feat(sdl): support indev LV_EVENT_DELETE (#4792)

Signed-off-by: XiaoweiYan <yanxiaowei@xiaomi.com>
Signed-off-by: YanXiaowei <yanxiaowei@xiaomi.com>
Co-authored-by: XiaoweiYan <yanxiaowei@xiaomi.com>

src/dev/sdl/lv_sdl_keyboard.c

@@ -31,6 +31,7 @@ typedef struct {
  **********************/
 static void sdl_keyboard_read(lv_indev_t * indev, lv_indev_data_t * data);
 static uint32_t keycode_to_ctrl_key(SDL_Keycode sdl_key);
+static void release_indev_cb(lv_event_t * e);
 
 /**********************
  *  STATIC VARIABLES
@@ -57,6 +58,8 @@ lv_indev_t * lv_sdl_keyboard_create(void)
     lv_indev_set_read_cb(indev, sdl_keyboard_read);
     lv_indev_set_driver_data(indev, dsc);
 
+    lv_indev_add_event(indev, release_indev_cb, LV_EVENT_DELETE, indev);
+
     return indev;
 }
 
@@ -86,6 +89,18 @@ static void sdl_keyboard_read(lv_indev_t * indev, lv_indev_data_t * data)
     }
 }
 
+static void release_indev_cb(lv_event_t * e)
+{
+    lv_indev_t * indev = (lv_indev_t *) lv_event_get_user_data(e);
+    lv_sdl_keyboard_t * dev = lv_indev_get_driver_data(indev);
+    if(dev) {
+        lv_indev_set_driver_data(indev, NULL);
+        lv_indev_set_read_cb(indev, NULL);
+        lv_free(dev);
+        LV_LOG_INFO("done");
+    }
+}
+
 void _lv_sdl_keyboard_handler(SDL_Event * event)
 {
     uint32_t win_id = UINT32_MAX;

src/dev/sdl/lv_sdl_mouse.c

@@ -25,6 +25,7 @@
  *  STATIC PROTOTYPES
  **********************/
 static void sdl_mouse_read(lv_indev_t * indev, lv_indev_data_t * data);
+static void release_indev_cb(lv_event_t * e);
 
 /**********************
  *  STATIC VARIABLES
@@ -57,6 +58,8 @@ lv_indev_t * lv_sdl_mouse_create(void)
     lv_indev_set_read_cb(indev, sdl_mouse_read);
     lv_indev_set_driver_data(indev, dsc);
 
+    lv_indev_add_event(indev, release_indev_cb, LV_EVENT_DELETE, indev);
+
     return indev;
 }
 
@@ -74,6 +77,18 @@ static void sdl_mouse_read(lv_indev_t * indev, lv_indev_data_t * data)
     data->state = dsc->left_button_down ? LV_INDEV_STATE_PRESSED : LV_INDEV_STATE_RELEASED;
 }
 
+static void release_indev_cb(lv_event_t * e)
+{
+    lv_indev_t * indev = (lv_indev_t *) lv_event_get_user_data(e);
+    lv_sdl_mouse_t * dsc = lv_indev_get_driver_data(indev);
+    if(dsc) {
+        lv_indev_set_driver_data(indev, NULL);
+        lv_indev_set_read_cb(indev, NULL);
+        lv_free(dsc);
+        LV_LOG_INFO("done");
+    }
+}
+
 void _lv_sdl_mouse_handler(SDL_Event * event)
 {
     uint32_t win_id = UINT32_MAX;

src/dev/sdl/lv_sdl_mousewheel.c

@@ -22,6 +22,7 @@
  *  STATIC PROTOTYPES
  **********************/
 static void sdl_mousewheel_read(lv_indev_t * indev, lv_indev_data_t * data);
+static void release_indev_cb(lv_event_t * e);
 
 /**********************
  *  STATIC VARIABLES
@@ -52,6 +53,8 @@ lv_indev_t * lv_sdl_mousewheel_create(void)
     lv_indev_set_read_cb(indev, sdl_mousewheel_read);
     lv_indev_set_driver_data(indev, dsc);
 
+    lv_indev_add_event(indev, release_indev_cb, LV_EVENT_DELETE, indev);
+
     return indev;
 }
 
@@ -68,6 +71,18 @@ static void sdl_mousewheel_read(lv_indev_t * indev, lv_indev_data_t * data)
     dsc->diff = 0;
 }
 
+static void release_indev_cb(lv_event_t * e)
+{
+    lv_indev_t * indev = (lv_indev_t *) lv_event_get_user_data(e);
+    lv_sdl_mousewheel_t * dsc = lv_indev_get_driver_data(indev);
+    if(dsc) {
+        lv_indev_set_driver_data(indev, NULL);
+        lv_indev_set_read_cb(indev, NULL);
+        lv_free(dsc);
+        LV_LOG_INFO("done");
+    }
+}
+
 void _lv_sdl_mousewheel_handler(SDL_Event * event)
 {
     uint32_t win_id = UINT32_MAX;

src/indev/lv_indev.c

@@ -272,7 +272,7 @@ void lv_indev_set_type(lv_indev_t * indev, lv_indev_type_t indev_type)
     indev->reset_query = 1;
 }
 
-void lv_indev_set_read_cb(lv_indev_t * indev,  lv_indev_read_cb_t read_cb)
+void lv_indev_set_read_cb(lv_indev_t * indev, lv_indev_read_cb_t read_cb)
 {
     if(indev == NULL) return;