Rockbox

This is support for simple font scaling on the wps screen.
I've posted some screenshots in the forum: http://forums.rockbox.org/index.php?topic=2856.0

By simple font scaling, I mean that the font characters are just increased by a factor of 2 or 3 (or more). No anti-aliasing is done, so most of the font's will look pixelated when displayed larger than their native size.

I've only tested this on the H120/140 + remote, so this only patches the lcd code for that platform. I only changed generic code for the lcds, hence, I think the code should be easily portable to the other targets.

To use font scaling on the wps screen, use the syntax %h2 or %h3 to increase the font size by a factor of 2 or 3. This affects all the text on that line (you can't scale just part of the line). IMPORTANT: if you use %h2, leave the next line empty in the wps file. If you use %h3, leave the next 2 lines blank. (This is necessary because the wps and lcd code is line-based.) Also, you can scroll scaled text.

I'll be the first to admit that scaling most of the fonts does not produce a nice effect. However, the "snap" font does look good (see the screen shots). I also don't know if (or how much) the font scaling affects performance.

Let me know what you think.

 firmware/font.c                    |   95 +++++++++++++++++++++++++++++++++++--
 firmware/export/font.h             |    4 +
 firmware/export/lcd.h              |    3 +
 firmware/drivers/lcd-h100.c        |   41 +++++++++++----
 firmware/export/lcd-remote.h       |    2 
 firmware/drivers/lcd-h100-remote.c |   42 +++++++++++-----
 apps/screen_access.h               |    2 
 apps/screen_access.c               |    4 +
 apps/gui/gwps-common.c             |   26 ++++++++--
 tools/convbdf.c                    |    6 +-
 10 files changed, 192 insertions(+), 33 deletions(-)