test / EALib

A library with drivers for different peripherals on the LPC4088 QuickStart Board or related add-on boards.

Dependencies:   FATFileSystem

Dependents:   bare

Fork of EALib by EmbeddedArtists AB

GFXFb.cpp@6:405c6e5a4eaf, 2013-10-31 (annotated)

Committer:
embeddedartists
Date:
Thu Oct 31 13:23:11 2013 +0000
Revision:
6:405c6e5a4eaf
Parent:
4:b32cf4ef45c5
Child:
12:15597e45eea0
Updated SPI clock frequency for TSC2046

Who changed what in which revision?

UserRevisionLine numberNew contents of line
embeddedartists 4:b32cf4ef45c5 1
embeddedartists 4:b32cf4ef45c5 2 /******************************************************************************
embeddedartists 4:b32cf4ef45c5 3 * Includes
embeddedartists 4:b32cf4ef45c5 4 *****************************************************************************/
embeddedartists 4:b32cf4ef45c5 5
embeddedartists 0:0fdadbc3d852 6 #include "mbed.h"
embeddedartists 0:0fdadbc3d852 7 #include "GFXFb.h"
embeddedartists 0:0fdadbc3d852 8
embeddedartists 0:0fdadbc3d852 9
embeddedartists 0:0fdadbc3d852 10 GFXFb::GFXFb(uint16_t w, uint16_t h, uint16_t* fb) : Adafruit_GFX(w, h) {
embeddedartists 0:0fdadbc3d852 11 _fb = fb;
embeddedartists 0:0fdadbc3d852 12 }
embeddedartists 0:0fdadbc3d852 13
embeddedartists 0:0fdadbc3d852 14
embeddedartists 0:0fdadbc3d852 15 void GFXFb::drawPixel(int16_t x, int16_t y, uint16_t color) {
embeddedartists 0:0fdadbc3d852 16 if (_fb == 0) return;
embeddedartists 0:0fdadbc3d852 17
embeddedartists 0:0fdadbc3d852 18 if (x < 0 || x >= width() || y < 0 || y >= height()) return;
embeddedartists 0:0fdadbc3d852 19
embeddedartists 0:0fdadbc3d852 20 *(_fb + x + y*_width ) = color;
embeddedartists 0:0fdadbc3d852 21 }
embeddedartists 0:0fdadbc3d852 22
embeddedartists 0:0fdadbc3d852 23 void GFXFb::drawFastVLine(int16_t x, int16_t y, int16_t h, uint16_t color) {
embeddedartists 0:0fdadbc3d852 24 int16_t y2 = y + h - 1;
embeddedartists 0:0fdadbc3d852 25
embeddedartists 0:0fdadbc3d852 26 if (y < 0) y = 0;
embeddedartists 0:0fdadbc3d852 27 if (y2 >= _height) y2 = _height-1;
embeddedartists 0:0fdadbc3d852 28
embeddedartists 0:0fdadbc3d852 29 if (_fb == 0) return;
embeddedartists 0:0fdadbc3d852 30 if (x < 0 || x >= _width || y >= _height || y2 < y) return;
embeddedartists 0:0fdadbc3d852 31
embeddedartists 0:0fdadbc3d852 32 uint16_t* f = (_fb + x + y*_width);
embeddedartists 0:0fdadbc3d852 33 while(y <= y2) {
embeddedartists 0:0fdadbc3d852 34
embeddedartists 0:0fdadbc3d852 35 *f = color;
embeddedartists 0:0fdadbc3d852 36 f += _width;
embeddedartists 0:0fdadbc3d852 37 y++;
embeddedartists 0:0fdadbc3d852 38 }
embeddedartists 0:0fdadbc3d852 39
embeddedartists 0:0fdadbc3d852 40 }
embeddedartists 0:0fdadbc3d852 41
embeddedartists 0:0fdadbc3d852 42 void GFXFb::drawFastHLine(int16_t x, int16_t y, int16_t w, uint16_t color) {
embeddedartists 0:0fdadbc3d852 43 int16_t x2 = x + w - 1;
embeddedartists 0:0fdadbc3d852 44
embeddedartists 0:0fdadbc3d852 45 if (x < 0) x = 0;
embeddedartists 0:0fdadbc3d852 46 if (x2 >= _width) x2 = _width-1;
embeddedartists 0:0fdadbc3d852 47
embeddedartists 0:0fdadbc3d852 48 if (_fb == 0) return;
embeddedartists 0:0fdadbc3d852 49 if (x >= _width || x2 < x || y < 0 || y >= _height) return;
embeddedartists 0:0fdadbc3d852 50
embeddedartists 0:0fdadbc3d852 51 uint16_t* f = (_fb + x + y*_width);
embeddedartists 0:0fdadbc3d852 52 while(x <= x2) {
embeddedartists 0:0fdadbc3d852 53
embeddedartists 0:0fdadbc3d852 54 *f++ = color;
embeddedartists 0:0fdadbc3d852 55 x++;
embeddedartists 0:0fdadbc3d852 56 }
embeddedartists 0:0fdadbc3d852 57
embeddedartists 0:0fdadbc3d852 58 }
embeddedartists 0:0fdadbc3d852 59
embeddedartists 0:0fdadbc3d852 60
embeddedartists 0:0fdadbc3d852 61 void GFXFb::fillScreen(uint16_t color) {
embeddedartists 0:0fdadbc3d852 62
embeddedartists 0:0fdadbc3d852 63 if (_fb == 0) return;
embeddedartists 0:0fdadbc3d852 64
embeddedartists 0:0fdadbc3d852 65 int len = _width*_height;
embeddedartists 0:0fdadbc3d852 66 for (int i = 0; i < len; i++) {
embeddedartists 0:0fdadbc3d852 67 *(_fb+i) = color;
embeddedartists 0:0fdadbc3d852 68 }
embeddedartists 0:0fdadbc3d852 69 }
embeddedartists 0:0fdadbc3d852 70
embeddedartists 0:0fdadbc3d852 71 void GFXFb::writeString(const char* s) {
embeddedartists 0:0fdadbc3d852 72 if (s == NULL) return;
embeddedartists 0:0fdadbc3d852 73
embeddedartists 0:0fdadbc3d852 74 while(*s != 0) {
embeddedartists 0:0fdadbc3d852 75 write(*s);
embeddedartists 0:0fdadbc3d852 76 s++;
embeddedartists 0:0fdadbc3d852 77 }
embeddedartists 0:0fdadbc3d852 78 }
embeddedartists 0:0fdadbc3d852 79
embeddedartists 0:0fdadbc3d852 80 int16_t GFXFb::getStringWidth(const char* s) {
embeddedartists 0:0fdadbc3d852 81 // the default font in GFX is 6 pixels in width
embeddedartists 0:0fdadbc3d852 82 int chWidth = 6*textsize;
embeddedartists 0:0fdadbc3d852 83 int sz = 0;
embeddedartists 0:0fdadbc3d852 84
embeddedartists 0:0fdadbc3d852 85 while(*s != 0) {
embeddedartists 0:0fdadbc3d852 86 sz += chWidth;
embeddedartists 0:0fdadbc3d852 87 s++;
embeddedartists 0:0fdadbc3d852 88 }
embeddedartists 0:0fdadbc3d852 89
embeddedartists 0:0fdadbc3d852 90 return sz;
embeddedartists 0:0fdadbc3d852 91 }
embeddedartists 0:0fdadbc3d852 92
embeddedartists 0:0fdadbc3d852 93 int16_t GFXFb::getStringHeight(const char* s) {
embeddedartists 0:0fdadbc3d852 94 (void)s;
embeddedartists 0:0fdadbc3d852 95 // the default font in GFX is 8 pixels in height
embeddedartists 0:0fdadbc3d852 96 return 8;
embeddedartists 0:0fdadbc3d852 97 }
embeddedartists 0:0fdadbc3d852 98
embeddedartists 0:0fdadbc3d852 99