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comparison src/fontdraw.h @ 0:c84446dfb3f5

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author paulo@localhost
date Fri, 13 Mar 2009 00:39:12 -0700
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1 /*
2 Variable width font drawing library for DS (and GBA)
3
4 Copyright 2007 Damian Yerrick <pinoandchester@pineight.com>
5
6 This work is provided 'as-is', without any express or implied
7 warranty. In no event will the authors be held liable for any
8 damages arising from the use of this work.
9
10 Permission is granted to anyone to use this work for any purpose,
11 including commercial applications, and to alter it and redistribute
12 it freely, subject to the following restrictions:
13
14 1. The origin of this work must not be misrepresented; you must
15 not claim that you wrote the original work. If you use
16 this work in a product, an acknowledgment in the product
17 documentation would be appreciated but is not required.
18 2. Altered source versions must be plainly marked as such, and must
19 not be misrepresented as being the original work.
20 3. This notice may not be removed or altered from any source
21 distribution.
22
23 "Source" is the preferred form of a work for making changes to it.
24
25 */
26
27 #ifndef FONTDRAW_H
28 #define FONTDRAW_H
29 #include <sys/types.h>
30
31 #ifdef ARM9
32 // DS specific macros
33 #include <nds.h>
34 #ifndef BG_OFFSET_SUB
35 #define BG_OFFSET_SUB ((bg_scroll *)(0x04001010))
36 #endif
37
38 // macros from libgba that didn't make it to libnds
39 #ifndef MAP
40 typedef u16 NAMETABLE[32][32];
41 #define MAP ((NAMETABLE *)BG_MAP_RAM(0))
42 #define MAP_SUB ((NAMETABLE *)BG_MAP_RAM_SUB(0))
43 #endif
44
45 #else
46 // GBA specific macros
47 #include <gba_video.h>
48
49 #endif
50
51 unsigned int fontdraw_charWidth(int glyph);
52 unsigned int fontdraw_strWidth(const char *s);
53
54 /**
55 * Returns the number of characters in s that fit within targetWidth pixels.
56 */
57 size_t fontdraw_cutStr(const char *s, int targetWidth);
58
59 void fontdraw_setupVRAM(int sub);
60
61 // New API
62
63 typedef struct VWFWindow {
64 u8 left; // in 8 pixel units on nametable
65 u8 top; // in 8 pixel units on nametable
66 u8 width; // in 8 pixel units on nametable
67 u8 height; // in 8 pixel units on nametable
68 u32 *chrBase;
69 u8 map; // in 2 KiB units on VRAM
70 u8 core; // 0: main; 1: sub
71 u16 mapTileBase;
72 } VWFWindow;
73
74 void vwfWinInit(const VWFWindow *vwf);
75 void vwfWinClear(const VWFWindow *vwf);
76 /**
77 * Sets up a portion of a window.
78 * @param vwf the window
79 * @param l distance in tiles from the left side of the window to the
80 * left side of the area to be updated
81 * @param t distance in tiles from the top of the window to the
82 * top of the area to be updated
83 * @param r distance in tiles from the left side of the window to the
84 * right side of the area to be updated
85 * @param b distance in tiles from the top of the window to the
86 * bottom of the area to be updated
87 * @param orMask the data to be OR'd with each map space, typically
88 * containing a palette number in bits 12 to 15
89 */
90 void vwfPutMap(const VWFWindow *vwf,
91 int l, int t, int r, int b,
92 unsigned int orMask);
93
94 unsigned int vwfPutc(const VWFWindow *w,
95 int c,
96 int x, int y);
97 unsigned int vwfPuts(const VWFWindow *src,
98 const char *str,
99 int x, int y);
100 void vwfRectfill(const VWFWindow *v,
101 int l, int t, int r, int b,
102 int c);
103 void vwfHline(const VWFWindow *v, int l, int t, int r, int c);
104 void vwfVline(const VWFWindow *v, int l, int t, int b, int c);
105 void vwfRect(const VWFWindow *v, int l, int t, int r, int b, int c);
106
107 /**
108 * Replaces a rectangle of pixels in dst with pixels from src.
109 * @param src the bitmap to copy from
110 * @param dst the bitmap to copy to
111 * @param srcX the left side of the part of src to copy,
112 * in 8-pixel units
113 * @param srcY the top of the part of src to copy,
114 * in pixels
115 * @param dstX the left side of the part of dst to be replaced,
116 * in 8-pixel units
117 * @param dstY the top of the part of src dst to be replaced,
118 * in pixels
119 */
120 void vwfBlitAligned(const VWFWindow *src, const VWFWindow *dst,
121 int srcX, int srcY, int dstX, int dstY,
122 int w, int h);
123
124 extern const VWFWindow vwfTop, vwfTouch;
125
126
127 #endif