EmbeddedArtists AB / Mbed 2 deprecated lpc4088_ebb_gui_emwin

Graphical demo for the LPC4088 Experiment Base Board with one of the Display Expansion Kits. This program displays how to use the emWin library from Segger.

Dependencies:   EALib ewgui mbed

This program requires the emWin library. Instructions and more information.

Graphics.cpp@0:7f5765fcd048, 2015-07-14 (annotated)

Committer:
embeddedartists
Date:
Tue Jul 14 11:34:15 2015 +0000
Revision:
0:7f5765fcd048
First version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
embeddedartists 0:7f5765fcd048 1
embeddedartists 0:7f5765fcd048 2 #include "mbed.h"
embeddedartists 0:7f5765fcd048 3 #include "Graphics.h"
embeddedartists 0:7f5765fcd048 4
embeddedartists 0:7f5765fcd048 5
embeddedartists 0:7f5765fcd048 6 Graphics::Graphics(uint16_t *pFrmBuf, uint16_t dispWidth, uint16_t dispHeight)
embeddedartists 0:7f5765fcd048 7 {
embeddedartists 0:7f5765fcd048 8 this->windowX = dispWidth;
embeddedartists 0:7f5765fcd048 9 this->windowY = dispHeight;
embeddedartists 0:7f5765fcd048 10 this->pFrmBuf = pFrmBuf;
embeddedartists 0:7f5765fcd048 11 }
embeddedartists 0:7f5765fcd048 12
embeddedartists 0:7f5765fcd048 13 void Graphics::setFrameBuffer( uint16_t *pFrmBuf )
embeddedartists 0:7f5765fcd048 14 {
embeddedartists 0:7f5765fcd048 15 this->pFrmBuf = pFrmBuf;
embeddedartists 0:7f5765fcd048 16 }
embeddedartists 0:7f5765fcd048 17
embeddedartists 0:7f5765fcd048 18 int32_t Graphics::abs(int32_t v1) const
embeddedartists 0:7f5765fcd048 19 {
embeddedartists 0:7f5765fcd048 20 if (v1 > 0)
embeddedartists 0:7f5765fcd048 21 return v1;
embeddedartists 0:7f5765fcd048 22
embeddedartists 0:7f5765fcd048 23 return -v1;
embeddedartists 0:7f5765fcd048 24 }
embeddedartists 0:7f5765fcd048 25
embeddedartists 0:7f5765fcd048 26 /***********************************************************************
embeddedartists 0:7f5765fcd048 27 *
embeddedartists 0:7f5765fcd048 28 * Function: swim_put_line_raw
embeddedartists 0:7f5765fcd048 29 *
embeddedartists 0:7f5765fcd048 30 * Purpose: Draw a line on the physical display
embeddedartists 0:7f5765fcd048 31 *
embeddedartists 0:7f5765fcd048 32 * Processing:
embeddedartists 0:7f5765fcd048 33 * See function.
embeddedartists 0:7f5765fcd048 34 *
embeddedartists 0:7f5765fcd048 35 * Parameters:
embeddedartists 0:7f5765fcd048 36 * win : Window identifier
embeddedartists 0:7f5765fcd048 37 * x1 : Physical X position of X line start
embeddedartists 0:7f5765fcd048 38 * y1 : Physical Y position of Y line start
embeddedartists 0:7f5765fcd048 39 * x2 : Physical X position of X line end
embeddedartists 0:7f5765fcd048 40 * y2 : Physical Y position of Y line end
embeddedartists 0:7f5765fcd048 41 *
embeddedartists 0:7f5765fcd048 42 * Outputs: None
embeddedartists 0:7f5765fcd048 43 *
embeddedartists 0:7f5765fcd048 44 * Returns: Nothing
embeddedartists 0:7f5765fcd048 45 *
embeddedartists 0:7f5765fcd048 46 * Notes: None
embeddedartists 0:7f5765fcd048 47 *
embeddedartists 0:7f5765fcd048 48 **********************************************************************/
embeddedartists 0:7f5765fcd048 49 void Graphics::put_line(int32_t x1, int32_t y1, int32_t x2, int32_t y2, int16_t color)
embeddedartists 0:7f5765fcd048 50 {
embeddedartists 0:7f5765fcd048 51 int32_t e2, sx, sy, dx, dy, err;
embeddedartists 0:7f5765fcd048 52
embeddedartists 0:7f5765fcd048 53 /* calculate delta_x and delta_y */
embeddedartists 0:7f5765fcd048 54 dx = abs(x2 - x1);
embeddedartists 0:7f5765fcd048 55 dy = abs(y2 - y1);
embeddedartists 0:7f5765fcd048 56
embeddedartists 0:7f5765fcd048 57 /* set the direction for the step for both x and y, and
embeddedartists 0:7f5765fcd048 58 initialize the error */
embeddedartists 0:7f5765fcd048 59 if (x1 < x2)
embeddedartists 0:7f5765fcd048 60 sx = 1;
embeddedartists 0:7f5765fcd048 61 else
embeddedartists 0:7f5765fcd048 62 sx = -1;
embeddedartists 0:7f5765fcd048 63
embeddedartists 0:7f5765fcd048 64 if (y1 < y2)
embeddedartists 0:7f5765fcd048 65 sy = 1;
embeddedartists 0:7f5765fcd048 66 else
embeddedartists 0:7f5765fcd048 67 sy = -1;
embeddedartists 0:7f5765fcd048 68
embeddedartists 0:7f5765fcd048 69 err = dx - dy;
embeddedartists 0:7f5765fcd048 70
embeddedartists 0:7f5765fcd048 71 while (1)
embeddedartists 0:7f5765fcd048 72 {
embeddedartists 0:7f5765fcd048 73 if ((x1 >= 0) && (x1 < this->windowX) &&
embeddedartists 0:7f5765fcd048 74 (y1 >= 0) && (y1 < this->windowY))
embeddedartists 0:7f5765fcd048 75 this->pFrmBuf[x1 + (this->windowX*y1)] = color;
embeddedartists 0:7f5765fcd048 76
embeddedartists 0:7f5765fcd048 77 if ((x1 == x2) && (y1 == y2))
embeddedartists 0:7f5765fcd048 78 return;
embeddedartists 0:7f5765fcd048 79
embeddedartists 0:7f5765fcd048 80 e2 = 2 * err;
embeddedartists 0:7f5765fcd048 81 if (e2 > -dy)
embeddedartists 0:7f5765fcd048 82 {
embeddedartists 0:7f5765fcd048 83 err -= dy;
embeddedartists 0:7f5765fcd048 84 x1 += sx;
embeddedartists 0:7f5765fcd048 85 }
embeddedartists 0:7f5765fcd048 86 if (e2 < dx)
embeddedartists 0:7f5765fcd048 87 {
embeddedartists 0:7f5765fcd048 88 err += dx;
embeddedartists 0:7f5765fcd048 89 y1 += sy;
embeddedartists 0:7f5765fcd048 90 }
embeddedartists 0:7f5765fcd048 91 }
embeddedartists 0:7f5765fcd048 92 }
embeddedartists 0:7f5765fcd048 93
embeddedartists 0:7f5765fcd048 94 /***********************************************************************
embeddedartists 0:7f5765fcd048 95 *
embeddedartists 0:7f5765fcd048 96 * Function: plot4points
embeddedartists 0:7f5765fcd048 97 *
embeddedartists 0:7f5765fcd048 98 * Purpose:
embeddedartists 0:7f5765fcd048 99 *
embeddedartists 0:7f5765fcd048 100 * Processing:
embeddedartists 0:7f5765fcd048 101 * See function.
embeddedartists 0:7f5765fcd048 102 *
embeddedartists 0:7f5765fcd048 103 * Parameters:
embeddedartists 0:7f5765fcd048 104 * win : Window identifier
embeddedartists 0:7f5765fcd048 105 * cx :
embeddedartists 0:7f5765fcd048 106 * cy :
embeddedartists 0:7f5765fcd048 107 * x :
embeddedartists 0:7f5765fcd048 108 * y :
embeddedartists 0:7f5765fcd048 109 * Filled :
embeddedartists 0:7f5765fcd048 110 *
embeddedartists 0:7f5765fcd048 111 * Outputs: None
embeddedartists 0:7f5765fcd048 112 *
embeddedartists 0:7f5765fcd048 113 * Returns: Nothing
embeddedartists 0:7f5765fcd048 114 *
embeddedartists 0:7f5765fcd048 115 * Notes: None
embeddedartists 0:7f5765fcd048 116 *
embeddedartists 0:7f5765fcd048 117 **********************************************************************/
embeddedartists 0:7f5765fcd048 118 void Graphics::plot4points( int32_t cx, int32_t cy, int32_t x, int32_t y, int16_t color, int32_t Filled )
embeddedartists 0:7f5765fcd048 119 {
embeddedartists 0:7f5765fcd048 120 int16_t x0, x1, y0, y1;
embeddedartists 0:7f5765fcd048 121
embeddedartists 0:7f5765fcd048 122 y0 = cy + y;
embeddedartists 0:7f5765fcd048 123 y1 = cy - y;
embeddedartists 0:7f5765fcd048 124 if( Filled )
embeddedartists 0:7f5765fcd048 125 {
embeddedartists 0:7f5765fcd048 126 for( x0=cx - x; x0<=cx + x; x0++ )
embeddedartists 0:7f5765fcd048 127 {
embeddedartists 0:7f5765fcd048 128 if ((x0>=0) && (x0<this->windowX) && (y0>=0) && (y0<this->windowY))
embeddedartists 0:7f5765fcd048 129 this->pFrmBuf[x0 + (this->windowX*y0)] = color;
embeddedartists 0:7f5765fcd048 130 if ((x0>=0) && (x0<this->windowX) && (y1>=0) && (y1<this->windowY))
embeddedartists 0:7f5765fcd048 131 this->pFrmBuf[x0 + (this->windowX*y1)] = color;
embeddedartists 0:7f5765fcd048 132 }
embeddedartists 0:7f5765fcd048 133 }
embeddedartists 0:7f5765fcd048 134 else
embeddedartists 0:7f5765fcd048 135 {
embeddedartists 0:7f5765fcd048 136 x0 = cx + x;
embeddedartists 0:7f5765fcd048 137 x1 = cx - x;
embeddedartists 0:7f5765fcd048 138 if ((x0>=0) && (x0<this->windowX) && (y0>=0) && (y0<this->windowY))
embeddedartists 0:7f5765fcd048 139 this->pFrmBuf[x0 + (this->windowX*y0)] = color;
embeddedartists 0:7f5765fcd048 140 if ((x != 0) &&
embeddedartists 0:7f5765fcd048 141 (x1>=0) && (x1<this->windowX) && (y0>=0) && (y0<this->windowY))
embeddedartists 0:7f5765fcd048 142 this->pFrmBuf[x1 + (this->windowX*y0)] = color;
embeddedartists 0:7f5765fcd048 143 if ((y != 0) &&
embeddedartists 0:7f5765fcd048 144 (x0>=0) && (x0<this->windowX) && (y1>=0) && (y1<this->windowY))
embeddedartists 0:7f5765fcd048 145 this->pFrmBuf[x0 + (this->windowX*y1)] = color;
embeddedartists 0:7f5765fcd048 146 if ((x != 0 && y != 0) &&
embeddedartists 0:7f5765fcd048 147 (x1>=0) && (x1<this->windowX) && (y1>=0) && (y1<this->windowY))
embeddedartists 0:7f5765fcd048 148 this->pFrmBuf[x1 + (this->windowX*y1)] = color;
embeddedartists 0:7f5765fcd048 149 }
embeddedartists 0:7f5765fcd048 150 }
embeddedartists 0:7f5765fcd048 151
embeddedartists 0:7f5765fcd048 152 /***********************************************************************
embeddedartists 0:7f5765fcd048 153 *
embeddedartists 0:7f5765fcd048 154 * Function: plot8points
embeddedartists 0:7f5765fcd048 155 *
embeddedartists 0:7f5765fcd048 156 * Purpose:
embeddedartists 0:7f5765fcd048 157 *
embeddedartists 0:7f5765fcd048 158 * Processing:
embeddedartists 0:7f5765fcd048 159 * See function.
embeddedartists 0:7f5765fcd048 160 *
embeddedartists 0:7f5765fcd048 161 * Parameters:
embeddedartists 0:7f5765fcd048 162 * win : Window identifier
embeddedartists 0:7f5765fcd048 163 * cx :
embeddedartists 0:7f5765fcd048 164 * cy :
embeddedartists 0:7f5765fcd048 165 * x :
embeddedartists 0:7f5765fcd048 166 * y :
embeddedartists 0:7f5765fcd048 167 * Filled :
embeddedartists 0:7f5765fcd048 168 *
embeddedartists 0:7f5765fcd048 169 * Outputs: None
embeddedartists 0:7f5765fcd048 170 *
embeddedartists 0:7f5765fcd048 171 * Returns: Nothing
embeddedartists 0:7f5765fcd048 172 *
embeddedartists 0:7f5765fcd048 173 * Notes: None
embeddedartists 0:7f5765fcd048 174 *
embeddedartists 0:7f5765fcd048 175 **********************************************************************/
embeddedartists 0:7f5765fcd048 176 void Graphics::plot8points( int32_t cx, int32_t cy, int32_t x, int32_t y, int16_t color, int32_t Filled )
embeddedartists 0:7f5765fcd048 177 {
embeddedartists 0:7f5765fcd048 178 plot4points( cx, cy, x, y, color, Filled );
embeddedartists 0:7f5765fcd048 179 if (x != y)
embeddedartists 0:7f5765fcd048 180 plot4points( cx, cy, y, x, color, Filled );
embeddedartists 0:7f5765fcd048 181 }
embeddedartists 0:7f5765fcd048 182
embeddedartists 0:7f5765fcd048 183 /***********************************************************************
embeddedartists 0:7f5765fcd048 184 *
embeddedartists 0:7f5765fcd048 185 * Function: swim_put_circle
embeddedartists 0:7f5765fcd048 186 *
embeddedartists 0:7f5765fcd048 187 * Purpose:
embeddedartists 0:7f5765fcd048 188 *
embeddedartists 0:7f5765fcd048 189 * Processing:
embeddedartists 0:7f5765fcd048 190 * See function.
embeddedartists 0:7f5765fcd048 191 *
embeddedartists 0:7f5765fcd048 192 * Parameters:
embeddedartists 0:7f5765fcd048 193 * win : Window identifier
embeddedartists 0:7f5765fcd048 194 * cx :
embeddedartists 0:7f5765fcd048 195 * cy :
embeddedartists 0:7f5765fcd048 196 * radius :
embeddedartists 0:7f5765fcd048 197 * Filled :
embeddedartists 0:7f5765fcd048 198 *
embeddedartists 0:7f5765fcd048 199 * Outputs: None
embeddedartists 0:7f5765fcd048 200 *
embeddedartists 0:7f5765fcd048 201 * Returns: Nothing
embeddedartists 0:7f5765fcd048 202 *
embeddedartists 0:7f5765fcd048 203 * Notes: None
embeddedartists 0:7f5765fcd048 204 *
embeddedartists 0:7f5765fcd048 205 **********************************************************************/
embeddedartists 0:7f5765fcd048 206 void Graphics::put_circle( int32_t cx, int32_t cy, int16_t color, int32_t radius, int32_t Filled )
embeddedartists 0:7f5765fcd048 207 {
embeddedartists 0:7f5765fcd048 208 int32_t Error = -radius;
embeddedartists 0:7f5765fcd048 209 int16_t x = radius;
embeddedartists 0:7f5765fcd048 210 int16_t y = 0;
embeddedartists 0:7f5765fcd048 211
embeddedartists 0:7f5765fcd048 212 while( x >= y )
embeddedartists 0:7f5765fcd048 213 {
embeddedartists 0:7f5765fcd048 214 plot8points( cx, cy, x, y, color, Filled );
embeddedartists 0:7f5765fcd048 215
embeddedartists 0:7f5765fcd048 216 Error += y;
embeddedartists 0:7f5765fcd048 217 ++y;
embeddedartists 0:7f5765fcd048 218 Error += y;
embeddedartists 0:7f5765fcd048 219
embeddedartists 0:7f5765fcd048 220 if( Error >= 0 )
embeddedartists 0:7f5765fcd048 221 {
embeddedartists 0:7f5765fcd048 222 --x;
embeddedartists 0:7f5765fcd048 223 Error -= x;
embeddedartists 0:7f5765fcd048 224 Error -= x;
embeddedartists 0:7f5765fcd048 225 }
embeddedartists 0:7f5765fcd048 226 }
embeddedartists 0:7f5765fcd048 227 }
embeddedartists 0:7f5765fcd048 228
embeddedartists 0:7f5765fcd048 229 void Graphics::put_dot( int32_t cx, int32_t cy, int16_t color )
embeddedartists 0:7f5765fcd048 230 {
embeddedartists 0:7f5765fcd048 231 int size = 1;
embeddedartists 0:7f5765fcd048 232 for (int y1 = cy - size; y1 <= (cy + size); y1++) {
embeddedartists 0:7f5765fcd048 233 for (int x1 = cx - size; x1 <= (cx + size); x1++) {
embeddedartists 0:7f5765fcd048 234 if ((x1 >= 0) && (x1 < this->windowX) && (y1 >= 0) && (y1 < this->windowY)) {
embeddedartists 0:7f5765fcd048 235 this->pFrmBuf[x1 + (this->windowX*y1)] = color;
embeddedartists 0:7f5765fcd048 236 }
embeddedartists 0:7f5765fcd048 237 }
embeddedartists 0:7f5765fcd048 238 }
embeddedartists 0:7f5765fcd048 239 }
embeddedartists 0:7f5765fcd048 240
embeddedartists 0:7f5765fcd048 241
embeddedartists 0:7f5765fcd048 242
embeddedartists 0:7f5765fcd048 243