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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* New greyscale framework
* Parameter handling
*
* This is a generic framework to display 129 shades of grey on low-depth
* bitmap LCDs (Archos b&w, Iriver & Ipod 4-grey) within plugins.
*
* Copyright (C) 2008 Jens Arnold
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "plugin.h"
#include "grey.h"
/* Set position of the top left corner of the greyscale overlay
Note that depending on the target LCD, either x or y gets rounded
to the nearest multiple of 4 or 8 */
void grey_set_position(int x, int y)
{
#if LCD_PIXELFORMAT == HORIZONTAL_PACKING
_grey_info.bx = (x + 4) >> 3;
x = 8 * _grey_info.bx;
#else
#if LCD_DEPTH == 1
_grey_info.by = (y + 4) >> 3;
y = 8 * _grey_info.by;
#elif LCD_DEPTH == 2
_grey_info.by = (y + 2) >> 2;
y = 4 * _grey_info.by;
#endif
#endif /* LCD_PIXELFORMAT */
_grey_info.x = x;
_grey_info.y = y;
if (_grey_info.flags & _GREY_RUNNING)
{
#ifdef SIMULATOR
_grey_info.rb->sim_lcd_ex_update_rect(_grey_info.x, _grey_info.y,
_grey_info.width,
_grey_info.height);
grey_deferred_lcd_update();
#else
_grey_info.flags |= _GREY_DEFERRED_UPDATE;
#endif
}
}
/* Set the draw mode for subsequent drawing operations */
void grey_set_drawmode(int mode)
{
_grey_info.drawmode = mode & (DRMODE_SOLID|DRMODE_INVERSEVID);
}
/* Return the current draw mode */
int grey_get_drawmode(void)
{
return _grey_info.drawmode;
}
/* Set the foreground shade for subsequent drawing operations */
void grey_set_foreground(unsigned brightness)
{
_grey_info.fg_brightness = brightness;
}
/* Return the current foreground shade */
unsigned grey_get_foreground(void)
{
return _grey_info.fg_brightness;
}
/* Set the background shade for subsequent drawing operations */
void grey_set_background(unsigned brightness)
{
_grey_info.bg_brightness = brightness;
}
/* Return the current background shade */
unsigned grey_get_background(void)
{
return _grey_info.bg_brightness;
}
/* Set draw mode, foreground and background shades at once */
void grey_set_drawinfo(int mode, unsigned fg_brightness, unsigned bg_brightness)
{
grey_set_drawmode(mode);
grey_set_foreground(fg_brightness);
grey_set_background(bg_brightness);
}
/* Set font for the text output routines */
void grey_setfont(int newfont)
{
_grey_info.curfont = newfont;
}
/* Get width and height of a text when printed with the current font */
int grey_getstringsize(const unsigned char *str, int *w, int *h)
{
return _grey_info.rb->font_getstringsize(str, w, h, _grey_info.curfont);
}
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