CaryCoders / vt100

My implementation of VT100 ESC-sequence utility

Fork of vt100 by Motoo Tanaka

vt100.cpp@0:94253645a02a, 2014-12-01 (annotated)

Committer:
Rhyme
Date:
Mon Dec 01 12:48:02 2014 +0000
Revision:
0:94253645a02a
The first version with comments;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Rhyme 0:94253645a02a 1 #include "serial_api.h"
Rhyme 0:94253645a02a 2 #include "vt100.h"
Rhyme 0:94253645a02a 3 #include "mbed.h"
Rhyme 0:94253645a02a 4
Rhyme 0:94253645a02a 5 #define BLACK 0
Rhyme 0:94253645a02a 6 #define RED 1
Rhyme 0:94253645a02a 7 #define GREEN 2
Rhyme 0:94253645a02a 8 #define YELLOW 3
Rhyme 0:94253645a02a 9 #define BLUE 4
Rhyme 0:94253645a02a 10 #define PURPLE 5
Rhyme 0:94253645a02a 11 #define CIAN 6
Rhyme 0:94253645a02a 12 #define WHITE 7
Rhyme 0:94253645a02a 13
Rhyme 0:94253645a02a 14 char ESC = '\033' ;
Rhyme 0:94253645a02a 15
Rhyme 0:94253645a02a 16 vt100::vt100(int baud)
Rhyme 0:94253645a02a 17 {
Rhyme 0:94253645a02a 18 extern serial_t stdio_uart ;
Rhyme 0:94253645a02a 19 serial_baud(&stdio_uart, baud) ;
Rhyme 0:94253645a02a 20 }
Rhyme 0:94253645a02a 21
Rhyme 0:94253645a02a 22 vt100::~vt100()
Rhyme 0:94253645a02a 23 {
Rhyme 0:94253645a02a 24 }
Rhyme 0:94253645a02a 25
Rhyme 0:94253645a02a 26 void vt100::cls(void)
Rhyme 0:94253645a02a 27 {
Rhyme 0:94253645a02a 28 printf("%c[2J", ESC) ;
Rhyme 0:94253645a02a 29 locate(1,1) ;
Rhyme 0:94253645a02a 30 }
Rhyme 0:94253645a02a 31
Rhyme 0:94253645a02a 32 void vt100::locate(int x, int y)
Rhyme 0:94253645a02a 33 {
Rhyme 0:94253645a02a 34 printf("%c[%d;%dH",ESC,y,x) ;
Rhyme 0:94253645a02a 35 }
Rhyme 0:94253645a02a 36
Rhyme 0:94253645a02a 37 void vt100::putChar(int x, int y, char c)
Rhyme 0:94253645a02a 38 {
Rhyme 0:94253645a02a 39 locate(x,y) ;
Rhyme 0:94253645a02a 40 printf("%c",c) ;
Rhyme 0:94253645a02a 41 }
Rhyme 0:94253645a02a 42
Rhyme 0:94253645a02a 43 void vt100::putStr(int x, int y, char *str)
Rhyme 0:94253645a02a 44 {
Rhyme 0:94253645a02a 45 locate(x,y) ;
Rhyme 0:94253645a02a 46 printf("%s", str) ;
Rhyme 0:94253645a02a 47 }
Rhyme 0:94253645a02a 48
Rhyme 0:94253645a02a 49 void vt100::line(int x1, int y1, int x2, int y2, char c)
Rhyme 0:94253645a02a 50 {
Rhyme 0:94253645a02a 51 int x, y, dx, dy, w, h, step ;
Rhyme 0:94253645a02a 52 dx = x2 - x1 ;
Rhyme 0:94253645a02a 53 dy = y2 - y1 ;
Rhyme 0:94253645a02a 54 w = (dx >= 0)? dx : -dx ;
Rhyme 0:94253645a02a 55 h = (dy >= 0)? dy : -dy ;
Rhyme 0:94253645a02a 56
Rhyme 0:94253645a02a 57 if (dx == 0) { /* vertical line */
Rhyme 0:94253645a02a 58 step = (dy >= 0) ? 1 : -1 ;
Rhyme 0:94253645a02a 59 for (y = 0 ; y <= h ; y++) {
Rhyme 0:94253645a02a 60 putChar(x1, y1 + (step * y), c) ;
Rhyme 0:94253645a02a 61 }
Rhyme 0:94253645a02a 62 } else if (dy == 0) { /* Horizontal line */
Rhyme 0:94253645a02a 63 step = (dx >= 0) ? 1 : -1 ;
Rhyme 0:94253645a02a 64 for (x = 0 ; x <= w ; x++) {
Rhyme 0:94253645a02a 65 putChar(x1 + (step * x), y1, c) ;
Rhyme 0:94253645a02a 66 }
Rhyme 0:94253645a02a 67 } else {
Rhyme 0:94253645a02a 68 if (w >= h) { /* use x as step */
Rhyme 0:94253645a02a 69 step = (dx >= 0) ? 1 : -1 ;
Rhyme 0:94253645a02a 70 for (x = 0 ; x <= w ; x++ ) {
Rhyme 0:94253645a02a 71 putChar( x1 + step*x, y1 + ((2*x+1) * dy)/(2 * w), c) ;
Rhyme 0:94253645a02a 72 }
Rhyme 0:94253645a02a 73 } else { /* use y as step */
Rhyme 0:94253645a02a 74 step = (dy >= 0) ? 1 : -1 ;
Rhyme 0:94253645a02a 75 for (y = 0 ; y <= h ; y++ ) {
Rhyme 0:94253645a02a 76 putChar( x1 + ((2*y+1) * dx)/(2*h), y1 + step*y, c) ;
Rhyme 0:94253645a02a 77 }
Rhyme 0:94253645a02a 78 }
Rhyme 0:94253645a02a 79 }
Rhyme 0:94253645a02a 80 }
Rhyme 0:94253645a02a 81
Rhyme 0:94253645a02a 82 /****************************************************
Rhyme 0:94253645a02a 83 * frame(x1, y1, x2, y2)
Rhyme 0:94253645a02a 84 * draw textual frame
Rhyme 0:94253645a02a 85 * (x1,y1) (x2,y1)
Rhyme 0:94253645a02a 86 * +--------------------------+
Rhyme 0:94253645a02a 87 * | |
Rhyme 0:94253645a02a 88 * +--------------------------+
Rhyme 0:94253645a02a 89 * (x1,y2) (x2,y2)
Rhyme 0:94253645a02a 90 */
Rhyme 0:94253645a02a 91 void vt100::frame(int x1, int y1, int x2, int y2)
Rhyme 0:94253645a02a 92 {
Rhyme 0:94253645a02a 93 int tmp ;
Rhyme 0:94253645a02a 94 if (x1 > x2) {
Rhyme 0:94253645a02a 95 tmp = x1 ;
Rhyme 0:94253645a02a 96 x1 = x2 ;
Rhyme 0:94253645a02a 97 x2 = tmp ;
Rhyme 0:94253645a02a 98 }
Rhyme 0:94253645a02a 99 if (y1 > y2) {
Rhyme 0:94253645a02a 100 tmp = y1 ;
Rhyme 0:94253645a02a 101 y1 = y2 ;
Rhyme 0:94253645a02a 102 y2 = tmp ;
Rhyme 0:94253645a02a 103 }
Rhyme 0:94253645a02a 104 putChar(x1, y1, '+') ;
Rhyme 0:94253645a02a 105 line(x1+1,y1,x2-1,y1, '-') ;
Rhyme 0:94253645a02a 106 putChar(x2, y1, '+') ;
Rhyme 0:94253645a02a 107 line(x2,y1+1,x2,y2-1, '|') ;
Rhyme 0:94253645a02a 108 putChar(x2, y2, '+') ;
Rhyme 0:94253645a02a 109 line(x2-1,y2,x1+1,y2, '-') ;
Rhyme 0:94253645a02a 110 putChar(x1, y2, '+') ;
Rhyme 0:94253645a02a 111 line(x1,y2-1,x1,y1+1, '|') ;
Rhyme 0:94253645a02a 112 }
Rhyme 0:94253645a02a 113
Rhyme 0:94253645a02a 114 /***************************************************
Rhyme 0:94253645a02a 115 * circle(x, y, r, c)
Rhyme 0:94253645a02a 116 * Based on Jack Elton Bresenham's
Rhyme 0:94253645a02a 117 * Midpoint circle algorithm.
Rhyme 0:94253645a02a 118 * http://en.wikipedia.org/wiki/Midpoint_circle_algorithm
Rhyme 0:94253645a02a 119 */
Rhyme 0:94253645a02a 120 void vt100::circle(int x0, int y0, int r, char c)
Rhyme 0:94253645a02a 121 {
Rhyme 0:94253645a02a 122 int f = 1 - r ;
Rhyme 0:94253645a02a 123 int dFx = 1 ;
Rhyme 0:94253645a02a 124 int dFy = -2 * r ;
Rhyme 0:94253645a02a 125 int x = 0 ;
Rhyme 0:94253645a02a 126 int y = r ;
Rhyme 0:94253645a02a 127
Rhyme 0:94253645a02a 128 putChar(x0, y0 + r, c) ;
Rhyme 0:94253645a02a 129 putChar(x0, y0 - r, c) ;
Rhyme 0:94253645a02a 130 putChar(x0 + 2*r, y0, c) ;
Rhyme 0:94253645a02a 131 putChar(x0 - 2*r, y0, c) ;
Rhyme 0:94253645a02a 132
Rhyme 0:94253645a02a 133 while(x < y) {
Rhyme 0:94253645a02a 134 if (f >= 0) {
Rhyme 0:94253645a02a 135 y-- ;
Rhyme 0:94253645a02a 136 dFy += 2 ;
Rhyme 0:94253645a02a 137 f += dFy ;
Rhyme 0:94253645a02a 138 }
Rhyme 0:94253645a02a 139 x++ ;
Rhyme 0:94253645a02a 140 dFx += 2 ;
Rhyme 0:94253645a02a 141 f += dFx ;
Rhyme 0:94253645a02a 142 putChar(x0 + 2*x, y0 + y, c) ;
Rhyme 0:94253645a02a 143 putChar(x0 - 2*x, y0 + y, c) ;
Rhyme 0:94253645a02a 144 putChar(x0 + 2*x, y0 - y, c) ;
Rhyme 0:94253645a02a 145 putChar(x0 - 2*x, y0 - y, c) ;
Rhyme 0:94253645a02a 146 putChar(x0 + 2*y, y0 + x, c) ;
Rhyme 0:94253645a02a 147 putChar(x0 - 2*y, y0 + x, c) ;
Rhyme 0:94253645a02a 148 putChar(x0 + 2*y, y0 - x, c) ;
Rhyme 0:94253645a02a 149 putChar(x0 - 2*y, y0 - x, c) ;
Rhyme 0:94253645a02a 150 }
Rhyme 0:94253645a02a 151 }
Rhyme 0:94253645a02a 152
Rhyme 0:94253645a02a 153 int vt100::setFG(int newFG)
Rhyme 0:94253645a02a 154 {
Rhyme 0:94253645a02a 155 int oldFG = foreground ;
Rhyme 0:94253645a02a 156 printf("\033[3%dm", newFG) ;
Rhyme 0:94253645a02a 157 foreground = newFG ;
Rhyme 0:94253645a02a 158 return( oldFG ) ;
Rhyme 0:94253645a02a 159 }
Rhyme 0:94253645a02a 160
Rhyme 0:94253645a02a 161 int vt100::getFG()
Rhyme 0:94253645a02a 162 {
Rhyme 0:94253645a02a 163 return( foreground ) ;
Rhyme 0:94253645a02a 164 }
Rhyme 0:94253645a02a 165
Rhyme 0:94253645a02a 166 int vt100::setBG(int newBG)
Rhyme 0:94253645a02a 167 {
Rhyme 0:94253645a02a 168 int oldBG = background ;
Rhyme 0:94253645a02a 169 printf("\033[4%dm", newBG) ;
Rhyme 0:94253645a02a 170 return( oldBG ) ;
Rhyme 0:94253645a02a 171 }
Rhyme 0:94253645a02a 172
Rhyme 0:94253645a02a 173 int vt100::getBG()
Rhyme 0:94253645a02a 174 {
Rhyme 0:94253645a02a 175 return( background ) ;
Rhyme 0:94253645a02a 176 }
Rhyme 0:94253645a02a 177
Rhyme 0:94253645a02a 178 void vt100::black()
Rhyme 0:94253645a02a 179 {
Rhyme 0:94253645a02a 180 setFG( BLACK ) ;
Rhyme 0:94253645a02a 181 }
Rhyme 0:94253645a02a 182
Rhyme 0:94253645a02a 183 void vt100::red()
Rhyme 0:94253645a02a 184 {
Rhyme 0:94253645a02a 185 setFG( RED ) ;
Rhyme 0:94253645a02a 186 }
Rhyme 0:94253645a02a 187
Rhyme 0:94253645a02a 188 void vt100::green()
Rhyme 0:94253645a02a 189 {
Rhyme 0:94253645a02a 190 setFG( GREEN ) ;
Rhyme 0:94253645a02a 191 }
Rhyme 0:94253645a02a 192
Rhyme 0:94253645a02a 193 void vt100::yellow()
Rhyme 0:94253645a02a 194 {
Rhyme 0:94253645a02a 195 setFG( YELLOW ) ;
Rhyme 0:94253645a02a 196 }
Rhyme 0:94253645a02a 197
Rhyme 0:94253645a02a 198 void vt100::blue()
Rhyme 0:94253645a02a 199 {
Rhyme 0:94253645a02a 200 setFG( BLUE ) ;
Rhyme 0:94253645a02a 201 }
Rhyme 0:94253645a02a 202
Rhyme 0:94253645a02a 203 void vt100::purple()
Rhyme 0:94253645a02a 204 {
Rhyme 0:94253645a02a 205 setFG( PURPLE ) ;
Rhyme 0:94253645a02a 206 }
Rhyme 0:94253645a02a 207
Rhyme 0:94253645a02a 208 void vt100::cian()
Rhyme 0:94253645a02a 209 {
Rhyme 0:94253645a02a 210 setFG( CIAN ) ;
Rhyme 0:94253645a02a 211 }
Rhyme 0:94253645a02a 212
Rhyme 0:94253645a02a 213 void vt100::white()
Rhyme 0:94253645a02a 214 {
Rhyme 0:94253645a02a 215 setFG( WHITE ) ;
Rhyme 0:94253645a02a 216 }