diff options
Diffstat (limited to 'xorg-server/dix/getevents.c')
| -rw-r--r-- | xorg-server/dix/getevents.c | 2751 |
1 files changed, 1386 insertions, 1365 deletions
diff --git a/xorg-server/dix/getevents.c b/xorg-server/dix/getevents.c index c935c971c..56b3d6128 100644 --- a/xorg-server/dix/getevents.c +++ b/xorg-server/dix/getevents.c @@ -1,1365 +1,1386 @@ -/* - * Copyright © 2006 Nokia Corporation - * Copyright © 2006-2007 Daniel Stone - * Copyright © 2008 Red Hat, Inc. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice (including the next - * paragraph) shall be included in all copies or substantial portions of the - * Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER - * DEALINGS IN THE SOFTWARE. - * - * Authors: Daniel Stone <daniel@fooishbar.org> - * Peter Hutterer <peter.hutterer@who-t.net> - */ - -#ifdef HAVE_DIX_CONFIG_H -#include <dix-config.h> -#endif - -#include <X11/X.h> -#include <X11/keysym.h> -#include <X11/Xproto.h> -#include <math.h> - -#include "misc.h" -#include "resource.h" -#include "inputstr.h" -#include "scrnintstr.h" -#include "cursorstr.h" -#include "dixstruct.h" -#include "globals.h" -#include "dixevents.h" -#include "mipointer.h" -#include "eventstr.h" -#include "eventconvert.h" -#include "inpututils.h" -#include "mi.h" - -#include <X11/extensions/XKBproto.h> -#include "xkbsrv.h" - -#ifdef PANORAMIX -#include "panoramiX.h" -#include "panoramiXsrv.h" -#endif - -#include <X11/extensions/XI.h> -#include <X11/extensions/XIproto.h> -#include <pixman.h> -#include "exglobals.h" -#include "exevents.h" -#include "extnsionst.h" -#include "listdev.h" /* for sizing up DeviceClassesChangedEvent */ - -/* Number of motion history events to store. */ -#define MOTION_HISTORY_SIZE 256 - -/** - * InputEventList is the storage for input events generated by - * QueuePointerEvents, QueueKeyboardEvents, and QueueProximityEvents. - * This list is allocated on startup by the DIX. - */ -InternalEvent* InputEventList = NULL; - -/** - * Pick some arbitrary size for Xi motion history. - */ -int -GetMotionHistorySize(void) -{ - return MOTION_HISTORY_SIZE; -} - -void -set_button_down(DeviceIntPtr pDev, int button, int type) -{ - if (type == BUTTON_PROCESSED) - SetBit(pDev->button->down, button); - else - SetBit(pDev->button->postdown, button); -} - -void -set_button_up(DeviceIntPtr pDev, int button, int type) -{ - if (type == BUTTON_PROCESSED) - ClearBit(pDev->button->down, button); - else - ClearBit(pDev->button->postdown, button); -} - -Bool -button_is_down(DeviceIntPtr pDev, int button, int type) -{ - Bool ret = FALSE; - - if (type & BUTTON_PROCESSED) - ret = ret || BitIsOn(pDev->button->down, button); - if (type & BUTTON_POSTED) - ret = ret || BitIsOn(pDev->button->postdown, button); - - return ret; -} - -void -set_key_down(DeviceIntPtr pDev, int key_code, int type) -{ - if (type == KEY_PROCESSED) - SetBit(pDev->key->down, key_code); - else - SetBit(pDev->key->postdown, key_code); -} - -void -set_key_up(DeviceIntPtr pDev, int key_code, int type) -{ - if (type == KEY_PROCESSED) - ClearBit(pDev->key->down, key_code); - else - ClearBit(pDev->key->postdown, key_code); -} - -Bool -key_is_down(DeviceIntPtr pDev, int key_code, int type) -{ - Bool ret = FALSE; - - if (type & KEY_PROCESSED) - ret = ret || BitIsOn(pDev->key->down, key_code); - if (type & KEY_POSTED) - ret = ret || BitIsOn(pDev->key->postdown, key_code); - - return ret; -} - -static Bool -key_autorepeats(DeviceIntPtr pDev, int key_code) -{ - return !!(pDev->kbdfeed->ctrl.autoRepeats[key_code >> 3] & - (1 << (key_code & 7))); -} - -static void -init_event(DeviceIntPtr dev, DeviceEvent* event, Time ms) -{ - memset(event, 0, sizeof(DeviceEvent)); - event->header = ET_Internal; - event->length = sizeof(DeviceEvent); - event->time = ms; - event->deviceid = dev->id; - event->sourceid = dev->id; -} - -static void -init_raw(DeviceIntPtr dev, RawDeviceEvent *event, Time ms, int type, int detail) -{ - memset(event, 0, sizeof(RawDeviceEvent)); - event->header = ET_Internal; - event->length = sizeof(RawDeviceEvent); - event->type = ET_RawKeyPress - ET_KeyPress + type; - event->time = ms; - event->deviceid = dev->id; - event->sourceid = dev->id; - event->detail.button = detail; -} - -static void -set_raw_valuators(RawDeviceEvent *event, ValuatorMask *mask, int32_t* data) -{ - int i; - - for (i = 0; i < valuator_mask_size(mask); i++) - { - if (valuator_mask_isset(mask, i)) - { - SetBit(event->valuators.mask, i); - data[i] = valuator_mask_get(mask, i); - } - } -} - - -static void -set_valuators(DeviceIntPtr dev, DeviceEvent* event, ValuatorMask *mask) -{ - int i; - - /* Set the data to the previous value for unset absolute axes. The values - * may be used when sent as part of an XI 1.x valuator event. */ - for (i = 0; i < valuator_mask_size(mask); i++) - { - if (valuator_mask_isset(mask, i)) - { - SetBit(event->valuators.mask, i); - if (valuator_get_mode(dev, i) == Absolute) - SetBit(event->valuators.mode, i); - event->valuators.data[i] = valuator_mask_get(mask, i); - event->valuators.data_frac[i] = - dev->last.remainder[i] * (1 << 16) * (1 << 16); - } - else if (valuator_get_mode(dev, i) == Absolute) - event->valuators.data[i] = dev->valuator->axisVal[i]; - } -} - -void -CreateClassesChangedEvent(InternalEvent* event, - DeviceIntPtr master, - DeviceIntPtr slave, - int type) -{ - int i; - DeviceChangedEvent *dce; - CARD32 ms = GetTimeInMillis(); - - dce = &event->changed_event; - memset(dce, 0, sizeof(DeviceChangedEvent)); - dce->deviceid = slave->id; - dce->masterid = master->id; - dce->header = ET_Internal; - dce->length = sizeof(DeviceChangedEvent); - dce->type = ET_DeviceChanged; - dce->time = ms; - dce->flags = type; - dce->flags |= DEVCHANGE_SLAVE_SWITCH; - dce->sourceid = slave->id; - - if (slave->button) - { - dce->buttons.num_buttons = slave->button->numButtons; - for (i = 0; i < dce->buttons.num_buttons; i++) - dce->buttons.names[i] = slave->button->labels[i]; - } - if (slave->valuator) - { - dce->num_valuators = slave->valuator->numAxes; - for (i = 0; i < dce->num_valuators; i++) - { - dce->valuators[i].min = slave->valuator->axes[i].min_value; - dce->valuators[i].max = slave->valuator->axes[i].max_value; - dce->valuators[i].resolution = slave->valuator->axes[i].resolution; - dce->valuators[i].mode = slave->valuator->axes[i].mode; - dce->valuators[i].name = slave->valuator->axes[i].label; - } - } - if (slave->key) - { - dce->keys.min_keycode = slave->key->xkbInfo->desc->min_key_code; - dce->keys.max_keycode = slave->key->xkbInfo->desc->max_key_code; - } -} - -/** - * Rescale the coord between the two axis ranges. - */ -static int -rescaleValuatorAxis(int coord, float remainder, float *remainder_return, AxisInfoPtr from, AxisInfoPtr to, - int defmax) -{ - int fmin = 0, tmin = 0, fmax = defmax, tmax = defmax, coord_return; - float value; - - if(from && from->min_value < from->max_value) { - fmin = from->min_value; - fmax = from->max_value; - } - if(to && to->min_value < to->max_value) { - tmin = to->min_value; - tmax = to->max_value; - } - - if(fmin == tmin && fmax == tmax) { - if (remainder_return) - *remainder_return = remainder; - return coord; - } - - if(fmax == fmin) { /* avoid division by 0 */ - if (remainder_return) - *remainder_return = 0.0; - return 0; - } - - value = (coord + remainder - fmin) * (tmax - tmin) / (fmax - fmin) + tmin; - coord_return = lroundf(value); - if (remainder_return) - *remainder_return = value - coord_return; - return coord_return; -} - -/** - * Update all coordinates when changing to a different SD - * to ensure that relative reporting will work as expected - * without loss of precision. - * - * pDev->last.valuators will be in absolute device coordinates after this - * function. - */ -static void -updateSlaveDeviceCoords(DeviceIntPtr master, DeviceIntPtr pDev) -{ - ScreenPtr scr = miPointerGetScreen(pDev); - int i; - DeviceIntPtr lastSlave; - - /* master->last.valuators[0]/[1] is in screen coords and the actual - * position of the pointer */ - pDev->last.valuators[0] = master->last.valuators[0]; - pDev->last.valuators[1] = master->last.valuators[1]; - - if (!pDev->valuator) - return; - - /* scale back to device coordinates */ - if(pDev->valuator->numAxes > 0) - pDev->last.valuators[0] = rescaleValuatorAxis(pDev->last.valuators[0], pDev->last.remainder[0], - &pDev->last.remainder[0], NULL, pDev->valuator->axes + 0, scr->width); - if(pDev->valuator->numAxes > 1) - pDev->last.valuators[1] = rescaleValuatorAxis(pDev->last.valuators[1], pDev->last.remainder[1], - &pDev->last.remainder[1], NULL, pDev->valuator->axes + 1, scr->height); - - /* calculate the other axis as well based on info from the old - * slave-device. If the old slave had less axes than this one, - * last.valuators is reset to 0. - */ - if ((lastSlave = master->last.slave) && lastSlave->valuator) { - for (i = 2; i < pDev->valuator->numAxes; i++) { - if (i >= lastSlave->valuator->numAxes) - pDev->last.valuators[i] = 0; - else - pDev->last.valuators[i] = - rescaleValuatorAxis(pDev->last.valuators[i], - pDev->last.remainder[i], - &pDev->last.remainder[i], - lastSlave->valuator->axes + i, - pDev->valuator->axes + i, 0); - } - } - -} - -/** - * Allocate the motion history buffer. - */ -void -AllocateMotionHistory(DeviceIntPtr pDev) -{ - int size; - free(pDev->valuator->motion); - - if (pDev->valuator->numMotionEvents < 1) - return; - - /* An MD must have a motion history size large enough to keep all - * potential valuators, plus the respective range of the valuators. - * 3 * INT32 for (min_val, max_val, curr_val)) - */ - if (IsMaster(pDev)) - size = sizeof(INT32) * 3 * MAX_VALUATORS; - else { - ValuatorClassPtr v = pDev->valuator; - int numAxes; - /* XI1 doesn't understand mixed mode devices */ - for (numAxes = 0; numAxes < v->numAxes; numAxes++) - if (valuator_get_mode(pDev, numAxes) != valuator_get_mode(pDev, 0)) - break; - size = sizeof(INT32) * numAxes; - } - - size += sizeof(Time); - - pDev->valuator->motion = calloc(pDev->valuator->numMotionEvents, size); - pDev->valuator->first_motion = 0; - pDev->valuator->last_motion = 0; - if (!pDev->valuator->motion) - ErrorF("[dix] %s: Failed to alloc motion history (%d bytes).\n", - pDev->name, size * pDev->valuator->numMotionEvents); -} - -/** - * Dump the motion history between start and stop into the supplied buffer. - * Only records the event for a given screen in theory, but in practice, we - * sort of ignore this. - * - * If core is set, we only generate x/y, in INT16, scaled to screen coords. - */ -int -GetMotionHistory(DeviceIntPtr pDev, xTimecoord **buff, unsigned long start, - unsigned long stop, ScreenPtr pScreen, BOOL core) -{ - char *ibuff = NULL, *obuff; - int i = 0, ret = 0; - int j, coord; - Time current; - /* The size of a single motion event. */ - int size; - int dflt; - AxisInfo from, *to; /* for scaling */ - INT32 *ocbuf, *icbuf; /* pointer to coordinates for copying */ - INT16 *corebuf; - AxisInfo core_axis = {0}; - - if (!pDev->valuator || !pDev->valuator->numMotionEvents) - return 0; - - if (core && !pScreen) - return 0; - - if (IsMaster(pDev)) - size = (sizeof(INT32) * 3 * MAX_VALUATORS) + sizeof(Time); - else - size = (sizeof(INT32) * pDev->valuator->numAxes) + sizeof(Time); - - *buff = malloc(size * pDev->valuator->numMotionEvents); - if (!(*buff)) - return 0; - obuff = (char *)*buff; - - for (i = pDev->valuator->first_motion; - i != pDev->valuator->last_motion; - i = (i + 1) % pDev->valuator->numMotionEvents) { - /* We index the input buffer by which element we're accessing, which - * is not monotonic, and the output buffer by how many events we've - * written so far. */ - ibuff = (char *) pDev->valuator->motion + (i * size); - memcpy(¤t, ibuff, sizeof(Time)); - - if (current > stop) { - return ret; - } - else if (current >= start) { - if (core) - { - memcpy(obuff, ibuff, sizeof(Time)); /* copy timestamp */ - - icbuf = (INT32*)(ibuff + sizeof(Time)); - corebuf = (INT16*)(obuff + sizeof(Time)); - - /* fetch x coordinate + range */ - memcpy(&from.min_value, icbuf++, sizeof(INT32)); - memcpy(&from.max_value, icbuf++, sizeof(INT32)); - memcpy(&coord, icbuf++, sizeof(INT32)); - - /* scale to screen coords */ - to = &core_axis; - to->max_value = pScreen->width; - coord = rescaleValuatorAxis(coord, 0.0, NULL, &from, to, pScreen->width); - - memcpy(corebuf, &coord, sizeof(INT16)); - corebuf++; - - /* fetch y coordinate + range */ - memcpy(&from.min_value, icbuf++, sizeof(INT32)); - memcpy(&from.max_value, icbuf++, sizeof(INT32)); - memcpy(&coord, icbuf++, sizeof(INT32)); - - to->max_value = pScreen->height; - coord = rescaleValuatorAxis(coord, 0.0, NULL, &from, to, pScreen->height); - memcpy(corebuf, &coord, sizeof(INT16)); - - } else if (IsMaster(pDev)) - { - memcpy(obuff, ibuff, sizeof(Time)); /* copy timestamp */ - - ocbuf = (INT32*)(obuff + sizeof(Time)); - icbuf = (INT32*)(ibuff + sizeof(Time)); - for (j = 0; j < MAX_VALUATORS; j++) - { - if (j >= pDev->valuator->numAxes) - break; - - /* fetch min/max/coordinate */ - memcpy(&from.min_value, icbuf++, sizeof(INT32)); - memcpy(&from.max_value, icbuf++, sizeof(INT32)); - memcpy(&coord, icbuf++, sizeof(INT32)); - - to = (j < pDev->valuator->numAxes) ? &pDev->valuator->axes[j] : NULL; - - /* x/y scaled to screen if no range is present */ - if (j == 0 && (from.max_value < from.min_value)) - from.max_value = pScreen->width; - else if (j == 1 && (from.max_value < from.min_value)) - from.max_value = pScreen->height; - - if (j == 0 && (to->max_value < to->min_value)) - dflt = pScreen->width; - else if (j == 1 && (to->max_value < to->min_value)) - dflt = pScreen->height; - else - dflt = 0; - - /* scale from stored range into current range */ - coord = rescaleValuatorAxis(coord, 0.0, NULL, &from, to, 0); - memcpy(ocbuf, &coord, sizeof(INT32)); - ocbuf++; - } - } else - memcpy(obuff, ibuff, size); - - /* don't advance by size here. size may be different to the - * actually written size if the MD has less valuators than MAX */ - if (core) - obuff += sizeof(INT32) + sizeof(Time); - else - obuff += (sizeof(INT32) * pDev->valuator->numAxes) + sizeof(Time); - ret++; - } - } - - return ret; -} - - -/** - * Update the motion history for a specific device, with the list of - * valuators. - * - * Layout of the history buffer: - * for SDs: [time] [val0] [val1] ... [valn] - * for MDs: [time] [min_val0] [max_val0] [val0] [min_val1] ... [valn] - * - * For events that have some valuators unset: - * min_val == max_val == val == 0. - */ -static void -updateMotionHistory(DeviceIntPtr pDev, CARD32 ms, ValuatorMask *mask, - int *valuators) -{ - char *buff = (char *) pDev->valuator->motion; - ValuatorClassPtr v; - int i; - - if (!pDev->valuator->numMotionEvents) - return; - - v = pDev->valuator; - if (IsMaster(pDev)) - { - buff += ((sizeof(INT32) * 3 * MAX_VALUATORS) + sizeof(CARD32)) * - v->last_motion; - - memcpy(buff, &ms, sizeof(Time)); - buff += sizeof(Time); - - memset(buff, 0, sizeof(INT32) * 3 * MAX_VALUATORS); - - for (i = 0; i < v->numAxes; i++) - { - /* XI1 doesn't support mixed mode devices */ - if (valuator_get_mode(pDev, i) != valuator_get_mode(pDev, 0)) - break; - if (valuator_mask_size(mask) <= i || !valuator_mask_isset(mask, i)) - { - buff += 3 * sizeof(INT32); - continue; - } - memcpy(buff, &v->axes[i].min_value, sizeof(INT32)); - buff += sizeof(INT32); - memcpy(buff, &v->axes[i].max_value, sizeof(INT32)); - buff += sizeof(INT32); - memcpy(buff, &valuators[i], sizeof(INT32)); - buff += sizeof(INT32); - } - } else - { - - buff += ((sizeof(INT32) * pDev->valuator->numAxes) + sizeof(CARD32)) * - pDev->valuator->last_motion; - - memcpy(buff, &ms, sizeof(Time)); - buff += sizeof(Time); - - memset(buff, 0, sizeof(INT32) * pDev->valuator->numAxes); - - for (i = 0; i < MAX_VALUATORS; i++) - { - if (valuator_mask_size(mask) <= i || !valuator_mask_isset(mask, i)) - { - buff += sizeof(INT32); - continue; - } - memcpy(buff, &valuators[i], sizeof(INT32)); - buff += sizeof(INT32); - } - } - - pDev->valuator->last_motion = (pDev->valuator->last_motion + 1) % - pDev->valuator->numMotionEvents; - /* If we're wrapping around, just keep the circular buffer going. */ - if (pDev->valuator->first_motion == pDev->valuator->last_motion) - pDev->valuator->first_motion = (pDev->valuator->first_motion + 1) % - pDev->valuator->numMotionEvents; - - return; -} - - -/** - * Returns the maximum number of events GetKeyboardEvents - * and GetPointerEvents will ever return. - * - * This MUST be absolutely constant, from init until exit. - */ -int -GetMaximumEventsNum(void) { - /* One raw event - * One device event - * One possible device changed event - */ - return 3; -} - - -/** - * Clip an axis to its bounds, which are declared in the call to - * InitValuatorAxisClassStruct. - */ -static void -clipAxis(DeviceIntPtr pDev, int axisNum, int *val) -{ - AxisInfoPtr axis; - - if (axisNum >= pDev->valuator->numAxes) - return; - - axis = pDev->valuator->axes + axisNum; - - /* 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, ValuatorMask *mask) -{ - int i; - - for (i = 0; i < valuator_mask_size(mask); i++) - if (valuator_mask_isset(mask, i)) - { - int val = valuator_mask_get(mask, i); - clipAxis(pDev, i, &val); - valuator_mask_set(mask, i, val); - } -} - -/** - * Create the DCCE event (does not update the master's device state yet, this - * is done in the event processing). - * Pull in the coordinates from the MD if necessary. - * - * @param events Pointer to a pre-allocated event array. - * @param dev The slave device that generated an event. - * @param type Either DEVCHANGE_POINTER_EVENT and/or DEVCHANGE_KEYBOARD_EVENT - * @param num_events The current number of events, returns the number of - * events if a DCCE was generated. - * @return The updated @events pointer. - */ -InternalEvent* -UpdateFromMaster(InternalEvent* events, DeviceIntPtr dev, int type, int *num_events) -{ - DeviceIntPtr master; - - master = GetMaster(dev, (type & DEVCHANGE_POINTER_EVENT) ? MASTER_POINTER : MASTER_KEYBOARD); - - if (master && master->last.slave != dev) - { - CreateClassesChangedEvent(events, master, dev, type); - if (IsPointerDevice(master)) - { - updateSlaveDeviceCoords(master, dev); - master->last.numValuators = dev->last.numValuators; - } - master->last.slave = dev; - (*num_events)++; - events++; - } - return events; -} - -/** - * Move the device's pointer to the position given in the valuators. - * - * @param dev The device which's pointer is to be moved. - * @param x Returns the x position of the pointer after the move. - * @param y Returns the y position of the pointer after the move. - * @param mask Bit mask of valid valuators. - * @param valuators Valuator data for each axis between @first and - * @first+@num. - */ -static void -moveAbsolute(DeviceIntPtr dev, int *x, int *y, ValuatorMask *mask) -{ - int i; - - if (valuator_mask_isset(mask, 0)) - *x = valuator_mask_get(mask, 0); - else - *x = dev->last.valuators[0]; - - if (valuator_mask_isset(mask, 1)) - *y = valuator_mask_get(mask, 1); - else - *y = dev->last.valuators[1]; - - clipAxis(dev, 0, x); - clipAxis(dev, 1, y); - - for (i = 2; i < valuator_mask_size(mask); i++) - { - if (valuator_mask_isset(mask, i)) - { - dev->last.valuators[i] = valuator_mask_get(mask, i); - clipAxis(dev, i, &dev->last.valuators[i]); - } - } -} - -/** - * Move the device's pointer by the values given in @valuators. - * - * @param dev The device which's pointer is to be moved. - * @param x Returns the x position of the pointer after the move. - * @param y Returns the y position of the pointer after the move. - * @param mask Bit mask of valid valuators. - * @param valuators Valuator data for each axis between @first and - * @first+@num. - */ -static void -moveRelative(DeviceIntPtr dev, int *x, int *y, ValuatorMask *mask) -{ - int i; - - *x = dev->last.valuators[0]; - *y = dev->last.valuators[1]; - - if (valuator_mask_isset(mask, 0)) - *x += valuator_mask_get(mask, 0); - - if (valuator_mask_isset(mask, 1)) - *y += valuator_mask_get(mask, 1); - - /* 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 (dev->valuator && (IsMaster(dev) || !IsFloating(dev))) { - if (valuator_get_mode(dev, 0) == Absolute) - clipAxis(dev, 0, x); - if (valuator_get_mode(dev, 1) == Absolute) - clipAxis(dev, 1, y); - } - - /* calc other axes, clip, drop back into valuators */ - for (i = 2; i < valuator_mask_size(mask); i++) - { - if (valuator_mask_isset(mask, i)) - { - dev->last.valuators[i] += valuator_mask_get(mask, i); - if (valuator_get_mode(dev, i) == Absolute) - clipAxis(dev, i, &dev->last.valuators[i]); - valuator_mask_set(mask, i, dev->last.valuators[i]); - } - } -} - -/** - * Accelerate the data in valuators based on the device's acceleration scheme. - * - * @param dev The device which's pointer is to be moved. - * @param valuators Valuator mask - * @param ms Current time. - */ -static void -accelPointer(DeviceIntPtr dev, ValuatorMask* valuators, CARD32 ms) -{ - if (dev->valuator->accelScheme.AccelSchemeProc) - dev->valuator->accelScheme.AccelSchemeProc(dev, valuators, ms); -} - -/** - * If we have HW cursors, this actually moves the visible sprite. If not, we - * just do all the screen crossing, etc. - * - * We scale from device to screen coordinates here, call - * miPointerSetPosition() and then scale back into device coordinates (if - * needed). miPSP will change x/y if the screen was crossed. - * - * The coordinates provided are always absolute. The parameter mode whether - * it was relative or absolute movement that landed us at those coordinates. - * - * @param dev The device to be moved. - * @param mode Movement mode (Absolute or Relative) - * @param x Pointer to current x-axis value, may be modified. - * @param y Pointer to current y-axis value, may be modified. - * @param x_frac Fractional part of current x-axis value, may be modified. - * @param y_frac Fractional part of current y-axis value, may be modified. - * @param scr Screen the device's sprite is currently on. - * @param screenx Screen x coordinate the sprite is on after the update. - * @param screeny Screen y coordinate the sprite is on after the update. - * @param screenx_frac Fractional part of screen x coordinate, as above. - * @param screeny_frac Fractional part of screen y coordinate, as above. - */ -static void -positionSprite(DeviceIntPtr dev, int mode, - int *x, int *y, float x_frac, float y_frac, - ScreenPtr scr, int *screenx, int *screeny, float *screenx_frac, float *screeny_frac) -{ - int old_screenx, old_screeny; - - /* scale x&y to screen */ - if (dev->valuator && dev->valuator->numAxes > 0) { - *screenx = rescaleValuatorAxis(*x, x_frac, screenx_frac, - dev->valuator->axes + 0, NULL, scr->width); - } else { - *screenx = dev->last.valuators[0]; - *screenx_frac = dev->last.remainder[0]; - } - - if (dev->valuator && dev->valuator->numAxes > 1) { - *screeny = rescaleValuatorAxis(*y, y_frac, screeny_frac, - dev->valuator->axes + 1, NULL, scr->height); - } else { - *screeny = dev->last.valuators[1]; - *screeny_frac = dev->last.remainder[1]; - } - - /* Hit the left screen edge? */ - if (*screenx <= 0 && *screenx_frac < 0.0f) - { - *screenx_frac = 0.0f; - x_frac = 0.0f; - } - if (*screeny <= 0 && *screeny_frac < 0.0f) - { - *screeny_frac = 0.0f; - y_frac = 0.0f; - } - - - old_screenx = *screenx; - old_screeny = *screeny; - /* This takes care of crossing screens for us, as well as clipping - * to the current screen. */ - miPointerSetPosition(dev, mode, screenx, screeny); - - if(!IsMaster(dev) && !IsFloating(dev)) { - DeviceIntPtr master = GetMaster(dev, MASTER_POINTER); - master->last.valuators[0] = *screenx; - master->last.valuators[1] = *screeny; - master->last.remainder[0] = *screenx_frac; - master->last.remainder[1] = *screeny_frac; - } - - if (dev->valuator) - { - /* Crossed screen? Scale back to device coordiantes */ - if(*screenx != old_screenx) - { - scr = miPointerGetScreen(dev); - *x = rescaleValuatorAxis(*screenx, *screenx_frac, &x_frac, NULL, - dev->valuator->axes + 0, scr->width); - } - if(*screeny != old_screeny) - { - scr = miPointerGetScreen(dev); - *y = rescaleValuatorAxis(*screeny, *screeny_frac, &y_frac, NULL, - dev->valuator->axes + 1, scr->height); - } - } - - /* dropy x/y (device coordinates) back into valuators for next event */ - dev->last.valuators[0] = *x; - dev->last.valuators[1] = *y; - dev->last.remainder[0] = x_frac; - dev->last.remainder[1] = y_frac; -} - -/** - * Update the motion history for the device and (if appropriate) for its - * master device. - * @param dev Slave device to update. - * @param mask Bit mask of valid valuators to append to history. - * @param num Total number of valuators to append to history. - * @param ms Current time - */ -static void -updateHistory(DeviceIntPtr dev, ValuatorMask *mask, CARD32 ms) -{ - if (!dev->valuator) - return; - - updateMotionHistory(dev, ms, mask, dev->last.valuators); - if(!IsMaster(dev) && !IsFloating(dev)) - { - DeviceIntPtr master = GetMaster(dev, MASTER_POINTER); - updateMotionHistory(master, ms, mask, dev->last.valuators); - } -} - -static void -queueEventList(DeviceIntPtr device, InternalEvent *events, int nevents) -{ - int i; - for (i = 0; i < nevents; i++) - mieqEnqueue(device, &events[i]); -} - -/** - * Generate internal events representing this keyboard event and enqueue - * them on the event queue. - * - * This function is not reentrant. Disable signals before calling. - * - * FIXME: flags for relative/abs motion? - * - * @param device The device to generate the event for - * @param type Event type, one of KeyPress or KeyRelease - * @param keycode Key code of the pressed/released key - * @param mask Valuator mask for valuators present for this event. - * - */ -void -QueueKeyboardEvents(DeviceIntPtr device, int type, - int keycode, const ValuatorMask *mask) -{ - int nevents; - - nevents = GetKeyboardEvents(InputEventList, device, type, keycode, mask); - queueEventList(device, InputEventList, nevents); -} - -/** - * Returns a set of InternalEvents for KeyPress/KeyRelease, optionally - * also with valuator events. - * - * The DDX is responsible for allocating the event list in the first - * place via InitEventList(), and for freeing it. - * - * @return the number of events written into events. - */ -int -GetKeyboardEvents(InternalEvent *events, DeviceIntPtr pDev, int type, - int key_code, const ValuatorMask *mask_in) { - int num_events = 0; - CARD32 ms = 0; - DeviceEvent *event; - RawDeviceEvent *raw; - ValuatorMask mask; - - /* refuse events from disabled devices */ - if (!pDev->enabled) - return 0; - - if (!events ||!pDev->key || !pDev->focus || !pDev->kbdfeed || - (type != KeyPress && type != KeyRelease) || - (key_code < 8 || key_code > 255)) - return 0; - - num_events = 1; - - events = UpdateFromMaster(events, pDev, DEVCHANGE_KEYBOARD_EVENT, &num_events); - - /* Handle core repeating, via press/release/press/release. */ - if (type == KeyPress && key_is_down(pDev, key_code, KEY_POSTED)) { - /* 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->xkbInfo->desc->map->modmap[key_code]) - return 0; - } - - ms = GetTimeInMillis(); - - raw = &events->raw_event; - events++; - num_events++; - - valuator_mask_copy(&mask, mask_in); - - init_raw(pDev, raw, ms, type, key_code); - set_raw_valuators(raw, &mask, raw->valuators.data_raw); - - clipValuators(pDev, &mask); - - set_raw_valuators(raw, &mask, raw->valuators.data); - - event = &events->device_event; - init_event(pDev, event, ms); - event->detail.key = key_code; - - if (type == KeyPress) { - event->type = ET_KeyPress; - set_key_down(pDev, key_code, KEY_POSTED); - } - else if (type == KeyRelease) { - event->type = ET_KeyRelease; - set_key_up(pDev, key_code, KEY_POSTED); - } - - clipValuators(pDev, &mask); - - set_valuators(pDev, event, &mask); - - return num_events; -} - -/** - * Initialize an event array large enough for num_events arrays. - * This event list is to be passed into GetPointerEvents() and - * GetKeyboardEvents(). - * - * @param num_events Number of elements in list. - */ -InternalEvent* -InitEventList(int num_events) -{ - InternalEvent *events = calloc(num_events, sizeof(InternalEvent)); - return events; -} - -/** - * Free an event list. - * - * @param list The list to be freed. - * @param num_events Number of elements in list. - */ -void -FreeEventList(InternalEvent *list, int num_events) -{ - free(list); -} - -/** - * Transform vector x/y according to matrix m and drop the rounded coords - * back into x/y. - */ -static void -transform(struct pixman_f_transform *m, int *x, int *y) -{ - struct pixman_f_vector p = {.v = {*x, *y, 1}}; - pixman_f_transform_point(m, &p); - - *x = lround(p.v[0]); - *y = lround(p.v[1]); -} - -static void -transformAbsolute(DeviceIntPtr dev, ValuatorMask *mask) -{ - int x, y, ox, oy; - - ox = x = valuator_mask_isset(mask, 0) ? valuator_mask_get(mask, 0) : - dev->last.valuators[0]; - oy = y = valuator_mask_isset(mask, 1) ? valuator_mask_get(mask, 1) : - dev->last.valuators[1]; - - transform(&dev->transform, &x, &y); - - if (valuator_mask_isset(mask, 0) || ox != x) - valuator_mask_set(mask, 0, x); - - if (valuator_mask_isset(mask, 1) || oy != y) - valuator_mask_set(mask, 1, y); -} - -/** - * Generate internal events representing this pointer event and enqueue them - * on the event queue. - * - * This function is not reentrant. Disable signals before calling. - * - * @param device The device to generate the event for - * @param type Event type, one of ButtonPress, ButtonRelease, MotionNotify - * @param buttons Button number of the buttons modified. Must be 0 for - * MotionNotify - * @param flags Event modification flags - * @param mask Valuator mask for valuators present for this event. - */ -void -QueuePointerEvents(DeviceIntPtr device, int type, - int buttons, int flags, const ValuatorMask *mask) -{ - int nevents; - - nevents = GetPointerEvents(InputEventList, device, type, buttons, flags, mask); - queueEventList(device, InputEventList, nevents); -} - -/** - * Generate a series of InternalEvents representing pointer motion, or - * button presses. - * - * The DDX is responsible for allocating the events 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. - * - * @return the number of events written into events. - */ -int -GetPointerEvents(InternalEvent *events, DeviceIntPtr pDev, int type, int buttons, - int flags, const ValuatorMask *mask_in) { - int num_events = 1; - CARD32 ms; - DeviceEvent *event; - RawDeviceEvent *raw; - int x = 0, y = 0, /* device coords */ - cx, cy; /* only screen coordinates */ - float x_frac = 0.0, y_frac = 0.0, cx_frac, cy_frac; - ScreenPtr scr = miPointerGetScreen(pDev); - ValuatorMask mask; - - /* refuse events from disabled devices */ - if (!pDev->enabled) - return 0; - - if (!scr) - return 0; - - switch (type) - { - case MotionNotify: - if (!mask_in || valuator_mask_num_valuators(mask_in) <= 0) - return 0; - break; - case ButtonPress: - case ButtonRelease: - if (!pDev->button || !buttons) - return 0; - break; - default: - return 0; - } - - ms = GetTimeInMillis(); /* before pointer update to help precision */ - - events = UpdateFromMaster(events, pDev, DEVCHANGE_POINTER_EVENT, &num_events); - - raw = &events->raw_event; - events++; - num_events++; - - valuator_mask_copy(&mask, mask_in); - - init_raw(pDev, raw, ms, type, buttons); - set_raw_valuators(raw, &mask, raw->valuators.data_raw); - - if (flags & POINTER_ABSOLUTE) - { - if (flags & POINTER_SCREEN) /* valuators are in screen coords */ - { - int scaled; - - if (valuator_mask_isset(&mask, 0)) - { - scaled = rescaleValuatorAxis(valuator_mask_get(&mask, 0), - 0.0, &x_frac, NULL, - pDev->valuator->axes + 0, - scr->width); - valuator_mask_set(&mask, 0, scaled); - } - if (valuator_mask_isset(&mask, 1)) - { - scaled = rescaleValuatorAxis(valuator_mask_get(&mask, 1), - 0.0, &y_frac, NULL, - pDev->valuator->axes + 1, - scr->height); - valuator_mask_set(&mask, 1, scaled); - } - } - - transformAbsolute(pDev, &mask); - moveAbsolute(pDev, &x, &y, &mask); - } else { - if (flags & POINTER_ACCELERATE) { - accelPointer(pDev, &mask, ms); - /* The pointer acceleration code modifies the fractional part - * in-place, so we need to extract this information first */ - x_frac = pDev->last.remainder[0]; - y_frac = pDev->last.remainder[1]; - } - moveRelative(pDev, &x, &y, &mask); - } - - set_raw_valuators(raw, &mask, raw->valuators.data); - - positionSprite(pDev, (flags & POINTER_ABSOLUTE) ? Absolute : Relative, - &x, &y, x_frac, y_frac, scr, &cx, &cy, &cx_frac, &cy_frac); - updateHistory(pDev, &mask, ms); - - /* Update the valuators with the true value sent to the client*/ - if (valuator_mask_isset(&mask, 0)) - valuator_mask_set(&mask, 0, x); - if (valuator_mask_isset(&mask, 1)) - valuator_mask_set(&mask, 1, y); - - clipValuators(pDev, &mask); - - event = &events->device_event; - init_event(pDev, event, ms); - - if (type == MotionNotify) { - event->type = ET_Motion; - event->detail.button = 0; - } - else { - if (type == ButtonPress) { - event->type = ET_ButtonPress; - set_button_down(pDev, buttons, BUTTON_POSTED); - } - else if (type == ButtonRelease) { - event->type = ET_ButtonRelease; - set_button_up(pDev, buttons, BUTTON_POSTED); - } - event->detail.button = buttons; - } - - event->root_x = cx; /* root_x/y always in screen coords */ - event->root_y = cy; - event->root_x_frac = cx_frac; - event->root_y_frac = cy_frac; - - set_valuators(pDev, event, &mask); - - return num_events; -} - -/** - * Generate internal events representing this proximity event and enqueue - * them on the event queue. - * - * This function is not reentrant. Disable signals before calling. - * - * @param device The device to generate the event for - * @param type Event type, one of ProximityIn or ProximityOut - * @param keycode Key code of the pressed/released key - * @param mask Valuator mask for valuators present for this event. - * - */ -void -QueueProximityEvents(DeviceIntPtr device, int type, - const ValuatorMask *mask) -{ - int nevents; - - nevents = GetProximityEvents(InputEventList, device, type, mask); - queueEventList(device, InputEventList, nevents); -} - -/** - * Generate ProximityIn/ProximityOut InternalEvents, accompanied by - * valuators. - * - * The DDX is responsible for allocating the events in the first place via - * InitEventList(), and for freeing it. - * - * @return the number of events written into events. - */ -int -GetProximityEvents(InternalEvent *events, DeviceIntPtr pDev, int type, const ValuatorMask *mask_in) -{ - int num_events = 1, i; - DeviceEvent *event; - ValuatorMask mask; - - /* refuse events from disabled devices */ - if (!pDev->enabled) - return 0; - - /* Sanity checks. */ - if ((type != ProximityIn && type != ProximityOut) || !mask_in) - return 0; - if (!pDev->valuator) - return 0; - - valuator_mask_copy(&mask, mask_in); - - /* ignore relative axes for proximity. */ - for (i = 0; i < valuator_mask_size(&mask); i++) - { - if (valuator_mask_isset(&mask, i) && - valuator_get_mode(pDev, i) == Relative) - valuator_mask_unset(&mask, i); - } - - /* FIXME: posting proximity events with relative valuators only results - * in an empty event, EventToXI() will fail to convert → no event sent - * to client. */ - - events = UpdateFromMaster(events, pDev, DEVCHANGE_POINTER_EVENT, &num_events); - - event = &events->device_event; - init_event(pDev, event, GetTimeInMillis()); - event->type = (type == ProximityIn) ? ET_ProximityIn : ET_ProximityOut; - - clipValuators(pDev, &mask); - - set_valuators(pDev, event, &mask); - - return num_events; -} - -/** - * 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) -{ - DeviceEvent ev; - -#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 += screenInfo.screens[0]->x - screenInfo.screens[screen]->x; - y += screenInfo.screens[0]->y - screenInfo.screens[screen]->y; - } -#endif - - memset(&ev, 0, sizeof(DeviceEvent)); - init_event(pDev, &ev, time); - ev.root_x = x; - ev.root_y = y; - ev.type = ET_Motion; - ev.time = time; - - /* FIXME: MD/SD considerations? */ - (*pDev->public.processInputProc)((InternalEvent*)&ev, pDev); -} +/*
+ * Copyright © 2006 Nokia Corporation
+ * Copyright © 2006-2007 Daniel Stone
+ * Copyright © 2008 Red Hat, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Daniel Stone <daniel@fooishbar.org>
+ * Peter Hutterer <peter.hutterer@who-t.net>
+ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <X11/X.h>
+#include <X11/keysym.h>
+#include <X11/Xproto.h>
+#include <math.h>
+
+#include "misc.h"
+#include "resource.h"
+#include "inputstr.h"
+#include "scrnintstr.h"
+#include "cursorstr.h"
+#include "dixstruct.h"
+#include "globals.h"
+#include "dixevents.h"
+#include "mipointer.h"
+#include "eventstr.h"
+#include "eventconvert.h"
+#include "inpututils.h"
+#include "mi.h"
+
+#include <X11/extensions/XKBproto.h>
+#include "xkbsrv.h"
+
+#ifdef PANORAMIX
+#include "panoramiX.h"
+#include "panoramiXsrv.h"
+#endif
+
+#include <X11/extensions/XI.h>
+#include <X11/extensions/XIproto.h>
+#include <pixman.h>
+#include "exglobals.h"
+#include "exevents.h"
+#include "extnsionst.h"
+#include "listdev.h" /* for sizing up DeviceClassesChangedEvent */
+
+#ifdef _MSC_VER
+#include <math.h>
+
+float roundf(float f)
+{
+ return ((f<0.0f) ? ceil(f-.5) : floor (f+.5));
+}
+double roundd(double f)
+{
+ return ((f<0.0) ? ceil(f-.5) : floor (f+.5));
+}
+#define lroundf(val) ((int)roundf(val))
+#define lround(val) ((int)roundd(val))
+#endif
+
+/* Number of motion history events to store. */
+#define MOTION_HISTORY_SIZE 256
+
+/**
+ * InputEventList is the storage for input events generated by
+ * QueuePointerEvents, QueueKeyboardEvents, and QueueProximityEvents.
+ * This list is allocated on startup by the DIX.
+ */
+InternalEvent* InputEventList = NULL;
+
+/**
+ * Pick some arbitrary size for Xi motion history.
+ */
+int
+GetMotionHistorySize(void)
+{
+ return MOTION_HISTORY_SIZE;
+}
+
+void
+set_button_down(DeviceIntPtr pDev, int button, int type)
+{
+ if (type == BUTTON_PROCESSED)
+ SetBit(pDev->button->down, button);
+ else
+ SetBit(pDev->button->postdown, button);
+}
+
+void
+set_button_up(DeviceIntPtr pDev, int button, int type)
+{
+ if (type == BUTTON_PROCESSED)
+ ClearBit(pDev->button->down, button);
+ else
+ ClearBit(pDev->button->postdown, button);
+}
+
+Bool
+button_is_down(DeviceIntPtr pDev, int button, int type)
+{
+ Bool ret = FALSE;
+
+ if (type & BUTTON_PROCESSED)
+ ret = ret || BitIsOn(pDev->button->down, button);
+ if (type & BUTTON_POSTED)
+ ret = ret || BitIsOn(pDev->button->postdown, button);
+
+ return ret;
+}
+
+void
+set_key_down(DeviceIntPtr pDev, int key_code, int type)
+{
+ if (type == KEY_PROCESSED)
+ SetBit(pDev->key->down, key_code);
+ else
+ SetBit(pDev->key->postdown, key_code);
+}
+
+void
+set_key_up(DeviceIntPtr pDev, int key_code, int type)
+{
+ if (type == KEY_PROCESSED)
+ ClearBit(pDev->key->down, key_code);
+ else
+ ClearBit(pDev->key->postdown, key_code);
+}
+
+Bool
+key_is_down(DeviceIntPtr pDev, int key_code, int type)
+{
+ Bool ret = FALSE;
+
+ if (type & KEY_PROCESSED)
+ ret = ret || BitIsOn(pDev->key->down, key_code);
+ if (type & KEY_POSTED)
+ ret = ret || BitIsOn(pDev->key->postdown, key_code);
+
+ return ret;
+}
+
+static Bool
+key_autorepeats(DeviceIntPtr pDev, int key_code)
+{
+ return !!(pDev->kbdfeed->ctrl.autoRepeats[key_code >> 3] &
+ (1 << (key_code & 7)));
+}
+
+static void
+init_event(DeviceIntPtr dev, DeviceEvent* event, Time ms)
+{
+ memset(event, 0, sizeof(DeviceEvent));
+ event->header = ET_Internal;
+ event->length = sizeof(DeviceEvent);
+ event->time = ms;
+ event->deviceid = dev->id;
+ event->sourceid = dev->id;
+}
+
+static void
+init_raw(DeviceIntPtr dev, RawDeviceEvent *event, Time ms, int type, int detail)
+{
+ memset(event, 0, sizeof(RawDeviceEvent));
+ event->header = ET_Internal;
+ event->length = sizeof(RawDeviceEvent);
+ event->type = ET_RawKeyPress - ET_KeyPress + type;
+ event->time = ms;
+ event->deviceid = dev->id;
+ event->sourceid = dev->id;
+ event->detail.button = detail;
+}
+
+static void
+set_raw_valuators(RawDeviceEvent *event, ValuatorMask *mask, int32_t* data)
+{
+ int i;
+
+ for (i = 0; i < valuator_mask_size(mask); i++)
+ {
+ if (valuator_mask_isset(mask, i))
+ {
+ SetBit(event->valuators.mask, i);
+ data[i] = valuator_mask_get(mask, i);
+ }
+ }
+}
+
+
+static void
+set_valuators(DeviceIntPtr dev, DeviceEvent* event, ValuatorMask *mask)
+{
+ int i;
+
+ /* Set the data to the previous value for unset absolute axes. The values
+ * may be used when sent as part of an XI 1.x valuator event. */
+ for (i = 0; i < valuator_mask_size(mask); i++)
+ {
+ if (valuator_mask_isset(mask, i))
+ {
+ SetBit(event->valuators.mask, i);
+ if (valuator_get_mode(dev, i) == Absolute)
+ SetBit(event->valuators.mode, i);
+ event->valuators.data[i] = valuator_mask_get(mask, i);
+ event->valuators.data_frac[i] =
+ dev->last.remainder[i] * (1 << 16) * (1 << 16);
+ }
+ else if (valuator_get_mode(dev, i) == Absolute)
+ event->valuators.data[i] = dev->valuator->axisVal[i];
+ }
+}
+
+void
+CreateClassesChangedEvent(InternalEvent* event,
+ DeviceIntPtr master,
+ DeviceIntPtr slave,
+ int type)
+{
+ int i;
+ DeviceChangedEvent *dce;
+ CARD32 ms = GetTimeInMillis();
+
+ dce = &event->changed_event;
+ memset(dce, 0, sizeof(DeviceChangedEvent));
+ dce->deviceid = slave->id;
+ dce->masterid = master->id;
+ dce->header = ET_Internal;
+ dce->length = sizeof(DeviceChangedEvent);
+ dce->type = ET_DeviceChanged;
+ dce->time = ms;
+ dce->flags = type;
+ dce->flags |= DEVCHANGE_SLAVE_SWITCH;
+ dce->sourceid = slave->id;
+
+ if (slave->button)
+ {
+ dce->buttons.num_buttons = slave->button->numButtons;
+ for (i = 0; i < dce->buttons.num_buttons; i++)
+ dce->buttons.names[i] = slave->button->labels[i];
+ }
+ if (slave->valuator)
+ {
+ dce->num_valuators = slave->valuator->numAxes;
+ for (i = 0; i < dce->num_valuators; i++)
+ {
+ dce->valuators[i].min = slave->valuator->axes[i].min_value;
+ dce->valuators[i].max = slave->valuator->axes[i].max_value;
+ dce->valuators[i].resolution = slave->valuator->axes[i].resolution;
+ dce->valuators[i].mode = slave->valuator->axes[i].mode;
+ dce->valuators[i].name = slave->valuator->axes[i].label;
+ }
+ }
+ if (slave->key)
+ {
+ dce->keys.min_keycode = slave->key->xkbInfo->desc->min_key_code;
+ dce->keys.max_keycode = slave->key->xkbInfo->desc->max_key_code;
+ }
+}
+
+/**
+ * Rescale the coord between the two axis ranges.
+ */
+static int
+rescaleValuatorAxis(int coord, float remainder, float *remainder_return, AxisInfoPtr from, AxisInfoPtr to,
+ int defmax)
+{
+ int fmin = 0, tmin = 0, fmax = defmax, tmax = defmax, coord_return;
+ float value;
+
+ if(from && from->min_value < from->max_value) {
+ fmin = from->min_value;
+ fmax = from->max_value;
+ }
+ if(to && to->min_value < to->max_value) {
+ tmin = to->min_value;
+ tmax = to->max_value;
+ }
+
+ if(fmin == tmin && fmax == tmax) {
+ if (remainder_return)
+ *remainder_return = remainder;
+ return coord;
+ }
+
+ if(fmax == fmin) { /* avoid division by 0 */
+ if (remainder_return)
+ *remainder_return = 0.0;
+ return 0;
+ }
+
+ value = (coord + remainder - fmin) * (tmax - tmin) / (fmax - fmin) + tmin;
+ coord_return = lroundf(value);
+ if (remainder_return)
+ *remainder_return = value - coord_return;
+ return coord_return;
+}
+
+/**
+ * Update all coordinates when changing to a different SD
+ * to ensure that relative reporting will work as expected
+ * without loss of precision.
+ *
+ * pDev->last.valuators will be in absolute device coordinates after this
+ * function.
+ */
+static void
+updateSlaveDeviceCoords(DeviceIntPtr master, DeviceIntPtr pDev)
+{
+ ScreenPtr scr = miPointerGetScreen(pDev);
+ int i;
+ DeviceIntPtr lastSlave;
+
+ /* master->last.valuators[0]/[1] is in screen coords and the actual
+ * position of the pointer */
+ pDev->last.valuators[0] = master->last.valuators[0];
+ pDev->last.valuators[1] = master->last.valuators[1];
+
+ if (!pDev->valuator)
+ return;
+
+ /* scale back to device coordinates */
+ if(pDev->valuator->numAxes > 0)
+ pDev->last.valuators[0] = rescaleValuatorAxis(pDev->last.valuators[0], pDev->last.remainder[0],
+ &pDev->last.remainder[0], NULL, pDev->valuator->axes + 0, scr->width);
+ if(pDev->valuator->numAxes > 1)
+ pDev->last.valuators[1] = rescaleValuatorAxis(pDev->last.valuators[1], pDev->last.remainder[1],
+ &pDev->last.remainder[1], NULL, pDev->valuator->axes + 1, scr->height);
+
+ /* calculate the other axis as well based on info from the old
+ * slave-device. If the old slave had less axes than this one,
+ * last.valuators is reset to 0.
+ */
+ if ((lastSlave = master->last.slave) && lastSlave->valuator) {
+ for (i = 2; i < pDev->valuator->numAxes; i++) {
+ if (i >= lastSlave->valuator->numAxes)
+ pDev->last.valuators[i] = 0;
+ else
+ pDev->last.valuators[i] =
+ rescaleValuatorAxis(pDev->last.valuators[i],
+ pDev->last.remainder[i],
+ &pDev->last.remainder[i],
+ lastSlave->valuator->axes + i,
+ pDev->valuator->axes + i, 0);
+ }
+ }
+
+}
+
+/**
+ * Allocate the motion history buffer.
+ */
+void
+AllocateMotionHistory(DeviceIntPtr pDev)
+{
+ int size;
+ free(pDev->valuator->motion);
+
+ if (pDev->valuator->numMotionEvents < 1)
+ return;
+
+ /* An MD must have a motion history size large enough to keep all
+ * potential valuators, plus the respective range of the valuators.
+ * 3 * INT32 for (min_val, max_val, curr_val))
+ */
+ if (IsMaster(pDev))
+ size = sizeof(INT32) * 3 * MAX_VALUATORS;
+ else {
+ ValuatorClassPtr v = pDev->valuator;
+ int numAxes;
+ /* XI1 doesn't understand mixed mode devices */
+ for (numAxes = 0; numAxes < v->numAxes; numAxes++)
+ if (valuator_get_mode(pDev, numAxes) != valuator_get_mode(pDev, 0))
+ break;
+ size = sizeof(INT32) * numAxes;
+ }
+
+ size += sizeof(Time);
+
+ pDev->valuator->motion = calloc(pDev->valuator->numMotionEvents, size);
+ pDev->valuator->first_motion = 0;
+ pDev->valuator->last_motion = 0;
+ if (!pDev->valuator->motion)
+ ErrorF("[dix] %s: Failed to alloc motion history (%d bytes).\n",
+ pDev->name, size * pDev->valuator->numMotionEvents);
+}
+
+/**
+ * Dump the motion history between start and stop into the supplied buffer.
+ * Only records the event for a given screen in theory, but in practice, we
+ * sort of ignore this.
+ *
+ * If core is set, we only generate x/y, in INT16, scaled to screen coords.
+ */
+int
+GetMotionHistory(DeviceIntPtr pDev, xTimecoord **buff, unsigned long start,
+ unsigned long stop, ScreenPtr pScreen, BOOL core)
+{
+ char *ibuff = NULL, *obuff;
+ int i = 0, ret = 0;
+ int j, coord;
+ Time current;
+ /* The size of a single motion event. */
+ int size;
+ int dflt;
+ AxisInfo from, *to; /* for scaling */
+ INT32 *ocbuf, *icbuf; /* pointer to coordinates for copying */
+ INT16 *corebuf;
+ AxisInfo core_axis = {0};
+
+ if (!pDev->valuator || !pDev->valuator->numMotionEvents)
+ return 0;
+
+ if (core && !pScreen)
+ return 0;
+
+ if (IsMaster(pDev))
+ size = (sizeof(INT32) * 3 * MAX_VALUATORS) + sizeof(Time);
+ else
+ size = (sizeof(INT32) * pDev->valuator->numAxes) + sizeof(Time);
+
+ *buff = malloc(size * pDev->valuator->numMotionEvents);
+ if (!(*buff))
+ return 0;
+ obuff = (char *)*buff;
+
+ for (i = pDev->valuator->first_motion;
+ i != pDev->valuator->last_motion;
+ i = (i + 1) % pDev->valuator->numMotionEvents) {
+ /* We index the input buffer by which element we're accessing, which
+ * is not monotonic, and the output buffer by how many events we've
+ * written so far. */
+ ibuff = (char *) pDev->valuator->motion + (i * size);
+ memcpy(¤t, ibuff, sizeof(Time));
+
+ if (current > stop) {
+ return ret;
+ }
+ else if (current >= start) {
+ if (core)
+ {
+ memcpy(obuff, ibuff, sizeof(Time)); /* copy timestamp */
+
+ icbuf = (INT32*)(ibuff + sizeof(Time));
+ corebuf = (INT16*)(obuff + sizeof(Time));
+
+ /* fetch x coordinate + range */
+ memcpy(&from.min_value, icbuf++, sizeof(INT32));
+ memcpy(&from.max_value, icbuf++, sizeof(INT32));
+ memcpy(&coord, icbuf++, sizeof(INT32));
+
+ /* scale to screen coords */
+ to = &core_axis;
+ to->max_value = pScreen->width;
+ coord = rescaleValuatorAxis(coord, 0.0, NULL, &from, to, pScreen->width);
+
+ memcpy(corebuf, &coord, sizeof(INT16));
+ corebuf++;
+
+ /* fetch y coordinate + range */
+ memcpy(&from.min_value, icbuf++, sizeof(INT32));
+ memcpy(&from.max_value, icbuf++, sizeof(INT32));
+ memcpy(&coord, icbuf++, sizeof(INT32));
+
+ to->max_value = pScreen->height;
+ coord = rescaleValuatorAxis(coord, 0.0, NULL, &from, to, pScreen->height);
+ memcpy(corebuf, &coord, sizeof(INT16));
+
+ } else if (IsMaster(pDev))
+ {
+ memcpy(obuff, ibuff, sizeof(Time)); /* copy timestamp */
+
+ ocbuf = (INT32*)(obuff + sizeof(Time));
+ icbuf = (INT32*)(ibuff + sizeof(Time));
+ for (j = 0; j < MAX_VALUATORS; j++)
+ {
+ if (j >= pDev->valuator->numAxes)
+ break;
+
+ /* fetch min/max/coordinate */
+ memcpy(&from.min_value, icbuf++, sizeof(INT32));
+ memcpy(&from.max_value, icbuf++, sizeof(INT32));
+ memcpy(&coord, icbuf++, sizeof(INT32));
+
+ to = (j < pDev->valuator->numAxes) ? &pDev->valuator->axes[j] : NULL;
+
+ /* x/y scaled to screen if no range is present */
+ if (j == 0 && (from.max_value < from.min_value))
+ from.max_value = pScreen->width;
+ else if (j == 1 && (from.max_value < from.min_value))
+ from.max_value = pScreen->height;
+
+ if (j == 0 && (to->max_value < to->min_value))
+ dflt = pScreen->width;
+ else if (j == 1 && (to->max_value < to->min_value))
+ dflt = pScreen->height;
+ else
+ dflt = 0;
+
+ /* scale from stored range into current range */
+ coord = rescaleValuatorAxis(coord, 0.0, NULL, &from, to, 0);
+ memcpy(ocbuf, &coord, sizeof(INT32));
+ ocbuf++;
+ }
+ } else
+ memcpy(obuff, ibuff, size);
+
+ /* don't advance by size here. size may be different to the
+ * actually written size if the MD has less valuators than MAX */
+ if (core)
+ obuff += sizeof(INT32) + sizeof(Time);
+ else
+ obuff += (sizeof(INT32) * pDev->valuator->numAxes) + sizeof(Time);
+ ret++;
+ }
+ }
+
+ return ret;
+}
+
+
+/**
+ * Update the motion history for a specific device, with the list of
+ * valuators.
+ *
+ * Layout of the history buffer:
+ * for SDs: [time] [val0] [val1] ... [valn]
+ * for MDs: [time] [min_val0] [max_val0] [val0] [min_val1] ... [valn]
+ *
+ * For events that have some valuators unset:
+ * min_val == max_val == val == 0.
+ */
+static void
+updateMotionHistory(DeviceIntPtr pDev, CARD32 ms, ValuatorMask *mask,
+ int *valuators)
+{
+ char *buff = (char *) pDev->valuator->motion;
+ ValuatorClassPtr v;
+ int i;
+
+ if (!pDev->valuator->numMotionEvents)
+ return;
+
+ v = pDev->valuator;
+ if (IsMaster(pDev))
+ {
+ buff += ((sizeof(INT32) * 3 * MAX_VALUATORS) + sizeof(CARD32)) *
+ v->last_motion;
+
+ memcpy(buff, &ms, sizeof(Time));
+ buff += sizeof(Time);
+
+ memset(buff, 0, sizeof(INT32) * 3 * MAX_VALUATORS);
+
+ for (i = 0; i < v->numAxes; i++)
+ {
+ /* XI1 doesn't support mixed mode devices */
+ if (valuator_get_mode(pDev, i) != valuator_get_mode(pDev, 0))
+ break;
+ if (valuator_mask_size(mask) <= i || !valuator_mask_isset(mask, i))
+ {
+ buff += 3 * sizeof(INT32);
+ continue;
+ }
+ memcpy(buff, &v->axes[i].min_value, sizeof(INT32));
+ buff += sizeof(INT32);
+ memcpy(buff, &v->axes[i].max_value, sizeof(INT32));
+ buff += sizeof(INT32);
+ memcpy(buff, &valuators[i], sizeof(INT32));
+ buff += sizeof(INT32);
+ }
+ } else
+ {
+
+ buff += ((sizeof(INT32) * pDev->valuator->numAxes) + sizeof(CARD32)) *
+ pDev->valuator->last_motion;
+
+ memcpy(buff, &ms, sizeof(Time));
+ buff += sizeof(Time);
+
+ memset(buff, 0, sizeof(INT32) * pDev->valuator->numAxes);
+
+ for (i = 0; i < MAX_VALUATORS; i++)
+ {
+ if (valuator_mask_size(mask) <= i || !valuator_mask_isset(mask, i))
+ {
+ buff += sizeof(INT32);
+ continue;
+ }
+ memcpy(buff, &valuators[i], sizeof(INT32));
+ buff += sizeof(INT32);
+ }
+ }
+
+ pDev->valuator->last_motion = (pDev->valuator->last_motion + 1) %
+ pDev->valuator->numMotionEvents;
+ /* If we're wrapping around, just keep the circular buffer going. */
+ if (pDev->valuator->first_motion == pDev->valuator->last_motion)
+ pDev->valuator->first_motion = (pDev->valuator->first_motion + 1) %
+ pDev->valuator->numMotionEvents;
+
+ return;
+}
+
+
+/**
+ * Returns the maximum number of events GetKeyboardEvents
+ * and GetPointerEvents will ever return.
+ *
+ * This MUST be absolutely constant, from init until exit.
+ */
+int
+GetMaximumEventsNum(void) {
+ /* One raw event
+ * One device event
+ * One possible device changed event
+ */
+ return 3;
+}
+
+
+/**
+ * Clip an axis to its bounds, which are declared in the call to
+ * InitValuatorAxisClassStruct.
+ */
+static void
+clipAxis(DeviceIntPtr pDev, int axisNum, int *val)
+{
+ AxisInfoPtr axis;
+
+ if (axisNum >= pDev->valuator->numAxes)
+ return;
+
+ axis = pDev->valuator->axes + axisNum;
+
+ /* 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, ValuatorMask *mask)
+{
+ int i;
+
+ for (i = 0; i < valuator_mask_size(mask); i++)
+ if (valuator_mask_isset(mask, i))
+ {
+ int val = valuator_mask_get(mask, i);
+ clipAxis(pDev, i, &val);
+ valuator_mask_set(mask, i, val);
+ }
+}
+
+/**
+ * Create the DCCE event (does not update the master's device state yet, this
+ * is done in the event processing).
+ * Pull in the coordinates from the MD if necessary.
+ *
+ * @param events Pointer to a pre-allocated event array.
+ * @param dev The slave device that generated an event.
+ * @param type Either DEVCHANGE_POINTER_EVENT and/or DEVCHANGE_KEYBOARD_EVENT
+ * @param num_events The current number of events, returns the number of
+ * events if a DCCE was generated.
+ * @return The updated @events pointer.
+ */
+InternalEvent*
+UpdateFromMaster(InternalEvent* events, DeviceIntPtr dev, int type, int *num_events)
+{
+ DeviceIntPtr master;
+
+ master = GetMaster(dev, (type & DEVCHANGE_POINTER_EVENT) ? MASTER_POINTER : MASTER_KEYBOARD);
+
+ if (master && master->last.slave != dev)
+ {
+ CreateClassesChangedEvent(events, master, dev, type);
+ if (IsPointerDevice(master))
+ {
+ updateSlaveDeviceCoords(master, dev);
+ master->last.numValuators = dev->last.numValuators;
+ }
+ master->last.slave = dev;
+ (*num_events)++;
+ events++;
+ }
+ return events;
+}
+
+/**
+ * Move the device's pointer to the position given in the valuators.
+ *
+ * @param dev The device which's pointer is to be moved.
+ * @param x Returns the x position of the pointer after the move.
+ * @param y Returns the y position of the pointer after the move.
+ * @param mask Bit mask of valid valuators.
+ * @param valuators Valuator data for each axis between @first and
+ * @first+@num.
+ */
+static void
+moveAbsolute(DeviceIntPtr dev, int *x, int *y, ValuatorMask *mask)
+{
+ int i;
+
+ if (valuator_mask_isset(mask, 0))
+ *x = valuator_mask_get(mask, 0);
+ else
+ *x = dev->last.valuators[0];
+
+ if (valuator_mask_isset(mask, 1))
+ *y = valuator_mask_get(mask, 1);
+ else
+ *y = dev->last.valuators[1];
+
+ clipAxis(dev, 0, x);
+ clipAxis(dev, 1, y);
+
+ for (i = 2; i < valuator_mask_size(mask); i++)
+ {
+ if (valuator_mask_isset(mask, i))
+ {
+ dev->last.valuators[i] = valuator_mask_get(mask, i);
+ clipAxis(dev, i, &dev->last.valuators[i]);
+ }
+ }
+}
+
+/**
+ * Move the device's pointer by the values given in @valuators.
+ *
+ * @param dev The device which's pointer is to be moved.
+ * @param x Returns the x position of the pointer after the move.
+ * @param y Returns the y position of the pointer after the move.
+ * @param mask Bit mask of valid valuators.
+ * @param valuators Valuator data for each axis between @first and
+ * @first+@num.
+ */
+static void
+moveRelative(DeviceIntPtr dev, int *x, int *y, ValuatorMask *mask)
+{
+ int i;
+
+ *x = dev->last.valuators[0];
+ *y = dev->last.valuators[1];
+
+ if (valuator_mask_isset(mask, 0))
+ *x += valuator_mask_get(mask, 0);
+
+ if (valuator_mask_isset(mask, 1))
+ *y += valuator_mask_get(mask, 1);
+
+ /* 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 (dev->valuator && (IsMaster(dev) || !IsFloating(dev))) {
+ if (valuator_get_mode(dev, 0) == Absolute)
+ clipAxis(dev, 0, x);
+ if (valuator_get_mode(dev, 1) == Absolute)
+ clipAxis(dev, 1, y);
+ }
+
+ /* calc other axes, clip, drop back into valuators */
+ for (i = 2; i < valuator_mask_size(mask); i++)
+ {
+ if (valuator_mask_isset(mask, i))
+ {
+ dev->last.valuators[i] += valuator_mask_get(mask, i);
+ if (valuator_get_mode(dev, i) == Absolute)
+ clipAxis(dev, i, &dev->last.valuators[i]);
+ valuator_mask_set(mask, i, dev->last.valuators[i]);
+ }
+ }
+}
+
+/**
+ * Accelerate the data in valuators based on the device's acceleration scheme.
+ *
+ * @param dev The device which's pointer is to be moved.
+ * @param valuators Valuator mask
+ * @param ms Current time.
+ */
+static void
+accelPointer(DeviceIntPtr dev, ValuatorMask* valuators, CARD32 ms)
+{
+ if (dev->valuator->accelScheme.AccelSchemeProc)
+ dev->valuator->accelScheme.AccelSchemeProc(dev, valuators, ms);
+}
+
+/**
+ * If we have HW cursors, this actually moves the visible sprite. If not, we
+ * just do all the screen crossing, etc.
+ *
+ * We scale from device to screen coordinates here, call
+ * miPointerSetPosition() and then scale back into device coordinates (if
+ * needed). miPSP will change x/y if the screen was crossed.
+ *
+ * The coordinates provided are always absolute. The parameter mode whether
+ * it was relative or absolute movement that landed us at those coordinates.
+ *
+ * @param dev The device to be moved.
+ * @param mode Movement mode (Absolute or Relative)
+ * @param x Pointer to current x-axis value, may be modified.
+ * @param y Pointer to current y-axis value, may be modified.
+ * @param x_frac Fractional part of current x-axis value, may be modified.
+ * @param y_frac Fractional part of current y-axis value, may be modified.
+ * @param scr Screen the device's sprite is currently on.
+ * @param screenx Screen x coordinate the sprite is on after the update.
+ * @param screeny Screen y coordinate the sprite is on after the update.
+ * @param screenx_frac Fractional part of screen x coordinate, as above.
+ * @param screeny_frac Fractional part of screen y coordinate, as above.
+ */
+static void
+positionSprite(DeviceIntPtr dev, int mode,
+ int *x, int *y, float x_frac, float y_frac,
+ ScreenPtr scr, int *screenx, int *screeny, float *screenx_frac, float *screeny_frac)
+{
+ int old_screenx, old_screeny;
+
+ /* scale x&y to screen */
+ if (dev->valuator && dev->valuator->numAxes > 0) {
+ *screenx = rescaleValuatorAxis(*x, x_frac, screenx_frac,
+ dev->valuator->axes + 0, NULL, scr->width);
+ } else {
+ *screenx = dev->last.valuators[0];
+ *screenx_frac = dev->last.remainder[0];
+ }
+
+ if (dev->valuator && dev->valuator->numAxes > 1) {
+ *screeny = rescaleValuatorAxis(*y, y_frac, screeny_frac,
+ dev->valuator->axes + 1, NULL, scr->height);
+ } else {
+ *screeny = dev->last.valuators[1];
+ *screeny_frac = dev->last.remainder[1];
+ }
+
+ /* Hit the left screen edge? */
+ if (*screenx <= 0 && *screenx_frac < 0.0f)
+ {
+ *screenx_frac = 0.0f;
+ x_frac = 0.0f;
+ }
+ if (*screeny <= 0 && *screeny_frac < 0.0f)
+ {
+ *screeny_frac = 0.0f;
+ y_frac = 0.0f;
+ }
+
+
+ old_screenx = *screenx;
+ old_screeny = *screeny;
+ /* This takes care of crossing screens for us, as well as clipping
+ * to the current screen. */
+ miPointerSetPosition(dev, mode, screenx, screeny);
+
+ if(!IsMaster(dev) && !IsFloating(dev)) {
+ DeviceIntPtr master = GetMaster(dev, MASTER_POINTER);
+ master->last.valuators[0] = *screenx;
+ master->last.valuators[1] = *screeny;
+ master->last.remainder[0] = *screenx_frac;
+ master->last.remainder[1] = *screeny_frac;
+ }
+
+ if (dev->valuator)
+ {
+ /* Crossed screen? Scale back to device coordiantes */
+ if(*screenx != old_screenx)
+ {
+ scr = miPointerGetScreen(dev);
+ *x = rescaleValuatorAxis(*screenx, *screenx_frac, &x_frac, NULL,
+ dev->valuator->axes + 0, scr->width);
+ }
+ if(*screeny != old_screeny)
+ {
+ scr = miPointerGetScreen(dev);
+ *y = rescaleValuatorAxis(*screeny, *screeny_frac, &y_frac, NULL,
+ dev->valuator->axes + 1, scr->height);
+ }
+ }
+
+ /* dropy x/y (device coordinates) back into valuators for next event */
+ dev->last.valuators[0] = *x;
+ dev->last.valuators[1] = *y;
+ dev->last.remainder[0] = x_frac;
+ dev->last.remainder[1] = y_frac;
+}
+
+/**
+ * Update the motion history for the device and (if appropriate) for its
+ * master device.
+ * @param dev Slave device to update.
+ * @param mask Bit mask of valid valuators to append to history.
+ * @param num Total number of valuators to append to history.
+ * @param ms Current time
+ */
+static void
+updateHistory(DeviceIntPtr dev, ValuatorMask *mask, CARD32 ms)
+{
+ if (!dev->valuator)
+ return;
+
+ updateMotionHistory(dev, ms, mask, dev->last.valuators);
+ if(!IsMaster(dev) && !IsFloating(dev))
+ {
+ DeviceIntPtr master = GetMaster(dev, MASTER_POINTER);
+ updateMotionHistory(master, ms, mask, dev->last.valuators);
+ }
+}
+
+static void
+queueEventList(DeviceIntPtr device, InternalEvent *events, int nevents)
+{
+ int i;
+ for (i = 0; i < nevents; i++)
+ mieqEnqueue(device, &events[i]);
+}
+
+/**
+ * Generate internal events representing this keyboard event and enqueue
+ * them on the event queue.
+ *
+ * This function is not reentrant. Disable signals before calling.
+ *
+ * FIXME: flags for relative/abs motion?
+ *
+ * @param device The device to generate the event for
+ * @param type Event type, one of KeyPress or KeyRelease
+ * @param keycode Key code of the pressed/released key
+ * @param mask Valuator mask for valuators present for this event.
+ *
+ */
+void
+QueueKeyboardEvents(DeviceIntPtr device, int type,
+ int keycode, const ValuatorMask *mask)
+{
+ int nevents;
+
+ nevents = GetKeyboardEvents(InputEventList, device, type, keycode, mask);
+ queueEventList(device, InputEventList, nevents);
+}
+
+/**
+ * Returns a set of InternalEvents for KeyPress/KeyRelease, optionally
+ * also with valuator events.
+ *
+ * The DDX is responsible for allocating the event list in the first
+ * place via InitEventList(), and for freeing it.
+ *
+ * @return the number of events written into events.
+ */
+int
+GetKeyboardEvents(InternalEvent *events, DeviceIntPtr pDev, int type,
+ int key_code, const ValuatorMask *mask_in) {
+ int num_events = 0;
+ CARD32 ms = 0;
+ DeviceEvent *event;
+ RawDeviceEvent *raw;
+ ValuatorMask mask;
+
+ /* refuse events from disabled devices */
+ if (!pDev || !pDev->enabled)
+ return 0;
+
+ if (!events ||!pDev->key || !pDev->focus || !pDev->kbdfeed ||
+ (type != KeyPress && type != KeyRelease) ||
+ (key_code < 8 || key_code > 255))
+ return 0;
+
+ num_events = 1;
+
+ events = UpdateFromMaster(events, pDev, DEVCHANGE_KEYBOARD_EVENT, &num_events);
+
+ /* Handle core repeating, via press/release/press/release. */
+ if (type == KeyPress && key_is_down(pDev, key_code, KEY_POSTED)) {
+ /* 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->xkbInfo->desc->map->modmap[key_code])
+ return 0;
+ }
+
+ ms = GetTimeInMillis();
+
+ raw = &events->raw_event;
+ events++;
+ num_events++;
+
+ valuator_mask_copy(&mask, mask_in);
+
+ init_raw(pDev, raw, ms, type, key_code);
+ set_raw_valuators(raw, &mask, raw->valuators.data_raw);
+
+ clipValuators(pDev, &mask);
+
+ set_raw_valuators(raw, &mask, raw->valuators.data);
+
+ event = &events->device_event;
+ init_event(pDev, event, ms);
+ event->detail.key = key_code;
+
+ if (type == KeyPress) {
+ event->type = ET_KeyPress;
+ set_key_down(pDev, key_code, KEY_POSTED);
+ }
+ else if (type == KeyRelease) {
+ event->type = ET_KeyRelease;
+ set_key_up(pDev, key_code, KEY_POSTED);
+ }
+
+ clipValuators(pDev, &mask);
+
+ set_valuators(pDev, event, &mask);
+
+ return num_events;
+}
+
+/**
+ * Initialize an event array large enough for num_events arrays.
+ * This event list is to be passed into GetPointerEvents() and
+ * GetKeyboardEvents().
+ *
+ * @param num_events Number of elements in list.
+ */
+InternalEvent*
+InitEventList(int num_events)
+{
+ InternalEvent *events = calloc(num_events, sizeof(InternalEvent));
+ return events;
+}
+
+/**
+ * Free an event list.
+ *
+ * @param list The list to be freed.
+ * @param num_events Number of elements in list.
+ */
+void
+FreeEventList(InternalEvent *list, int num_events)
+{
+ free(list);
+}
+
+/**
+ * Transform vector x/y according to matrix m and drop the rounded coords
+ * back into x/y.
+ */
+static void
+transform(struct pixman_f_transform *m, int *x, int *y)
+{
+ struct pixman_f_vector p;
+
+ p.v[0] = *x;
+ p.v[1] = *y;
+ p.v[2] = 1;
+
+ pixman_f_transform_point(m, &p);
+
+
+ *x = lround(p.v[0]);
+ *y = lround(p.v[1]);
+}
+
+static void
+transformAbsolute(DeviceIntPtr dev, ValuatorMask *mask)
+{
+ int x, y, ox, oy;
+
+ ox = x = valuator_mask_isset(mask, 0) ? valuator_mask_get(mask, 0) :
+ dev->last.valuators[0];
+ oy = y = valuator_mask_isset(mask, 1) ? valuator_mask_get(mask, 1) :
+ dev->last.valuators[1];
+
+ transform(&dev->transform, &x, &y);
+
+ if (valuator_mask_isset(mask, 0) || ox != x)
+ valuator_mask_set(mask, 0, x);
+
+ if (valuator_mask_isset(mask, 1) || oy != y)
+ valuator_mask_set(mask, 1, y);
+}
+
+/**
+ * Generate internal events representing this pointer event and enqueue them
+ * on the event queue.
+ *
+ * This function is not reentrant. Disable signals before calling.
+ *
+ * @param device The device to generate the event for
+ * @param type Event type, one of ButtonPress, ButtonRelease, MotionNotify
+ * @param buttons Button number of the buttons modified. Must be 0 for
+ * MotionNotify
+ * @param flags Event modification flags
+ * @param mask Valuator mask for valuators present for this event.
+ */
+void
+QueuePointerEvents(DeviceIntPtr device, int type,
+ int buttons, int flags, const ValuatorMask *mask)
+{
+ int nevents;
+
+ nevents = GetPointerEvents(InputEventList, device, type, buttons, flags, mask);
+ queueEventList(device, InputEventList, nevents);
+}
+
+/**
+ * Generate a series of InternalEvents representing pointer motion, or
+ * button presses.
+ *
+ * The DDX is responsible for allocating the events 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.
+ *
+ * @return the number of events written into events.
+ */
+int
+GetPointerEvents(InternalEvent *events, DeviceIntPtr pDev, int type, int buttons,
+ int flags, const ValuatorMask *mask_in) {
+ int num_events = 1;
+ CARD32 ms;
+ DeviceEvent *event;
+ RawDeviceEvent *raw;
+ int x = 0, y = 0, /* device coords */
+ cx, cy; /* only screen coordinates */
+ float x_frac = 0.0, y_frac = 0.0, cx_frac, cy_frac;
+ ScreenPtr scr = miPointerGetScreen(pDev);
+ ValuatorMask mask;
+
+ /* refuse events from disabled devices */
+ if (!pDev->enabled)
+ return 0;
+
+ if (!scr)
+ return 0;
+
+ switch (type)
+ {
+ case MotionNotify:
+ if (!mask_in || valuator_mask_num_valuators(mask_in) <= 0)
+ return 0;
+ break;
+ case ButtonPress:
+ case ButtonRelease:
+ if (!pDev->button || !buttons)
+ return 0;
+ break;
+ default:
+ return 0;
+ }
+
+ ms = GetTimeInMillis(); /* before pointer update to help precision */
+
+ events = UpdateFromMaster(events, pDev, DEVCHANGE_POINTER_EVENT, &num_events);
+
+ raw = &events->raw_event;
+ events++;
+ num_events++;
+
+ valuator_mask_copy(&mask, mask_in);
+
+ init_raw(pDev, raw, ms, type, buttons);
+ set_raw_valuators(raw, &mask, raw->valuators.data_raw);
+
+ if (flags & POINTER_ABSOLUTE)
+ {
+ if (flags & POINTER_SCREEN) /* valuators are in screen coords */
+ {
+ int scaled;
+
+ if (valuator_mask_isset(&mask, 0))
+ {
+ scaled = rescaleValuatorAxis(valuator_mask_get(&mask, 0),
+ 0.0, &x_frac, NULL,
+ pDev->valuator->axes + 0,
+ scr->width);
+ valuator_mask_set(&mask, 0, scaled);
+ }
+ if (valuator_mask_isset(&mask, 1))
+ {
+ scaled = rescaleValuatorAxis(valuator_mask_get(&mask, 1),
+ 0.0, &y_frac, NULL,
+ pDev->valuator->axes + 1,
+ scr->height);
+ valuator_mask_set(&mask, 1, scaled);
+ }
+ }
+
+ transformAbsolute(pDev, &mask);
+ moveAbsolute(pDev, &x, &y, &mask);
+ } else {
+ if (flags & POINTER_ACCELERATE) {
+ accelPointer(pDev, &mask, ms);
+ /* The pointer acceleration code modifies the fractional part
+ * in-place, so we need to extract this information first */
+ x_frac = pDev->last.remainder[0];
+ y_frac = pDev->last.remainder[1];
+ }
+ moveRelative(pDev, &x, &y, &mask);
+ }
+
+ set_raw_valuators(raw, &mask, raw->valuators.data);
+
+ positionSprite(pDev, (flags & POINTER_ABSOLUTE) ? Absolute : Relative,
+ &x, &y, x_frac, y_frac, scr, &cx, &cy, &cx_frac, &cy_frac);
+ updateHistory(pDev, &mask, ms);
+
+ /* Update the valuators with the true value sent to the client*/
+ if (valuator_mask_isset(&mask, 0))
+ valuator_mask_set(&mask, 0, x);
+ if (valuator_mask_isset(&mask, 1))
+ valuator_mask_set(&mask, 1, y);
+
+ clipValuators(pDev, &mask);
+
+ event = &events->device_event;
+ init_event(pDev, event, ms);
+
+ if (type == MotionNotify) {
+ event->type = ET_Motion;
+ event->detail.button = 0;
+ }
+ else {
+ if (type == ButtonPress) {
+ event->type = ET_ButtonPress;
+ set_button_down(pDev, buttons, BUTTON_POSTED);
+ }
+ else if (type == ButtonRelease) {
+ event->type = ET_ButtonRelease;
+ set_button_up(pDev, buttons, BUTTON_POSTED);
+ }
+ event->detail.button = buttons;
+ }
+
+ event->root_x = cx; /* root_x/y always in screen coords */
+ event->root_y = cy;
+ event->root_x_frac = cx_frac;
+ event->root_y_frac = cy_frac;
+
+ set_valuators(pDev, event, &mask);
+
+ return num_events;
+}
+
+/**
+ * Generate internal events representing this proximity event and enqueue
+ * them on the event queue.
+ *
+ * This function is not reentrant. Disable signals before calling.
+ *
+ * @param device The device to generate the event for
+ * @param type Event type, one of ProximityIn or ProximityOut
+ * @param keycode Key code of the pressed/released key
+ * @param mask Valuator mask for valuators present for this event.
+ *
+ */
+void
+QueueProximityEvents(DeviceIntPtr device, int type,
+ const ValuatorMask *mask)
+{
+ int nevents;
+
+ nevents = GetProximityEvents(InputEventList, device, type, mask);
+ queueEventList(device, InputEventList, nevents);
+}
+
+/**
+ * Generate ProximityIn/ProximityOut InternalEvents, accompanied by
+ * valuators.
+ *
+ * The DDX is responsible for allocating the events in the first place via
+ * InitEventList(), and for freeing it.
+ *
+ * @return the number of events written into events.
+ */
+int
+GetProximityEvents(InternalEvent *events, DeviceIntPtr pDev, int type, const ValuatorMask *mask_in)
+{
+ int num_events = 1, i;
+ DeviceEvent *event;
+ ValuatorMask mask;
+
+ /* refuse events from disabled devices */
+ if (!pDev->enabled)
+ return 0;
+
+ /* Sanity checks. */
+ if ((type != ProximityIn && type != ProximityOut) || !mask_in)
+ return 0;
+ if (!pDev->valuator)
+ return 0;
+
+ valuator_mask_copy(&mask, mask_in);
+
+ /* ignore relative axes for proximity. */
+ for (i = 0; i < valuator_mask_size(&mask); i++)
+ {
+ if (valuator_mask_isset(&mask, i) &&
+ valuator_get_mode(pDev, i) == Relative)
+ valuator_mask_unset(&mask, i);
+ }
+
+ /* FIXME: posting proximity events with relative valuators only results
+ * in an empty event, EventToXI() will fail to convert → no event sent
+ * to client. */
+
+ events = UpdateFromMaster(events, pDev, DEVCHANGE_POINTER_EVENT, &num_events);
+
+ event = &events->device_event;
+ init_event(pDev, event, GetTimeInMillis());
+ event->type = (type == ProximityIn) ? ET_ProximityIn : ET_ProximityOut;
+
+ clipValuators(pDev, &mask);
+
+ set_valuators(pDev, event, &mask);
+
+ return num_events;
+}
+
+/**
+ * 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)
+{
+ DeviceEvent ev;
+
+#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 += screenInfo.screens[0]->x - screenInfo.screens[screen]->x;
+ y += screenInfo.screens[0]->y - screenInfo.screens[screen]->y;
+ }
+#endif
+
+ memset(&ev, 0, sizeof(DeviceEvent));
+ init_event(pDev, &ev, time);
+ ev.root_x = x;
+ ev.root_y = y;
+ ev.type = ET_Motion;
+ ev.time = time;
+
+ /* FIXME: MD/SD considerations? */
+ (*pDev->public.processInputProc)((InternalEvent*)&ev, pDev);
+}
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