diff options
Diffstat (limited to 'xorg-server/dix/getevents.c')
| -rw-r--r-- | xorg-server/dix/getevents.c | 618 |
1 files changed, 372 insertions, 246 deletions
diff --git a/xorg-server/dix/getevents.c b/xorg-server/dix/getevents.c index be2840c47..c42971592 100644 --- a/xorg-server/dix/getevents.c +++ b/xorg-server/dix/getevents.c @@ -2,6 +2,7 @@ * Copyright © 2006 Nokia Corporation * Copyright © 2006-2007 Daniel Stone * Copyright © 2008 Red Hat, Inc. + * Copyright © 2011 The Chromium Authors * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), @@ -58,6 +59,7 @@ #endif #include <X11/extensions/XI.h> +#include <X11/extensions/XI2.h> #include <X11/extensions/XIproto.h> #include <pixman.h> #include "exglobals.h" @@ -167,7 +169,7 @@ init_raw(DeviceIntPtr dev, RawDeviceEvent *event, Time ms, int type, int detail) } static void -set_raw_valuators(RawDeviceEvent *event, ValuatorMask *mask, int32_t* data) +set_raw_valuators(RawDeviceEvent *event, ValuatorMask *mask, double* data) { int i; @@ -176,7 +178,7 @@ set_raw_valuators(RawDeviceEvent *event, ValuatorMask *mask, int32_t* data) if (valuator_mask_isset(mask, i)) { SetBit(event->valuators.mask, i); - data[i] = valuator_mask_get(mask, i); + data[i] = valuator_mask_get_double(mask, i); } } } @@ -196,9 +198,7 @@ set_valuators(DeviceIntPtr dev, DeviceEvent* event, ValuatorMask *mask) SetBit(event->valuators.mask, i); if (valuator_get_mode(dev, i) == Absolute) SetBit(event->valuators.mode, i); - event->valuators.data[i] = valuator_mask_get(mask, i); - event->valuators.data_frac[i] = - dev->last.remainder[i] * (1 << 16) * (1 << 16); + event->valuators.data[i] = valuator_mask_get_double(mask, i); } else if (valuator_get_mode(dev, i) == Absolute) event->valuators.data[i] = dev->valuator->axisVal[i]; @@ -255,39 +255,29 @@ CreateClassesChangedEvent(InternalEvent* event, /** * Rescale the coord between the two axis ranges. */ -static int -rescaleValuatorAxis(int coord, float remainder, float *remainder_return, AxisInfoPtr from, AxisInfoPtr to, - int defmax) +static double +rescaleValuatorAxis(double coord, AxisInfoPtr from, AxisInfoPtr to, + double defmax) { - int fmin = 0, tmin = 0, fmax = defmax, tmax = defmax, coord_return; - float value; + double fmin = 0.0, fmax = defmax; + double tmin = 0.0, tmax = defmax; - if(from && from->min_value < from->max_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) { + 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; + if (fmin == tmin && fmax == tmax) return coord; - } - if(fmax == fmin) { /* avoid division by 0 */ - if (remainder_return) - *remainder_return = 0.0; - return 0; - } + if (fmax == fmin) /* avoid division by 0 */ + return 0.0; - value = (coord + remainder - fmin) * (tmax - tmin) / (fmax - fmin) + tmin; - coord_return = lroundf(value); - if (remainder_return) - *remainder_return = value - coord_return; - return coord_return; + return (coord - fmin) * (tmax - tmin) / (fmax - fmin) + tmin; } /** @@ -309,19 +299,25 @@ updateSlaveDeviceCoords(DeviceIntPtr master, DeviceIntPtr pDev) * position of the pointer */ pDev->last.valuators[0] = master->last.valuators[0]; pDev->last.valuators[1] = master->last.valuators[1]; - pDev->last.remainder[0] = master->last.remainder[0]; - pDev->last.remainder[1] = master->last.remainder[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); + { + pDev->last.valuators[0] = rescaleValuatorAxis(pDev->last.valuators[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); + { + pDev->last.valuators[1] = rescaleValuatorAxis(pDev->last.valuators[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, @@ -332,16 +328,13 @@ updateSlaveDeviceCoords(DeviceIntPtr master, DeviceIntPtr pDev) if (i >= lastSlave->valuator->numAxes) { pDev->last.valuators[i] = 0; - pDev->last.remainder[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); + double val = pDev->last.valuators[i]; + val = rescaleValuatorAxis(val, lastSlave->valuator->axes + i, + pDev->valuator->axes + i, 0); + pDev->last.valuators[i] = val; } } } @@ -452,7 +445,7 @@ GetMotionHistory(DeviceIntPtr pDev, xTimecoord **buff, unsigned long start, /* scale to screen coords */ to = &core_axis; to->max_value = pScreen->width; - coord = rescaleValuatorAxis(coord, 0.0, NULL, &from, to, pScreen->width); + coord = rescaleValuatorAxis(coord, &from, to, pScreen->width); memcpy(corebuf, &coord, sizeof(INT16)); corebuf++; @@ -463,7 +456,7 @@ GetMotionHistory(DeviceIntPtr pDev, xTimecoord **buff, unsigned long start, memcpy(&coord, icbuf++, sizeof(INT32)); to->max_value = pScreen->height; - coord = rescaleValuatorAxis(coord, 0.0, NULL, &from, to, pScreen->height); + coord = rescaleValuatorAxis(coord, &from, to, pScreen->height); memcpy(corebuf, &coord, sizeof(INT16)); } else if (IsMaster(pDev)) @@ -491,7 +484,7 @@ GetMotionHistory(DeviceIntPtr pDev, xTimecoord **buff, unsigned long start, from.max_value = pScreen->height; /* scale from stored range into current range */ - coord = rescaleValuatorAxis(coord, 0.0, NULL, &from, to, 0); + coord = rescaleValuatorAxis(coord, &from, to, 0); memcpy(ocbuf, &coord, sizeof(INT32)); ocbuf++; } @@ -525,7 +518,7 @@ GetMotionHistory(DeviceIntPtr pDev, xTimecoord **buff, unsigned long start, */ static void updateMotionHistory(DeviceIntPtr pDev, CARD32 ms, ValuatorMask *mask, - int *valuators) + double *valuators) { char *buff = (char *) pDev->valuator->motion; ValuatorClassPtr v; @@ -547,6 +540,7 @@ updateMotionHistory(DeviceIntPtr pDev, CARD32 ms, ValuatorMask *mask, for (i = 0; i < v->numAxes; i++) { + int val; /* XI1 doesn't support mixed mode devices */ if (valuator_get_mode(pDev, i) != valuator_get_mode(pDev, 0)) break; @@ -559,7 +553,8 @@ updateMotionHistory(DeviceIntPtr pDev, CARD32 ms, ValuatorMask *mask, buff += sizeof(INT32); memcpy(buff, &v->axes[i].max_value, sizeof(INT32)); buff += sizeof(INT32); - memcpy(buff, &valuators[i], sizeof(INT32)); + val = valuators[i]; + memcpy(buff, &val, sizeof(INT32)); buff += sizeof(INT32); } } else @@ -575,12 +570,14 @@ updateMotionHistory(DeviceIntPtr pDev, CARD32 ms, ValuatorMask *mask, for (i = 0; i < MAX_VALUATORS; i++) { + int val; if (valuator_mask_size(mask) <= i || !valuator_mask_isset(mask, i)) { buff += sizeof(INT32); continue; } - memcpy(buff, &valuators[i], sizeof(INT32)); + val = valuators[i]; + memcpy(buff, &val, sizeof(INT32)); buff += sizeof(INT32); } } @@ -607,8 +604,10 @@ GetMaximumEventsNum(void) { /* One raw event * One device event * One possible device changed event + * Lots of possible separate button scroll events (horiz + vert) + * Lots of possible separate raw button scroll events (horiz + vert) */ - return 3; + return 100; } @@ -617,7 +616,7 @@ GetMaximumEventsNum(void) { * InitValuatorAxisClassStruct. */ static void -clipAxis(DeviceIntPtr pDev, int axisNum, int *val) +clipAxis(DeviceIntPtr pDev, int axisNum, double *val) { AxisInfoPtr axis; @@ -647,9 +646,9 @@ clipValuators(DeviceIntPtr pDev, ValuatorMask *mask) for (i = 0; i < valuator_mask_size(mask); i++) if (valuator_mask_isset(mask, i)) { - int val = valuator_mask_get(mask, i); + double val = valuator_mask_get_double(mask, i); clipAxis(pDev, i, &val); - valuator_mask_set(mask, i, val); + valuator_mask_set_double(mask, i, val); } } @@ -690,85 +689,52 @@ UpdateFromMaster(InternalEvent* events, DeviceIntPtr dev, int type, int *num_eve /** * Move the device's pointer to the position given in the valuators. * - * @param dev The device which's pointer is to be moved. - * @param x Returns the x position of the pointer after the move. - * @param y Returns the y position of the pointer after the move. - * @param mask Bit mask of valid valuators. - * @param valuators Valuator data for each axis between @first and - * @first+@num. + * @param dev The device whose pointer is to be moved. + * @param mask Valuator data for this event. */ static void -moveAbsolute(DeviceIntPtr dev, int *x, int *y, ValuatorMask *mask) +moveAbsolute(DeviceIntPtr dev, ValuatorMask *mask) { int i; - if (valuator_mask_isset(mask, 0)) - *x = valuator_mask_get(mask, 0); - else - *x = dev->last.valuators[0]; - - if (valuator_mask_isset(mask, 1)) - *y = valuator_mask_get(mask, 1); - else - *y = dev->last.valuators[1]; - - clipAxis(dev, 0, x); - clipAxis(dev, 1, y); - - for (i = 2; i < valuator_mask_size(mask); i++) + for (i = 0; i < valuator_mask_size(mask); i++) { - if (valuator_mask_isset(mask, i)) - { - dev->last.valuators[i] = valuator_mask_get(mask, i); - clipAxis(dev, i, &dev->last.valuators[i]); - } + double val; + + if (!valuator_mask_isset(mask, i)) + continue; + val = valuator_mask_get_double(mask, i); + clipAxis(dev, i, &val); + valuator_mask_set_double(mask, i, val); } } /** * Move the device's pointer by the values given in @valuators. * - * @param dev The device which's pointer is to be moved. - * @param x Returns the x position of the pointer after the move. - * @param y Returns the y position of the pointer after the move. - * @param mask Bit mask of valid valuators. - * @param valuators Valuator data for each axis between @first and - * @first+@num. + * @param dev The device whose pointer is to be moved. + * @param mask Valuator data for this event. */ static void -moveRelative(DeviceIntPtr dev, int *x, int *y, ValuatorMask *mask) +moveRelative(DeviceIntPtr dev, ValuatorMask *mask) { int i; - - *x = dev->last.valuators[0]; - *y = dev->last.valuators[1]; - - if (valuator_mask_isset(mask, 0)) - *x += valuator_mask_get(mask, 0); - - if (valuator_mask_isset(mask, 1)) - *y += valuator_mask_get(mask, 1); - - /* if attached, clip both x and y to the defined limits (usually - * co-ord space limit). If it is attached, we need x/y to go over the - * limits to be able to change screens. */ - if (dev->valuator && (IsMaster(dev) || !IsFloating(dev))) { - if (valuator_get_mode(dev, 0) == Absolute) - clipAxis(dev, 0, x); - if (valuator_get_mode(dev, 1) == Absolute) - clipAxis(dev, 1, y); - } + Bool clip_xy = IsMaster(dev) || !IsFloating(dev); /* calc other axes, clip, drop back into valuators */ - for (i = 2; i < valuator_mask_size(mask); i++) + for (i = 0; i < valuator_mask_size(mask); i++) { - if (valuator_mask_isset(mask, i)) - { - dev->last.valuators[i] += valuator_mask_get(mask, i); - if (valuator_get_mode(dev, i) == Absolute) - clipAxis(dev, i, &dev->last.valuators[i]); - valuator_mask_set(mask, i, dev->last.valuators[i]); - } + double val = dev->last.valuators[i]; + + if (!valuator_mask_isset(mask, i)) + continue; + val += valuator_mask_get_double(mask, i); + /* x & y need to go over the limits to cross screens if the SD + * isn't currently attached; otherwise, clip to screen bounds. */ + if (valuator_get_mode(dev, i) == Absolute && + ((i != 0 && i != 1) || clip_xy)) + clipAxis(dev, i, &val); + valuator_mask_set_double(mask, i, val); } } @@ -799,89 +765,68 @@ accelPointer(DeviceIntPtr dev, ValuatorMask* valuators, CARD32 ms) * * @param dev The device to be moved. * @param mode Movement mode (Absolute or Relative) - * @param x Pointer to current x-axis value, may be modified. - * @param y Pointer to current y-axis value, may be modified. - * @param x_frac Fractional part of current x-axis value, may be modified. - * @param y_frac Fractional part of current y-axis value, may be modified. * @param scr Screen the device's sprite is currently on. + * @param mask Mask of axis values for this event * @param screenx Screen x coordinate the sprite is on after the update. * @param screeny Screen y coordinate the sprite is on after the update. - * @param screenx_frac Fractional part of screen x coordinate, as above. - * @param screeny_frac Fractional part of screen y coordinate, as above. */ static void -positionSprite(DeviceIntPtr dev, int mode, - int *x, int *y, float x_frac, float y_frac, - ScreenPtr scr, int *screenx, int *screeny, float *screenx_frac, float *screeny_frac) +positionSprite(DeviceIntPtr dev, int mode, ScreenPtr scr, ValuatorMask *mask, + double *screenx, double *screeny) { - int old_screenx, old_screeny; + int isx, isy; /* screen {x, y}, in int */ + double x, y; - /* scale x&y to screen */ - if (dev->valuator && dev->valuator->numAxes > 0) { - *screenx = rescaleValuatorAxis(*x, x_frac, screenx_frac, - dev->valuator->axes + 0, NULL, scr->width); - } else { - *screenx = dev->last.valuators[0]; - *screenx_frac = dev->last.remainder[0]; - } + if (!dev->valuator || dev->valuator->numAxes < 2) + return; - if (dev->valuator && dev->valuator->numAxes > 1) { - *screeny = rescaleValuatorAxis(*y, y_frac, screeny_frac, - dev->valuator->axes + 1, NULL, scr->height); - } else { - *screeny = dev->last.valuators[1]; - *screeny_frac = dev->last.remainder[1]; - } + if (valuator_mask_isset(mask, 0)) + x = valuator_mask_get_double(mask, 0); + else + x = dev->last.valuators[0]; + if (valuator_mask_isset(mask, 1)) + y = valuator_mask_get_double(mask, 1); + else + y = dev->last.valuators[1]; - /* Hit the left screen edge? */ - if (*screenx <= 0 && *screenx_frac < 0.0f) + /* scale x&y to screen */ + *screenx = rescaleValuatorAxis(x, dev->valuator->axes + 0, NULL, + scr->width); + *screeny = rescaleValuatorAxis(y, dev->valuator->axes + 1, NULL, + scr->height); + + /* miPointerSetPosition takes care of crossing screens for us, as well as + * clipping to the current screen. In the event we actually change screen, + * we just drop the float component on the floor, then convert from + * screenx back into device co-ordinates. */ + isx = trunc(*screenx); + isy = trunc(*screeny); + miPointerSetPosition(dev, mode, &isx, &isy); + scr = miPointerGetScreen(dev); + if (isx != trunc(*screenx)) { - *screenx_frac = 0.0f; - x_frac = 0.0f; + *screenx -= trunc(*screenx) - isx; + x = rescaleValuatorAxis(*screenx, NULL, dev->valuator->axes + 0, + scr->width); } - if (*screeny <= 0 && *screeny_frac < 0.0f) + if (isy != trunc(*screeny)) { - *screeny_frac = 0.0f; - y_frac = 0.0f; + *screeny -= trunc(*screeny) - isy; + y = rescaleValuatorAxis(*screeny, NULL, dev->valuator->axes + 1, + scr->height); } - - old_screenx = *screenx; - old_screeny = *screeny; - /* This takes care of crossing screens for us, as well as clipping - * to the current screen. */ - miPointerSetPosition(dev, mode, screenx, screeny); - - if(!IsMaster(dev) && !IsFloating(dev)) { + /* Update the MD's co-ordinates, which are always in screen space. */ + if (!IsMaster(dev) || !IsFloating(dev)) { DeviceIntPtr master = GetMaster(dev, MASTER_POINTER); master->last.valuators[0] = *screenx; master->last.valuators[1] = *screeny; - master->last.remainder[0] = *screenx_frac; - master->last.remainder[1] = *screeny_frac; - } - - if (dev->valuator) - { - /* Crossed screen? Scale back to device coordiantes */ - if(*screenx != old_screenx) - { - scr = miPointerGetScreen(dev); - *x = rescaleValuatorAxis(*screenx, *screenx_frac, &x_frac, NULL, - dev->valuator->axes + 0, scr->width); - } - if(*screeny != old_screeny) - { - scr = miPointerGetScreen(dev); - *y = rescaleValuatorAxis(*screeny, *screeny_frac, &y_frac, NULL, - dev->valuator->axes + 1, scr->height); - } } - /* dropy x/y (device coordinates) back into valuators for next event */ - dev->last.valuators[0] = *x; - dev->last.valuators[1] = *y; - dev->last.remainder[0] = x_frac; - dev->last.remainder[1] = y_frac; + if (valuator_mask_isset(mask, 0)) + valuator_mask_set_double(mask, 0, x); + if (valuator_mask_isset(mask, 1)) + valuator_mask_set_double(mask, 1, y); } /** @@ -1045,32 +990,37 @@ FreeEventList(InternalEvent *list, int num_events) * back into x/y. */ static void -transform(struct pixman_f_transform *m, int *x, int *y) +transform(struct pixman_f_transform *m, double *x, double *y) { struct pixman_f_vector p = {.v = {*x, *y, 1}}; pixman_f_transform_point(m, &p); - *x = lround(p.v[0]); - *y = lround(p.v[1]); + *x = p.v[0]; + *y = p.v[1]; } static void transformAbsolute(DeviceIntPtr dev, ValuatorMask *mask) { - int x, y, ox, oy; + double x, y, ox, oy; + + if (valuator_mask_isset(mask, 0)) + ox = x = valuator_mask_get_double(mask, 0); + else + ox = x = dev->last.valuators[0]; - ox = x = valuator_mask_isset(mask, 0) ? valuator_mask_get(mask, 0) : - dev->last.valuators[0]; - oy = y = valuator_mask_isset(mask, 1) ? valuator_mask_get(mask, 1) : - dev->last.valuators[1]; + if (valuator_mask_isset(mask, 1)) + oy = y = valuator_mask_get_double(mask, 1); + else + oy = y = dev->last.valuators[1]; transform(&dev->transform, &x, &y); if (valuator_mask_isset(mask, 0) || ox != x) - valuator_mask_set(mask, 0, x); + valuator_mask_set_double(mask, 0, x); if (valuator_mask_isset(mask, 1) || oy != y) - valuator_mask_set(mask, 1, y); + valuator_mask_set_double(mask, 1, y); } /** @@ -1097,42 +1047,25 @@ QueuePointerEvents(DeviceIntPtr device, int type, } /** - * Generate a series of InternalEvents representing pointer motion, or - * button presses. - * - * The DDX is responsible for allocating the events in the first - * place via InitEventList() and GetMaximumEventsNum(), and for freeing it. - * - * In the generated events rootX/Y will be in absolute screen coords and - * the valuator information in the absolute or relative device coords. - * - * last.valuators[x] of the device is always in absolute device coords. - * last.valuators[x] of the master device is in absolute screen coords. + * Helper function for GetPointerEvents, which only generates motion and + * raw motion events for the slave device: does not update the master device. * - * master->last.valuators[x] for x > 2 is undefined. + * Should not be called by anyone other than GetPointerEvents. * * @return the number of events written into events. */ -int -GetPointerEvents(InternalEvent *events, DeviceIntPtr pDev, int type, int buttons, - int flags, const ValuatorMask *mask_in) { - int num_events = 1; - CARD32 ms; +static int +fill_pointer_events(InternalEvent *events, DeviceIntPtr pDev, int type, + int buttons, CARD32 ms, int flags, + const ValuatorMask *mask_in) +{ + int num_events = 1, i; 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; + RawDeviceEvent *raw; + double screenx = 0.0, screeny = 0.0; ScreenPtr scr = miPointerGetScreen(pDev); ValuatorMask mask; - /* refuse events from disabled devices */ - if (!pDev->enabled) - return 0; - - if (!scr) - return 0; - switch (type) { case MotionNotify: @@ -1148,10 +1081,6 @@ GetPointerEvents(InternalEvent *events, DeviceIntPtr pDev, int type, int buttons return 0; } - ms = GetTimeInMillis(); /* before pointer update to help precision */ - - events = UpdateFromMaster(events, pDev, DEVCHANGE_POINTER_EVENT, &num_events); - valuator_mask_copy(&mask, mask_in); if ((flags & POINTER_NORAW) == 0) @@ -1161,61 +1090,54 @@ GetPointerEvents(InternalEvent *events, DeviceIntPtr pDev, int type, int buttons num_events++; init_raw(pDev, raw, ms, type, buttons); - set_raw_valuators(raw, &mask, raw->valuators.data_raw); + set_raw_valuators(raw, &mask, raw->valuators.data_raw); } if (flags & POINTER_ABSOLUTE) { if (flags & POINTER_SCREEN) /* valuators are in screen coords */ { - int scaled; + double scaled; if (valuator_mask_isset(&mask, 0)) { - scaled = rescaleValuatorAxis(valuator_mask_get(&mask, 0), - 0.0, &x_frac, NULL, - pDev->valuator->axes + 0, + scaled = rescaleValuatorAxis(valuator_mask_get_double(&mask, 0), + NULL, pDev->valuator->axes + 0, scr->width); - valuator_mask_set(&mask, 0, scaled); + valuator_mask_set_double(&mask, 0, scaled); } if (valuator_mask_isset(&mask, 1)) { - scaled = rescaleValuatorAxis(valuator_mask_get(&mask, 1), - 0.0, &y_frac, NULL, - pDev->valuator->axes + 1, + scaled = rescaleValuatorAxis(valuator_mask_get_double(&mask, 1), + NULL, pDev->valuator->axes + 1, scr->height); - valuator_mask_set(&mask, 1, scaled); + valuator_mask_set_double(&mask, 1, scaled); } } transformAbsolute(pDev, &mask); - moveAbsolute(pDev, &x, &y, &mask); + moveAbsolute(pDev, &mask); } else { - if (flags & POINTER_ACCELERATE) { + if (flags & POINTER_ACCELERATE) accelPointer(pDev, &mask, ms); - /* The pointer acceleration code modifies the fractional part - * in-place, so we need to extract this information first */ - x_frac = pDev->last.remainder[0]; - y_frac = pDev->last.remainder[1]; - } - moveRelative(pDev, &x, &y, &mask); + moveRelative(pDev, &mask); } if ((flags & POINTER_NORAW) == 0) - set_raw_valuators(raw, &mask, raw->valuators.data); + set_raw_valuators(raw, &mask, raw->valuators.data); - positionSprite(pDev, (flags & POINTER_ABSOLUTE) ? Absolute : Relative, - &x, &y, x_frac, y_frac, scr, &cx, &cy, &cx_frac, &cy_frac); + positionSprite(pDev, (flags & POINTER_ABSOLUTE) ? Absolute : Relative, scr, + &mask, &screenx, &screeny); updateHistory(pDev, &mask, ms); - /* Update the valuators with the true value sent to the client*/ - if (valuator_mask_isset(&mask, 0)) - valuator_mask_set(&mask, 0, x); - if (valuator_mask_isset(&mask, 1)) - valuator_mask_set(&mask, 1, y); - clipValuators(pDev, &mask); + for (i = 0; i < valuator_mask_size(&mask); i++) + { + if (valuator_mask_isset(&mask, i)) + pDev->last.valuators[i] = valuator_mask_get_double(&mask, i); + } + event = &events->device_event; init_device_event(event, pDev, ms); @@ -1235,10 +1157,16 @@ GetPointerEvents(InternalEvent *events, DeviceIntPtr pDev, int type, int buttons 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; + /* root_x and root_y must be in screen co-ordinates */ + event->root_x = trunc(screenx); + event->root_y = trunc(screeny); + event->root_x_frac = screenx - trunc(screenx); + event->root_y_frac = screeny - trunc(screeny); + + if (flags & POINTER_EMULATED) { + raw->flags = XIPointerEmulated; + event->flags = XIPointerEmulated; + } set_valuators(pDev, event, &mask); @@ -1246,6 +1174,204 @@ GetPointerEvents(InternalEvent *events, DeviceIntPtr pDev, int type, int buttons } /** + * Generate events for each scroll axis that changed between before/after + * for the device. + * + * @param events The pointer to the event list to fill the events + * @param dev The device to generate the events for + * @param axis The axis number to generate events for + * @param mask State before this event in absolute coords + * @param[in,out] last Last scroll state posted in absolute coords (modified + * in-place) + * @param ms Current time in ms + * @param max_events Max number of events to be generated + * @return The number of events generated + */ +static int +emulate_scroll_button_events(InternalEvent *events, + DeviceIntPtr dev, + int axis, + const ValuatorMask *mask, + ValuatorMask *last, + CARD32 ms, + int max_events) +{ + AxisInfoPtr ax; + double delta; + double incr; + int num_events = 0; + double total; + int b; + + if (dev->valuator->axes[axis].scroll.type == SCROLL_TYPE_NONE) + return 0; + + if (!valuator_mask_isset(mask, axis)) + return 0; + + ax = &dev->valuator->axes[axis]; + incr = ax->scroll.increment; + + if (!valuator_mask_isset(last, axis)) + valuator_mask_set_double(last, axis, 0); + + delta = valuator_mask_get_double(mask, axis) - valuator_mask_get_double(last, axis); + total = delta; + b = (ax->scroll.type == SCROLL_TYPE_VERTICAL) ? 5 : 7; + + if ((incr > 0 && delta < 0) || + (incr < 0 && delta > 0)) + b--; /* we're scrolling up or left → button 4 or 6 */ + + while (fabs(delta) >= fabs(incr)) + { + int nev_tmp; + + if (delta > 0) + delta -= fabs(incr); + else if (delta < 0) + delta += fabs(incr); + + /* fill_pointer_events() generates four events: one normal and one raw + * event for button press and button release. + * We may get a bigger scroll delta than we can generate events + * for. In that case, we keep decreasing delta, but skip events. + */ + if (num_events + 4 < max_events) + { + nev_tmp = fill_pointer_events(events, dev, ButtonPress, b, ms, + POINTER_EMULATED, NULL); + events += nev_tmp; + num_events += nev_tmp; + nev_tmp = fill_pointer_events(events, dev, ButtonRelease, b, ms, + POINTER_EMULATED, NULL); + events += nev_tmp; + num_events += nev_tmp; + } + } + + /* We emulated, update last.scroll */ + if (total != delta) + { + total -= delta; + valuator_mask_set_double(last, axis, + valuator_mask_get_double(last, axis) + total); + } + + return num_events; +} + + +/** + * Generate a complete series of InternalEvents (filled into the EventList) + * representing pointer motion, or button presses. If the device is a slave + * device, also potentially generate a DeviceClassesChangedEvent to update + * the master device. + * + * 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(InternalEvent *events, DeviceIntPtr pDev, int type, + int buttons, int flags, const ValuatorMask *mask_in) +{ + CARD32 ms = GetTimeInMillis(); + int num_events = 0, nev_tmp; + int h_scroll_axis = pDev->valuator->h_scroll_axis; + int v_scroll_axis = pDev->valuator->v_scroll_axis; + ValuatorMask mask; + ValuatorMask scroll; + int i; + + /* refuse events from disabled devices */ + if (!pDev->enabled) + return 0; + + if (!miPointerGetScreen(pDev)) + return 0; + + events = UpdateFromMaster(events, pDev, DEVCHANGE_POINTER_EVENT, + &num_events); + + valuator_mask_copy(&mask, mask_in); + + /* Turn a scroll button press into a smooth-scrolling event if + * necessary. This only needs to cater for the XIScrollFlagPreferred + * axis (if more than one scrolling axis is present) */ + if (type == ButtonPress) + { + double val, adj; + int axis; + + switch (buttons) { + case 4: + adj = 1.0; + axis = v_scroll_axis; + break; + case 5: + adj = -1.0; + axis = v_scroll_axis; + break; + case 6: + adj = 1.0; + axis = h_scroll_axis; + break; + case 7: + adj = -1.0; + axis = h_scroll_axis; + break; + default: + adj = 0.0; + axis = -1; + break; + } + + if (adj != 0.0 && axis != -1) + { + adj *= pDev->valuator->axes[axis].scroll.increment; + val = valuator_mask_get_double(&mask, axis) + adj; + valuator_mask_set_double(&mask, axis, val); + type = MotionNotify; + buttons = 0; + } + } + + /* First fill out the original event set, with smooth-scrolling axes. */ + nev_tmp = fill_pointer_events(events, pDev, type, buttons, ms, flags, + &mask); + events += nev_tmp; + num_events += nev_tmp; + + valuator_mask_zero(&scroll); + + /* Now turn the smooth-scrolling axes back into emulated button presses + * for legacy clients, based on the integer delta between before and now */ + for (i = 0; i < valuator_mask_size(&mask); i++) { + if (!valuator_mask_isset(&mask, i)) + continue; + + valuator_mask_set_double(&scroll, i, pDev->last.valuators[i]); + + nev_tmp = emulate_scroll_button_events(events, pDev, i, &scroll, + pDev->last.scroll, ms, + GetMaximumEventsNum() - num_events); + events += nev_tmp; + num_events += nev_tmp; + } + + return num_events; +} + +/** * Generate internal events representing this proximity event and enqueue * them on the event queue. * |