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