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Handle text scrolling in RTL.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@23021 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Mohamed Tarek 2009-10-09 00:56:37 +00:00
parent d7cdd08664
commit 2282607224
1 changed files with 5 additions and 4 deletions
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9
firmware/drivers/lcd-bitmap-common.c
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@ -302,7 +302,8 @@ void LCDFN(scroll_fn)(void)
LCDFN(set_viewport)(s->vp);
if (s->backward)
if (s->backward ^ VP_IS_RTL(current_vp))
/* contrary to LTR, this is "forward" in RTL */
s->offset -= LCDFN(scroll_info).step;
else
s->offset += LCDFN(scroll_info).step;
@ -312,13 +313,13 @@ void LCDFN(scroll_fn)(void)
ypos = s->y * pf->height;
if (s->bidir) { /* scroll bidirectional */
if (s->offset <= 0) {
if (abs(s->offset) <= 0) {
/* at beginning of line */
s->offset = 0;
s->backward = false;
s->start_tick = current_tick + LCDFN(scroll_info).delay * 2;
}
if (s->offset >= s->width - (current_vp->width - xpos)) {
if (abs(s->offset) >= s->width - (current_vp->width - xpos)) {
/* at end of line */
s->offset = s->width - (current_vp->width - xpos);
s->backward = true;
@ -327,7 +328,7 @@ void LCDFN(scroll_fn)(void)
}
else {
/* scroll forward the whole time */
if (s->offset >= s->width)
if (abs(s->offset) >= s->width)
s->offset %= s->width;
}
LCDFN(putsxyofs_style)(xpos, ypos, s->line, s->style, s->width,