replace all memcpy with lv_memcpy

src/lv_core/lv_debug.c

@@ -159,7 +159,7 @@ void lv_debug_log_error(const char * msg, uint64_t value)
         char * bufp = buf;
 
         /*Add the function name*/
-        memcpy(bufp, msg, msg_len);
+        lv_memcpy(bufp, msg, msg_len);
         bufp += msg_len;
 
         /*Add value in hey*/

src/lv_core/lv_obj.c

@@ -328,7 +328,7 @@ lv_obj_t * lv_obj_create(lv_obj_t * parent, const lv_obj_t * copy)
 
         /*Set user data*/
 #if LV_USE_USER_DATA
-        memcpy(&new_obj->user_data, &copy->user_data, sizeof(lv_obj_user_data_t));
+        lv_memcpy(&new_obj->user_data, &copy->user_data, sizeof(lv_obj_user_data_t));
 #endif
 
         /*Copy realign*/
@@ -800,9 +800,35 @@ void lv_obj_set_height(lv_obj_t * obj, lv_coord_t h)
     lv_obj_set_size(obj, lv_obj_get_width(obj), h);
 }
 
+/**
+ * Set the width reduced by the left and right padding.
+ * @param obj pointer to an object
+ * @param w the width without paddings
+ */
+void lv_obj_set_width_fit(const lv_obj_t * obj, lv_coord_t w)
+{
+    lv_style_int_t pleft = lv_obj_get_style_pad_left(obj, LV_OBJ_PART_MAIN);
+    lv_style_int_t pright = lv_obj_get_style_pad_right(obj, LV_OBJ_PART_MAIN);
+
+    lv_obj_set_width(obj, w - pleft - pright);
+}
+
+/**
+ * Set the height reduced by the top and bottom padding.
+ * @param obj pointer to an object
+ * @param h the height without paddings
+ */
+void lv_obj_set_height_fit(const lv_obj_t * obj, lv_coord_t h)
+{
+    lv_style_int_t ptop = lv_obj_get_style_pad_top(obj, LV_OBJ_PART_MAIN);
+    lv_style_int_t pbottom = lv_obj_get_style_pad_bottom(obj, LV_OBJ_PART_MAIN);
+
+    lv_obj_set_width(obj, h - ptop - pbottom);
+}
+
 /**
  * Set the width of an object by taking the left and right margin into account.
- * The object heigwidthht will be `obj_w = w - margon_left - margin_right`
+ * The object width will be `obj_w = w - margon_left - margin_right`
  * @param obj pointer to an object
  * @param w new height including margins
  */
@@ -1267,7 +1293,7 @@ bool _lv_obj_remove_style_local_prop(lv_obj_t * obj, uint8_t part, lv_style_prop
 /**
  * Notify an object (and its children) about its style is modified
  * @param obj pointer to an object
- * @param prop `LV_STYLE_PROP_ALL` or an `LV_STYLE_...` property. It is used the optimize what needs to be refreshed.
+ * @param prop `LV_STYLE_PROP_ALL` or an `LV_STYLE_...` property. It is used to optimize what needs to be refreshed.
  */
 void lv_obj_refresh_style(lv_obj_t * obj, lv_style_property_t prop)
 {
@@ -2877,7 +2903,7 @@ void lv_obj_set_user_data(lv_obj_t * obj, lv_obj_user_data_t data)
 {
     LV_ASSERT_OBJ(obj, LV_OBJX_NAME);
 
-    memcpy(&obj->user_data, &data, sizeof(lv_obj_user_data_t));
+    lv_memcpy(&obj->user_data, &data, sizeof(lv_obj_user_data_t));
 }
 #endif
 

src/lv_core/lv_obj.h

@@ -426,9 +426,23 @@ void lv_obj_set_width(lv_obj_t * obj, lv_coord_t w);
  */
 void lv_obj_set_height(lv_obj_t * obj, lv_coord_t h);
 
+/**
+ * Set the width reduced by the left and right padding.
+ * @param obj pointer to an object
+ * @param w the width without paddings
+ */
+void lv_obj_set_width_fit(const lv_obj_t * obj, lv_coord_t w);
+
+/**
+ * Set the height reduced by the top and bottom padding.
+ * @param obj pointer to an object
+ * @param h the height without paddings
+ */
+void lv_obj_set_height_fit(const lv_obj_t * obj, lv_coord_t h);
+
 /**
  * Set the width of an object by taking the left and right margin into account.
- * The object heigwidthht will be `obj_w = w - margon_left - margin_right`
+ * The object width will be `obj_w = w - margon_left - margin_right`
  * @param obj pointer to an object
  * @param w new height including margins
  */
@@ -520,8 +534,9 @@ void lv_obj_clean_style_list(lv_obj_t * obj, uint8_t part);
 void lv_obj_reset_style_list(lv_obj_t * obj, uint8_t part);
 
 /**
- * Notify an object about its style is modified
+ * Notify an object (and its children) about its style is modified
  * @param obj pointer to an object
+ * @param prop `LV_STYLE_PROP_ALL` or an `LV_STYLE_...` property. It is used to optimize what needs to be refreshed.
  */
 void lv_obj_refresh_style(lv_obj_t * obj, lv_style_property_t prop);
 

src/lv_core/lv_refr.c

@@ -225,7 +225,7 @@ void lv_disp_refr_task(lv_task_t * task)
                     uint32_t line_length = lv_area_get_width(&disp_refr->inv_areas[a]) * sizeof(lv_color_t);
 
                     for(y = disp_refr->inv_areas[a].y1; y <= disp_refr->inv_areas[a].y2; y++) {
-                        memcpy(buf_act + start_offs, buf_ina + start_offs, line_length);
+                        lv_memcpy(buf_act + start_offs, buf_ina + start_offs, line_length);
                         start_offs += hres * sizeof(lv_color_t);
                     }
                 }

src/lv_core/lv_style.c

@@ -82,7 +82,7 @@ void lv_style_copy(lv_style_t * style_dest, const lv_style_t * style_src)
 
     uint16_t size = lv_style_get_mem_size(style_src);
     style_dest->map = lv_mem_alloc(size);
-    memcpy(style_dest->map, style_src->map, size);
+    lv_memcpy(style_dest->map, style_src->map, size);
 }
 
 /**
@@ -159,24 +159,24 @@ void lv_style_list_copy(lv_style_list_t * list_dest, const lv_style_list_t * lis
     if(list_src->has_local == 0) {
         if(list_src->has_trans) {
             list_dest->style_list = lv_mem_alloc((list_src->style_cnt - 1) * sizeof(lv_style_t *));
-            memcpy(list_dest->style_list, list_src->style_list + 1, (list_src->style_cnt - 1) * sizeof(lv_style_t *));
+            lv_memcpy(list_dest->style_list, list_src->style_list + 1, (list_src->style_cnt - 1) * sizeof(lv_style_t *));
             list_dest->style_cnt = list_src->style_cnt - 1;
         }
         else {
             list_dest->style_list = lv_mem_alloc(list_src->style_cnt * sizeof(lv_style_t *));
-            memcpy(list_dest->style_list, list_src->style_list, list_src->style_cnt * sizeof(lv_style_t *));
+            lv_memcpy(list_dest->style_list, list_src->style_list, list_src->style_cnt * sizeof(lv_style_t *));
             list_dest->style_cnt = list_src->style_cnt;
         }
     }
     else {
         if(list_src->has_trans) {
             list_dest->style_list = lv_mem_alloc((list_src->style_cnt - 2) * sizeof(lv_style_t *));
-            memcpy(list_dest->style_list, list_src->style_list + 2, (list_src->style_cnt - 2) * sizeof(lv_style_t *));
+            lv_memcpy(list_dest->style_list, list_src->style_list + 2, (list_src->style_cnt - 2) * sizeof(lv_style_t *));
             list_dest->style_cnt = list_src->style_cnt - 2;
         }
         else {
             list_dest->style_list = lv_mem_alloc((list_src->style_cnt - 1) * sizeof(lv_style_t *));
-            memcpy(list_dest->style_list, list_src->style_list + 1, (list_src->style_cnt - 1) * sizeof(lv_style_t *));
+            lv_memcpy(list_dest->style_list, list_src->style_list + 1, (list_src->style_cnt - 1) * sizeof(lv_style_t *));
             list_dest->style_cnt = list_src->style_cnt - 1;
         }
 
@@ -373,7 +373,7 @@ void _lv_style_set_int(lv_style_t * style, lv_style_property_t prop, lv_style_in
         attr_goal.full = (prop >> 8) & 0xFFU;
 
         if(attr_found.bits.state == attr_goal.bits.state) {
-            memcpy(style->map + id + sizeof(lv_style_property_t), &value, sizeof(lv_style_int_t));
+            lv_memcpy_small(style->map + id + sizeof(lv_style_property_t), &value, sizeof(lv_style_int_t));
             return;
         }
     }
@@ -390,9 +390,9 @@ void _lv_style_set_int(lv_style_t * style, lv_style_property_t prop, lv_style_in
     LV_ASSERT_MEM(style->map);
     if(style == NULL) return;
 
-    memcpy(style->map + size - new_prop_size - end_mark_size, &prop, sizeof(lv_style_property_t));
+    lv_memcpy_small(style->map + size - new_prop_size - end_mark_size, &prop, sizeof(lv_style_property_t));
-    memcpy(style->map + size - sizeof(lv_style_int_t) - end_mark_size, &value, sizeof(lv_style_int_t));
+    lv_memcpy_small(style->map + size - sizeof(lv_style_int_t) - end_mark_size, &value, sizeof(lv_style_int_t));
-    memcpy(style->map + size - end_mark_size, &end_mark, sizeof(end_mark));
+    lv_memcpy_small(style->map + size - end_mark_size, &end_mark, sizeof(end_mark));
 }
 
 /**
@@ -419,7 +419,7 @@ void _lv_style_set_color(lv_style_t * style, lv_style_property_t prop, lv_color_
         attr_goal.full = (prop >> 8) & 0xFFU;
 
         if(attr_found.bits.state == attr_goal.bits.state) {
-            memcpy(style->map + id + sizeof(lv_style_property_t), &color, sizeof(lv_color_t));
+            lv_memcpy_small(style->map + id + sizeof(lv_style_property_t), &color, sizeof(lv_color_t));
             return;
         }
     }
@@ -437,9 +437,9 @@ void _lv_style_set_color(lv_style_t * style, lv_style_property_t prop, lv_color_
     LV_ASSERT_MEM(style->map);
     if(style == NULL) return;
 
-    memcpy(style->map + size - new_prop_size - end_mark_size, &prop, sizeof(lv_style_property_t));
+    lv_memcpy_small(style->map + size - new_prop_size - end_mark_size, &prop, sizeof(lv_style_property_t));
-    memcpy(style->map + size - sizeof(lv_color_t) - end_mark_size, &color, sizeof(lv_color_t));
+    lv_memcpy_small(style->map + size - sizeof(lv_color_t) - end_mark_size, &color, sizeof(lv_color_t));
-    memcpy(style->map + size - end_mark_size, &end_mark, sizeof(end_mark));
+    lv_memcpy_small(style->map + size - end_mark_size, &end_mark, sizeof(end_mark));
 }
 
 /**
@@ -466,7 +466,7 @@ void _lv_style_set_opa(lv_style_t * style, lv_style_property_t prop, lv_opa_t op
         attr_goal.full = (prop >> 8) & 0xFFU;
 
         if(attr_found.bits.state == attr_goal.bits.state) {
-            memcpy(style->map + id + sizeof(lv_style_property_t), &opa, sizeof(lv_opa_t));
+            lv_memcpy_small(style->map + id + sizeof(lv_style_property_t), &opa, sizeof(lv_opa_t));
             return;
         }
     }
@@ -484,9 +484,9 @@ void _lv_style_set_opa(lv_style_t * style, lv_style_property_t prop, lv_opa_t op
     LV_ASSERT_MEM(style->map);
     if(style == NULL) return;
 
-    memcpy(style->map + size - new_prop_size - end_mark_size, &prop, sizeof(lv_style_property_t));
+    lv_memcpy_small(style->map + size - new_prop_size - end_mark_size, &prop, sizeof(lv_style_property_t));
-    memcpy(style->map + size - sizeof(lv_opa_t) - end_mark_size, &opa, sizeof(lv_opa_t));
+    lv_memcpy_small(style->map + size - sizeof(lv_opa_t) - end_mark_size, &opa, sizeof(lv_opa_t));
-    memcpy(style->map + size - end_mark_size, &end_mark, sizeof(end_mark));
+    lv_memcpy_small(style->map + size - end_mark_size, &end_mark, sizeof(end_mark));
 }
 
 /**
@@ -513,7 +513,7 @@ void _lv_style_set_ptr(lv_style_t * style, lv_style_property_t prop, _lv_style_f
         attr_goal.full = (prop >> 8) & 0xFFU;
 
         if(attr_found.bits.state == attr_goal.bits.state) {
-            memcpy(style->map + id + sizeof(lv_style_property_t), &p, sizeof(_lv_style_fptr_dptr_t));
+            lv_memcpy_small(style->map + id + sizeof(lv_style_property_t), &p, sizeof(_lv_style_fptr_dptr_t));
             return;
         }
     }
@@ -531,9 +531,9 @@ void _lv_style_set_ptr(lv_style_t * style, lv_style_property_t prop, _lv_style_f
     LV_ASSERT_MEM(style->map);
     if(style == NULL) return;
 
-    memcpy(style->map + size - new_prop_size - end_mark_size, &prop, sizeof(lv_style_property_t));
+    lv_memcpy_small(style->map + size - new_prop_size - end_mark_size, &prop, sizeof(lv_style_property_t));
-    memcpy(style->map + size - sizeof(_lv_style_fptr_dptr_t) - end_mark_size, &p, sizeof(_lv_style_fptr_dptr_t));
+    lv_memcpy_small(style->map + size - sizeof(_lv_style_fptr_dptr_t) - end_mark_size, &p, sizeof(_lv_style_fptr_dptr_t));
-    memcpy(style->map + size - end_mark_size, &end_mark, sizeof(end_mark));
+    lv_memcpy_small(style->map + size - end_mark_size, &end_mark, sizeof(end_mark));
 }
 
 /**
@@ -559,7 +559,7 @@ int16_t _lv_style_get_int(const lv_style_t * style, lv_style_property_t prop, vo
         return -1;
     }
     else {
-        memcpy(res, &style->map[id + sizeof(lv_style_property_t)], sizeof(lv_style_int_t));
+        lv_memcpy_small(res, &style->map[id + sizeof(lv_style_property_t)], sizeof(lv_style_int_t));
         lv_style_attr_t attr_act;
         attr_act.full = style->map[id + 1];
 
@@ -596,7 +596,7 @@ int16_t _lv_style_get_opa(const lv_style_t * style, lv_style_property_t prop, vo
         return -1;
     }
     else {
-        memcpy(res, &style->map[id + sizeof(lv_style_property_t)], sizeof(lv_opa_t));
+        lv_memcpy_small(res, &style->map[id + sizeof(lv_style_property_t)], sizeof(lv_opa_t));
         lv_style_attr_t attr_act;
         attr_act.full = style->map[id + 1];
 
@@ -630,7 +630,7 @@ int16_t _lv_style_get_color(const lv_style_t * style, lv_style_property_t prop,
         return -1;
     }
     else {
-        memcpy(res, &style->map[id + sizeof(lv_style_property_t)], sizeof(lv_color_t));
+        lv_memcpy_small(res, &style->map[id + sizeof(lv_style_property_t)], sizeof(lv_color_t));
         lv_style_attr_t attr_act;
         attr_act.full = style->map[id + 1];
 
@@ -665,7 +665,7 @@ int16_t _lv_style_get_ptr(const lv_style_t * style, lv_style_property_t prop, vo
         return -1;
     }
     else {
-        memcpy(res, &style->map[id + sizeof(lv_style_property_t)], sizeof(_lv_style_fptr_dptr_t));
+        lv_memcpy_small(res, &style->map[id + sizeof(lv_style_property_t)], sizeof(_lv_style_fptr_dptr_t));
         lv_style_attr_t attr_act;
         attr_act.full = style->map[id + 1];
 

src/lv_draw/lv_draw_label.c

@@ -275,7 +275,7 @@ void lv_draw_label(const lv_area_t * coords, const lv_area_t * mask, lv_draw_lab
                         /*Get the parameter*/
                         if(i - par_start == LABEL_RECOLOR_PAR_LENGTH + 1) {
                             char buf[LABEL_RECOLOR_PAR_LENGTH + 1];
-                            memcpy(buf, &bidi_txt[par_start], LABEL_RECOLOR_PAR_LENGTH);
+                            lv_memcpy_small(buf, &bidi_txt[par_start], LABEL_RECOLOR_PAR_LENGTH);
                             buf[LABEL_RECOLOR_PAR_LENGTH] = '\0';
                             int r, g, b;
                             r       = (hex_char_to_num(buf[0]) << 4) + hex_char_to_num(buf[1]);

src/lv_draw/lv_img_buf.c

@@ -59,7 +59,7 @@ lv_color_t lv_img_buf_get_px_color(lv_img_dsc_t * dsc, lv_coord_t x, lv_coord_t
        dsc->header.cf == LV_IMG_CF_TRUE_COLOR_ALPHA) {
         uint8_t px_size = lv_img_cf_get_px_size(dsc->header.cf) >> 3;
         uint32_t px     = dsc->header.w * y * px_size + x * px_size;
-        memcpy(&p_color, &buf_u8[px], sizeof(lv_color_t));
+        lv_memcpy_small(&p_color, &buf_u8[px], sizeof(lv_color_t));
 #if LV_COLOR_SIZE == 32
         p_color.ch.alpha = 0xFF; /*Only the color should be get so use a deafult alpha value*/
 #endif
@@ -246,12 +246,12 @@ void lv_img_buf_set_px_color(lv_img_dsc_t * dsc, lv_coord_t x, lv_coord_t y, lv_
     if(dsc->header.cf == LV_IMG_CF_TRUE_COLOR || dsc->header.cf == LV_IMG_CF_TRUE_COLOR_CHROMA_KEYED) {
         uint8_t px_size = lv_img_cf_get_px_size(dsc->header.cf) >> 3;
         uint32_t px     = dsc->header.w * y * px_size + x * px_size;
-        memcpy(&buf_u8[px], &c, px_size);
+        lv_memcpy_small(&buf_u8[px], &c, px_size);
     }
     else if(dsc->header.cf == LV_IMG_CF_TRUE_COLOR_ALPHA) {
         uint8_t px_size = lv_img_cf_get_px_size(dsc->header.cf) >> 3;
         uint32_t px     = dsc->header.w * y * px_size + x * px_size;
-        memcpy(&buf_u8[px], &c, px_size - 1); /*-1 to not overwrite the alpha value*/
+        lv_memcpy_small(&buf_u8[px], &c, px_size - 1); /*-1 to not overwrite the alpha value*/
     }
     else if(dsc->header.cf == LV_IMG_CF_INDEXED_1BIT) {
         buf_u8 += sizeof(lv_color32_t) * 2; /*Skip the palette*/
@@ -319,7 +319,7 @@ void lv_img_buf_set_palette(lv_img_dsc_t * dsc, uint8_t id, lv_color_t c)
     lv_color32_t c32;
     c32.full      = lv_color_to32(c);
     uint8_t * buf = (uint8_t *)dsc->data;
-    memcpy(&buf[id * sizeof(c32)], &c32, sizeof(c32));
+    lv_memcpy_small(&buf[id * sizeof(c32)], &c32, sizeof(c32));
 }
 
 /**
@@ -507,12 +507,12 @@ bool lv_img_buf_transform(lv_img_transform_dsc_t * dsc, lv_coord_t x, lv_coord_t
             px_size = LV_COLOR_SIZE >> 3;
 
             pxi     = dsc->cfg.src_w * ys_int * px_size + xs_int * px_size;
-            memcpy(&dsc->res.color, &src_u8[pxi], px_size);
+            lv_memcpy_small(&dsc->res.color, &src_u8[pxi], px_size);
         }
         else {
             px_size = LV_IMG_PX_SIZE_ALPHA_BYTE;
             pxi     = dsc->cfg.src_w * ys_int * px_size + xs_int * px_size;
-            memcpy(&dsc->res.color, &src_u8[pxi], px_size - 1);
+            lv_memcpy_small(&dsc->res.color, &src_u8[pxi], px_size - 1);
             dsc->res.opa = src_u8[pxi + px_size - 1];
         }
     }
@@ -669,9 +669,9 @@ static inline bool transform_anti_alias(lv_img_transform_dsc_t * dsc)
     lv_opa_t a11 = 0;
 
     if(dsc->tmp.native_color) {
-        memcpy(&c01, &src_u8[dsc->tmp.pxi + dsc->tmp.px_size * xn], sizeof(lv_color_t));
+        lv_memcpy_small(&c01, &src_u8[dsc->tmp.pxi + dsc->tmp.px_size * xn], sizeof(lv_color_t));
-        memcpy(&c10, &src_u8[dsc->tmp.pxi + dsc->cfg.src_w * dsc->tmp.px_size * yn], sizeof(lv_color_t));
+        lv_memcpy_small(&c10, &src_u8[dsc->tmp.pxi + dsc->cfg.src_w * dsc->tmp.px_size * yn], sizeof(lv_color_t));
-        memcpy(&c11, &src_u8[dsc->tmp.pxi + dsc->cfg.src_w * dsc->tmp.px_size * yn + dsc->tmp.px_size * xn],
+        lv_memcpy_small(&c11, &src_u8[dsc->tmp.pxi + dsc->cfg.src_w * dsc->tmp.px_size * yn + dsc->tmp.px_size * xn],
                sizeof(lv_color_t));
         if(dsc->tmp.has_alpha) {
             a10 = src_u8[dsc->tmp.pxi + dsc->tmp.px_size * xn + dsc->tmp.px_size - 1];

src/lv_draw/lv_img_decoder.c

@@ -353,7 +353,7 @@ lv_res_t lv_img_decoder_built_in_open(lv_img_decoder_t * decoder, lv_img_decoder
             return LV_RES_INV;
         }
 
-        memcpy(user_data->f, &f, sizeof(f));
+        lv_memcpy_small(user_data->f, &f, sizeof(f));
 
 #else
         LV_LOG_WARN("Image built-in decoder cannot read file because LV_USE_FILESYSTEM = 0");

src/lv_hal/lv_hal_disp.c

@@ -125,9 +125,9 @@ lv_disp_t * lv_disp_drv_register(lv_disp_drv_t * driver)
         return NULL;
     }
 
-    memcpy(&disp->driver, driver, sizeof(lv_disp_drv_t));
+    lv_memcpy(&disp->driver, driver, sizeof(lv_disp_drv_t));
-    memset(&disp->inv_area_joined, 0, sizeof(disp->inv_area_joined));
+    lv_memset_00(&disp->inv_area_joined, sizeof(disp->inv_area_joined));
-    memset(&disp->inv_areas, 0, sizeof(disp->inv_areas));
+    lv_memset_00(&disp->inv_areas, sizeof(disp->inv_areas));
     lv_ll_init(&disp->scr_ll, sizeof(lv_obj_t));
     disp->last_activity_time = 0;
 

src/lv_hal/lv_hal_indev.c

@@ -84,8 +84,8 @@ lv_indev_t * lv_indev_drv_register(lv_indev_drv_t * driver)
         return NULL;
     }
 
-    memset(indev, 0, sizeof(lv_indev_t));
+    lv_memset_00(indev, sizeof(lv_indev_t));
-    memcpy(&indev->driver, driver, sizeof(lv_indev_drv_t));
+    lv_memcpy(&indev->driver, driver, sizeof(lv_indev_drv_t));
 
     indev->proc.reset_query = 1;
     indev->cursor           = NULL;

src/lv_misc/lv_anim.c

@@ -107,7 +107,7 @@ void lv_anim_start(lv_anim_t * a)
 
     /*Initialize the animation descriptor*/
     a->time_orig = a->time;
-    memcpy(new_anim, a, sizeof(lv_anim_t));
+    lv_memcpy(new_anim, a, sizeof(lv_anim_t));
 
     /*Set the start value*/
     if(new_anim->early_apply) {
@@ -502,7 +502,7 @@ static bool anim_ready_handler(lv_anim_t * a)
         /*Create copy from the animation and delete the animation from the list.
          * This way the `ready_cb` will see the animations like it's animation is ready deleted*/
         lv_anim_t a_tmp;
-        memcpy(&a_tmp, a, sizeof(lv_anim_t));
+        lv_memcpy(&a_tmp, a, sizeof(lv_anim_t));
         lv_ll_remove(&LV_GC_ROOT(_lv_anim_ll), a);
         lv_mem_free(a);
         /*Flag that the list has changed */

src/lv_misc/lv_area.h

@@ -17,6 +17,7 @@ extern "C" {
 #include <string.h>
 #include <stdbool.h>
 #include <stdint.h>
+#include "lv_mem.h"
 
 /*********************
  *      DEFINES
@@ -98,7 +99,7 @@ void lv_area_set(lv_area_t * area_p, lv_coord_t x1, lv_coord_t y1, lv_coord_t x2
  */
 inline static void lv_area_copy(lv_area_t * dest, const lv_area_t * src)
 {
-    memcpy(dest, src, sizeof(lv_area_t));
+    lv_memcpy_small(dest, src, sizeof(lv_area_t));
 }
 
 /**

src/lv_misc/lv_bidi.c

@@ -311,7 +311,7 @@ void lv_bidi_process_paragraph(const char * str_in, char * str_out, uint32_t len
     if(rd) {
         if(base_dir == LV_BIDI_DIR_LTR) {
             if(str_out) {
-                memcpy(&str_out[wr], str_in, rd);
+                lv_memcpy(&str_out[wr], str_in, rd);
                 wr += rd;
             }
             if(pos_conv_out) {
@@ -334,7 +334,7 @@ void lv_bidi_process_paragraph(const char * str_in, char * str_out, uint32_t len
 
         if(base_dir == LV_BIDI_DIR_LTR) {
             if(run_dir == LV_BIDI_DIR_LTR) {
-                if(str_out) memcpy(&str_out[wr], &str_in[rd], run_len);
+                if(str_out) lv_memcpy(&str_out[wr], &str_in[rd], run_len);
                 if(pos_conv_out) fill_pos_conv(&pos_conv_out[pos_conv_wr], pos_conv_run_len, pos_conv_rd);
             }
             else rtl_reverse(str_out ? &str_out[wr] : NULL, &str_in[rd], run_len, pos_conv_out ? &pos_conv_out[pos_conv_wr] : NULL,
@@ -346,7 +346,7 @@ void lv_bidi_process_paragraph(const char * str_in, char * str_out, uint32_t len
             wr -= run_len;
             pos_conv_wr -= pos_conv_run_len;
             if(run_dir == LV_BIDI_DIR_LTR) {
-                if(str_out) memcpy(&str_out[wr], &str_in[rd], run_len);
+                if(str_out) lv_memcpy(&str_out[wr], &str_in[rd], run_len);
                 if(pos_conv_out) fill_pos_conv(&pos_conv_out[pos_conv_wr], pos_conv_run_len, pos_conv_rd);
             }
             else rtl_reverse(str_out ? &str_out[wr] : NULL, &str_in[rd], run_len, pos_conv_out ? &pos_conv_out[pos_conv_wr] : NULL,
@@ -523,7 +523,7 @@ static void rtl_reverse(char * dest, const char * src, uint32_t len, uint16_t *
                 pos_conv_first_weak = 0;
             }
 
-            if(dest) memcpy(&dest[wr], &src[first_weak], last_weak - first_weak + 1);
+            if(dest) lv_memcpy(&dest[wr], &src[first_weak], last_weak - first_weak + 1);
             if(pos_conv_out) fill_pos_conv(&pos_conv_out[pos_conv_wr], pos_conv_last_weak - pos_conv_first_weak + 1,
                                                pos_conv_rd_base + pos_conv_first_weak);
             wr += last_weak - first_weak + 1;
@@ -543,7 +543,7 @@ static void rtl_reverse(char * dest, const char * src, uint32_t len, uint16_t *
             }
             /*Just store the letter*/
             else {
-                if(dest) memcpy(&dest[wr], &src[i], letter_size);
+                if(dest) lv_memcpy(&dest[wr], &src[i], letter_size);
                 if(pos_conv_out) pos_conv_out[pos_conv_wr] = SET_RTL_POS(pos_conv_rd_base + pos_conv_i, true);
                 wr += letter_size;
                 pos_conv_wr++;

src/lv_misc/lv_fs.c

@@ -491,7 +491,7 @@ void lv_fs_drv_register(lv_fs_drv_t * drv_p)
     LV_ASSERT_MEM(new_drv);
     if(new_drv == NULL) return;
 
-    memcpy(new_drv, drv_p, sizeof(lv_fs_drv_t));
+    lv_memcpy(new_drv, drv_p, sizeof(lv_fs_drv_t));
 }
 
 /**

src/lv_misc/lv_ll.c

@@ -299,7 +299,7 @@ void * lv_ll_get_next(const lv_ll_t * ll_p, const void * n_act)
 
     if(ll_p != NULL) {
         const lv_ll_node_t * n_act_d = n_act;
-        memcpy(&next, n_act_d + LL_NEXT_P_OFFSET(ll_p), sizeof(void *));
+        lv_memcpy_small(&next, n_act_d + LL_NEXT_P_OFFSET(ll_p), sizeof(void *));
     }
 
     return next;
@@ -317,7 +317,7 @@ void * lv_ll_get_prev(const lv_ll_t * ll_p, const void * n_act)
 
     if(ll_p != NULL) {
         const lv_ll_node_t * n_act_d = n_act;
-        memcpy(&prev, n_act_d + LL_PREV_P_OFFSET(ll_p), sizeof(void *));
+        lv_memcpy_small(&prev, n_act_d + LL_PREV_P_OFFSET(ll_p), sizeof(void *));
     }
 
     return prev;
@@ -404,9 +404,9 @@ static void node_set_prev(lv_ll_t * ll_p, lv_ll_node_t * act, lv_ll_node_t * pre
 
     uint32_t node_p_size = sizeof(lv_ll_node_t *);
     if(prev)
-        memcpy(act + LL_PREV_P_OFFSET(ll_p), &prev, node_p_size);
+        lv_memcpy_small(act + LL_PREV_P_OFFSET(ll_p), &prev, node_p_size);
     else
-        memset(act + LL_PREV_P_OFFSET(ll_p), 0, node_p_size);
+        lv_memset_00(act + LL_PREV_P_OFFSET(ll_p), node_p_size);
 }
 
 /**
@@ -421,7 +421,7 @@ static void node_set_next(lv_ll_t * ll_p, lv_ll_node_t * act, lv_ll_node_t * nex
 
     uint32_t node_p_size = sizeof(lv_ll_node_t *);
     if(next)
-        memcpy(act + LL_NEXT_P_OFFSET(ll_p), &next, node_p_size);
+        lv_memcpy_small(act + LL_NEXT_P_OFFSET(ll_p), &next, node_p_size);
     else
-        memset(act + LL_NEXT_P_OFFSET(ll_p), 0, node_p_size);
+        lv_memset_00(act + LL_NEXT_P_OFFSET(ll_p), node_p_size);
 }

src/lv_misc/lv_mem.c

@@ -312,7 +312,7 @@ void * lv_mem_realloc(void * data_p, size_t new_size)
     if(data_p != NULL) {
         /*Copy the old data to the new. Use the smaller size*/
         if(old_size != 0) {
-            memcpy(new_p, data_p, LV_MATH_MIN(new_size, old_size));
+            lv_memcpy(new_p, data_p, LV_MATH_MIN(new_size, old_size));
             lv_mem_free(data_p);
         }
     }
@@ -530,7 +530,6 @@ void lv_mem_buf_free_all(void)
 
 /**
  * Same as `memcpy` but optimized for 4 byte operation.
- * `dst` and `src` should be word aligned else normal `memcpy` will be used
  * @param dst pointer to the destination buffer
  * @param src pointer to the source buffer
  * @param len number of byte to copy

src/lv_misc/lv_mem.h

@@ -135,13 +135,31 @@ void lv_mem_buf_free_all(void);
 
 /**
  * Same as `memcpy` but optimized for 4 byte operation.
- * `dst` and `src` should be word aligned else normal `memcpy` will be used
  * @param dst pointer to the destination buffer
  * @param src pointer to the source buffer
  * @param len number of byte to copy
  */
 void * lv_memcpy(void * dst, const void * src, size_t len);
 
+/**
+ * Same as `memcpy` but optimized to copy only a few bytes.
+ * @param dst pointer to the destination buffer
+ * @param src pointer to the source buffer
+ * @param len number of byte to copy
+ */
+static inline void * lv_memcpy_small(void * dst, const void * src, size_t len)
+{
+    uint8_t * d8 = dst;
+    const uint8_t * s8 = src;
+
+    while(len) {
+        *d8 = *s8; d8++; s8++;
+        len--;
+    }
+
+    return dst;
+}
+
 /**
  * Same as `memset` but optimized for 4 byte operation.
  * `dst` should be word aligned else normal `memcpy` will be used

src/lv_misc/lv_txt.c

@@ -445,7 +445,7 @@ void lv_txt_ins(char * txt_buf, uint32_t pos, const char * ins_txt)
     }
 
     /* Copy the text into the new space*/
-    memcpy(txt_buf + pos, ins_txt, ins_len);
+    lv_memcpy_small(txt_buf + pos, ins_txt, ins_len);
 }
 
 /**
@@ -537,7 +537,7 @@ static uint32_t lv_txt_utf8_conv_wc(uint32_t c)
     if((c & 0x80) != 0) {
         uint32_t swapped;
         uint8_t c8[4];
-        memcpy(c8, &c, 4);
+        lv_memcpy_small(c8, &c, 4);
         swapped = (c8[0] << 24) + (c8[1] << 16) + (c8[2] << 8) + (c8[3]);
         uint8_t i;
         for(i = 0; i < 4; i++) {

src/lv_widgets/lv_btnmatrix.c

@@ -275,7 +275,7 @@ void lv_btnmatrix_set_ctrl_map(lv_obj_t * btnm, const lv_btnmatrix_ctrl_t ctrl_m
     LV_ASSERT_OBJ(btnm, LV_OBJX_NAME);
 
     lv_btnmatrix_ext_t * ext = lv_obj_get_ext_attr(btnm);
-    memcpy(ext->ctrl_bits, ctrl_map, sizeof(lv_btnmatrix_ctrl_t) * ext->btn_cnt);
+    lv_memcpy(ext->ctrl_bits, ctrl_map, sizeof(lv_btnmatrix_ctrl_t) * ext->btn_cnt);
 
     lv_btnmatrix_set_map(btnm, ext->map_p);
 }
@@ -497,7 +497,7 @@ uint16_t lv_btnmatrix_get_focused_btn(const lv_obj_t * btnm)
     LV_ASSERT_OBJ(btnm, LV_OBJX_NAME);
 
     lv_btnmatrix_ext_t * ext = lv_obj_get_ext_attr(btnm);
-    return ext->btn_id_pr;
+    return ext->btn_id_focused;
 }
 
 /**

src/lv_widgets/lv_canvas.c

@@ -253,7 +253,7 @@ void lv_canvas_copy_buf(lv_obj_t * canvas, const void * to_copy, lv_coord_t x, l
     uint8_t * to_copy8 = (uint8_t *)to_copy;
     lv_coord_t i;
     for(i = 0; i < h; i++) {
-        memcpy((void *)&ext->dsc.data[px], to_copy8, w * px_size);
+        lv_memcpy((void *)&ext->dsc.data[px], to_copy8, w * px_size);
         px += ext->dsc.header.w * px_size;
         to_copy8 += w * px_size;
     }
@@ -425,7 +425,7 @@ void lv_canvas_blur_hor(lv_obj_t * canvas, const lv_area_t * area, uint16_t r)
 
         lv_color_t c;
         lv_opa_t opa = LV_OPA_TRANSP;
-        memcpy(line_buf, &ext->dsc.data[y * line_w], line_w);
+        lv_memcpy(line_buf, &ext->dsc.data[y * line_w], line_w);
 
 
         for(x = a.x1 - r_back; x <= a.x1 + r_front; x++) {

src/lv_widgets/lv_chart.c

@@ -147,9 +147,9 @@ lv_obj_t * lv_chart_create(lv_obj_t * par, const lv_obj_t * copy)
         ext->hdiv_cnt   = ext_copy->hdiv_cnt;
         ext->vdiv_cnt   = ext_copy->vdiv_cnt;
         ext->point_cnt  = ext_copy->point_cnt;
-        memcpy(&ext->x_axis, &ext_copy->x_axis, sizeof(lv_chart_axis_cfg_t));
+        lv_memcpy(&ext->x_axis, &ext_copy->x_axis, sizeof(lv_chart_axis_cfg_t));
-        memcpy(&ext->y_axis, &ext_copy->y_axis, sizeof(lv_chart_axis_cfg_t));
+        lv_memcpy(&ext->y_axis, &ext_copy->y_axis, sizeof(lv_chart_axis_cfg_t));
-        memcpy(&ext->secondary_y_axis, &ext_copy->secondary_y_axis, sizeof(lv_chart_axis_cfg_t));
+        lv_memcpy(&ext->secondary_y_axis, &ext_copy->secondary_y_axis, sizeof(lv_chart_axis_cfg_t));
 
         /*Refresh the style with new signal function*/
         lv_obj_refresh_style(chart, LV_STYLE_PROP_ALL);

src/lv_widgets/lv_imgbtn.c

@@ -93,10 +93,10 @@ lv_obj_t * lv_imgbtn_create(lv_obj_t * par, const lv_obj_t * copy)
     /*Copy an existing image button*/
     else {
         lv_imgbtn_ext_t * copy_ext = lv_obj_get_ext_attr(copy);
-        memcpy((void *)ext->img_src_mid, copy_ext->img_src_mid, sizeof(ext->img_src_mid));
+        lv_memcpy((void *)ext->img_src_mid, copy_ext->img_src_mid, sizeof(ext->img_src_mid));
 #if LV_IMGBTN_TILED
-        memcpy((void *)ext->img_src_left, copy_ext->img_src_left, sizeof(ext->img_src_left));
+        lv_memcpy((void *)ext->img_src_left, copy_ext->img_src_left, sizeof(ext->img_src_left));
-        memcpy((void *)ext->img_src_right, copy_ext->img_src_right, sizeof(ext->img_src_right));
+        lv_memcpy((void *)ext->img_src_right, copy_ext->img_src_right, sizeof(ext->img_src_right));
 #endif
         ext->tiled = copy_ext->tiled;
         /*Refresh the style with new signal function*/

src/lv_widgets/lv_label.c

@@ -147,7 +147,7 @@ lv_obj_t * lv_label_create(lv_obj_t * par, const lv_obj_t * copy)
             ext->text = lv_mem_realloc(ext->text, lv_mem_get_size(copy_ext->text));
             LV_ASSERT_MEM(ext->text);
             if(ext->text == NULL) return NULL;
-            memcpy(ext->text, copy_ext->text, lv_mem_get_size(copy_ext->text));
+            lv_memcpy(ext->text, copy_ext->text, lv_mem_get_size(copy_ext->text));
         }
 
         if(copy_ext->dot_tmp_alloc && copy_ext->dot.tmp_ptr) {
@@ -155,7 +155,7 @@ lv_obj_t * lv_label_create(lv_obj_t * par, const lv_obj_t * copy)
             lv_label_set_dot_tmp(new_label, ext->dot.tmp_ptr, len);
         }
         else {
-            memcpy(ext->dot.tmp, copy_ext->dot.tmp, sizeof(ext->dot.tmp));
+            lv_memcpy(ext->dot.tmp, copy_ext->dot.tmp, sizeof(ext->dot.tmp));
         }
         ext->dot_tmp_alloc = copy_ext->dot_tmp_alloc;
         ext->dot_end       = copy_ext->dot_end;
@@ -1450,14 +1450,14 @@ static bool lv_label_set_dot_tmp(lv_obj_t * label, char * data, uint16_t len)
             LV_LOG_ERROR("Failed to allocate memory for dot_tmp_ptr");
             return false;
         }
-        memcpy(ext->dot.tmp_ptr, data, len);
+        lv_memcpy(ext->dot.tmp_ptr, data, len);
         ext->dot.tmp_ptr[len] = '\0';
         ext->dot_tmp_alloc    = true;
     }
     else {
         /* Characters can be directly stored in object */
         ext->dot_tmp_alloc = false;
-        memcpy(ext->dot.tmp, data, len);
+        lv_memcpy(ext->dot.tmp, data, len);
     }
     return true;
 }

src/lv_widgets/lv_msgbox.c

@@ -319,10 +319,14 @@ uint16_t lv_msgbox_get_active_btn(lv_obj_t * mbox)
     LV_ASSERT_OBJ(mbox, LV_OBJX_NAME);
 
     lv_msgbox_ext_t * ext = lv_obj_get_ext_attr(mbox);
-    if(ext->btnm)
+    if(ext->btnm == NULL) return LV_BTNMATRIX_BTN_NONE;
-        return lv_btnmatrix_get_active_btn(ext->btnm);
+
-    else
+    uint16_t id = lv_btnmatrix_get_active_btn(ext->btnm);
-        return LV_BTNMATRIX_BTN_NONE;
+    if(id == LV_BTNMATRIX_BTN_NONE) {
+        id = lv_btnmatrix_get_focused_btn(ext->btnm);
+    }
+
+    return id;
 }
 
 /**
@@ -449,7 +453,7 @@ static lv_res_t lv_msgbox_signal(lv_obj_t * mbox, lv_signal_t sign, void * param
     }
     else if(sign == LV_SIGNAL_RELEASED) {
         if(ext->btnm) {
-            uint32_t btn_id = lv_btnmatrix_get_active_btn(ext->btnm);
+            uint32_t btn_id = lv_btnmatrix_get_focused_btn(ext->btnm);
             if(btn_id != LV_BTNMATRIX_BTN_NONE) lv_event_send(mbox, LV_EVENT_VALUE_CHANGED, &btn_id);
         }
     }

src/lv_widgets/lv_objmask.c

@@ -121,7 +121,7 @@ lv_objmask_mask_t * lv_objmask_add_mask(lv_obj_t * objmask, void * param)
     LV_ASSERT_MEM(m->param);
     if(m->param == NULL) return NULL;
 
-    memcpy(m->param, param, param_size);
+    lv_memcpy(m->param, param, param_size);
 
     lv_obj_invalidate(objmask);
 

src/lv_widgets/lv_roller.c

@@ -479,8 +479,10 @@ static lv_res_t lv_roller_signal(lv_obj_t * roller, lv_signal_t sign, void * par
     }
 
     /* Include the ancient signal function */
-    res = ancestor_signal(roller, sign, param);
+    if(sign != LV_SIGNAL_CONTROL) { /*Don't let the page to scroll on keys*/
-    if(res != LV_RES_OK) return res;
+        res = ancestor_signal(roller, sign, param);
+        if(res != LV_RES_OK) return res;
+    }
 
     if(sign == LV_SIGNAL_GET_TYPE) return lv_obj_handle_get_type_signal(param, LV_OBJX_NAME);
 

src/lv_widgets/lv_textarea.c

@@ -181,7 +181,7 @@ lv_obj_t * lv_textarea_create(lv_obj_t * par, const lv_obj_t * copy)
             LV_ASSERT_MEM(ext->pwd_tmp);
             if(ext->pwd_tmp == NULL) return NULL;
 
-            memcpy(ext->pwd_tmp, copy_ext->pwd_tmp, len);
+            lv_memcpy(ext->pwd_tmp, copy_ext->pwd_tmp, len);
         }
 
         if(copy_ext->one_line) lv_textarea_set_one_line(ta, true);
@@ -1351,7 +1351,7 @@ static lv_design_res_t lv_textarea_scrollable_design(lv_obj_t * scrl, const lv_a
         lv_draw_rect(&cur_area, clip_area, &cur_dsc);
 
         char letter_buf[8] = {0};
-        memcpy(letter_buf, &txt[ext->cursor.txt_byte_pos], lv_txt_encoded_size(&txt[ext->cursor.txt_byte_pos]));
+        lv_memcpy(letter_buf, &txt[ext->cursor.txt_byte_pos], lv_txt_encoded_size(&txt[ext->cursor.txt_byte_pos]));
 
         if(cur_dsc.bg_opa == LV_OPA_COVER) {
             lv_style_int_t left = lv_obj_get_style_pad_left(ta, LV_TEXTAREA_PART_CURSOR);
@@ -1637,7 +1637,7 @@ static void pwd_char_hider(lv_obj_t * ta)
         char * txt_tmp = lv_mem_buf_get(enc_len * bullet_len + 1);
         uint16_t i;
         for(i = 0; i < enc_len; i++) {
-            memcpy(&txt_tmp[i * bullet_len], bullet, bullet_len);
+            lv_memcpy(&txt_tmp[i * bullet_len], bullet, bullet_len);
         }
 
         txt_tmp[i * bullet_len] = '\0';