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/*
ChibiOS/GFX - Copyright (C) 2012
Joel Bodenmann aka Tectu <joel@unormal.org>
This file is part of ChibiOS/GFX.
ChibiOS/GFX is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/GFX is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file src/ginput/mouse.c
* @brief GINPUT mouse/touch code.
*
* @defgroup Mouse Mouse
* @ingroup GINPUT
* @{
*/
#include "ch.h"
#include "hal.h"
#include "gfx.h"
#if (GFX_USE_GINPUT && GINPUT_NEED_MOUSE) || defined(__DOXYGEN__)
#include "ginput/lld/mouse.h"
#if GINPUT_MOUSE_NEED_CALIBRATION
#if !defined(GFX_USE_GDISP) || !GFX_USE_GDISP
#error "GINPUT: GFX_USE_GDISP must be defined when mouse or touch calibration is required"
#endif
#define GINPUT_MOUSE_CALIBRATION_FONT "* Double"
#define GINPUT_MOUSE_CALIBRATION_FONT2 "* Narrow"
#define GINPUT_MOUSE_CALIBRATION_TEXT "Calibration"
#define GINPUT_MOUSE_CALIBRATION_ERROR_TEXT "Failed - Please try again!"
#define GINPUT_MOUSE_CALIBRATION_SAME_TEXT "Error: Same Reading - Check Driver!"
#if GINPUT_MOUSE_MAX_CALIBRATION_ERROR < 0
#define GINPUT_MOUSE_CALIBRATION_POINTS 3
#else
#define GINPUT_MOUSE_CALIBRATION_POINTS 4
#endif
typedef struct Calibration_t {
float ax;
float bx;
float cx;
float ay;
float by;
float cy;
} Calibration;
#endif
typedef struct MousePoint_t {
coord_t x, y;
} MousePoint;
static GTIMER_DECL(MouseTimer);
static struct MouseConfig_t {
MouseReading t;
MousePoint movepos;
MousePoint clickpos;
systime_t clicktime;
uint16_t last_buttons;
uint16_t flags;
#define FLG_INIT_DONE 0x8000
#define FLG_CLICK_TIMER 0x0001
#define FLG_IN_CAL 0x0010
#define FLG_CAL_OK 0x0020
#define FLG_CAL_SAVED 0x0040
#define FLG_CAL_FREE 0x0080
#if GINPUT_MOUSE_NEED_CALIBRATION
GMouseCalibrationSaveRoutine fnsavecal;
GMouseCalibrationLoadRoutine fnloadcal;
Calibration caldata;
#endif
} MouseConfig;
#if GINPUT_MOUSE_NEED_CALIBRATION
static __inline void _tsDrawCross(const MousePoint *pp) {
gdispDrawLine(pp->x-15, pp->y, pp->x-2, pp->y, White);
gdispDrawLine(pp->x+2, pp->y, pp->x+15, pp->y, White);
gdispDrawLine(pp->x, pp->y-15, pp->x, pp->y-2, White);
gdispDrawLine(pp->x, pp->y+2, pp->x, pp->y+15, White);
gdispDrawLine(pp->x-15, pp->y+15, pp->x-7, pp->y+15, RGB2COLOR(184,158,131));
gdispDrawLine(pp->x-15, pp->y+7, pp->x-15, pp->y+15, RGB2COLOR(184,158,131));
gdispDrawLine(pp->x-15, pp->y-15, pp->x-7, pp->y-15, RGB2COLOR(184,158,131));
gdispDrawLine(pp->x-15, pp->y-7, pp->x-15, pp->y-15, RGB2COLOR(184,158,131));
gdispDrawLine(pp->x+7, pp->y+15, pp->x+15, pp->y+15, RGB2COLOR(184,158,131));
gdispDrawLine(pp->x+15, pp->y+7, pp->x+15, pp->y+15, RGB2COLOR(184,158,131));
gdispDrawLine(pp->x+7, pp->y-15, pp->x+15, pp->y-15, RGB2COLOR(184,158,131));
gdispDrawLine(pp->x+15, pp->y-15, pp->x+15, pp->y-7, RGB2COLOR(184,158,131));
}
static __inline void _tsClearCross(const MousePoint *pp) {
gdispFillArea(pp->x - 15, pp->y - 15, 42, 42, Blue);
}
static __inline void _tsTransform(MouseReading *pt, const Calibration *c) {
pt->x = (coord_t) (c->ax * pt->x + c->bx * pt->y + c->cx);
pt->y = (coord_t) (c->ay * pt->x + c->by * pt->y + c->cy);
}
static __inline void _tsDo3PointCalibration(const MousePoint *cross, const MousePoint *points, Calibration *c) {
float dx, dx0, dx1, dx2, dy0, dy1, dy2;
/* Compute all the required determinants */
dx = ((float)(points[0].x - points[2].x)) * ((float)(points[1].y - points[2].y))
- ((float)(points[1].x - points[2].x)) * ((float)(points[0].y - points[2].y));
dx0 = ((float)(cross[0].x - cross[2].x)) * ((float)(points[1].y - points[2].y))
- ((float)(cross[1].x - cross[2].x)) * ((float)(points[0].y - points[2].y));
dx1 = ((float)(cross[1].x - cross[2].x)) * ((float)(points[0].x - points[2].x))
- ((float)(cross[0].x - cross[2].x)) * ((float)(points[1].x - points[2].x));
dx2 = cross[0].x * ((float)points[1].x * (float)points[2].y - (float)points[2].x * (float)points[1].y) -
cross[1].x * ((float)points[0].x * (float)points[2].y - (float)points[2].x * (float)points[0].y) +
cross[2].x * ((float)points[0].x * (float)points[1].y - (float)points[1].x * (float)points[0].y);
dy0 = ((float)(cross[0].y - cross[2].y)) * ((float)(points[1].y - points[2].y))
- ((float)(cross[1].y - cross[2].y)) * ((float)(points[0].y - points[2].y));
dy1 = ((float)(cross[1].y - cross[2].y)) * ((float)(points[0].x - points[2].x))
- ((float)(cross[0].y - cross[2].y)) * ((float)(points[1].x - points[2].x));
dy2 = cross[0].y * ((float)points[1].x * (float)points[2].y - (float)points[2].x * (float)points[1].y) -
cross[1].y * ((float)points[0].x * (float)points[2].y - (float)points[2].x * (float)points[0].y) +
cross[2].y * ((float)points[0].x * (float)points[1].y - (float)points[1].x * (float)points[0].y);
/* Now, calculate all the required coefficients */
c->ax = dx0 / dx;
c->bx = dx1 / dx;
c->cx = dx2 / dx;
c->ay = dy0 / dx;
c->by = dy1 / dx;
c->cy = dy2 / dx;
}
#endif
#if GINPUT_MOUSE_READ_CYCLES > 1
static void get_raw_reading(MouseReading *pt) {
int32_t x, y, z;
unsigned i;
x = y = z = 0;
for(i = 0; i < GINPUT_MOUSE_READ_CYCLES; i++) {
ginput_lld_mouse_get_reading(pt);
x += pt->x;
y += pt->y;
z += pt->z;
}
/* Take the average of the readings */
pt->x = x / GINPUT_MOUSE_READ_CYCLES;
pt->y = y / GINPUT_MOUSE_READ_CYCLES;
pt->z = z / GINPUT_MOUSE_READ_CYCLES;
}
#else
#define get_raw_reading(pt) ginput_lld_mouse_get_reading(pt)
#endif
static void get_calibrated_reading(MouseReading *pt) {
#if GINPUT_MOUSE_NEED_CALIBRATION || GDISP_NEED_CONTROL
coord_t w, h;
#endif
get_raw_reading(pt);
#if GINPUT_MOUSE_NEED_CALIBRATION || GDISP_NEED_CONTROL
w = gdispGetWidth();
h = gdispGetHeight();
#endif
#if GINPUT_MOUSE_NEED_CALIBRATION
_tsTransform(pt, &MouseConfig.caldata);
#endif
#if GDISP_NEED_CONTROL
switch(gdispGetOrientation()) {
case GDISP_ROTATE_0:
break;
case GDISP_ROTATE_90:
{
coord_t t = pt->y;
pt->y = h - 1 - pt->x;
pt->x = t;
}
break;
case GDISP_ROTATE_180:
pt->x = w - 1 - pt->x;
pt->y = h - 1 - pt->y;
break;
case GDISP_ROTATE_270:
{
coord_t t = pt->x;
pt->x = w - 1 - pt->y;
pt->y = t;
}
break;
}
#endif
#if GINPUT_MOUSE_NEED_CALIBRATION
if (pt->x < 0) pt->x = 0;
else if (pt->x >= w) pt->x = w-1;
if (pt->y < 0) pt->y = 0;
else if (pt->y >= h) pt->y = h-1;
#endif
}
static void MousePoll(void *param) {
(void) param;
GSourceListener *psl;
GEventMouse *pe;
unsigned meta;
uint16_t tbtns;
uint32_t cdiff;
uint32_t mdiff;
// Save the last mouse state
MouseConfig.last_buttons = MouseConfig.t.buttons;
// Get the new mouse reading
get_calibrated_reading(&MouseConfig.t);
// Calculate out new event meta value and handle CLICK and CXTCLICK
meta = GMETA_NONE;
// Calculate the position difference from our movement reference (update the reference if out of range)
mdiff = (MouseConfig.t.x - MouseConfig.movepos.x) * (MouseConfig.t.x - MouseConfig.movepos.x) +
(MouseConfig.t.y - MouseConfig.movepos.y) * (MouseConfig.t.y - MouseConfig.movepos.y);
if (mdiff > GINPUT_MOUSE_MAX_MOVE_JITTER * GINPUT_MOUSE_MAX_MOVE_JITTER) {
MouseConfig.movepos.x = MouseConfig.t.x;
MouseConfig.movepos.y = MouseConfig.t.y;
}
// Check if the click has moved outside the click area and if so cancel the click
if ((MouseConfig.flags & FLG_CLICK_TIMER)) {
cdiff = (MouseConfig.t.x - MouseConfig.clickpos.x) * (MouseConfig.t.x - MouseConfig.clickpos.x) +
(MouseConfig.t.y - MouseConfig.clickpos.y) * (MouseConfig.t.y - MouseConfig.clickpos.y);
if (cdiff > GINPUT_MOUSE_MAX_CLICK_JITTER * GINPUT_MOUSE_MAX_CLICK_JITTER)
MouseConfig.flags &= ~FLG_CLICK_TIMER;
}
// Mouse down
tbtns = MouseConfig.t.buttons & ~MouseConfig.last_buttons;
if ((tbtns & GINPUT_MOUSE_BTN_LEFT))
meta |= GMETA_MOUSE_DOWN;
if ((tbtns & (GINPUT_MOUSE_BTN_LEFT|GINPUT_MOUSE_BTN_RIGHT))) {
MouseConfig.clickpos.x = MouseConfig.t.x;
MouseConfig.clickpos.y = MouseConfig.t.y;
MouseConfig.clicktime = chTimeNow();
MouseConfig.flags |= FLG_CLICK_TIMER;
}
// Mouse up
tbtns = ~MouseConfig.t.buttons & MouseConfig.last_buttons;
if ((tbtns & GINPUT_MOUSE_BTN_LEFT))
meta |= GMETA_MOUSE_UP;
if ((tbtns & (GINPUT_MOUSE_BTN_LEFT|GINPUT_MOUSE_BTN_RIGHT))) {
if ((MouseConfig.flags & FLG_CLICK_TIMER)) {
if ((tbtns & GINPUT_MOUSE_BTN_LEFT)
#if GINPUT_MOUSE_CLICK_TIME != TIME_INFINITE
&& chTimeNow() - MouseConfig.clicktime < MS2ST(GINPUT_MOUSE_CLICK_TIME)
#endif
)
meta |= GMETA_MOUSE_CLICK;
else
meta |= GMETA_MOUSE_CXTCLICK;
MouseConfig.flags &= ~FLG_CLICK_TIMER;
}
}
// Send the event to the listeners that are interested.
psl = 0;
while ((psl = geventGetSourceListener((GSourceHandle)(&MouseConfig), psl))) {
if (!(pe = (GEventMouse *)geventGetEventBuffer(psl))) {
// This listener is missing - save the meta events that have happened
psl->srcflags |= meta;
continue;
}
// If we haven't really moved (and there are no meta events) don't bother sending the event
if (mdiff <= GINPUT_MOUSE_MAX_MOVE_JITTER * GINPUT_MOUSE_MAX_MOVE_JITTER && !psl->srcflags && !meta && !(psl->listenflags & GLISTEN_MOUSENOFILTER))
continue;
// Send the event if we are listening for it
if (((MouseConfig.t.buttons & GINPUT_MOUSE_BTN_LEFT) && (psl->listenflags & GLISTEN_MOUSEDOWNMOVES))
|| (!(MouseConfig.t.buttons & GINPUT_MOUSE_BTN_LEFT) && (psl->listenflags & GLISTEN_MOUSEUPMOVES))
|| (meta && (psl->listenflags & GLISTEN_MOUSEMETA))) {
pe->type = GINPUT_MOUSE_EVENT_TYPE;
pe->instance = 0;
pe->x = MouseConfig.t.x;
pe->y = MouseConfig.t.y;
pe->z = MouseConfig.t.z;
pe->current_buttons = MouseConfig.t.buttons;
pe->last_buttons = MouseConfig.last_buttons;
pe->meta = meta;
if (psl->srcflags) {
pe->current_buttons |= GINPUT_MISSED_MOUSE_EVENT;
pe->meta |= psl->srcflags;
psl->srcflags = 0;
}
geventSendEvent(psl);
}
}
}
GSourceHandle ginputGetMouse(uint16_t instance) {
#if GINPUT_MOUSE_NEED_CALIBRATION
Calibration *pc;
#endif
// We only support a single mouse instance currently
// Instance 9999 is the same as instance 0 except that it installs
// a special "raw" calibration if there isn't one we can load.
if (instance && instance != 9999)
return 0;
// Do we need to initialise the mouse subsystem?
if (!(MouseConfig.flags & FLG_INIT_DONE)) {
ginput_lld_mouse_init();
#if GINPUT_MOUSE_NEED_CALIBRATION
#if GINPUT_MOUSE_LLD_CALIBRATION_LOADSAVE
if (!MouseConfig.fnloadcal) {
MouseConfig.fnloadcal = ginput_lld_mouse_calibration_load;
MouseConfig.flags &= ~FLG_CAL_FREE;
}
if (!MouseConfig.fnsavecal)
MouseConfig.fnsavecal = ginput_lld_mouse_calibration_save;
#endif
if (MouseConfig.fnloadcal && (pc = (Calibration *)MouseConfig.fnloadcal(instance))) {
MouseConfig.caldata = pc[0];
MouseConfig.flags |= (FLG_CAL_OK|FLG_CAL_SAVED);
if ((MouseConfig.flags & FLG_CAL_FREE))
chHeapFree((void *)pc);
} else if (instance == 9999) {
MouseConfig.caldata.ax = 1;
MouseConfig.caldata.bx = 0;
MouseConfig.caldata.cx = 0;
MouseConfig.caldata.ay = 0;
MouseConfig.caldata.by = 1;
MouseConfig.caldata.cy = 0;
MouseConfig.flags |= (FLG_CAL_OK|FLG_CAL_SAVED);
} else
ginputCalibrateMouse(instance);
#endif
// Get the first reading
MouseConfig.last_buttons = 0;
get_calibrated_reading(&MouseConfig.t);
// Mark init as done and start the Poll timer
MouseConfig.flags |= FLG_INIT_DONE;
gtimerStart(&MouseTimer, MousePoll, 0, TRUE, GINPUT_MOUSE_POLL_PERIOD);
}
// Return our structure as the handle
return (GSourceHandle)&MouseConfig;
}
bool_t ginputGetMouseStatus(uint16_t instance, GEventMouse *pe) {
if (instance || (MouseConfig.flags & (FLG_INIT_DONE|FLG_IN_CAL)) != FLG_INIT_DONE)
return FALSE;
pe->type = GINPUT_MOUSE_EVENT_TYPE;
pe->instance = instance;
pe->x = MouseConfig.t.x;
pe->y = MouseConfig.t.y;
pe->z = MouseConfig.t.z;
pe->current_buttons = MouseConfig.t.buttons;
pe->last_buttons = MouseConfig.last_buttons;
if (pe->current_buttons & ~pe->last_buttons & GINPUT_MOUSE_BTN_LEFT)
pe->meta = GMETA_MOUSE_DOWN;
else if (~pe->current_buttons & pe->last_buttons & GINPUT_MOUSE_BTN_LEFT)
pe->meta = GMETA_MOUSE_UP;
else
pe->meta = GMETA_NONE;
return TRUE;
}
bool_t ginputCalibrateMouse(uint16_t instance) {
#if !GINPUT_MOUSE_NEED_CALIBRATION
(void) instance;
return FALSE;
#else
const coord_t height = gdispGetHeight();
const coord_t width = gdispGetWidth();
const MousePoint cross[] = {{(width / 4), (height / 4)},
{(width - (width / 4)) , (height / 4)},
{(width - (width / 4)) , (height - (height / 4))},
{(width / 2), (height / 2)}}; /* Check point */
MousePoint points[GINPUT_MOUSE_CALIBRATION_POINTS];
const MousePoint *pc;
MousePoint *pt;
int32_t px, py;
unsigned i, j;
font_t font1, font2;
#if GINPUT_MOUSE_MAX_CALIBRATION_ERROR >= 0
unsigned err;
#endif
if (instance || (MouseConfig.flags & FLG_IN_CAL))
return FALSE;
font1 = gdispOpenFont(GINPUT_MOUSE_CALIBRATION_FONT);
font2 = gdispOpenFont(GINPUT_MOUSE_CALIBRATION_FONT2);
MouseConfig.flags |= FLG_IN_CAL;
gtimerStop(&MouseTimer);
MouseConfig.flags &= ~(FLG_CAL_OK|FLG_CAL_SAVED);
#if GDISP_NEED_CONTROL
gdispSetOrientation(GDISP_ROTATE_0);
#endif
#if GDISP_NEED_CLIP
gdispSetClip(0, 0, width, height);
#endif
#if GINPUT_MOUSE_MAX_CALIBRATION_ERROR >= 0
while(1) {
#endif
gdispClear(Blue);
gdispFillStringBox(0, 5, width, 30, GINPUT_MOUSE_CALIBRATION_TEXT, font1, White, Blue, justifyCenter);
for(i = 0, pt = points, pc = cross; i < GINPUT_MOUSE_CALIBRATION_POINTS; i++, pt++, pc++) {
_tsDrawCross(pc);
do {
/* Wait for the mouse to be pressed */
while(get_raw_reading(&MouseConfig.t), !(MouseConfig.t.buttons & GINPUT_MOUSE_BTN_LEFT))
chThdSleepMilliseconds(20);
/* Average all the samples while the mouse is down */
for(px = py = 0, j = 0;
chThdSleepMilliseconds(20), /* Settling time between readings */
get_raw_reading(&MouseConfig.t),
(MouseConfig.t.buttons & GINPUT_MOUSE_BTN_LEFT);
j++) {
px += MouseConfig.t.x;
py += MouseConfig.t.y;
}
} while(!j);
pt->x = px / j;
pt->y = py / j;
_tsClearCross(pc);
if (i >= 1 && pt->x == (pt-1)->x && pt->y == (pt-1)->y) {
gdispFillStringBox(0, 35, width, 40, GINPUT_MOUSE_CALIBRATION_SAME_TEXT, font2, Red, Yellow, justifyCenter);
chThdSleepMilliseconds(5000);
gdispFillArea(0, 35, width, 40, Blue);
}
}
/* Apply 3 point calibration algorithm */
_tsDo3PointCalibration(cross, points, &MouseConfig.caldata);
/* Verification of correctness of calibration (optional) :
* See if the 4th point (Middle of the screen) coincides with the calibrated
* result. If point is within +/- Squareroot(ERROR) pixel margin, then successful calibration
* Else, start from the beginning.
*/
#if GINPUT_MOUSE_MAX_CALIBRATION_ERROR >= 0
/* Transform the co-ordinates */
MouseConfig.t.x = points[3].x;
MouseConfig.t.y = points[3].y;
_tsTransform(&MouseConfig.t, &MouseConfig.caldata);
/* Calculate the delta */
err = (MouseConfig.t.x - cross[3].x) * (MouseConfig.t.x - cross[3].x) +
(MouseConfig.t.y - cross[3].y) * (MouseConfig.t.y - cross[3].y);
if (err <= GINPUT_MOUSE_MAX_CALIBRATION_ERROR * GINPUT_MOUSE_MAX_CALIBRATION_ERROR)
break;
gdispFillStringBox(0, 35, width, 40, GINPUT_MOUSE_CALIBRATION_ERROR_TEXT, font2, Red, Yellow, justifyCenter);
chThdSleepMilliseconds(5000);
}
#endif
// Restart everything
gdispCloseFont(font1);
gdispCloseFont(font2);
MouseConfig.flags |= FLG_CAL_OK;
MouseConfig.last_buttons = 0;
get_calibrated_reading(&MouseConfig.t);
MouseConfig.flags &= ~FLG_IN_CAL;
if ((MouseConfig.flags & FLG_INIT_DONE))
gtimerStart(&MouseTimer, MousePoll, 0, TRUE, GINPUT_MOUSE_POLL_PERIOD);
// Save the calibration data (if possible)
if (MouseConfig.fnsavecal) {
MouseConfig.fnsavecal(instance, (const uint8_t *)&MouseConfig.caldata, sizeof(MouseConfig.caldata));
MouseConfig.flags |= FLG_CAL_SAVED;
}
return TRUE;
#endif
}
/* Set the routines to save and fetch calibration data.
* This function should be called before first calling ginputGetMouse() for a particular instance
* as the gdispGetMouse() routine may attempt to fetch calibration data and perform a startup calibration if there is no way to get it.
* If this is called after gdispGetMouse() has been called and the driver requires calibration storage, it will immediately save the data is has already obtained.
* The 'requireFree' parameter indicates if the fetch buffer must be free()'d to deallocate the buffer provided by the Fetch routine.
*/
void ginputSetMouseCalibrationRoutines(uint16_t instance, GMouseCalibrationSaveRoutine fnsave, GMouseCalibrationLoadRoutine fnload, bool_t requireFree) {
#if GINPUT_MOUSE_NEED_CALIBRATION
if (instance)
return;
MouseConfig.fnloadcal = fnload;
MouseConfig.fnsavecal = fnsave;
if (requireFree)
MouseConfig.flags |= FLG_CAL_FREE;
else
MouseConfig.flags &= ~FLG_CAL_FREE;
#if GINPUT_MOUSE_LLD_CALIBRATION_LOADSAVE
if (!MouseConfig.fnloadcal) {
MouseConfig.fnloadcal = ginput_lld_mouse_calibration_load;
MouseConfig.flags &= ~FLG_CAL_FREE;
}
if (!MouseConfig.fnsavecal)
MouseConfig.fnsavecal = ginput_lld_mouse_calibration_save;
#endif
if (MouseConfig.fnsavecal && (MouseConfig.flags & (FLG_CAL_OK|FLG_CAL_SAVED)) == FLG_CAL_OK) {
MouseConfig.fnsavecal(instance, (const uint8_t *)&MouseConfig.caldata, sizeof(MouseConfig.caldata));
MouseConfig.flags |= FLG_CAL_SAVED;
}
#else
(void)instance, (void)fnsave, (void)fnload, (void)requireFree;
#endif
}
/* Test if a particular mouse instance requires routines to save its calibration data. */
bool_t ginputRequireMouseCalibrationStorage(uint16_t instance) {
if (instance)
return FALSE;
#if GINPUT_MOUSE_NEED_CALIBRATION && !GINPUT_MOUSE_LLD_CALIBRATION_LOADSAVE
return TRUE;
#else
return FALSE;
#endif
}
/* Wake up the mouse driver from an interrupt service routine (there may be new readings available) */
void ginputMouseWakeup(void) {
gtimerJab(&MouseTimer);
}
/* Wake up the mouse driver from an interrupt service routine (there may be new readings available) */
void ginputMouseWakeupI(void) {
gtimerJabI(&MouseTimer);
}
#endif /* GFX_USE_GINPUT && GINPUT_NEED_MOUSE */
/** @} */
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