->x1 - x1, 2)));
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return TRUE;
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}
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else {
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float t, x;
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t = T(barrier->y1, y1, y2);
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if (t < 0 || t > 1)
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return FALSE;
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/* Edge case: moving away from barrier. */
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if (y2 > y1 && t == 0)
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return FALSE;
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x = F(t, x1, x2);
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if (!inside_segment(x, barrier->x1, barrier->x2))
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return FALSE;
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*distance = sqrt((pow(x - x1, 2) + pow(barrier->y1 - y1, 2)));
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return TRUE;
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}
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}
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#define HIT_EDGE_EXTENTS 2
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static BOOL
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barrier_inside_hit_box(struct PointerBarrier *barrier, int x, int y)
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{
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int x1, x2, y1, y2;
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int dir;
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x1 = barrier->x1;
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x2 = barrier->x2;
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y1 = barrier->y1;
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y2 = barrier->y2;
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dir = ~(barrier->directions);
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if (barrier_is_vertical(barrier)) {
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if (dir & BarrierPositiveX)
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x1 -= HIT_EDGE_EXTENTS;
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if (dir & BarrierNegativeX)
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x2 += HIT_EDGE_EXTENTS;
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}
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if (barrier_is_horizontal(barrier)) {
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if (dir & BarrierPositiveY)
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y1 -= HIT_EDGE_EXTENTS;
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if (dir & BarrierNegativeY)
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y2 += HIT_EDGE_EXTENTS;
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}
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return x >= x1 && x <= x2 && y >= y1 && y <= y2;
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}
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static BOOL
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barrier_blocks_device(struct PointerBarrierClient *client,
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DeviceIntPtr dev)
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{
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int i;
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int master_id;
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/* Clients with no devices are treated as
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* if they specified XIAllDevices. */
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if (client->num_devices == 0)
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return TRUE;
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master_id = GetMaster(dev, POINTER_OR_FLOAT)->id;
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for (i = 0; i < client->num_devices; i++) {
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int device_id = client->device_ids[i];
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if (device_id == XIAllDevices ||
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device_id == XIAllMasterDevices ||
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device_id == master_id)
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return TRUE;
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}
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return FALSE;
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}
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/**
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* Find the nearest barrier client that is blocking movement from x1/y1 to x2/y2.
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*
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* @param dir Only barriers blocking movement in direction dir are checked
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* @param x1 X start coordinate of movement vector
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* @param y1 Y start coordinate of movement vector
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* @param x2 X end coordinate of movement vector
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* @param y2 Y end coordinate of movement vector
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* @return The barrier nearest to the movement origin that blocks this movement.
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*/
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static struct PointerBarrierClient *
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barrier_find_nearest(BarrierScreenPtr cs, DeviceIntPtr dev,
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int dir,
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int x1, int y1, int x2, int y2)
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{
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struct PointerBarrierClient *c, *nearest = NULL;
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double min_distance = INT_MAX; /* can't get higher than that in X anyway */
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xorg_list_for_each_entry(c, &cs->barriers, entry) {
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struct PointerBarrier *b = &c->barrier;
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struct PointerBarrierDevice *pbd;
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double distance;
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pbd = GetBarrierDevice(c, dev->id);
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if (pbd->seen)
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continue;
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if (!barrier_is_blocking_direction(b, dir))
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continue;
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if (!barrier_blocks_device(c, dev))
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continue;
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if (barrier_is_blocking(b, x1, y1, x2, y2, &distance)) {
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if (min_distance > distance) {
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min_distance = distance;
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nearest = c;
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}
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}
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}
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return nearest;
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}
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/**
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* Clamp to the given barrier given the movement direction specified in dir.
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*
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* @param barrier The barrier to clamp to
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* @param dir The movement direction
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* @param[out] x The clamped x coordinate.
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* @param[out] y The clamped x coordinate.
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*/
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void
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barrier_clamp_to_barrier(struct PointerBarrier *barrier, int dir, int *x,
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int *y)
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{
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if (barrier_is_vertical(barrier)) {
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if ((dir & BarrierNegativeX) & ~barrier->directions)
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*x = barrier->x1;
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if ((dir & BarrierPositiveX) & ~barrier->directions)
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*x = barrier->x1 - 1;
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}
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if (barrier_is_horizontal(barrier)) {
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if ((dir & BarrierNegativeY) & ~barrier->directions)
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*y = barrier->y1;
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|
|
if ((dir & BarrierPositiveY) & ~barrier->directions)
|
|
|
|
*y = barrier->y1 - 1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
input_constrain_cursor(DeviceIntPtr dev, ScreenPtr screen,
|
|
|
|
int current_x, int current_y,
|
|
|
|
int dest_x, int dest_y,
|
|
|
|
int *out_x, int *out_y,
|
|
|
|
int *nevents, InternalEvent* events)
|
|
|
|
{
|
|
|
|
/* Clamped coordinates here refer to screen edge clamping. */
|
|
|
|
BarrierScreenPtr cs = GetBarrierScreen(screen);
|
|
|
|
int x = dest_x,
|
|
|
|
y = dest_y;
|
|
|
|
int dir;
|
|
|
|
struct PointerBarrier *nearest = NULL;
|
|
|
|
PointerBarrierClientPtr c;
|
|
|
|
Time ms = GetTimeInMillis();
|
|
|
|
BarrierEvent ev = {
|
|
|
|
.header = ET_Internal,
|
|
|
|
.type = 0,
|
|
|
|
.length = sizeof (BarrierEvent),
|
|
|
|
.time = ms,
|
|
|
|
.deviceid = dev->id,
|
|
|
|
.sourceid = dev->id,
|
|
|
|
.dx = dest_x - current_x,
|
|
|
|
.dy = dest_y - current_y,
|
|
|
|
.root = screen->root->drawable.id,
|
|
|
|
};
|
|
|
|
InternalEvent *barrier_events = events;
|
|
|
|
DeviceIntPtr master;
|
|
|
|
|
|
|
|
if (nevents)
|
|
|
|
*nevents = 0;
|
|
|
|
|
|
|
|
if (xorg_list_is_empty(&cs->barriers) || IsFloating(dev))
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
/**
|
|
|
|
* This function is only called for slave devices, but pointer-barriers
|
|
|
|
* are for master-devices only. Flip the device to the master here,
|
|
|
|
* continue with that.
|
|
|
|
*/
|
|
|
|
master = GetMaster(dev, MASTER_POINTER);
|
|
|
|
|
|
|
|
/* How this works:
|
|
|
|
* Given the origin and the movement vector, get the nearest barrier
|
|
|
|
* to the origin that is blocking the movement.
|
|
|
|
* Clamp to that barrier.
|
|
|
|
* Then, check from the clamped intersection to the original
|
|
|
|
* destination, again finding the nearest barrier and clamping.
|
|
|
|
*/
|
|
|
|
dir = barrier_get_direction(current_x, current_y, x, y);
|
|
|
|
|
|
|
|
while (dir != 0) {
|
|
|
|
int new_sequence;
|
|
|
|
struct PointerBarrierDevice *pbd;
|
|
|
|
|
|
|
|
c = barrier_find_nearest(cs, master, dir, current_x, current_y, x, y);
|
|
|
|
if (!c)
|
|
|
|
break;
|
|
|
|
|
|
|
|
nearest = &c->barrier;
|
|
|
|
|
|
|
|
pbd = GetBarrierDevice(c, master->id);
|
|
|
|
new_sequence = !pbd->hit;
|
|
|
|
|
|
|
|
pbd->seen = TRUE;
|
|
|
|
pbd->hit = TRUE;
|
|
|
|
|
|
|
|
if (pbd->barrier_event_id == pbd->release_event_id)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
ev.type = ET_BarrierHit;
|
|
|
|
barrier_clamp_to_barrier(nearest, dir, &x, &y);
|
|
|
|
|
|
|
|
if (barrier_is_vertical(nearest)) {
|
|
|
|
dir &= ~(BarrierNegativeX | BarrierPositiveX);
|
|
|
|
current_x = x;
|
|
|
|
}
|
|
|
|
else if (barrier_is_horizontal(nearest)) {
|
|
|
|
dir &= ~(BarrierNegativeY | BarrierPositiveY);
|
|
|
|
current_y = y;
|
|
|
|
}
|
|
|
|
|
|
|
|
ev.flags = 0;
|
|
|
|
ev.event_id = pbd->barrier_event_id;
|
|
|
|
ev.barrierid = c->id;
|
|
|
|
|
|
|
|
ev.dt = new_sequence ? 0 : ms - pbd->last_timestamp;
|
|
|
|
ev.window = c->window;
|
|
|
|
pbd->last_timestamp = ms;
|
|
|
|
|
|
|
|
/* root x/y is filled in later */
|
|
|
|
|
|
|
|
barrier_events->barrier_event = ev;
|
|
|
|
barrier_events++;
|
|
|
|
*nevents += 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
xorg_list_for_each_entry(c, &cs->barriers, entry) {
|
|
|
|
struct PointerBarrierDevice *pbd;
|
|
|
|
int flags = 0;
|
|
|
|
|
|
|
|
pbd = GetBarrierDevice(c, master->id);
|
|
|
|
pbd->seen = FALSE;
|
|
|
|
if (!pbd->hit)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
if (barrier_inside_hit_box(&c->barrier, x, y))
|
|
|
|
continue;
|
|
|
|
|
|
|
|
pbd->hit = FALSE;
|
|
|
|
|
|
|
|
ev.type = ET_BarrierLeave;
|
|
|
|
|
|
|
|
if (pbd->barrier_event_id == pbd->release_event_id)
|
|
|
|
flags |= XIBarrierPointerReleased;
|
|
|
|
|
|
|
|
ev.flags = flags;
|
|
|
|
ev.event_id = pbd->barrier_event_id;
|
|
|
|
ev.barrierid = c->id;
|
|
|
|
|
|
|
|
ev.dt = ms - pbd->last_timestamp;
|
|
|
|
ev.window = c->window;
|
|
|
|
pbd->last_timestamp = ms;
|
|
|
|
|
|
|
|
/* root x/y is filled in later */
|
|
|
|
|
|
|
|
barrier_events->barrier_event = ev;
|
|
|
|
barrier_events++;
|
|
|
|
*nevents += 1;
|
|
|
|
|
|
|
|
/* If we've left the hit box, this is the
|
|
|
|
* start of a new event ID. */
|
|
|
|
pbd->barrier_event_id++;
|
|
|
|
}
|
|
|
|
|
|
|
|
out:
|
|
|
|
*out_x = x;
|
|
|
|
*out_y = y;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
sort_min_max(INT16 *a, INT16 *b)
|
|
|
|
{
|
|
|
|
INT16 A, B;
|
|
|
|
if (*a < 0 || *b < 0)
|
|
|
|
return;
|
|
|
|
A = *a;
|
|
|
|
B = *b;
|
|
|
|
*a = min(A, B);
|
|
|
|
*b = max(A, B);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
CreatePointerBarrierClient(ClientPtr client,
|
|
|
|
xXFixesCreatePointerBarrierReq * stuff,
|
|
|
|
PointerBarrierClientPtr *client_out)
|
|
|
|
{
|
|
|
|
WindowPtr pWin;
|
|
|
|
ScreenPtr screen;
|
|
|
|
BarrierScreenPtr cs;
|
|
|
|
int err;
|
|
|
|
int size;
|
|
|
|
int i;
|
|
|
|
struct PointerBarrierClient *ret;
|
|
|
|
CARD16 *in_devices;
|
|
|
|
DeviceIntPtr dev;
|
|
|
|
|
|
|
|
size = sizeof(*ret) + sizeof(DeviceIntPtr) * stuff->num_devices;
|
|
|
|
ret = malloc(size);
|
|
|
|
|
|
|
|
if (!ret) {
|
|
|
|
return BadAlloc;
|
|
|
|
}
|
|
|
|
|
|
|
|
xorg_list_init(&ret->per_device);
|
|
|
|
|
|
|
|
err = dixLookupWindow(&pWin, stuff->window, client, DixReadAccess);
|
|
|
|
if (err != Success) {
|
|
|
|
client->errorValue = stuff->window;
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
|
|
|
|
screen = pWin->drawable.pScreen;
|
|
|
|
cs = GetBarrierScreen(screen);
|
|
|
|
|
|
|
|
ret->screen = screen;
|
|
|
|
ret->window = stuff->window;
|
|
|
|
ret->num_devices = stuff->num_devices;
|
|
|
|
if (ret->num_devices > 0)
|
|
|
|
ret->device_ids = (int*)&ret[1];
|
|
|
|
else
|
|
|
|
ret->device_ids = NULL;
|
|
|
|
|
|
|
|
in_devices = (CARD16 *) &stuff[1];
|
|
|
|
for (i = 0; i < stuff->num_devices; i++) {
|
|
|
|
int device_id = in_devices[i];
|
|
|
|
DeviceIntPtr device;
|
|
|
|
|
|
|
|
if ((err = dixLookupDevice (&device, device_id,
|
|
|
|
client, DixReadAccess))) {
|
|
|
|
client->errorValue = device_id;
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!IsMaster (device)) {
|
|
|
|
client->errorValue = device_id;
|
|
|
|
err = BadDevice;
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
|
|
|
|
ret->device_ids[i] = device_id;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Alloc one per master pointer, they're the ones that can be blocked */
|
|
|
|
xorg_list_init(&ret->per_device);
|
|
|
|
nt_list_for_each_entry(dev, inputInfo.devices, next) {
|
|
|
|
struct PointerBarrierDevice *pbd;
|
|
|
|
|
|
|
|
if (dev->type != MASTER_POINTER)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
pbd = AllocBarrierDevice();
|
|
|
|
if (!pbd) {
|
|
|
|
err = BadAlloc;
|
|
|
|
goto error;
|
|
|
|
}
|
|
|
|
pbd->deviceid = dev->id;
|
|
|
|
|
|
|
|
xorg_list_add(&pbd->entry, &ret->per_device);
|
|
|
|
}
|
|
|
|
|
|
|
|
ret->id = stuff->barrier;
|
|
|
|
ret->barrier.x1 = stuff->x1;
|
|
|
|
ret->barrier.x2 = stuff->x2;
|
|
|
|
ret->barrier.y1 = stuff->y1;
|
|
|
|
ret->barrier.y2 = stuff->y2;
|
|
|
|
sort_min_max(&ret->barrier.x1, &ret->barrier.x2);
|
|
|
|
sort_min_max(&ret->barrier.y1, &ret->barrier.y2);
|
|
|
|
ret->barrier.directions = stuff->directions & 0x0f;
|
|
|
|
if (barrier_is_horizontal(&ret->barrier))
|
|
|
|
ret->barrier.directions &= ~(BarrierPositiveX | BarrierNegativeX);
|
|
|
|
if (barrier_is_vertical(&ret->barrier))
|
|
|
|
ret->barrier.directions &= ~(BarrierPositiveY | BarrierNegativeY);
|
|
|
|
xorg_list_add(&ret->entry, &cs->barriers);
|
|
|
|
|
|
|
|
*client_out = ret;
|
|
|
|
return Success;
|
|
|
|
|
|
|
|
error:
|
|
|
|
*client_out = NULL;
|
|
|
|
FreePointerBarrierClient(ret);
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
BarrierFreeBarrier(void *data, XID id)
|
|
|
|
{
|
|
|
|
struct PointerBarrierClient *c;
|
|
|
|
Time ms = GetTimeInMillis();
|
|
|
|
DeviceIntPtr dev = NULL;
|
|
|
|
ScreenPtr screen;
|
|
|
|
|
|
|
|
c = container_of(data, struct PointerBarrierClient, barrier);
|
|
|
|
screen = c->screen;
|
|
|
|
|
|
|
|
for (dev = inputInfo.devices; dev; dev = dev->next) {
|
|
|
|
struct PointerBarrierDevice *pbd;
|
|
|
|
int root_x, root_y;
|
|
|
|
BarrierEvent ev = {
|
|
|
|
.header = ET_Internal,
|
|
|
|
.type = ET_BarrierLeave,
|
|
|
|
.length = sizeof (BarrierEvent),
|
|
|
|
.time = ms,
|
|
|
|
/* .deviceid */
|
|
|
|
.sourceid = 0,
|
|
|
|
.barrierid = c->id,
|
|
|
|
.window = c->window,
|
|
|
|
.root = screen->root->drawable.id,
|
|
|
|
.dx = 0,
|
|
|
|
.dy = 0,
|
|
|
|
/* .root_x */
|
|
|
|
/* .root_y */
|
|
|
|
/* .dt */
|
|
|
|
/* .event_id */
|
|
|
|
.flags = XIBarrierPointerReleased,
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
if (dev->type != MASTER_POINTER)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
pbd = GetBarrierDevice(c, dev->id);
|
|
|
|
if (!pbd->hit)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
ev.deviceid = dev->id;
|
|
|
|
ev.event_id = pbd->barrier_event_id;
|
|
|
|
ev.dt = ms - pbd->last_timestamp;
|
|
|
|
|
|
|
|
GetSpritePosition(dev, &root_x, &root_y);
|
|
|
|
ev.root_x = root_x;
|
|
|
|
ev.root_y = root_y;
|
|
|
|
|
|
|
|
mieqEnqueue(dev, (InternalEvent *) &ev);
|
|
|
|
}
|
|
|
|
|
|
|
|
xorg_list_del(&c->entry);
|
|
|
|
|
|
|
|
FreePointerBarrierClient(c);
|
|
|
|
return Success;
|
|
|
|
}
|
|
|
|
|
2014-09-27 11:52:59 -06:00
|
|
|
static void add_master_func(void *res, XID id, void *devid)
|
2013-06-07 11:28:45 -06:00
|
|
|
{
|
|
|
|
struct PointerBarrier *b;
|
|
|
|
struct PointerBarrierClient *barrier;
|
|
|
|
struct PointerBarrierDevice *pbd;
|
|
|
|
int *deviceid = devid;
|
|
|
|
|
|
|
|
b = res;
|
|
|
|
barrier = container_of(b, struct PointerBarrierClient, barrier);
|
|
|
|
|
|
|
|
|
|
|
|
pbd = AllocBarrierDevice();
|
|
|
|
pbd->deviceid = *deviceid;
|
|
|
|
|
|
|
|
xorg_list_add(&pbd->entry, &barrier->per_device);
|
|
|
|
}
|
|
|
|
|
2014-09-27 11:52:59 -06:00
|
|
|
static void remove_master_func(void *res, XID id, void *devid)
|
2013-06-07 11:28:45 -06:00
|
|
|
{
|
|
|
|
struct PointerBarrierDevice *pbd;
|
|
|
|
struct PointerBarrierClient *barrier;
|
|
|
|
struct PointerBarrier *b;
|
|
|
|
DeviceIntPtr dev;
|
|
|
|
int *deviceid = devid;
|
|
|
|
int rc;
|
|
|
|
Time ms = GetTimeInMillis();
|
|
|
|
|
|
|
|
rc = dixLookupDevice(&dev, *deviceid, serverClient, DixSendAccess);
|
|
|
|
if (rc != Success)
|
|
|
|
return;
|
|
|
|
|
|
|
|
b = res;
|
|
|
|
barrier = container_of(b, struct PointerBarrierClient, barrier);
|
|
|
|
|
|
|
|
pbd = GetBarrierDevice(barrier, *deviceid);
|
|
|
|
|
|
|
|
if (pbd->hit) {
|
|
|
|
BarrierEvent ev = {
|
|
|
|
.header = ET_Internal,
|
|
|
|
.type =ET_BarrierLeave,
|
|
|
|
.length = sizeof (BarrierEvent),
|
|
|
|
.time = ms,
|
|
|
|
.deviceid = *deviceid,
|
|
|
|
.sourceid = 0,
|
|
|
|
.dx = 0,
|
|
|
|
.dy = 0,
|
|
|
|
.root = barrier->screen->root->drawable.id,
|
|
|
|
.window = barrier->window,
|
|
|
|
.dt = ms - pbd->last_timestamp,
|
|
|
|
.flags = XIBarrierPointerReleased,
|
|
|
|
.event_id = pbd->barrier_event_id,
|
|
|
|
.barrierid = barrier->id,
|
|
|
|
};
|
|
|
|
|
|
|
|
mieqEnqueue(dev, (InternalEvent *) &ev);
|
|
|
|
}
|
|
|
|
|
|
|
|
xorg_list_del(&pbd->entry);
|
|
|
|
free(pbd);
|
|
|
|
}
|
|
|
|
|
|
|
|
void XIBarrierNewMasterDevice(ClientPtr client, int deviceid)
|
|
|
|
{
|
|
|
|
FindClientResourcesByType(client, PointerBarrierType, add_master_func, &deviceid);
|
|
|
|
}
|
|
|
|
|
|
|
|
void XIBarrierRemoveMasterDevice(ClientPtr client, int deviceid)
|
|
|
|
{
|
|
|
|
FindClientResourcesByType(client, PointerBarrierType, remove_master_func, &deviceid);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
XICreatePointerBarrier(ClientPtr client,
|
|
|
|
xXFixesCreatePointerBarrierReq * stuff)
|
|
|
|
{
|
|
|
|
int err;
|
|
|
|
struct PointerBarrierClient *barrier;
|
|
|
|
struct PointerBarrier b;
|
|
|
|
|
|
|
|
b.x1 = stuff->x1;
|
|
|
|
b.x2 = stuff->x2;
|
|
|
|
b.y1 = stuff->y1;
|
|
|
|
b.y2 = stuff->y2;
|
|
|
|
|
|
|
|
if (!barrier_is_horizontal(&b) && !barrier_is_vertical(&b))
|
|
|
|
return BadValue;
|
|
|
|
|
|
|
|
/* no 0-sized barriers */
|
|
|
|
if (barrier_is_horizontal(&b) && barrier_is_vertical(&b))
|
|
|
|
return BadValue;
|
|
|
|
|
|
|
|
/* no infinite barriers on the wrong axis */
|
|
|
|
if (barrier_is_horizontal(&b) && (b.y1 < 0 || b.y2 < 0))
|
|
|
|
return BadValue;
|
|
|
|
|
|
|
|
if (barrier_is_vertical(&b) && (b.x1 < 0 || b.x2 < 0))
|
|
|
|
return BadValue;
|
|
|
|
|
|
|
|
if ((err = CreatePointerBarrierClient(client, stuff, &barrier)))
|
|
|
|
return err;
|
|
|
|
|
|
|
|
if (!AddResource(stuff->barrier, PointerBarrierType, &barrier->barrier))
|
|
|
|
return BadAlloc;
|
|
|
|
|
|
|
|
return Success;
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
XIDestroyPointerBarrier(ClientPtr client,
|
|
|
|
xXFixesDestroyPointerBarrierReq * stuff)
|
|
|
|
{
|
|
|
|
int err;
|
|
|
|
void *barrier;
|
|
|
|
|
|
|
|
err = dixLookupResourceByType((void **) &barrier, stuff->barrier,
|
|
|
|
PointerBarrierType, client, DixDestroyAccess);
|
|
|
|
if (err != Success) {
|
|
|
|
client->errorValue = stuff->barrier;
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (CLIENT_ID(stuff->barrier) != client->index)
|
|
|
|
return BadAccess;
|
|
|
|
|
|
|
|
FreeResource(stuff->barrier, RT_NONE);
|
|
|
|
return Success;
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
SProcXIBarrierReleasePointer(ClientPtr client)
|
|
|
|
{
|
|
|
|
xXIBarrierReleasePointerInfo *info;
|
|
|
|
REQUEST(xXIBarrierReleasePointerReq);
|
|
|
|
int i;
|
|
|
|
|
|
|
|
swaps(&stuff->length);
|
2017-10-14 03:29:01 -06:00
|
|
|
REQUEST_AT_LEAST_SIZE(xXIBarrierReleasePointerReq);
|
|
|
|
|
2013-06-07 11:28:45 -06:00
|
|
|
swapl(&stuff->num_barriers);
|
2017-10-14 03:30:50 -06:00
|
|
|
if (stuff->num_barriers > UINT32_MAX / sizeof(xXIBarrierReleasePointerInfo))
|
|
|
|
return BadLength;
|
2017-10-14 03:29:01 -06:00
|
|
|
REQUEST_FIXED_SIZE(xXIBarrierReleasePointerReq, stuff->num_barriers * sizeof(xXIBarrierReleasePointerInfo));
|
|
|
|
|
|
|
|
info = (xXIBarrierReleasePointerInfo*) &stuff[1];
|
2013-06-07 11:28:45 -06:00
|
|
|
for (i = 0; i < stuff->num_barriers; i++, info++) {
|
|
|
|
swaps(&info->deviceid);
|
|
|
|
swapl(&info->barrier);
|
|
|
|
swapl(&info->eventid);
|
|
|
|
}
|
|
|
|
|
|
|
|
return (ProcXIBarrierReleasePointer(client));
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
ProcXIBarrierReleasePointer(ClientPtr client)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
int err;
|
|
|
|
struct PointerBarrierClient *barrier;
|
|
|
|
struct PointerBarrier *b;
|
|
|
|
xXIBarrierReleasePointerInfo *info;
|
|
|
|
|
|
|
|
REQUEST(xXIBarrierReleasePointerReq);
|
2017-10-14 03:30:50 -06:00
|
|
|
REQUEST_AT_LEAST_SIZE(xXIBarrierReleasePointerReq);
|
|
|
|
if (stuff->num_barriers > UINT32_MAX / sizeof(xXIBarrierReleasePointerInfo))
|
|
|
|
return BadLength;
|
2017-10-14 03:29:01 -06:00
|
|
|
REQUEST_FIXED_SIZE(xXIBarrierReleasePointerReq, stuff->num_barriers * sizeof(xXIBarrierReleasePointerInfo));
|
2013-06-07 11:28:45 -06:00
|
|
|
|
|
|
|
info = (xXIBarrierReleasePointerInfo*) &stuff[1];
|
|
|
|
for (i = 0; i < stuff->num_barriers; i++, info++) {
|
|
|
|
struct PointerBarrierDevice *pbd;
|
|
|
|
DeviceIntPtr dev;
|
|
|
|
CARD32 barrier_id, event_id;
|
|
|
|
_X_UNUSED CARD32 device_id;
|
|
|
|
|
|
|
|
barrier_id = info->barrier;
|
|
|
|
event_id = info->eventid;
|
|
|
|
|
|
|
|
err = dixLookupDevice(&dev, info->deviceid, client, DixReadAccess);
|
|
|
|
if (err != Success) {
|
|
|
|
client->errorValue = BadDevice;
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
err = dixLookupResourceByType((void **) &b, barrier_id,
|
|
|
|
PointerBarrierType, client, DixReadAccess);
|
|
|
|
if (err != Success) {
|
|
|
|
client->errorValue = barrier_id;
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (CLIENT_ID(barrier_id) != client->index)
|
|
|
|
return BadAccess;
|
|
|
|
|
|
|
|
|
|
|
|
barrier = container_of(b, struct PointerBarrierClient, barrier);
|
|
|
|
|
|
|
|
pbd = GetBarrierDevice(barrier, dev->id);
|
|
|
|
|
|
|
|
if (pbd->barrier_event_id == event_id)
|
|
|
|
pbd->release_event_id = event_id;
|
|
|
|
}
|
|
|
|
|
|
|
|
return Success;
|
|
|
|
}
|
|
|
|
|
|
|
|
Bool
|
|
|
|
XIBarrierInit(void)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
if (!dixRegisterPrivateKey(&BarrierScreenPrivateKeyRec, PRIVATE_SCREEN, 0))
|
|
|
|
return FALSE;
|
|
|
|
|
|
|
|
for (i = 0; i < screenInfo.numScreens; i++) {
|
|
|
|
ScreenPtr pScreen = screenInfo.screens[i];
|
|
|
|
BarrierScreenPtr cs;
|
|
|
|
|
|
|
|
cs = (BarrierScreenPtr) calloc(1, sizeof(BarrierScreenRec));
|
|
|
|
if (!cs)
|
|
|
|
return FALSE;
|
|
|
|
xorg_list_init(&cs->barriers);
|
|
|
|
SetBarrierScreen(pScreen, cs);
|
|
|
|
}
|
|
|
|
|
|
|
|
PointerBarrierType = CreateNewResourceType(BarrierFreeBarrier,
|
|
|
|
"XIPointerBarrier");
|
|
|
|
|
|
|
|
return PointerBarrierType;
|
|
|
|
}
|
2014-05-02 13:27:46 -06:00
|
|
|
|
|
|
|
void
|
|
|
|
XIBarrierReset(void)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
for (i = 0; i < screenInfo.numScreens; i++) {
|
|
|
|
ScreenPtr pScreen = screenInfo.screens[i];
|
|
|
|
BarrierScreenPtr cs = GetBarrierScreen(pScreen);
|
|
|
|
free(cs);
|
|
|
|
SetBarrierScreen(pScreen, NULL);
|
|
|
|
}
|
|
|
|
}
|