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menu: Center menu vertically

This commit is contained in:
mintsuki 2023-07-29 03:52:57 -05:00
parent 551d5163fb
commit e1d25f8c66
1 changed files with 15 additions and 8 deletions
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23
common/menu.c
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@ -496,7 +496,7 @@ refresh:
static size_t print_tree(size_t offset, size_t window, const char *shift, size_t level, size_t base_index, size_t selected_entry, static size_t print_tree(size_t offset, size_t window, const char *shift, size_t level, size_t base_index, size_t selected_entry,
struct menu_entry *current_entry, struct menu_entry *current_entry,
struct menu_entry **selected_menu_entry, struct menu_entry **selected_menu_entry,
size_t *max_len) { size_t *max_len, size_t *max_height) {
size_t max_entries = 0; size_t max_entries = 0;
bool no_print = false; bool no_print = false;
@ -504,8 +504,13 @@ static size_t print_tree(size_t offset, size_t window, const char *shift, size_t
if (max_len == NULL) { if (max_len == NULL) {
max_len = &dummy_max_len; max_len = &dummy_max_len;
} }
size_t dummy_max_height = 0;
if (max_height == NULL) {
max_height = &dummy_max_height;
}
if (!level) { if (!level) {
*max_len = 0; *max_len = 0;
*max_height = 0;
} }
if (shift == NULL) { if (shift == NULL) {
no_print = true; no_print = true;
@ -554,6 +559,7 @@ static size_t print_tree(size_t offset, size_t window, const char *shift, size_t
if (!no_print) print("\e[7m"); if (!no_print) print("\e[7m");
} }
if (!no_print) print(" %s \e[27m\n", current_entry->name); if (!no_print) print(" %s \e[27m\n", current_entry->name);
(*max_height)++;
cur_len += 1 + strlen(current_entry->name) + 1; cur_len += 1 + strlen(current_entry->name) + 1;
skip_line: skip_line:
if (current_entry->sub && current_entry->expanded) { if (current_entry->sub && current_entry->expanded) {
@ -561,7 +567,7 @@ skip_line:
selected_entry, selected_entry,
current_entry->sub, current_entry->sub,
selected_menu_entry, selected_menu_entry,
max_len); max_len, max_height);
} }
max_entries++; max_entries++;
current_entry = current_entry->next; current_entry = current_entry->next;
@ -723,7 +729,7 @@ noreturn void _menu(bool first_run) {
if (!skip_timeout && !timeout) { if (!skip_timeout && !timeout) {
// Use print tree to load up selected_menu_entry and determine if the // Use print tree to load up selected_menu_entry and determine if the
// default entry is valid. // default entry is valid.
print_tree(0, 0, NULL, 0, 0, selected_entry, menu_tree, &selected_menu_entry, NULL); print_tree(0, 0, NULL, 0, 0, selected_entry, menu_tree, &selected_menu_entry, NULL, NULL);
if (selected_menu_entry == NULL || selected_menu_entry->sub != NULL) { if (selected_menu_entry == NULL || selected_menu_entry->sub != NULL) {
quiet = false; quiet = false;
print("Default entry is not valid or directory, booting to menu.\n"); print("Default entry is not valid or directory, booting to menu.\n");
@ -756,7 +762,6 @@ refresh:
terms[0]->get_cursor_pos(terms[0], &x, &y); terms[0]->get_cursor_pos(terms[0], &x, &y);
set_cursor_pos_helper(terms[0]->cols / 2 - DIV_ROUNDUP(strlen(menu_branding), 2), y); set_cursor_pos_helper(terms[0]->cols / 2 - DIV_ROUNDUP(strlen(menu_branding), 2), y);
print("\e[3%sm%s\e[37m", menu_branding_colour, menu_branding); print("\e[3%sm%s\e[37m", menu_branding_colour, menu_branding);
print("\n\n\n\n");
} }
while (menu_tree == NULL) { while (menu_tree == NULL) {
@ -776,16 +781,18 @@ refresh:
console(); console();
} }
size_t max_tree_len; size_t max_tree_len, max_tree_height;
print_tree(tree_offset, terms[0]->rows - 10, NULL, 0, 0, selected_entry, menu_tree, print_tree(tree_offset, terms[0]->rows - 10, NULL, 0, 0, selected_entry, menu_tree,
&selected_menu_entry, &max_tree_len); &selected_menu_entry, &max_tree_len, &max_tree_height);
size_t tree_prefix_len = (terms[0]->cols / 2 - DIV_ROUNDUP(max_tree_len, 2)) - 2; size_t tree_prefix_len = (terms[0]->cols / 2 - DIV_ROUNDUP(max_tree_len, 2)) - 2;
char *tree_prefix = ext_mem_alloc(tree_prefix_len + 1); char *tree_prefix = ext_mem_alloc(tree_prefix_len + 1);
memset(tree_prefix, ' ', tree_prefix_len); memset(tree_prefix, ' ', tree_prefix_len);
set_cursor_pos_helper(0, terms[0]->rows / 2 - DIV_ROUNDUP(max_tree_height, 2));
size_t max_entries = print_tree(tree_offset, terms[0]->rows - 10, tree_prefix, 0, 0, selected_entry, menu_tree, size_t max_entries = print_tree(tree_offset, terms[0]->rows - 10, tree_prefix, 0, 0, selected_entry, menu_tree,
&selected_menu_entry, NULL); &selected_menu_entry, NULL, NULL);
pmm_free(tree_prefix, tree_prefix_len); pmm_free(tree_prefix, tree_prefix_len);
@ -857,7 +864,7 @@ timeout_aborted:
if (ent < (int)max_entries) { if (ent < (int)max_entries) {
selected_entry = ent; selected_entry = ent;
print_tree(0, 0, NULL, 0, 0, selected_entry, menu_tree, print_tree(0, 0, NULL, 0, 0, selected_entry, menu_tree,
&selected_menu_entry, NULL); &selected_menu_entry, NULL, NULL);
goto autoboot; goto autoboot;
} }
goto refresh; goto refresh;