Juergen M / RGB_OLED_SSD1331 Featured

Driver for the Seeedstudio RGB OLED module for the xadow M0

src/SGL.cpp@8:ff74bd4d94d6, 2015-11-17 (annotated)

Committer:
messi1
Date:
Tue Nov 17 08:43:15 2015 +0000
Revision:
8:ff74bd4d94d6
Parent:
4:1707ca53e7d5
Child:
10:ef7440718431
Improved SGL class; Add new drawLine function and fillScreen function to the SSD1331 driver

Who changed what in which revision?

UserRevisionLine numberNew contents of line
messi1 0:6e810b5b40a3 1 /*
messi1 0:6e810b5b40a3 2 * SGL.cpp
messi1 0:6e810b5b40a3 3 * A library for Seeed Graphical library
messi1 0:6e810b5b40a3 4 *
messi1 0:6e810b5b40a3 5 * Copyright (c) 2014 seeed technology inc.
messi1 0:6e810b5b40a3 6 * Author : lawliet.zou(lawliet.zou@gmail.com)
messi1 0:6e810b5b40a3 7 * Create Time : Jun 06, 2014
messi1 0:6e810b5b40a3 8 * Change Log :
messi1 0:6e810b5b40a3 9 *
messi1 0:6e810b5b40a3 10 * The MIT License (MIT)
messi1 0:6e810b5b40a3 11 *
messi1 0:6e810b5b40a3 12 * Permission is hereby granted, free of charge, to any person obtaining a copy
messi1 0:6e810b5b40a3 13 * of this software and associated documentation files (the "Software"), to deal
messi1 0:6e810b5b40a3 14 * in the Software without restriction, including without limitation the rights
messi1 0:6e810b5b40a3 15 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
messi1 0:6e810b5b40a3 16 * copies of the Software, and to permit persons to whom the Software is
messi1 0:6e810b5b40a3 17 * furnished to do so, subject to the following conditions:
messi1 0:6e810b5b40a3 18 *
messi1 0:6e810b5b40a3 19 * The above copyright notice and this permission notice shall be included in
messi1 0:6e810b5b40a3 20 * all copies or substantial portions of the Software.
messi1 0:6e810b5b40a3 21 *
messi1 0:6e810b5b40a3 22 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
messi1 0:6e810b5b40a3 23 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
messi1 0:6e810b5b40a3 24 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
messi1 0:6e810b5b40a3 25 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
messi1 0:6e810b5b40a3 26 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
messi1 0:6e810b5b40a3 27 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
messi1 0:6e810b5b40a3 28 * THE SOFTWARE.
messi1 0:6e810b5b40a3 29 */
messi1 0:6e810b5b40a3 30 #include <stdlib.h>
messi1 0:6e810b5b40a3 31 #include "SGL.h"
messi1 0:6e810b5b40a3 32
messi1 8:ff74bd4d94d6 33 //---------------------------------------------------------------------------------------
messi1 8:ff74bd4d94d6 34 SGL::SGL(uint8_t width, uint8_t height)
messi1 0:6e810b5b40a3 35 {
messi1 8:ff74bd4d94d6 36 _width = width;
messi1 0:6e810b5b40a3 37 _height = height;
messi1 0:6e810b5b40a3 38 }
messi1 0:6e810b5b40a3 39
messi1 8:ff74bd4d94d6 40 //---------------------------------------------------------------------------------------
messi1 4:1707ca53e7d5 41 void SGL::drawLine(uint8_t x0, uint8_t y0, uint8_t x1, uint8_t y1, uint16_t color)
messi1 0:6e810b5b40a3 42 {
messi1 4:1707ca53e7d5 43 uint8_t x = x1-x0;
messi1 4:1707ca53e7d5 44 uint8_t y = y1-y0;
messi1 4:1707ca53e7d5 45 uint8_t dx = abs(x), sx = x0<x1 ? 1 : -1;
messi1 4:1707ca53e7d5 46 uint8_t dy = -abs(y), sy = y0<y1 ? 1 : -1;
messi1 4:1707ca53e7d5 47 uint8_t err = dx+dy, e2;
messi1 0:6e810b5b40a3 48 for (;;){
messi1 4:1707ca53e7d5 49 drawPixel(x0, y0,color);
messi1 0:6e810b5b40a3 50 e2 = 2*err;
messi1 0:6e810b5b40a3 51 if (e2 >= dy) {
messi1 0:6e810b5b40a3 52 if (x0 == x1) break;
messi1 0:6e810b5b40a3 53 err += dy; x0 += sx;
messi1 0:6e810b5b40a3 54 }
messi1 0:6e810b5b40a3 55 if (e2 <= dx) {
messi1 0:6e810b5b40a3 56 if (y0 == y1) break;
messi1 0:6e810b5b40a3 57 err += dx; y0 += sy;
messi1 0:6e810b5b40a3 58 }
messi1 0:6e810b5b40a3 59 }
messi1 0:6e810b5b40a3 60 }
messi1 0:6e810b5b40a3 61
messi1 8:ff74bd4d94d6 62 //---------------------------------------------------------------------------------------
messi1 8:ff74bd4d94d6 63 void SGL::drawVLine(uint8_t x, uint8_t y, uint8_t length,uint16_t color)
messi1 0:6e810b5b40a3 64 {
messi1 8:ff74bd4d94d6 65 uint8_t y1 = MIN(y+length,_height-1);
messi1 8:ff74bd4d94d6 66 for(uint8_t i = y; i < y1; ++i){
messi1 8:ff74bd4d94d6 67 drawPixel(x, i, color);
messi1 0:6e810b5b40a3 68 }
messi1 0:6e810b5b40a3 69 }
messi1 0:6e810b5b40a3 70
messi1 8:ff74bd4d94d6 71 //---------------------------------------------------------------------------------------
messi1 8:ff74bd4d94d6 72 void SGL::drawHLine(uint8_t x, uint8_t y, uint8_t length, uint16_t color)
messi1 0:6e810b5b40a3 73 {
messi1 8:ff74bd4d94d6 74 uint8_t x1 = MIN(x+length,_width-1);
messi1 8:ff74bd4d94d6 75 for(uint8_t i = x; i < x1; ++i){
messi1 8:ff74bd4d94d6 76 drawPixel(i, y, color);
messi1 0:6e810b5b40a3 77 }
messi1 0:6e810b5b40a3 78 }
messi1 0:6e810b5b40a3 79
messi1 8:ff74bd4d94d6 80 //---------------------------------------------------------------------------------------
messi1 8:ff74bd4d94d6 81 void SGL::drawRect(uint8_t x, uint8_t y, uint8_t width, uint8_t height, uint16_t color)
messi1 0:6e810b5b40a3 82 {
messi1 8:ff74bd4d94d6 83 drawHLine(x, y, width, color);
messi1 8:ff74bd4d94d6 84 drawHLine(x, y+height, width, color);
messi1 8:ff74bd4d94d6 85 drawVLine(x, y, height, color);
messi1 8:ff74bd4d94d6 86 drawVLine(x+width, y, height, color);
messi1 0:6e810b5b40a3 87 }
messi1 0:6e810b5b40a3 88
messi1 8:ff74bd4d94d6 89 //---------------------------------------------------------------------------------------
messi1 8:ff74bd4d94d6 90 void SGL::fillRect(uint8_t x, uint8_t y, uint8_t width, uint8_t height, uint16_t color)
messi1 0:6e810b5b40a3 91 {
messi1 8:ff74bd4d94d6 92 for(uint8_t i = 0; i < height; ++i){
messi1 8:ff74bd4d94d6 93 for(uint8_t j = 0; j < width; ++j){
messi1 8:ff74bd4d94d6 94 drawPixel( x+j, y+i, color);
messi1 0:6e810b5b40a3 95 }
messi1 0:6e810b5b40a3 96 }
messi1 0:6e810b5b40a3 97 }
messi1 0:6e810b5b40a3 98
messi1 8:ff74bd4d94d6 99 //---------------------------------------------------------------------------------------
messi1 8:ff74bd4d94d6 100 void SGL::drawCircle(uint8_t poX, uint8_t poY, uint8_t r, uint16_t color)
messi1 0:6e810b5b40a3 101 {
messi1 0:6e810b5b40a3 102 int x = -r, y = 0, err = 2-2*r, e2;
messi1 0:6e810b5b40a3 103 do{
messi1 0:6e810b5b40a3 104 drawPixel(poX-x, poY+y,color);
messi1 0:6e810b5b40a3 105 drawPixel(poX+x, poY+y,color);
messi1 0:6e810b5b40a3 106 drawPixel(poX+x, poY-y,color);
messi1 0:6e810b5b40a3 107 drawPixel(poX-x, poY-y,color);
messi1 0:6e810b5b40a3 108 e2 = err;
messi1 0:6e810b5b40a3 109 if(e2 <= y) {
messi1 0:6e810b5b40a3 110 err += ++y*2+1;
messi1 0:6e810b5b40a3 111 if(-x == y && e2 <= x) e2 = 0;
messi1 0:6e810b5b40a3 112 }
messi1 0:6e810b5b40a3 113 if(e2 > x) err += ++x*2+1;
messi1 0:6e810b5b40a3 114 } while(x <= 0);
messi1 0:6e810b5b40a3 115 }
messi1 0:6e810b5b40a3 116
messi1 8:ff74bd4d94d6 117 //---------------------------------------------------------------------------------------
messi1 8:ff74bd4d94d6 118 void SGL::fillCircle(uint8_t poX, uint8_t poY, uint8_t r, uint16_t color)
messi1 0:6e810b5b40a3 119 {
messi1 0:6e810b5b40a3 120 int x = -r, y = 0, err = 2-2*r, e2;
messi1 0:6e810b5b40a3 121 do{
messi1 8:ff74bd4d94d6 122 drawVLine(poX-x, poY-y, 2*y, color);
messi1 8:ff74bd4d94d6 123 drawVLine(poX+x, poY-y, 2*y, color);
messi1 0:6e810b5b40a3 124 e2 = err;
messi1 0:6e810b5b40a3 125 if(e2 <= y){
messi1 0:6e810b5b40a3 126 err += ++y*2+1;
messi1 0:6e810b5b40a3 127 if(-x == y && e2 <= x) e2 = 0;
messi1 0:6e810b5b40a3 128 }
messi1 0:6e810b5b40a3 129 if(e2 > x) err += ++x*2+1;
messi1 0:6e810b5b40a3 130 }while(x <= 0);
messi1 0:6e810b5b40a3 131 }
messi1 0:6e810b5b40a3 132
messi1 8:ff74bd4d94d6 133 //---------------------------------------------------------------------------------------
messi1 8:ff74bd4d94d6 134 void SGL::drawTraingle(uint8_t x0, uint8_t y0, uint8_t x1, uint8_t y1, uint8_t x2, uint8_t y2, uint16_t color)
messi1 0:6e810b5b40a3 135 {
messi1 0:6e810b5b40a3 136 drawLine(x0, y0, x1, y1,color);
messi1 0:6e810b5b40a3 137 drawLine(x1, y1, x2, y2,color);
messi1 0:6e810b5b40a3 138 drawLine(x2, y2, x0, y0,color);
messi1 0:6e810b5b40a3 139 }
messi1 0:6e810b5b40a3 140
messi1 8:ff74bd4d94d6 141 //---------------------------------------------------------------------------------------
messi1 8:ff74bd4d94d6 142 void SGL::fillTraingle(uint8_t x0, uint8_t y0, uint8_t x1, uint8_t y1, uint8_t x2, uint8_t y2, uint16_t color)
messi1 0:6e810b5b40a3 143 {
messi1 8:ff74bd4d94d6 144 uint8_t a, b, y, last;
messi1 0:6e810b5b40a3 145
messi1 0:6e810b5b40a3 146 if(y0 > y1){ swap(&y0, &y1); swap(&x0, &x1); }
messi1 0:6e810b5b40a3 147 if(y1 > y2){ swap(&y2, &y1); swap(&x2, &x1); }
messi1 0:6e810b5b40a3 148 if(y0 > y1){ swap(&y1, &y0); swap(&x1, &x0); }
messi1 0:6e810b5b40a3 149
messi1 0:6e810b5b40a3 150 if(y0 == y2){
messi1 0:6e810b5b40a3 151 x0 = MIN(x0,x1)<x2?MIN(x0,x1):x2;
messi1 0:6e810b5b40a3 152 x2 = MAX(x0,x1)>x2?MAX(x0,x1):x2;
messi1 8:ff74bd4d94d6 153 drawHLine(x0, y0, x2-x0, color);
messi1 0:6e810b5b40a3 154 return;
messi1 0:6e810b5b40a3 155 }
messi1 0:6e810b5b40a3 156
messi1 0:6e810b5b40a3 157 int16_t dx01 = x1 - x0, dy01 = y1 - y0,
messi1 0:6e810b5b40a3 158 dx02 = x2 - x0, dy02 = y2 - y0,
messi1 0:6e810b5b40a3 159 dx12 = x2 - x1, dy12 = y2 - y1;
messi1 0:6e810b5b40a3 160 int16_t sa = 0, sb = 0;
messi1 0:6e810b5b40a3 161
messi1 8:ff74bd4d94d6 162 if(y1 == y2)
messi1 8:ff74bd4d94d6 163 last = y1;
messi1 8:ff74bd4d94d6 164 else
messi1 8:ff74bd4d94d6 165 last = y1-1;
messi1 0:6e810b5b40a3 166
messi1 8:ff74bd4d94d6 167 for(y=y0; y<=last; ++y) {
messi1 0:6e810b5b40a3 168 a = x0 + sa / dy01;
messi1 0:6e810b5b40a3 169 b = x0 + sb / dy02;
messi1 0:6e810b5b40a3 170 sa += dx01;
messi1 0:6e810b5b40a3 171 sb += dx02;
messi1 0:6e810b5b40a3 172 if(a > b) swap(&a,&b);
messi1 8:ff74bd4d94d6 173 drawHLine(a, y, b-a+1, color);
messi1 0:6e810b5b40a3 174 }
messi1 0:6e810b5b40a3 175
messi1 0:6e810b5b40a3 176 sa = dx12 * (y - y1);
messi1 0:6e810b5b40a3 177 sb = dx02 * (y - y0);
messi1 8:ff74bd4d94d6 178 for(; y<=y2; ++y) {
messi1 0:6e810b5b40a3 179 a = x1 + sa / dy12;
messi1 0:6e810b5b40a3 180 b = x0 + sb / dy02;
messi1 0:6e810b5b40a3 181 sa += dx12;
messi1 0:6e810b5b40a3 182 sb += dx02;
messi1 0:6e810b5b40a3 183 if(a > b) swap(&a,&b);
messi1 8:ff74bd4d94d6 184 drawHLine(a, y, b-a+1, color);
messi1 0:6e810b5b40a3 185 }
messi1 0:6e810b5b40a3 186 }
messi1 0:6e810b5b40a3 187
messi1 8:ff74bd4d94d6 188 //---------------------------------------------------------------------------------------
messi1 8:ff74bd4d94d6 189 void SGL::drawChar(uint8_t ascii, uint8_t x, uint8_t y, uint8_t size, uint16_t color)
messi1 0:6e810b5b40a3 190 {
messi1 0:6e810b5b40a3 191 if((ascii<32)||(ascii>=127)){
messi1 0:6e810b5b40a3 192 return;
messi1 0:6e810b5b40a3 193 }
messi1 0:6e810b5b40a3 194
messi1 8:ff74bd4d94d6 195 for (uint8_t i = 0; i < FONT_X; ++i ) {
messi1 8:ff74bd4d94d6 196 uint8_t temp = simpleFont[ascii-0x20][i];
messi1 8:ff74bd4d94d6 197 uint8_t inrun = 0;
messi1 8:ff74bd4d94d6 198 uint8_t runlen = 0;
messi1 8:ff74bd4d94d6 199 uint8_t endrun = 0;
messi1 0:6e810b5b40a3 200
messi1 8:ff74bd4d94d6 201 for(uint8_t f = 0; f < FONT_Y; f++){
messi1 0:6e810b5b40a3 202 if((temp>>f)&0x01){
messi1 0:6e810b5b40a3 203 if (inrun) runlen += 1;
messi1 0:6e810b5b40a3 204 else {
messi1 0:6e810b5b40a3 205 inrun = 1;
messi1 0:6e810b5b40a3 206 runlen = 1;
messi1 0:6e810b5b40a3 207 }
messi1 0:6e810b5b40a3 208 } else if (inrun) {
messi1 0:6e810b5b40a3 209 endrun = 1;
messi1 0:6e810b5b40a3 210 inrun = 0;
messi1 0:6e810b5b40a3 211 }
messi1 0:6e810b5b40a3 212
messi1 0:6e810b5b40a3 213 if (f == FONT_Y - 1 && inrun) {
messi1 0:6e810b5b40a3 214 endrun = 1;
messi1 0:6e810b5b40a3 215 // need the +1 b/c we this code is normally
messi1 0:6e810b5b40a3 216 // only triggered when f == FONT_Y, due to the
messi1 0:6e810b5b40a3 217 // edge-triggered nature of this algorithm
messi1 0:6e810b5b40a3 218 f += 1;
messi1 0:6e810b5b40a3 219 }
messi1 0:6e810b5b40a3 220
messi1 0:6e810b5b40a3 221 if (endrun) {
messi1 8:ff74bd4d94d6 222 fillRect(x+i*size, y+(f-runlen)*size, size, runlen*size, color);
messi1 0:6e810b5b40a3 223 inrun = 0;
messi1 0:6e810b5b40a3 224 runlen = 0;
messi1 0:6e810b5b40a3 225 endrun = 0;
messi1 0:6e810b5b40a3 226 }
messi1 0:6e810b5b40a3 227 }
messi1 0:6e810b5b40a3 228 }
messi1 0:6e810b5b40a3 229 }
messi1 0:6e810b5b40a3 230
messi1 8:ff74bd4d94d6 231 //---------------------------------------------------------------------------------------
messi1 8:ff74bd4d94d6 232 void SGL::drawString(char *string, uint8_t x, uint8_t y, uint8_t size, uint16_t color)
messi1 0:6e810b5b40a3 233 {
messi1 0:6e810b5b40a3 234 while(*string){
messi1 0:6e810b5b40a3 235 drawChar(*string, x, y, size, color);
messi1 0:6e810b5b40a3 236 *string++;
messi1 0:6e810b5b40a3 237 x += FONT_SPACE*size;
messi1 0:6e810b5b40a3 238 if(x >= _width-1){
messi1 0:6e810b5b40a3 239 y += FONT_Y*size;
messi1 0:6e810b5b40a3 240 x = 0;
messi1 0:6e810b5b40a3 241 }
messi1 0:6e810b5b40a3 242 }
messi1 0:6e810b5b40a3 243 }
messi1 0:6e810b5b40a3 244
messi1 8:ff74bd4d94d6 245 //---------------------------------------------------------------------------------------
messi1 8:ff74bd4d94d6 246 void SGL::drawBitMap(uint8_t x, uint8_t y, const uint8_t *bitmap, uint8_t width, uint8_t height, uint16_t color)
messi1 0:6e810b5b40a3 247 {
messi1 8:ff74bd4d94d6 248 uint8_t byteWidth = (width + 7) / 8;
messi1 8:ff74bd4d94d6 249
messi1 8:ff74bd4d94d6 250 for(uint8_t j = 0; j < height; ++j)
messi1 8:ff74bd4d94d6 251 {
messi1 8:ff74bd4d94d6 252 for(uint8_t i = 0; i < width; ++i )
messi1 8:ff74bd4d94d6 253 {
messi1 8:ff74bd4d94d6 254 if( *(bitmap + j * byteWidth + i / 8) & (128 >> (i & 7)) )
messi1 8:ff74bd4d94d6 255 {
messi1 0:6e810b5b40a3 256 drawPixel(x+i, y+j, color);
messi1 0:6e810b5b40a3 257 }
messi1 0:6e810b5b40a3 258 }
messi1 0:6e810b5b40a3 259 }
messi1 0:6e810b5b40a3 260 }
messi1 0:6e810b5b40a3 261
messi1 8:ff74bd4d94d6 262 //---------------------------------------------------------------------------------------
messi1 0:6e810b5b40a3 263 void SGL::fillScreen(uint16_t color)
messi1 0:6e810b5b40a3 264 {
messi1 8:ff74bd4d94d6 265 fillRect(0, 0, _width, _height, color);
messi1 0:6e810b5b40a3 266 }