diff --git a/src/lv_themes/lv_theme_material.c b/src/lv_themes/lv_theme_material.c
index 37786645e..fd6b3dbc2 100644
--- a/src/lv_themes/lv_theme_material.c
+++ b/src/lv_themes/lv_theme_material.c
@@ -72,11 +72,13 @@
  *  STATIC PROTOTYPES
  **********************/
 static void lv_theme_material_apply(lv_obj_t * obj, lv_theme_style_t name);
+static void style_init_reset(lv_style_t * style);
 
 /**********************
  *  STATIC VARIABLES
  **********************/
 static lv_theme_t theme;
+static bool inited;
 
 static lv_style_t scr;
 static lv_style_t bg;
@@ -180,17 +182,16 @@ static lv_style_t pad_small;
  *   STATIC FUNCTIONS
  **********************/
 
-
 static void basic_init(void)
 {
-    lv_style_init(&scr);
+    style_init_reset(&scr);
     lv_style_set_bg_opa(&scr, LV_STATE_DEFAULT, LV_OPA_COVER);
     lv_style_set_bg_color(&scr, LV_STATE_DEFAULT, COLOR_SCR);
     lv_style_set_text_color(&scr, LV_STATE_DEFAULT, COLOR_SCR_TEXT);
     lv_style_set_value_color(&scr, LV_STATE_DEFAULT, COLOR_SCR_TEXT);
     lv_style_set_border_post(&scr, LV_STATE_DEFAULT, true);
 
-    lv_style_init(&bg);
+    style_init_reset(&bg);
     lv_style_set_radius(&bg, LV_STATE_DEFAULT, LV_DPI / 25);
     lv_style_set_bg_opa(&bg, LV_STATE_DEFAULT, LV_OPA_COVER);
     lv_style_set_bg_color(&bg, LV_STATE_DEFAULT, COLOR_BG);
@@ -212,7 +213,7 @@ static void basic_init(void)
     lv_style_set_transition_time(&bg, LV_STATE_DEFAULT, TRANSITION_TIME);
     lv_style_set_transition_prop_6(&bg, LV_STATE_DEFAULT, LV_STYLE_BORDER_COLOR);
 
-    lv_style_init(&bg_sec);
+    style_init_reset(&bg_sec);
     lv_style_copy(&bg_sec, &bg);
     lv_style_set_bg_color(&bg_sec, LV_STATE_DEFAULT, COLOR_BG_SEC);
     lv_style_set_border_color(&bg_sec, LV_STATE_DEFAULT, COLOR_BG_SEC_BORDER);
@@ -221,7 +222,7 @@ static void basic_init(void)
     lv_style_set_image_recolor(&bg_sec, LV_STATE_DEFAULT, COLOR_BG_SEC_TEXT);
     lv_style_set_line_color(&bg_sec, LV_STATE_DEFAULT, COLOR_BG_SEC_TEXT);
 
-    lv_style_init(&bg_click);
+    style_init_reset(&bg_click);
     lv_style_set_bg_color(&bg_click, LV_STATE_PRESSED, COLOR_BG_PR);
     lv_style_set_bg_color(&bg_click, LV_STATE_CHECKED, COLOR_BG_CHK);
     lv_style_set_bg_color(&bg_click, LV_STATE_PRESSED | LV_STATE_CHECKED, COLOR_BG_PR_CHK);
@@ -242,7 +243,7 @@ static void basic_init(void)
     lv_style_set_image_recolor(&bg_click, LV_STATE_DISABLED, COLOR_BG_TEXT_DIS);
     lv_style_set_transition_prop_5(&bg_click, LV_STATE_DEFAULT, LV_STYLE_BG_COLOR);
 
-    lv_style_init(&btn);
+    style_init_reset(&btn);
     lv_style_set_radius(&btn, LV_STATE_DEFAULT, LV_RADIUS_CIRCLE);
     lv_style_set_bg_opa(&btn, LV_STATE_DEFAULT, LV_OPA_COVER);
     lv_style_set_bg_color(&btn, LV_STATE_DEFAULT, COLOR_BTN);
@@ -291,10 +292,10 @@ static void basic_init(void)
     lv_style_set_transition_delay(&btn, LV_STATE_DEFAULT, TRANSITION_TIME);
     lv_style_set_transition_delay(&btn, LV_STATE_PRESSED, 0);
 
-    lv_style_init(&pad_inner);
+    style_init_reset(&pad_inner);
     lv_style_set_pad_inner(&pad_inner, LV_STATE_DEFAULT, LV_DPI / 10);
 
-    lv_style_init(&pad_small);
+    style_init_reset(&pad_small);
     lv_style_set_pad_left(&pad_small, LV_STATE_DEFAULT,  LV_DPI / 15);
     lv_style_set_pad_right(&pad_small, LV_STATE_DEFAULT, LV_DPI / 15);
     lv_style_set_pad_top(&pad_small, LV_STATE_DEFAULT,  LV_DPI / 15);
@@ -326,7 +327,7 @@ static void label_init(void)
 static void bar_init(void)
 {
 #if LV_USE_BAR
-    lv_style_init(&bar_bg);
+    style_init_reset(&bar_bg);
     lv_style_set_radius(&bar_bg, LV_STATE_DEFAULT, LV_RADIUS_CIRCLE);
     lv_style_set_bg_opa(&bar_bg, LV_STATE_DEFAULT, LV_OPA_COVER);
     lv_style_set_bg_color(&bar_bg, LV_STATE_DEFAULT, COLOR_BG_SEC);
@@ -338,7 +339,7 @@ static void bar_init(void)
     lv_style_set_transition_time(&bar_bg, LV_STATE_DEFAULT, TRANSITION_TIME);
     lv_style_set_transition_prop_6(&bar_bg, LV_STATE_DEFAULT, LV_STYLE_OUTLINE_OPA);
 
-    lv_style_init(&bar_indic);
+    style_init_reset(&bar_indic);
     lv_style_set_bg_opa(&bar_indic, LV_STATE_DEFAULT, LV_OPA_COVER);
     lv_style_set_radius(&bar_indic, LV_STATE_DEFAULT, LV_RADIUS_CIRCLE);
     lv_style_set_bg_color(&bar_indic, LV_STATE_DEFAULT, theme.color_primary);
@@ -364,7 +365,7 @@ static void line_init(void)
 static void led_init(void)
 {
 #if LV_USE_LED != 0
-    lv_style_init(&led);
+    style_init_reset(&led);
     lv_style_set_bg_opa(&led, LV_STATE_DEFAULT, LV_OPA_COVER);
     lv_style_set_bg_color(&led, LV_STATE_DEFAULT, theme.color_primary);
     lv_style_set_border_width(&led, LV_STATE_DEFAULT, 2);
@@ -380,7 +381,7 @@ static void led_init(void)
 static void slider_init(void)
 {
 #if LV_USE_SLIDER != 0
-    lv_style_init(&slider_knob);
+    style_init_reset(&slider_knob);
     lv_style_set_bg_opa(&slider_knob, LV_STATE_DEFAULT, LV_OPA_COVER);
     lv_style_set_bg_color(&slider_knob, LV_STATE_DEFAULT, IS_LIGHT ? theme.color_primary : LV_COLOR_WHITE);
     lv_style_set_value_color(&slider_knob, LV_STATE_DEFAULT, IS_LIGHT ? lv_color_hex(0x31404f) : LV_COLOR_WHITE);
@@ -390,7 +391,7 @@ static void slider_init(void)
     lv_style_set_pad_top(&slider_knob, LV_STATE_DEFAULT, LV_DPI / 20);
     lv_style_set_pad_bottom(&slider_knob, LV_STATE_DEFAULT, LV_DPI / 20);
 
-    lv_style_init(&slider_bg);
+    style_init_reset(&slider_bg);
     lv_style_set_margin_left(&slider_bg, LV_STATE_DEFAULT, LV_DPI / 12);
     lv_style_set_margin_right(&slider_bg, LV_STATE_DEFAULT, LV_DPI / 12);
     lv_style_set_margin_top(&slider_bg, LV_STATE_DEFAULT, LV_DPI / 20);
@@ -402,7 +403,7 @@ static void slider_init(void)
 static void switch_init(void)
 {
 #if LV_USE_SWITCH != 0
-    lv_style_init(&sw_knob);
+    style_init_reset(&sw_knob);
     lv_style_set_bg_opa(&sw_knob, LV_STATE_DEFAULT, LV_OPA_COVER);
     lv_style_set_bg_color(&sw_knob, LV_STATE_DEFAULT, LV_COLOR_WHITE);
     lv_style_set_radius(&sw_knob, LV_STATE_DEFAULT, LV_RADIUS_CIRCLE);
@@ -416,7 +417,7 @@ static void switch_init(void)
 static void linemeter_init(void)
 {
 #if LV_USE_LINEMETER != 0
-    lv_style_init(&lmeter);
+    style_init_reset(&lmeter);
     lv_style_set_radius(&lmeter, LV_STATE_DEFAULT, LV_RADIUS_CIRCLE);
     lv_style_set_pad_left(&lmeter, LV_STATE_DEFAULT, LV_DPI / 10);
     lv_style_set_pad_right(&lmeter, LV_STATE_DEFAULT, LV_DPI / 10);
@@ -435,7 +436,7 @@ static void linemeter_init(void)
 static void gauge_init(void)
 {
 #if LV_USE_GAUGE != 0
-    lv_style_init(&gauge_main);
+    style_init_reset(&gauge_main);
     lv_style_set_line_color(&gauge_main, LV_STATE_DEFAULT, lv_color_hex3(0x888));
     lv_style_set_scale_grad_color(&gauge_main, LV_STATE_DEFAULT, lv_color_hex3(0x888));
     lv_style_set_scale_end_color(&gauge_main, LV_STATE_DEFAULT, theme.color_primary);
@@ -450,7 +451,7 @@ static void gauge_init(void)
     lv_style_set_radius(&gauge_main, LV_STATE_DEFAULT, LV_RADIUS_CIRCLE);
     lv_style_set_border_width(&gauge_main, LV_STATE_DEFAULT, LV_DPI / 50);
 
-    lv_style_init(&gauge_strong);
+    style_init_reset(&gauge_strong);
     lv_style_set_line_color(&gauge_strong, LV_STATE_DEFAULT, lv_color_hex3(0x888));
     lv_style_set_scale_grad_color(&gauge_strong, LV_STATE_DEFAULT, lv_color_hex3(0x888));
     lv_style_set_scale_end_color(&gauge_strong, LV_STATE_DEFAULT, theme.color_primary);
@@ -458,7 +459,7 @@ static void gauge_init(void)
     lv_style_set_scale_end_line_width(&gauge_strong, LV_STATE_DEFAULT, LV_DPI / 25);
     lv_style_set_scale_width(&gauge_strong, LV_STATE_DEFAULT, LV_DPI / 6);
 
-    lv_style_init(&gauge_needle);
+    style_init_reset(&gauge_needle);
     lv_style_set_line_color(&gauge_needle, LV_STATE_DEFAULT, IS_LIGHT ? lv_color_hex(0x464b5b) : LV_COLOR_WHITE);
     lv_style_set_line_width(&gauge_needle, LV_STATE_DEFAULT, LV_DPI / 25);
     lv_style_set_bg_opa(&gauge_needle, LV_STATE_DEFAULT, LV_OPA_COVER);
@@ -472,12 +473,12 @@ static void gauge_init(void)
 static void arc_init(void)
 {
 #if LV_USE_ARC != 0
-    lv_style_init(&arc_indic);
+    style_init_reset(&arc_indic);
     lv_style_set_line_color(&arc_indic, LV_STATE_DEFAULT, theme.color_primary);
     lv_style_set_line_width(&arc_indic, LV_STATE_DEFAULT, LV_DPI / 8);
     lv_style_set_line_rounded(&arc_indic, LV_STATE_DEFAULT, true);
 
-    lv_style_init(&arc_bg);
+    style_init_reset(&arc_bg);
     lv_style_set_line_color(&arc_bg, LV_STATE_DEFAULT, COLOR_BG_SEC);
     lv_style_set_line_width(&arc_bg, LV_STATE_DEFAULT, LV_DPI / 8);
     lv_style_set_line_rounded(&arc_bg, LV_STATE_DEFAULT, true);
@@ -494,16 +495,16 @@ static void spinner_init(void)
 static void chart_init(void)
 {
 #if LV_USE_CHART
-    lv_style_init(&chart_bg);
+    style_init_reset(&chart_bg);
     lv_style_set_text_color(&chart_bg, LV_STATE_DEFAULT, COLOR_BG_TEXT_DIS);
 
-    lv_style_init(&chart_series_bg);
+    style_init_reset(&chart_series_bg);
     lv_style_set_line_width(&chart_series_bg, LV_STATE_DEFAULT, 1);
     lv_style_set_line_dash_width(&chart_series_bg, LV_STATE_DEFAULT, 4);
     lv_style_set_line_dash_gap(&chart_series_bg, LV_STATE_DEFAULT, 4);
     lv_style_set_line_color(&chart_series_bg, LV_STATE_DEFAULT, COLOR_BG_BORDER);
 
-    lv_style_init(&chart_series);
+    style_init_reset(&chart_series);
     lv_style_set_line_width(&chart_series, LV_STATE_DEFAULT, LV_DPI / 50);
     lv_style_set_size(&chart_series, LV_STATE_DEFAULT, LV_DPI / 40);
     lv_style_set_pad_inner(&chart_series, LV_STATE_DEFAULT, LV_MATH_MAX(LV_DPI / 100, 1));     /*Space between columns*/
@@ -516,20 +517,20 @@ static void calendar_init(void)
 {
 #if LV_USE_CALENDAR
 
-    lv_style_init(&calendar_header);
+    style_init_reset(&calendar_header);
     lv_style_set_pad_top(&calendar_header, LV_STATE_DEFAULT, LV_DPI / 10);
     lv_style_set_pad_left(&calendar_header, LV_STATE_DEFAULT, LV_DPI / 10);
     lv_style_set_pad_right(&calendar_header, LV_STATE_DEFAULT, LV_DPI / 10);
     lv_style_set_pad_bottom(&calendar_header, LV_STATE_DEFAULT, LV_DPI / 10);
     lv_style_set_text_color(&calendar_header, LV_STATE_PRESSED, IS_LIGHT ? lv_color_hex(0x888888) : LV_COLOR_WHITE);
 
-    lv_style_init(&calendar_daynames);
+    style_init_reset(&calendar_daynames);
     lv_style_set_text_color(&calendar_daynames, LV_STATE_DEFAULT, IS_LIGHT ? lv_color_hex(0x31404f) : lv_color_hex3(0xeee));
     lv_style_set_pad_left(&calendar_daynames, LV_STATE_DEFAULT, LV_DPI / 10);
     lv_style_set_pad_right(&calendar_daynames, LV_STATE_DEFAULT, LV_DPI / 10);
     lv_style_set_pad_bottom(&calendar_daynames, LV_STATE_DEFAULT, LV_DPI / 10);
 
-    lv_style_init(&calendar_date_nums);
+    style_init_reset(&calendar_date_nums);
     lv_style_set_radius(&calendar_date_nums, LV_STATE_DEFAULT, LV_DPI / 50);
     lv_style_set_text_color(&calendar_date_nums, LV_STATE_CHECKED, IS_LIGHT ? lv_color_hex(0x31404f) : LV_COLOR_WHITE);
     lv_style_set_text_color(&calendar_date_nums, LV_STATE_FOCUSED, theme.color_primary);
@@ -552,14 +553,14 @@ static void calendar_init(void)
 static void cpicker_init(void)
 {
 #if LV_USE_CPICKER
-    lv_style_init(&cpicker_bg);
+    style_init_reset(&cpicker_bg);
     lv_style_set_scale_width(&cpicker_bg, LV_STATE_DEFAULT, LV_DPI / 4);
     lv_style_set_bg_opa(&cpicker_bg, LV_STATE_DEFAULT, LV_OPA_COVER);
     lv_style_set_bg_color(&cpicker_bg, LV_STATE_DEFAULT, COLOR_SCR);
     lv_style_set_pad_inner(&cpicker_bg, LV_STATE_DEFAULT, LV_DPI / 10);
     lv_style_set_radius(&cpicker_bg, LV_STATE_DEFAULT, LV_RADIUS_CIRCLE);
 
-    lv_style_init(&cpicker_indic);
+    style_init_reset(&cpicker_indic);
     lv_style_set_radius(&cpicker_indic, LV_STATE_DEFAULT, LV_RADIUS_CIRCLE);
     lv_style_set_bg_color(&cpicker_indic, LV_STATE_DEFAULT, LV_COLOR_WHITE);
     lv_style_set_bg_opa(&cpicker_indic, LV_STATE_DEFAULT, LV_OPA_COVER);
@@ -576,7 +577,7 @@ static void cpicker_init(void)
 static void checkbox_init(void)
 {
 #if LV_USE_CHECKBOX != 0
-    lv_style_init(&cb_bg);
+    style_init_reset(&cb_bg);
     lv_style_set_radius(&cb_bg, LV_STATE_DEFAULT, LV_DPI / 50);
     lv_style_set_pad_inner(&cb_bg, LV_STATE_DEFAULT, LV_DPI / 20);
     lv_style_set_outline_color(&cb_bg, LV_STATE_DEFAULT, theme.color_primary);
@@ -587,7 +588,7 @@ static void checkbox_init(void)
     lv_style_set_transition_time(&cb_bg, LV_STATE_DEFAULT, TRANSITION_TIME);
     lv_style_set_transition_prop_6(&cb_bg, LV_STATE_DEFAULT, LV_STYLE_OUTLINE_OPA);
 
-    lv_style_init(&cb_bullet);
+    style_init_reset(&cb_bullet);
     lv_style_set_outline_opa(&cb_bullet, LV_STATE_FOCUSED, LV_OPA_TRANSP);
     lv_style_set_radius(&cb_bullet, LV_STATE_DEFAULT, LV_DPI / 50);
     lv_style_set_pattern_image(&cb_bullet, LV_STATE_CHECKED, LV_SYMBOL_OK);
@@ -603,7 +604,7 @@ static void btnmatrix_init(void)
 static void keyboard_init(void)
 {
 #if LV_USE_KEYBOARD
-    lv_style_init(&kb_bg);
+    style_init_reset(&kb_bg);
     lv_style_set_radius(&kb_bg, LV_STATE_DEFAULT, 0);
     lv_style_set_border_width(&kb_bg, LV_STATE_DEFAULT, (LV_DPI / 50 > 0 ? LV_DPI / 50 : 1));
     lv_style_set_border_side(&kb_bg, LV_STATE_DEFAULT, LV_BORDER_SIDE_TOP);
@@ -619,7 +620,7 @@ static void keyboard_init(void)
 static void msgbox_init(void)
 {
 #if LV_USE_MSGBOX
-    lv_style_init(&mbox_bg);
+    style_init_reset(&mbox_bg);
     lv_style_set_shadow_width(&mbox_bg, LV_STATE_DEFAULT, LV_DPI / 4);
     lv_style_set_shadow_color(&mbox_bg, LV_STATE_DEFAULT, LV_COLOR_SILVER);
 
@@ -629,7 +630,7 @@ static void msgbox_init(void)
 static void page_init(void)
 {
 #if LV_USE_PAGE
-    lv_style_init(&sb);
+    style_init_reset(&sb);
     lv_style_set_bg_opa(&sb, LV_STATE_DEFAULT, LV_OPA_COVER);
     lv_style_set_bg_color(&sb, LV_STATE_DEFAULT,  (IS_LIGHT ? lv_color_hex(0xcccfd1) : lv_color_hex(0x505559)));
     lv_style_set_radius(&sb, LV_STATE_DEFAULT, LV_RADIUS_CIRCLE);
@@ -643,13 +644,13 @@ static void page_init(void)
 static void textarea_init(void)
 {
 #if LV_USE_TEXTAREA
-    lv_style_init(&ta_cursor);
+    style_init_reset(&ta_cursor);
     lv_style_set_border_color(&ta_cursor, LV_STATE_DEFAULT, COLOR_BG_SEC_TEXT);
     lv_style_set_border_width(&ta_cursor, LV_STATE_DEFAULT, 2);
     lv_style_set_pad_left(&ta_cursor, LV_STATE_DEFAULT, 1);
     lv_style_set_border_side(&ta_cursor, LV_STATE_DEFAULT, LV_BORDER_SIDE_LEFT);
 
-    lv_style_init(&ta_placeholder);
+    style_init_reset(&ta_placeholder);
     lv_style_set_text_color(&ta_placeholder, LV_STATE_DEFAULT, COLOR_BG_TEXT_DIS);
 #endif
 }
@@ -658,7 +659,7 @@ static void spinbox_init(void)
 {
 #if LV_USE_SPINBOX
 
-    lv_style_init(&spinbox_cursor);
+    style_init_reset(&spinbox_cursor);
     lv_style_set_bg_opa(&spinbox_cursor, LV_STATE_DEFAULT, LV_OPA_COVER);
     lv_style_set_bg_color(&spinbox_cursor, LV_STATE_DEFAULT, theme.color_primary);
     lv_style_set_text_color(&spinbox_cursor, LV_STATE_DEFAULT, LV_COLOR_WHITE);
@@ -671,7 +672,7 @@ static void spinbox_init(void)
 static void list_init(void)
 {
 #if LV_USE_LIST != 0
-    lv_style_init(&list_bg);
+    style_init_reset(&list_bg);
     lv_style_set_clip_corner(&list_bg, LV_STATE_DEFAULT, true);
     lv_style_set_pad_left(&list_bg, LV_STATE_DEFAULT, 0);
     lv_style_set_pad_right(&list_bg, LV_STATE_DEFAULT, 0);
@@ -679,7 +680,7 @@ static void list_init(void)
     lv_style_set_pad_bottom(&list_bg, LV_STATE_DEFAULT, 0);
     lv_style_set_pad_inner(&list_bg, LV_STATE_DEFAULT, 0);
 
-    lv_style_init(&list_btn);
+    style_init_reset(&list_btn);
     lv_style_set_bg_opa(&list_btn, LV_STATE_DEFAULT, LV_OPA_COVER);
     lv_style_set_bg_color(&list_btn, LV_STATE_DEFAULT, COLOR_BG);
     lv_style_set_bg_color(&list_btn, LV_STATE_PRESSED, COLOR_BG_PR);
@@ -706,9 +707,6 @@ static void list_init(void)
     lv_style_set_pad_bottom(&list_btn, LV_STATE_DEFAULT, LV_DPI / 10);
     lv_style_set_pad_inner(&list_btn, LV_STATE_DEFAULT, LV_DPI / 10);
 
-    lv_style_set_margin_top(&list_btn, LV_STATE_CHECKED, LV_DPI / 10);
-    lv_style_set_margin_bottom(&list_btn, LV_STATE_CHECKED, LV_DPI / 10);
-
     lv_style_set_transform_width(&list_btn, LV_STATE_DEFAULT, - LV_DPI / 10);
     lv_style_set_transform_width(&list_btn, LV_STATE_PRESSED, 0);
     lv_style_set_transform_width(&list_btn, LV_STATE_CHECKED, 0);
@@ -717,8 +715,6 @@ static void list_init(void)
     lv_style_set_transition_time(&list_btn, LV_STATE_DEFAULT, TRANSITION_TIME);
     lv_style_set_transition_prop_6(&list_btn, LV_STATE_DEFAULT, LV_STYLE_BG_COLOR);
     lv_style_set_transition_prop_5(&list_btn, LV_STATE_DEFAULT, LV_STYLE_TRANSFORM_WIDTH);
-    lv_style_set_transition_prop_4(&list_btn, LV_STATE_DEFAULT, LV_STYLE_MARGIN_TOP);
-    lv_style_set_transition_prop_3(&list_btn, LV_STATE_DEFAULT, LV_STYLE_MARGIN_BOTTOM);
 #endif
 }
 
@@ -726,10 +722,10 @@ static void ddlist_init(void)
 {
 #if LV_USE_DROPDOWN != 0
 
-    lv_style_init(&ddlist_page);
+    style_init_reset(&ddlist_page);
     lv_style_set_text_line_space(&ddlist_page, LV_STATE_DEFAULT, LV_DPI / 5);
 
-    lv_style_init(&ddlist_sel);
+    style_init_reset(&ddlist_sel);
     lv_style_set_bg_opa(&ddlist_sel, LV_STATE_DEFAULT, LV_OPA_COVER);
     lv_style_set_bg_color(&ddlist_sel, LV_STATE_DEFAULT, theme.color_primary);
     lv_style_set_text_color(&ddlist_sel, LV_STATE_DEFAULT, IS_LIGHT ? lv_color_hex3(0xfff) : lv_color_hex3(0xfff));
@@ -741,10 +737,10 @@ static void ddlist_init(void)
 static void roller_init(void)
 {
 #if LV_USE_ROLLER != 0
-    lv_style_init(&roller_bg);
+    style_init_reset(&roller_bg);
     lv_style_set_text_line_space(&roller_bg, LV_STATE_DEFAULT, LV_DPI / 8);
 
-    lv_style_init(&roller_sel);
+    style_init_reset(&roller_sel);
     lv_style_set_bg_opa(&roller_sel, LV_STATE_DEFAULT, LV_OPA_COVER);
     lv_style_set_bg_color(&roller_sel, LV_STATE_DEFAULT, theme.color_primary);
     lv_style_set_text_color(&roller_sel, LV_STATE_DEFAULT, LV_COLOR_WHITE);
@@ -754,7 +750,7 @@ static void roller_init(void)
 static void tabview_init(void)
 {
 #if LV_USE_TABVIEW != 0
-    lv_style_init(&tabview_btns_bg);
+    style_init_reset(&tabview_btns_bg);
     lv_style_set_bg_opa(&tabview_btns_bg, LV_STATE_DEFAULT, LV_OPA_COVER);
     lv_style_set_bg_color(&tabview_btns_bg, LV_STATE_DEFAULT, COLOR_BG);
     lv_style_set_border_color(&tabview_btns_bg, LV_STATE_DEFAULT,
@@ -768,7 +764,7 @@ static void tabview_init(void)
     lv_style_set_pad_left(&tabview_btns_bg, LV_STATE_DEFAULT, LV_DPI / 30);
     lv_style_set_pad_right(&tabview_btns_bg, LV_STATE_DEFAULT, LV_DPI / 30);
 
-    lv_style_init(&tabview_btns);
+    style_init_reset(&tabview_btns);
     lv_style_set_bg_opa(&tabview_btns, LV_STATE_PRESSED, LV_OPA_50);
     lv_style_set_bg_color(&tabview_btns, LV_STATE_PRESSED, lv_color_hex3(0x888));
     lv_style_set_text_color(&tabview_btns, LV_STATE_CHECKED, COLOR_SCR_TEXT);
@@ -776,13 +772,13 @@ static void tabview_init(void)
     lv_style_set_pad_bottom(&tabview_btns, LV_STATE_DEFAULT, LV_DPI / 10);
     lv_style_set_text_color(&tabview_btns, LV_STATE_FOCUSED, theme.color_primary);
 
-    lv_style_init(&tabview_indic);
+    style_init_reset(&tabview_indic);
     lv_style_set_bg_opa(&tabview_indic, LV_STATE_DEFAULT, LV_OPA_COVER);
     lv_style_set_bg_color(&tabview_indic, LV_STATE_DEFAULT, theme.color_primary);
     lv_style_set_size(&tabview_indic, LV_STATE_DEFAULT, LV_DPI / 40 > 0 ? LV_DPI / 40 : 1);
     lv_style_set_radius(&tabview_indic, LV_STATE_DEFAULT, LV_RADIUS_CIRCLE);
 
-    lv_style_init(&tabview_page_scrl);
+    style_init_reset(&tabview_page_scrl);
     lv_style_set_pad_top(&tabview_page_scrl, LV_STATE_DEFAULT, LV_DPI / 10);
     lv_style_set_pad_bottom(&tabview_page_scrl, LV_STATE_DEFAULT, LV_DPI / 10);
     lv_style_set_pad_left(&tabview_page_scrl, LV_STATE_DEFAULT, LV_DPI / 10);
@@ -800,7 +796,7 @@ static void tileview_init(void)
 static void table_init(void)
 {
 #if LV_USE_TABLE != 0
-    lv_style_init(&table_cell);
+    style_init_reset(&table_cell);
     lv_style_set_border_color(&table_cell, LV_STATE_DEFAULT, COLOR_BG_BORDER);
     lv_style_set_border_width(&table_cell, LV_STATE_DEFAULT, 1);
     lv_style_set_border_side(&table_cell, LV_STATE_DEFAULT, LV_BORDER_SIDE_TOP | LV_BORDER_SIDE_BOTTOM);
@@ -881,6 +877,8 @@ lv_theme_t * lv_theme_material_init(lv_color_t color_primary, lv_color_t color_s
 
     theme.apply_cb = lv_theme_material_apply;
 
+    inited = true;
+
     lv_obj_report_style_mod(NULL);
 
     return &theme;
@@ -1388,13 +1386,16 @@ void lv_theme_material_apply(lv_obj_t * obj, lv_theme_style_t name)
 
 
     lv_obj_refresh_style(obj, LV_STYLE_PROP_ALL);
-
-
 }
 
 /**********************
  *   STATIC FUNCTIONS
  **********************/
 
+static void style_init_reset(lv_style_t * style)
+{
+    if(inited) lv_style_reset(style);
+    else lv_style_init(style);
+}
 
 #endif
diff --git a/src/lv_widgets/lv_gauge.c b/src/lv_widgets/lv_gauge.c
index 98822e5f5..5fee44476 100644
--- a/src/lv_widgets/lv_gauge.c
+++ b/src/lv_widgets/lv_gauge.c
@@ -194,9 +194,58 @@ void lv_gauge_set_value(lv_obj_t * gauge, uint8_t needle_id, int32_t value)
     else if(value < min)
         value = min;
 
+    int32_t old_value = ext->values[needle_id];
     ext->values[needle_id] = value;
 
-    lv_obj_invalidate(gauge);
+//    lv_obj_invalidate(gauge);
+
+    lv_style_int_t pad = lv_obj_get_style_pad_inner(gauge, LV_GAUGE_PART_NEEDLE);
+    lv_style_int_t left = lv_obj_get_style_pad_left(gauge, LV_GAUGE_PART_MAIN);
+    lv_style_int_t right = lv_obj_get_style_pad_right(gauge, LV_GAUGE_PART_MAIN);
+    lv_style_int_t top = lv_obj_get_style_pad_top(gauge, LV_GAUGE_PART_MAIN);
+     lv_coord_t r      = (lv_obj_get_width(gauge) - left - right) / 2 - pad;
+     lv_coord_t x_ofs  = gauge->coords.x1 + r + left + pad;
+     lv_coord_t y_ofs  = gauge->coords.y1 + r + top + pad;
+     uint16_t angle    = lv_linemeter_get_scale_angle(gauge);
+     int16_t angle_ofs = 90 + (360 - angle) / 2;
+     lv_point_t p_mid;
+     lv_point_t p_end;
+     lv_coord_t needle_w;
+
+     if(ext->needle_img) {
+         lv_img_header_t info;
+         lv_img_decoder_get_info(ext->needle_img, &info);
+         needle_w = info.h;
+     } else {
+         needle_w = lv_obj_get_style_line_width(gauge, LV_GAUGE_PART_NEEDLE);
+     }
+
+     p_mid.x = x_ofs;
+     p_mid.y = y_ofs;
+     /*Calculate the end point of a needle*/
+     int16_t needle_angle = (old_value - min) * angle / (max - min) + angle_ofs;
+
+     p_end.y = (lv_trigo_sin(needle_angle) * r) / LV_TRIGO_SIN_MAX + y_ofs;
+     p_end.x = (lv_trigo_sin(needle_angle + 90) * r) / LV_TRIGO_SIN_MAX + x_ofs;
+
+     lv_area_t a;
+     a.x1 = LV_MATH_MIN(p_mid.x, p_end.x) - needle_w;
+     a.y1 = LV_MATH_MIN(p_mid.y, p_end.y) - needle_w;
+     a.x2 = LV_MATH_MAX(p_mid.x, p_end.x) + needle_w;
+     a.y2 = LV_MATH_MAX(p_mid.y, p_end.y) + needle_w;
+     lv_obj_invalidate_area(gauge, &a);
+
+     needle_angle = (value - min) * angle / (max - min) + angle_ofs;
+     p_end.y = (lv_trigo_sin(needle_angle) * r) / LV_TRIGO_SIN_MAX + y_ofs;
+     p_end.x = (lv_trigo_sin(needle_angle + 90) * r) / LV_TRIGO_SIN_MAX + x_ofs;
+
+     a.x1 = LV_MATH_MIN(p_mid.x, p_end.x);
+     a.y1 = LV_MATH_MIN(p_mid.y, p_end.y);
+     a.x2 = LV_MATH_MAX(p_mid.x, p_end.x);
+     a.y2 = LV_MATH_MAX(p_mid.y, p_end.y);
+     lv_obj_invalidate_area(gauge, &a);
+
+
 }
 
 /**
@@ -552,7 +601,6 @@ static void lv_gauge_draw_needle(lv_obj_t * gauge, const lv_area_t * clip_area)
     p_mid.y = y_ofs;
     for(i = 0; i < ext->needle_count; i++) {
         /*Calculate the end point of a needle*/
-
         int16_t needle_angle =
             (ext->values[i] - min) * angle / (max - min) + angle_ofs;
 
diff --git a/src/lv_widgets/lv_linemeter.c b/src/lv_widgets/lv_linemeter.c
index 779e157bb..487f45666 100644
--- a/src/lv_widgets/lv_linemeter.c
+++ b/src/lv_widgets/lv_linemeter.c
@@ -120,9 +120,93 @@ void lv_linemeter_set_value(lv_obj_t * lmeter, int32_t value)
     lv_linemeter_ext_t * ext = lv_obj_get_ext_attr(lmeter);
     if(ext->cur_value == value) return;
 
+    int32_t old_value = ext->cur_value;
+
     ext->cur_value = value > ext->max_value ? ext->max_value : value;
     ext->cur_value = ext->cur_value < ext->min_value ? ext->min_value : ext->cur_value;
-    lv_obj_invalidate(lmeter);
+
+    int16_t level_old =
+            (int32_t)((int32_t)(old_value - ext->min_value) * ext->line_cnt) / (ext->max_value - ext->min_value);
+    int16_t level_new =
+            (int32_t)((int32_t)(ext->cur_value - ext->min_value) * ext->line_cnt) / (ext->max_value - ext->min_value);
+
+    if(level_new == level_old) {
+        return;
+    }
+
+    lv_style_int_t left = lv_obj_get_style_pad_left(lmeter, LV_LINEMETER_PART_MAIN);
+    lv_style_int_t right = lv_obj_get_style_pad_right(lmeter, LV_LINEMETER_PART_MAIN);
+    lv_style_int_t top = lv_obj_get_style_pad_top(lmeter, LV_LINEMETER_PART_MAIN);
+    lv_style_int_t bottom = lv_obj_get_style_pad_bottom(lmeter, LV_LINEMETER_PART_MAIN);
+
+    lv_coord_t r_out = (lv_obj_get_width(lmeter) - left - right) / 2 ;
+    lv_coord_t r_in  = r_out - lv_obj_get_style_scale_width(lmeter, LV_LINEMETER_PART_MAIN);
+    if(r_in < 1) r_in = 1;
+
+    lv_coord_t x_ofs  = lmeter->coords.x1 + r_out + left;
+    lv_coord_t y_ofs  = lmeter->coords.y1 + r_out + top;
+    int16_t angle_ofs = ext->angle_ofs + 90 + (360 - ext->scale_angle) / 2;
+
+    lv_style_int_t line_width = lv_obj_get_style_scale_end_line_width(lmeter, LV_LINEMETER_PART_MAIN);
+    lv_style_int_t end_line_width = lv_obj_get_style_scale_end_line_width(lmeter, LV_LINEMETER_PART_MAIN);
+    line_width = LV_MATH_MAX(line_width, end_line_width);
+
+    int32_t angle_old = (level_old * ext->scale_angle) / (ext->line_cnt - 1);
+
+    /*Use smaller clip area only around the visible line*/
+    int32_t y_in_old  = (int32_t)((int32_t)lv_trigo_sin(angle_old + angle_ofs) * r_in) >> LV_TRIGO_SHIFT;
+    int32_t x_in_old  = (int32_t)((int32_t)lv_trigo_sin(angle_old + 90 + angle_ofs) * r_in) >> LV_TRIGO_SHIFT;
+
+
+    int32_t y_out_old  = (int32_t)((int32_t)lv_trigo_sin(angle_old + angle_ofs) * r_out) >> LV_TRIGO_SHIFT;
+    int32_t x_out_old  = (int32_t)((int32_t)lv_trigo_sin(angle_old + 90 + angle_ofs) * r_out) >> LV_TRIGO_SHIFT;
+
+
+
+    int32_t angle_new = (level_new * ext->scale_angle) / (ext->line_cnt - 1);
+
+    /*Use smaller clip area only around the visible line*/
+    int32_t y_in_new  = (int32_t)((int32_t)lv_trigo_sin(angle_new + angle_ofs) * r_in) >> LV_TRIGO_SHIFT;
+    int32_t x_in_new  = (int32_t)((int32_t)lv_trigo_sin(angle_new + 90 + angle_ofs) * r_in) >> LV_TRIGO_SHIFT;
+
+
+    int32_t y_out_new  = (int32_t)((int32_t)lv_trigo_sin(angle_new + angle_ofs) * r_out) >> LV_TRIGO_SHIFT;
+    int32_t x_out_new  = (int32_t)((int32_t)lv_trigo_sin(angle_new + 90 + angle_ofs) * r_out) >> LV_TRIGO_SHIFT;
+
+    lv_area_t a;
+    if(x_out_old < 0 && x_out_new < 0) {
+        a.x1 = lmeter->coords.x1 + left - line_width;
+        a.y1 = LV_MATH_MIN4(y_out_old, y_out_new, y_in_old, y_in_new) + y_ofs - line_width;
+        a.x2 = LV_MATH_MAX(x_in_old, x_in_new) + x_ofs + line_width;
+        a.y2 = LV_MATH_MAX4(y_out_old, y_out_new, y_in_old, y_in_new) + y_ofs + line_width;
+    }
+    else if(x_out_old > 0 && x_out_new > 0) {
+        a.x1 = LV_MATH_MIN(x_in_old, x_in_new) + x_ofs - line_width;
+        a.y1 = LV_MATH_MIN4(y_out_old, y_out_new, y_in_old, y_in_new) + y_ofs - line_width;
+        a.x2 = lmeter->coords.x2 - right + line_width;
+        a.y2 = LV_MATH_MAX4(y_out_old, y_out_new, y_in_old, y_in_new) + y_ofs + line_width;
+    }
+    else if(y_out_old < 0 && y_out_new < 0) {
+        a.x1 = LV_MATH_MIN4(x_out_old, x_out_new, x_in_old, x_in_new) + x_ofs - line_width;
+        a.y1 = lmeter->coords.y1 + top - line_width;
+        a.x2 = LV_MATH_MAX4(x_out_old, x_out_new, x_in_old, x_in_new) + x_ofs + line_width;
+        a.y2 = LV_MATH_MAX(y_in_old, y_in_new) + y_ofs + line_width;
+    }
+    else if(y_out_old > 0 && y_out_new > 0) {
+        a.x1 = LV_MATH_MIN4(x_out_old, x_out_new, x_in_old, x_in_new) + x_ofs - line_width;
+        a.y1 = LV_MATH_MIN(y_in_old, y_in_new) + y_ofs - line_width;
+        a.x2 = LV_MATH_MAX4(x_out_old, x_out_new, x_in_old, x_in_new) + x_ofs + line_width;
+        a.y2 = lmeter->coords.y2 - bottom + line_width;
+    }
+    else {
+        a.x1 = lmeter->coords.x1 + left - line_width;
+        a.y1 = lmeter->coords.y1 + top - line_width;
+        a.x2 = lmeter->coords.x2 - right + line_width;
+        a.y2 = lmeter->coords.y2 - bottom + line_width;
+    }
+
+    lv_obj_invalidate_area(lmeter, &a);
+
 }
 
 /**
diff --git a/src/lv_widgets/lv_page.c b/src/lv_widgets/lv_page.c
index 7b6e85a1a..deb23ea07 100644
--- a/src/lv_widgets/lv_page.c
+++ b/src/lv_widgets/lv_page.c
@@ -867,7 +867,6 @@ static lv_res_t lv_page_signal(lv_obj_t * page, lv_signal_t sign, void * param)
         /*Refresh the scrollbar and notify the scrl if the size is changed*/
         if(ext->scrl != NULL && (lv_obj_get_width(page) != lv_area_get_width(param) ||
                                  lv_obj_get_height(page) != lv_area_get_height(param))) {
-            /*If no hor_fit enabled set the scrollable's width to the page's width*/
             ext->scrl->signal_cb(ext->scrl, LV_SIGNAL_COORD_CHG, &ext->scrl->coords);
 
             /*The scrollbars are important only if they are visible now*/
diff --git a/src/lv_widgets/lv_roller.c b/src/lv_widgets/lv_roller.c
index 9588a50e7..ecd7ce80c 100644
--- a/src/lv_widgets/lv_roller.c
+++ b/src/lv_widgets/lv_roller.c
@@ -90,6 +90,7 @@ lv_obj_t * lv_roller_create(lv_obj_t * par, const lv_obj_t * copy)
     ext->option_cnt = 0;
     ext->sel_opt_id = 0;
     ext->sel_opt_id_ori = 0;
+    ext->auto_fit = 1;
     lv_style_list_init(&ext->style_sel);
 
     /*The signal and design functions are not copied so set them here*/
@@ -120,7 +121,7 @@ lv_obj_t * lv_roller_create(lv_obj_t * par, const lv_obj_t * copy)
     else {
         lv_roller_ext_t * copy_ext = lv_obj_get_ext_attr(copy);
         lv_roller_set_options(roller, lv_roller_get_options(copy), copy_ext->mode);
-
+        ext->auto_fit = copy_ext->auto_fit;
         lv_obj_t * scrl = lv_page_get_scrl(roller);
         lv_obj_set_signal_cb(scrl, lv_roller_scrl_signal);
     }
@@ -186,8 +187,8 @@ void lv_roller_set_options(lv_obj_t * roller, const char * options, lv_roller_mo
     ext->sel_opt_id_ori = ext->sel_opt_id;
 
 
-    refr_width(roller);
-    refr_height(roller);
+//    refr_width(roller);
+//    refr_height(roller);
     refr_position(roller, LV_ANIM_OFF);
 }
 
@@ -204,6 +205,7 @@ void lv_roller_set_align(lv_obj_t * roller, lv_label_align_t align)
     if(label == NULL) return; /*Probably the roller is being deleted if the label is NULL.*/
 
     lv_label_set_align(label, align);
+    refr_width(roller); /*To set the correct label position*/
 }
 
 /**
@@ -255,6 +257,19 @@ void lv_roller_set_visible_row_count(lv_obj_t * roller, uint8_t row_cnt)
     refr_position(roller, LV_ANIM_OFF);
 }
 
+/**
+ * Allow automatically setting the width of roller according to it's content.
+ * @param roller pointer to a roller object
+ * @param auto_fit true: enable auto fit
+ */
+void lv_roller_set_auto_fit(lv_obj_t * roller, bool auto_fit)
+{
+    LV_ASSERT_OBJ(roller, LV_OBJX_NAME);
+    lv_roller_ext_t * ext = lv_obj_get_ext_attr(roller);
+    ext->auto_fit = auto_fit;
+    refr_width(roller);
+}
+
 /*=====================
  * Getter functions
  *====================*/
@@ -342,6 +357,17 @@ lv_label_align_t lv_roller_get_align(const lv_obj_t * roller)
     return lv_label_get_align(get_label(roller));
 }
 
+/**
+ * Get whether the auto fit option is enabled or not.
+ * @param roller pointer to a roller object
+ * @return true: auto fit is enabled
+ */
+bool lv_roller_get_auto_fit(lv_obj_t * roller)
+{
+    LV_ASSERT_OBJ(roller, LV_OBJX_NAME);
+    lv_roller_ext_t * ext = lv_obj_get_ext_attr(roller);
+    return ext->auto_fit ? true : false;
+}
 
 /**
  * Get the options of a roller
@@ -473,6 +499,7 @@ static lv_res_t lv_roller_signal(lv_obj_t * roller, lv_signal_t sign, void * par
             lv_anim_del(lv_page_get_scrl(roller), (lv_anim_exec_xcb_t)lv_obj_set_y);
 #endif
             refr_position(roller, false);
+            refr_width(roller);
         }
     }
     else if(sign == LV_SIGNAL_RELEASED) {
@@ -617,6 +644,14 @@ static lv_res_t lv_roller_scrl_signal(lv_obj_t * roller_scrl, lv_signal_t sign,
         lv_anim_del(roller_scrl, (lv_anim_exec_xcb_t)lv_obj_set_y);
 #endif
     }
+    else if(sign == LV_SIGNAL_PARENT_SIZE_CHG) {
+#if LV_USE_ANIMATION
+            lv_anim_del(lv_page_get_scrl(roller), (lv_anim_exec_xcb_t)lv_obj_set_y);
+#endif
+            refr_position(roller, false);
+            refr_width(roller);
+
+    }
 
     /*Position the scrollable according to the new selected option*/
     if(id != -1) {
@@ -800,6 +835,21 @@ static void refr_width(lv_obj_t * roller)
     lv_obj_t * label = get_label(roller);
     if(label == NULL) return;
 
+    switch(lv_label_get_align(label)) {
+    case LV_LABEL_ALIGN_LEFT:
+        lv_obj_align(label, NULL, LV_ALIGN_IN_LEFT_MID, 0, 0);
+        break;
+    case LV_LABEL_ALIGN_CENTER:
+        lv_obj_align(label, NULL, LV_ALIGN_CENTER, 0, 0);
+        break;
+    case LV_LABEL_ALIGN_RIGHT:
+        lv_obj_align(label, NULL, LV_ALIGN_IN_RIGHT_MID, 0, 0);
+        break;
+    }
+
+
+    if(lv_roller_get_auto_fit(roller) == false) return;
+
     lv_coord_t label_w = lv_obj_get_width(label);
 
     lv_style_int_t left = lv_obj_get_style_pad_left(roller, LV_ROLLER_PART_BG);
@@ -818,7 +868,7 @@ static void refr_height(lv_obj_t * roller)
     if(label == NULL) return;
 
     lv_obj_set_height(lv_page_get_scrl(roller), lv_obj_get_height(label) + lv_obj_get_height(roller));
-    lv_obj_align(label, NULL, LV_ALIGN_CENTER, 0, 0);
+
 #if LV_USE_ANIMATION
     lv_anim_del(lv_page_get_scrl(roller), (lv_anim_exec_xcb_t)lv_obj_set_y);
 #endif
diff --git a/src/lv_widgets/lv_roller.h b/src/lv_widgets/lv_roller.h
index fd7f9366d..18afff73e 100644
--- a/src/lv_widgets/lv_roller.h
+++ b/src/lv_widgets/lv_roller.h
@@ -54,6 +54,7 @@ typedef struct {
     uint16_t sel_opt_id;          /*Index of the current option*/
     uint16_t sel_opt_id_ori;      /*Store the original index on focus*/
     lv_roller_mode_t mode : 1;
+    uint8_t auto_fit : 1;         /*1: Automatically set the width*/
 } lv_roller_ext_t;
 
 enum {
@@ -109,6 +110,13 @@ void lv_roller_set_selected(lv_obj_t * roller, uint16_t sel_opt, lv_anim_enable_
  */
 void lv_roller_set_visible_row_count(lv_obj_t * roller, uint8_t row_cnt);
 
+/**
+ * Allow automatically setting the width of roller according to it's content.
+ * @param roller pointer to a roller object
+ * @param auto_fit true: enable auto fit
+ */
+void lv_roller_set_auto_fit(lv_obj_t * roller, bool auto_fit);
+
 /**
  * Set the open/close animation time.
  * @param roller pointer to a roller object
@@ -151,6 +159,13 @@ void lv_roller_get_selected_str(const lv_obj_t * roller, char * buf, uint16_t bu
  */
 lv_label_align_t lv_roller_get_align(const lv_obj_t * roller);
 
+/**
+ * Get whether the auto fit option is enabled or not.
+ * @param roller pointer to a roller object
+ * @return true: auto fit is enabled
+ */
+bool lv_roller_get_auto_fit(lv_obj_t * roller);
+
 /**
  * Get the options of a roller
  * @param roller pointer to roller object
diff --git a/src/lv_widgets/lv_spinbox.c b/src/lv_widgets/lv_spinbox.c
index e9b0e81f4..b09467dcb 100644
--- a/src/lv_widgets/lv_spinbox.c
+++ b/src/lv_widgets/lv_spinbox.c
@@ -84,7 +84,7 @@ lv_obj_t * lv_spinbox_create(lv_obj_t * par, const lv_obj_t * copy)
     lv_obj_set_signal_cb(spinbox, lv_spinbox_signal);
     lv_obj_set_design_cb(spinbox, ancestor_design); /*Leave the Text area's design function*/
 
-    /*Init the new spinbox spinbox*/
+    /*Init the new spinbox*/
     if(copy == NULL) {
         /* No scrolling will happen here so make the scrollable non-clickable
          * It allows to handle input events in the bg object only.*/