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first implementation of directory scrolling - partly by Stefan Meyer

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@481 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Dave Chapman 2002-05-06 17:02:57 +00:00
parent f830e3827f
commit 04fdc1eb83
1 changed files with 43 additions and 5 deletions
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48
uisimulator/tree.c
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@ -33,7 +33,7 @@
#define TREE_MAX_FILENAMELEN 64
#define TREE_MAX_ON_SCREEN 7
#define TREE_MAX_LEN_DISPLAY 17 /* max length that fits on screen */
void browse_root(void) {
dirbrowse("/");
}
@ -61,9 +61,10 @@ bool is_dir(char* path)
}
int static
showdir(char *path, struct entry *buffer, int start)
showdir(char *path, struct entry *buffer, int start, int scrollpos, int* at_end)
{
int i;
int j=0;
DIR *dir = opendir(path);
struct dirent *entry;
@ -71,6 +72,7 @@ showdir(char *path, struct entry *buffer, int start)
return -1; /* not a directory */
i=start;
*at_end=0; /* Have we displayed the last directory entry? */
while((entry = readdir(dir))) {
int len;
@ -78,6 +80,9 @@ showdir(char *path, struct entry *buffer, int start)
/* skip names starting with a dot */
continue;
if(j++ < scrollpos)
continue ;
len = strlen(entry->d_name);
if(len < TREE_MAX_FILENAMELEN)
/* strncpy() is evil, we memcpy() instead, +1 includes the
@ -101,6 +106,15 @@ showdir(char *path, struct entry *buffer, int start)
break;
}
if (entry==0) {
*at_end=1;
} else {
*at_end=(readdir(dir)==0);
}
j = i ;
while (j++ < TREE_MAX_ON_SCREEN) {
lcd_puts(LINE_X, LINE_Y+j*LINE_HEIGTH," ", 0);
}
closedir(dir);
return i;
@ -116,6 +130,8 @@ bool dirbrowse(char *root)
char currdir[255];
int dircursor=0;
int i;
int start=0;
int at_end=0;
#ifdef HAVE_LCD_BITMAP
lcd_clear_display();
@ -123,7 +139,7 @@ bool dirbrowse(char *root)
lcd_puts(0,0, "[Browse]", 0);
memcpy(currdir,root,sizeof(currdir));
numentries = showdir(root, buffer, 0);
numentries = showdir(root, buffer, 0, start, &at_end);
if (numentries == -1) return -1; /* root is not a directory */
@ -155,10 +171,12 @@ bool dirbrowse(char *root)
lcd_clear_display();
lcd_puts(0,0, "[Browse]", 0);
numentries = showdir(currdir, buffer, 0);
numentries = showdir(currdir, buffer, 0, 0, &at_end);
dircursor=0;
start=0;
while ( (dircursor < TREE_MAX_ON_SCREEN) &&
(strcmp(buffer[dircursor].name,buf)!=0)) dircursor++;
if (dircursor==TREE_MAX_ON_SCREEN) dircursor=0;
lcd_puts(0, LINE_Y+dircursor*LINE_HEIGTH, "-", 0);
lcd_update();
}
@ -176,13 +194,14 @@ bool dirbrowse(char *root)
if (is_dir(buf)) {
memcpy(currdir,buf,sizeof(currdir));
dircursor=0;
start=0;
} else {
playtune(currdir, buffer[dircursor].name);
}
lcd_clear_display();
lcd_puts(0,0, "[Browse]", 0);
numentries = showdir(currdir, buffer, 0);
numentries = showdir(currdir, buffer, 0, 0, &at_end);
lcd_puts(0, LINE_Y+dircursor*LINE_HEIGTH, "-", 0);
lcd_update();
break;
@ -193,6 +212,15 @@ bool dirbrowse(char *root)
dircursor--;
lcd_puts(0, LINE_Y+dircursor*LINE_HEIGTH, "-", 0);
lcd_update();
} else
{
if (start) {
lcd_clear_display();
lcd_puts(0,0, "[Browse]", 0);
numentries = showdir(currdir, buffer, 0, --start, &at_end);
lcd_puts(0, LINE_Y+dircursor*LINE_HEIGTH, "-", 0);
lcd_update();
}
}
break;
case BUTTON_DOWN:
@ -201,6 +229,16 @@ bool dirbrowse(char *root)
dircursor++;
lcd_puts(0, LINE_Y+dircursor*LINE_HEIGTH, "-", 0);
lcd_update();
} else
{
if (!at_end) {
lcd_clear_display();
lcd_puts(0,0, "[Browse]", 0);
numentries = showdir(currdir, buffer, 0, ++start, &at_end);
lcd_puts(0, LINE_Y+dircursor*LINE_HEIGTH, "-", 0);
lcd_update();
}
}
break;
}