Adafruit-GFX porting for mbed OS6. Needed to add #include "Stream.h" in beginning of the Adafruit_GFX.h
Dependents: ollin-ja-samin-hieno-ihmislaskin MCLAB10 OLEDrgb_MP OLEDrgb_MIC3_L432KC_OS6_hk McLab10_OLEDrgb_L432KC_OS60_tk2
Adafruit_GFX.cpp
- Committer:
- lelect
- Date:
- 2014-05-23
- Revision:
- 0:3e9c32359703
- Child:
- 1:c2715acb7466
File content as of revision 0:3e9c32359703:
/* This is the core graphics library for all our displays, providing a common set of graphics primitives (points, lines, circles, etc.). It needs to be paired with a hardware-specific library for each display device we carry (to handle the lower-level functions). Adafruit invests time and resources providing this open source code, please support Adafruit & open-source hardware by purchasing products from Adafruit! Copyright (c) 2013 Adafruit Industries. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: - Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. - Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "mbed.h" #include "Adafruit_GFX.h" #include "glcdfont.h" // Draw a circle outline void Adafruit_GFX::drawCircle(int16_t x0, int16_t y0, int16_t r, uint16_t color) { int16_t f = 1 - r; int16_t ddF_x = 1; int16_t ddF_y = -2 * r; int16_t x = 0; int16_t y = r; drawPixel(x0 , y0+r, color); drawPixel(x0 , y0-r, color); drawPixel(x0+r, y0 , color); drawPixel(x0-r, y0 , color); while (x<y) { if (f >= 0) { y--; ddF_y += 2; f += ddF_y; } x++; ddF_x += 2; f += ddF_x; drawPixel(x0 + x, y0 + y, color); drawPixel(x0 - x, y0 + y, color); drawPixel(x0 + x, y0 - y, color); drawPixel(x0 - x, y0 - y, color); drawPixel(x0 + y, y0 + x, color); drawPixel(x0 - y, y0 + x, color); drawPixel(x0 + y, y0 - x, color); drawPixel(x0 - y, y0 - x, color); } } void Adafruit_GFX::drawCircleHelper( int16_t x0, int16_t y0, int16_t r, uint8_t cornername, uint16_t color) { int16_t f = 1 - r; int16_t ddF_x = 1; int16_t ddF_y = -2 * r; int16_t x = 0; int16_t y = r; while (x<y) { if (f >= 0) { y--; ddF_y += 2; f += ddF_y; } x++; ddF_x += 2; f += ddF_x; if (cornername & 0x4) { drawPixel(x0 + x, y0 + y, color); drawPixel(x0 + y, y0 + x, color); } if (cornername & 0x2) { drawPixel(x0 + x, y0 - y, color); drawPixel(x0 + y, y0 - x, color); } if (cornername & 0x8) { drawPixel(x0 - y, y0 + x, color); drawPixel(x0 - x, y0 + y, color); } if (cornername & 0x1) { drawPixel(x0 - y, y0 - x, color); drawPixel(x0 - x, y0 - y, color); } } } void Adafruit_GFX::fillCircle(int16_t x0, int16_t y0, int16_t r, uint16_t color) { drawFastVLine(x0, y0-r, 2*r+1, color); fillCircleHelper(x0, y0, r, 3, 0, color); } // Used to do circles and roundrects void Adafruit_GFX::fillCircleHelper(int16_t x0, int16_t y0, int16_t r, uint8_t cornername, int16_t delta, uint16_t color) { int16_t f = 1 - r; int16_t ddF_x = 1; int16_t ddF_y = -2 * r; int16_t x = 0; int16_t y = r; while (x<y) { if (f >= 0) { y--; ddF_y += 2; f += ddF_y; } x++; ddF_x += 2; f += ddF_x; if (cornername & 0x1) { drawFastVLine(x0+x, y0-y, 2*y+1+delta, color); drawFastVLine(x0+y, y0-x, 2*x+1+delta, color); } if (cornername & 0x2) { drawFastVLine(x0-x, y0-y, 2*y+1+delta, color); drawFastVLine(x0-y, y0-x, 2*x+1+delta, color); } } } // Bresenham's algorithm - thx wikpedia void Adafruit_GFX::drawLine(int16_t x0, int16_t y0, int16_t x1, int16_t y1, uint16_t color) { int16_t steep = abs(y1 - y0) > abs(x1 - x0); if (steep) { swap(x0, y0); swap(x1, y1); } if (x0 > x1) { swap(x0, x1); swap(y0, y1); } int16_t dx, dy; dx = x1 - x0; dy = abs(y1 - y0); int16_t err = dx / 2; int16_t ystep; if (y0 < y1) { ystep = 1; } else { ystep = -1; } for (; x0<=x1; x0++) { if (steep) { drawPixel(y0, x0, color); } else { drawPixel(x0, y0, color); } err -= dy; if (err < 0) { y0 += ystep; err += dx; } } } // Draw a rectangle void Adafruit_GFX::drawRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color) { drawFastHLine(x, y, w, color); drawFastHLine(x, y+h-1, w, color); drawFastVLine(x, y, h, color); drawFastVLine(x+w-1, y, h, color); } void Adafruit_GFX::drawFastVLine(int16_t x, int16_t y, int16_t h, uint16_t color) { // Update in subclasses if desired! drawLine(x, y, x, y+h-1, color); } void Adafruit_GFX::drawFastHLine(int16_t x, int16_t y, int16_t w, uint16_t color) { // Update in subclasses if desired! drawLine(x, y, x+w-1, y, color); } void Adafruit_GFX::fillRect(int16_t x, int16_t y, int16_t w, int16_t h, uint16_t color) { // Update in subclasses if desired! for (int16_t i=x; i<x+w; i++) { drawFastVLine(i, y, h, color); } } void Adafruit_GFX::fillScreen(uint16_t color) { fillRect(0, 0, _width, _height, color); } // Draw a rounded rectangle void Adafruit_GFX::drawRoundRect(int16_t x, int16_t y, int16_t w, int16_t h, int16_t r, uint16_t color) { // smarter version drawFastHLine(x+r , y , w-2*r, color); // Top drawFastHLine(x+r , y+h-1, w-2*r, color); // Bottom drawFastVLine(x , y+r , h-2*r, color); // Left drawFastVLine(x+w-1, y+r , h-2*r, color); // Right // draw four corners drawCircleHelper(x+r , y+r , r, 1, color); drawCircleHelper(x+w-r-1, y+r , r, 2, color); drawCircleHelper(x+w-r-1, y+h-r-1, r, 4, color); drawCircleHelper(x+r , y+h-r-1, r, 8, color); } // Fill a rounded rectangle void Adafruit_GFX::fillRoundRect(int16_t x, int16_t y, int16_t w, int16_t h, int16_t r, uint16_t color) { // smarter version fillRect(x+r, y, w-2*r, h, color); // draw four corners fillCircleHelper(x+w-r-1, y+r, r, 1, h-2*r-1, color); fillCircleHelper(x+r , y+r, r, 2, h-2*r-1, color); } // Draw a triangle void Adafruit_GFX::drawTriangle(int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint16_t color) { drawLine(x0, y0, x1, y1, color); drawLine(x1, y1, x2, y2, color); drawLine(x2, y2, x0, y0, color); } // Fill a triangle void Adafruit_GFX::fillTriangle ( int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint16_t color) { int16_t a, b, y, last; // Sort coordinates by Y order (y2 >= y1 >= y0) if (y0 > y1) { swap(y0, y1); swap(x0, x1); } if (y1 > y2) { swap(y2, y1); swap(x2, x1); } if (y0 > y1) { swap(y0, y1); swap(x0, x1); } if(y0 == y2) { // Handle awkward all-on-same-line case as its own thing a = b = x0; if(x1 < a) a = x1; else if(x1 > b) b = x1; if(x2 < a) a = x2; else if(x2 > b) b = x2; drawFastHLine(a, y0, b-a+1, color); return; } int16_t dx01 = x1 - x0, dy01 = y1 - y0, dx02 = x2 - x0, dy02 = y2 - y0, dx12 = x2 - x1, dy12 = y2 - y1, sa = 0, sb = 0; // For upper part of triangle, find scanline crossings for segments // 0-1 and 0-2. If y1=y2 (flat-bottomed triangle), the scanline y1 // is included here (and second loop will be skipped, avoiding a /0 // error there), otherwise scanline y1 is skipped here and handled // in the second loop...which also avoids a /0 error here if y0=y1 // (flat-topped triangle). if(y1 == y2) last = y1; // Include y1 scanline else last = y1-1; // Skip it for(y=y0; y<=last; y++) { a = x0 + sa / dy01; b = x0 + sb / dy02; sa += dx01; sb += dx02; /* longhand: a = x0 + (x1 - x0) * (y - y0) / (y1 - y0); b = x0 + (x2 - x0) * (y - y0) / (y2 - y0); */ if(a > b) swap(a,b); drawFastHLine(a, y, b-a+1, color); } // For lower part of triangle, find scanline crossings for segments // 0-2 and 1-2. This loop is skipped if y1=y2. sa = dx12 * (y - y1); sb = dx02 * (y - y0); for(; y<=y2; y++) { a = x1 + sa / dy12; b = x0 + sb / dy02; sa += dx12; sb += dx02; /* longhand: a = x1 + (x2 - x1) * (y - y1) / (y2 - y1); b = x0 + (x2 - x0) * (y - y0) / (y2 - y0); */ if(a > b) swap(a,b); drawFastHLine(a, y, b-a+1, color); } } void Adafruit_GFX::drawBitmap(int16_t x, int16_t y, const uint8_t *bitmap, int16_t w, int16_t h, uint16_t color) { int16_t i, j; for(j=0; j<h; j++) { for(i=0; i<w; i++ ) { if(bitmap[i+(j/8)*w]& _BV(j%8) ) drawPixel(x+i, y+j, color); } } } size_t Adafruit_GFX::writeChar(uint8_t c) { if (c == '\n') { cursor_y += textsize*8; cursor_x = 0; } else if (c == '\r') { cursor_x = 0; } else { drawChar(cursor_x, cursor_y, c, textcolor, textbgcolor, textsize); cursor_x += textsize*6; if (wrap && (cursor_x > (_width - textsize*6))) { cursor_y += textsize*8; cursor_x = 0; } } return 1; } // Draw a character void Adafruit_GFX::drawChar(int16_t x, int16_t y, unsigned char c, uint16_t color, uint16_t bg, uint8_t size) { if((x >= _width)|| // Clip right (y >= _height)|| // Clip bottom ((x + 6 * size - 1) < 0) || // Clip left ((y + 8 * size - 1) < 0))// Clip top return; for (int8_t i=0; i<6; i++ ) { uint8_t line; if (i == 5) line = 0x0; else line = font[(c*5)+i]; for (int8_t j = 0; j<8; j++) { if (line & 0x1) { if (size == 1) // default size drawPixel(x+i, y+j, color); else { // big size fillRect(x+(i*size), y+(j*size), size, size, color); } } else if (bg != color) { if (size == 1) // default size drawPixel(x+i, y+j, bg); else { // big size fillRect(x+i*size, y+j*size, size, size, bg); } } line >>= 1; } } } void Adafruit_GFX::invertDisplay(bool i) { // Do nothing, must be subclassed if supported }