1
2 #include "../../lv_examples.h"
3
4 #if LV_USE_TABLE && LV_USE_FILE_EXPLORER && (LV_USE_FS_STDIO || LV_USE_FS_POSIX || LV_USE_FS_WIN32 || LV_USE_FS_FATFS) && LV_BUILD_EXAMPLES
5
6 #include <stdlib.h>
7 #include <string.h>
8
exch_table_item(lv_obj_t * tb,int16_t i,int16_t j)9 static void exch_table_item(lv_obj_t * tb, int16_t i, int16_t j)
10 {
11 const char * tmp;
12 tmp = lv_table_get_cell_value(tb, i, 0);
13 lv_table_set_cell_value(tb, 0, 2, tmp);
14 lv_table_set_cell_value(tb, i, 0, lv_table_get_cell_value(tb, j, 0));
15 lv_table_set_cell_value(tb, j, 0, lv_table_get_cell_value(tb, 0, 2));
16
17 tmp = lv_table_get_cell_value(tb, i, 1);
18 lv_table_set_cell_value(tb, 0, 2, tmp);
19 lv_table_set_cell_value(tb, i, 1, lv_table_get_cell_value(tb, j, 1));
20 lv_table_set_cell_value(tb, j, 1, lv_table_get_cell_value(tb, 0, 2));
21 }
22
23 /*Quick sort 3 way*/
sort_by_file_kind(lv_obj_t * tb,int16_t lo,int16_t hi)24 static void sort_by_file_kind(lv_obj_t * tb, int16_t lo, int16_t hi)
25 {
26 if(lo >= hi) return;
27
28 int16_t lt = lo;
29 int16_t i = lo + 1;
30 int16_t gt = hi;
31 const char * v = lv_table_get_cell_value(tb, lo, 1);
32 while(i <= gt) {
33 if(strcmp(lv_table_get_cell_value(tb, i, 1), v) < 0)
34 exch_table_item(tb, lt++, i++);
35 else if(strcmp(lv_table_get_cell_value(tb, i, 1), v) > 0)
36 exch_table_item(tb, i, gt--);
37 else
38 i++;
39 }
40
41 sort_by_file_kind(tb, lo, lt - 1);
42 sort_by_file_kind(tb, gt + 1, hi);
43 }
44
file_explorer_event_handler(lv_event_t * e)45 static void file_explorer_event_handler(lv_event_t * e)
46 {
47 lv_event_code_t code = lv_event_get_code(e);
48 lv_obj_t * obj = lv_event_get_target(e);
49
50 if(code == LV_EVENT_VALUE_CHANGED) {
51 const char * cur_path = lv_file_explorer_get_current_path(obj);
52 const char * sel_fn = lv_file_explorer_get_selected_file_name(obj);
53
54 LV_LOG_USER("%s%s", cur_path, sel_fn);
55 }
56 else if(code == LV_EVENT_READY) {
57 lv_obj_t * tb = lv_file_explorer_get_file_table(obj);
58 uint16_t sum = lv_table_get_row_count(tb);
59
60 sort_by_file_kind(tb, 0, (sum - 1));
61 }
62 }
63
lv_example_file_explorer_3(void)64 void lv_example_file_explorer_3(void)
65 {
66 lv_obj_t * file_explorer = lv_file_explorer_create(lv_screen_active());
67 /*Before custom sort, please set the default sorting to NONE. The default is NONE.*/
68 lv_file_explorer_set_sort(file_explorer, LV_EXPLORER_SORT_NONE);
69
70 #if LV_USE_FS_WIN32
71 /* Note to Windows users: the initial "C:" on these paths corresponds to
72 * the value of `LV_FS_WIN32_LETTER` in `lv_conf.h`, and should not be
73 * confused with the Windows/DOS drive letter. It is an identifier that
74 * is used to enable LVGL to look up the appropriate driver from a list of
75 * registered file-system drivers. `lv_fs_win32_init()` happens to use the
76 * identifier letter 'C' so "C:" is the driver-identifier-prefix used here.
77 * The "C:" following that is indeed the Windows/DOS drive letter and is
78 * part of the actual path that gets passed to the OS-level functions.
79 *
80 * See https://docs.lvgl.io/master/details/main-components/fs.html for details.
81 * File Explorer uses `lv_fs` internally, thus the required prefix in path strings.
82 */
83 lv_file_explorer_open_dir(file_explorer, "C:C:/");
84 #if LV_FILE_EXPLORER_QUICK_ACCESS
85 lv_file_explorer_set_quick_access_path(file_explorer, LV_EXPLORER_HOME_DIR, "C:C:/Users/Public/Desktop");
86 lv_file_explorer_set_quick_access_path(file_explorer, LV_EXPLORER_VIDEO_DIR, "C:C:/Users/Public/Videos");
87 lv_file_explorer_set_quick_access_path(file_explorer, LV_EXPLORER_PICTURES_DIR, "C:C:/Users/Public/Pictures");
88 lv_file_explorer_set_quick_access_path(file_explorer, LV_EXPLORER_MUSIC_DIR, "C:C:/Users/Public/Music");
89 lv_file_explorer_set_quick_access_path(file_explorer, LV_EXPLORER_DOCS_DIR, "C:C:/Users/Public/Documents");
90 lv_file_explorer_set_quick_access_path(file_explorer, LV_EXPLORER_FS_DIR, "C:C:/");
91 #endif
92
93 #else
94 /* linux */
95 lv_file_explorer_open_dir(file_explorer, "A:/");
96 #if LV_FILE_EXPLORER_QUICK_ACCESS
97 char * envvar = "HOME";
98 char home_dir[LV_FS_MAX_PATH_LENGTH];
99 strcpy(home_dir, "A:");
100 /* get the user's home directory from the HOME environment variable*/
101 strcat(home_dir, getenv(envvar));
102 LV_LOG_USER("home_dir: %s\n", home_dir);
103 lv_file_explorer_set_quick_access_path(file_explorer, LV_EXPLORER_HOME_DIR, home_dir);
104 char video_dir[LV_FS_MAX_PATH_LENGTH];
105 strcpy(video_dir, home_dir);
106 strcat(video_dir, "/Videos");
107 lv_file_explorer_set_quick_access_path(file_explorer, LV_EXPLORER_VIDEO_DIR, video_dir);
108 char picture_dir[LV_FS_MAX_PATH_LENGTH];
109 strcpy(picture_dir, home_dir);
110 strcat(picture_dir, "/Pictures");
111 lv_file_explorer_set_quick_access_path(file_explorer, LV_EXPLORER_PICTURES_DIR, picture_dir);
112 char music_dir[LV_FS_MAX_PATH_LENGTH];
113 strcpy(music_dir, home_dir);
114 strcat(music_dir, "/Music");
115 lv_file_explorer_set_quick_access_path(file_explorer, LV_EXPLORER_MUSIC_DIR, music_dir);
116 char document_dir[LV_FS_MAX_PATH_LENGTH];
117 strcpy(document_dir, home_dir);
118 strcat(document_dir, "/Documents");
119 lv_file_explorer_set_quick_access_path(file_explorer, LV_EXPLORER_DOCS_DIR, document_dir);
120
121 lv_file_explorer_set_quick_access_path(file_explorer, LV_EXPLORER_FS_DIR, "A:/");
122 #endif
123 #endif
124
125 lv_obj_add_event_cb(file_explorer, file_explorer_event_handler, LV_EVENT_ALL, NULL);
126 }
127
128 #endif
129
