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