231 lines
7.9 KiB
C
231 lines
7.9 KiB
C
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/* Deshab File Manager — 全屏文件管理器
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* 文件列表视图，鼠标点击选择，键盘导航。
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* FAT32 根目录遍历，Esc 退出。
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*/
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#include "../../firstInit/ascii_bitmaps.c"
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#include "../desktop_app.h"
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#define CHAR_STEP 12
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#define CHAR_H 18
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#define MAX_FILES 256
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static da_app_context g_ac;
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static da_cursor g_cursor;
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static da_mouse g_mouse;
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typedef struct {
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char name[13]; /* 8.3 */
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int is_dir;
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u32 size;
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} file_entry;
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static file_entry files[MAX_FILES];
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static int file_count = 0;
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static int selected = 0;
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static int scroll_off = 0;
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static void load_root_dir(void) {
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file_count = 0;
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if (!g_ac.block_read) return;
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u8 bpb[512];
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if (g_ac.block_read(0, 0, 1, bpb) != 0) return;
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if (bpb[510] != 0x55 || bpb[511] != 0xAA) return;
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u32 root_cluster = *(u32 *)(bpb + 44);
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u8 sectors_per_cluster = bpb[13];
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u32 fat_start = *(u16 *)(bpb + 14);
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u32 data_start = fat_start + (*(u16 *)(bpb + 22)) * 2;
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u8 dir_buf[8192];
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u32 lba = data_start + (root_cluster - 2) * sectors_per_cluster;
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if (g_ac.block_read(0, lba, sectors_per_cluster, dir_buf) != 0) return;
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for (int i = 0; i < (int)(sectors_per_cluster * 512) && file_count < MAX_FILES; i += 32) {
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u8 first = dir_buf[i];
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if (first == 0x00) break;
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if (first == 0xE5) continue;
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if (dir_buf[i+11] & 0x08) continue;
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if (dir_buf[i+11] & 0x10) continue; /* 暂跳过目录 */
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file_entry *f = &files[file_count];
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f->is_dir = (dir_buf[i+11] & 0x10) ? 1 : 0;
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f->size = *(u32 *)(dir_buf + i + 28);
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int p = 0;
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for (int j = 0; j < 8 && dir_buf[i+j] != ' '; j++)
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f->name[p++] = (char)dir_buf[i+j];
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if (dir_buf[i+8] != ' ') {
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f->name[p++] = '.';
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for (int j = 8; j < 11 && dir_buf[i+j] != ' '; j++)
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f->name[p++] = (char)dir_buf[i+j];
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}
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f->name[p] = 0;
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file_count++;
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}
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}
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static void redraw_all(void) {
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da_fill_bg(&g_ac, DA_BG_PRIMARY);
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da_draw_titlebar(&g_ac, "Files", (i64)g_ac.fb_w);
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int margin = 12;
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int top_y = DA_TITLEBAR_H + 4;
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int row_h = CHAR_H + 6;
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int visible_rows = ((int)g_ac.fb_h - top_y - DA_STATUSBAR_H - 8) / row_h;
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int col_name_x = margin + 32;
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int col_size_x = (int)g_ac.fb_w - 120;
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int col_type_x = (int)g_ac.fb_w - 60;
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/* 列标题 */
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da_draw_string(&g_ac, "Name", col_name_x, top_y, DA_TEXT_DIM, DA_BG_PRIMARY, CHAR_STEP);
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da_draw_string(&g_ac, "Size", col_size_x, top_y, DA_TEXT_DIM, DA_BG_PRIMARY, CHAR_STEP);
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da_draw_string(&g_ac, "Type", col_type_x, top_y, DA_TEXT_DIM, DA_BG_PRIMARY, CHAR_STEP);
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da_fill_rect(&g_ac, margin, top_y + CHAR_H, (i64)g_ac.fb_w - margin * 2, 1, DA_BORDER);
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/* 文件列表 */
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if (scroll_off < 0) scroll_off = 0;
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if (scroll_off > file_count - visible_rows && file_count > visible_rows) scroll_off = file_count - visible_rows;
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if (scroll_off < 0) scroll_off = 0;
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for (int i = 0; i < visible_rows; i++) {
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int idx = scroll_off + i;
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if (idx >= file_count) break;
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int y = top_y + CHAR_H + 6 + i * row_h;
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/* 选中高亮 */
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if (idx == selected) {
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da_fill_rect(&g_ac, margin, y - 2, (i64)g_ac.fb_w - margin * 2, row_h, DA_BG_TERTIARY);
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da_rect_outline(&g_ac, margin, y - 2, (i64)g_ac.fb_w - margin * 2, row_h, DA_ACCENT, 4);
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}
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/* 图标 */
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u32 icon_color = files[idx].is_dir ? DA_WARNING : DA_ACCENT;
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da_fill_rounded_rect(&g_ac, margin + 4, y, 24, 16, icon_color, 3);
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/* 文件名 */
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u32 name_color = (idx == selected) ? DA_ACCENT_LIGHT : DA_TEXT_PRIMARY;
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da_draw_string(&g_ac, files[idx].name, col_name_x, y, name_color,
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(idx == selected) ? DA_BG_TERTIARY : DA_BG_PRIMARY, CHAR_STEP);
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/* 大小 */
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if (!files[idx].is_dir) {
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char sz[16]; int p = 0;
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u32 s = files[idx].size;
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if (s == 0) { sz[p++] = '0'; }
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else { char tmp[12]; int tl = 0; while(s>0){tmp[tl++]='0'+(s%10);s/=10;} for(int j=tl-1;j>=0;j--)sz[p++]=tmp[j]; }
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sz[p++] = ' '; sz[p++] = 'B'; sz[p] = 0;
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da_draw_string(&g_ac, sz, col_size_x, y, DA_TEXT_DIM,
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(idx == selected) ? DA_BG_TERTIARY : DA_BG_PRIMARY, CHAR_STEP);
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} else {
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da_draw_string(&g_ac, "--", col_size_x, y, DA_TEXT_DIM,
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(idx == selected) ? DA_BG_TERTIARY : DA_BG_PRIMARY, CHAR_STEP);
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}
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/* 类型 */
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const char *type = files[idx].is_dir ? "DIR" : "FILE";
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da_draw_string(&g_ac, type, col_type_x, y, DA_TEXT_DIM,
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(idx == selected) ? DA_BG_TERTIARY : DA_BG_PRIMARY, CHAR_STEP);
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}
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if (file_count == 0) {
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da_draw_string(&g_ac, "No files found (empty or no block device)",
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margin + 20, top_y + 60, DA_TEXT_DIM, DA_BG_PRIMARY, CHAR_STEP);
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}
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/* 状态栏 */
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char status[64]; int p = 0;
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const char *p1 = "/ "; while (*p1) status[p++] = *p1++;
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status[p++] = '0' + file_count / 10; status[p++] = '0' + file_count % 10;
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const char *p2 = " items"; while (*p2) status[p++] = *p2++;
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status[p] = 0;
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da_draw_statusbar(&g_ac, status, (i64)g_ac.fb_w, (i64)g_ac.fb_h);
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/* 鼠标光标 */
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da_cursor_save(&g_ac, &g_cursor);
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da_cursor_draw(&g_ac, &g_cursor, DA_CURSOR_COLOR);
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}
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__attribute__((visibility("default")))
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void dsk_entry(const da_boot_context *ctx) {
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__asm__ volatile("cli");
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da_slog("fileman", "boot");
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if (!ctx || ctx->magic != DA_BOOT_MAGIC) {
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da_slog("fileman", "bad context");
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for(;;) __asm__("hlt");
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}
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da_init(&g_ac, ctx);
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da_cursor_init(&g_cursor, (i64)g_ac.fb_w, (i64)g_ac.fb_h);
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da_mouse_init();
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load_root_dir();
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redraw_all();
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int e0 = 0, shift = 0; (void)shift;
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for (;;) {
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int need_redraw = 0;
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/* 鼠标轮询 */
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if (da_mouse_poll(&g_mouse, &g_cursor, (i64)g_ac.fb_w, (i64)g_ac.fb_h)) {
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need_redraw = 1;
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if (g_cursor.btn) {
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/* 点击选择文件 */
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int margin = 12;
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int top_y = DA_TITLEBAR_H + 4;
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int row_h = CHAR_H + 6;
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int click_y = g_cursor.my - top_y - CHAR_H - 6;
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if (click_y >= 0) {
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int idx = click_y / row_h + scroll_off;
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if (idx >= 0 && idx < file_count) {
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selected = idx;
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need_redraw = 1;
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}
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}
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}
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}
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/* 键盘轮询 */
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u8 st = inb(0x64);
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if ((st & 1) && !(st & 0x20)) {
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u8 data = inb(0x60);
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u8 sc = data;
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if (sc == 0xE0) { e0 = 1; goto skip; }
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if (sc == 0x2A || sc == 0x36) { shift = 1; goto skip; }
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if (sc == 0xAA || sc == 0xB6) { shift = 0; goto skip; }
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if (sc & 0x80) { e0 = 0; goto skip; }
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if (sc == 0x01) { da_slog("fileman", "exit"); return; }
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if (e0) {
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if (sc == 0x48) { /* Up */
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if (selected > 0) selected--;
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need_redraw = 1;
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} else if (sc == 0x50) { /* Down */
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if (selected < file_count - 1) selected++;
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need_redraw = 1;
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}
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e0 = 0;
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goto skip;
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}
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if (sc == 0x1C) { /* Enter - 打开 */
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if (selected >= 0 && selected < file_count) {
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da_slog("fileman", "open file (stub)");
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}
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need_redraw = 1;
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} else if (sc == 0x0E) { /* Backspace - 返回上级 */
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da_slog("fileman", "back (root only)");
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need_redraw = 1;
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}
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}
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skip:
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if (need_redraw) {
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da_cursor_restore(&g_ac, &g_cursor);
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redraw_all();
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}
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__asm__("pause");
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}
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}
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