display.h

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/*
Copyright (c) 2023 Eindhoven University of Technology
 
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
 
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
 
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/
#ifndef SCREEN_H
#define SCREEN_H
 
#include <fontx.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
 
#define DISPLAY_HEIGHT 240
#define DISPLAY_WIDTH 240
 
enum colors {
  RGB_RED = 0xf800,
  RGB_GREEN = 0x07e0,
  RGB_BLUE = 0x001f,
  RGB_BLACK = 0x0000,
  RGB_WHITE = 0xffff,
  RGB_GRAY = 0x8c51,
  RGB_YELLOW = 0xFFE0,
  RGB_CYAN = 0x07FF,
  RGB_PURPLE = 0xF81F
};
 
enum directions {
  TEXT_DIRECTION0 = 0,
  TEXT_DIRECTION90 = 1,
  TEXT_DIRECTION180 = 2,
  TEXT_DIRECTION270 = 3,
  NUM_TEXT_DIRECTIONS
};
 
typedef struct {
  uint16_t _width;
  uint16_t _height;
  uint16_t _offsetx;
  uint16_t _offsety;
  uint16_t _font_direction;
  uint16_t _font_fill;
  uint16_t _font_fill_color;
  uint16_t _font_underline;
  uint16_t _font_underline_color;
  int16_t _dc;
  int16_t _bl;
} display_t;
 
extern void display_init(display_t *display);
 
extern void display_destroy(display_t *display);
 
extern void displayDrawPixel(display_t *display, uint16_t x, uint16_t y,
                             uint16_t color);
 
extern void displayDrawFillRect(display_t *display, uint16_t x1, uint16_t y1,
                                uint16_t x2, uint16_t y2, uint16_t color);
 
extern void displayFillScreen(display_t *display, uint16_t color);
 
extern void displayDrawLine(display_t *display, uint16_t x1, uint16_t y1,
                            uint16_t x2, uint16_t y2, uint16_t color);
 
extern void displayDrawRect(display_t *display, uint16_t x1, uint16_t y1,
                            uint16_t x2, uint16_t y2, uint16_t color);
 
extern void displayDrawRectAngle(display_t *display, uint16_t xc, uint16_t yc,
                                 uint16_t w, uint16_t h, uint16_t angle,
                                 uint16_t color);
 
extern void displayDrawTriangleCenter(display_t *display, uint16_t xc,
                                      uint16_t yc, uint16_t w, uint16_t h,
                                      uint16_t angle, uint16_t color);
 
extern void displayDrawCircle(display_t *display, uint16_t x_center,
                              uint16_t y_center, uint16_t r, uint16_t color);
 
extern void displayDrawFillCircle(display_t *display, uint16_t x_center,
                                  uint16_t y_center, uint16_t r,
                                  uint16_t color);
 
extern void displayDrawRoundRect(display_t *display, uint16_t x1, uint16_t y1,
                                 uint16_t x2, uint16_t y2, uint16_t r,
                                 uint16_t color);
 
extern uint16_t rgb_conv(uint16_t r, uint16_t g, uint16_t b);
 
extern int displayDrawChar(display_t *display, FontxFile *fx, uint16_t x,
                           uint16_t y, uint8_t ascii, uint16_t color);
 
extern int displayDrawString(display_t *display, FontxFile *fx, uint16_t x,
                             uint16_t y, uint8_t *ascii, uint16_t color);
 
extern void displaySetFontDirection(display_t *display, uint16_t dir);
 
extern void displaySetFontFill(display_t *display, uint16_t color);
 
extern void displayUnsetFontFill(display_t *display);
 
extern void displaySetFontUnderLine(display_t *display, uint16_t color);
 
extern void displayUnsetFontUnderLine(display_t *display);
 
extern void displayDisplayOff(display_t *display);
 
extern void displayDisplayOn(display_t *display);
 
extern void displayBacklightOff(display_t *display);
 
extern void displayBacklightOn(display_t *display);
 
extern void displayInversionOff(display_t *display);
 
extern void displayInversionOn(display_t *display);
 
extern void displayDrawTriangle(display_t *display, uint16_t x1, uint16_t y1,
                                uint16_t x2, uint16_t y2, uint16_t x3,
                                uint16_t y3, uint16_t color);
 
#endif /* MAIN_ST7789_H_ */