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Add Vertical stride support to LCD scrolling functions.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22683 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Karl Kurbjun 2009-09-12 16:42:11 +00:00
parent ced32dfc48
commit 2544b001b8
1 changed files with 92 additions and 0 deletions
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92
apps/plugins/lib/xlcd_scroll.c
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@ -31,6 +31,97 @@
static const unsigned short patterns[4] = {0xFFFF, 0xFF00, 0x00FF, 0x0000};
#endif
#if defined(LCD_STRIDEFORMAT) && LCD_STRIDEFORMAT == VERTICAL_STRIDE
void xlcd_scroll_left(int count)
{
int length, oldmode;
if ((unsigned)count >= LCD_WIDTH)
return;
length = (LCD_WIDTH-count)*LCD_FBHEIGHT;
rb->memmove(rb->lcd_framebuffer, rb->lcd_framebuffer + LCD_HEIGHT*count,
length * sizeof(fb_data));
oldmode = rb->lcd_get_drawmode();
rb->lcd_set_drawmode(DRMODE_SOLID|DRMODE_INVERSEVID);
rb->lcd_fillrect(LCD_WIDTH-count, 0, count, LCD_HEIGHT);
rb->lcd_set_drawmode(oldmode);
}
/* Scroll right */
void xlcd_scroll_right(int count)
{
int length, oldmode;
if ((unsigned)count >= LCD_WIDTH)
return;
length = (LCD_WIDTH-count)*LCD_FBHEIGHT;
rb->memmove(rb->lcd_framebuffer + LCD_HEIGHT*count,
rb->lcd_framebuffer, length * sizeof(fb_data));
oldmode = rb->lcd_get_drawmode();
rb->lcd_set_drawmode(DRMODE_SOLID|DRMODE_INVERSEVID);
rb->lcd_fillrect(0, 0, count, LCD_HEIGHT);
rb->lcd_set_drawmode(oldmode);
}
/* Scroll up */
void xlcd_scroll_up(int count)
{
int width, length, oldmode;
fb_data *data;
if ((unsigned)count >= LCD_HEIGHT)
return;
length = LCD_HEIGHT - count;
width = LCD_WIDTH;
data = rb->lcd_framebuffer;
do {
rb->memmove(data,data + count,length * sizeof(fb_data));
data += LCD_HEIGHT;
} while(width--);
oldmode = rb->lcd_get_drawmode();
rb->lcd_set_drawmode(DRMODE_SOLID|DRMODE_INVERSEVID);
rb->lcd_fillrect(0, length, LCD_WIDTH, count);
rb->lcd_set_drawmode(oldmode);
}
/* Scroll down */
void xlcd_scroll_down(int count)
{
int width, length, oldmode;
fb_data *data;
if ((unsigned)count >= LCD_HEIGHT)
return;
length = LCD_HEIGHT - count;
width = LCD_WIDTH;
data = rb->lcd_framebuffer;
do {
rb->memmove(data + count, data, length * sizeof(fb_data));
data += LCD_HEIGHT;
} while(width--);
oldmode = rb->lcd_get_drawmode();
rb->lcd_set_drawmode(DRMODE_SOLID|DRMODE_INVERSEVID);
rb->lcd_fillrect(0, 0, LCD_WIDTH, count);
rb->lcd_set_drawmode(oldmode);
}
#else
#if (LCD_PIXELFORMAT == HORIZONTAL_PACKING) && (LCD_DEPTH < 8)
/* Scroll left */
@ -629,5 +720,6 @@ void xlcd_scroll_down(int count)
}
#endif /* LCD_PIXELFORMAT, LCD_DEPTH */
#endif /* defined(LCD_STRIDEFORMAT) && LCD_STRIDEFORMAT == VERTICAL_STRIDE */
#endif /* HAVE_LCD_BITMAP */