/* * 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 <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 "exglobals.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 container list for all input events generated by the * DDX. The DDX is expected to call GetEventList() and then pass the list into * Get{Pointer|Keyboard}Events. */ EventListPtr InputEventList = NULL; int InputEventListLen = 0; int GetEventList(EventListPtr* list) { *list = InputEventList; return InputEventListLen; } /** * 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) { int ret = 0; if (type & BUTTON_PROCESSED) ret |= !!BitIsOn(pDev->button->down, button); if (type & BUTTON_POSTED) 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) { int ret = 0; if (type & KEY_PROCESSED) ret |= !!BitIsOn(pDev->key->down, key_code); if (type & KEY_POSTED) 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, int first, int num, int *valuators, int32_t* data) { int i; for (i = first; i < first + num; i++) SetBit(event->valuators.mask, i); memcpy(&data[first], valuators, num * sizeof(uint32_t)); } static void set_valuators(DeviceIntPtr dev, DeviceEvent* event, int first_valuator, int num_valuators, int *valuators) { int i; for (i = first_valuator; i < first_valuator + num_valuators; i++) { SetBit(event->valuators.mask, i); if (dev->valuator->mode == Absolute) SetBit(event->valuators.mode, i); event->valuators.data_frac[i] = dev->last.remainder[i] * (1 << 16) * (1 << 16); } memcpy(&event->valuators.data[first_valuator], valuators, num_valuators * sizeof(uint32_t)); } void CreateClassesChangedEvent(EventList* event, DeviceIntPtr master, DeviceIntPtr slave, int type) { int i; DeviceChangedEvent *dce; CARD32 ms = GetTimeInMillis(); dce = (DeviceChangedEvent*)event->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; /* This should, eventually, be a per-axis mode */ dce->valuators[i].mode = slave->valuator->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 size = sizeof(INT32) * pDev->valuator->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 (first_valuator > 0): * min_val == max_val == val == 0. */ static void updateMotionHistory(DeviceIntPtr pDev, CARD32 ms, int first_valuator, int num_valuators, 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); buff += 3 * sizeof(INT32) * first_valuator; for (i = first_valuator; i < first_valuator + num_valuators; i++) { if (i >= v->numAxes) break; 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 - first_valuator], 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); 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. * * 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, int first_valuator, int num_valuators, int *valuators) { int i; for (i = 0; i < num_valuators; i++) clipAxis(pDev, i + first_valuator, &(valuators[i])); } /** * 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 list. * @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. */ EventListPtr UpdateFromMaster(EventListPtr 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 first The first valuator in @valuators * @param num Total number of valuators in @valuators. * @param valuators Valuator data for each axis between @first and * @first+@num. */ static void moveAbsolute(DeviceIntPtr dev, int *x, int *y, int first, int num, int *valuators) { int i; if (num >= 1 && first == 0) *x = *(valuators + 0); else *x = dev->last.valuators[0]; if (first <= 1 && num >= (2 - first)) *y = *(valuators + 1 - first); else *y = dev->last.valuators[1]; clipAxis(dev, 0, x); clipAxis(dev, 1, y); i = (first > 2) ? 0 : 2; for (; i < num; i++) { dev->last.valuators[i + first] = valuators[i]; clipAxis(dev, i, &dev->last.valuators[i + first]); } } /** * 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 first The first valuator in @valuators * @param num Total number of valuators in @valuators. * @param valuators Valuator data for each axis between @first and * @first+@num. */ static void moveRelative(DeviceIntPtr dev, int *x, int *y, int first, int num, int *valuators) { int i; *x = dev->last.valuators[0]; *y = dev->last.valuators[1]; if (num >= 1 && first == 0) *x += *(valuators +0); if (first <= 1 && num >= (2 - first)) *y += *(valuators + 1 - first); /* 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->u.master && dev->valuator->mode == Absolute) { clipAxis(dev, 0, x); clipAxis(dev, 1, y); } /* calc other axes, clip, drop back into valuators */ i = (first > 2) ? 0 : 2; for (; i < num; i++) { dev->last.valuators[i + first] += valuators[i]; if (dev->valuator->mode == Absolute) clipAxis(dev, i, &dev->last.valuators[i + first]); valuators[i] = dev->last.valuators[i + first]; } } /** * Accelerate the data in valuators based on the device's acceleration scheme. * * @param dev The device which's pointer is to be moved. * @param first The first valuator in @valuators * @param num Total number of valuators in @valuators. * @param valuators Valuator data for each axis between @first and * @first+@num. * @param ms Current time. */ static void accelPointer(DeviceIntPtr dev, int first, int num, int *valuators, CARD32 ms) { if (dev->valuator->accelScheme.AccelSchemeProc) dev->valuator->accelScheme.AccelSchemeProc(dev, first, num, 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. * * @param dev The device to be moved. * @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 *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->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->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, screenx, screeny); if (dev->u.master) { dev->u.master->last.valuators[0] = *screenx; dev->u.master->last.valuators[1] = *screeny; dev->u.master->last.remainder[0] = *screenx_frac; dev->u.master->last.remainder[1] = *screeny_frac; } /* 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 first First valuator to append to history. * @param num Total number of valuators to append to history. * @param ms Current time */ static void updateHistory(DeviceIntPtr dev, int first, int num, CARD32 ms) { updateMotionHistory(dev, ms, first, num, &dev->last.valuators[first]); if (dev->u.master) { DeviceIntPtr master = GetMaster(dev, MASTER_POINTER); updateMotionHistory(master, ms, first, num, &dev->last.valuators[first]); } } /** * Convenience wrapper around GetKeyboardValuatorEvents, that takes no * valuators. */ int GetKeyboardEvents(EventList *events, DeviceIntPtr pDev, int type, int key_code) { return GetKeyboardValuatorEvents(events, pDev, type, key_code, 0, 0, NULL); } /** * Returns a set of keyboard events for KeyPress/KeyRelease, optionally * also with valuator events. Handles Xi and XKB. * * DOES NOT GENERATE CORE EVENTS! Core events are created when processing the * event (ProcessOtherEvent). * * events is not NULL-terminated; the return value is the number of events. * The DDX is responsible for allocating the event structure in the first * place via GetMaximumEventsNum(), and for freeing it. * * This function does not change the core keymap to that of the device; * that is done by SwitchCoreKeyboard, which is called from * mieqProcessInputEvents. If replacing that function, take care to call * SetCoreKeyboard before processInputProc, so keymaps are altered to suit. */ int GetKeyboardValuatorEvents(EventList *events, DeviceIntPtr pDev, int type, int key_code, int first_valuator, int num_valuators, int *valuators_in) { int num_events = 0; CARD32 ms = 0; DeviceEvent *event; RawDeviceEvent *raw; int valuators[MAX_VALUATORS]; /* refuse events from disabled devices */ if (!pDev->enabled) return 0; if (!events ||!pDev->key || !pDev->focus || !pDev->kbdfeed || num_valuators > MAX_VALUATORS || (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 = (RawDeviceEvent*)events->event; events++; num_events++; memcpy(valuators, valuators_in, num_valuators * sizeof(int)); init_raw(pDev, raw, ms, type, key_code); set_raw_valuators(raw, first_valuator, num_valuators, valuators, raw->valuators.data_raw); if (num_valuators) clipValuators(pDev, first_valuator, num_valuators, valuators); set_raw_valuators(raw, first_valuator, num_valuators, valuators, raw->valuators.data); event = (DeviceEvent*) events->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); } if (num_valuators) clipValuators(pDev, first_valuator, num_valuators, valuators); set_valuators(pDev, event, first_valuator, num_valuators, valuators); return num_events; } /** * Initialize an event list and fill with 32 byte sized events. * This event list is to be passed into GetPointerEvents() and * GetKeyboardEvents(). * * @param num_events Number of elements in list. */ EventListPtr InitEventList(int num_events) { EventListPtr events; int i; events = (EventListPtr)calloc(num_events, sizeof(EventList)); if (!events) return NULL; for (i = 0; i < num_events; i++) { events[i].evlen = sizeof(InternalEvent); events[i].event = calloc(1, sizeof(InternalEvent)); if (!events[i].event) { /* rollback */ while(i--) free(events[i].event); free(events); events = NULL; break; } } return events; } /** * Free an event list. * * @param list The list to be freed. * @param num_events Number of elements in list. */ void FreeEventList(EventListPtr list, int num_events) { if (!list) return; while(num_events--) free(list[num_events].event); free(list); } static void transformAbsolute(DeviceIntPtr dev, int v[MAX_VALUATORS]) { struct pixman_f_vector p; /* p' = M * p in homogeneous coordinates */ p.v[0] = v[0]; p.v[1] = v[1]; p.v[2] = 1.0; pixman_f_transform_point(&dev->transform, &p); v[0] = lround(p.v[0]); v[1] = lround(p.v[1]); } /** * Generate a series of xEvents (filled into the EventList) representing * pointer motion, or button presses. Xi and XKB-aware. * * DOES NOT GENERATE CORE EVENTS! Core events are created when processing the * event (ProcessOtherEvent). * * events is not NULL-terminated; the return value is the number of events. * The DDX is responsible for allocating the event structure in the first * place via InitEventList() and GetMaximumEventsNum(), and for freeing it. * * In the generated events rootX/Y will be in absolute screen coords and * the valuator information in the absolute or relative device coords. * * last.valuators[x] of the device is always in absolute device coords. * last.valuators[x] of the master device is in absolute screen coords. * * master->last.valuators[x] for x > 2 is undefined. */ int GetPointerEvents(EventList *events, DeviceIntPtr pDev, int type, int buttons, int flags, int first_valuator, int num_valuators, int *valuators_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); int valuators[MAX_VALUATORS]; /* refuse events from disabled devices */ if (!pDev->enabled) return 0; ms = GetTimeInMillis(); /* before pointer update to help precision */ if (!scr || !pDev->valuator || first_valuator < 0 || num_valuators > MAX_VALUATORS || ((num_valuators + first_valuator) > pDev->valuator->numAxes) || (type != MotionNotify && type != ButtonPress && type != ButtonRelease) || (type != MotionNotify && !pDev->button) || ((type == ButtonPress || type == ButtonRelease) && !buttons) || (type == MotionNotify && num_valuators <= 0)) return 0; events = UpdateFromMaster(events, pDev, DEVCHANGE_POINTER_EVENT, &num_events); raw = (RawDeviceEvent*)events->event; events++; num_events++; memcpy(valuators, valuators_in, num_valuators * sizeof(int)); init_raw(pDev, raw, ms, type, buttons); set_raw_valuators(raw, first_valuator, num_valuators, valuators, raw->valuators.data_raw); if (flags & POINTER_ABSOLUTE) { if (flags & POINTER_SCREEN) /* valuators are in screen coords */ { if (num_valuators >= 1 && first_valuator == 0) valuators[0] = rescaleValuatorAxis(valuators[0], 0.0, &x_frac, NULL, pDev->valuator->axes + 0, scr->width); if (first_valuator <= 1 && num_valuators >= (2 - first_valuator)) valuators[1 - first_valuator] = rescaleValuatorAxis(valuators[1 - first_valuator], 0.0, &y_frac, NULL, pDev->valuator->axes + 1, scr->height); } transformAbsolute(pDev, valuators); moveAbsolute(pDev, &x, &y, first_valuator, num_valuators, valuators); } else { if (flags & POINTER_ACCELERATE) { accelPointer(pDev, first_valuator, num_valuators, valuators, 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, first_valuator, num_valuators, valuators); } set_raw_valuators(raw, first_valuator, num_valuators, valuators, raw->valuators.data); positionSprite(pDev, &x, &y, x_frac, y_frac, scr, &cx, &cy, &cx_frac, &cy_frac); updateHistory(pDev, first_valuator, num_valuators, ms); /* Update the valuators with the true value sent to the client*/ if (num_valuators >= 1 && first_valuator == 0) valuators[0] = x; if (first_valuator <= 1 && num_valuators >= (2 - first_valuator)) valuators[1 - first_valuator] = y; if (num_valuators) clipValuators(pDev, first_valuator, num_valuators, valuators); event = (DeviceEvent*) events->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, 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. */ int GetProximityEvents(EventList *events, DeviceIntPtr pDev, int type, int first_valuator, int num_valuators, int *valuators_in) { int num_events = 1; DeviceEvent *event; int valuators[MAX_VALUATORS]; /* refuse events from disabled devices */ if (!pDev->enabled) return 0; /* 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; /* You fail. */ if (first_valuator < 0 || num_valuators > MAX_VALUATORS || (num_valuators + first_valuator) > pDev->valuator->numAxes) return 0; events = UpdateFromMaster(events, pDev, DEVCHANGE_POINTER_EVENT, &num_events); event = (DeviceEvent *) events->event; init_event(pDev, event, GetTimeInMillis()); event->type = (type == ProximityIn) ? ET_ProximityIn : ET_ProximityOut; if (num_valuators) { memcpy(valuators, valuators_in, num_valuators * sizeof(int)); clipValuators(pDev, first_valuator, num_valuators, valuators); } set_valuators(pDev, event, first_valuator, num_valuators, valuators); 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); }