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Pluginlib: make scroll functions clear screen if scrolled by >= screen size (from FS#10330)

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@23211 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Torne Wuff 2009-10-16 20:15:12 +00:00
parent a3f0a45c0f
commit 27ece8c366
2 changed files with 60 additions and 0 deletions
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24
apps/plugins/lib/grey_scroll.c
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@ -37,7 +37,10 @@ void grey_scroll_left(int count)
int length, blank;
if ((unsigned)count >= (unsigned)_grey_info.width)
{
grey_clear_display();
return;
}
data = _grey_info.buffer;
data_end = data + _GREY_MULUQ(_grey_info.width, _grey_info.height);
@ -62,7 +65,10 @@ void grey_scroll_right(int count)
int length, blank;
if ((unsigned)count >= (unsigned)_grey_info.width)
{
grey_clear_display();
return;
}
data = _grey_info.buffer;
data_end = data + _GREY_MULUQ(_grey_info.width, _grey_info.height);
@ -86,7 +92,10 @@ void grey_scroll_up(int count)
int blank;
if ((unsigned)count >= (unsigned)_grey_info.height)
{
grey_clear_display();
return;
}
shift = _GREY_MULUQ(_grey_info.width, count);
length = _GREY_MULUQ(_grey_info.width, _grey_info.height - count);
@ -105,7 +114,10 @@ void grey_scroll_down(int count)
int blank;
if ((unsigned)count >= (unsigned)_grey_info.height)
{
grey_clear_display();
return;
}
shift = _GREY_MULUQ(_grey_info.width, count);
length = _GREY_MULUQ(_grey_info.width, _grey_info.height - count);
@ -126,7 +138,10 @@ void grey_ub_scroll_left(int count)
int blank, length;
if ((unsigned)count >= (unsigned)_grey_info.width)
{
grey_ub_clear_display();
return;
}
data = _grey_info.values;
data_end = data + _GREY_MULUQ(_grey_info.width, _grey_info.height);
@ -156,7 +171,10 @@ void grey_ub_scroll_right(int count)
int blank, length;
if ((unsigned)count >= (unsigned)_grey_info.width)
{
grey_ub_clear_display();
return;
}
data = _grey_info.values;
data_end = data + _GREY_MULUQ(_grey_info.width, _grey_info.height);
@ -185,7 +203,10 @@ void grey_ub_scroll_up(int count)
int blank;
if ((unsigned)count >= (unsigned)_grey_info.height)
{
grey_ub_clear_display();
return;
}
dst = _grey_info.values;
end = dst + _GREY_MULUQ(_grey_info.height, _grey_info.width);
@ -257,7 +278,10 @@ void grey_ub_scroll_down(int count)
int blank;
if ((unsigned)count >= (unsigned)_grey_info.height)
{
grey_ub_clear_display();
return;
}
start = _grey_info.values;
dst = start + _GREY_MULUQ(_grey_info.height, _grey_info.width);