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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 3 | mjames | 1 | /* |
| 2 | * Font.c |
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| 3 | |||
| 4 | * |
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| 5 | * Created on: 20 Dec 2015 |
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| 6 | * Author: Mike |
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| 7 | */ |
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| 8 | #include <stdint.h> |
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| 9 | #include <string.h> |
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| 9 | mjames | 10 | #include "Font.h" |
| 3 | mjames | 11 | #include "ap_math.h" |
| 12 | #include "SSD1306.h" |
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| 13 | |||
| 14 | |||
| 9 | mjames | 15 | // the Lucida font is on a x10 y18 grid |
| 16 | #define FONTX 10 |
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| 17 | #define FONTY 18 |
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| 3 | mjames | 18 | |
| 19 | #include "ascii-lucida.h" |
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| 20 | |||
| 9 | mjames | 21 | // this gets the pixel for position x,y in character c |
| 22 | uint8_t get_font_pixel(uint16_t x, uint16_t y, uint8_t c) |
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| 23 | { |
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| 24 | if(c<32) |
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| 25 | c= 32; |
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| 3 | mjames | 26 | |
| 9 | mjames | 27 | x = x+FONTX*(c-32); |
| 28 | return ((ascii_lucida_bits[(y*ascii_lucida_width)/8+(x/8)])>>(x&7)) & 1 ; |
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| 29 | } |
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| 3 | mjames | 30 | |
| 31 | |||
| 32 | |||
| 9 | mjames | 33 | uint8_t cursor_x; |
| 34 | uint8_t cursor_y; |
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| 3 | mjames | 35 | |
| 36 | |||
| 37 | |||
| 38 | |||
| 39 | void font_gotoxy(uint8_t x,uint8_t y) |
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| 40 | { |
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| 41 | cursor_x=x; |
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| 42 | cursor_y=y; |
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| 43 | } |
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| 44 | |||
| 45 | |||
| 46 | |||
| 47 | |||
| 9 | mjames | 48 | void font_puts(uint8_t * s) |
| 49 | { |
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| 50 | print_scaled_string(s,cursor_x,cursor_y,strlen(s),384); |
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| 3 | mjames | 51 | |
| 52 | |||
| 53 | |||
| 54 | } |
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| 55 | |||
| 56 | |||
| 57 | |||
| 58 | |||
| 59 | static uint8_t format_num(char * buff, uint8_t digits,uint8_t dp_pos,int val) |
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| 60 | { |
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| 61 | digits++; |
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| 62 | uint8_t pos = digits; |
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| 63 | uint8_t dp_loc = pos - dp_pos; |
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| 64 | uint8_t sign = 0; |
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| 65 | if(val<0) |
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| 66 | { |
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| 67 | sign = 1; |
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| 68 | val = -val; |
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| 69 | } |
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| 70 | |||
| 71 | buff[pos]=0; |
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| 72 | while (pos) |
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| 73 | { |
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| 74 | if(pos == dp_loc ) |
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| 75 | { |
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| 76 | buff[--pos]='.'; |
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| 77 | } |
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| 78 | else |
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| 79 | { |
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| 80 | buff[--pos] = val%10 + '0'; |
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| 81 | val/=10; |
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| 82 | if(val==0 && pos< dp_loc) |
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| 83 | break; |
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| 84 | } |
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| 85 | } |
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| 86 | if(sign) |
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| 87 | { |
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| 88 | buff[--pos] = '-'; |
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| 89 | } |
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| 90 | return digits; |
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| 91 | } |
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| 92 | |||
| 93 | |||
| 94 | void font_digits( uint8_t digits,uint8_t dp_pos, int val) |
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| 95 | { |
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| 96 | char buff[10] = " "; |
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| 97 | uint8_t len = format_num(buff, digits,dp_pos,val); |
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| 98 | font_puts(buff); |
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| 99 | } |
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| 100 | |||
| 101 | |||
| 102 | void font_sig_digits(uint8_t x, uint8_t y,uint8_t right_justify,uint8_t dp_pos, int val) |
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| 103 | { |
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| 104 | char digits; |
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| 105 | char sign = 0; |
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| 106 | int uval; |
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| 107 | if (val < 0) |
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| 108 | { |
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| 109 | uval = -val; |
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| 110 | sign = 1; // mark as negative |
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| 111 | } |
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| 112 | else |
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| 113 | { |
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| 114 | uval = val; |
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| 115 | } |
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| 116 | if(uval<10) // always one digit for a sign or space, one for a digit |
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| 117 | { |
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| 118 | digits = 1; |
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| 119 | } |
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| 120 | if(uval>=10 && uval <100) |
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| 121 | { |
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| 122 | digits = 2; |
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| 123 | } |
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| 124 | if(uval>=100 && uval < 1000) |
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| 125 | { |
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| 126 | digits =3; |
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| 127 | } |
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| 128 | if(uval>=1000) |
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| 129 | { |
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| 130 | digits=4; |
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| 131 | } |
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| 132 | // backup for the - sign if right justified |
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| 133 | if(right_justify) |
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| 134 | { |
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| 135 | if(dp_pos<10) |
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| 136 | { |
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| 137 | digits+=2; |
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| 138 | } |
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| 139 | else |
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| 140 | { |
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| 141 | digits+=1; |
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| 142 | } |
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| 143 | x-=(digits); |
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| 144 | } |
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| 145 | |||
| 146 | |||
| 147 | font_gotoxy(x,y); |
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| 148 | font_digits(digits,dp_pos,val); |
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| 149 | } |
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| 150 | |||
| 151 | |||
| 152 | |||
| 153 | void scan_xbm(void) |
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| 154 | { |
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| 155 | |||
| 156 | int i,j; |
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| 157 | |||
| 158 | for(i=0; i< FONTY;i++) |
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| 159 | { |
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| 160 | for(j=0;j<FONTX*6;j++) |
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| 161 | { |
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| 9 | mjames | 162 | drawPixel(j, i, get_font_pixel(j,i,'A')) ; |
| 3 | mjames | 163 | } |
| 164 | } |
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| 165 | } |
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| 166 | |||
| 9 | mjames | 167 | |
| 168 | // scale is multiplied by 256 |
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| 169 | void print_scaled_string(char * string, int x, int y, int digits,int scale ) |
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| 3 | mjames | 170 | { |
| 9 | mjames | 171 | int xt,yt,jt; |
| 172 | cursor_y = y; |
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| 173 | for(yt=0;yt<FONTY*256;yt+=scale) // iterate down scan lines |
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| 3 | mjames | 174 | { |
| 9 | mjames | 175 | // iterate along the string |
| 176 | // local x plotting coordinate |
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| 177 | cursor_x = x; |
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| 178 | for(xt=0;xt<digits;xt++) |
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| 3 | mjames | 179 | { |
| 9 | mjames | 180 | for(jt=0;jt<FONTX*256;jt+=scale) |
| 3 | mjames | 181 | { |
| 182 | unsigned char c = (string[xt] & 0x7F); |
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| 9 | mjames | 183 | drawPixel(cursor_x, cursor_y, get_font_pixel(jt/256,yt/256,c)) ; |
| 184 | cursor_x++; |
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| 3 | mjames | 185 | } |
| 186 | } |
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| 9 | mjames | 187 | cursor_y++; |
| 3 | mjames | 188 | } |
| 9 | mjames | 189 | if(cursor_x > width()) |
| 190 | { |
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| 191 | cursor_x = 0; |
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| 192 | } |
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| 3 | mjames | 193 | } |
| 194 | |||
| 9 | mjames | 195 | |
| 196 | |||
| 197 | |||
| 198 | |||
| 199 | |||
| 3 | mjames | 200 | void print_digits(uint8_t x, uint8_t y, uint8_t digits,uint8_t dp_pos, int val) |
| 201 | { |
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| 202 | |||
| 203 | |||
| 204 | char buff[10] = " "; |
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| 205 | uint8_t len = format_num(buff, digits,dp_pos,val); |
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| 9 | mjames | 206 | print_scaled_string(buff,x,y,len,256); |
| 3 | mjames | 207 | } |
| 208 | |||
| 209 | |||
| 210 | |||
| 211 | |||
| 212 | |||
| 213 | |||
| 214 | /* print a digit value 0 to 9 (not ASCII) rotated by ang */ |
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| 215 | void print_rotated(uint8_t x, uint8_t y, int ang, uint8_t val) |
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| 216 | { |
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| 217 | int co=ap_cos(ang); |
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| 218 | int si=ap_sin(ang); |
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| 219 | |||
| 220 | int xt,yt; |
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| 221 | |||
| 222 | for(yt=0;yt<FONTY;yt++) // iterate down scan lines |
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| 223 | { |
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| 224 | for(xt=0;xt<FONTX;xt++) |
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| 225 | { |
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| 9 | mjames | 226 | if(get_font_pixel(xt,yt,val+'0')) |
| 3 | mjames | 227 | { |
| 228 | int cx = xt-FONTX/2; |
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| 229 | int cy = yt-FONTY/2; |
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| 230 | |||
| 231 | int px = AP_SCALE(cx*co - cy*si); |
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| 232 | int py = AP_SCALE(cx*si + cy*co); |
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| 233 | |||
| 234 | drawPixel(x+px, y+py,WHITE) ; |
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| 235 | } |
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| 236 | } |
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| 237 | } |
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| 238 | |||
| 239 | |||
| 240 | |||
| 241 | |||
| 242 | |||
| 243 | } |
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| 244 | |||
| 245 | |||
| 246 | |||
| 247 |