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fix(nuttx): fix gesture event failure (#5996)

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Signed-off-by: pengyiqiang <pengyiqiang@xiaomi.com>
Co-authored-by: pengyiqiang <pengyiqiang@xiaomi.com>
Co-authored-by: Benign X <1341398182@qq.com>
This commit is contained in:
VIFEX
2024-04-04 18:08:09 +08:00
committed by GitHub
parent c9922d5701
commit a3e9b11cda
1 changed files with 56 additions and 21 deletions
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src/drivers/nuttx/lv_nuttx_touchscreen.c
+56 -21
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@@ -34,6 +34,8 @@
typedef struct {
/* fd should be defined at the beginning */
int fd;
struct touch_sample_s last_sample;
bool has_last_sample;
lv_indev_state_t last_state;
lv_indev_t * indev_drv;
} lv_nuttx_touchscreen_t;
@@ -85,38 +87,71 @@ lv_indev_t * lv_nuttx_touchscreen_create(const char * dev_path)
* STATIC FUNCTIONS
**********************/
static void conv_touch_sample(lv_indev_t * drv,
lv_indev_data_t * data,
struct touch_sample_s * sample)
{
lv_nuttx_touchscreen_t * touchscreen = drv->driver_data;
uint8_t touch_flags = sample->point[0].flags;
if(touch_flags & (TOUCH_DOWN | TOUCH_MOVE)) {
lv_display_t * disp = lv_indev_get_display(drv);
int32_t hor_max = lv_display_get_horizontal_resolution(disp) - 1;
int32_t ver_max = lv_display_get_vertical_resolution(disp) - 1;
data->point.x = LV_CLAMP(0, sample->point[0].x, hor_max);
data->point.y = LV_CLAMP(0, sample->point[0].y, ver_max);
touchscreen->last_state = LV_INDEV_STATE_PRESSED;
}
else if(touch_flags & TOUCH_UP) {
touchscreen->last_state = LV_INDEV_STATE_RELEASED;
}
}
static bool touchscreen_read_sample(int fd, struct touch_sample_s * sample)
{
int nbytes = read(fd, sample, sizeof(struct touch_sample_s));
return nbytes == sizeof(struct touch_sample_s);
}
static void touchscreen_read(lv_indev_t * drv, lv_indev_data_t * data)
{
lv_nuttx_touchscreen_t * touchscreen = drv->driver_data;
struct touch_sample_s sample;
/* Read one sample */
/*
* Note: Since it is necessary to avoid multi-processing click events
* caused by redundant continue_reading, a two-unit sample sliding window
* algorithm is used here. continue_reading is only activated when there
* are two points in the window.
*/
int nbytes = read(touchscreen->fd, &sample,
sizeof(struct touch_sample_s));
/* Handle unexpected return values */
if(nbytes == sizeof(struct touch_sample_s)) {
uint8_t touch_flags = sample.point[0].flags;
if(touch_flags & TOUCH_DOWN || touch_flags & TOUCH_MOVE) {
const lv_display_t * disp_drv = drv->disp;
int32_t ver_max = disp_drv->ver_res - 1;
int32_t hor_max = disp_drv->hor_res - 1;
data->point.x = LV_CLAMP(0, sample.point[0].x, hor_max);
data->point.y = LV_CLAMP(0, sample.point[0].y, ver_max);
touchscreen->last_state = LV_INDEV_STATE_PRESSED;
}
else if(touch_flags & TOUCH_UP) {
touchscreen->last_state = LV_INDEV_STATE_RELEASED;
/* If has last sample, use it first */
if(touchscreen->has_last_sample) {
conv_touch_sample(drv, data, &touchscreen->last_sample);
}
else {
/* Read first sample */
if(!touchscreen_read_sample(touchscreen->fd, &sample)) {
/* No sample available, return last state */
data->state = touchscreen->last_state;
return;
}
/* Read until the last point */
conv_touch_sample(drv, data, &sample);
}
/* Try to read next sample */
if(touchscreen_read_sample(touchscreen->fd, &sample)) {
/* Save last sample and let lvgl continue reading */
touchscreen->last_sample = sample;
touchscreen->has_last_sample = true;
data->continue_reading = true;
}
else {
/* No more sample available, clear last sample flag */
touchscreen->has_last_sample = false;
}
data->state = touchscreen->last_state;
}