/* * Copyright © 1999 Henry Davies * Copyright © 2001 Stefan Gmeiner * Copyright © 2002 S. Lehner * Copyright © 2002 Peter Osterlund * Copyright © 2002 Linuxcare Inc. David Kennedy * Copyright © 2003 Hartwig Felger * Copyright © 2003 Jörg Bösner * Copyright © 2003 Fred Hucht * Copyright © 2004 Alexei Gilchrist * Copyright © 2004 Matthias Ihmig * Copyright © 2006 Stefan Bethge * Copyright © 2006 Christian Thaeter * Copyright © 2007 Joseph P. Skudlarek * Copyright © 2008 Fedor P. Goncharov * Copyright © 2008-2012 Red Hat, Inc. * Copyright © 2011 The Chromium OS Authors * * Permission to use, copy, modify, distribute, and sell this software * and its documentation for any purpose is hereby granted without * fee, provided that the above copyright notice appear in all copies * and that both that copyright notice and this permission notice * appear in supporting documentation, and that the name of Red Hat * not be used in advertising or publicity pertaining to distribution * of the software without specific, written prior permission. Red * Hat makes no representations about the suitability of this software * for any purpose. It is provided "as is" without express or implied * warranty. * * THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN * NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. * * Authors: * Joseph P. Skudlarek * Christian Thaeter * Stefan Bethge * Matthias Ihmig * Alexei Gilchrist * Jörg Bösner * Hartwig Felger * Peter Osterlund * S. Lehner * Stefan Gmeiner * Henry Davies for the * Linuxcare Inc. David Kennedy * Fred Hucht * Fedor P. Goncharov * Simon Thum * * Trademarks are the property of their respective owners. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include "synapticsstr.h" #include "synaptics-properties.h" enum EdgeType { NO_EDGE = 0, BOTTOM_EDGE = 1, TOP_EDGE = 2, LEFT_EDGE = 4, RIGHT_EDGE = 8, LEFT_BOTTOM_EDGE = BOTTOM_EDGE | LEFT_EDGE, RIGHT_BOTTOM_EDGE = BOTTOM_EDGE | RIGHT_EDGE, RIGHT_TOP_EDGE = TOP_EDGE | RIGHT_EDGE, LEFT_TOP_EDGE = TOP_EDGE | LEFT_EDGE }; /* * We expect to be receiving a steady 80 packets/sec (which gives 40 * reports/sec with more than one finger on the pad, as Advanced Gesture Mode * requires two PS/2 packets per report). Instead of a random scattering of * magic 13 and 20ms numbers scattered throughout the driver, introduce * POLL_MS as 14ms, which is slightly less than 80Hz. 13ms is closer to * 80Hz, but if the kernel event reporting was even slightly delayed, * we would produce synthetic motion followed immediately by genuine * motion, so use 14. * * We use this to call back at a constant rate to at least produce the * illusion of smooth motion. It works a lot better than you'd expect. */ #define POLL_MS 14 #define MAX(a, b) (((a)>(b))?(a):(b)) #define MIN(a, b) (((a)<(b))?(a):(b)) #define TIME_DIFF(a, b) ((int)((a)-(b))) #define SQR(x) ((x) * (x)) #ifndef M_PI #define M_PI 3.14159265358979323846 #endif #define INPUT_BUFFER_SIZE 200 /***************************************************************************** * Forward declaration ****************************************************************************/ static int SynapticsPreInit(InputDriverPtr drv, InputInfoPtr pInfo, int flags); static void SynapticsUnInit(InputDriverPtr drv, InputInfoPtr pInfo, int flags); static Bool DeviceControl(DeviceIntPtr, int); static void ReadInput(InputInfoPtr); static int HandleState(InputInfoPtr, struct SynapticsHwState *, CARD32 now, Bool from_timer); static int ControlProc(InputInfoPtr, xDeviceCtl *); static int SwitchMode(ClientPtr, DeviceIntPtr, int); static int DeviceInit(DeviceIntPtr); static int DeviceOn(DeviceIntPtr); static int DeviceOff(DeviceIntPtr); static int DeviceClose(DeviceIntPtr); static Bool QueryHardware(InputInfoPtr); static void ReadDevDimensions(InputInfoPtr); static void ScaleCoordinates(SynapticsPrivate * priv, struct SynapticsHwState *hw); static void CalculateScalingCoeffs(SynapticsPrivate * priv); static void SanitizeDimensions(InputInfoPtr pInfo); void InitDeviceProperties(InputInfoPtr pInfo); int SetProperty(DeviceIntPtr dev, Atom property, XIPropertyValuePtr prop, BOOL checkonly); const static struct { const char *name; struct SynapticsProtocolOperations *proto_ops; } protocols[] = { #ifdef BUILD_EVENTCOMM { "event", &event_proto_operations }, #endif #ifdef BUILD_PSMCOMM { "psm", &psm_proto_operations }, #endif #ifdef BUILD_PS2COMM { "psaux", &psaux_proto_operations }, { "alps", &alps_proto_operations }, #endif { NULL, NULL } }; InputDriverRec SYNAPTICS = { 1, "synaptics", NULL, SynapticsPreInit, SynapticsUnInit, NULL, }; static XF86ModuleVersionInfo VersionRec = { "synaptics", MODULEVENDORSTRING, MODINFOSTRING1, MODINFOSTRING2, XORG_VERSION_CURRENT, PACKAGE_VERSION_MAJOR, PACKAGE_VERSION_MINOR, PACKAGE_VERSION_PATCHLEVEL, ABI_CLASS_XINPUT, ABI_XINPUT_VERSION, MOD_CLASS_XINPUT, {0, 0, 0, 0} }; static pointer SetupProc(pointer module, pointer options, int *errmaj, int *errmin) { xf86AddInputDriver(&SYNAPTICS, module, 0); return module; } _X_EXPORT XF86ModuleData synapticsModuleData = { &VersionRec, &SetupProc, NULL }; /***************************************************************************** * Function Definitions ****************************************************************************/ /** * Fill in default dimensions for backends that cannot query the hardware. * Eventually, we want the edges to be 1900/5400 for x, 1900/4000 for y. * These values are based so that calculate_edge_widths() will give us the * right values. * * The default values 1900, etc. come from the dawn of time, when men where * men, or possibly apes. */ static void SanitizeDimensions(InputInfoPtr pInfo) { SynapticsPrivate *priv = (SynapticsPrivate *) pInfo->private; if (priv->minx >= priv->maxx) { priv->minx = 1615; priv->maxx = 5685; priv->resx = 0; xf86IDrvMsg(pInfo, X_PROBED, "invalid x-axis range. defaulting to %d - %d\n", priv->minx, priv->maxx); } if (priv->miny >= priv->maxy) { priv->miny = 1729; priv->maxy = 4171; priv->resy = 0; xf86IDrvMsg(pInfo, X_PROBED, "invalid y-axis range. defaulting to %d - %d\n", priv->miny, priv->maxy); } if (priv->minp >= priv->maxp) { priv->minp = 0; priv->maxp = 255; xf86IDrvMsg(pInfo, X_PROBED, "invalid pressure range. defaulting to %d - %d\n", priv->minp, priv->maxp); } if (priv->minw >= priv->maxw) { priv->minw = 0; priv->maxw = 15; xf86IDrvMsg(pInfo, X_PROBED, "invalid finger width range. defaulting to %d - %d\n", priv->minw, priv->maxw); } } static Bool SetDeviceAndProtocol(InputInfoPtr pInfo) { SynapticsPrivate *priv = pInfo->private; char *proto, *device; int i; proto = xf86SetStrOption(pInfo->options, "Protocol", NULL); device = xf86SetStrOption(pInfo->options, "Device", NULL); /* If proto is auto-dev, unset and let the code do the rest */ if (proto && !strcmp(proto, "auto-dev")) { free(proto); proto = NULL; } for (i = 0; protocols[i].name; i++) { if ((!device || !proto) && protocols[i].proto_ops->AutoDevProbe && protocols[i].proto_ops->AutoDevProbe(pInfo, device)) break; else if (proto && !strcmp(proto, protocols[i].name)) break; } free(proto); free(device); priv->proto_ops = protocols[i].proto_ops; return (priv->proto_ops != NULL); } static void calculate_edge_widths(SynapticsPrivate * priv, int *l, int *r, int *t, int *b) { int width, height; int ewidth, eheight; /* edge width/height */ width = abs(priv->maxx - priv->minx); height = abs(priv->maxy - priv->miny); if (priv->model == MODEL_SYNAPTICS) { ewidth = width * .07; eheight = height * .07; } else if (priv->model == MODEL_ALPS) { ewidth = width * .15; eheight = height * .15; } else if (priv->model == MODEL_APPLETOUCH || priv->model == MODEL_UNIBODY_MACBOOK) { ewidth = width * .085; eheight = height * .085; } else { ewidth = width * .04; eheight = height * .054; } *l = priv->minx + ewidth; *r = priv->maxx - ewidth; *t = priv->miny + eheight; *b = priv->maxy - eheight; } static void calculate_tap_hysteresis(SynapticsPrivate * priv, int range, int *fingerLow, int *fingerHigh) { switch (priv->model) { case MODEL_ELANTECH: /* All Elantech touchpads don't need the Z filtering to get the * number of fingers correctly. See Documentation/elantech.txt * in the kernel. */ *fingerLow = priv->minp + 1; *fingerHigh = priv->minp + 1; break; case MODEL_UNIBODY_MACBOOK: *fingerLow = 70; *fingerHigh = 75; break; default: *fingerLow = priv->minp + range * (25.0 / 256); *fingerHigh = priv->minp + range * (30.0 / 256); break; } } /* Area options support both percent values and absolute values. This is * awkward. The xf86Set* calls will print to the log, but they'll * also print an error if we request a percent value but only have an * int. So - check first for percent, then call xf86Set* again to get * the log message. */ static int set_percent_option(pointer options, const char *optname, const int range, const int offset, const int default_value) { int result; double percent = xf86CheckPercentOption(options, optname, -1); if (percent >= 0.0) { percent = xf86SetPercentOption(options, optname, -1); result = percent / 100.0 * range + offset; } else result = xf86SetIntOption(options, optname, default_value); return result; } Bool SynapticsIsSoftButtonAreasValid(int *values) { Bool right_disabled = FALSE; Bool middle_disabled = FALSE; enum { /* right button left, right, top, bottom */ RBL = 0, RBR = 1, RBT = 2, RBB = 3, /* middle button left, right, top, bottom */ MBL = 4, MBR = 5, MBT = 6, MBB = 7, }; /* Check right button area */ if ((((values[RBL] != 0) && (values[RBR] != 0)) && (values[RBL] > values[RBR])) || (((values[RBT] != 0) && (values[RBB] != 0)) && (values[RBT] > values[RBB]))) return FALSE; /* Check middle button area */ if ((((values[MBL] != 0) && (values[MBR] != 0)) && (values[MBL] > values[MBR])) || (((values[MBT] != 0) && (values[MBB] != 0)) && (values[MBT] > values[MBB]))) return FALSE; if (values[RBL] == 0 && values[RBR] == 0 && values[RBT] == 0 && values[RBB] == 0) right_disabled = TRUE; if (values[MBL] == 0 && values[MBR] == 0 && values[MBT] == 0 && values[MBB] == 0) middle_disabled = TRUE; if (!right_disabled && ((values[RBL] && values[RBL] == values[RBR]) || (values[RBT] && values[RBT] == values[RBB]))) return FALSE; if (!middle_disabled && ((values[MBL] && values[MBL] == values[MBR]) || (values[MBT] && values[MBT] == values[MBB]))) return FALSE; /* Check for overlapping button areas */ if (!right_disabled && !middle_disabled) { int right_left = values[RBL] ? values[RBL] : INT_MIN; int right_right = values[RBR] ? values[RBR] : INT_MAX; int right_top = values[RBT] ? values[RBT] : INT_MIN; int right_bottom = values[RBB] ? values[RBB] : INT_MAX; int middle_left = values[MBL] ? values[MBL] : INT_MIN; int middle_right = values[MBR] ? values[MBR] : INT_MAX; int middle_top = values[MBT] ? values[MBT] : INT_MIN; int middle_bottom = values[MBB] ? values[MBB] : INT_MAX; /* If areas overlap in the Y axis */ if ((right_bottom <= middle_bottom && right_bottom >= middle_top) || (right_top <= middle_bottom && right_top >= middle_top)) { /* Check for overlapping left edges */ if ((right_left < middle_left && right_right > middle_left) || (middle_left < right_left && middle_right > right_left)) return FALSE; /* Check for overlapping right edges */ if ((right_right > middle_right && right_left < middle_right) || (middle_right > right_right && middle_left < right_right)) return FALSE; } /* If areas overlap in the X axis */ if ((right_left >= middle_left && right_left <= middle_right) || (right_right >= middle_left && right_right <= middle_right)) { /* Check for overlapping top edges */ if ((right_top < middle_top && right_bottom > middle_top) || (middle_top < right_top && middle_bottom > right_top)) return FALSE; /* Check for overlapping bottom edges */ if ((right_bottom > middle_bottom && right_top < middle_bottom) || (middle_bottom > right_bottom && middle_top < right_bottom)) return FALSE; } } return TRUE; } static void set_softbutton_areas_option(InputInfoPtr pInfo) { SynapticsPrivate *priv = pInfo->private; SynapticsParameters *pars = &priv->synpara; int values[8]; int in_percent = 0; /* bitmask for which ones are in % */ char *option_string; char *next_num; char *end_str; int i; int width, height; if (!pars->clickpad) return; option_string = xf86SetStrOption(pInfo->options, "SoftButtonAreas", NULL); if (!option_string) return; next_num = option_string; for (i = 0; i < 8 && *next_num != '\0'; i++) { long int value = strtol(next_num, &end_str, 0); if (value > INT_MAX || value < -INT_MAX) goto fail; values[i] = value; if (next_num != end_str) { if (end_str && *end_str == '%') { in_percent |= 1 << i; end_str++; } next_num = end_str; } else goto fail; } if (i < 8 || *next_num != '\0') goto fail; width = priv->maxx - priv->minx; height = priv->maxy - priv->miny; for (i = 0; in_percent && i < 8; i++) { int base, size; if ((in_percent & (1 << i)) == 0 || values[i] == 0) continue; size = ((i % 4) < 2) ? width : height; base = ((i % 4) < 2) ? priv->minx : priv->miny; values[i] = base + size * values[i] / 100.0; } if (!SynapticsIsSoftButtonAreasValid(values)) goto fail; memcpy(pars->softbutton_areas[0], values, 4 * sizeof(int)); memcpy(pars->softbutton_areas[1], values + 4, 4 * sizeof(int)); free(option_string); return; fail: xf86IDrvMsg(pInfo, X_ERROR, "invalid SoftButtonAreas value '%s', keeping defaults\n", option_string); free(option_string); } static void set_default_parameters(InputInfoPtr pInfo) { SynapticsPrivate *priv = pInfo->private; /* read-only */ pointer opts = pInfo->options; /* read-only */ SynapticsParameters *pars = &priv->synpara; /* modified */ int horizScrollDelta, vertScrollDelta; /* pixels */ int tapMove; /* pixels */ int l, r, t, b; /* left, right, top, bottom */ double accelFactor; /* 1/pixels */ int fingerLow, fingerHigh; /* pressure */ int emulateTwoFingerMinZ; /* pressure */ int emulateTwoFingerMinW; /* width */ int pressureMotionMinZ, pressureMotionMaxZ; /* pressure */ int palmMinWidth, palmMinZ; /* pressure */ int tapButton1, tapButton2, tapButton3; int clickFinger1, clickFinger2, clickFinger3; Bool vertEdgeScroll, horizEdgeScroll; Bool vertTwoFingerScroll, horizTwoFingerScroll; int horizResolution = 1; int vertResolution = 1; int width, height, diag, range; int horizHyst, vertHyst; int middle_button_timeout; /* The synaptics specs specify typical edge widths of 4% on x, and 5.4% on * y (page 7) [Synaptics TouchPad Interfacing Guide, 510-000080 - A * Second Edition, http://www.synaptics.com/support/dev_support.cfm, 8 Sep * 2008]. We use 7% for both instead for synaptics devices, and 15% for * ALPS models. * http://bugs.freedesktop.org/show_bug.cgi?id=21214 * * If the range was autodetected, apply these edge widths to all four * sides. */ width = abs(priv->maxx - priv->minx); height = abs(priv->maxy - priv->miny); diag = sqrt(width * width + height * height); calculate_edge_widths(priv, &l, &r, &t, &b); /* Again, based on typical x/y range and defaults */ horizScrollDelta = diag * .020; vertScrollDelta = diag * .020; tapMove = diag * .044; accelFactor = 200.0 / diag; /* trial-and-error */ /* hysteresis, assume >= 0 is a detected value (e.g. evdev fuzz) */ horizHyst = pars->hyst_x >= 0 ? pars->hyst_x : diag * 0.005; vertHyst = pars->hyst_y >= 0 ? pars->hyst_y : diag * 0.005; range = priv->maxp - priv->minp + 1; calculate_tap_hysteresis(priv, range, &fingerLow, &fingerHigh); /* scaling based on defaults and a pressure of 256 */ emulateTwoFingerMinZ = priv->minp + range * (282.0 / 256); pressureMotionMinZ = priv->minp + range * (30.0 / 256); pressureMotionMaxZ = priv->minp + range * (160.0 / 256); palmMinZ = priv->minp + range * (200.0 / 256); range = priv->maxw - priv->minw + 1; /* scaling based on defaults below and a tool width of 16 */ palmMinWidth = priv->minw + range * (10.0 / 16); emulateTwoFingerMinW = priv->minw + range * (7.0 / 16); /* Enable tap if we don't have a phys left button */ tapButton1 = priv->has_left ? 0 : 1; tapButton2 = priv->has_left ? 0 : 3; tapButton3 = priv->has_left ? 0 : 2; /* Enable multifinger-click if only have one physical button, otherwise clickFinger is always button 1. */ clickFinger1 = 1; clickFinger2 = (priv->has_right || priv->has_middle) ? 1 : 3; clickFinger3 = (priv->has_right || priv->has_middle) ? 1 : 2; /* Enable vert edge scroll if we can't detect doubletap */ vertEdgeScroll = priv->has_double ? FALSE : TRUE; horizEdgeScroll = FALSE; /* Enable twofinger scroll if we can detect doubletap */ vertTwoFingerScroll = priv->has_double ? TRUE : FALSE; horizTwoFingerScroll = FALSE; /* Use resolution reported by hardware if available */ if ((priv->resx > 0) && (priv->resy > 0)) { horizResolution = priv->resx; vertResolution = priv->resy; } /* set the parameters */ pars->left_edge = xf86SetIntOption(opts, "LeftEdge", l); pars->right_edge = xf86SetIntOption(opts, "RightEdge", r); pars->top_edge = xf86SetIntOption(opts, "TopEdge", t); pars->bottom_edge = xf86SetIntOption(opts, "BottomEdge", b); pars->area_top_edge = set_percent_option(opts, "AreaTopEdge", height, priv->miny, 0); pars->area_bottom_edge = set_percent_option(opts, "AreaBottomEdge", height, priv->miny, 0); pars->area_left_edge = set_percent_option(opts, "AreaLeftEdge", width, priv->minx, 0); pars->area_right_edge = set_percent_option(opts, "AreaRightEdge", width, priv->minx, 0); pars->hyst_x = set_percent_option(opts, "HorizHysteresis", width, 0, horizHyst); pars->hyst_y = set_percent_option(opts, "VertHysteresis", height, 0, vertHyst); pars->finger_low = xf86SetIntOption(opts, "FingerLow", fingerLow); pars->finger_high = xf86SetIntOption(opts, "FingerHigh", fingerHigh); pars->tap_time = xf86SetIntOption(opts, "MaxTapTime", 180); pars->tap_move = xf86SetIntOption(opts, "MaxTapMove", tapMove); pars->tap_time_2 = xf86SetIntOption(opts, "MaxDoubleTapTime", 180); pars->click_time = xf86SetIntOption(opts, "ClickTime", 100); pars->clickpad = xf86SetBoolOption(opts, "ClickPad", pars->clickpad); /* Probed */ /* middle mouse button emulation on a clickpad? nah, you're joking */ middle_button_timeout = pars->clickpad ? 0 : 75; pars->emulate_mid_button_time = xf86SetIntOption(opts, "EmulateMidButtonTime", middle_button_timeout); pars->emulate_twofinger_z = xf86SetIntOption(opts, "EmulateTwoFingerMinZ", emulateTwoFingerMinZ); pars->emulate_twofinger_w = xf86SetIntOption(opts, "EmulateTwoFingerMinW", emulateTwoFingerMinW); pars->scroll_dist_vert = xf86SetIntOption(opts, "VertScrollDelta", vertScrollDelta); pars->scroll_dist_horiz = xf86SetIntOption(opts, "HorizScrollDelta", horizScrollDelta); pars->scroll_edge_vert = xf86SetBoolOption(opts, "VertEdgeScroll", vertEdgeScroll); pars->scroll_edge_horiz = xf86SetBoolOption(opts, "HorizEdgeScroll", horizEdgeScroll); pars->scroll_edge_corner = xf86SetBoolOption(opts, "CornerCoasting", FALSE); pars->scroll_twofinger_vert = xf86SetBoolOption(opts, "VertTwoFingerScroll", vertTwoFingerScroll); pars->scroll_twofinger_horiz = xf86SetBoolOption(opts, "HorizTwoFingerScroll", horizTwoFingerScroll); pars->touchpad_off = xf86SetIntOption(opts, "TouchpadOff", TOUCHPAD_ON); pars->locked_drags = xf86SetBoolOption(opts, "LockedDrags", FALSE); pars->locked_drag_time = xf86SetIntOption(opts, "LockedDragTimeout", 5000); pars->tap_action[RT_TAP] = xf86SetIntOption(opts, "RTCornerButton", 0); pars->tap_action[RB_TAP] = xf86SetIntOption(opts, "RBCornerButton", 0); pars->tap_action[LT_TAP] = xf86SetIntOption(opts, "LTCornerButton", 0); pars->tap_action[LB_TAP] = xf86SetIntOption(opts, "LBCornerButton", 0); pars->tap_action[F1_TAP] = xf86SetIntOption(opts, "TapButton1", tapButton1); pars->tap_action[F2_TAP] = xf86SetIntOption(opts, "TapButton2", tapButton2); pars->tap_action[F3_TAP] = xf86SetIntOption(opts, "TapButton3", tapButton3); pars->click_action[F1_CLICK1] = xf86SetIntOption(opts, "ClickFinger1", clickFinger1); pars->click_action[F2_CLICK1] = xf86SetIntOption(opts, "ClickFinger2", clickFinger2); pars->click_action[F3_CLICK1] = xf86SetIntOption(opts, "ClickFinger3", clickFinger3); pars->circular_scrolling = xf86SetBoolOption(opts, "CircularScrolling", FALSE); pars->circular_trigger = xf86SetIntOption(opts, "CircScrollTrigger", 0); pars->palm_detect = xf86SetBoolOption(opts, "PalmDetect", FALSE); pars->palm_min_width = xf86SetIntOption(opts, "PalmMinWidth", palmMinWidth); pars->palm_min_z = xf86SetIntOption(opts, "PalmMinZ", palmMinZ); pars->single_tap_timeout = xf86SetIntOption(opts, "SingleTapTimeout", 180); pars->press_motion_min_z = xf86SetIntOption(opts, "PressureMotionMinZ", pressureMotionMinZ); pars->press_motion_max_z = xf86SetIntOption(opts, "PressureMotionMaxZ", pressureMotionMaxZ); pars->min_speed = xf86SetRealOption(opts, "MinSpeed", 0.4); pars->max_speed = xf86SetRealOption(opts, "MaxSpeed", 0.7); pars->accl = xf86SetRealOption(opts, "AccelFactor", accelFactor); pars->scroll_dist_circ = xf86SetRealOption(opts, "CircScrollDelta", 0.1); pars->coasting_speed = xf86SetRealOption(opts, "CoastingSpeed", 20.0); pars->coasting_friction = xf86SetRealOption(opts, "CoastingFriction", 50); pars->press_motion_min_factor = xf86SetRealOption(opts, "PressureMotionMinFactor", 1.0); pars->press_motion_max_factor = xf86SetRealOption(opts, "PressureMotionMaxFactor", 1.0); pars->grab_event_device = xf86SetBoolOption(opts, "GrabEventDevice", TRUE); pars->tap_and_drag_gesture = xf86SetBoolOption(opts, "TapAndDragGesture", TRUE); pars->resolution_horiz = xf86SetIntOption(opts, "HorizResolution", horizResolution); pars->resolution_vert = xf86SetIntOption(opts, "VertResolution", vertResolution); /* Warn about (and fix) incorrectly configured TopEdge/BottomEdge parameters */ if (pars->top_edge > pars->bottom_edge) { int tmp = pars->top_edge; pars->top_edge = pars->bottom_edge; pars->bottom_edge = tmp; xf86IDrvMsg(pInfo, X_WARNING, "TopEdge is bigger than BottomEdge. Fixing.\n"); } set_softbutton_areas_option(pInfo); } static double SynapticsAccelerationProfile(DeviceIntPtr dev, DeviceVelocityPtr vel, double velocity, double thr, double acc) { InputInfoPtr pInfo = dev->public.devicePrivate; SynapticsPrivate *priv = (SynapticsPrivate *) (pInfo->private); SynapticsParameters *para = &priv->synpara; double accelfct; /* * synaptics accel was originally base on device coordinate based * velocity, which we recover this way so para->accl retains its scale. */ velocity /= vel->const_acceleration; /* speed up linear with finger velocity */ accelfct = velocity * para->accl; /* clip acceleration factor */ if (accelfct > para->max_speed * acc) accelfct = para->max_speed * acc; else if (accelfct < para->min_speed) accelfct = para->min_speed; /* modify speed according to pressure */ if (priv->moving_state == MS_TOUCHPAD_RELATIVE) { int minZ = para->press_motion_min_z; int maxZ = para->press_motion_max_z; double minFctr = para->press_motion_min_factor; double maxFctr = para->press_motion_max_factor; if (priv->hwState->z <= minZ) { accelfct *= minFctr; } else if (priv->hwState->z >= maxZ) { accelfct *= maxFctr; } else { accelfct *= minFctr + (priv->hwState->z - minZ) * (maxFctr - minFctr) / (maxZ - minZ); } } return accelfct; } static int SynapticsPreInit(InputDriverPtr drv, InputInfoPtr pInfo, int flags) { SynapticsPrivate *priv; /* allocate memory for SynapticsPrivateRec */ priv = calloc(1, sizeof(SynapticsPrivate)); if (!priv) return BadAlloc; pInfo->type_name = XI_TOUCHPAD; pInfo->device_control = DeviceControl; pInfo->read_input = ReadInput; pInfo->control_proc = ControlProc; pInfo->switch_mode = SwitchMode; pInfo->private = priv; /* allocate now so we don't allocate in the signal handler */ priv->timer = TimerSet(NULL, 0, 0, NULL, NULL); if (!priv->timer) { free(priv); return BadAlloc; } /* may change pInfo->options */ if (!SetDeviceAndProtocol(pInfo)) { xf86IDrvMsg(pInfo, X_ERROR, "Synaptics driver unable to detect protocol\n"); goto SetupProc_fail; } priv->device = xf86FindOptionValue(pInfo->options, "Device"); /* open the touchpad device */ pInfo->fd = xf86OpenSerial(pInfo->options); if (pInfo->fd == -1) { xf86IDrvMsg(pInfo, X_ERROR, "Synaptics driver unable to open device\n"); goto SetupProc_fail; } xf86ErrorFVerb(6, "port opened successfully\n"); /* initialize variables */ priv->count_packet_finger = 0; priv->tap_state = TS_START; priv->tap_button = 0; priv->tap_button_state = TBS_BUTTON_UP; priv->touch_on.millis = 0; priv->synpara.hyst_x = -1; priv->synpara.hyst_y = -1; /* read hardware dimensions */ ReadDevDimensions(pInfo); set_default_parameters(pInfo); CalculateScalingCoeffs(priv); priv->comm.buffer = XisbNew(pInfo->fd, INPUT_BUFFER_SIZE); if (!QueryHardware(pInfo)) { xf86IDrvMsg(pInfo, X_ERROR, "Unable to query/initialize Synaptics hardware.\n"); goto SetupProc_fail; } xf86ProcessCommonOptions(pInfo, pInfo->options); if (pInfo->fd != -1) { if (priv->comm.buffer) { XisbFree(priv->comm.buffer); priv->comm.buffer = NULL; } xf86CloseSerial(pInfo->fd); } pInfo->fd = -1; return Success; SetupProc_fail: if (pInfo->fd >= 0) { xf86CloseSerial(pInfo->fd); pInfo->fd = -1; } if (priv->comm.buffer) XisbFree(priv->comm.buffer); free(priv->proto_data); free(priv->timer); free(priv); pInfo->private = NULL; return BadAlloc; } /* * Uninitialize the device. */ static void SynapticsUnInit(InputDriverPtr drv, InputInfoPtr pInfo, int flags) { SynapticsPrivate *priv = ((SynapticsPrivate *) pInfo->private); if (priv && priv->timer) free(priv->timer); if (priv && priv->proto_data) free(priv->proto_data); if (priv && priv->scroll_events_mask) valuator_mask_free(&priv->scroll_events_mask); if (priv && priv->open_slots) free(priv->open_slots); free(pInfo->private); pInfo->private = NULL; xf86DeleteInput(pInfo, 0); } /* * Alter the control parameters for the mouse. Note that all special * protocol values are handled by dix. */ static void SynapticsCtrl(DeviceIntPtr device, PtrCtrl * ctrl) { } static int DeviceControl(DeviceIntPtr dev, int mode) { Bool RetValue; switch (mode) { case DEVICE_INIT: RetValue = DeviceInit(dev); break; case DEVICE_ON: RetValue = DeviceOn(dev); break; case DEVICE_OFF: RetValue = DeviceOff(dev); break; case DEVICE_CLOSE: RetValue = DeviceClose(dev); break; default: RetValue = BadValue; } return RetValue; } static int DeviceOn(DeviceIntPtr dev) { InputInfoPtr pInfo = dev->public.devicePrivate; SynapticsPrivate *priv = (SynapticsPrivate *) (pInfo->private); DBG(3, "Synaptics DeviceOn called\n"); pInfo->fd = xf86OpenSerial(pInfo->options); if (pInfo->fd == -1) { xf86IDrvMsg(pInfo, X_WARNING, "cannot open input device\n"); return !Success; } if (priv->proto_ops->DeviceOnHook && !priv->proto_ops->DeviceOnHook(pInfo, &priv->synpara)) return !Success; priv->comm.buffer = XisbNew(pInfo->fd, INPUT_BUFFER_SIZE); if (!priv->comm.buffer) { xf86CloseSerial(pInfo->fd); pInfo->fd = -1; return !Success; } xf86FlushInput(pInfo->fd); /* reinit the pad */ if (!QueryHardware(pInfo)) { XisbFree(priv->comm.buffer); priv->comm.buffer = NULL; xf86CloseSerial(pInfo->fd); pInfo->fd = -1; return !Success; } xf86AddEnabledDevice(pInfo); dev->public.on = TRUE; return Success; } static void SynapticsReset(SynapticsPrivate * priv) { SynapticsResetHwState(priv->hwState); SynapticsResetHwState(priv->local_hw_state); SynapticsResetHwState(priv->old_hw_state); SynapticsResetHwState(priv->comm.hwState); memset(priv->move_hist, 0, sizeof(priv->move_hist)); priv->hyst_center_x = 0; priv->hyst_center_y = 0; memset(&priv->scroll, 0, sizeof(priv->scroll)); priv->count_packet_finger = 0; priv->finger_state = FS_UNTOUCHED; priv->last_motion_millis = 0; priv->tap_state = TS_START; priv->tap_button = 0; priv->tap_button_state = TBS_BUTTON_UP; priv->moving_state = MS_FALSE; priv->vert_scroll_edge_on = FALSE; priv->horiz_scroll_edge_on = FALSE; priv->vert_scroll_twofinger_on = FALSE; priv->horiz_scroll_twofinger_on = FALSE; priv->circ_scroll_on = FALSE; priv->circ_scroll_vert = FALSE; priv->mid_emu_state = MBE_OFF; priv->lastButtons = 0; priv->prev_z = 0; priv->prevFingers = 0; priv->num_active_touches = 0; memset(priv->open_slots, 0, priv->num_slots * sizeof(int)); } static int DeviceOff(DeviceIntPtr dev) { InputInfoPtr pInfo = dev->public.devicePrivate; SynapticsPrivate *priv = (SynapticsPrivate *) (pInfo->private); Bool rc = Success; DBG(3, "Synaptics DeviceOff called\n"); if (pInfo->fd != -1) { TimerCancel(priv->timer); xf86RemoveEnabledDevice(pInfo); SynapticsReset(priv); if (priv->proto_ops->DeviceOffHook && !priv->proto_ops->DeviceOffHook(pInfo)) rc = !Success; if (priv->comm.buffer) { XisbFree(priv->comm.buffer); priv->comm.buffer = NULL; } xf86CloseSerial(pInfo->fd); pInfo->fd = -1; } dev->public.on = FALSE; return rc; } static int DeviceClose(DeviceIntPtr dev) { Bool RetValue; InputInfoPtr pInfo = dev->public.devicePrivate; SynapticsPrivate *priv = (SynapticsPrivate *) pInfo->private; RetValue = DeviceOff(dev); TimerFree(priv->timer); priv->timer = NULL; free(priv->touch_axes); priv->touch_axes = NULL; SynapticsHwStateFree(&priv->hwState); SynapticsHwStateFree(&priv->old_hw_state); SynapticsHwStateFree(&priv->local_hw_state); SynapticsHwStateFree(&priv->comm.hwState); return RetValue; } static void InitAxesLabels(Atom *labels, int nlabels, const SynapticsPrivate * priv) { int i; memset(labels, 0, nlabels * sizeof(Atom)); switch (nlabels) { default: case 4: labels[3] = XIGetKnownProperty(AXIS_LABEL_PROP_REL_VSCROLL); case 3: labels[2] = XIGetKnownProperty(AXIS_LABEL_PROP_REL_HSCROLL); case 2: labels[1] = XIGetKnownProperty(AXIS_LABEL_PROP_REL_Y); case 1: labels[0] = XIGetKnownProperty(AXIS_LABEL_PROP_REL_X); break; } for (i = 0; i < priv->num_mt_axes; i++) { SynapticsTouchAxisRec *axis = &priv->touch_axes[i]; int axnum = nlabels - priv->num_mt_axes + i; labels[axnum] = XIGetKnownProperty(axis->label); } } static void InitButtonLabels(Atom *labels, int nlabels) { memset(labels, 0, nlabels * sizeof(Atom)); switch (nlabels) { default: case 7: labels[6] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_HWHEEL_RIGHT); case 6: labels[5] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_HWHEEL_LEFT); case 5: labels[4] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_WHEEL_DOWN); case 4: labels[3] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_WHEEL_UP); case 3: labels[2] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_RIGHT); case 2: labels[1] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_MIDDLE); case 1: labels[0] = XIGetKnownProperty(BTN_LABEL_PROP_BTN_LEFT); break; } } static void DeviceInitTouch(DeviceIntPtr dev, Atom *axes_labels) { InputInfoPtr pInfo = dev->public.devicePrivate; SynapticsPrivate *priv = (SynapticsPrivate *) (pInfo->private); int i; if (priv->has_touch) { priv->num_slots = priv->max_touches ? priv->max_touches : SYNAPTICS_MAX_TOUCHES; priv->open_slots = malloc(priv->num_slots * sizeof(int)); if (!priv->open_slots) { xf86IDrvMsg(pInfo, X_ERROR, "failed to allocate open touch slots array\n"); priv->has_touch = 0; priv->num_slots = 0; return; } /* x/y + whatever other MT axes we found */ if (!InitTouchClassDeviceStruct(dev, priv->max_touches, XIDependentTouch, 2 + priv->num_mt_axes)) { xf86IDrvMsg(pInfo, X_ERROR, "failed to initialize touch class device\n"); priv->has_touch = 0; priv->num_slots = 0; free(priv->open_slots); priv->open_slots = NULL; return; } for (i = 0; i < priv->num_mt_axes; i++) { SynapticsTouchAxisRec *axis = &priv->touch_axes[i]; int axnum = 4 + i; /* Skip x, y, and scroll axes */ if (!xf86InitValuatorAxisStruct(dev, axnum, axes_labels[axnum], axis->min, axis->max, axis->res, 0, axis->res, Absolute)) { xf86IDrvMsg(pInfo, X_WARNING, "failed to initialize axis %s, skipping\n", axis->label); continue; } xf86InitValuatorDefaults(dev, axnum); } } } static int DeviceInit(DeviceIntPtr dev) { InputInfoPtr pInfo = dev->public.devicePrivate; SynapticsPrivate *priv = (SynapticsPrivate *) (pInfo->private); Atom float_type, prop; float tmpf; unsigned char map[SYN_MAX_BUTTONS + 1]; int i; int min, max; int num_axes = 2; Atom btn_labels[SYN_MAX_BUTTONS] = { 0 }; Atom *axes_labels; DeviceVelocityPtr pVel; num_axes += 2; num_axes += priv->num_mt_axes; axes_labels = calloc(num_axes, sizeof(Atom)); if (!axes_labels) { xf86IDrvMsg(pInfo, X_ERROR, "failed to allocate axis labels\n"); return !Success; } InitAxesLabels(axes_labels, num_axes, priv); InitButtonLabels(btn_labels, SYN_MAX_BUTTONS); DBG(3, "Synaptics DeviceInit called\n"); for (i = 0; i <= SYN_MAX_BUTTONS; i++) map[i] = i; dev->public.on = FALSE; InitPointerDeviceStruct((DevicePtr) dev, map, SYN_MAX_BUTTONS, btn_labels, SynapticsCtrl, GetMotionHistorySize(), num_axes, axes_labels); /* * setup dix acceleration to match legacy synaptics settings, and * etablish a device-specific profile to do stuff like pressure-related * acceleration. */ if (NULL != (pVel = GetDevicePredictableAccelData(dev))) { SetDeviceSpecificAccelerationProfile(pVel, SynapticsAccelerationProfile); /* float property type */ float_type = XIGetKnownProperty(XATOM_FLOAT); /* translate MinAcc to constant deceleration. * May be overridden in xf86InitValuatorDefaults */ tmpf = 1.0 / priv->synpara.min_speed; xf86IDrvMsg(pInfo, X_CONFIG, "(accel) MinSpeed is now constant deceleration " "%.1f\n", tmpf); prop = XIGetKnownProperty(ACCEL_PROP_CONSTANT_DECELERATION); XIChangeDeviceProperty(dev, prop, float_type, 32, PropModeReplace, 1, &tmpf, FALSE); /* adjust accordingly */ priv->synpara.max_speed /= priv->synpara.min_speed; priv->synpara.min_speed = 1.0; /* synaptics seems to report 80 packet/s, but dix scales for * 100 packet/s by default. */ pVel->corr_mul = 12.5f; /*1000[ms]/80[/s] = 12.5 */ xf86IDrvMsg(pInfo, X_CONFIG, "(accel) MaxSpeed is now %.2f\n", priv->synpara.max_speed); xf86IDrvMsg(pInfo, X_CONFIG, "(accel) AccelFactor is now %.3f\n", priv->synpara.accl); prop = XIGetKnownProperty(ACCEL_PROP_PROFILE_NUMBER); i = AccelProfileDeviceSpecific; XIChangeDeviceProperty(dev, prop, XA_INTEGER, 32, PropModeReplace, 1, &i, FALSE); } /* X valuator */ if (priv->minx < priv->maxx) { min = priv->minx; max = priv->maxx; } else { min = 0; max = -1; } xf86InitValuatorAxisStruct(dev, 0, axes_labels[0], min, max, priv->resx * 1000, 0, priv->resx * 1000, Relative); xf86InitValuatorDefaults(dev, 0); /* Y valuator */ if (priv->miny < priv->maxy) { min = priv->miny; max = priv->maxy; } else { min = 0; max = -1; } xf86InitValuatorAxisStruct(dev, 1, axes_labels[1], min, max, priv->resy * 1000, 0, priv->resy * 1000, Relative); xf86InitValuatorDefaults(dev, 1); xf86InitValuatorAxisStruct(dev, 2, axes_labels[2], 0, -1, 0, 0, 0, Relative); priv->scroll_axis_horiz = 2; xf86InitValuatorAxisStruct(dev, 3, axes_labels[3], 0, -1, 0, 0, 0, Relative); priv->scroll_axis_vert = 3; priv->scroll_events_mask = valuator_mask_new(MAX_VALUATORS); if (!priv->scroll_events_mask) { free(axes_labels); return !Success; } SetScrollValuator(dev, priv->scroll_axis_horiz, SCROLL_TYPE_HORIZONTAL, priv->synpara.scroll_dist_horiz, 0); SetScrollValuator(dev, priv->scroll_axis_vert, SCROLL_TYPE_VERTICAL, priv->synpara.scroll_dist_vert, 0); DeviceInitTouch(dev, axes_labels); free(axes_labels); priv->hwState = SynapticsHwStateAlloc(priv); if (!priv->hwState) goto fail; priv->old_hw_state = SynapticsHwStateAlloc(priv); if (!priv->old_hw_state) goto fail; priv->local_hw_state = SynapticsHwStateAlloc(priv); if (!priv->local_hw_state) goto fail; priv->comm.hwState = SynapticsHwStateAlloc(priv); InitDeviceProperties(pInfo); XIRegisterPropertyHandler(pInfo->dev, SetProperty, NULL, NULL); return Success; fail: free(priv->local_hw_state); free(priv->hwState); free(priv->open_slots); return !Success; } /* return angle of point relative to center */ static double angle(SynapticsPrivate * priv, int x, int y) { double xCenter = (priv->synpara.left_edge + priv->synpara.right_edge) / 2.0; double yCenter = (priv->synpara.top_edge + priv->synpara.bottom_edge) / 2.0; return atan2(-(y - yCenter), x - xCenter); } /* return angle difference */ static double diffa(double a1, double a2) { double da = fmod(a2 - a1, 2 * M_PI); if (da < 0) da += 2 * M_PI; if (da > M_PI) da -= 2 * M_PI; return da; } static enum EdgeType edge_detection(SynapticsPrivate * priv, int x, int y) { enum EdgeType edge = NO_EDGE; if (x > priv->synpara.right_edge) edge |= RIGHT_EDGE; else if (x < priv->synpara.left_edge) edge |= LEFT_EDGE; if (y < priv->synpara.top_edge) edge |= TOP_EDGE; else if (y > priv->synpara.bottom_edge) edge |= BOTTOM_EDGE; return edge; } /* Checks whether coordinates are in the Synaptics Area * or not. If no Synaptics Area is defined (i.e. if * priv->synpara.area_{left|right|top|bottom}_edge are * all set to zero), the function returns TRUE. */ static Bool is_inside_active_area(SynapticsPrivate * priv, int x, int y) { Bool inside_area = TRUE; if ((priv->synpara.area_left_edge != 0) && (x < priv->synpara.area_left_edge)) inside_area = FALSE; else if ((priv->synpara.area_right_edge != 0) && (x > priv->synpara.area_right_edge)) inside_area = FALSE; if ((priv->synpara.area_top_edge != 0) && (y < priv->synpara.area_top_edge)) inside_area = FALSE; else if ((priv->synpara.area_bottom_edge != 0) && (y > priv->synpara.area_bottom_edge)) inside_area = FALSE; return inside_area; } static Bool is_inside_button_area(SynapticsParameters * para, int which, int x, int y) { Bool inside_area = TRUE; enum { LEFT = 0, RIGHT = 1, TOP = 2, BOTTOM = 3 }; if (para->softbutton_areas[which][LEFT] == 0 && para->softbutton_areas[which][RIGHT] == 0 && para->softbutton_areas[which][TOP] == 0 && para->softbutton_areas[which][BOTTOM] == 0) return FALSE; if (para->softbutton_areas[which][LEFT] && x < para->softbutton_areas[which][LEFT]) inside_area = FALSE; else if (para->softbutton_areas[which][RIGHT] && x > para->softbutton_areas[which][RIGHT]) inside_area = FALSE; else if (para->softbutton_areas[which][TOP] && y < para->softbutton_areas[which][TOP]) inside_area = FALSE; else if (para->softbutton_areas[which][BOTTOM] && y > para->softbutton_areas[which][BOTTOM]) inside_area = FALSE; return inside_area; } static Bool is_inside_rightbutton_area(SynapticsParameters * para, int x, int y) { return is_inside_button_area(para, 0, x, y); } static Bool is_inside_middlebutton_area(SynapticsParameters * para, int x, int y) { return is_inside_button_area(para, 1, x, y); } static CARD32 timerFunc(OsTimerPtr timer, CARD32 now, pointer arg) { InputInfoPtr pInfo = arg; SynapticsPrivate *priv = (SynapticsPrivate *) (pInfo->private); struct SynapticsHwState *hw = priv->local_hw_state; int delay; int sigstate; sigstate = xf86BlockSIGIO(); priv->hwState->millis += now - priv->timer_time; SynapticsCopyHwState(hw, priv->hwState); SynapticsResetTouchHwState(hw, FALSE); delay = HandleState(pInfo, hw, hw->millis, TRUE); priv->timer_time = now; priv->timer = TimerSet(priv->timer, 0, delay, timerFunc, pInfo); xf86UnblockSIGIO(sigstate); return 0; } static int clamp(int val, int min, int max) { if (val < min) return min; else if (val < max) return val; else return max; } static Bool SynapticsGetHwState(InputInfoPtr pInfo, SynapticsPrivate * priv, struct SynapticsHwState *hw) { return priv->proto_ops->ReadHwState(pInfo, &priv->comm, hw); } /* * called for each full received packet from the touchpad */ static void ReadInput(InputInfoPtr pInfo) { SynapticsPrivate *priv = (SynapticsPrivate *) (pInfo->private); struct SynapticsHwState *hw = priv->local_hw_state; int delay = 0; Bool newDelay = FALSE; SynapticsResetTouchHwState(hw, FALSE); while (SynapticsGetHwState(pInfo, priv, hw)) { /* Semi-mt device touch slots do not track touches. When there is a * change in the number of touches, we must disregard the temporary * motion changes. */ if (priv->has_semi_mt && hw->numFingers != priv->hwState->numFingers) { hw->cumulative_dx = priv->hwState->cumulative_dx; hw->cumulative_dy = priv->hwState->cumulative_dy; } /* timer may cause actual events to lag behind (#48777) */ if (priv->hwState->millis > hw->millis) hw->millis = priv->hwState->millis; SynapticsCopyHwState(priv->hwState, hw); delay = HandleState(pInfo, hw, hw->millis, FALSE); newDelay = TRUE; } if (newDelay) { priv->timer_time = GetTimeInMillis(); priv->timer = TimerSet(priv->timer, 0, delay, timerFunc, pInfo); } } static int HandleMidButtonEmulation(SynapticsPrivate * priv, struct SynapticsHwState *hw, CARD32 now, int *delay) { SynapticsParameters *para = &priv->synpara; Bool done = FALSE; int timeleft; int mid = 0; if (para->emulate_mid_button_time <= 0) return mid; while (!done) { switch (priv->mid_emu_state) { case MBE_LEFT_CLICK: case MBE_RIGHT_CLICK: case MBE_OFF: priv->button_delay_millis = now; if (hw->left) { priv->mid_emu_state = MBE_LEFT; } else if (hw->right) { priv->mid_emu_state = MBE_RIGHT; } else { done = TRUE; } break; case MBE_LEFT: timeleft = TIME_DIFF(priv->button_delay_millis + para->emulate_mid_button_time, now); if (timeleft > 0) *delay = MIN(*delay, timeleft); /* timeout, but within the same ReadInput cycle! */ if ((timeleft <= 0) && !hw->left) { priv->mid_emu_state = MBE_LEFT_CLICK; done = TRUE; } else if ((!hw->left) || (timeleft <= 0)) { hw->left = TRUE; priv->mid_emu_state = MBE_TIMEOUT; done = TRUE; } else if (hw->right) { priv->mid_emu_state = MBE_MID; } else { hw->left = FALSE; done = TRUE; } break; case MBE_RIGHT: timeleft = TIME_DIFF(priv->button_delay_millis + para->emulate_mid_button_time, now); if (timeleft > 0) *delay = MIN(*delay, timeleft); /* timeout, but within the same ReadInput cycle! */ if ((timeleft <= 0) && !hw->right) { priv->mid_emu_state = MBE_RIGHT_CLICK; done = TRUE; } else if (!hw->right || (timeleft <= 0)) { hw->right = TRUE; priv->mid_emu_state = MBE_TIMEOUT; done = TRUE; } else if (hw->left) { priv->mid_emu_state = MBE_MID; } else { hw->right = FALSE; done = TRUE; } break; case MBE_MID: if (!hw->left && !hw->right) { priv->mid_emu_state = MBE_OFF; } else { mid = TRUE; hw->left = hw->right = FALSE; done = TRUE; } break; case MBE_TIMEOUT: if (!hw->left && !hw->right) { priv->mid_emu_state = MBE_OFF; } else { done = TRUE; } } } return mid; } static enum FingerState SynapticsDetectFinger(SynapticsPrivate * priv, struct SynapticsHwState *hw) { SynapticsParameters *para = &priv->synpara; enum FingerState finger; /* finger detection thru pressure and threshold */ if (hw->z < para->finger_low) return FS_UNTOUCHED; if (priv->finger_state == FS_BLOCKED) return FS_BLOCKED; if (hw->z > para->finger_high && priv->finger_state == FS_UNTOUCHED) finger = FS_TOUCHED; else finger = priv->finger_state; if (!para->palm_detect) return finger; /* palm detection */ if ((hw->z > para->palm_min_z) && (hw->fingerWidth > para->palm_min_width)) return FS_BLOCKED; if (hw->x == 0 || priv->finger_state == FS_UNTOUCHED) priv->avg_width = 0; else priv->avg_width += (hw->fingerWidth - priv->avg_width + 1) / 2; if (finger != FS_UNTOUCHED && priv->finger_state == FS_UNTOUCHED) { int safe_width = MAX(hw->fingerWidth, priv->avg_width); if (hw->numFingers > 1 || /* more than one finger -> not a palm */ ((safe_width < 6) && (priv->prev_z < para->finger_high)) || /* thin finger, distinct touch -> not a palm */ ((safe_width < 7) && (priv->prev_z < para->finger_high / 2))) { /* thin finger, distinct touch -> not a palm */ /* leave finger value as is */ } else if (hw->z > priv->prev_z + 1) /* z not stable, may be a palm */ finger = FS_UNTOUCHED; else if (hw->z < priv->prev_z - 5) /* z not stable, may be a palm */ finger = FS_UNTOUCHED; else if (hw->fingerWidth > para->palm_min_width) /* finger width too large -> probably palm */ finger = FS_UNTOUCHED; } priv->prev_z = hw->z; return finger; } static void SelectTapButton(SynapticsPrivate * priv, enum EdgeType edge) { enum TapEvent tap; if (priv->synpara.touchpad_off == TOUCHPAD_TAP_OFF) { priv->tap_button = 0; return; } switch (priv->tap_max_fingers) { case 1: switch (edge) { case RIGHT_TOP_EDGE: DBG(7, "right top edge\n"); tap = RT_TAP; break; case RIGHT_BOTTOM_EDGE: DBG(7, "right bottom edge\n"); tap = RB_TAP; break; case LEFT_TOP_EDGE: DBG(7, "left top edge\n"); tap = LT_TAP; break; case LEFT_BOTTOM_EDGE: DBG(7, "left bottom edge\n"); tap = LB_TAP; break; default: DBG(7, "no edge\n"); tap = F1_TAP; break; } break; case 2: DBG(7, "two finger tap\n"); tap = F2_TAP; break; case 3: DBG(7, "three finger tap\n"); tap = F3_TAP; break; default: priv->tap_button = 0; return; } priv->tap_button = priv->synpara.tap_action[tap]; priv->tap_button = clamp(priv->tap_button, 0, SYN_MAX_BUTTONS); } static void SetTapState(SynapticsPrivate * priv, enum TapState tap_state, CARD32 millis) { DBG(3, "SetTapState - %d -> %d (millis:%u)\n", priv->tap_state, tap_state, millis); switch (tap_state) { case TS_START: priv->tap_button_state = TBS_BUTTON_UP; priv->tap_max_fingers = 0; break; case TS_1: priv->tap_button_state = TBS_BUTTON_UP; break; case TS_2A: priv->tap_button_state = TBS_BUTTON_UP; break; case TS_2B: priv->tap_button_state = TBS_BUTTON_UP; break; case TS_3: priv->tap_button_state = TBS_BUTTON_DOWN; break; case TS_SINGLETAP: priv->tap_button_state = TBS_BUTTON_DOWN; priv->touch_on.millis = millis; break; default: break; } priv->tap_state = tap_state; } static void SetMovingState(SynapticsPrivate * priv, enum MovingState moving_state, CARD32 millis) { DBG(7, "SetMovingState - %d -> %d center at %d/%d (millis:%u)\n", priv->moving_state, moving_state, priv->hwState->x, priv->hwState->y, millis); priv->moving_state = moving_state; } static int GetTimeOut(SynapticsPrivate * priv) { SynapticsParameters *para = &priv->synpara; switch (priv->tap_state) { case TS_1: case TS_3: case TS_5: return para->tap_time; case TS_SINGLETAP: return para->click_time; case TS_2A: return para->single_tap_timeout; case TS_2B: return para->tap_time_2; case TS_4: return para->locked_drag_time; default: return -1; /* No timeout */ } } static int HandleTapProcessing(SynapticsPrivate * priv, struct SynapticsHwState *hw, CARD32 now, enum FingerState finger, Bool inside_active_area) { SynapticsParameters *para = &priv->synpara; Bool touch, release, is_timeout, move, press; int timeleft, timeout; enum EdgeType edge; int delay = 1000000000; if (priv->finger_state == FS_BLOCKED) return delay; touch = finger >= FS_TOUCHED && priv->finger_state == FS_UNTOUCHED; release = finger == FS_UNTOUCHED && priv->finger_state >= FS_TOUCHED; move = (finger >= FS_TOUCHED && (priv->tap_max_fingers <= ((priv->horiz_scroll_twofinger_on || priv->vert_scroll_twofinger_on) ? 2 : 1)) && ((abs(hw->x - priv->touch_on.x) >= para->tap_move) || (abs(hw->y - priv->touch_on.y) >= para->tap_move))); press = (hw->left || hw->right || hw->middle); if (touch) { priv->touch_on.x = hw->x; priv->touch_on.y = hw->y; priv->touch_on.millis = now; } else if (release) { priv->touch_on.millis = now; } if (hw->z > para->finger_high) if (priv->tap_max_fingers < hw->numFingers) priv->tap_max_fingers = hw->numFingers; timeout = GetTimeOut(priv); timeleft = TIME_DIFF(priv->touch_on.millis + timeout, now); is_timeout = timeleft <= 0; restart: switch (priv->tap_state) { case TS_START: if (touch) SetTapState(priv, TS_1, now); break; case TS_1: if (para->clickpad && press) { SetTapState(priv, TS_CLICKPAD_MOVE, now); goto restart; } if (move) { SetMovingState(priv, MS_TOUCHPAD_RELATIVE, now); SetTapState(priv, TS_MOVE, now); goto restart; } else if (is_timeout) { if (finger == FS_TOUCHED) { SetMovingState(priv, MS_TOUCHPAD_RELATIVE, now); } SetTapState(priv, TS_MOVE, now); goto restart; } else if (release) { edge = edge_detection(priv, priv->touch_on.x, priv->touch_on.y); SelectTapButton(priv, edge); /* Disable taps outside of the active area */ if (!inside_active_area) { priv->tap_button = 0; } SetTapState(priv, TS_2A, now); } break; case TS_MOVE: if (para->clickpad && press) { SetTapState(priv, TS_CLICKPAD_MOVE, now); goto restart; } if (release) { SetMovingState(priv, MS_FALSE, now); SetTapState(priv, TS_START, now); } break; case TS_2A: if (touch) SetTapState(priv, TS_3, now); else if (is_timeout) SetTapState(priv, TS_SINGLETAP, now); break; case TS_2B: if (touch) { SetTapState(priv, TS_3, now); } else if (is_timeout) { SetTapState(priv, TS_START, now); priv->tap_button_state = TBS_BUTTON_DOWN_UP; } break; case TS_SINGLETAP: if (touch) SetTapState(priv, TS_1, now); else if (is_timeout) SetTapState(priv, TS_START, now); break; case TS_3: if (move) { if (para->tap_and_drag_gesture) { SetMovingState(priv, MS_TOUCHPAD_RELATIVE, now); SetTapState(priv, TS_DRAG, now); } else { SetTapState(priv, TS_1, now); } goto restart; } else if (is_timeout) { if (para->tap_and_drag_gesture) { if (finger == FS_TOUCHED) { SetMovingState(priv, MS_TOUCHPAD_RELATIVE, now); } SetTapState(priv, TS_DRAG, now); } else { SetTapState(priv, TS_1, now); } goto restart; } else if (release) { SetTapState(priv, TS_2B, now); } break; case TS_DRAG: if (para->clickpad && press) { SetTapState(priv, TS_CLICKPAD_MOVE, now); goto restart; } if (move) SetMovingState(priv, MS_TOUCHPAD_RELATIVE, now); if (release) { SetMovingState(priv, MS_FALSE, now); if (para->locked_drags) { SetTapState(priv, TS_4, now); } else { SetTapState(priv, TS_START, now); } } break; case TS_4: if (is_timeout) { SetTapState(priv, TS_START, now); goto restart; } if (touch) SetTapState(priv, TS_5, now); break; case TS_5: if (is_timeout || move) { SetTapState(priv, TS_DRAG, now); goto restart; } else if (release) { SetMovingState(priv, MS_FALSE, now); SetTapState(priv, TS_START, now); } break; case TS_CLICKPAD_MOVE: /* Disable scrolling once a button is pressed on a clickpad */ priv->vert_scroll_edge_on = FALSE; priv->horiz_scroll_edge_on = FALSE; priv->vert_scroll_twofinger_on = FALSE; priv->horiz_scroll_twofinger_on = FALSE; /* Assume one touch is only for holding the clickpad button down */ if (hw->numFingers > 1) hw->numFingers--; SetMovingState(priv, MS_TOUCHPAD_RELATIVE, now); if (!press) { SetMovingState(priv, MS_FALSE, now); SetTapState(priv, TS_MOVE, now); priv->count_packet_finger = 0; } break; } timeout = GetTimeOut(priv); if (timeout >= 0) { timeleft = TIME_DIFF(priv->touch_on.millis + timeout, now); delay = clamp(timeleft, 1, delay); } return delay; } #define HIST(a) (priv->move_hist[((priv->hist_index - (a) + SYNAPTICS_MOVE_HISTORY) % SYNAPTICS_MOVE_HISTORY)]) #define HIST_DELTA(a, b, e) ((HIST((a)).e) - (HIST((b)).e)) static void store_history(SynapticsPrivate * priv, int x, int y, CARD32 millis) { int idx = (priv->hist_index + 1) % SYNAPTICS_MOVE_HISTORY; priv->move_hist[idx].x = x; priv->move_hist[idx].y = y; priv->move_hist[idx].millis = millis; priv->hist_index = idx; if (priv->count_packet_finger < SYNAPTICS_MOVE_HISTORY) priv->count_packet_finger++; } /* * Estimate the slope for the data sequence [x3, x2, x1, x0] by using * linear regression to fit a line to the data and use the slope of the * line. */ static double estimate_delta(double x0, double x1, double x2, double x3) { return x0 * 0.3 + x1 * 0.1 - x2 * 0.1 - x3 * 0.3; } /** * Applies hysteresis. center is shifted such that it is in range with * in by the margin again. The new center is returned. * @param in the current value * @param center the current center * @param margin the margin to center in which no change is applied * @return the new center (which might coincide with the previous) */ static int hysteresis(int in, int center, int margin) { int diff = in - center; if (abs(diff) <= margin) { diff = 0; } else if (diff > margin) { diff -= margin; } else if (diff < -margin) { diff += margin; } return center + diff; } static void get_delta(SynapticsPrivate *priv, const struct SynapticsHwState *hw, enum EdgeType edge, double *dx, double *dy) { double dtime = (hw->millis - HIST(0).millis) / 1000.0; double integral; double tmpf; int x_edge_speed = 0; int y_edge_speed = 0; *dx = hw->x - HIST(0).x; *dy = hw->y - HIST(0).y; /* report edge speed as synthetic motion. Of course, it would be * cooler to report floats than to buffer, but anyway. */ /* FIXME: When these values go NaN, bad things happen. Root cause is unknown * thus far though. */ if (isnan(priv->frac_x)) priv->frac_x = 0; if (isnan(priv->frac_y)) priv->frac_y = 0; tmpf = *dx + x_edge_speed * dtime + priv->frac_x; priv->frac_x = modf(tmpf, &integral); *dx = integral; tmpf = *dy + y_edge_speed * dtime + priv->frac_y; priv->frac_y = modf(tmpf, &integral); *dy = integral; } /** * Compute relative motion ('deltas') including edge motion. */ static int ComputeDeltas(SynapticsPrivate * priv, const struct SynapticsHwState *hw, enum EdgeType edge, int *dxP, int *dyP, Bool inside_area) { enum MovingState moving_state; double dx, dy; int delay = 1000000000; dx = dy = 0; moving_state = priv->moving_state; if (moving_state == MS_FALSE) { switch (priv->tap_state) { case TS_MOVE: case TS_DRAG: moving_state = MS_TOUCHPAD_RELATIVE; break; case TS_1: case TS_3: case TS_5: moving_state = MS_TOUCHPAD_RELATIVE; break; default: break; } } if (!inside_area || !moving_state || priv->finger_state == FS_BLOCKED || priv->vert_scroll_edge_on || priv->horiz_scroll_edge_on || priv->vert_scroll_twofinger_on || priv->horiz_scroll_twofinger_on || priv->circ_scroll_on || priv->prevFingers != hw->numFingers || (moving_state == MS_TOUCHPAD_RELATIVE && hw->numFingers != 1)) { /* reset packet counter. */ priv->count_packet_finger = 0; goto out; } /* To create the illusion of fluid motion, call back at roughly the report * rate, even in the absence of new hardware events; see comment above * POLL_MS declaration. */ delay = MIN(delay, POLL_MS); if (priv->count_packet_finger <= 1) goto out; /* skip the lot */ if (moving_state == MS_TOUCHPAD_RELATIVE) get_delta(priv, hw, edge, &dx, &dy); out: priv->prevFingers = hw->numFingers; *dxP = dx; *dyP = dy; return delay; } static double estimate_delta_circ(SynapticsPrivate * priv) { double a1 = angle(priv, HIST(3).x, HIST(3).y); double a2 = angle(priv, HIST(2).x, HIST(2).y); double a3 = angle(priv, HIST(1).x, HIST(1).y); double a4 = angle(priv, HIST(0).x, HIST(0).y); double d1 = diffa(a2, a1); double d2 = d1 + diffa(a3, a2); double d3 = d2 + diffa(a4, a3); return estimate_delta(d3, d2, d1, 0); } /* vert and horiz are to know which direction to start coasting * circ is true if the user had been circular scrolling. */ static void start_coasting(SynapticsPrivate * priv, struct SynapticsHwState *hw, Bool vert, Bool horiz, Bool circ) { SynapticsParameters *para = &priv->synpara; priv->scroll.coast_delta_y = 0.0; priv->scroll.coast_delta_x = 0.0; if ((priv->scroll.packets_this_scroll > 3) && (para->coasting_speed > 0.0)) { double pkt_time = HIST_DELTA(0, 3, millis) / 1000.0; if (vert && !circ) { double dy = estimate_delta(HIST(0).y, HIST(1).y, HIST(2).y, HIST(3).y); if (pkt_time > 0) { double scrolls_per_sec = (dy / abs(para->scroll_dist_vert)) / pkt_time; if (fabs(scrolls_per_sec) >= para->coasting_speed) { priv->scroll.coast_speed_y = scrolls_per_sec; priv->scroll.coast_delta_y = (hw->y - priv->scroll.last_y); } } } if (horiz && !circ) { double dx = estimate_delta(HIST(0).x, HIST(1).x, HIST(2).x, HIST(3).x); if (pkt_time > 0) { double scrolls_per_sec = (dx / abs(para->scroll_dist_vert)) / pkt_time; if (fabs(scrolls_per_sec) >= para->coasting_speed) { priv->scroll.coast_speed_x = scrolls_per_sec; priv->scroll.coast_delta_x = (hw->x - priv->scroll.last_x); } } } if (circ) { double da = estimate_delta_circ(priv); if (pkt_time > 0) { double scrolls_per_sec = (da / para->scroll_dist_circ) / pkt_time; if (fabs(scrolls_per_sec) >= para->coasting_speed) { if (vert) { priv->scroll.coast_speed_y = scrolls_per_sec; priv->scroll.coast_delta_y = diffa(priv->scroll.last_a, angle(priv, hw->x, hw->y)); } else if (horiz) { priv->scroll.coast_speed_x = scrolls_per_sec; priv->scroll.coast_delta_x = diffa(priv->scroll.last_a, angle(priv, hw->x, hw->y)); } } } } } priv->scroll.packets_this_scroll = 0; } static void stop_coasting(SynapticsPrivate * priv) { priv->scroll.coast_speed_x = 0; priv->scroll.coast_speed_y = 0; priv->scroll.packets_this_scroll = 0; } static int HandleScrolling(SynapticsPrivate * priv, struct SynapticsHwState *hw, enum EdgeType edge, Bool finger) { SynapticsParameters *para = &priv->synpara; int delay = 1000000000; if ((priv->synpara.touchpad_off == TOUCHPAD_TAP_OFF) || (priv->finger_state == FS_BLOCKED)) { stop_coasting(priv); priv->circ_scroll_on = FALSE; priv->vert_scroll_edge_on = FALSE; priv->horiz_scroll_edge_on = FALSE; priv->vert_scroll_twofinger_on = FALSE; priv->horiz_scroll_twofinger_on = FALSE; return delay; } /* scroll detection */ if (finger && priv->finger_state == FS_UNTOUCHED) { stop_coasting(priv); priv->scroll.delta_y = 0; priv->scroll.delta_x = 0; if (para->circular_scrolling) { if ((para->circular_trigger == 0 && edge) || (para->circular_trigger == 1 && edge & TOP_EDGE) || (para->circular_trigger == 2 && edge & TOP_EDGE && edge & RIGHT_EDGE) || (para->circular_trigger == 3 && edge & RIGHT_EDGE) || (para->circular_trigger == 4 && edge & RIGHT_EDGE && edge & BOTTOM_EDGE) || (para->circular_trigger == 5 && edge & BOTTOM_EDGE) || (para->circular_trigger == 6 && edge & BOTTOM_EDGE && edge & LEFT_EDGE) || (para->circular_trigger == 7 && edge & LEFT_EDGE) || (para->circular_trigger == 8 && edge & LEFT_EDGE && edge & TOP_EDGE)) { priv->circ_scroll_on = TRUE; priv->circ_scroll_vert = TRUE; priv->scroll.last_a = angle(priv, hw->x, hw->y); DBG(7, "circular scroll detected on edge\n"); } } } if (!priv->circ_scroll_on) { if (finger) { if (hw->numFingers == 2) { if (!priv->vert_scroll_twofinger_on && (para->scroll_twofinger_vert) && (para->scroll_dist_vert != 0)) { stop_coasting(priv); priv->vert_scroll_twofinger_on = TRUE; priv->vert_scroll_edge_on = FALSE; priv->scroll.last_y = hw->y; DBG(7, "vert two-finger scroll detected\n"); } if (!priv->horiz_scroll_twofinger_on && (para->scroll_twofinger_horiz) && (para->scroll_dist_horiz != 0)) { stop_coasting(priv); priv->horiz_scroll_twofinger_on = TRUE; priv->horiz_scroll_edge_on = FALSE; priv->scroll.last_x = hw->x; DBG(7, "horiz two-finger scroll detected\n"); } } } if (finger && priv->finger_state == FS_UNTOUCHED) { if (!priv->vert_scroll_twofinger_on && !priv->horiz_scroll_twofinger_on) { if ((para->scroll_edge_vert) && (para->scroll_dist_vert != 0) && (edge & RIGHT_EDGE)) { priv->vert_scroll_edge_on = TRUE; priv->scroll.last_y = hw->y; DBG(7, "vert edge scroll detected on right edge\n"); } if ((para->scroll_edge_horiz) && (para->scroll_dist_horiz != 0) && (edge & BOTTOM_EDGE)) { priv->horiz_scroll_edge_on = TRUE; priv->scroll.last_x = hw->x; DBG(7, "horiz edge scroll detected on bottom edge\n"); } } } } { Bool oldv = priv->vert_scroll_twofinger_on || priv->vert_scroll_edge_on || (priv->circ_scroll_on && priv->circ_scroll_vert); Bool oldh = priv->horiz_scroll_twofinger_on || priv->horiz_scroll_edge_on || (priv->circ_scroll_on && !priv->circ_scroll_vert); Bool oldc = priv->circ_scroll_on; if (priv->circ_scroll_on && !finger) { /* circular scroll locks in until finger is raised */ DBG(7, "cicular scroll off\n"); priv->circ_scroll_on = FALSE; } if (!finger || hw->numFingers != 2) { if (priv->vert_scroll_twofinger_on) { DBG(7, "vert two-finger scroll off\n"); priv->vert_scroll_twofinger_on = FALSE; } if (priv->horiz_scroll_twofinger_on) { DBG(7, "horiz two-finger scroll off\n"); priv->horiz_scroll_twofinger_on = FALSE; } } if (priv->vert_scroll_edge_on && (!(edge & RIGHT_EDGE) || !finger)) { DBG(7, "vert edge scroll off\n"); priv->vert_scroll_edge_on = FALSE; } if (priv->horiz_scroll_edge_on && (!(edge & BOTTOM_EDGE) || !finger)) { DBG(7, "horiz edge scroll off\n"); priv->horiz_scroll_edge_on = FALSE; } /* If we were corner edge scrolling (coasting), * but no longer in corner or raised a finger, then stop coasting. */ if (para->scroll_edge_corner && (priv->scroll.coast_speed_x || priv->scroll.coast_speed_y)) { Bool is_in_corner = ((edge & RIGHT_EDGE) && (edge & (TOP_EDGE | BOTTOM_EDGE))) || ((edge & BOTTOM_EDGE) && (edge & (LEFT_EDGE | RIGHT_EDGE))); if (!is_in_corner || !finger) { DBG(7, "corner edge scroll off\n"); stop_coasting(priv); } } /* if we were scrolling, but couldn't corner edge scroll, * and are no longer scrolling, then start coasting */ oldv = oldv && !(priv->vert_scroll_twofinger_on || priv->vert_scroll_edge_on || (priv->circ_scroll_on && priv->circ_scroll_vert)); oldh = oldh && !(priv->horiz_scroll_twofinger_on || priv->horiz_scroll_edge_on || (priv->circ_scroll_on && !priv-> circ_scroll_vert)); oldc = oldc && !priv->circ_scroll_on; if ((oldv || oldh) && !para->scroll_edge_corner) { start_coasting(priv, hw, oldv, oldh, oldc); } } /* if hitting a corner (top right or bottom right) while vertical * scrolling is active, consider starting corner edge scrolling or * switching over to circular scrolling smoothly */ if (priv->vert_scroll_edge_on && !priv->horiz_scroll_edge_on && (edge & RIGHT_EDGE) && (edge & (TOP_EDGE | BOTTOM_EDGE))) { if (para->scroll_edge_corner) { if (priv->scroll.coast_speed_y == 0) { /* FYI: We can generate multiple start_coasting requests if * we're in the corner, but we were moving so slowly when we * got here that we didn't actually start coasting. */ DBG(7, "corner edge scroll on\n"); start_coasting(priv, hw, TRUE, FALSE, FALSE); } } else if (para->circular_scrolling) { priv->vert_scroll_edge_on = FALSE; priv->circ_scroll_on = TRUE; priv->circ_scroll_vert = TRUE; priv->scroll.last_a = angle(priv, hw->x, hw->y); DBG(7, "switching to circular scrolling\n"); } } /* Same treatment for horizontal scrolling */ if (priv->horiz_scroll_edge_on && !priv->vert_scroll_edge_on && (edge & BOTTOM_EDGE) && (edge & (LEFT_EDGE | RIGHT_EDGE))) { if (para->scroll_edge_corner) { if (priv->scroll.coast_speed_x == 0) { /* FYI: We can generate multiple start_coasting requests if * we're in the corner, but we were moving so slowly when we * got here that we didn't actually start coasting. */ DBG(7, "corner edge scroll on\n"); start_coasting(priv, hw, FALSE, TRUE, FALSE); } } else if (para->circular_scrolling) { priv->horiz_scroll_edge_on = FALSE; priv->circ_scroll_on = TRUE; priv->circ_scroll_vert = FALSE; priv->scroll.last_a = angle(priv, hw->x, hw->y); DBG(7, "switching to circular scrolling\n"); } } if (priv->vert_scroll_edge_on || priv->horiz_scroll_edge_on || priv->vert_scroll_twofinger_on || priv->horiz_scroll_twofinger_on || priv->circ_scroll_on) { priv->scroll.packets_this_scroll++; } if (priv->vert_scroll_edge_on || priv->vert_scroll_twofinger_on) { /* + = down, - = up */ if (para->scroll_dist_vert != 0 && hw->y != priv->scroll.last_y) { priv->scroll.delta_y += (hw->y - priv->scroll.last_y); priv->scroll.last_y = hw->y; } } if (priv->horiz_scroll_edge_on || priv->horiz_scroll_twofinger_on) { /* + = right, - = left */ if (para->scroll_dist_horiz != 0 && hw->x != priv->scroll.last_x) { priv->scroll.delta_x += (hw->x - priv->scroll.last_x); priv->scroll.last_x = hw->x; } } if (priv->circ_scroll_on) { /* + = counter clockwise, - = clockwise */ double delta = para->scroll_dist_circ; double diff = diffa(priv->scroll.last_a, angle(priv, hw->x, hw->y)); if (delta >= 0.005 && diff != 0.0) { if (priv->circ_scroll_vert) priv->scroll.delta_y -= diff / delta * para->scroll_dist_vert; else priv->scroll.delta_x -= diff / delta * para->scroll_dist_horiz; priv->scroll.last_a = angle(priv, hw->x, hw->y); } } if (priv->scroll.coast_speed_y) { double dtime = (hw->millis - priv->scroll.last_millis) / 1000.0; double ddy = para->coasting_friction * dtime; priv->scroll.delta_y += priv->scroll.coast_speed_y * dtime * abs(para->scroll_dist_vert); delay = MIN(delay, POLL_MS); if (abs(priv->scroll.coast_speed_y) < ddy) { priv->scroll.coast_speed_y = 0; priv->scroll.packets_this_scroll = 0; } else { priv->scroll.coast_speed_y += (priv->scroll.coast_speed_y < 0 ? ddy : -ddy); } } if (priv->scroll.coast_speed_x) { double dtime = (hw->millis - priv->scroll.last_millis) / 1000.0; double ddx = para->coasting_friction * dtime; priv->scroll.delta_x += priv->scroll.coast_speed_x * dtime * abs(para->scroll_dist_horiz); delay = MIN(delay, POLL_MS); if (abs(priv->scroll.coast_speed_x) < ddx) { priv->scroll.coast_speed_x = 0; priv->scroll.packets_this_scroll = 0; } else { priv->scroll.coast_speed_x += (priv->scroll.coast_speed_x < 0 ? ddx : -ddx); } } return delay; } /** * Check if any 2+ fingers are close enough together to assume this is a * ClickFinger action. */ static int clickpad_guess_clickfingers(SynapticsPrivate * priv, struct SynapticsHwState *hw) { int nfingers = 0; uint32_t close_point = 0; /* 1 bit for each point close to another one */ int i, j; BUG_RETURN_VAL(hw->num_mt_mask > sizeof(close_point) * 8, 0); for (i = 0; i < hw->num_mt_mask - 1; i++) { ValuatorMask *f1; if (hw->slot_state[i] == SLOTSTATE_EMPTY || hw->slot_state[i] == SLOTSTATE_CLOSE) continue; f1 = hw->mt_mask[i]; for (j = i + 1; j < hw->num_mt_mask; j++) { ValuatorMask *f2; double x1, x2, y1, y2; if (hw->slot_state[j] == SLOTSTATE_EMPTY || hw->slot_state[j] == SLOTSTATE_CLOSE) continue; f2 = hw->mt_mask[j]; x1 = valuator_mask_get_double(f1, 0); y1 = valuator_mask_get_double(f1, 1); x2 = valuator_mask_get_double(f2, 0); y2 = valuator_mask_get_double(f2, 1); /* FIXME: fingers closer together than 30% of touchpad width, but * really, this should be dependent on the touchpad size. Also, * you'll need to find a touchpad that doesn't lie about it's * size. Good luck. */ if (abs(x1 - x2) < (priv->maxx - priv->minx) * .3 && abs(y1 - y2) < (priv->maxy - priv->miny) * .3) { close_point |= (1 << j); close_point |= (1 << i); } } } while (close_point > 0) { nfingers += close_point & 0x1; close_point >>= 1; } return nfingers; } static void handle_clickfinger(SynapticsPrivate * priv, struct SynapticsHwState *hw) { SynapticsParameters *para = &priv->synpara; int action = 0; int nfingers = hw->numFingers; /* if this is a clickpad, clickfinger handling is: * one finger down: no action, this is a normal click * two fingers down: F2_CLICK * three fingers down: F3_CLICK */ if (para->clickpad) nfingers = clickpad_guess_clickfingers(priv, hw); switch (nfingers) { case 1: action = para->click_action[F1_CLICK1]; break; case 2: action = para->click_action[F2_CLICK1]; break; case 3: action = para->click_action[F3_CLICK1]; break; } switch (action) { case 1: hw->left = 1 | BTN_EMULATED_FLAG; break; case 2: hw->left = 0; hw->middle = 1 | BTN_EMULATED_FLAG; break; case 3: hw->left = 0; hw->right = 1 | BTN_EMULATED_FLAG; break; } } static void update_hw_button_state(const InputInfoPtr pInfo, struct SynapticsHwState *hw, struct SynapticsHwState *old, CARD32 now, int *delay) { SynapticsPrivate *priv = (SynapticsPrivate *) (pInfo->private); SynapticsParameters *para = &priv->synpara; /* Treat the first two multi buttons as up/down for now. */ hw->up |= hw->multi[0]; hw->down |= hw->multi[1]; /* 3rd button emulation */ hw->middle |= HandleMidButtonEmulation(priv, hw, now, delay); /* If this is a clickpad and the user clicks in a soft button area, press * the soft button instead. */ if (para->clickpad) { /* hw->left is down, but no other buttons were already down */ if (!old->left && !old->right && !old->middle && hw->left && !hw->right && !hw->middle) { if (is_inside_rightbutton_area(para, hw->x, hw->y)) { hw->left = 0; hw->right = 1; } else if (is_inside_middlebutton_area(para, hw->x, hw->y)) { hw->left = 0; hw->middle = 1; } } else if (hw->left) { hw->left = old->left; hw->right = old->right; hw->middle = old->middle; } } /* Fingers emulate other buttons. ClickFinger can only be triggered on transition, when left is pressed */ if (hw->left && !old->left && !old->middle && !old->right && hw->numFingers >= 1) { handle_clickfinger(priv, hw); } /* Two finger emulation */ if (hw->numFingers == 1 && hw->z >= para->emulate_twofinger_z && hw->fingerWidth >= para->emulate_twofinger_w) { hw->numFingers = 2; } } static void post_button_click(const InputInfoPtr pInfo, const int button) { xf86PostButtonEvent(pInfo->dev, FALSE, button, TRUE, 0, 0); xf86PostButtonEvent(pInfo->dev, FALSE, button, FALSE, 0, 0); } static void post_scroll_events(const InputInfoPtr pInfo) { SynapticsPrivate *priv = (SynapticsPrivate *) (pInfo->private); valuator_mask_zero(priv->scroll_events_mask); if (priv->scroll.delta_y != 0.0) { valuator_mask_set_double(priv->scroll_events_mask, priv->scroll_axis_vert, priv->scroll.delta_y); priv->scroll.delta_y = 0; } if (priv->scroll.delta_x != 0.0) { valuator_mask_set_double(priv->scroll_events_mask, priv->scroll_axis_horiz, priv->scroll.delta_x); priv->scroll.delta_x = 0; } if (valuator_mask_num_valuators(priv->scroll_events_mask)) xf86PostMotionEventM(pInfo->dev, FALSE, priv->scroll_events_mask); } /* Update the open slots and number of active touches */ static void UpdateTouchState(InputInfoPtr pInfo, struct SynapticsHwState *hw) { SynapticsPrivate *priv = (SynapticsPrivate *) pInfo->private; int i; for (i = 0; i < hw->num_mt_mask; i++) { if (hw->slot_state[i] == SLOTSTATE_OPEN) { priv->open_slots[priv->num_active_touches] = i; priv->num_active_touches++; BUG_WARN(priv->num_active_touches > priv->num_slots); } else if (hw->slot_state[i] == SLOTSTATE_CLOSE) { Bool found = FALSE; int j; for (j = 0; j < priv->num_active_touches - 1; j++) { if (priv->open_slots[j] == i) found = TRUE; if (found) priv->open_slots[j] = priv->open_slots[j + 1]; } BUG_WARN(priv->num_active_touches == 0); if (priv->num_active_touches > 0) priv->num_active_touches--; } } SynapticsResetTouchHwState(hw, FALSE); } static void HandleTouches(InputInfoPtr pInfo, struct SynapticsHwState *hw) { SynapticsPrivate *priv = (SynapticsPrivate *) pInfo->private; SynapticsParameters *para = &priv->synpara; int new_active_touches = priv->num_active_touches; int min_touches = 2; Bool restart_touches = FALSE; int i; if (para->click_action[F3_CLICK1] || para->tap_action[F3_TAP]) min_touches = 4; else if (para->click_action[F2_CLICK1] || para->tap_action[F2_TAP] || para->scroll_twofinger_vert || para->scroll_twofinger_horiz) min_touches = 3; /* Count new number of active touches */ for (i = 0; i < hw->num_mt_mask; i++) { if (hw->slot_state[i] == SLOTSTATE_OPEN) new_active_touches++; else if (hw->slot_state[i] == SLOTSTATE_CLOSE) new_active_touches--; } if (priv->has_semi_mt) goto out; if (priv->num_active_touches < min_touches && new_active_touches < min_touches) { /* We stayed below number of touches needed to send events */ goto out; } else if (priv->num_active_touches >= min_touches && new_active_touches < min_touches) { /* We are transitioning to less than the number of touches needed to * send events. End all currently open touches. */ for (i = 0; i < priv->num_active_touches; i++) { int slot = priv->open_slots[i]; xf86PostTouchEvent(pInfo->dev, slot, XI_TouchEnd, 0, hw->mt_mask[slot]); } /* Don't send any more events */ goto out; } else if (priv->num_active_touches < min_touches && new_active_touches >= min_touches) { /* We are transitioning to more than the number of touches needed to * send events. Begin all already open touches. */ restart_touches = TRUE; for (i = 0; i < priv->num_active_touches; i++) { int slot = priv->open_slots[i]; xf86PostTouchEvent(pInfo->dev, slot, XI_TouchBegin, 0, hw->mt_mask[slot]); } } /* Send touch begin events for all new touches */ for (i = 0; i < hw->num_mt_mask; i++) if (hw->slot_state[i] == SLOTSTATE_OPEN) xf86PostTouchEvent(pInfo->dev, i, XI_TouchBegin, 0, hw->mt_mask[i]); /* Send touch update/end events for all the rest */ for (i = 0; i < priv->num_active_touches; i++) { int slot = priv->open_slots[i]; /* Don't send update event if we just reopened the touch above */ if (hw->slot_state[slot] == SLOTSTATE_UPDATE && !restart_touches) xf86PostTouchEvent(pInfo->dev, slot, XI_TouchUpdate, 0, hw->mt_mask[slot]); else if (hw->slot_state[slot] == SLOTSTATE_CLOSE) xf86PostTouchEvent(pInfo->dev, slot, XI_TouchEnd, 0, hw->mt_mask[slot]); } out: UpdateTouchState(pInfo, hw); } static void filter_jitter(SynapticsPrivate * priv, int *x, int *y) { SynapticsParameters *para = &priv->synpara; priv->hyst_center_x = hysteresis(*x, priv->hyst_center_x, para->hyst_x); priv->hyst_center_y = hysteresis(*y, priv->hyst_center_y, para->hyst_y); *x = priv->hyst_center_x; *y = priv->hyst_center_y; } static void reset_hw_state(struct SynapticsHwState *hw) { hw->x = 0; hw->y = 0; hw->z = 0; hw->numFingers = 0; hw->fingerWidth = 0; } /* * React on changes in the hardware state. This function is called every time * the hardware state changes. The return value is used to specify how many * milliseconds to wait before calling the function again if no state change * occurs. * * from_timer denotes if HandleState was triggered from a timer (e.g. to * generate fake motion events, or for the tap-to-click state machine), rather * than from having received a motion event. */ static int HandleState(InputInfoPtr pInfo, struct SynapticsHwState *hw, CARD32 now, Bool from_timer) { SynapticsPrivate *priv = (SynapticsPrivate *) (pInfo->private); SynapticsParameters *para = &priv->synpara; enum FingerState finger = FS_UNTOUCHED; int dx = 0, dy = 0, buttons, id; enum EdgeType edge = NO_EDGE; int change; int double_click = FALSE; int delay = 1000000000; int timeleft; Bool inside_active_area; /* If touchpad is switched off, we skip the whole thing and return delay */ if (para->touchpad_off == TOUCHPAD_OFF) { UpdateTouchState(pInfo, hw); return delay; } /* We need both and x/y, the driver can't handle just one of the two * yet. But since it's possible to hit a phys button on non-clickpads * without ever getting motion data first, we must continue with 0/0 for * that case. */ if (hw->x == INT_MIN || hw->y == INT_MAX) { if (para->clickpad) return delay; else if (hw->left || hw->right || hw->middle) { hw->x = (hw->x == INT_MIN) ? 0 : hw->x; hw->y = (hw->y == INT_MIN) ? 0 : hw->y; } } /* If a physical button is pressed on a clickpad, use cumulative relative * touch movements for motion */ if (para->clickpad && (hw->left || hw->right || hw->middle)) { hw->x = hw->cumulative_dx; hw->y = hw->cumulative_dy; } /* apply hysteresis before doing anything serious. This cancels * out a lot of noise which might surface in strange phenomena * like flicker in scrolling or noise motion. */ filter_jitter(priv, &hw->x, &hw->y); inside_active_area = is_inside_active_area(priv, hw->x, hw->y); /* these two just update hw->left, right, etc. */ update_hw_button_state(pInfo, hw, priv->old_hw_state, now, &delay); /* now we know that these _coordinates_ aren't in the area. invalid are: x, y, z, numFingers, fingerWidth valid are: millis, left/right/middle/up/down/etc. */ if (!inside_active_area) { reset_hw_state(hw); /* FIXME: if finger accidentally moves into the area and doesn't * really release, the finger should remain down. */ } /* no edge or finger detection outside of area */ if (inside_active_area) { edge = edge_detection(priv, hw->x, hw->y); if (!from_timer) finger = SynapticsDetectFinger(priv, hw); else finger = priv->finger_state; } /* tap and drag detection. Needs to be performed even if the finger is in * the dead area to reset the state. */ timeleft = HandleTapProcessing(priv, hw, now, finger, inside_active_area); if (timeleft > 0) delay = MIN(delay, timeleft); if (inside_active_area) { /* Don't bother about scrolling in the dead area of the touchpad. */ timeleft = HandleScrolling(priv, hw, edge, (finger >= FS_TOUCHED)); if (timeleft > 0) delay = MIN(delay, timeleft); /* * Compensate for unequal x/y resolution. This needs to be done after * calculations that require unadjusted coordinates, for example edge * detection. */ ScaleCoordinates(priv, hw); } dx = dy = 0; timeleft = ComputeDeltas(priv, hw, edge, &dx, &dy, inside_active_area); delay = MIN(delay, timeleft); buttons = ((hw->left ? 0x01 : 0) | (hw->middle ? 0x02 : 0) | (hw->right ? 0x04 : 0) | (hw->up ? 0x08 : 0) | (hw->down ? 0x10 : 0) | (hw->multi[2] ? 0x20 : 0) | (hw->multi[3] ? 0x40 : 0)); if (priv->tap_button > 0) { int tap_mask = 1 << (priv->tap_button - 1); if (priv->tap_button_state == TBS_BUTTON_DOWN_UP) { if (tap_mask != (priv->lastButtons & tap_mask)) { xf86PostButtonEvent(pInfo->dev, FALSE, priv->tap_button, TRUE, 0, 0); priv->lastButtons |= tap_mask; } priv->tap_button_state = TBS_BUTTON_UP; } if (priv->tap_button_state == TBS_BUTTON_DOWN) buttons |= tap_mask; } /* Post events */ if (finger >= FS_TOUCHED && (dx || dy)) xf86PostMotionEvent(pInfo->dev, 0, 0, 2, dx, dy); if (priv->mid_emu_state == MBE_LEFT_CLICK) { post_button_click(pInfo, 1); priv->mid_emu_state = MBE_OFF; } else if (priv->mid_emu_state == MBE_RIGHT_CLICK) { post_button_click(pInfo, 3); priv->mid_emu_state = MBE_OFF; } change = buttons ^ priv->lastButtons; while (change) { id = ffs(change); /* number of first set bit 1..32 is returned */ change &= ~(1 << (id - 1)); xf86PostButtonEvent(pInfo->dev, FALSE, id, (buttons & (1 << (id - 1))), 0, 0); } /* Process scroll events only if coordinates are * in the Synaptics Area */ if (inside_active_area && (priv->scroll.delta_x != 0.0 || priv->scroll.delta_y != 0.0)) { post_scroll_events(pInfo); priv->scroll.last_millis = hw->millis; } if (double_click) { post_button_click(pInfo, 1); post_button_click(pInfo, 1); } HandleTouches(pInfo, hw); /* Save old values of some state variables */ priv->finger_state = finger; priv->lastButtons = buttons; /* generate a history of the absolute positions */ if (inside_active_area) store_history(priv, hw->x, hw->y, hw->millis); /* Save logical state for transition comparisons */ SynapticsCopyHwState(priv->old_hw_state, hw); return delay; } static int ControlProc(InputInfoPtr pInfo, xDeviceCtl * control) { DBG(3, "Control Proc called\n"); return Success; } static int SwitchMode(ClientPtr client, DeviceIntPtr dev, int mode) { DBG(3, "SwitchMode called\n"); return XI_BadMode; } static void ReadDevDimensions(InputInfoPtr pInfo) { SynapticsPrivate *priv = (SynapticsPrivate *) pInfo->private; if (priv->proto_ops->ReadDevDimensions) priv->proto_ops->ReadDevDimensions(pInfo); SanitizeDimensions(pInfo); } static Bool QueryHardware(InputInfoPtr pInfo) { SynapticsPrivate *priv = (SynapticsPrivate *) pInfo->private; priv->comm.protoBufTail = 0; if (!priv->proto_ops->QueryHardware(pInfo)) { xf86IDrvMsg(pInfo, X_PROBED, "no supported touchpad found\n"); if (priv->proto_ops->DeviceOffHook) priv->proto_ops->DeviceOffHook(pInfo); return FALSE; } return TRUE; } static void ScaleCoordinates(SynapticsPrivate * priv, struct SynapticsHwState *hw) { int xCenter = (priv->synpara.left_edge + priv->synpara.right_edge) / 2; int yCenter = (priv->synpara.top_edge + priv->synpara.bottom_edge) / 2; hw->x = (hw->x - xCenter) * priv->horiz_coeff + xCenter; hw->y = (hw->y - yCenter) * priv->vert_coeff + yCenter; } void CalculateScalingCoeffs(SynapticsPrivate * priv) { int vertRes = priv->synpara.resolution_vert; int horizRes = priv->synpara.resolution_horiz; if ((horizRes > vertRes) && (horizRes > 0)) { priv->horiz_coeff = vertRes / (double) horizRes; priv->vert_coeff = 1; } else if ((horizRes < vertRes) && (vertRes > 0)) { priv->horiz_coeff = 1; priv->vert_coeff = horizRes / (double) vertRes; } else { priv->horiz_coeff = 1; priv->vert_coeff = 1; } }