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#include <libraries/svc/nrf_svci.h>
#include "Gfx.h"
#include "../../drivers/St7789.h"
using namespace Pinetime::Components;
Gfx::Gfx(Pinetime::Drivers::St7789 &lcd) : lcd{lcd} {
}
void Gfx::Init() {
lcd.Init();
}
void Gfx::ClearScreen() {
lcd.FillRectangle(0, 0, width, height, 0x0000);
}
void Gfx::FillRectangle(uint8_t x, uint8_t y, uint8_t width, uint8_t height, uint16_t color) {
lcd.FillRectangle(x, y, width, height, color);
}
void Gfx::DrawString(uint8_t x, uint8_t y, uint16_t color, const char *text, const FONT_INFO *p_font, bool wrap) {
if (y > (height - p_font->height)) {
// Not enough space to write even single char.
return;
}
uint8_t current_x = x;
uint8_t current_y = y;
for (size_t i = 0; text[i] != '\0'; i++) {
if (text[i] == '\n') {
current_x = x;
current_y += p_font->height + p_font->height / 10;
} else {
DrawChar(p_font, (uint8_t) text[i], ¤t_x, current_y, color);
}
uint8_t char_idx = text[i] - p_font->startChar;
uint16_t char_width = text[i] == ' ' ? (p_font->height / 2) : p_font->charInfo[char_idx].widthBits;
if (current_x > (width - char_width)) {
if (wrap) {
current_x = x;
current_y += p_font->height + p_font->height / 10;
} else {
break;
}
if (y > (height - p_font->height)) {
break;
}
}
}
}
void Gfx::DrawChar(const FONT_INFO *font, uint8_t c, uint8_t *x, uint8_t y, uint16_t color) {
uint8_t char_idx = c - font->startChar;
uint16_t bytes_in_line = CEIL_DIV(font->charInfo[char_idx].widthBits, 8);
if (c == ' ') {
*x += font->height / 2;
return;
}
// TODO For now, LCD and SPI driver start a new transfer (cs pin + set address windows + write byte) FOR EACH PIXEL!
// This could be improved by setting CS pin, DC pin and address window ONLY ONCE for the whole character
lcd.BeginDrawBuffer(*x, y, bytes_in_line*8, font->height);
uint16_t bg = 0x0000;
for (uint16_t i = 0; i < font->height; i++) {
for (uint16_t j = 0; j < bytes_in_line; j++) {
for (uint8_t k = 0; k < 8; k++) {
if ((1 << (7 - k)) &
font->data[font->charInfo[char_idx].offset + i * bytes_in_line + j]) {
lcd.NextDrawBuffer(reinterpret_cast<uint8_t *>(&color), 2);
}
else {
lcd.NextDrawBuffer(reinterpret_cast<uint8_t *>(&bg), 2);
}
}
}
}
lcd.EndDrawBuffer();
*x += font->charInfo[char_idx].widthBits + font->spacePixels;
}
void Gfx::pixel_draw(uint8_t x, uint8_t y, uint16_t color) {
lcd.DrawPixel(x, y, color);
}
void Gfx::Sleep() {
lcd.Sleep();
}
void Gfx::Wakeup() {
lcd.Wakeup();
}
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