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Pixel-accurate (vertical) list scrolling for touchscreen targets.

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Looks much smoother now as you don't scroll by whole lines anymore.
Add some functions lcd driver to enable the line based scrolling engine to draw the lines with a pixel-based y-offset.
This should also allow for a sensible kinetic scrolling mechanism (still a todo).

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28214 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Thomas Martitz 2010-10-06 12:46:42 +00:00
parent 53a936ab83
commit d9d0b4dd20
6 changed files with 139 additions and 44 deletions
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12
apps/screen_access.h
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@ -77,11 +77,15 @@ struct screen
void (*scroll_step)(int pixels);
void (*puts_style_offset)(int x, int y, const unsigned char *str,
int style, int offset);
int style, int x_offset);
void (*puts_style_xyoffset)(int x, int y, const unsigned char *str,
int style, int x_offset, int y_offset);
void (*puts_scroll_style)(int x, int y, const unsigned char *string,
int style);
void (*puts_scroll_style_offset)(int x, int y, const unsigned char *string,
int style, int offset);
int style, int x_offset);
void (*puts_scroll_style_xyoffset)(int x, int y, const unsigned char *string,
int style, int x_offset, int y_offset);
void (*mono_bitmap)(const unsigned char *src,
int x, int y, int width, int height);
void (*mono_bitmap_part)(const unsigned char *src, int src_x, int src_y,
@ -134,7 +138,9 @@ struct screen
void (*puts_offset)(int x, int y, const unsigned char *str, int offset);
void (*puts_scroll)(int x, int y, const unsigned char *string);
void (*puts_scroll_offset)(int x, int y, const unsigned char *string,
int offset);
int x_offset);
void (*puts_scroll_xyoffset)(int x, int y, const unsigned char *string,
int x_offset, int y_offset);
void (*scroll_speed)(int speed);
void (*scroll_delay)(int ms);
void (*stop_scroll)(void);