1100 lines
34 KiB
C
1100 lines
34 KiB
C
/*
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* Copyright © 2006 Nokia Corporation
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* Copyright © 2006-2007 Daniel Stone
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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 <X11/X.h>
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#include <X11/keysym.h>
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#define NEED_EVENTS
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#define NEED_REPLIES
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#include <X11/Xproto.h>
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#include "misc.h"
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#include "resource.h"
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#include "inputstr.h"
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#include "scrnintstr.h"
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#include "cursorstr.h"
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#include "dixstruct.h"
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#include "globals.h"
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#include "dixevents.h"
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#include "mipointer.h"
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#ifdef XKB
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#include <X11/extensions/XKBproto.h>
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#include <xkbsrv.h>
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extern Bool XkbCopyKeymap(XkbDescPtr src, XkbDescPtr dst, Bool sendNotifies);
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#endif
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#ifdef PANORAMIX
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#include "panoramiX.h"
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#include "panoramiXsrv.h"
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#endif
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#include <X11/extensions/XI.h>
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#include <X11/extensions/XIproto.h>
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#include "exglobals.h"
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#include "exevents.h"
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#include "exglobals.h"
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#include "extnsionst.h"
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#include "listdev.h" /* for sizing up DeviceClassesChangedEvent */
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/* Maximum number of valuators, divided by six, rounded up, to get number
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* of events. */
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#define MAX_VALUATOR_EVENTS 6
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/* Number of motion history events to store. */
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#define MOTION_HISTORY_SIZE 256
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/* InputEventList is the container list for all input events generated by the
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* DDX. The DDX is expected to call GetEventList() and then pass the list into
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* Get{Pointer|Keyboard}Events.
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*/
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EventListPtr InputEventList = NULL;
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int InputEventListLen = 0;
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_X_EXPORT int
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GetEventList(EventListPtr* list)
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{
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*list = InputEventList;
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return InputEventListLen;
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}
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/**
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* Pick some arbitrary size for Xi motion history.
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*/
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_X_EXPORT int
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GetMotionHistorySize(void)
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{
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return MOTION_HISTORY_SIZE;
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}
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static void
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set_key_down(DeviceIntPtr pDev, int key_code)
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{
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pDev->key->postdown[key_code >> 3] |= (1 << (key_code & 7));
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}
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static void
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set_key_up(DeviceIntPtr pDev, int key_code)
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{
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pDev->key->postdown[key_code >> 3] &= ~(1 << (key_code & 7));
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}
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static Bool
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key_is_down(DeviceIntPtr pDev, int key_code)
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{
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return !!(pDev->key->postdown[key_code >> 3] & (1 << (key_code & 7)));
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}
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static Bool
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key_autorepeats(DeviceIntPtr pDev, int key_code)
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{
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return !!(pDev->kbdfeed->ctrl.autoRepeats[key_code >> 3] &
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(1 << (key_code & 7)));
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}
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void
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CreateClassesChangedEvent(EventList* event,
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DeviceIntPtr master,
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DeviceIntPtr slave)
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{
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deviceClassesChangedEvent *dcce;
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int len = sizeof(xEvent);
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CARD32 ms = GetTimeInMillis();
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int namelen = 0; /* dummy */
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/* XXX: ok, this is a bit weird. We need to alloc enough size for the
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* event so it can be filled in in POE lateron. Reason being that if
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* we realloc the event in POE we can get SIGABRT when we try to free
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* or realloc the original pointer.
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* We can only do it here as we don't have the EventList in the event
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* processing any more.
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*/
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SizeDeviceInfo(slave, &namelen, &len);
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if (event->evlen < len)
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{
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event->event = realloc(event->event, len);
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if (!event->event)
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FatalError("[dix] Cannot allocate memory for "
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"DeviceClassesChangedEvent.\n");
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event->evlen = len;
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}
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dcce = (deviceClassesChangedEvent*)event->event;
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dcce->type = GenericEvent;
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dcce->extension = IReqCode;
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dcce->evtype = XI_DeviceClassesChangedNotify;
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dcce->time = ms;
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dcce->new_slave = slave->id;
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dcce->length = (len - sizeof(xEvent))/4;
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}
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/**
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* Rescale the coord between the two axis ranges.
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*/
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static int
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rescaleValuatorAxis(int coord, AxisInfoPtr from, AxisInfoPtr to,
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int defmax)
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{
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int fmin = 0, tmin = 0, fmax = defmax, tmax = defmax;
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if(from && from->min_value < from->max_value) {
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fmin = from->min_value;
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fmax = from->max_value;
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}
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if(to && to->min_value < to->max_value) {
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tmin = to->min_value;
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tmax = to->max_value;
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}
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if(fmin == tmin && fmax == tmax)
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return coord;
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if(fmax == fmin) /* avoid division by 0 */
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return 0;
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return roundf(((float)(coord - fmin)) * (tmax - tmin) /
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(fmax - fmin)) + tmin;
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}
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/**
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* Update all coordinates when changing to a different SD
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* to ensure that relative reporting will work as expected
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* without loss of precision.
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*
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* pDev->last.valuators will be in absolute device coordinates after this
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* function.
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*/
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static void
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updateSlaveDeviceCoords(DeviceIntPtr master, DeviceIntPtr pDev)
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{
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ScreenPtr scr = miPointerGetScreen(pDev);
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int i;
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DeviceIntPtr lastSlave;
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/* master->last.valuators[0]/[1] is in screen coords and the actual
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* position of the pointer */
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pDev->last.valuators[0] = master->last.valuators[0];
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pDev->last.valuators[1] = master->last.valuators[1];
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if (!pDev->valuator)
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return;
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/* scale back to device coordinates */
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if(pDev->valuator->numAxes > 0)
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pDev->last.valuators[0] = rescaleValuatorAxis(pDev->last.valuators[0], NULL, pDev->valuator->axes + 0, scr->width);
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if(pDev->valuator->numAxes > 1)
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pDev->last.valuators[1] = rescaleValuatorAxis(pDev->last.valuators[1], NULL, pDev->valuator->axes + 1, scr->height);
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/* calculate the other axis as well based on info from the old
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* slave-device. If the old slave had less axes than this one,
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* last.valuators is reset to 0.
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*/
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if ((lastSlave = master->u.lastSlave) && lastSlave->valuator) {
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for (i = 2; i < pDev->valuator->numAxes; i++) {
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if (i >= lastSlave->valuator->numAxes)
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pDev->last.valuators[i] = 0;
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else
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pDev->last.valuators[i] =
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rescaleValuatorAxis(pDev->last.valuators[i],
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lastSlave->valuator->axes + i,
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pDev->valuator->axes + i, 0);
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}
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}
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}
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/**
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* Allocate the motion history buffer.
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*/
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_X_EXPORT void
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AllocateMotionHistory(DeviceIntPtr pDev)
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{
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int size;
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if (pDev->valuator->motion)
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xfree(pDev->valuator->motion);
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if (pDev->valuator->numMotionEvents < 1)
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return;
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/* An MD must have a motion history size large enough to keep all
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* potential valuators, plus the respective range of the valuators.
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* 3 * INT32 for (min_val, max_val, curr_val))
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*/
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if (pDev->isMaster)
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size = sizeof(INT32) * 3 * MAX_VALUATORS;
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else
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size = sizeof(INT32) * pDev->valuator->numAxes;
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size += sizeof(Time);
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pDev->valuator->motion = xcalloc(pDev->valuator->numMotionEvents, size);
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pDev->valuator->first_motion = 0;
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pDev->valuator->last_motion = 0;
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if (!pDev->valuator->motion)
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ErrorF("[dix] %s: Failed to alloc motion history (%d bytes).\n",
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pDev->name, size * pDev->valuator->numMotionEvents);
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}
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/**
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* Dump the motion history between start and stop into the supplied buffer.
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* Only records the event for a given screen in theory, but in practice, we
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* sort of ignore this.
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*
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* If core is set, we only generate x/y, in INT16, scaled to screen coords.
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*/
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_X_EXPORT int
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GetMotionHistory(DeviceIntPtr pDev, xTimecoord **buff, unsigned long start,
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unsigned long stop, ScreenPtr pScreen, BOOL core)
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{
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char *ibuff = NULL, *obuff;
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int i = 0, ret = 0;
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int j, coord;
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Time current;
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/* The size of a single motion event. */
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int size;
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int dflt;
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AxisInfo from, *to; /* for scaling */
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INT32 *ocbuf, *icbuf; /* pointer to coordinates for copying */
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INT16 *corebuf;
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AxisInfo core_axis = {0};
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if (!pDev->valuator || !pDev->valuator->numMotionEvents)
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return 0;
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if (core && !pScreen)
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return 0;
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if (pDev->isMaster)
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size = (sizeof(INT32) * 3 * MAX_VALUATORS) + sizeof(Time);
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else
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size = (sizeof(INT32) * pDev->valuator->numAxes) + sizeof(Time);
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*buff = xalloc(size * pDev->valuator->numMotionEvents);
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if (!(*buff))
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return 0;
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obuff = (char *)*buff;
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for (i = pDev->valuator->first_motion;
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i != pDev->valuator->last_motion;
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i = (i + 1) % pDev->valuator->numMotionEvents) {
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/* We index the input buffer by which element we're accessing, which
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* is not monotonic, and the output buffer by how many events we've
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* written so far. */
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ibuff = (char *) pDev->valuator->motion + (i * size);
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memcpy(¤t, ibuff, sizeof(Time));
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if (current > stop) {
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return ret;
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}
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else if (current >= start) {
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if (core)
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{
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memcpy(obuff, ibuff, sizeof(Time)); /* copy timestamp */
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icbuf = (INT32*)(ibuff + sizeof(Time));
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corebuf = (INT16*)(obuff + sizeof(Time));
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/* fetch x coordinate + range */
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memcpy(&from.min_value, icbuf++, sizeof(INT32));
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memcpy(&from.max_value, icbuf++, sizeof(INT32));
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memcpy(&coord, icbuf++, sizeof(INT32));
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/* scale to screen coords */
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to = &core_axis;
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to->max_value = pScreen->width;
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coord = rescaleValuatorAxis(coord, &from, to, pScreen->width);
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memcpy(corebuf, &coord, sizeof(INT16));
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corebuf++;
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/* fetch y coordinate + range */
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memcpy(&from.min_value, icbuf++, sizeof(INT32));
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memcpy(&from.max_value, icbuf++, sizeof(INT32));
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memcpy(&coord, icbuf++, sizeof(INT32));
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to->max_value = pScreen->height;
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coord = rescaleValuatorAxis(coord, &from, to, pScreen->height);
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memcpy(corebuf, &coord, sizeof(INT16));
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} else if (pDev->isMaster)
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{
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memcpy(obuff, ibuff, sizeof(Time)); /* copy timestamp */
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ocbuf = (INT32*)(obuff + sizeof(Time));
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icbuf = (INT32*)(ibuff + sizeof(Time));
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for (j = 0; j < MAX_VALUATORS; j++)
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{
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if (j >= pDev->valuator->numAxes)
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break;
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/* fetch min/max/coordinate */
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memcpy(&from.min_value, icbuf++, sizeof(INT32));
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memcpy(&from.max_value, icbuf++, sizeof(INT32));
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memcpy(&coord, icbuf++, sizeof(INT32));
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to = (j < pDev->valuator->numAxes) ? &pDev->valuator->axes[j] : NULL;
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/* x/y scaled to screen if no range is present */
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if (j == 0 && (from.max_value < from.min_value))
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from.max_value = pScreen->width;
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else if (j == 1 && (from.max_value < from.min_value))
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from.max_value = pScreen->height;
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if (j == 0 && (to->max_value < to->min_value))
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dflt = pScreen->width;
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else if (j == 1 && (to->max_value < to->min_value))
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dflt = pScreen->height;
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else
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dflt = 0;
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/* scale from stored range into current range */
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coord = rescaleValuatorAxis(coord, &from, to, 0);
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memcpy(ocbuf, &coord, sizeof(INT32));
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ocbuf++;
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}
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} else
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memcpy(obuff, ibuff, size);
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/* don't advance by size here. size may be different to the
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* actually written size if the MD has less valuators than MAX */
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if (core)
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obuff += sizeof(INT32) + sizeof(Time);
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else
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obuff += (sizeof(INT32) * pDev->valuator->numAxes) + sizeof(Time);
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ret++;
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}
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}
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return ret;
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}
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/**
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* Update the motion history for a specific device, with the list of
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* valuators.
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*
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* Layout of the history buffer:
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* for SDs: [time] [val0] [val1] ... [valn]
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* for MDs: [time] [min_val0] [max_val0] [val0] [min_val1] ... [valn]
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*
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* For events that have some valuators unset (first_valuator > 0):
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* min_val == max_val == val == 0.
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*/
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static void
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updateMotionHistory(DeviceIntPtr pDev, CARD32 ms, int first_valuator,
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int num_valuators, int *valuators)
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{
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char *buff = (char *) pDev->valuator->motion;
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ValuatorClassPtr v;
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int i;
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if (!pDev->valuator->numMotionEvents)
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return;
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v = pDev->valuator;
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if (pDev->isMaster)
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{
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buff += ((sizeof(INT32) * 3 * MAX_VALUATORS) + sizeof(CARD32)) *
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v->last_motion;
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memcpy(buff, &ms, sizeof(Time));
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buff += sizeof(Time);
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memset(buff, 0, sizeof(INT32) * 3 * MAX_VALUATORS);
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buff += 3 * sizeof(INT32) * first_valuator;
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for (i = first_valuator; i < first_valuator + num_valuators; i++)
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{
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if (i >= v->numAxes)
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break;
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memcpy(buff, &v->axes[i].min_value, sizeof(INT32));
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buff += sizeof(INT32);
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memcpy(buff, &v->axes[i].max_value, sizeof(INT32));
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buff += sizeof(INT32);
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memcpy(buff, &valuators[i - first_valuator], sizeof(INT32));
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buff += sizeof(INT32);
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}
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} else
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{
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buff += ((sizeof(INT32) * pDev->valuator->numAxes) + sizeof(CARD32)) *
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pDev->valuator->last_motion;
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memcpy(buff, &ms, sizeof(Time));
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buff += sizeof(Time);
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memset(buff, 0, sizeof(INT32) * pDev->valuator->numAxes);
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buff += sizeof(INT32) * first_valuator;
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memcpy(buff, valuators, sizeof(INT32) * num_valuators);
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}
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pDev->valuator->last_motion = (pDev->valuator->last_motion + 1) %
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pDev->valuator->numMotionEvents;
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/* If we're wrapping around, just keep the circular buffer going. */
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if (pDev->valuator->first_motion == pDev->valuator->last_motion)
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pDev->valuator->first_motion = (pDev->valuator->first_motion + 1) %
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pDev->valuator->numMotionEvents;
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return;
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}
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/**
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* Returns the maximum number of events GetKeyboardEvents,
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* GetKeyboardValuatorEvents, and GetPointerEvents will ever return.
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*
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* Should be used in DIX as:
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* xEvent *events = xcalloc(sizeof(xEvent), GetMaximumEventsNum());
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*
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* This MUST be absolutely constant, from init until exit.
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*/
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_X_EXPORT int
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GetMaximumEventsNum(void) {
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/* One base event -- device, plus valuator events.
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* Multiply by two if we're doing non-XKB key repeats. */
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int ret = 1 + MAX_VALUATOR_EVENTS;
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#ifdef XKB
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if (noXkbExtension)
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#endif
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ret *= 2;
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return ret;
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}
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/**
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* Clip an axis to its bounds, which are declared in the call to
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* InitValuatorAxisClassStruct.
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*/
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static void
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clipAxis(DeviceIntPtr pDev, int axisNum, int *val)
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{
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AxisInfoPtr axis = pDev->valuator->axes + axisNum;
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/* InitValuatoraAxisStruct ensures that (min < max). */
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/* If a value range is defined, clip. If not, do nothing */
|
|
if (axis->max_value <= axis->min_value)
|
|
return;
|
|
|
|
if (*val < axis->min_value)
|
|
*val = axis->min_value;
|
|
if (*val > axis->max_value)
|
|
*val = axis->max_value;
|
|
}
|
|
|
|
/**
|
|
* Clip every axis in the list of valuators to its bounds.
|
|
*/
|
|
static void
|
|
clipValuators(DeviceIntPtr pDev, int first_valuator, int num_valuators,
|
|
int *valuators)
|
|
{
|
|
AxisInfoPtr axes = pDev->valuator->axes + first_valuator;
|
|
int i;
|
|
|
|
for (i = 0; i < num_valuators; i++, axes++)
|
|
clipAxis(pDev, i + first_valuator, &(valuators[i]));
|
|
}
|
|
|
|
|
|
/**
|
|
* Fills events with valuator events for pDev, as given by the other
|
|
* parameters.
|
|
*/
|
|
static EventList *
|
|
getValuatorEvents(EventList *events, DeviceIntPtr pDev,
|
|
int first_valuator, int num_valuators, int *valuators) {
|
|
deviceValuator *xv;
|
|
int i;
|
|
|
|
for (i = 0; i < num_valuators; i += 6, events++) {
|
|
xv = (deviceValuator*)events->event;
|
|
xv->type = DeviceValuator;
|
|
xv->first_valuator = first_valuator + i;
|
|
xv->num_valuators = ((num_valuators - i) > 6) ? 6 : (num_valuators - i);
|
|
xv->deviceid = pDev->id;
|
|
switch (num_valuators - i) {
|
|
case 6:
|
|
xv->valuator5 = valuators[i + 5];
|
|
case 5:
|
|
xv->valuator4 = valuators[i + 4];
|
|
case 4:
|
|
xv->valuator3 = valuators[i + 3];
|
|
case 3:
|
|
xv->valuator2 = valuators[i + 2];
|
|
case 2:
|
|
xv->valuator1 = valuators[i + 1];
|
|
case 1:
|
|
xv->valuator0 = valuators[i + 0];
|
|
}
|
|
|
|
if (i + 6 < num_valuators)
|
|
xv->deviceid |= MORE_EVENTS;
|
|
}
|
|
|
|
return events;
|
|
}
|
|
|
|
|
|
/**
|
|
* Convenience wrapper around GetKeyboardValuatorEvents, that takes no
|
|
* valuators.
|
|
*/
|
|
_X_EXPORT int
|
|
GetKeyboardEvents(EventList *events, DeviceIntPtr pDev, int type, int key_code) {
|
|
return GetKeyboardValuatorEvents(events, pDev, type, key_code, 0, 0, NULL);
|
|
}
|
|
|
|
|
|
/**
|
|
* Returns a set of keyboard events for KeyPress/KeyRelease, optionally
|
|
* also with valuator events. Handles Xi and XKB.
|
|
*
|
|
* DOES NOT GENERATE CORE EVENTS! Core events are created when processing the
|
|
* event (ProcessOtherEvent).
|
|
*
|
|
* events is not NULL-terminated; the return value is the number of events.
|
|
* The DDX is responsible for allocating the event structure in the first
|
|
* place via GetMaximumEventsNum(), and for freeing it.
|
|
*
|
|
* This function does not change the core keymap to that of the device;
|
|
* that is done by SwitchCoreKeyboard, which is called from
|
|
* mieqProcessInputEvents. If replacing that function, take care to call
|
|
* SetCoreKeyboard before processInputProc, so keymaps are altered to suit.
|
|
*
|
|
* Note that this function recurses! If called for non-XKB, a repeating
|
|
* key press will trigger a matching KeyRelease, as well as the
|
|
* KeyPresses.
|
|
*/
|
|
_X_EXPORT int
|
|
GetKeyboardValuatorEvents(EventList *events, DeviceIntPtr pDev, int type,
|
|
int key_code, int first_valuator,
|
|
int num_valuators, int *valuators) {
|
|
int numEvents = 0;
|
|
CARD32 ms = 0;
|
|
KeySym *map;
|
|
KeySym sym;
|
|
deviceKeyButtonPointer *kbp = NULL;
|
|
DeviceIntPtr master;
|
|
|
|
if (!events)
|
|
return 0;
|
|
|
|
/* DO NOT WANT */
|
|
if (type != KeyPress && type != KeyRelease)
|
|
return 0;
|
|
|
|
if (!pDev->key || !pDev->focus || !pDev->kbdfeed)
|
|
return 0;
|
|
|
|
numEvents = 1;
|
|
|
|
if (key_code < 8 || key_code > 255)
|
|
return 0;
|
|
|
|
map = pDev->key->curKeySyms.map;
|
|
sym = map[(key_code - pDev->key->curKeySyms.minKeyCode)
|
|
* pDev->key->curKeySyms.mapWidth];
|
|
|
|
master = pDev->u.master;
|
|
if (master && master->u.lastSlave != pDev)
|
|
{
|
|
CreateClassesChangedEvent(events, master, pDev);
|
|
updateSlaveDeviceCoords(master, pDev);
|
|
master->u.lastSlave = pDev;
|
|
master->last.numValuators = pDev->last.numValuators;
|
|
numEvents++;
|
|
events++;
|
|
}
|
|
|
|
if (num_valuators) {
|
|
if ((num_valuators / 6) + 1 > MAX_VALUATOR_EVENTS)
|
|
num_valuators = MAX_VALUATOR_EVENTS;
|
|
numEvents += (num_valuators / 6) + 1;
|
|
}
|
|
|
|
#ifdef XKB
|
|
if (noXkbExtension)
|
|
#endif
|
|
{
|
|
switch (sym) {
|
|
case XK_Num_Lock:
|
|
case XK_Caps_Lock:
|
|
case XK_Scroll_Lock:
|
|
case XK_Shift_Lock:
|
|
if (type == KeyRelease)
|
|
return 0;
|
|
else if (type == KeyPress && key_is_down(pDev, key_code))
|
|
type = KeyRelease;
|
|
}
|
|
}
|
|
|
|
/* Handle core repeating, via press/release/press/release.
|
|
* FIXME: In theory, if you're repeating with two keyboards in non-XKB,
|
|
* you could get unbalanced events here. */
|
|
if (type == KeyPress && key_is_down(pDev, key_code)) {
|
|
/* If autorepeating is disabled either globally or just for that key,
|
|
* or we have a modifier, don't generate a repeat event. */
|
|
if (!pDev->kbdfeed->ctrl.autoRepeat ||
|
|
!key_autorepeats(pDev, key_code) ||
|
|
pDev->key->modifierMap[key_code])
|
|
return 0;
|
|
|
|
#ifdef XKB
|
|
if (noXkbExtension)
|
|
#endif
|
|
{
|
|
numEvents += GetKeyboardValuatorEvents(events, pDev,
|
|
KeyRelease, key_code,
|
|
first_valuator, num_valuators,
|
|
valuators);
|
|
events += numEvents;
|
|
}
|
|
}
|
|
|
|
ms = GetTimeInMillis();
|
|
|
|
kbp = (deviceKeyButtonPointer *) events->event;
|
|
kbp->time = ms;
|
|
kbp->deviceid = pDev->id;
|
|
kbp->detail = key_code;
|
|
if (type == KeyPress) {
|
|
kbp->type = DeviceKeyPress;
|
|
set_key_down(pDev, key_code);
|
|
}
|
|
else if (type == KeyRelease) {
|
|
kbp->type = DeviceKeyRelease;
|
|
set_key_up(pDev, key_code);
|
|
}
|
|
|
|
events++;
|
|
if (num_valuators) {
|
|
kbp->deviceid |= MORE_EVENTS;
|
|
clipValuators(pDev, first_valuator, num_valuators, valuators);
|
|
events = getValuatorEvents(events, pDev, first_valuator,
|
|
num_valuators, valuators);
|
|
}
|
|
|
|
return numEvents;
|
|
}
|
|
|
|
/**
|
|
* Initialize an event list and fill with 32 byte sized events.
|
|
* This event list is to be passed into GetPointerEvents() and
|
|
* GetKeyboardEvents().
|
|
*
|
|
* @param num_events Number of elements in list.
|
|
*/
|
|
EventListPtr
|
|
InitEventList(int num_events)
|
|
{
|
|
EventListPtr events;
|
|
int i;
|
|
|
|
events = (EventListPtr)xcalloc(num_events, sizeof(EventList));
|
|
if (!events)
|
|
return NULL;
|
|
|
|
for (i = 0; i < num_events; i++)
|
|
{
|
|
events[i].evlen = sizeof(xEvent);
|
|
events[i].event = xcalloc(1, sizeof(xEvent));
|
|
if (!events[i].event)
|
|
{
|
|
/* rollback */
|
|
while(i--)
|
|
xfree(events[i].event);
|
|
xfree(events);
|
|
events = NULL;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return events;
|
|
}
|
|
|
|
/**
|
|
* Allocs min_size memory for each event in the list.
|
|
*/
|
|
_X_EXPORT void
|
|
SetMinimumEventSize(EventListPtr list, int num_events, int min_size)
|
|
{
|
|
if (!list)
|
|
return;
|
|
|
|
while(num_events--)
|
|
{
|
|
if (list[num_events].evlen < min_size)
|
|
{
|
|
list[num_events].evlen = min_size;
|
|
list[num_events].event = realloc(list[num_events].event, min_size);
|
|
if (!list[num_events].event)
|
|
{
|
|
FatalError("[dix] Failed to set event list's "
|
|
"min_size to %d.\n", min_size);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Free an event list.
|
|
*
|
|
* @param list The list to be freed.
|
|
* @param num_events Number of elements in list.
|
|
*/
|
|
_X_EXPORT void
|
|
FreeEventList(EventListPtr list, int num_events)
|
|
{
|
|
if (!list)
|
|
return;
|
|
while(num_events--)
|
|
xfree(list[num_events].event);
|
|
xfree(list);
|
|
}
|
|
|
|
/**
|
|
* Generate a series of xEvents (filled into the EventList) representing
|
|
* pointer motion, or button presses. Xi and XKB-aware.
|
|
*
|
|
* DOES NOT GENERATE CORE EVENTS! Core events are created when processing the
|
|
* event (ProcessOtherEvent).
|
|
*
|
|
* events is not NULL-terminated; the return value is the number of events.
|
|
* The DDX is responsible for allocating the event structure in the first
|
|
* place via InitEventList() and GetMaximumEventsNum(), and for freeing it.
|
|
*
|
|
* In the generated events rootX/Y will be in absolute screen coords and
|
|
* the valuator information in the absolute or relative device coords.
|
|
*
|
|
* last.valuators[x] of the device is always in absolute device coords.
|
|
* last.valuators[x] of the master device is in absolute screen coords.
|
|
*
|
|
* master->last.valuators[x] for x > 2 is undefined.
|
|
*/
|
|
_X_EXPORT int
|
|
GetPointerEvents(EventList *events, DeviceIntPtr pDev, int type, int buttons,
|
|
int flags, int first_valuator, int num_valuators,
|
|
int *valuators) {
|
|
int num_events = 1;
|
|
CARD32 ms;
|
|
deviceKeyButtonPointer *kbp = NULL;
|
|
DeviceIntPtr master;
|
|
int x, y, /* switches between device and screen coords */
|
|
cx, cy; /* only screen coordinates */
|
|
ScreenPtr scr = miPointerGetScreen(pDev);
|
|
int *v0 = NULL, *v1 = NULL;
|
|
int i;
|
|
|
|
ms = GetTimeInMillis(); /* before pointer update to help precision */
|
|
|
|
/* Sanity checks. */
|
|
if (!scr) /* can happen during server shutdown */
|
|
return 0;
|
|
if (type != MotionNotify && type != ButtonPress && type != ButtonRelease)
|
|
return 0;
|
|
if (type != MotionNotify && !pDev->button)
|
|
return 0;
|
|
/* FIXME: I guess it should, in theory, be possible to post button events
|
|
* from devices without valuators. */
|
|
if (!pDev->valuator)
|
|
return 0;
|
|
if (type == MotionNotify && num_valuators <= 0)
|
|
return 0;
|
|
|
|
/* Do we need to send a DeviceValuator event? */
|
|
if (num_valuators) {
|
|
if ((((num_valuators - 1) / 6) + 1) > MAX_VALUATOR_EVENTS)
|
|
num_valuators = MAX_VALUATOR_EVENTS * 6;
|
|
num_events += ((num_valuators - 1) / 6) + 1;
|
|
}
|
|
|
|
/* You fail. */
|
|
if (first_valuator < 0 ||
|
|
(num_valuators + first_valuator) > pDev->valuator->numAxes)
|
|
return 0;
|
|
|
|
master = pDev->u.master;
|
|
if (master && master->u.lastSlave != pDev)
|
|
{
|
|
CreateClassesChangedEvent(events, master, pDev);
|
|
updateSlaveDeviceCoords(master, pDev);
|
|
master->u.lastSlave = pDev;
|
|
master->last.numValuators = pDev->last.numValuators;
|
|
num_events++;
|
|
events++;
|
|
}
|
|
|
|
/* Fetch pointers into the valuator array for more easy to read code */
|
|
if (num_valuators >= 1 && first_valuator == 0)
|
|
v0 = valuators + 0;
|
|
if (first_valuator <= 1 && num_valuators >= (2 - first_valuator))
|
|
v1 = valuators + 1 - first_valuator;
|
|
|
|
/* Set x and y based on whether this is absolute or relative, and
|
|
* accelerate if we need to. */
|
|
x = pDev->last.valuators[0];
|
|
y = pDev->last.valuators[1];
|
|
if (flags & POINTER_ABSOLUTE) {
|
|
if(v0) x = *v0;
|
|
if(v1) y = *v1;
|
|
|
|
/* Clip both x and y to the defined limits (usually co-ord space limit). */
|
|
clipAxis(pDev, 0, &x);
|
|
clipAxis(pDev, 1, &y);
|
|
|
|
i = (first_valuator > 2) ? 0 : 2;
|
|
for (; i < num_valuators; i++)
|
|
{
|
|
pDev->last.valuators[i + first_valuator] = valuators[i];
|
|
clipAxis(pDev, i, &pDev->last.valuators[i + first_valuator]);
|
|
}
|
|
}
|
|
else {
|
|
if (flags & POINTER_ACCELERATE &&
|
|
pDev->valuator->accelScheme.AccelSchemeProc){
|
|
pDev->valuator->accelScheme.AccelSchemeProc(
|
|
pDev, first_valuator, num_valuators, valuators, ms);
|
|
}
|
|
|
|
if(v0) x += *v0;
|
|
if(v1) y += *v1;
|
|
|
|
/* if attached, clip both x and y to the defined limits (usually
|
|
* co-ord space limit). If it is attached, we need x/y to go over the
|
|
* limits to be able to change screens. */
|
|
if(master) {
|
|
clipAxis(pDev, 0, &x);
|
|
clipAxis(pDev, 1, &y);
|
|
}
|
|
|
|
/* calc other axes, clip, drop back into valuators */
|
|
i = (first_valuator > 2) ? 0 : 2;
|
|
for (; i < num_valuators; i++)
|
|
{
|
|
pDev->last.valuators[i + first_valuator] += valuators[i];
|
|
clipAxis(pDev, i, &pDev->last.valuators[i + first_valuator]);
|
|
valuators[i] = pDev->last.valuators[i + first_valuator];
|
|
}
|
|
}
|
|
|
|
/* scale x&y to screen */
|
|
pDev->last.valuators[0] = cx = rescaleValuatorAxis(x, pDev->valuator->axes + 0,
|
|
NULL, scr->width);
|
|
pDev->last.valuators[1] = cy = rescaleValuatorAxis(y, pDev->valuator->axes + 1,
|
|
NULL, scr->height);
|
|
|
|
/* This takes care of crossing screens for us, as well as clipping
|
|
* to the current screen. Right now, we only have one history buffer,
|
|
* so we don't set this for both the device and core.*/
|
|
miPointerSetPosition(pDev, &pDev->last.valuators[0], &pDev->last.valuators[1]);
|
|
|
|
if (master) {
|
|
master->last.valuators[0] = pDev->last.valuators[0];
|
|
master->last.valuators[1] = pDev->last.valuators[1];
|
|
}
|
|
|
|
/* Crossed screen? Scale back to device coordiantes */
|
|
if(cx != pDev->last.valuators[0])
|
|
{
|
|
scr = miPointerGetScreen(pDev);
|
|
x = rescaleValuatorAxis(pDev->last.valuators[0], NULL,
|
|
pDev->valuator->axes + 0, scr->width);
|
|
cx = pDev->last.valuators[0];
|
|
}
|
|
if(cy != pDev->last.valuators[1])
|
|
{
|
|
scr = miPointerGetScreen(pDev);
|
|
cy = pDev->last.valuators[1];
|
|
y = rescaleValuatorAxis(pDev->last.valuators[1], NULL,
|
|
pDev->valuator->axes + 1, scr->height);
|
|
}
|
|
|
|
|
|
updateMotionHistory(pDev, ms, first_valuator, num_valuators,
|
|
&pDev->last.valuators[first_valuator]);
|
|
if (master)
|
|
updateMotionHistory(master, ms, first_valuator, num_valuators,
|
|
&pDev->last.valuators[first_valuator]);
|
|
|
|
/* Update the valuators with the true value sent to the client*/
|
|
if(v0) *v0 = x;
|
|
if(v1) *v1 = y;
|
|
|
|
/* dropy x/y (device coordinates) back into valuators for next event */
|
|
pDev->last.valuators[0] = x;
|
|
pDev->last.valuators[1] = y;
|
|
|
|
kbp = (deviceKeyButtonPointer *) events->event;
|
|
kbp->time = ms;
|
|
kbp->deviceid = pDev->id;
|
|
|
|
if (type == MotionNotify) {
|
|
kbp->type = DeviceMotionNotify;
|
|
}
|
|
else {
|
|
if (type == ButtonPress)
|
|
kbp->type = DeviceButtonPress;
|
|
else if (type == ButtonRelease)
|
|
kbp->type = DeviceButtonRelease;
|
|
kbp->detail = buttons;
|
|
}
|
|
|
|
kbp->root_x = cx; /* root_x/y always in screen coords */
|
|
kbp->root_y = cy;
|
|
|
|
events++;
|
|
if (num_valuators) {
|
|
kbp->deviceid |= MORE_EVENTS;
|
|
if (flags & POINTER_ABSOLUTE)
|
|
clipValuators(pDev, first_valuator, num_valuators, valuators);
|
|
events = getValuatorEvents(events, pDev, first_valuator,
|
|
num_valuators, valuators);
|
|
}
|
|
|
|
return num_events;
|
|
}
|
|
|
|
|
|
/**
|
|
* Post ProximityIn/ProximityOut events, accompanied by valuators.
|
|
*
|
|
* events is not NULL-terminated; the return value is the number of events.
|
|
* The DDX is responsible for allocating the event structure in the first
|
|
* place via GetMaximumEventsNum(), and for freeing it.
|
|
*/
|
|
_X_EXPORT int
|
|
GetProximityEvents(EventList *events, DeviceIntPtr pDev, int type,
|
|
int first_valuator, int num_valuators, int *valuators)
|
|
{
|
|
int num_events = 1;
|
|
deviceKeyButtonPointer *kbp;
|
|
DeviceIntPtr master;
|
|
|
|
/* Sanity checks. */
|
|
if (type != ProximityIn && type != ProximityOut)
|
|
return 0;
|
|
if (!pDev->valuator)
|
|
return 0;
|
|
/* Do we need to send a DeviceValuator event? */
|
|
if ((pDev->valuator->mode & 1) == Relative)
|
|
num_valuators = 0;
|
|
|
|
if (num_valuators) {
|
|
if ((((num_valuators - 1) / 6) + 1) > MAX_VALUATOR_EVENTS)
|
|
num_valuators = MAX_VALUATOR_EVENTS * 6;
|
|
num_events += ((num_valuators - 1) / 6) + 1;
|
|
}
|
|
|
|
/* You fail. */
|
|
if (first_valuator < 0 ||
|
|
(num_valuators + first_valuator) > pDev->valuator->numAxes)
|
|
return 0;
|
|
|
|
master = pDev->u.master;
|
|
if (master && master->u.lastSlave != pDev)
|
|
{
|
|
CreateClassesChangedEvent(events, master, pDev);
|
|
updateSlaveDeviceCoords(master, pDev);
|
|
master->u.lastSlave = pDev;
|
|
master->last.numValuators = pDev->last.numValuators;
|
|
num_events++;
|
|
events++;
|
|
}
|
|
|
|
kbp = (deviceKeyButtonPointer *) events->event;
|
|
kbp->type = type;
|
|
kbp->deviceid = pDev->id;
|
|
kbp->detail = 0;
|
|
kbp->time = GetTimeInMillis();
|
|
|
|
if (num_valuators) {
|
|
kbp->deviceid |= MORE_EVENTS;
|
|
events++;
|
|
clipValuators(pDev, first_valuator, num_valuators, valuators);
|
|
events = getValuatorEvents(events, pDev, first_valuator,
|
|
num_valuators, valuators);
|
|
}
|
|
|
|
return num_events;
|
|
}
|
|
|
|
/**
|
|
* Note that pDev was the last function to send a core pointer event.
|
|
* Currently a no-op.
|
|
*
|
|
* Call this just before processInputProc.
|
|
*/
|
|
_X_EXPORT void
|
|
SwitchCorePointer(DeviceIntPtr pDev)
|
|
{
|
|
if (pDev != dixLookupPrivate(&inputInfo.pointer->devPrivates,
|
|
CoreDevicePrivateKey))
|
|
dixSetPrivate(&inputInfo.pointer->devPrivates,
|
|
CoreDevicePrivateKey, pDev);
|
|
}
|
|
|
|
|
|
/**
|
|
* Synthesize a single motion event for the core pointer.
|
|
*
|
|
* Used in cursor functions, e.g. when cursor confinement changes, and we need
|
|
* to shift the pointer to get it inside the new bounds.
|
|
*/
|
|
void
|
|
PostSyntheticMotion(DeviceIntPtr pDev,
|
|
int x,
|
|
int y,
|
|
int screen,
|
|
unsigned long time)
|
|
{
|
|
xEvent xE;
|
|
|
|
#ifdef PANORAMIX
|
|
/* Translate back to the sprite screen since processInputProc
|
|
will translate from sprite screen to screen 0 upon reentry
|
|
to the DIX layer. */
|
|
if (!noPanoramiXExtension) {
|
|
x += panoramiXdataPtr[0].x - panoramiXdataPtr[screen].x;
|
|
y += panoramiXdataPtr[0].y - panoramiXdataPtr[screen].y;
|
|
}
|
|
#endif
|
|
|
|
memset(&xE, 0, sizeof(xEvent));
|
|
xE.u.u.type = MotionNotify;
|
|
xE.u.keyButtonPointer.rootX = x;
|
|
xE.u.keyButtonPointer.rootY = y;
|
|
xE.u.keyButtonPointer.time = time;
|
|
|
|
(*pDev->public.processInputProc)(&xE, pDev, 1);
|
|
}
|