diff options
Diffstat (limited to 'src/libs/lvgl/src/lv_widgets/lv_cont.c')
| -rw-r--r-- | src/libs/lvgl/src/lv_widgets/lv_cont.c | 817 |
1 files changed, 817 insertions, 0 deletions
diff --git a/src/libs/lvgl/src/lv_widgets/lv_cont.c b/src/libs/lvgl/src/lv_widgets/lv_cont.c new file mode 100644 index 0000000..679576a --- /dev/null +++ b/src/libs/lvgl/src/lv_widgets/lv_cont.c @@ -0,0 +1,817 @@ +/** + * @file lv_cont.c + * + */ + +/********************* + * INCLUDES + *********************/ + +#include "lv_cont.h" +#if LV_USE_CONT != 0 + +#include <stdbool.h> +#include <stdint.h> +#include <string.h> + +#include "../lv_misc/lv_debug.h" +#include "../lv_draw/lv_draw.h" +#include "../lv_draw/lv_draw_mask.h" +#include "../lv_themes/lv_theme.h" +#include "../lv_misc/lv_area.h" +#include "../lv_misc/lv_color.h" +#include "../lv_misc/lv_math.h" + +/********************* + * DEFINES + *********************/ +#define LV_OBJX_NAME "lv_cont" + +#ifndef LV_LAYOUT_MAX_RECURSION + #define LV_LAYOUT_MAX_RECURSION 10 +#endif + +/********************** + * TYPEDEFS + **********************/ + +/********************** + * STATIC PROTOTYPES + **********************/ +static lv_res_t lv_cont_signal(lv_obj_t * cont, lv_signal_t sign, void * param); +static lv_style_list_t * lv_cont_get_style(lv_obj_t * cont, uint8_t type); +static void lv_cont_refr_layout(lv_obj_t * cont); +static void lv_cont_layout_col(lv_obj_t * cont); +static void lv_cont_layout_row(lv_obj_t * cont); +static void lv_cont_layout_center(lv_obj_t * cont); +static void lv_cont_layout_pretty(lv_obj_t * cont); +static void lv_cont_layout_grid(lv_obj_t * cont); +static void lv_cont_refr_autofit(lv_obj_t * cont); + +/********************** + * STATIC VARIABLES + **********************/ +static lv_design_cb_t ancestor_design; +static lv_signal_cb_t ancestor_signal; + +/********************** + * MACROS + **********************/ + +/********************** + * GLOBAL FUNCTIONS + **********************/ + +/** + * Create a container objects + * @param par pointer to an object, it will be the parent of the new container + * @param copy pointer to a container object, if not NULL then the new object will be copied from it + * @return pointer to the created container + */ +lv_obj_t * lv_cont_create(lv_obj_t * par, const lv_obj_t * copy) +{ + + LV_LOG_TRACE("container create started"); + + /*Create a basic object*/ + lv_obj_t * cont = lv_obj_create(par, copy); + LV_ASSERT_MEM(cont); + if(cont == NULL) return NULL; + + if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_cb(cont); + if(ancestor_design == NULL) ancestor_design = lv_obj_get_design_cb(cont); + + lv_obj_allocate_ext_attr(cont, sizeof(lv_cont_ext_t)); + lv_cont_ext_t * ext = lv_obj_get_ext_attr(cont); + if(ext == NULL) { + lv_obj_del(cont); + return NULL; + } + + LV_ASSERT_MEM(ext); + ext->fit_left = LV_FIT_NONE; + ext->fit_right = LV_FIT_NONE; + ext->fit_top = LV_FIT_NONE; + ext->fit_bottom = LV_FIT_NONE; + ext->layout = LV_LAYOUT_OFF; + + lv_obj_set_signal_cb(cont, lv_cont_signal); + + /*Init the new container*/ + if(copy == NULL) { + /*Set the default styles if it's not screen*/ + if(par != NULL) { + lv_theme_apply(cont, LV_THEME_CONT); + } + + } + /*Copy an existing object*/ + else { + lv_cont_ext_t * copy_ext = lv_obj_get_ext_attr(copy); + ext->fit_left = copy_ext->fit_left; + ext->fit_right = copy_ext->fit_right; + ext->fit_top = copy_ext->fit_top; + ext->fit_bottom = copy_ext->fit_bottom; + ext->layout = copy_ext->layout; + + /*Refresh the style with new signal function*/ + lv_obj_refresh_style(cont, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL); + } + + LV_LOG_INFO("container created"); + + return cont; +} + +/*===================== + * Setter functions + *====================*/ + +/** + * Set a layout on a container + * @param cont pointer to a container object + * @param layout a layout from 'lv_cont_layout_t' + */ +void lv_cont_set_layout(lv_obj_t * cont, lv_layout_t layout) +{ + LV_ASSERT_OBJ(cont, LV_OBJX_NAME); + + lv_cont_ext_t * ext = lv_obj_get_ext_attr(cont); + if(ext->layout == layout) return; + + ext->layout = layout; + + /*Send a signal to refresh the layout*/ + cont->signal_cb(cont, LV_SIGNAL_CHILD_CHG, NULL); +} + +/** + * Set the fit policy in all 4 directions separately. + * It tell how to change the container's size automatically. + * @param cont pointer to a container object + * @param left left fit policy from `lv_fit_t` + * @param right right fit policy from `lv_fit_t` + * @param top bottom fit policy from `lv_fit_t` + * @param bottom bottom fit policy from `lv_fit_t` + */ +void lv_cont_set_fit4(lv_obj_t * cont, lv_fit_t left, lv_fit_t right, lv_fit_t top, lv_fit_t bottom) +{ + LV_ASSERT_OBJ(cont, LV_OBJX_NAME); + + lv_obj_invalidate(cont); + lv_cont_ext_t * ext = lv_obj_get_ext_attr(cont); + if(ext->fit_left == left && ext->fit_right == right && ext->fit_top == top && ext->fit_bottom == bottom) { + return; + } + + ext->fit_left = left; + ext->fit_right = right; + ext->fit_top = top; + ext->fit_bottom = bottom; + + /*Send a signal to refresh the layout*/ + cont->signal_cb(cont, LV_SIGNAL_CHILD_CHG, NULL); +} + +/*===================== + * Getter functions + *====================*/ + +/** + * Get the layout of a container + * @param cont pointer to container object + * @return the layout from 'lv_cont_layout_t' + */ +lv_layout_t lv_cont_get_layout(const lv_obj_t * cont) +{ + LV_ASSERT_OBJ(cont, LV_OBJX_NAME); + + lv_cont_ext_t * ext = lv_obj_get_ext_attr(cont); + return ext->layout; +} + +/** + * Get left fit mode of a container + * @param cont pointer to a container object + * @return an element of `lv_fit_t` + */ +lv_fit_t lv_cont_get_fit_left(const lv_obj_t * cont) +{ + LV_ASSERT_OBJ(cont, LV_OBJX_NAME); + + lv_cont_ext_t * ext = lv_obj_get_ext_attr(cont); + return ext->fit_left; +} + +/** + * Get right fit mode of a container + * @param cont pointer to a container object + * @return an element of `lv_fit_t` + */ +lv_fit_t lv_cont_get_fit_right(const lv_obj_t * cont) +{ + LV_ASSERT_OBJ(cont, LV_OBJX_NAME); + + lv_cont_ext_t * ext = lv_obj_get_ext_attr(cont); + return ext->fit_right; +} + +/** + * Get top fit mode of a container + * @param cont pointer to a container object + * @return an element of `lv_fit_t` + */ +lv_fit_t lv_cont_get_fit_top(const lv_obj_t * cont) +{ + LV_ASSERT_OBJ(cont, LV_OBJX_NAME); + + lv_cont_ext_t * ext = lv_obj_get_ext_attr(cont); + return ext->fit_top; +} + +/** + * Get bottom fit mode of a container + * @param cont pointer to a container object + * @return an element of `lv_fit_t` + */ +lv_fit_t lv_cont_get_fit_bottom(const lv_obj_t * cont) +{ + LV_ASSERT_OBJ(cont, LV_OBJX_NAME); + + lv_cont_ext_t * ext = lv_obj_get_ext_attr(cont); + return ext->fit_bottom; +} + +/********************** + * STATIC FUNCTIONS + **********************/ + +/** + * Signal function of the container + * @param cont pointer to a container object + * @param sign a signal type from lv_signal_t enum + * @param param pointer to a signal specific variable + * @return LV_RES_OK: the object is not deleted in the function; LV_RES_INV: the object is deleted + */ +static lv_res_t lv_cont_signal(lv_obj_t * cont, lv_signal_t sign, void * param) +{ + if(sign == LV_SIGNAL_GET_STYLE) { + lv_get_style_info_t * info = param; + info->result = lv_cont_get_style(cont, info->part); + if(info->result != NULL) return LV_RES_OK; + else return ancestor_signal(cont, sign, param); + } + + lv_res_t res; + + /* Include the ancient signal function */ + res = ancestor_signal(cont, 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); + + if(sign == LV_SIGNAL_STYLE_CHG) { /*Recalculate the padding if the style changed*/ + lv_cont_refr_layout(cont); + lv_cont_refr_autofit(cont); + } + else if(sign == LV_SIGNAL_CHILD_CHG) { + lv_cont_refr_layout(cont); + lv_cont_refr_autofit(cont); + } + else if(sign == LV_SIGNAL_COORD_CHG) { + if(lv_obj_get_width(cont) != lv_area_get_width(param) || lv_obj_get_height(cont) != lv_area_get_height(param)) { + lv_cont_refr_layout(cont); + lv_cont_refr_autofit(cont); + } + } + else if(sign == LV_SIGNAL_PARENT_SIZE_CHG) { + /*MAX and EDGE fit needs to be refreshed if the parent's size has changed*/ + lv_cont_refr_autofit(cont); + } + + return res; +} + +static lv_style_list_t * lv_cont_get_style(lv_obj_t * cont, uint8_t type) +{ + lv_style_list_t * style_dsc_p; + switch(type) { + case LV_CONT_PART_MAIN: + style_dsc_p = &cont->style_list; + break; + default: + style_dsc_p = NULL; + } + + return style_dsc_p; +} + +/** + * Refresh the layout of a container + * @param cont pointer to an object which layout should be refreshed + */ +static void lv_cont_refr_layout(lv_obj_t * cont) +{ + if(lv_obj_is_protected(cont, LV_PROTECT_CHILD_CHG)) return; + lv_layout_t type = lv_cont_get_layout(cont); + + /*'cont' has to be at least 1 child*/ + if(lv_obj_get_child(cont, NULL) == NULL) return; + + if(type == LV_LAYOUT_OFF) return; + + if(type == LV_LAYOUT_CENTER) { + lv_cont_layout_center(cont); + } + else if(type == LV_LAYOUT_COLUMN_LEFT || type == LV_LAYOUT_COLUMN_MID || type == LV_LAYOUT_COLUMN_RIGHT) { + lv_cont_layout_col(cont); + } + else if(type == LV_LAYOUT_ROW_TOP || type == LV_LAYOUT_ROW_MID || type == LV_LAYOUT_ROW_BOTTOM) { + lv_cont_layout_row(cont); + } + else if(type == LV_LAYOUT_PRETTY_MID || type == LV_LAYOUT_PRETTY_TOP || type == LV_LAYOUT_PRETTY_BOTTOM) { + lv_cont_layout_pretty(cont); + } + else if(type == LV_LAYOUT_GRID) { + lv_cont_layout_grid(cont); + } +} + +/** + * Handle column type layouts + * @param cont pointer to an object which layout should be handled + */ +static void lv_cont_layout_col(lv_obj_t * cont) +{ + lv_coord_t left = lv_obj_get_style_pad_left(cont, LV_CONT_PART_MAIN); + lv_coord_t right = lv_obj_get_style_pad_right(cont, LV_CONT_PART_MAIN); + lv_coord_t top = lv_obj_get_style_pad_top(cont, LV_CONT_PART_MAIN); + lv_coord_t inner = lv_obj_get_style_pad_inner(cont, LV_CONT_PART_MAIN); + + lv_layout_t type = lv_cont_get_layout(cont); + lv_obj_t * child; + + /*Adjust margin and get the alignment type*/ + lv_align_t align; + lv_coord_t hpad_corr; + + switch(type) { + case LV_LAYOUT_COLUMN_LEFT: + hpad_corr = left; + align = LV_ALIGN_IN_TOP_LEFT; + break; + case LV_LAYOUT_COLUMN_MID: + hpad_corr = 0; + align = LV_ALIGN_IN_TOP_MID; + break; + case LV_LAYOUT_COLUMN_RIGHT: + hpad_corr = -right; + align = LV_ALIGN_IN_TOP_RIGHT; + break; + default: + hpad_corr = 0; + align = LV_ALIGN_IN_TOP_LEFT; + break; + } + + /* Disable child change action because the children will be moved a lot + * an unnecessary child change signals could be sent*/ + lv_obj_add_protect(cont, LV_PROTECT_CHILD_CHG); + /* Align the children */ + lv_coord_t last_cord = top; + _LV_LL_READ_BACK(cont->child_ll, child) { + if(lv_obj_get_hidden(child) != false || lv_obj_is_protected(child, LV_PROTECT_POS) != false) continue; + lv_style_int_t mtop = lv_obj_get_style_margin_top(child, LV_OBJ_PART_MAIN); + lv_style_int_t mbottom = lv_obj_get_style_margin_bottom(child, LV_OBJ_PART_MAIN); + lv_style_int_t mleft = lv_obj_get_style_margin_left(child, LV_OBJ_PART_MAIN); + lv_obj_align(child, cont, align, hpad_corr + mleft, last_cord + mtop); + last_cord += lv_obj_get_height(child) + inner + mtop + mbottom; + } + + lv_obj_clear_protect(cont, LV_PROTECT_CHILD_CHG); +} + +/** + * Handle row type layouts + * @param cont pointer to an object which layout should be handled + */ +static void lv_cont_layout_row(lv_obj_t * cont) +{ + + lv_layout_t type = lv_cont_get_layout(cont); + lv_obj_t * child; + + /*Adjust margin and get the alignment type*/ + lv_align_t align; + lv_coord_t vpad_corr; + lv_bidi_dir_t base_dir = lv_obj_get_base_dir(cont); + switch(type) { + case LV_LAYOUT_ROW_TOP: + vpad_corr = lv_obj_get_style_pad_top(cont, LV_CONT_PART_MAIN); + align = base_dir == LV_BIDI_DIR_RTL ? LV_ALIGN_IN_TOP_RIGHT : LV_ALIGN_IN_TOP_LEFT; + break; + case LV_LAYOUT_ROW_MID: + vpad_corr = 0; + align = base_dir == LV_BIDI_DIR_RTL ? LV_ALIGN_IN_RIGHT_MID : LV_ALIGN_IN_LEFT_MID; + break; + case LV_LAYOUT_ROW_BOTTOM: + vpad_corr = -lv_obj_get_style_pad_bottom(cont, LV_CONT_PART_MAIN); + align = base_dir == LV_BIDI_DIR_RTL ? LV_ALIGN_IN_BOTTOM_RIGHT : LV_ALIGN_IN_BOTTOM_LEFT; + break; + default: + vpad_corr = 0; + align = base_dir == LV_BIDI_DIR_RTL ? LV_ALIGN_IN_TOP_RIGHT : LV_ALIGN_IN_TOP_LEFT; + break; + } + + /* Disable child change action because the children will be moved a lot + * an unnecessary child change signals could be sent*/ + lv_obj_add_protect(cont, LV_PROTECT_CHILD_CHG); + + /* Align the children */ + lv_coord_t last_cord; + if(base_dir == LV_BIDI_DIR_RTL) last_cord = lv_obj_get_style_pad_right(cont, LV_CONT_PART_MAIN); + else last_cord = lv_obj_get_style_pad_left(cont, LV_CONT_PART_MAIN); + + lv_coord_t inner = lv_obj_get_style_pad_inner(cont, LV_CONT_PART_MAIN); + + _LV_LL_READ_BACK(cont->child_ll, child) { + if(lv_obj_get_hidden(child) != false || lv_obj_is_protected(child, LV_PROTECT_POS) != false) continue; + + if(base_dir == LV_BIDI_DIR_RTL) lv_obj_align(child, cont, align, -last_cord, vpad_corr); + else lv_obj_align(child, cont, align, last_cord, vpad_corr); + + last_cord += lv_obj_get_width(child) + inner; + } + + lv_obj_clear_protect(cont, LV_PROTECT_CHILD_CHG); +} + +/** + * Handle the center layout + * @param cont pointer to an object which layout should be handled + */ +static void lv_cont_layout_center(lv_obj_t * cont) +{ + lv_obj_t * child; + uint32_t obj_num = 0; + lv_coord_t h_tot = 0; + + lv_coord_t inner = lv_obj_get_style_pad_inner(cont, LV_CONT_PART_MAIN); + _LV_LL_READ(cont->child_ll, child) { + if(lv_obj_get_hidden(child) != false || lv_obj_is_protected(child, LV_PROTECT_POS) != false) continue; + h_tot += lv_obj_get_height(child) + inner; + obj_num++; + } + + if(obj_num == 0) return; + + h_tot -= inner; + + /* Disable child change action because the children will be moved a lot + * an unnecessary child change signals could be sent*/ + lv_obj_add_protect(cont, LV_PROTECT_CHILD_CHG); + + /* Align the children */ + lv_coord_t last_cord = -(h_tot / 2); + _LV_LL_READ_BACK(cont->child_ll, child) { + if(lv_obj_get_hidden(child) != false || lv_obj_is_protected(child, LV_PROTECT_POS) != false) continue; + + lv_obj_align(child, cont, LV_ALIGN_CENTER, 0, last_cord + lv_obj_get_height(child) / 2); + last_cord += lv_obj_get_height(child) + inner; + } + + lv_obj_clear_protect(cont, LV_PROTECT_CHILD_CHG); +} + +/** + * Handle the pretty layout. Put as many object as possible in row + * then begin a new row + * @param cont pointer to an object which layout should be handled + */ +static void lv_cont_layout_pretty(lv_obj_t * cont) +{ + lv_layout_t type = lv_cont_get_layout(cont); + + lv_obj_t * child_rs; /* Row starter child */ + lv_obj_t * child_rc; /* Row closer child */ + lv_obj_t * child_tmp; /* Temporary child */ + lv_coord_t w_obj = lv_obj_get_width(cont); + lv_coord_t act_y = lv_obj_get_style_pad_top(cont, LV_CONT_PART_MAIN); + /* Disable child change action because the children will be moved a lot + * an unnecessary child change signals could be sent*/ + + child_rs = _lv_ll_get_tail(&cont->child_ll); /*Set the row starter child*/ + if(child_rs == NULL) return; /*Return if no child*/ + + lv_obj_add_protect(cont, LV_PROTECT_CHILD_CHG); + lv_coord_t pleft = lv_obj_get_style_pad_left(cont, LV_CONT_PART_MAIN); + lv_coord_t pright = lv_obj_get_style_pad_right(cont, LV_CONT_PART_MAIN); + lv_coord_t pinner = lv_obj_get_style_pad_inner(cont, LV_CONT_PART_MAIN); + + child_rc = child_rs; /*Initially the row starter and closer is the same*/ + while(child_rs != NULL) { + lv_coord_t h_row = 0; + lv_coord_t w_row = pleft + pright; /*The width is at least the left+right pad*/ + uint32_t obj_num = 0; + + /*Find the row closer object and collect some data*/ + do { + if(lv_obj_get_hidden(child_rc) == false && lv_obj_is_protected(child_rc, LV_PROTECT_POS) == false) { + /*If this object is already not fit then break*/ + lv_coord_t w = lv_obj_get_width(child_rc); + w += lv_obj_get_style_margin_left(child_rc, LV_OBJ_PART_MAIN); + w += lv_obj_get_style_margin_right(child_rc, LV_OBJ_PART_MAIN); + if(w_row + w > w_obj) { + /*Step back one child because the last already not fit, so the previous is the + * closer*/ + if(child_rc != NULL && obj_num != 0) { + child_rc = _lv_ll_get_next(&cont->child_ll, child_rc); + } + break; + } + w_row += w + pinner; /*Add the object width + inner padding*/ + + lv_coord_t h = lv_obj_get_height(child_rc); + h += lv_obj_get_style_margin_top(child_rc, LV_OBJ_PART_MAIN); + h += lv_obj_get_style_margin_bottom(child_rc, LV_OBJ_PART_MAIN); + h_row = LV_MATH_MAX(h_row, h); /*Search the highest object*/ + obj_num++; + if(lv_obj_is_protected(child_rc, LV_PROTECT_FOLLOW)) + break; /*If can not be followed by an other object then break here*/ + } + child_rc = _lv_ll_get_prev(&cont->child_ll, child_rc); /*Load the next object*/ + if(obj_num == 0) + child_rs = child_rc; /*If the first object was hidden (or too long) then set the + next as first */ + } while(child_rc != NULL); + + /*If the object is too long then align it to the middle*/ + if(obj_num == 0) { + if(child_rc != NULL) { + lv_style_int_t mtop = lv_obj_get_style_margin_top(child_rc, LV_OBJ_PART_MAIN); + + lv_obj_align(child_rc, cont, LV_ALIGN_IN_TOP_MID, 0, act_y + mtop); + h_row = lv_obj_get_height(child_rc); /*Not set previously because of the early break*/ + h_row += mtop; + h_row += lv_obj_get_style_margin_bottom(child_rc, LV_OBJ_PART_MAIN); + } + } + /*If there is only one object in the row then align it to the middle*/ + else if(obj_num == 1) { + lv_obj_align(child_rs, cont, LV_ALIGN_IN_TOP_MID, + 0, + act_y + lv_obj_get_style_margin_top(child_rs, LV_OBJ_PART_MAIN)); + } + /* Align the children (from child_rs to child_rc)*/ + else { + w_row -= pinner * obj_num; + lv_coord_t new_pinner = (w_obj - w_row) / (obj_num - 1); + lv_coord_t act_x = pleft; /*x init*/ + child_tmp = child_rs; + lv_align_t align; + int32_t inv; + if(lv_obj_get_base_dir(cont) == LV_BIDI_DIR_RTL) { + align = LV_ALIGN_IN_TOP_RIGHT; + inv = -1; + } + else { + align = LV_ALIGN_IN_TOP_LEFT; + inv = 1; + } + while(child_tmp != NULL) { + if(lv_obj_get_hidden(child_tmp) == false && lv_obj_is_protected(child_tmp, LV_PROTECT_POS) == false) { + lv_coord_t mleft = lv_obj_get_style_margin_left(child_tmp, LV_OBJ_PART_MAIN); + lv_coord_t mright = lv_obj_get_style_margin_right(child_tmp, LV_OBJ_PART_MAIN); + switch(type) { + case LV_LAYOUT_PRETTY_TOP: + lv_obj_align(child_tmp, cont, align, + inv * (act_x + mleft), + act_y + lv_obj_get_style_margin_top(child_tmp, LV_OBJ_PART_MAIN)); + break; + case LV_LAYOUT_PRETTY_MID: + lv_obj_align(child_tmp, cont, align, + inv * (act_x + mleft), + act_y + (h_row - lv_obj_get_height(child_tmp)) / 2); + + break; + case LV_LAYOUT_PRETTY_BOTTOM: + lv_obj_align(child_tmp, cont, align, + inv * (act_x + mleft), + act_y + h_row - lv_obj_get_height(child_tmp) - lv_obj_get_style_margin_bottom(child_tmp, LV_OBJ_PART_MAIN)); + break; + default: + break; + } + + act_x += lv_obj_get_width(child_tmp) + new_pinner + mleft + mright; + } + if(child_tmp == child_rc) break; + child_tmp = _lv_ll_get_prev(&cont->child_ll, child_tmp); + } + } + + if(child_rc == NULL) break; + act_y += pinner + h_row; /*y increment*/ + child_rs = _lv_ll_get_prev(&cont->child_ll, child_rc); /*Go to the next object*/ + child_rc = child_rs; + } + lv_obj_clear_protect(cont, LV_PROTECT_CHILD_CHG); +} + +/** + * Handle the grid layout. Align same-sized objects in a grid + * @param cont pointer to an object which layout should be handled + */ +static void lv_cont_layout_grid(lv_obj_t * cont) +{ + lv_coord_t w_fit = lv_obj_get_width_fit(cont); + lv_coord_t inner = lv_obj_get_style_pad_inner(cont, LV_CONT_PART_MAIN); + lv_coord_t y_ofs = inner + lv_obj_get_height(lv_obj_get_child(cont, NULL)); + + /* Disable child change action because the children will be moved a lot + * an unnecessary child change signals could be sent*/ + lv_obj_add_protect(cont, LV_PROTECT_CHILD_CHG); + + /* Align the children */ + lv_coord_t left = lv_obj_get_style_pad_left(cont, LV_CONT_PART_MAIN); + lv_coord_t act_x = left; + lv_coord_t act_y = lv_obj_get_style_pad_top(cont, LV_CONT_PART_MAIN); + lv_obj_t * child; + _LV_LL_READ_BACK(cont->child_ll, child) { + if(lv_obj_get_hidden(child) != false || lv_obj_is_protected(child, LV_PROTECT_POS) != false) continue; + lv_coord_t obj_w = lv_obj_get_width(child); + if(act_x + obj_w > w_fit + left) { + act_x = left; + act_y += y_ofs; + } + + lv_obj_set_pos(child, act_x, act_y); + act_x += inner + obj_w; + } + + lv_obj_clear_protect(cont, LV_PROTECT_CHILD_CHG); +} + +/** + * Handle auto fit. Set the size of the object to involve all children. + * @param cont pointer to an object which size will be modified + */ +static void lv_cont_refr_autofit(lv_obj_t * cont) +{ + if(lv_obj_is_protected(cont, LV_PROTECT_CHILD_CHG)) return; + lv_cont_ext_t * ext = lv_obj_get_ext_attr(cont); + + if(ext->fit_left == LV_FIT_NONE && ext->fit_right == LV_FIT_NONE && ext->fit_top == LV_FIT_NONE && + ext->fit_bottom == LV_FIT_NONE) { + return; + } + + static int recursion_level = 0; + recursion_level++; + /*Ensure it won't keep recursing forever*/ + if(recursion_level <= LV_LAYOUT_MAX_RECURSION) { + lv_area_t tight_area; + lv_area_t ori; + lv_obj_t * child_i; + + lv_obj_t * par = lv_obj_get_parent(cont); + lv_area_t parent_area; + lv_area_copy(&parent_area, &par->coords); + parent_area.x1 += lv_obj_get_style_pad_left(par, LV_OBJ_PART_MAIN); + parent_area.x2 -= lv_obj_get_style_pad_right(par, LV_OBJ_PART_MAIN); + parent_area.y1 += lv_obj_get_style_pad_top(par, LV_OBJ_PART_MAIN); + parent_area.y2 -= lv_obj_get_style_pad_bottom(par, LV_OBJ_PART_MAIN); + + /*Search the side coordinates of the children*/ + lv_obj_get_coords(cont, &ori); + lv_obj_get_coords(cont, &tight_area); + + bool has_children = _lv_ll_is_empty(&cont->child_ll) ? false : true; + + if(has_children) { + tight_area.x1 = LV_COORD_MAX; + tight_area.y1 = LV_COORD_MAX; + tight_area.x2 = LV_COORD_MIN; + tight_area.y2 = LV_COORD_MIN; + + _LV_LL_READ(cont->child_ll, child_i) { + if(lv_obj_get_hidden(child_i) != false) continue; + + if(ext->fit_left != LV_FIT_PARENT) { + lv_style_int_t mleft = lv_obj_get_style_margin_left(child_i, LV_OBJ_PART_MAIN); + tight_area.x1 = LV_MATH_MIN(tight_area.x1, child_i->coords.x1 - mleft); + } + + if(ext->fit_right != LV_FIT_PARENT) { + lv_style_int_t mright = lv_obj_get_style_margin_right(child_i, LV_OBJ_PART_MAIN); + tight_area.x2 = LV_MATH_MAX(tight_area.x2, child_i->coords.x2 + mright); + } + + if(ext->fit_top != LV_FIT_PARENT) { + lv_style_int_t mtop = lv_obj_get_style_margin_top(child_i, LV_OBJ_PART_MAIN); + tight_area.y1 = LV_MATH_MIN(tight_area.y1, child_i->coords.y1 - mtop); + } + + if(ext->fit_bottom != LV_FIT_PARENT) { + lv_style_int_t mbottom = lv_obj_get_style_margin_bottom(child_i, LV_OBJ_PART_MAIN); + tight_area.y2 = LV_MATH_MAX(tight_area.y2, child_i->coords.y2 + mbottom); + } + } + + tight_area.x1 -= lv_obj_get_style_pad_left(cont, LV_CONT_PART_MAIN); + tight_area.x2 += lv_obj_get_style_pad_right(cont, LV_CONT_PART_MAIN); + tight_area.y1 -= lv_obj_get_style_pad_top(cont, LV_CONT_PART_MAIN); + tight_area.y2 += lv_obj_get_style_pad_bottom(cont, LV_CONT_PART_MAIN); + } + + lv_area_t new_area; + lv_area_copy(&new_area, &ori); + + switch(ext->fit_left) { + case LV_FIT_TIGHT: + new_area.x1 = tight_area.x1; + break; + case LV_FIT_PARENT: + new_area.x1 = parent_area.x1; + break; + case LV_FIT_MAX: + new_area.x1 = has_children ? LV_MATH_MIN(tight_area.x1, parent_area.x1) : parent_area.x1; + break; + default: + break; + } + + switch(ext->fit_right) { + case LV_FIT_TIGHT: + new_area.x2 = tight_area.x2; + break; + case LV_FIT_PARENT: + new_area.x2 = parent_area.x2; + break; + case LV_FIT_MAX: + new_area.x2 = has_children ? LV_MATH_MAX(tight_area.x2, parent_area.x2) : parent_area.x2; + break; + default: + break; + } + + switch(ext->fit_top) { + case LV_FIT_TIGHT: + new_area.y1 = tight_area.y1; + break; + case LV_FIT_PARENT: + new_area.y1 = parent_area.y1; + break; + case LV_FIT_MAX: + new_area.y1 = has_children ? LV_MATH_MIN(tight_area.y1, parent_area.y1) : parent_area.y1; + break; + default: + break; + } + + switch(ext->fit_bottom) { + case LV_FIT_TIGHT: + new_area.y2 = tight_area.y2; + break; + case LV_FIT_PARENT: + new_area.y2 = parent_area.y2; + break; + case LV_FIT_MAX: + new_area.y2 = has_children ? LV_MATH_MAX(tight_area.y2, parent_area.y2) : parent_area.y2; + break; + default: + break; + } + + /*Do nothing if the coordinates are not changed*/ + if(cont->coords.x1 != new_area.x1 || cont->coords.y1 != new_area.y1 || cont->coords.x2 != new_area.x2 || + cont->coords.y2 != new_area.y2) { + + lv_obj_invalidate(cont); + lv_area_copy(&cont->coords, &new_area); + lv_obj_invalidate(cont); + + /*Notify the object about its new coordinates*/ + cont->signal_cb(cont, LV_SIGNAL_COORD_CHG, &ori); + + /*Inform the parent about the new coordinates*/ + par->signal_cb(par, LV_SIGNAL_CHILD_CHG, cont); + + if(lv_obj_get_auto_realign(cont)) { + lv_obj_realign(cont); + } + + /*Tell the children the parent's size has changed*/ + _LV_LL_READ(cont->child_ll, child_i) { + child_i->signal_cb(child_i, LV_SIGNAL_PARENT_SIZE_CHG, &ori); + } + } + } + else { + LV_LOG_ERROR("LV_LAYOUT_MAX_RECURSION reached! You may have encountered issue #1539."); + } + + recursion_level--; +} + +#endif |