rockbox/apps/tree.c
Björn Stenberg 1fc4fee8cb Added directory sorting
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@822 a1c6a512-1295-4272-9138-f99709370657
2002-05-30 14:01:36 +00:00

332 lines
9.6 KiB
C

/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 Daniel Stenberg
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdbool.h>
#include "dir.h"
#include "file.h"
#include "lcd.h"
#include "button.h"
#include "kernel.h"
#include "tree.h"
#include "play.h"
#include "main_menu.h"
#include "sprintf.h"
#include "mpeg.h"
#ifdef HAVE_LCD_BITMAP
#include "icons.h"
#endif
#define MAX_FILES_IN_DIR 200
#define TREE_MAX_FILENAMELEN 128
#define MAX_DIR_LEVELS 10
struct entry {
bool file; /* true if file, false if dir */
char name[TREE_MAX_FILENAMELEN];
};
static struct entry dircache[MAX_FILES_IN_DIR];
static struct entry* dircacheptr[MAX_FILES_IN_DIR];
static int filesindir;
void browse_root(void)
{
dirbrowse("/");
}
#ifdef HAVE_LCD_BITMAP
#define TREE_MAX_ON_SCREEN 7
#define TREE_MAX_LEN_DISPLAY 16 /* max length that fits on screen */
#define MARGIN_Y 8 /* Y pixel margin */
#define MARGIN_X 12 /* X pixel margin */
#define LINE_Y 0 /* Y position the entry-list starts at */
#define LINE_X 2 /* X position the entry-list starts at */
#define LINE_HEIGTH 8 /* pixels for each text line */
extern unsigned char bitmap_icons_6x8[LastIcon][6];
#else /* HAVE_LCD_BITMAP */
#define TREE_MAX_ON_SCREEN 2
#define TREE_MAX_LEN_DISPLAY 11 /* max length that fits on screen */
#define LINE_Y 0 /* Y position the entry-list starts at */
#define LINE_X 1 /* X position the entry-list starts at */
#endif /* HAVE_LCD_BITMAP */
static int compare(const void* e1, const void* e2)
{
return strncmp((*(struct entry**)e1)->name, (*(struct entry**)e2)->name,
TREE_MAX_FILENAMELEN);
}
static int showdir(char *path, int start)
{
static char lastdir[256] = {0};
#ifdef HAVE_LCD_BITMAP
int icon_type = 0;
#endif
int i;
/* new dir? cache it */
if (strncmp(path,lastdir,sizeof(lastdir))) {
DIR *dir = opendir(path);
if(!dir)
return -1; /* not a directory */
memset(dircacheptr,0,sizeof(dircacheptr));
for ( i=0; i<MAX_FILES_IN_DIR; i++ ) {
struct dirent *entry = readdir(dir);
if (!entry)
break;
if(entry->d_name[0] == '.') {
/* skip names starting with a dot */
i--;
continue;
}
dircache[i].file = !(entry->attribute & ATTR_DIRECTORY);
strncpy(dircache[i].name,entry->d_name,TREE_MAX_FILENAMELEN);
dircache[i].name[TREE_MAX_FILENAMELEN-1]=0;
dircacheptr[i] = &dircache[i];
}
filesindir = i;
closedir(dir);
strncpy(lastdir,path,sizeof(lastdir));
lastdir[sizeof(lastdir)-1] = 0;
qsort(dircacheptr,filesindir,sizeof(struct entry*),compare);
}
lcd_clear_display();
#ifdef HAVE_LCD_BITMAP
lcd_putsxy(0,0, "[Browse]",0);
lcd_update();
#endif
for ( i=start; i < start+TREE_MAX_ON_SCREEN; i++ ) {
int len;
if ( i >= filesindir )
break;
len = strlen(dircacheptr[i]->name);
#ifdef HAVE_LCD_BITMAP
if ( dircacheptr[i]->file )
icon_type=File;
else
icon_type=Folder;
lcd_bitmap(bitmap_icons_6x8[icon_type],
6, MARGIN_Y+(i-start)*LINE_HEIGTH, 6, 8, true);
#endif
if(len < TREE_MAX_LEN_DISPLAY)
lcd_puts(LINE_X, LINE_Y+i-start, dircacheptr[i]->name);
else {
char storage = dircacheptr[i]->name[TREE_MAX_LEN_DISPLAY];
dircacheptr[i]->name[TREE_MAX_LEN_DISPLAY]=0;
lcd_puts(LINE_X, LINE_Y+i-start, dircacheptr[i]->name);
dircacheptr[i]->name[TREE_MAX_LEN_DISPLAY]=storage;
}
}
return filesindir;
}
bool dirbrowse(char *root)
{
int numentries;
char buf[255];
char currdir[255];
int dircursor=0;
int i;
int start=0;
int dirpos[MAX_DIR_LEVELS];
int dirlevel=0;
lcd_clear_display();
#ifdef HAVE_LCD_BITMAP
lcd_putsxy(0,0, "[Browse]",0);
lcd_setmargins(0,MARGIN_Y);
lcd_setfont(0);
#endif
memcpy(currdir,root,sizeof(currdir));
numentries = showdir(root, start);
if (numentries == -1)
return -1; /* root is not a directory */
lcd_puts(0, dircursor, "-");
#ifdef HAVE_LCD_BITMAP
lcd_update();
#endif
while(1) {
switch(button_get(true)) {
#if defined(SIMULATOR) && defined(HAVE_RECODER_KEYPAD)
case BUTTON_OFF:
return false;
#endif
#ifdef HAVE_RECORDER_KEYPAD
case BUTTON_LEFT:
#else
case BUTTON_STOP:
#endif
i=strlen(currdir);
if (i>1) {
while (currdir[i-1]!='/')
i--;
strcpy(buf,&currdir[i]);
if (i==1)
currdir[i]=0;
else
currdir[i-1]=0;
dirlevel--;
if ( dirlevel < MAX_DIR_LEVELS )
start = dirpos[dirlevel];
else
start = 0;
numentries = showdir(currdir, start);
dircursor=0;
while ( (dircursor < TREE_MAX_ON_SCREEN) &&
(strcmp(dircacheptr[dircursor+start]->name,buf)))
dircursor++;
if (dircursor==TREE_MAX_ON_SCREEN)
dircursor=0;
lcd_puts(0, LINE_Y+dircursor, "-");
}
else
mpeg_stop();
break;
#ifdef HAVE_RECORDER_KEYPAD
case BUTTON_RIGHT:
#endif
case BUTTON_PLAY:
if ((currdir[0]=='/') && (currdir[1]==0)) {
snprintf(buf,sizeof(buf),"%s%s",currdir,
dircacheptr[dircursor+start]->name);
} else {
snprintf(buf,sizeof(buf),"%s/%s",currdir,
dircacheptr[dircursor+start]->name);
}
if (!dircacheptr[dircursor+start]->file) {
memcpy(currdir,buf,sizeof(currdir));
if ( dirlevel < MAX_DIR_LEVELS )
dirpos[dirlevel] = start+dircursor;
dirlevel++;
dircursor=0;
start=0;
} else {
playtune(currdir, dircacheptr[dircursor+start]->name);
#ifdef HAVE_LCD_BITMAP
lcd_setmargins(0, MARGIN_Y);
lcd_setfont(0);
#endif
}
numentries = showdir(currdir, start);
lcd_puts(0, LINE_Y+dircursor, "-");
break;
#ifdef HAVE_RECORDER_KEYPAD
case BUTTON_UP:
#else
case BUTTON_LEFT:
#endif
if(dircursor) {
lcd_puts(0, LINE_Y+dircursor, " ");
dircursor--;
lcd_puts(0, LINE_Y+dircursor, "-");
lcd_update();
}
else {
if (start) {
start--;
numentries = showdir(currdir, start);
lcd_puts(0, LINE_Y+dircursor, "-");
}
}
break;
#ifdef HAVE_RECORDER_KEYPAD
case BUTTON_DOWN:
#else
case BUTTON_RIGHT:
#endif
if (dircursor + start + 1 < numentries ) {
if(dircursor+1 < TREE_MAX_ON_SCREEN) {
lcd_puts(0, LINE_Y+dircursor, " ");
dircursor++;
lcd_puts(0, LINE_Y+dircursor, "-");
}
else {
start++;
numentries = showdir(currdir, start);
lcd_puts(0, LINE_Y+dircursor, "-");
}
}
break;
#ifdef HAVE_RECORDER_KEYPAD
case BUTTON_F1:
case BUTTON_F2:
case BUTTON_F3:
#else
case BUTTON_MENU:
#endif
main_menu();
/* restore display */
/* TODO: this is just a copy from BUTTON_STOP, fix it */
lcd_clear_display();
#ifdef HAVE_LCD_BITMAP
lcd_putsxy(0,0, "[Browse]",0);
lcd_setmargins(0,MARGIN_Y);
lcd_setfont(0);
#endif
numentries = showdir(currdir, start);
dircursor=0;
while ( (dircursor < TREE_MAX_ON_SCREEN) &&
(strcmp(dircacheptr[dircursor+start]->name,buf)))
dircursor++;
if (dircursor==TREE_MAX_ON_SCREEN)
dircursor=0;
lcd_puts(0, LINE_Y+dircursor, "-");
break;
}
lcd_update();
}
return false;
}