lv_obj_del: reset the dispi-s only if it is really required

lv_obj/lv_obj.c

@@ -15,6 +15,7 @@
 #include "lvgl/lv_app/lv_app.h"
 #include "lvgl/lv_draw/lv_draw_rbasic.h"
 #include "misc/gfx/anim.h"
+#include "hal/indev/indev.h"
 #include <stdint.h>
 #include <string.h>
 
@@ -280,10 +281,24 @@ void lv_obj_del(lv_obj_t * obj)
     if(obj->ext != NULL)  dm_free(obj->ext);
     dm_free(obj); /*Free the object itself*/
     
-    /* Reset all display input (dispi) because 
-     * the deleted object can be being pressed*/
-    lv_dispi_reset();
-    
+    /* Reset all display input (dispi) if
+     * the currently pressed object is deleted too*/
+    lv_dispi_t * dispi_array = lv_dispi_get_array();
+    lv_obj_t * dpar;
+    uint8_t d;
+    for(d = 0; d < INDEV_NUM; d++) {
+        dpar = obj;
+        while(dpar != NULL) {
+            if(dispi_array[d].act_obj == dpar ||
+               dispi_array[d].last_obj == dpar) {
+                lv_dispi_reset();
+                break;
+            } else {
+                dpar = lv_obj_get_parent(dpar);
+            }
+        }
+    }
+
     /*Send a signal to the parent to notify it about the child delete*/
     if(par != NULL) {
     	par->signal_f(par, LV_SIGNAL_CHILD_CHG, NULL);