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Diffstat (limited to 'apps/plugins/lib/gray_getstringsize.c')
-rw-r--r-- | apps/plugins/lib/gray_getstringsize.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/apps/plugins/lib/gray_getstringsize.c b/apps/plugins/lib/gray_getstringsize.c new file mode 100644 index 0000000000..977b912247 --- /dev/null +++ b/apps/plugins/lib/gray_getstringsize.c | |||
@@ -0,0 +1,64 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Grayscale framework | ||
11 | * gray_getstringsize() function | ||
12 | * | ||
13 | * This is a generic framework to use grayscale display within Rockbox | ||
14 | * plugins. It obviously does not work for the player. | ||
15 | * | ||
16 | * Copyright (C) 2004 Jens Arnold | ||
17 | * | ||
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. | ||
20 | * | ||
21 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
22 | * KIND, either express or implied. | ||
23 | * | ||
24 | ****************************************************************************/ | ||
25 | |||
26 | #ifndef SIMULATOR /* not for simulator by now */ | ||
27 | #include "plugin.h" | ||
28 | |||
29 | #ifdef HAVE_LCD_BITMAP /* and also not for the Player */ | ||
30 | #include "gray.h" | ||
31 | |||
32 | /*--------------------------------------------------------------------------- | ||
33 | Calculate width and height of the given text in pixels when rendered with | ||
34 | the currently selected font. | ||
35 | ---------------------------------------------------------------------------- | ||
36 | This works exactly the same way as the core lcd_getstringsize(), only that | ||
37 | it uses the selected font for grayscale. | ||
38 | */ | ||
39 | int gray_getstringsize(unsigned char *str, int *w, int *h) | ||
40 | { | ||
41 | int ch; | ||
42 | int width = 0; | ||
43 | struct font *pf = _graybuf->curfont; | ||
44 | |||
45 | while ((ch = *str++)) | ||
46 | { | ||
47 | /* check input range */ | ||
48 | if (ch < pf->firstchar || ch >= pf->firstchar + pf->size) | ||
49 | ch = pf->defaultchar; | ||
50 | ch -= pf->firstchar; | ||
51 | |||
52 | /* get proportional width */ | ||
53 | width += pf->width ? pf->width[ch] : pf->maxwidth; | ||
54 | } | ||
55 | if (w) | ||
56 | *w = width; | ||
57 | if (h) | ||
58 | *h = pf->height; | ||
59 | return width; | ||
60 | } | ||
61 | |||
62 | #endif // #ifdef HAVE_LCD_BITMAP | ||
63 | #endif // #ifndef SIMULATOR | ||
64 | |||