/* Returns non-zero when the event should be consumed */
static int vk_modify(struct ev *e, struct input_event *ev)
{
static int downX = -1, downY = -1;
static int discard = 0;
static int last_virt_key = 0;
static int lastWasSynReport = 0;
static int touchReleaseOnNextSynReport = 0;
static int use_tracking_id_negative_as_touch_release = 0; // On some devices, type: 3 code: 39 value: -1, aka EV_ABS ABS_MT_TRACKING_ID -1 indicates a true touch release
int i;
int x, y;
// This is used to ditch useless event handlers, like an accelerometer
if (e->ignored) return 1;
if (ev->type == EV_REL && ev->code == REL_Z)
{
// This appears to be an accelerometer or another strange input device. It's not the touchscreen.
#ifdef _EVENT_LOGGING
printf("EV: Device disabled due to non-touchscreen messages.\n");
#endif
e->ignored = 1;
return 1;
}
#ifdef _EVENT_LOGGING
printf("EV: %s => type: %x code: %x value: %d\n", e->deviceName, ev->type, ev->code, ev->value);
#endif
// Handle keyboard events, value of 1 indicates key down, 0 indicates key up
if (ev->type == EV_KEY) {
return 0;
}
if (ev->type == EV_ABS) {
switch (ev->code) {
case ABS_X: //00
e->p.synced |= 0x01;
e->p.x = ev->value;
#ifdef _EVENT_LOGGING
printf("EV: %s => EV_ABS ABS_X %d\n", e->deviceName, ev->value);
#endif
break;
case ABS_Y: //01
e->p.synced |= 0x02;
e->p.y = ev->value;
#ifdef _EVENT_LOGGING
printf("EV: %s => EV_ABS ABS_Y %d\n", e->deviceName, ev->value);
#endif
break;
case ABS_MT_POSITION: //2a
e->mt_p.synced = 0x03;
if (ev->value == (1 << 31))
{
e->mt_p.x = 0;
e->mt_p.y = 0;
lastWasSynReport = 1;
}
else
{
lastWasSynReport = 0;
e->mt_p.x = (ev->value & 0x7FFF0000) >> 16;
e->mt_p.y = (ev->value & 0xFFFF);
}
break;
case ABS_MT_TOUCH_MAJOR: //30
if (ev->value == 0)
{
#ifndef TW_IGNORE_MAJOR_AXIS_0
// We're in a touch release, although some devices will still send positions as well
e->mt_p.x = 0;
e->mt_p.y = 0;
touchReleaseOnNextSynReport = 1;
#endif
}
#ifdef _EVENT_LOGGING
printf("EV: %s => EV_ABS ABS_MT_TOUCH_MAJOR %d\n", e->deviceName, ev->value);
#endif
break;
case ABS_MT_PRESSURE: //3a
if (ev->value == 0)
{
// We're in a touch release, although some devices will still send positions as well
e->mt_p.x = 0;
e->mt_p.y = 0;
touchReleaseOnNextSynReport = 1;
}
#ifdef _EVENT_LOGGING
printf("EV: %s => EV_ABS ABS_MT_PRESSURE %d\n", e->deviceName, ev->value);
#endif
break;
case ABS_MT_POSITION_X: //35
e->mt_p.synced |= 0x01;
e->mt_p.x = ev->value;
#ifdef _EVENT_LOGGING
printf("EV: %s => EV_ABS ABS_MT_POSITION_X %d\n", e->deviceName, ev->value);
#endif
break;
case ABS_MT_POSITION_Y: //36
e->mt_p.synced |= 0x02;
e->mt_p.y = ev->value;
#ifdef _EVENT_LOGGING
printf("EV: %s => EV_ABS ABS_MT_POSITION_Y %d\n", e->deviceName, ev->value);
#endif
break;
case ABS_MT_TOUCH_MINOR: //31
#ifdef _EVENT_LOGGING
printf("EV: %s => EV_ABS ABS_MT_TOUCH_MINOR %d\n", e->deviceName, ev->value);
#endif
break;
case ABS_MT_WIDTH_MAJOR: //32
#ifdef _EVENT_LOGGING
printf("EV: %s => EV_ABS ABS_MT_WIDTH_MAJOR %d\n", e->deviceName, ev->value);
#endif
break;
case ABS_MT_WIDTH_MINOR: //33
#ifdef _EVENT_LOGGING
printf("EV: %s => EV_ABS ABS_MT_WIDTH_MINOR %d\n", e->deviceName, ev->value);
#endif
break;
case ABS_MT_TRACKING_ID: //39
if (ev->value < 0) {
e->mt_p.x = 0;
e->mt_p.y = 0;
touchReleaseOnNextSynReport = 2;
use_tracking_id_negative_as_touch_release = 1;
#ifdef _EVENT_LOGGING
if (use_tracking_id_negative_as_touch_release)
printf("using ABS_MT_TRACKING_ID value -1 to indicate touch releases\n");
#endif
}
#ifdef _EVENT_LOGGING
printf("EV: %s => EV_ABS ABS_MT_TRACKING_ID %d\n", e->deviceName, ev->value);
#endif
break;
#ifdef _EVENT_LOGGING
// These are for touch logging purposes only
case ABS_MT_ORIENTATION: //34
printf("EV: %s => EV_ABS ABS_MT_ORIENTATION %d\n", e->deviceName, ev->value);
return 1;
break;
case ABS_MT_TOOL_TYPE: //37
LOGI("EV: %s => EV_ABS ABS_MT_TOOL_TYPE %d\n", e->deviceName, ev->value);
return 1;
break;
case ABS_MT_BLOB_ID: //38
printf("EV: %s => EV_ABS ABS_MT_BLOB_ID %d\n", e->deviceName, ev->value);
return 1;
break;
case ABS_MT_DISTANCE: //3b
printf("EV: %s => EV_ABS ABS_MT_DISTANCE %d\n", e->deviceName, ev->value);
return 1;
break;
#endif
default:
// This is an unhandled message, just skip it
return 1;
}
if (ev->code != ABS_MT_POSITION)
{
lastWasSynReport = 0;
return 1;
}
}
// Check if we should ignore the message
if (ev->code != ABS_MT_POSITION && (ev->type != EV_SYN || (ev->code != SYN_REPORT && ev->code != SYN_MT_REPORT)))
{
lastWasSynReport = 0;
return 0;
}
#ifdef _EVENT_LOGGING
if (ev->type == EV_SYN && ev->code == SYN_REPORT) printf("EV: %s => EV_SYN SYN_REPORT\n", e->deviceName);
if (ev->type == EV_SYN && ev->code == SYN_MT_REPORT) printf("EV: %s => EV_SYN SYN_MT_REPORT\n", e->deviceName);
#endif
// Discard the MT versions
if (ev->code == SYN_MT_REPORT) return 0;
if (((lastWasSynReport == 1 || touchReleaseOnNextSynReport == 1) && !use_tracking_id_negative_as_touch_release) || (use_tracking_id_negative_as_touch_release && touchReleaseOnNextSynReport == 2))
{
// Reset the value
touchReleaseOnNextSynReport = 0;
// We are a finger-up state
if (!discard)
{
// Report the key up
ev->type = EV_ABS;
ev->code = 0;
ev->value = (downX << 16) | downY;
}
downX = -1;
downY = -1;
if (discard)
{
discard = 0;
// Send the keyUp event
ev->type = EV_KEY;
ev->code = last_virt_key;
ev->value = 0;
}
return 0;
}
lastWasSynReport = 1;
// Retrieve where the x,y position is
if (e->p.synced & 0x03)
{
vk_tp_to_screen(&e->p, &x, &y);
}
else if (e->mt_p.synced & 0x03)
{
vk_tp_to_screen(&e->mt_p, &x, &y);
}
else
{
// We don't have useful information to convey
return 1;
}
#ifdef RECOVERY_TOUCHSCREEN_SWAP_XY
x ^= y;
y ^= x;
x ^= y;
#endif
#ifdef RECOVERY_TOUCHSCREEN_FLIP_X
x = gr_fb_width() - x;
#endif
#ifdef RECOVERY_TOUCHSCREEN_FLIP_Y
y = gr_fb_height() - y;
#endif
#ifdef TW_HAS_LANDSCAPE
switch(gr_get_rotation())
{
case 0:
default:
break;
case 90:
#ifdef RECOVERY_TOUCHSCREEN_FLIP_X
x = gr_fb_width() - x;
#endif
#ifdef RECOVERY_TOUCHSCREEN_FLIP_Y
y = gr_fb_height() - y;
#endif
x ^= y;
y ^= x;
x ^= y;
#ifndef RECOVERY_TOUCHSCREEN_FLIP_X
y = gr_fb_height() - y;
#endif
break;
case 180:
y = gr_fb_height() - y;
x = gr_fb_width() - x;
break;
case 270:
#ifdef RECOVERY_TOUCHSCREEN_FLIP_X
x = gr_fb_width() - x;
#endif
#ifdef RECOVERY_TOUCHSCREEN_FLIP_Y
y = gr_fb_height() - y;
#endif
x ^= y;
y ^= x;
x ^= y;
#ifdef RECOVERY_TOUCHSCREEN_FLIP_X
y = gr_fb_height() - y;
#endif
#ifndef RECOVERY_TOUCHSCREEN_FLIP_Y
x = gr_fb_width() - x;
#endif
break;
}
#endif
#ifdef _EVENT_LOGGING
printf("EV: x: %d y: %d\n", x, y);
#endif
// Clear the current sync states
e->p.synced = e->mt_p.synced = 0;
// If we have nothing useful to report, skip it
if (x == -1 || y == -1) return 1;
// On first touch, see if we're at a virtual key
if (downX == -1)
{
// Attempt mapping to virtual key
for (i = 0; i < e->vk_count; ++i)
{
int xd = ABS(e->vks[i].centerx - x);
int yd = ABS(e->vks[i].centery - y);
if (xd < e->vks[i].width/2 && yd < e->vks[i].height/2)
{
ev->type = EV_KEY;
ev->code = e->vks[i].scancode;
ev->value = 1;
last_virt_key = e->vks[i].scancode;
vibrate(VIBRATOR_TIME_MS);
// Mark that all further movement until lift is discard,
// and make sure we don't come back into this area
discard = 1;
downX = 0;
return 0;
}
}
}
// If we were originally a button press, discard this event
if (discard)
{
return 1;
}
// Record where we started the touch for deciding if this is a key or a scroll
downX = x;
downY = y;
ev->type = EV_ABS;
ev->code = 1;
ev->value = (x << 16) | y;
return 0;
}
/* Returns non-zero when the event should be consumed */
static int vk_modify(struct ev *e, struct input_event *ev)
{
int i;
int x, y;
if (ev->type == EV_KEY) {
if (ev->code == BTN_TOUCH)
e->p.pressed = ev->value;
return 0;
}
if (ev->type == EV_ABS) {
switch (ev->code) {
case ABS_X:
e->p.x = ev->value;
return !vk_inside_display(e->p.x, &e->p.xi, gr_fb_width());
case ABS_Y:
e->p.y = ev->value;
return !vk_inside_display(e->p.y, &e->p.yi, gr_fb_height());
case ABS_MT_POSITION_X:
if (e->mt_idx) return 1;
e->mt_p.x = ev->value;
return !vk_inside_display(e->mt_p.x, &e->mt_p.xi, gr_fb_width());
case ABS_MT_POSITION_Y:
if (e->mt_idx) return 1;
e->mt_p.y = ev->value;
return !vk_inside_display(e->mt_p.y, &e->mt_p.yi, gr_fb_height());
case ABS_MT_TOUCH_MAJOR:
if (e->mt_idx) return 1;
if (e->sent)
e->mt_p.pressed = (ev->value > 0);
else
e->mt_p.pressed = (ev->value > PRESS_THRESHHOLD);
return 0;
}
return 0;
}
if (ev->type != EV_SYN)
return 0;
if (ev->code == SYN_MT_REPORT) {
/* Ignore the rest of the points */
++e->mt_idx;
return 1;
}
if (ev->code != SYN_REPORT)
return 0;
/* Report complete */
e->mt_idx = 0;
if (!e->p.pressed && !e->mt_p.pressed) {
/* No touch */
e->sent = 0;
return 0;
}
if (!(e->p.pressed && vk_tp_to_screen(&e->p, &x, &y)) &&
!(e->mt_p.pressed && vk_tp_to_screen(&e->mt_p, &x, &y))) {
/* No touch inside vk area */
return 0;
}
if (e->sent) {
/* We've already sent a fake key for this touch */
return 1;
}
/* The screen is being touched on the vk area */
e->sent = 1;
for (i = 0; i < e->vk_count; ++i) {
int xd = ABS(e->vks[i].centerx - x);
int yd = ABS(e->vks[i].centery - y);
if (xd < e->vks[i].width/2 && yd < e->vks[i].height/2) {
/* Fake a key event */
ev->type = EV_KEY;
ev->code = e->vks[i].scancode;
ev->value = 1;
vibrate(VIBRATOR_TIME_MS);
return 0;
}
}
return 1;
}
