A library with drivers for different peripherals on the LPC4088 QuickStart Board or related add-on boards.
Fork of EALib by
GFXFb.cpp@21:5ac242986175, 2017-05-22 (annotated)
- Committer:
- msamadani
- Date:
- Mon May 22 19:58:24 2017 +0000
- Revision:
- 21:5ac242986175
- Parent:
- 12:15597e45eea0
Working version of the library.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
embeddedartists | 12:15597e45eea0 | 1 | /* |
embeddedartists | 12:15597e45eea0 | 2 | * Copyright 2013 Embedded Artists AB |
embeddedartists | 12:15597e45eea0 | 3 | * |
embeddedartists | 12:15597e45eea0 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
embeddedartists | 12:15597e45eea0 | 5 | * you may not use this file except in compliance with the License. |
embeddedartists | 12:15597e45eea0 | 6 | * You may obtain a copy of the License at |
embeddedartists | 12:15597e45eea0 | 7 | * |
embeddedartists | 12:15597e45eea0 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
embeddedartists | 12:15597e45eea0 | 9 | * |
embeddedartists | 12:15597e45eea0 | 10 | * Unless required by applicable law or agreed to in writing, software |
embeddedartists | 12:15597e45eea0 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
embeddedartists | 12:15597e45eea0 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
embeddedartists | 12:15597e45eea0 | 13 | * See the License for the specific language governing permissions and |
embeddedartists | 12:15597e45eea0 | 14 | * limitations under the License. |
embeddedartists | 12:15597e45eea0 | 15 | */ |
embeddedartists | 4:b32cf4ef45c5 | 16 | |
embeddedartists | 4:b32cf4ef45c5 | 17 | /****************************************************************************** |
embeddedartists | 4:b32cf4ef45c5 | 18 | * Includes |
embeddedartists | 4:b32cf4ef45c5 | 19 | *****************************************************************************/ |
embeddedartists | 4:b32cf4ef45c5 | 20 | |
embeddedartists | 0:0fdadbc3d852 | 21 | #include "mbed.h" |
embeddedartists | 0:0fdadbc3d852 | 22 | #include "GFXFb.h" |
embeddedartists | 0:0fdadbc3d852 | 23 | |
embeddedartists | 0:0fdadbc3d852 | 24 | |
embeddedartists | 0:0fdadbc3d852 | 25 | GFXFb::GFXFb(uint16_t w, uint16_t h, uint16_t* fb) : Adafruit_GFX(w, h) { |
embeddedartists | 0:0fdadbc3d852 | 26 | _fb = fb; |
embeddedartists | 0:0fdadbc3d852 | 27 | } |
embeddedartists | 0:0fdadbc3d852 | 28 | |
embeddedartists | 0:0fdadbc3d852 | 29 | |
embeddedartists | 0:0fdadbc3d852 | 30 | void GFXFb::drawPixel(int16_t x, int16_t y, uint16_t color) { |
embeddedartists | 0:0fdadbc3d852 | 31 | if (_fb == 0) return; |
embeddedartists | 0:0fdadbc3d852 | 32 | |
embeddedartists | 0:0fdadbc3d852 | 33 | if (x < 0 || x >= width() || y < 0 || y >= height()) return; |
embeddedartists | 0:0fdadbc3d852 | 34 | |
embeddedartists | 0:0fdadbc3d852 | 35 | *(_fb + x + y*_width ) = color; |
embeddedartists | 0:0fdadbc3d852 | 36 | } |
embeddedartists | 0:0fdadbc3d852 | 37 | |
embeddedartists | 0:0fdadbc3d852 | 38 | void GFXFb::drawFastVLine(int16_t x, int16_t y, int16_t h, uint16_t color) { |
embeddedartists | 0:0fdadbc3d852 | 39 | int16_t y2 = y + h - 1; |
embeddedartists | 0:0fdadbc3d852 | 40 | |
embeddedartists | 0:0fdadbc3d852 | 41 | if (y < 0) y = 0; |
embeddedartists | 0:0fdadbc3d852 | 42 | if (y2 >= _height) y2 = _height-1; |
embeddedartists | 0:0fdadbc3d852 | 43 | |
embeddedartists | 0:0fdadbc3d852 | 44 | if (_fb == 0) return; |
embeddedartists | 0:0fdadbc3d852 | 45 | if (x < 0 || x >= _width || y >= _height || y2 < y) return; |
embeddedartists | 0:0fdadbc3d852 | 46 | |
embeddedartists | 0:0fdadbc3d852 | 47 | uint16_t* f = (_fb + x + y*_width); |
embeddedartists | 0:0fdadbc3d852 | 48 | while(y <= y2) { |
embeddedartists | 0:0fdadbc3d852 | 49 | |
embeddedartists | 0:0fdadbc3d852 | 50 | *f = color; |
embeddedartists | 0:0fdadbc3d852 | 51 | f += _width; |
embeddedartists | 0:0fdadbc3d852 | 52 | y++; |
embeddedartists | 0:0fdadbc3d852 | 53 | } |
embeddedartists | 0:0fdadbc3d852 | 54 | |
embeddedartists | 0:0fdadbc3d852 | 55 | } |
embeddedartists | 0:0fdadbc3d852 | 56 | |
embeddedartists | 0:0fdadbc3d852 | 57 | void GFXFb::drawFastHLine(int16_t x, int16_t y, int16_t w, uint16_t color) { |
embeddedartists | 0:0fdadbc3d852 | 58 | int16_t x2 = x + w - 1; |
embeddedartists | 0:0fdadbc3d852 | 59 | |
embeddedartists | 0:0fdadbc3d852 | 60 | if (x < 0) x = 0; |
embeddedartists | 0:0fdadbc3d852 | 61 | if (x2 >= _width) x2 = _width-1; |
embeddedartists | 0:0fdadbc3d852 | 62 | |
embeddedartists | 0:0fdadbc3d852 | 63 | if (_fb == 0) return; |
embeddedartists | 0:0fdadbc3d852 | 64 | if (x >= _width || x2 < x || y < 0 || y >= _height) return; |
embeddedartists | 0:0fdadbc3d852 | 65 | |
embeddedartists | 0:0fdadbc3d852 | 66 | uint16_t* f = (_fb + x + y*_width); |
embeddedartists | 0:0fdadbc3d852 | 67 | while(x <= x2) { |
embeddedartists | 0:0fdadbc3d852 | 68 | |
embeddedartists | 0:0fdadbc3d852 | 69 | *f++ = color; |
embeddedartists | 0:0fdadbc3d852 | 70 | x++; |
embeddedartists | 0:0fdadbc3d852 | 71 | } |
embeddedartists | 0:0fdadbc3d852 | 72 | |
embeddedartists | 0:0fdadbc3d852 | 73 | } |
embeddedartists | 0:0fdadbc3d852 | 74 | |
embeddedartists | 0:0fdadbc3d852 | 75 | |
embeddedartists | 0:0fdadbc3d852 | 76 | void GFXFb::fillScreen(uint16_t color) { |
embeddedartists | 0:0fdadbc3d852 | 77 | |
embeddedartists | 0:0fdadbc3d852 | 78 | if (_fb == 0) return; |
embeddedartists | 0:0fdadbc3d852 | 79 | |
embeddedartists | 0:0fdadbc3d852 | 80 | int len = _width*_height; |
embeddedartists | 0:0fdadbc3d852 | 81 | for (int i = 0; i < len; i++) { |
embeddedartists | 0:0fdadbc3d852 | 82 | *(_fb+i) = color; |
embeddedartists | 0:0fdadbc3d852 | 83 | } |
embeddedartists | 0:0fdadbc3d852 | 84 | } |
embeddedartists | 0:0fdadbc3d852 | 85 | |
embeddedartists | 0:0fdadbc3d852 | 86 | void GFXFb::writeString(const char* s) { |
embeddedartists | 0:0fdadbc3d852 | 87 | if (s == NULL) return; |
embeddedartists | 0:0fdadbc3d852 | 88 | |
embeddedartists | 0:0fdadbc3d852 | 89 | while(*s != 0) { |
embeddedartists | 0:0fdadbc3d852 | 90 | write(*s); |
embeddedartists | 0:0fdadbc3d852 | 91 | s++; |
embeddedartists | 0:0fdadbc3d852 | 92 | } |
embeddedartists | 0:0fdadbc3d852 | 93 | } |
embeddedartists | 0:0fdadbc3d852 | 94 | |
embeddedartists | 0:0fdadbc3d852 | 95 | int16_t GFXFb::getStringWidth(const char* s) { |
embeddedartists | 0:0fdadbc3d852 | 96 | // the default font in GFX is 6 pixels in width |
embeddedartists | 0:0fdadbc3d852 | 97 | int chWidth = 6*textsize; |
embeddedartists | 0:0fdadbc3d852 | 98 | int sz = 0; |
embeddedartists | 0:0fdadbc3d852 | 99 | |
embeddedartists | 0:0fdadbc3d852 | 100 | while(*s != 0) { |
embeddedartists | 0:0fdadbc3d852 | 101 | sz += chWidth; |
embeddedartists | 0:0fdadbc3d852 | 102 | s++; |
embeddedartists | 0:0fdadbc3d852 | 103 | } |
embeddedartists | 0:0fdadbc3d852 | 104 | |
embeddedartists | 0:0fdadbc3d852 | 105 | return sz; |
embeddedartists | 0:0fdadbc3d852 | 106 | } |
embeddedartists | 0:0fdadbc3d852 | 107 | |
embeddedartists | 0:0fdadbc3d852 | 108 | int16_t GFXFb::getStringHeight(const char* s) { |
embeddedartists | 0:0fdadbc3d852 | 109 | (void)s; |
embeddedartists | 0:0fdadbc3d852 | 110 | // the default font in GFX is 8 pixels in height |
embeddedartists | 0:0fdadbc3d852 | 111 | return 8; |
embeddedartists | 0:0fdadbc3d852 | 112 | } |
embeddedartists | 0:0fdadbc3d852 | 113 | |
embeddedartists | 0:0fdadbc3d852 | 114 |