1 /***************************************************************************
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
10 * New greyscale framework
13 * This is a generic framework to display 129 shades of grey on low-depth
14 * bitmap LCDs (Archos b&w, Iriver & Ipod 4-grey) within plugins.
16 * Copyright (C) 2008 Jens Arnold
18 * All files in this archive are subject to the GNU General Public License.
19 * See the file COPYING in the source tree root for full license agreement.
21 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
22 * KIND, either express or implied.
24 ****************************************************************************/
29 /* Set position of the top left corner of the greyscale overlay
30 Note that depending on the target LCD, either x or y gets rounded
31 to the nearest multiple of 4 or 8 */
32 void grey_set_position(int x
, int y
)
34 #if LCD_PIXELFORMAT == HORIZONTAL_PACKING
35 _grey_info
.bx
= (x
+ 4) >> 3;
36 x
= 8 * _grey_info
.bx
;
37 #else /* vertical packing or vertical interleaved */
38 #if (LCD_DEPTH == 1) || (LCD_PIXELFORMAT == VERTICAL_INTERLEAVED)
39 _grey_info
.by
= (y
+ 4) >> 3;
40 y
= 8 * _grey_info
.by
;
42 _grey_info
.by
= (y
+ 2) >> 2;
43 y
= 4 * _grey_info
.by
;
45 #endif /* LCD_PIXELFORMAT */
49 if (_grey_info
.flags
& _GREY_RUNNING
)
52 _grey_info
.rb
->sim_lcd_ex_update_rect(_grey_info
.x
, _grey_info
.y
,
55 grey_deferred_lcd_update();
57 _grey_info
.flags
|= _GREY_DEFERRED_UPDATE
;
62 /* Set the draw mode for subsequent drawing operations */
63 void grey_set_drawmode(int mode
)
65 _grey_info
.drawmode
= mode
& (DRMODE_SOLID
|DRMODE_INVERSEVID
);
68 /* Return the current draw mode */
69 int grey_get_drawmode(void)
71 return _grey_info
.drawmode
;
74 /* Set the foreground shade for subsequent drawing operations */
75 void grey_set_foreground(unsigned brightness
)
77 _grey_info
.fg_brightness
= brightness
;
80 /* Return the current foreground shade */
81 unsigned grey_get_foreground(void)
83 return _grey_info
.fg_brightness
;
86 /* Set the background shade for subsequent drawing operations */
87 void grey_set_background(unsigned brightness
)
89 _grey_info
.bg_brightness
= brightness
;
92 /* Return the current background shade */
93 unsigned grey_get_background(void)
95 return _grey_info
.bg_brightness
;
98 /* Set draw mode, foreground and background shades at once */
99 void grey_set_drawinfo(int mode
, unsigned fg_brightness
, unsigned bg_brightness
)
101 grey_set_drawmode(mode
);
102 grey_set_foreground(fg_brightness
);
103 grey_set_background(bg_brightness
);
106 /* Set font for the text output routines */
107 void grey_setfont(int newfont
)
109 _grey_info
.curfont
= newfont
;
112 /* Get width and height of a text when printed with the current font */
113 int grey_getstringsize(const unsigned char *str
, int *w
, int *h
)
115 return _grey_info
.rb
->font_getstringsize(str
, w
, h
, _grey_info
.curfont
);