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Diffstat (limited to 'xorg-server/dix/getevents.c')
| -rw-r--r-- | xorg-server/dix/getevents.c | 940 |
1 files changed, 940 insertions, 0 deletions
diff --git a/xorg-server/dix/getevents.c b/xorg-server/dix/getevents.c new file mode 100644 index 000000000..1e0edbf00 --- /dev/null +++ b/xorg-server/dix/getevents.c @@ -0,0 +1,940 @@ +/* + * Copyright © 2006 Nokia Corporation + * Copyright © 2006-2007 Daniel Stone + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + * + * Author: Daniel Stone <daniel@fooishbar.org> + */ + +#ifdef HAVE_DIX_CONFIG_H +#include <dix-config.h> +#endif + +#include <X11/X.h> +#include <X11/keysym.h> +#define NEED_EVENTS +#define NEED_REPLIES +#include <X11/Xproto.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" + +#ifdef XKB +#include <X11/extensions/XKBproto.h> +#include <xkbsrv.h> +extern Bool XkbCopyKeymap(XkbDescPtr src, XkbDescPtr dst, Bool sendNotifies); +#endif + +#ifdef PANORAMIX +#include "panoramiX.h" +#include "panoramiXsrv.h" +#endif + +#include <X11/extensions/XI.h> +#include <X11/extensions/XIproto.h> +#include "exglobals.h" +#include "exevents.h" +#include "exglobals.h" +#include "extnsionst.h" + + +/* Maximum number of valuators, divided by six, rounded up, to get number + * of events. */ +#define MAX_VALUATOR_EVENTS 6 + +/* Number of motion history events to store. */ +#define MOTION_HISTORY_SIZE 256 + + +/** + * Pick some arbitrary size for Xi motion history. + */ +_X_EXPORT int +GetMotionHistorySize(void) +{ + return MOTION_HISTORY_SIZE; +} + +static void +set_key_down(DeviceIntPtr pDev, int key_code) +{ + pDev->key->postdown[key_code >> 3] |= (1 << (key_code & 7)); +} + +static void +set_key_up(DeviceIntPtr pDev, int key_code) +{ + pDev->key->postdown[key_code >> 3] &= ~(1 << (key_code & 7)); +} + +static Bool +key_is_down(DeviceIntPtr pDev, int key_code) +{ + return !!(pDev->key->postdown[key_code >> 3] & (1 << (key_code & 7))); +} + +static Bool +key_autorepeats(DeviceIntPtr pDev, int key_code) +{ + return !!(pDev->kbdfeed->ctrl.autoRepeats[key_code >> 3] & + (1 << (key_code & 7))); +} + +/** + * Allocate the motion history buffer. + */ +_X_EXPORT void +AllocateMotionHistory(DeviceIntPtr pDev) +{ + if (pDev->valuator->motion) + xfree(pDev->valuator->motion); + + if (pDev->valuator->numMotionEvents < 1) + return; + + pDev->valuator->motion = xalloc(((sizeof(INT32) * pDev->valuator->numAxes) + + sizeof(Time)) * + pDev->valuator->numMotionEvents); + pDev->valuator->first_motion = 0; + pDev->valuator->last_motion = 0; +} + + +/** + * 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. + */ +_X_EXPORT int +GetMotionHistory(DeviceIntPtr pDev, xTimecoord *buff, unsigned long start, + unsigned long stop, ScreenPtr pScreen) +{ + char *ibuff = NULL, *obuff = (char *) buff; + int i = 0, ret = 0; + Time current; + /* The size of a single motion event. */ + int size = (sizeof(INT32) * pDev->valuator->numAxes) + sizeof(Time); + + if (!pDev->valuator || !pDev->valuator->numMotionEvents) + return 0; + + 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) { + memcpy(obuff, ibuff, size); + obuff += size; + ret++; + } + } + + return ret; +} + + +/** + * Update the motion history for a specific device, with the list of + * valuators. + */ +static void +updateMotionHistory(DeviceIntPtr pDev, CARD32 ms, int first_valuator, + int num_valuators, int *valuators) +{ + char *buff = (char *) pDev->valuator->motion; + + if (!pDev->valuator->numMotionEvents) + return; + + buff += ((sizeof(INT32) * pDev->valuator->numAxes) + sizeof(CARD32)) * + pDev->valuator->last_motion; + memcpy(buff, &ms, sizeof(Time)); + + buff += sizeof(Time); + bzero(buff, sizeof(INT32) * pDev->valuator->numAxes); + + buff += sizeof(INT32) * first_valuator; + memcpy(buff, valuators, sizeof(INT32) * num_valuators); + + 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, + * GetKeyboardValuatorEvents, and GetPointerEvents will ever return. + * + * Should be used in DIX as: + * xEvent *events = xcalloc(sizeof(xEvent), GetMaximumEventsNum()); + * + * This MUST be absolutely constant, from init until exit. + */ +_X_EXPORT int +GetMaximumEventsNum(void) { + /* Two base events -- core and device, plus valuator events. Multiply + * by two if we're doing non-XKB key repeats. */ + int ret = 2 + MAX_VALUATOR_EVENTS; + +#ifdef XKB + if (noXkbExtension) +#endif + ret *= 2; + + return ret; +} + + +/* Originally a part of xf86PostMotionEvent; modifies valuators + * in-place. */ +static void +acceleratePointer(DeviceIntPtr pDev, int first_valuator, int num_valuators, + int *valuators) +{ + float mult = 0.0; + int dx = 0, dy = 0; + int *px = NULL, *py = NULL; + + if (!num_valuators || !valuators) + return; + + if (first_valuator == 0) { + dx = valuators[0]; + px = &valuators[0]; + } + if (first_valuator <= 1 && num_valuators >= (2 - first_valuator)) { + dy = valuators[1 - first_valuator]; + py = &valuators[1 - first_valuator]; + } + + if (!dx && !dy) + return; + + if (pDev->ptrfeed && pDev->ptrfeed->ctrl.num) { + /* modeled from xf86Events.c */ + if (pDev->ptrfeed->ctrl.threshold) { + if ((abs(dx) + abs(dy)) >= pDev->ptrfeed->ctrl.threshold) { + pDev->valuator->dxremaind = ((float)dx * + (float)(pDev->ptrfeed->ctrl.num)) / + (float)(pDev->ptrfeed->ctrl.den) + + pDev->valuator->dxremaind; + if (px) { + *px = (int)pDev->valuator->dxremaind; + pDev->valuator->dxremaind = pDev->valuator->dxremaind - + (float)(*px); + } + + pDev->valuator->dyremaind = ((float)dy * + (float)(pDev->ptrfeed->ctrl.num)) / + (float)(pDev->ptrfeed->ctrl.den) + + pDev->valuator->dyremaind; + if (py) { + *py = (int)pDev->valuator->dyremaind; + pDev->valuator->dyremaind = pDev->valuator->dyremaind - + (float)(*py); + } + } + } + else { + mult = pow((float)dx * (float)dx + (float)dy * (float)dy, + ((float)(pDev->ptrfeed->ctrl.num) / + (float)(pDev->ptrfeed->ctrl.den) - 1.0) / + 2.0) / 2.0; + if (dx) { + pDev->valuator->dxremaind = mult * (float)dx + + pDev->valuator->dxremaind; + *px = (int)pDev->valuator->dxremaind; + pDev->valuator->dxremaind = pDev->valuator->dxremaind - + (float)(*px); + } + if (dy) { + pDev->valuator->dyremaind = mult * (float)dy + + pDev->valuator->dyremaind; + *py = (int)pDev->valuator->dyremaind; + pDev->valuator->dyremaind = pDev->valuator->dyremaind - + (float)(*py); + } + } + } +} + + +/** + * Clip an axis to its bounds, which are declared in the call to + * InitValuatorAxisClassStruct. + */ +static void +clipAxis(DeviceIntPtr pDev, int axisNum, int *val) +{ + AxisInfoPtr axes = pDev->valuator->axes + axisNum; + + /* No clipping if the value-range <= 0 */ + if(axes->min_value < axes->min_value) { + if (*val < axes->min_value) + *val = axes->min_value; + if (*val > axes->max_value) + *val = axes->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. + * + * FIXME: Need to fix ValuatorClassRec to store all the valuators as + * last posted, not just x and y; otherwise relative non-x/y + * valuators, though a very narrow use case, will be broken. + */ +static xEvent * +getValuatorEvents(xEvent *events, DeviceIntPtr pDev, int first_valuator, + int num_valuators, int *valuators) { + deviceValuator *xv = (deviceValuator *) events; + int i = 0, final_valuator = first_valuator + num_valuators; + + for (i = first_valuator; i < final_valuator; i += 6, xv++, events++) { + xv->type = DeviceValuator; + xv->first_valuator = i; + xv->num_valuators = ((final_valuator - i) > 6) ? 6 : (final_valuator - i); + xv->deviceid = pDev->id; + switch (final_valuator - 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]; + } + + if (i + 6 < final_valuator) + xv->deviceid |= MORE_EVENTS; + } + + return events; +} + + +/** + * Convenience wrapper around GetKeyboardValuatorEvents, that takes no + * valuators. + */ +_X_EXPORT int +GetKeyboardEvents(xEvent *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. + * + * 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(xEvent *events, DeviceIntPtr pDev, int type, + int key_code, int first_valuator, + int num_valuators, int *valuators) { + int numEvents = 0; + CARD32 ms = 0; + KeySym *map = pDev->key->curKeySyms.map; + KeySym sym; + deviceKeyButtonPointer *kbp = NULL; + + if (!events) + return 0; + + /* DO NOT WANT */ + if (type != KeyPress && type != KeyRelease) + return 0; + + if (!pDev->key || !pDev->focus || !pDev->kbdfeed || + (pDev->coreEvents && !inputInfo.keyboard->key)) + return 0; + + if (key_code < 8 || key_code > 255) + return 0; + + sym = map[(key_code - pDev->key->curKeySyms.minKeyCode) + * pDev->key->curKeySyms.mapWidth]; + + if (pDev->coreEvents) + numEvents = 2; + else + numEvents = 1; + + 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(); + + if (pDev->coreEvents) { + events->u.keyButtonPointer.time = ms; + events->u.u.type = type; + events->u.u.detail = key_code; + if (type == KeyPress) + set_key_down(inputInfo.keyboard, key_code); + else if (type == KeyRelease) + set_key_up(inputInfo.keyboard, key_code); + events++; + } + + kbp = (deviceKeyButtonPointer *) events; + 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; +} + + +/** + * Generate a series of xEvents (returned in xE) representing pointer + * motion, or button presses. Xi and XKB-aware. + * + * 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 +GetPointerEvents(xEvent *events, DeviceIntPtr pDev, int type, int buttons, + int flags, int first_valuator, int num_valuators, + int *valuators) { + int num_events = 0, final_valuator = 0; + CARD32 ms = 0; + deviceKeyButtonPointer *kbp = NULL; + DeviceIntPtr cp = inputInfo.pointer; + int x = 0, y = 0; + Bool coreOnly = (pDev == inputInfo.pointer); + ScreenPtr scr = miPointerGetScreen(pDev); + + /* Sanity checks. */ + if (type != MotionNotify && type != ButtonPress && type != ButtonRelease) + return 0; + + if ((type == ButtonPress || type == ButtonRelease) && !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 (!coreOnly && pDev->coreEvents) + num_events = 2; + else + num_events = 1; + + if (type == MotionNotify && num_valuators <= 0) + return 0; + + /* Do we need to send a DeviceValuator event? */ + if (!coreOnly && num_valuators) { + if ((((num_valuators - 1) / 6) + 1) > MAX_VALUATOR_EVENTS) + num_valuators = MAX_VALUATOR_EVENTS * 6; + num_events += ((num_valuators - 1) / 6) + 1; + } + + final_valuator = num_valuators + first_valuator; + + /* You fail. */ + if (first_valuator < 0 || final_valuator > pDev->valuator->numAxes) + return 0; + + ms = GetTimeInMillis(); + + /* Set x and y based on whether this is absolute or relative, and + * accelerate if we need to. */ + if (flags & POINTER_ABSOLUTE) { + if (num_valuators >= 1 && first_valuator == 0) { + x = valuators[0]; + } + else { + /* If we're sending core events but didn't provide a value, + * translate the core value (but use the device coord if + * it translates to the same coord to preserve sub-pixel + * coord information). If we're not sending core events use + * whatever value we have */ + x = pDev->valuator->lastx; + if(pDev->coreEvents) { + int min = pDev->valuator->axes[0].min_value; + int max = pDev->valuator->axes[0].max_value; + if(min < max) { + if((int)((float)(x-min)*scr->width/(max-min+1)) != cp->valuator->lastx) + x = (int)((float)(cp->valuator->lastx)*(max-min+1)/scr->width)+min; + } + else + x = cp->valuator->lastx; + } + } + + if (first_valuator <= 1 && num_valuators >= (2 - first_valuator)) { + y = valuators[1 - first_valuator]; + } + else { + y = pDev->valuator->lasty; + if(pDev->coreEvents) { + int min = pDev->valuator->axes[1].min_value; + int max = pDev->valuator->axes[1].max_value; + if(min < max) { + if((int)((float)(y-min)*scr->height/(max-min+1)) != cp->valuator->lasty) + y = (int)((float)(cp->valuator->lasty)*(max-min+1)/scr->height)+min; + } + else + y = cp->valuator->lasty; + } + } + + /* Clip both x and y to the defined limits (usually co-ord space limit). */ + clipAxis(pDev, 0, &x); + clipAxis(pDev, 1, &y); + } + else { + if (flags & POINTER_ACCELERATE) + acceleratePointer(pDev, first_valuator, num_valuators, + valuators); + + if (pDev->coreEvents) { + /* Get and convert the core pointer coordinate space into + * device coordinates. Use the device coords if it translates + * into the same position as the core to preserve relative sub- + * pixel movements from the device. */ + int min = pDev->valuator->axes[0].min_value; + int max = pDev->valuator->axes[0].max_value; + if(min < max) { + x = pDev->valuator->lastx; + if((int)((float)(x-min)*scr->width/(max-min+1)) != cp->valuator->lastx) + x = (int)((float)(cp->valuator->lastx)*(max-min+1)/scr->width)+min; + } + else + x = cp->valuator->lastx; + + min = pDev->valuator->axes[1].min_value; + max = pDev->valuator->axes[1].max_value; + if(min < max) { + y = pDev->valuator->lasty; + if((int)((float)(y-min)*scr->height/(max-min+1)) != cp->valuator->lasty) + y = (int)((float)(cp->valuator->lasty)*(max-min+1)/scr->height)+min; + } + else + y = cp->valuator->lasty; + + /* Add relative movement */ + if (first_valuator == 0 && num_valuators >= 1) + x += valuators[0]; + if (first_valuator <= 1 && num_valuators >= (2 - first_valuator)) + y += valuators[1 - first_valuator]; + } + else { + x = pDev->valuator->lastx; + y = pDev->valuator->lasty; + if (first_valuator == 0 && num_valuators >= 1) + x += valuators[0]; + if (first_valuator <= 1 && num_valuators >= (2 - first_valuator)) + y += valuators[1 - first_valuator]; + + if(!coreOnly) { + /* Since we're not sending core-events we must clip both x and y + * to the defined limits so we don't run outside the box. */ + clipAxis(pDev, 0, &x); + clipAxis(pDev, 1, &y); + } + } + } + + pDev->valuator->lastx = x; + pDev->valuator->lasty = y; + /* Convert the dev coord back to screen coord if we're + * sending core events */ + if (pDev->coreEvents) { + int min = pDev->valuator->axes[0].min_value; + int max = pDev->valuator->axes[0].max_value; + if(min < max) + x = (int)((float)(x-min)*scr->width/(max-min+1)); + cp->valuator->lastx = x; + min = pDev->valuator->axes[1].min_value; + max = pDev->valuator->axes[1].max_value; + if(min < max) + y = (int)((float)(y-min)*scr->height/(max-min+1)); + cp->valuator->lasty = y; + } + + /* 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, &x, &y, ms); + + if (pDev->coreEvents) { + /* miPointerSetPosition may have changed screen */ + scr = miPointerGetScreen(pDev); + if(x != cp->valuator->lastx) { + int min = pDev->valuator->axes[0].min_value; + int max = pDev->valuator->axes[0].max_value; + cp->valuator->lastx = pDev->valuator->lastx = x; + if(min < max) + pDev->valuator->lastx = (int)((float)(x)*(max-min+1)/scr->width)+min; + } + if(y != cp->valuator->lasty) { + int min = pDev->valuator->axes[1].min_value; + int max = pDev->valuator->axes[1].max_value; + cp->valuator->lasty = pDev->valuator->lasty = y; + if(min < max) + pDev->valuator->lasty = (int)((float)(y)*(max-min+1)/scr->height)+min; + } + } + else if (coreOnly) { + cp->valuator->lastx = x; + cp->valuator->lasty = y; + } + + /* Drop x and y back into the valuators list, if they were originally + * present. */ + if (first_valuator == 0 && num_valuators >= 1) + valuators[0] = pDev->valuator->lastx; + if (first_valuator <= 1 && num_valuators >= (2 - first_valuator)) + valuators[1 - first_valuator] = pDev->valuator->lasty; + + updateMotionHistory(pDev, ms, first_valuator, num_valuators, valuators); + + /* for some reason inputInfo.pointer does not have coreEvents set */ + if (coreOnly || pDev->coreEvents) { + events->u.u.type = type; + events->u.keyButtonPointer.time = ms; + events->u.keyButtonPointer.rootX = x; + events->u.keyButtonPointer.rootY = y; + + if (type == ButtonPress || type == ButtonRelease) { + /* We hijack SetPointerMapping to work on all core-sending + * devices, so we use the device-specific map here instead of + * the core one. */ + events->u.u.detail = pDev->button->map[buttons]; + } + else { + events->u.u.detail = 0; + } + + events++; + } + + if (!coreOnly) { + kbp = (deviceKeyButtonPointer *) events; + 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 = pDev->button->map[buttons]; + } + + kbp->root_x = pDev->valuator->lastx; + kbp->root_y = pDev->valuator->lasty; + + 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 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(xEvent *events, DeviceIntPtr pDev, int type, + int first_valuator, int num_valuators, int *valuators) +{ + int num_events = 1; + deviceKeyButtonPointer *kbp = (deviceKeyButtonPointer *) events; + + /* 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; + + 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 device to send a core event. This function + * copies the complete keymap from the originating device to the core + * device, and makes sure the appropriate notifications are generated. + * + * Call this just before processInputProc. + */ +_X_EXPORT void +SwitchCoreKeyboard(DeviceIntPtr pDev) +{ + KeyClassPtr ckeyc = inputInfo.keyboard->key; + int i = 0; + + if (pDev != dixLookupPrivate(&inputInfo.keyboard->devPrivates, + CoreDevicePrivateKey)) { + memcpy(ckeyc->modifierMap, pDev->key->modifierMap, MAP_LENGTH); + if (ckeyc->modifierKeyMap) + xfree(ckeyc->modifierKeyMap); + ckeyc->modifierKeyMap = xalloc(8 * pDev->key->maxKeysPerModifier); + memcpy(ckeyc->modifierKeyMap, pDev->key->modifierKeyMap, + (8 * pDev->key->maxKeysPerModifier)); + + ckeyc->maxKeysPerModifier = pDev->key->maxKeysPerModifier; + ckeyc->curKeySyms.minKeyCode = pDev->key->curKeySyms.minKeyCode; + ckeyc->curKeySyms.maxKeyCode = pDev->key->curKeySyms.maxKeyCode; + SetKeySymsMap(&ckeyc->curKeySyms, &pDev->key->curKeySyms); + + /* + * Copy state from the extended keyboard to core. If you omit this, + * holding Ctrl on keyboard one, and pressing Q on keyboard two, will + * cause your app to quit. This feels wrong to me, hence the below + * code. + * + * XXX: If you synthesise core modifier events, the state will get + * clobbered here. You'll have to work out something sensible + * to fix that. Good luck. + */ + +#define KEYBOARD_MASK (ShiftMask | LockMask | ControlMask | Mod1Mask | \ + Mod2Mask | Mod3Mask | Mod4Mask | Mod5Mask) + ckeyc->state &= ~(KEYBOARD_MASK); + ckeyc->state |= (pDev->key->state & KEYBOARD_MASK); +#undef KEYBOARD_MASK + for (i = 0; i < 8; i++) + ckeyc->modifierKeyCount[i] = pDev->key->modifierKeyCount[i]; + +#ifdef XKB + if (!noXkbExtension && pDev->key->xkbInfo && pDev->key->xkbInfo->desc) { + if (!XkbCopyKeymap(pDev->key->xkbInfo->desc, ckeyc->xkbInfo->desc, + True)) + FatalError("Couldn't pivot keymap from device to core!\n"); + } +#endif + + SendMappingNotify(MappingKeyboard, ckeyc->curKeySyms.minKeyCode, + (ckeyc->curKeySyms.maxKeyCode - + ckeyc->curKeySyms.minKeyCode), + serverClient); + dixSetPrivate(&inputInfo.keyboard->devPrivates, CoreDevicePrivateKey, + pDev); + } +} + + +/** + * 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(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; + + (*inputInfo.pointer->public.processInputProc)(&xE, inputInfo.pointer, 1); +} |