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added a speedup for browsing long directories

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@1565 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Eric Linenberg 2002-08-06 18:11:00 +00:00
parent e4b8c04788
commit 9e91b95c7a
1 changed files with 116 additions and 5 deletions
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121
apps/tree.c
View file

@ -266,6 +266,8 @@ bool dirbrowse(char *root)
int i;
int rc;
int button;
int browse_speed = 0;
memcpy(currdir,root,sizeof(currdir));
numentries = showdir(root, start);
@ -335,6 +337,7 @@ bool dirbrowse(char *root)
#ifdef HAVE_RECORDER_KEYPAD
case BUTTON_PLAY:
#endif
browse_speed = 0;
if ( !numentries )
break;
if ((currdir[0]=='/') && (currdir[1]==0)) {
@ -386,11 +389,63 @@ bool dirbrowse(char *root)
}
restore = true;
break;
case TREE_PREV:
case TREE_PREV | BUTTON_REPEAT:
if(filesindir)
{
browse_speed++; /* increase the browse speed every time we get here */
if(filesindir) {
if(dircursor) {
if (browse_speed < 7) {
/* moving the cursor up through a full screen */
put_cursorxy(0, CURSOR_Y + LINE_Y+dircursor,
false);
dircursor--;
put_cursorxy(0, CURSOR_Y + LINE_Y+dircursor, true);
}
else {
/* if we have wrapped from the bottom we want to keep up the speed */
put_cursorxy(0, CURSOR_Y + LINE_Y+dircursor,
false);
dircursor=0;
put_cursorxy(0, CURSOR_Y + LINE_Y+dircursor, true);
}
}
else {
if (start) {
/* leaving the cursor at top line and moving screen down */
if (browse_speed >=7)
start = start - 7;
else
start--;
if (start<0)
start=0;
numentries = showdir(currdir, start);
put_cursorxy(0, CURSOR_Y + LINE_Y+dircursor, true);
}
else {
/* wrapping to the top in a directory that is not full */
if (numentries < TREE_MAX_ON_SCREEN) {
put_cursorxy(0, CURSOR_Y + LINE_Y+dircursor,
false);
dircursor = numentries - 1;
browse_speed=0;
put_cursorxy(0, CURSOR_Y + LINE_Y+dircursor,
true);
}
else {
/* starting at the very bottom after a wrap */
start = numentries - TREE_MAX_ON_SCREEN;
dircursor = TREE_MAX_ON_SCREEN - 1;
numentries = showdir(currdir, start);
put_cursorxy(0, CURSOR_Y + LINE_Y +
TREE_MAX_ON_SCREEN - 1, true);
}
}
}
}
break;
case TREE_PREV:
browse_speed = 0;
if(filesindir) {
if(dircursor) {
put_cursorxy(0, CURSOR_Y + LINE_Y+dircursor, false);
dircursor--;
@ -422,9 +477,63 @@ bool dirbrowse(char *root)
lcd_update();
}
break;
case TREE_NEXT | BUTTON_REPEAT:
browse_speed++; /* increase the browse speed every time we get here */
if(filesindir)
{
if (dircursor + start + 1 < numentries ) {
if(dircursor+1 < TREE_MAX_ON_SCREEN) {
if (browse_speed < 7) {
/* moving the cursor down through a full screen */
put_cursorxy(0, CURSOR_Y + LINE_Y+dircursor,
false);
dircursor++;
put_cursorxy(0, CURSOR_Y + LINE_Y+dircursor, true);
}
else {
/* if we have wrapped from the bottom we want to keep up the speed */
put_cursorxy(0, CURSOR_Y + LINE_Y+dircursor,
false);
dircursor=7;
put_cursorxy(0, CURSOR_Y + LINE_Y+dircursor, true);
}
}
else {
/* leaving the cursor at bottom line and moving screen up */
if (browse_speed >= TREE_MAX_ON_SCREEN-1)
/* make sure we do not go past the end of the directory */
if (start + TREE_MAX_ON_SCREEN - 1 < numentries-TREE_MAX_ON_SCREEN)
start = start + TREE_MAX_ON_SCREEN -1;
else
start = numentries-TREE_MAX_ON_SCREEN;
else
start++;
numentries = showdir(currdir, start);
put_cursorxy(0, CURSOR_Y + LINE_Y+dircursor, true);
}
}
else {
/* restarting at the top when there is less than 7 files */
if(numentries < TREE_MAX_ON_SCREEN) {
put_cursorxy(0, CURSOR_Y + LINE_Y+dircursor,
false);
start = dircursor = browse_speed = 0;
put_cursorxy(0, CURSOR_Y + LINE_Y+dircursor, true);
}
else {
/* restarting at the top when the screen scrolls */
start = dircursor = 0 ;
numentries = showdir(currdir, start);
put_cursorxy(0, CURSOR_Y + LINE_Y+dircursor, true);
}
}
lcd_update();
}
break;
case TREE_NEXT:
case TREE_NEXT | BUTTON_REPEAT:
browse_speed = 0;
if(filesindir)
{
if (dircursor + start + 1 < numentries ) {
@ -458,6 +567,7 @@ bool dirbrowse(char *root)
break;
case TREE_MENU: {
browse_speed = 0;
bool lastfilter = global_settings.mp3filter;
bool lastsortcase = global_settings.sort_case;
lcd_stop_scroll();
@ -471,6 +581,7 @@ bool dirbrowse(char *root)
}
case BUTTON_ON:
browse_speed = 0;
/* The mpeg thread may have stopped playing, so we'd
better update our status */
if(!mpeg_is_playing())