feat(indev): detect double and triple click (closes #6020) (#6187)

examples/event/index.rst

@@ -2,23 +2,29 @@
 Button click event
 ------------------
 
-.. lv_example:: event/lv_example_event_1
+.. lv_example:: event/lv_example_event_click
+  :language: c
+
+Click streaks
+-------------
+
+.. lv_example:: event/lv_example_event_streak
   :language: c
 
 Handle multiple events
 ----------------------
-.. lv_example:: event/lv_example_event_2
+.. lv_example:: event/lv_example_event_button
   :language: c
 
 
 Event bubbling
 --------------
-.. lv_example:: event/lv_example_event_3
+.. lv_example:: event/lv_example_event_bubble
   :language: c
 
 Draw event
 ----------
-.. lv_example:: event/lv_example_event_4
+.. lv_example:: event/lv_example_event_draw
   :language: c
 
 

examples/event/lv_example_event.h

@@ -25,10 +25,11 @@ extern "C" {
 /**********************
  * GLOBAL PROTOTYPES
  **********************/
-void lv_example_event_1(void);
-void lv_example_event_2(void);
-void lv_example_event_3(void);
-void lv_example_event_4(void);
+void lv_example_event_click(void);
+void lv_example_event_streak(void);
+void lv_example_event_button(void);
+void lv_example_event_bubble(void);
+void lv_example_event_draw(void);
 
 /**********************
  *      MACROS

examples/event/lv_example_event_bubble.c

@@ -19,7 +19,7 @@ static void event_cb(lv_event_t * e)
 /**
  * Demonstrate event bubbling
  */
-void lv_example_event_3(void)
+void lv_example_event_bubble(void)
 {
 
     lv_obj_t * cont = lv_obj_create(lv_screen_active());

examples/event/lv_example_event_button.c

@@ -27,7 +27,7 @@ static void event_cb(lv_event_t * e)
 /**
  * Handle multiple events
  */
-void lv_example_event_2(void)
+void lv_example_event_button(void)
 {
     lv_obj_t * btn = lv_button_create(lv_screen_active());
     lv_obj_set_size(btn, 100, 50);

examples/event/lv_example_event_click.c

@@ -15,7 +15,7 @@ static void event_cb(lv_event_t * e)
 /**
  * Add click event to a button
  */
-void lv_example_event_1(void)
+void lv_example_event_click(void)
 {
     lv_obj_t * btn = lv_button_create(lv_screen_active());
     lv_obj_set_size(btn, 100, 50);

examples/event/lv_example_event_draw.c

@@ -47,7 +47,7 @@ static void event_cb(lv_event_t * e)
 /**
  * Demonstrate the usage of draw event
  */
-void lv_example_event_4(void)
+void lv_example_event_draw(void)
 {
     lv_obj_t * cont = lv_obj_create(lv_screen_active());
     lv_obj_set_size(cont, 200, 200);

examples/event/lv_example_event_streak.c

@@ -0,0 +1,40 @@
+#include "../lv_examples.h"
+#if LV_BUILD_EXAMPLES && LV_USE_LABEL
+
+static void short_click_event_cb(lv_event_t * e)
+{
+    LV_LOG_USER("Short clicked");
+
+    lv_obj_t * info_label = lv_event_get_user_data(e);
+    lv_indev_t * indev = lv_event_get_param(e);
+    uint8_t cnt = lv_indev_get_short_click_streak(indev);
+    lv_label_set_text_fmt(info_label, "Short click streak: %"LV_PRIu32, cnt);
+}
+
+static void streak_event_cb(lv_event_t * e)
+{
+    lv_obj_t * btn = lv_event_get_target(e);
+    lv_obj_t * label = lv_obj_get_child(btn, 0);
+    const char * text = lv_event_get_user_data(e);
+    lv_label_set_text(label, text);
+}
+
+void lv_example_event_streak(void)
+{
+    lv_obj_t * info_label = lv_label_create(lv_screen_active());
+    lv_label_set_text(info_label, "No events yet");
+
+    lv_obj_t * btn = lv_button_create(lv_screen_active());
+    lv_obj_set_size(btn, 100, 50);
+    lv_obj_center(btn);
+    lv_obj_add_event_cb(btn, short_click_event_cb, LV_EVENT_SHORT_CLICKED, info_label);
+    lv_obj_add_event_cb(btn, streak_event_cb, LV_EVENT_SINGLE_CLICKED, "Single clicked");
+    lv_obj_add_event_cb(btn, streak_event_cb, LV_EVENT_DOUBLE_CLICKED, "Double clicked");
+    lv_obj_add_event_cb(btn, streak_event_cb, LV_EVENT_TRIPLE_CLICKED, "Triple clicked");
+
+    lv_obj_t * label = lv_label_create(btn);
+    lv_label_set_text(label, "Click me!");
+    lv_obj_center(label);
+}
+
+#endif