Touch (gfx_touch)

Types

gfx_touch_event_cb_t

typedef void (*gfx_touch_event_cb_t)(gfx_touch_t *touch, const gfx_touch_event_t *event, void *user_data);

gfx_touch_event_type_t

typedef enum {
    GFX_TOUCH_EVENT_PRESS = 0,
    GFX_TOUCH_EVENT_RELEASE,
    GFX_TOUCH_EVENT_MOVE,   /**< Finger moved while pressed (slide) */
} gfx_touch_event_type_t;

gfx_touch_event_t

typedef struct {
    gfx_touch_event_type_t type;
    uint16_t x;
    uint16_t y;
    uint16_t strength;
    uint8_t track_id;
    uint32_t timestamp_ms;
} gfx_touch_event_t;

gfx_touch_config_t

typedef struct {
    esp_lcd_touch_handle_t handle;           /**< LCD touch driver handle */
    gfx_touch_event_cb_t event_cb;           /**< Event callback */
    uint32_t poll_ms;                        /**< Poll interval ms (0 = default) */
    gfx_disp_t *disp;                        /**< Display handle */
    void *user_data;                         /**< User data for callback */
} gfx_touch_config_t;

Functions

gfx_touch_set_disp()

esp_err_t gfx_touch_set_disp(gfx_touch_t *touch, gfx_disp_t *disp);

gfx_touch_del()

Remove a touch device from the list and release resources (stops polling, disables IRQ). Does not free the gfx_touch_t; caller must free(touch) after.

void gfx_touch_del(gfx_touch_t *touch);

Parameters:

touch - Touch pointer returned from gfx_touch_add; safe to pass NULL