mirror of
https://github.com/libretro/RetroArch.git
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431 lines
10 KiB
C
431 lines
10 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2011-2015 - Daniel De Matteis
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* Copyright (C) 2014-2015 - Jean-André Santoni
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "../driver.h"
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#include "menu_common_list.h"
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#include "menu_list.h"
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#include "menu_navigation.h"
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#include "menu_entries.h"
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#include <string.h>
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/**
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* Before a refresh, we could have deleted a
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* file on disk, causing selection_ptr to
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* suddendly be out of range.
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*
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* Ensure it doesn't overflow.
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**/
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static void menu_entries_refresh(menu_handle_t *menu, file_list_t *list)
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{
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if (!list)
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return;
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if (menu->selection_ptr >= menu_list_get_size(menu->menu_list)
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&& menu_list_get_size(menu->menu_list))
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menu_navigation_set(menu, menu_list_get_size(menu->menu_list) - 1, true);
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else if (!menu_list_get_size(menu->menu_list))
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menu_navigation_clear(menu, true);
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}
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/**
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* menu_entries_list_elem_is_dir:
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* @list : File list handle.
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* @offset : Offset index of element.
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*
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* Is the current entry at offset @offset a directory?
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*
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* Returns: true (1) if entry is a directory, otherwise false (0).
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**/
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static inline bool menu_entries_list_elem_is_dir(file_list_t *list,
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unsigned offset)
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{
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const char *path = NULL;
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const char *label = NULL;
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unsigned type = 0;
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menu_list_get_at_offset(list, offset, &path, &label, &type);
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return type != MENU_FILE_PLAIN;
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}
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/**
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* menu_entries_list_get_first_char:
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* @list : File list handle.
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* @offset : Offset index of element.
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*
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* Gets the first character of an element in the
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* file list.
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*
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* Returns: first character of element in file list.
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**/
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static inline int menu_entries_list_get_first_char(
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file_list_t *list, unsigned offset)
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{
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int ret;
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const char *path = NULL;
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menu_list_get_alt_at_offset(list, offset, &path);
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ret = tolower(*path);
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/* "Normalize" non-alphabetical entries so they
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* are lumped together for purposes of jumping. */
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if (ret < 'a')
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ret = 'a' - 1;
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else if (ret > 'z')
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ret = 'z' + 1;
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return ret;
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}
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static void menu_entries_build_scroll_indices(file_list_t *list)
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{
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size_t i;
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int current;
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bool current_is_dir;
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if (!driver.menu || !list)
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return;
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driver.menu->scroll_indices_size = 0;
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if (!list->size)
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return;
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driver.menu->scroll_indices[driver.menu->scroll_indices_size++] = 0;
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current = menu_entries_list_get_first_char(list, 0);
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current_is_dir = menu_entries_list_elem_is_dir(list, 0);
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for (i = 1; i < list->size; i++)
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{
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int first = menu_entries_list_get_first_char(list, i);
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bool is_dir = menu_entries_list_elem_is_dir(list, i);
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if ((current_is_dir && !is_dir) || (first > current))
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driver.menu->scroll_indices[driver.menu->scroll_indices_size++] = i;
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current = first;
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current_is_dir = is_dir;
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}
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driver.menu->scroll_indices[driver.menu->scroll_indices_size++] =
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list->size - 1;
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}
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void menu_list_destroy(file_list_t *list)
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{
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unsigned i;
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if (!list)
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return;
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if (!driver.menu_ctx)
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goto end;
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for (i = 0; i < list->size; i++)
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{
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if (driver.menu_ctx->list_delete)
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driver.menu_ctx->list_delete(list, i, list->size);
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menu_common_list_delete(list, i, list->size);
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}
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end:
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file_list_free(list);
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}
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void menu_list_free(menu_list_t *menu_list)
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{
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if (!menu_list)
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return;
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menu_list_destroy(menu_list->menu_stack);
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menu_list_destroy(menu_list->selection_buf);
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}
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void *menu_list_new(void)
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{
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menu_list_t *list = (menu_list_t*)calloc(1, sizeof(*list));
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if (!list)
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return NULL;
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list->menu_stack = (file_list_t*)calloc(1, sizeof(file_list_t));
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list->selection_buf = (file_list_t*)calloc(1, sizeof(file_list_t));
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if (!list->menu_stack || !list->selection_buf)
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{
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free(list);
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return NULL;
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}
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return list;
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}
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size_t menu_list_get_stack_size(menu_list_t *list)
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{
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if (!list)
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return 0;
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return file_list_get_size(list->menu_stack);
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}
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void menu_list_get_at_offset(const file_list_t *list, size_t idx,
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const char **path, const char **label, unsigned *file_type)
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{
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file_list_get_at_offset(list, idx, path, label, file_type);
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}
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size_t menu_list_get_size(menu_list_t *list)
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{
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if (!list)
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return 0;
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return file_list_get_size(list->selection_buf);
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}
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void menu_list_get_last(const file_list_t *list,
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const char **path, const char **label,
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unsigned *file_type)
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{
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if (list)
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file_list_get_last(list, path, label, file_type);
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}
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void menu_list_get_last_stack(const menu_list_t *list,
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const char **path, const char **label,
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unsigned *file_type)
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{
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if (list)
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file_list_get_last(list->menu_stack, path, label, file_type);
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}
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void *menu_list_get_actiondata_at_offset(const file_list_t *list, size_t idx)
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{
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if (!list)
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return NULL;
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return file_list_get_actiondata_at_offset(list, idx);
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}
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void *menu_list_get_last_stack_actiondata(const menu_list_t *list)
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{
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if (!list)
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return NULL;
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return file_list_get_last_actiondata(list->menu_stack);
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}
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void menu_list_flush_stack(menu_list_t *list,
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unsigned final_type)
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{
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const char *path = NULL;
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const char *label = NULL;
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unsigned type = 0;
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if (!driver.menu || !list)
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return;
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driver.menu->need_refresh = true;
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file_list_get_last(list->menu_stack, &path, &label, &type);
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while (type != final_type)
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{
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menu_list_pop(list->menu_stack, &driver.menu->selection_ptr);
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file_list_get_last(list->menu_stack, &path, &label, &type);
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}
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}
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void menu_list_flush_stack_by_needle(menu_list_t *list,
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const char *needle)
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{
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const char *path = NULL;
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const char *label = NULL;
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unsigned type = 0;
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if (!driver.menu || !list)
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return;
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driver.menu->need_refresh = true;
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file_list_get_last(list->menu_stack, &path, &label, &type);
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while (strcmp(needle, label) != 0)
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{
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menu_list_pop(list->menu_stack, &driver.menu->selection_ptr);
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file_list_get_last(list->menu_stack, &path, &label, &type);
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}
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}
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void menu_list_pop_stack(menu_list_t *list)
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{
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if (!list)
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return;
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if (file_list_get_size(list->menu_stack) <= 1)
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return;
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if (driver.menu_ctx->list_cache)
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driver.menu_ctx->list_cache(false, 0);
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menu_list_pop(list->menu_stack, &driver.menu->selection_ptr);
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driver.menu->need_refresh = true;
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}
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void menu_list_pop_stack_by_needle(menu_list_t *list,
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const char *needle)
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{
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const char *path = NULL;
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const char *label = NULL;
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unsigned type = 0;
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if (!driver.menu || !list)
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return;
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driver.menu->need_refresh = true;
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file_list_get_last(list->menu_stack, &path, &label, &type);
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while (strcmp(needle, label) == 0)
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{
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menu_list_pop(list->menu_stack, &driver.menu->selection_ptr);
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file_list_get_last(list->menu_stack, &path, &label, &type);
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}
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}
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void menu_list_pop(file_list_t *list, size_t *directory_ptr)
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{
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if (!driver.menu_ctx)
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goto end;
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if (list->size != 0)
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{
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size_t list_size = list->size - 1;
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if (driver.menu_ctx->list_delete)
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driver.menu_ctx->list_delete(list, list_size, list_size);
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menu_common_list_delete(list, list_size, list_size);
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}
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end:
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file_list_pop(list, directory_ptr);
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if (!driver.menu_ctx)
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return;
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if (driver.menu_ctx->list_set_selection)
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driver.menu_ctx->list_set_selection(list);
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menu_common_list_set_selection(list);
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}
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void menu_list_clear(file_list_t *list)
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{
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if (!driver.menu_ctx)
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goto end;
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if (driver.menu_ctx->list_clear)
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driver.menu_ctx->list_clear(list);
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end:
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menu_common_list_clear(list);
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}
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void menu_list_push(file_list_t *list,
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const char *path, const char *label,
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unsigned type, size_t directory_ptr)
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{
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if (!list)
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return;
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if (!label)
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return;
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file_list_push(list, path, label, type, directory_ptr);
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if (!driver.menu_ctx)
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return;
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if (driver.menu_ctx->list_insert)
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driver.menu_ctx->list_insert(list, path, label, list->size - 1);
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menu_common_list_insert(list, path, label, type, list->size - 1);
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}
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void menu_list_push_refresh(file_list_t *list,
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const char *path, const char *label,
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unsigned type, size_t directory_ptr)
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{
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if (!list)
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return;
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menu_list_push(list, path, label, type, directory_ptr);
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menu_navigation_clear(driver.menu, true);
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driver.menu->need_refresh = true;
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}
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void menu_list_push_stack(menu_list_t *list,
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const char *path, const char *label,
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unsigned type, size_t directory_ptr)
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{
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if (list)
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menu_list_push(list->menu_stack, path, label, type, directory_ptr);
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}
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int menu_list_push_stack_refresh(menu_list_t *list,
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const char *path, const char *label,
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unsigned type, size_t directory_ptr)
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{
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if (!list)
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return -1;
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if (driver.menu_ctx->list_cache)
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driver.menu_ctx->list_cache(false, 0);
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menu_list_push_stack(list, path, label, type, directory_ptr);
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menu_navigation_clear(driver.menu, true);
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driver.menu->need_refresh = true;
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return 0;
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}
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void menu_list_set_alt_at_offset(file_list_t *list, size_t idx,
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const char *alt)
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{
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file_list_set_alt_at_offset(list, idx, alt);
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}
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void menu_list_get_alt_at_offset(const file_list_t *list, size_t idx,
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const char **alt)
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{
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file_list_get_alt_at_offset(list, idx, alt);
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}
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void menu_list_sort_on_alt(file_list_t *list)
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{
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file_list_sort_on_alt(list);
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}
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int menu_list_populate_generic(void *data,
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file_list_t *list, const char *path,
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const char *label, unsigned type)
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{
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menu_handle_t *menu = (menu_handle_t*)data;
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if (!menu)
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return -1;
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driver.menu->scroll_indices_size = 0;
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menu_entries_build_scroll_indices(list);
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menu_entries_refresh(menu, list);
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if (driver.menu_ctx && driver.menu_ctx->populate_entries)
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driver.menu_ctx->populate_entries(menu, path, label, type);
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return 0;
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}
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