feat(roller): add properties

Signed-off-by: Neo Xu <neo.xu1990@gmail.com>

src/core/lv_obj_property.h

@@ -66,6 +66,7 @@ enum {
     LV_PROPERTY_LABEL_START     = 0x0300, /* lv_label.c */
     LV_PROPERTY_KEYBOARD_START  = 0x0400, /* lv_keyboard.c */
     LV_PROPERTY_TEXTAREA_START  = 0x0500, /* lv_textarea.c */
+    LV_PROPERTY_ROLLER_START    = 0x0600, /* lv_roller.c */
 
     /*Special ID, use it to extend ID and make sure it's unique and compile time determinant*/
     LV_PROPERTY_ID_BUILTIN_LAST = 0xffff, /*ID of 0x10000 ~ 0xfffffff is reserved for user*/

src/widgets/property/lv_obj_property_names.h

@@ -14,6 +14,7 @@
     extern const lv_property_name_t lv_keyboard_property_names[4];
     extern const lv_property_name_t lv_label_property_names[4];
     extern const lv_property_name_t lv_obj_property_names[73];
+    extern const lv_property_name_t lv_roller_property_names[3];
     extern const lv_property_name_t lv_style_property_names[112];
     extern const lv_property_name_t lv_textarea_property_names[15];
 #endif

src/widgets/property/lv_roller_properties.c

@@ -0,0 +1,25 @@
+
+/**
+ * GENERATED FILE, DO NOT EDIT IT!
+ * @file lv_roller_properties.c
+ */
+
+#include "../roller/lv_roller.h"
+
+#if LV_USE_OBJ_PROPERTY && LV_USE_OBJ_PROPERTY_NAME
+
+#if LV_USE_ROLLER
+/**
+ * Roller widget property names, name must be in order.
+ * Generated code from properties.py
+ */
+/* *INDENT-OFF* */
+const lv_property_name_t lv_roller_property_names[3] = {
+    {"options",                LV_PROPERTY_ROLLER_OPTIONS,},
+    {"selected",               LV_PROPERTY_ROLLER_SELECTED,},
+    {"visible_row_count",      LV_PROPERTY_ROLLER_VISIBLE_ROW_COUNT,},
+};
+#endif /*LV_USE_ROLLER*/
+
+/* *INDENT-ON* */
+#endif

src/widgets/roller/lv_roller.c

@@ -55,6 +55,26 @@ static void transform_vect_recursive(lv_obj_t * roller, lv_point_t * vect);
 /**********************
  *  STATIC VARIABLES
  **********************/
+#if LV_USE_OBJ_PROPERTY
+static const lv_property_ops_t properties[] = {
+    {
+        .id = LV_PROPERTY_ROLLER_OPTIONS,
+        .setter = NULL,
+        .getter = lv_roller_get_options,
+    },
+    {
+        .id = LV_PROPERTY_ROLLER_SELECTED,
+        .setter = NULL,
+        .getter = lv_roller_get_selected,
+    },
+    {
+        .id = LV_PROPERTY_ROLLER_VISIBLE_ROW_COUNT,
+        .setter = lv_roller_set_visible_row_count,
+        .getter = NULL,
+    },
+};
+#endif
+
 const lv_obj_class_t lv_roller_class = {
     .constructor_cb = lv_roller_constructor,
     .event_cb = lv_roller_event,
@@ -65,6 +85,17 @@ const lv_obj_class_t lv_roller_class = {
     .group_def = LV_OBJ_CLASS_GROUP_DEF_TRUE,
     .base_class = &lv_obj_class,
     .name = "roller",
+#if LV_USE_OBJ_PROPERTY
+    .prop_index_start = LV_PROPERTY_ROLLER_START,
+    .prop_index_end = LV_PROPERTY_ROLLER_END,
+    .properties = properties,
+    .properties_count = sizeof(properties) / sizeof(properties[0]),
+
+#if LV_USE_OBJ_PROPERTY_NAME
+    .property_names = lv_roller_property_names,
+    .names_count = sizeof(lv_roller_property_names) / sizeof(lv_property_name_t),
+#endif
+#endif
 };
 
 const lv_obj_class_t lv_roller_label_class  = {
@@ -147,7 +178,6 @@ void lv_roller_set_options(lv_obj_t * obj, const char * options, lv_roller_mode_
 
     /*If the selected text has larger font the label needs some extra draw padding to draw it.*/
     lv_obj_refresh_ext_draw_size(label);
-
 }
 
 void lv_roller_set_selected(lv_obj_t * obj, uint32_t sel_opt, lv_anim_enable_t anim)

src/widgets/roller/lv_roller.h

@@ -38,6 +38,15 @@ typedef enum {
     LV_ROLLER_MODE_INFINITE, /**< Infinite mode (roller can be scrolled forever).*/
 } lv_roller_mode_t;
 
+#if LV_USE_OBJ_PROPERTY
+enum {
+    LV_PROPERTY_ID(ROLLER, OPTIONS,             LV_PROPERTY_TYPE_TEXT,   0),
+    LV_PROPERTY_ID(ROLLER, SELECTED,            LV_PROPERTY_TYPE_INT,    1),
+    LV_PROPERTY_ID(ROLLER, VISIBLE_ROW_COUNT,   LV_PROPERTY_TYPE_INT,    2),
+    LV_PROPERTY_ROLLER_END,
+};
+#endif
+
 LV_ATTRIBUTE_EXTERN_DATA extern const lv_obj_class_t lv_roller_class;
 
 /**********************

tests/src/test_cases/widgets/test_roller.c

@@ -330,4 +330,24 @@ void test_roller_appearance(void)
     TEST_ASSERT_EQUAL_SCREENSHOT("widgets/roller_3.png");
 }
 
+void test_roller_properties(void)
+{
+#if LV_USE_OBJ_PROPERTY
+    lv_obj_t * obj = lv_roller_create(lv_screen_active());
+    lv_property_t prop = { };
+
+    prop.id = LV_PROPERTY_ROLLER_OPTIONS;
+    prop.ptr = "One\nTwo\nThree";
+    lv_roller_set_options(obj, prop.ptr, LV_ROLLER_MODE_NORMAL);
+    TEST_ASSERT_EQUAL_STRING("One\nTwo\nThree", lv_roller_get_options(obj));
+    TEST_ASSERT_EQUAL_STRING("One\nTwo\nThree", lv_obj_get_property(obj, LV_PROPERTY_ROLLER_OPTIONS).ptr);
+
+    prop.id = LV_PROPERTY_ROLLER_SELECTED;
+    prop.num = 1;
+    lv_roller_set_selected(obj, 1, LV_ANIM_OFF);
+    TEST_ASSERT_EQUAL_INT(1, lv_roller_get_selected(obj));
+    TEST_ASSERT_EQUAL_INT(1, lv_obj_get_property(obj, LV_PROPERTY_ROLLER_SELECTED).num);
+#endif
+}
+
 #endif