Graphics Library

Graphics Library API reference. More...

Modules
	Basic Library Configuration
	Basic Library Configuration API Reference.
	Drawing Images
	Image Drawing API.
	Image Graphics Format Handlers
	Declaration of function open for user redefinition.
	Drawing Shapes
	Shape Drawing API.
	Writing Text
	Text Writing API.

Detailed Description

API for configuring and manipulating Graphics library.

Example

 
#include "gl.h"
#include "board.h"
#include "tft8.h"
 
static gl_driver_t driver;
static tft8_cfg_t tft_cfg;
 
void main()
{
 // initialize driver
 TFT8_MAP_PINOUTS_16BIT(tft_cfg);
 tft_cfg.board = &TFT_BOARD_7_CAPACITIVE; 
 tft8_init(&tft_cfg, &driver);
 
 // prepare display for drawing
 gl_set_driver(&driver); // set initialized driver
 gl_clear(GL_ALICE_BLUE); // clear display
 
 // it's not necessary to set crop borders, by default they cover the whole screen
 // dont think about display dimension, make it wrong and let it be set according to display measures from driver.
 gl_set_crop_borders(-1, -1, 1050, 1000); 
 
 gl_set_pen(GL_ORANGE, 10); // set thicker orange pen (outline of the shape)
 gl_set_brush_color(GL_YELLOW); // brush color (inside the shape)
 gl_draw_circle(10,10,100);
 
 // if you want to adjust drawing to fit your screen better
 // you can use gl_get_screen_width() and gl_get_screen_height()
 // for better coordinate manipulation
 
 gl_set_pen_width(0); // disable pen (shape outline)
 
 gl_set_brush_style(GL_BRUSH_STYLE_GRADIENT_TOP_DOWN); // you can use gradient styles for coloring
 gl_set_brush_color_from(GL_GREEN);
 gl_set_brush_color_to(GL_LIGHT_GREEN); 
 gl_draw_rect(0,gl_get_screen_height()/2, gl_get_screen_width(), gl_get_screen_height()/2);
 
 gl_set_pen(GL_BLACK, 10);
 // objects with no area use pen only, such as lines and points
 gl_draw_line(200,140,160,190);
 gl_draw_line(200,140,240,190);
 gl_draw_line(200,220,160,290);
 gl_draw_line(200,220,240,290);
 
 gl_set_brush_color(GL_BLUE); 
 gl_set_brush_style(GL_BRUSH_STYLE_FILL);
 gl_draw_rect_rounded(190,128,20,100,5);
 gl_set_brush_color(GL_PINK);
 gl_draw_circle(200,100,30);
}