LV_INDEV_TYPE_BUTTON added

lv_core/lv_indev.h

@@ -60,40 +60,49 @@ void lv_indev_reset_lpr(lv_indev_t * indev);
 void lv_indev_enable(lv_hal_indev_type_t type, bool enable);
 
 /**
- * Set a cursor for a pointer input device
- * @param indev pointer to an input device (type: 'LV_INDEV_TYPE_POINTER')
+ * Set a cursor for a pointer input device (for LV_INPUT_TYPE_POINTER and LV_INPUT_TYPE_BUTTON)
+ * @param indev pointer to an input device
  * @param cur_obj pointer to an object to be used as cursor
  */
 void lv_indev_set_cursor(lv_indev_t *indev, lv_obj_t *cur_obj);
 
 #if USE_LV_GROUP
 /**
- * Set a destination group for a keypad input device
- * @param indev pointer to an input device (type: 'LV_INDEV_TYPE_KEYPAD')
+ * Set a destination group for a keypad input device (for LV_INDEV_TYPE_KEYPAD)
+ * @param indev pointer to an input device
  * @param group point to a group
  */
 void lv_indev_set_group(lv_indev_t *indev, lv_group_t *group);
 #endif
+
+/**
+ * Set the an array of points for LV_INDEV_TYPE_BUTTON.
+ * These points will be assigned to the buttons to press a specific point on the screen
+ * @param indev pointer to an input device
+ * @param group point to a group
+ */
+void lv_indev_set_button_points(lv_indev_t *indev, lv_point_t *points);
+
 /**
- * Get the last point of an input device
+ * Get the last point of an input device (for LV_INDEV_TYPE_POINTER and LV_INDEV_TYPE_BUTTON)
  * @param indev pointer to an input device
  * @param point pointer to a point to store the result
  */
 void lv_indev_get_point(lv_indev_t * indev, lv_point_t * point);
+
 /**
- * Check if there is dragging with an input device or not
+ * Check if there is dragging with an input device or not (for LV_INDEV_TYPE_POINTER and LV_INDEV_TYPE_BUTTON)
  * @param indev pointer to an input device
  * @return true: drag is in progress
  */
 bool lv_indev_is_dragging(lv_indev_t * indev);
 
 /**
- * Get the vector of dragging of an input device
+ * Get the vector of dragging of an input device (for LV_INDEV_TYPE_POINTER and LV_INDEV_TYPE_BUTTON)
  * @param indev pointer to an input device
  * @param point pointer to a point to store the vector
  */
 void lv_indev_get_vect(lv_indev_t * indev, lv_point_t * point);
-
 /**
  * Get elapsed time since last press
  * @param indev pointer to an input device (NULL to get the overall smallest inactivity)

lv_hal/lv_hal_indev.h

@@ -33,19 +33,21 @@ typedef enum {
     LV_INDEV_TYPE_NONE,        /*Show uninitialized state*/
     LV_INDEV_TYPE_POINTER,     /*Touch pad, mouse, external button*/
     LV_INDEV_TYPE_KEYPAD,      /*Keypad or keyboard*/
+    LV_INDEV_TYPE_BUTTON,      /*External (hardware button) which is assinged to a specific point of the screen*/
 } lv_hal_indev_type_t;
 
 /*States for input devices*/
 typedef enum {
-    LV_INDEV_STATE_REL,
+    LV_INDEV_STATE_REL = 0,
     LV_INDEV_STATE_PR
 }lv_indev_state_t;
 
 /*Data type when an input device is read */
 typedef struct {
     union {
-        lv_point_t point;      /*For INDEV_TYPE_POINTER*/
-        uint32_t key;          /*For INDEV_TYPE_KEYPAD*/
+        lv_point_t point;      /*For LV_INDEV_TYPE_POINTER the currently pressed point*/
+        uint32_t key;          /*For LV_INDEV_TYPE_KEYPAD the currently pressed key*/
+        uint32_t btn;          /*For LV_INDEV_TYPE_BUTTON the currently pressed button*/
     };
     lv_indev_state_t state;    /*LV_INDEV_EVENT_REL or LV_INDEV_EVENT_PR*/
     void *user_data;           /*'lv_indev_drv_t.priv' for this driver*/
@@ -60,10 +62,11 @@ typedef struct {
 
 struct _lv_obj_t;
 
-typedef struct _lv_indev_state_t {
+/*Run time data of input devices*/
+typedef struct _lv_indev_proc_t {
     lv_indev_state_t state;
     union {
-        struct {    /*Pointer data*/
+        struct {    /*Pointer and button data*/
             lv_point_t act_point;
             lv_point_t last_point;
             lv_point_t vect;
@@ -94,13 +97,16 @@ typedef struct _lv_indev_state_t {
 struct _lv_obj_t;
 struct _lv_group_t;
 
+/*The main input device descriptor with driver, runtime data ('proc') and some additional information*/
 typedef struct _lv_indev_t {
     lv_indev_drv_t driver;
     lv_indev_proc_t proc;
     uint32_t last_activity_time;
     union {
-        struct _lv_obj_t *cursor;
+        struct _lv_obj_t *cursor;       /*Cursor for LV_INPUT_TYPE_POINTER*/
         struct _lv_group_t *group;      /*Keypad destination group*/
+        lv_point_t * btn_points;      /*Array points assigned to the button ()screen will be pressed here by the buttons*/
+
     };
     struct _lv_indev_t *next;
 } lv_indev_t;