dejvino/lilybook
1
0
Fork 0
mirror of https://github.com/Dejvino/lilybook.git synced 2024-11-15 04:42:35 +00:00
Code Issues Releases Wiki Activity
efd01e5ecb
lilybook/components/epaper/EPD.h

577 lines
18 KiB
C
Raw Normal View History

Import of adapted loboris/ESP32_ePaper_example repository
2020-01-29 17:30:50 +00:00
/*
* High level EPD functions
* Author: LoBo 06/2017, https://github/loboris
*
*/
#ifndef _EPD_H_
#define _EPD_H_
#include <stdlib.h>
#include "EPDspi.h"
Adjusted for C++. Removed EPD testing code.
2020-01-29 20:51:49 +00:00
#ifdef __cplusplus
extern "C" {
#endif
Import of adapted loboris/ESP32_ePaper_example repository
2020-01-29 17:30:50 +00:00
typedef uint8_t color_t;
typedef struct {
uint16_t x1;
uint16_t y1;
uint16_t x2;
uint16_t y2;
} dispWin_t;
typedef struct {
uint8_t *font;
uint8_t x_size;
uint8_t y_size;
uint8_t offset;
uint16_t numchars;
uint16_t size;
uint8_t max_x_size;
uint8_t bitmap;
color_t color;
} Font_t;
//==========================================================================================
// ==== Global variables ===================================================================
//==========================================================================================
Adjusted for C++. Removed EPD testing code.
2020-01-29 20:51:49 +00:00
extern uint8_t orientation; // current screen orientation
extern uint16_t font_rotate; // current font font_rotate angle (0~395)
extern uint8_t font_transparent; // if not 0 draw fonts transparent
extern uint8_t font_forceFixed; // if not zero force drawing proportional fonts with fixed width
extern uint8_t font_buffered_char;
extern uint8_t font_line_space; // additional spacing between text lines; added to font height
extern uint8_t text_wrap; // if not 0 wrap long text to the new line, else clip
extern color_t _fg; // current foreground color for fonts
extern color_t _bg; // current background for non transparent fonts
extern dispWin_t dispWin; // display clip window
extern float _angleOffset; // angle offset for arc, polygon and line by angle functions
extern Font_t cfont; // Current font structure
extern uint8_t image_debug;
extern int EPD_X; // X position of the next character after EPD_print() function
extern int EPD_Y; // Y position of the next character after EPD_print() function
Import of adapted loboris/ESP32_ePaper_example repository
2020-01-29 17:30:50 +00:00
// =========================================================================================
// Buffer is created during jpeg decode for sending data
// Total size of the buffer is 2 * (JPG_IMAGE_LINE_BUF_SIZE * 3)
// The size must be multiple of 256 bytes !!
#define JPG_IMAGE_LINE_BUF_SIZE 512
// --- Constants for ellipse function ---
#define EPD_ELLIPSE_UPPER_RIGHT 0x01
#define EPD_ELLIPSE_UPPER_LEFT 0x02
#define EPD_ELLIPSE_LOWER_LEFT 0x04
#define EPD_ELLIPSE_LOWER_RIGHT 0x08
// Constants for Arc function
// number representing the maximum angle (e.g. if 100, then if you pass in start=0 and end=50, you get a half circle)
// this can be changed with setArcParams function at runtime
#define DEFAULT_ARC_ANGLE_MAX 360
// rotational offset in degrees defining position of value 0 (-90 will put it at the top of circle)
// this can be changed with setAngleOffset function at runtime
#define DEFAULT_ANGLE_OFFSET -90
#define PI 3.14159265359
#define MIN_POLIGON_SIDES 3
#define MAX_POLIGON_SIDES 60
// === Color names constants ===
#define EPD_BLACK 15
#define EPD_WHITE 0
// === Color invert constants ===
#define INVERT_ON 1
#define INVERT_OFF 0
// === Screen orientation constants ===
#define LANDSCAPE_0 1
#define LANDSCAPE_180 2
// === Special coordinates constants ===
#define CENTER -9003
#define RIGHT -9004
#define BOTTOM -9004
#define LASTX 7000
#define LASTY 8000
// === Embedded fonts constants ===
#define DEFAULT_FONT 0
#define DEJAVU18_FONT 1
#define DEJAVU24_FONT 2
#define UBUNTU16_FONT 3
#define COMIC24_FONT 4
#define MINYA24_FONT 5
#define TOONEY32_FONT 6
#define SMALL_FONT 7
#define FONT_7SEG 8
#define USER_FONT 9 // font will be read from file
// ===== PUBLIC FUNCTIONS =========================================================================
/*
* Draw pixel at given x,y coordinates
*
* Params:
* x: horizontal position
* y: vertical position
* color: pixel color
*/
//------------------------------------------------------
void EPD_drawPixel(int16_t x, int16_t y, color_t color);
/*
* Read pixel color value from display GRAM at given x,y coordinates
*
* Params:
* x: horizontal position
* y: vertical position
*
* Returns:
* pixel color at x,y
*/
//------------------------------------------
color_t EPD_readPixel(int16_t x, int16_t y);
/*
* Draw vertical line at given x,y coordinates
*
* Params:
* x: horizontal start position
* y: vertical start position
* h: line height in pixels
* color: line color
*/
//---------------------------------------------------------------------
void EPD_drawFastVLine(int16_t x, int16_t y, int16_t h, color_t color);
/*
* Draw horizontal line at given x,y coordinates
*
* Params:
* x: horizontal start position
* y: vertical start position
* w: line width in pixels
* color: line color
*/
//---------------------------------------------------------------------
void EPD_drawFastHLine(int16_t x, int16_t y, int16_t w, color_t color);
/*
* Draw line on screen
*
* Params:
* x0: horizontal start position
* y0: vertical start position
* x1: horizontal end position
* y1: vertical end position
* color: line color
*/
//-------------------------------------------------------------------------------
void EPD_drawLine(int16_t x0, int16_t y0, int16_t x1, int16_t y1, color_t color);
/*
* Draw line on screen from (x,y) point at given angle
* Line drawing angle starts at lower right quadrant of the screen and is offseted by
* '_angleOffset' global variable (default: -90 degrees)
*
* Params:
* x: horizontal start position
* y: vertical start position
* start: start offset from (x,y)
* len: length of the line
* angle: line angle in degrees
* color: line color
*/
//-----------------------------------------------------------------------------------------------------------
void EPD_drawLineByAngle(uint16_t x, uint16_t y, uint16_t start, uint16_t len, uint16_t angle, color_t color);
/*
* Fill given rectangular screen region with color
*
* Params:
* x: horizontal rect start position
* y: vertical rect start position
* w: rectangle width
* h: rectangle height
* color: fill color
*/
//---------------------------------------------------------------------------
void EPD_fillRect(int16_t x, int16_t y, int16_t w, int16_t h, color_t color);
/*
* Draw rectangle on screen
*
* Params:
* x: horizontal rect start position
* y: vertical rect start position
* w: rectangle width
* h: rectangle height
* color: rect line color
*/
//------------------------------------------------------------------------------
void EPD_drawRect(uint16_t x1,uint16_t y1,uint16_t w,uint16_t h, color_t color);
/*
* Draw rectangle with rounded corners on screen
*
* Params:
* x: horizontal rect start position
* y: vertical rect start position
* w: rectangle width
* h: rectangle height
* r: corner radius
* color: rectangle color
*/
//----------------------------------------------------------------------------------------------
void EPD_drawRoundRect(int16_t x, int16_t y, uint16_t w, uint16_t h, uint16_t r, color_t color);
/*
* Fill given rectangular screen region with rounded corners with color
*
* Params:
* x: horizontal rect start position
* y: vertical rect start position
* w: rectangle width
* h: rectangle height
* r: corner radius
* color: fill color
*/
//----------------------------------------------------------------------------------------------
void EPD_fillRoundRect(int16_t x, int16_t y, uint16_t w, uint16_t h, uint16_t r, color_t color);
/*
* Fill the whole screen with color
*
* Params:
* color: fill color
*/
//--------------------------------
void EPD_fillScreen(color_t color);
/*
* Fill the current clip window with color
*
* Params:
* color: fill color
*/
//---------------------------------
void EPD_fillWindow(color_t color);
/*
* Draw triangle on screen
*
* Params:
* x0: first triangle point x position
* y0: first triangle point y position
* x0: second triangle point x position
* y0: second triangle point y position
* x0: third triangle point x position
* y0: third triangle point y position
* color: triangle color
*/
//-----------------------------------------------------------------------------------------------------------------
void EPD_drawTriangle(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, color_t color);
/*
* Fill triangular screen region with color
*
* Params:
* x0: first triangle point x position
* y0: first triangle point y position
* x0: second triangle point x position
* y0: second triangle point y position
* x0: third triangle point x position
* y0: third triangle point y position
* color: fill color
*/
//-----------------------------------------------------------------------------------------------------------------
void EPD_fillTriangle(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, color_t color);
/*
* Draw circle on screen
*
* Params:
* x: circle center x position
* y: circle center x position
* r: circle radius
* color: circle color
*/
//-------------------------------------------------------------------
void EPD_drawCircle(int16_t x, int16_t y, int radius, color_t color);
/*
* Fill circle on screen with color
*
* Params:
* x: circle center x position
* y: circle center x position
* r: circle radius
* color: circle fill color
*/
//-------------------------------------------------------------------
void EPD_fillCircle(int16_t x, int16_t y, int radius, color_t color);
/*
* Draw ellipse on screen
*
* Params:
* x0: ellipse center x position
* y0: ellipse center x position
* rx: ellipse horizontal radius
* ry: ellipse vertical radius
* option: drawing options, multiple options can be combined
1 (TFT_ELLIPSE_UPPER_RIGHT) draw upper right corner
2 (TFT_ELLIPSE_UPPER_LEFT) draw upper left corner
4 (TFT_ELLIPSE_LOWER_LEFT) draw lower left corner
8 (TFT_ELLIPSE_LOWER_RIGHT) draw lower right corner
to draw the whole ellipse use option value 15 (1 | 2 | 4 | 8)
*
* color: circle color
*/
//------------------------------------------------------------------------------------------------------
void EPD_drawEllipse(uint16_t x0, uint16_t y0, uint16_t rx, uint16_t ry, color_t color, uint8_t option);
/*
* Fill elliptical region on screen
*
* Params:
* x0: ellipse center x position
* y0: ellipse center x position
* rx: ellipse horizontal radius
* ry: ellipse vertical radius
* option: drawing options, multiple options can be combined
1 (TFT_ELLIPSE_UPPER_RIGHT) fill upper right corner
2 (TFT_ELLIPSE_UPPER_LEFT) fill upper left corner
4 (TFT_ELLIPSE_LOWER_LEFT) fill lower left corner
8 (TFT_ELLIPSE_LOWER_RIGHT) fill lower right corner
to fill the whole ellipse use option value 15 (1 | 2 | 4 | 8)
*
* color: fill color
*/
//------------------------------------------------------------------------------------------------------
void EPD_fillEllipse(uint16_t x0, uint16_t y0, uint16_t rx, uint16_t ry, color_t color, uint8_t option);
/*
* Draw circle arc on screen
* Arc drawing angle starts at lower right quadrant of the screen and is offseted by
* '_angleOffset' global variable (default: -90 degrees)
*
* Params:
* cx: arc center X position
* cy: arc center Y position
* th: thickness of the drawn arc
* ry: arc vertical radius
* start: arc start angle in degrees
* end: arc end angle in degrees
* color: arc outline color
* fillcolor: arc fill color
*/
//----------------------------------------------------------------------------------------------------------------------------
void EPD_drawArc(uint16_t cx, uint16_t cy, uint16_t r, uint16_t th, float start, float end, color_t color, color_t fillcolor);
/*
* Draw polygon on screen
*
* Params:
* cx: polygon center X position
* cy: arc center Y position
* sides: number of polygon sides; MAX_POLIGON_SIDES ~ MAX_POLIGON_SIDES (3 ~ 60)
* diameter: diameter of the circle inside which the polygon is drawn
* color: polygon outline color
* fill: polygon fill color; if same as color, polygon is not filled
* deg: polygon rotation angle; 0 ~ 360
* th: thickness of the polygon outline
*/
//--------------------------------------------------------------------------------------------------------------
void EPD_drawPolygon(int cx, int cy, int sides, int diameter, color_t color, color_t fill, int deg, uint8_t th);
//--------------------------------------------------------------------------------------
//void EPD_drawStar(int cx, int cy, int diameter, color_t color, bool fill, float factor);
/*
* Set the font used for writing the text to display.
*
* ------------------------------------------------------------------------------------
* For 7 segment font only characters 0,1,2,3,4,5,6,7,8,9, . , - , : , / are available.
* Character ‘/‘ draws the degree sign.
* ------------------------------------------------------------------------------------
*
* Params:
* font: font number; use defined font names
* font_file: pointer to font file name; NULL for embeded fonts
*/
//----------------------------------------------------
void EPD_setFont(uint8_t font, const char *font_file);
/*
* Returns current font height & width in pixels.
*
* Params:
* width: pointer to returned font width
* height: pointer to returned font height
*/
//-------------------------------------------
int EPD_getfontsize(int *width, int* height);
/*
* Returns current font height in pixels.
*
*/
//----------------------
int EPD_getfontheight();
/*
* Write text to display.
*
* Rotation of the displayed text depends on 'font_rotate' variable (0~360)
* if 'font_transparent' variable is set to 1, no background pixels will be printed
*
* If the text does not fit the screen width it will be clipped (if text_wrap=0),
* or continued on next line (if text_wrap=1)
*
* Two special characters are allowed in strings:
* ‘\r’ CR (0x0D), clears the display to EOL
* ‘\n’ LF (ox0A), continues to the new line, x=0
*
* Params:
* st: pointer to null terminated string to be printed
* x: horizontal position of the upper left point in pixels
* Special values can be entered:
* CENTER, centers the text
* RIGHT, right justifies the text
* LASTX, continues from last X position; offset can be used: LASTX+n
* y: vertical position of the upper left point in pixels
* Special values can be entered:
* CENTER, centers the text
* BOTTOM, bottom justifies the text
* LASTY, continues from last Y position; offset can be used: LASTY+n
*
*/
//-------------------------------------
void EPD_print(char *st, int x, int y);
/*
* Set atributes for 7 segment vector font
* == 7 segment font must be the current font to this function to have effect ==
*
* Params:
* l: 6~40; distance between bars in pixels
* w: 1~12, max l/2; bar width in pixels
* outline: draw font outline if set to 1
* color: font outline color, only used if outline=1
*
*/
//-------------------------------------------------------------------------
void set_7seg_font_atrib(uint8_t l, uint8_t w, int outline, color_t color);
/*
* Sets the clipping area coordinates.
* All writing to screen is clipped to that area.
* Starting x & y in all functions will be adjusted to the clipping area.
*
* Params:
* x1,y1: upper left point of the clipping area
* x2,y2: bottom right point of the clipping area
*
*/
//----------------------------------------------------------------------
void EPD_setclipwin(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2);
/*
* Resets the clipping area to full screen (0,0),(_wodth,_height)
*
*/
//----------------------
void EPD_resetclipwin();
/*
* Save current clipping area to temporary variable
*
*/
//---------------------
void EPD_saveClipWin();
/*
* Restore current clipping area from temporary variable
*
*/
//------------------------
void EPD_restoreClipWin();
/*
* returns the string width in pixels.
* Useful for positions strings on the screen.
*/
//--------------------------------
int EPD_getStringWidth(char* str);
/*
* Fills the rectangle occupied by string with current background color
*/
void EPD_clearStringRect(int x, int y, char *str);
/*
* Compile font c source file to .fnt file
* which can be used in EPD_setFont() function to select external font
* Created file have the same name as source file and extension .fnt
*
* Params:
* fontfile: pointer to c source font file name; must have .c extension
* dbg: if set to 1, prints debug information
*
* Returns:
* 0 on success
* err no on error
*
*/
//------------------------------------------------
int compile_font_file(char *fontfile, uint8_t dbg);
/*
* Get all font's characters to buffer
*/
void getFontCharacters(uint8_t *buf);
/*
* Decodes and displays JPG image. RGB colors are converted to 4-bit Gray scale
* Limits:
* Baseline only. Progressive and Lossless JPEG format are not supported.
* Image size: Up to 65520 x 65520 pixels
* Color space: YCbCr three components only. Gray scale image is not supported.
* Sampling factor: 4:4:4, 4:2:2 or 4:2:0.
*
* Params:
* x: image left position; constants CENTER & RIGHT can be used; negative value is accepted
* y: image top position; constants CENTER & BOTTOM can be used; negative value is accepted
* scale: image scale factor: 0~3; if scale>0, image is scaled by factor 1/(2^scale) (1/2, 1/4 or 1/8)
* fname: pointer to the name of the file from which the image will be read
* if set to NULL, image will be read from memory buffer pointed to by 'buf'
* buf: pointer to the memory buffer from which the image will be read; used if fname=NULL
* size: size of the memory buffer from which the image will be read; used if fname=NULL & buf!=NULL
*
*/
int EPD_jpg_image(int x, int y, uint8_t scale, char *fname, uint8_t *buf, int size);
Adjusted for C++. Removed EPD testing code.
2020-01-29 20:51:49 +00:00
#ifdef __cplusplus
}
#endif
Import of adapted loboris/ESP32_ePaper_example repository
2020-01-29 17:30:50 +00:00
#endif
Reference in New Issue Copy Permalink