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#include <libraries/svc/nrf_svci.h>
#include <FreeRTOS.h>
#include <task.h>
#include "Gfx.h"
#include "../../drivers/St7789.h"
using namespace Pinetime::Components;
Gfx::Gfx(Pinetime::Drivers::St7789 &lcd) : lcd{lcd} {
}
void Gfx::Init() {
}
void Gfx::ClearScreen() {
SetBackgroundColor(0x0000);
state.remainingIterations = 240 + 1;
state.currentIteration = 0;
state.busy = true;
state.action = Action::FillRectangle;
state.taskToNotify = xTaskGetCurrentTaskHandle();
lcd.BeginDrawBuffer(0, 0, width, height);
lcd.NextDrawBuffer(reinterpret_cast<const uint8_t *>(buffer), width * 2);
WaitTransferFinished();
}
void Gfx::FillRectangle(uint8_t x, uint8_t y, uint8_t w, uint8_t h, uint16_t color) {
SetBackgroundColor(color);
state.remainingIterations = h;
state.currentIteration = 0;
state.busy = true;
state.action = Action::FillRectangle;
state.color = color;
state.taskToNotify = xTaskGetCurrentTaskHandle();
lcd.BeginDrawBuffer(x, y, w, h);
lcd.NextDrawBuffer(reinterpret_cast<const uint8_t *>(buffer), width * 2);
WaitTransferFinished();
}
void Gfx::FillRectangle(uint8_t x, uint8_t y, uint8_t w, uint8_t h, uint8_t* b) {
state.remainingIterations = h;
state.currentIteration = 0;
state.busy = true;
state.action = Action::FillRectangle;
state.color = 0x00;
state.taskToNotify = xTaskGetCurrentTaskHandle();
lcd.BeginDrawBuffer(x, y, w, h);
lcd.NextDrawBuffer(reinterpret_cast<const uint8_t *>(b), width * 2);
WaitTransferFinished();
}
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);
uint16_t bg = 0x0000;
if (c == ' ') {
*x += font->height / 2;
return;
}
// Build first line
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 + j]) {
buffer[(j*8)+k] = color;
}
else {
buffer[(j*8)+k] = bg;
}
}
}
state.remainingIterations = font->height + 0;
state.currentIteration = 0;
state.busy = true;
state.action = Action::DrawChar;
state.font = const_cast<FONT_INFO *>(font);
state.character = c;
state.color = color;
state.taskToNotify = xTaskGetCurrentTaskHandle();
lcd.BeginDrawBuffer(*x, y, bytes_in_line*8, font->height);
lcd.NextDrawBuffer(reinterpret_cast<const uint8_t *>(&buffer), bytes_in_line*8*2);
WaitTransferFinished();
*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();
}
void Gfx::SetBackgroundColor(uint16_t color) {
for(int i = 0; i < width; i++) {
buffer[i] = color;
}
}
bool Gfx::GetNextBuffer(uint8_t **data, size_t &size) {
if(!state.busy) return false;
state.remainingIterations--;
if (state.remainingIterations == 0) {
state.busy = false;
NotifyEndOfTransfer(state.taskToNotify);
return false;
}
if(state.action == Action::FillRectangle) {
*data = reinterpret_cast<uint8_t *>(buffer);
size = width * 2;
} else if(state.action == Action::DrawChar) {
uint16_t bg = 0x0000;
uint8_t char_idx = state.character - state.font->startChar;
uint16_t bytes_in_line = CEIL_DIV(state.font->charInfo[char_idx].widthBits, 8);
for (uint16_t j = 0; j < bytes_in_line; j++) {
for (uint8_t k = 0; k < 8; k++) {
if ((1 << (7 - k)) & state.font->data[state.font->charInfo[char_idx].offset + ((state.currentIteration+1) * bytes_in_line) + j]) {
buffer[(j*8)+k] = state.color;
}
else {
buffer[(j*8)+k] = bg;
}
}
}
*data = reinterpret_cast<uint8_t *>(buffer);
size = bytes_in_line*8*2;
}
state.currentIteration++;
return true;
}
void Gfx::NotifyEndOfTransfer(TaskHandle_t task) {
if(task != nullptr) {
BaseType_t xHigherPriorityTaskWoken = pdFALSE;
vTaskNotifyGiveFromISR(task, &xHigherPriorityTaskWoken);
portYIELD_FROM_ISR(xHigherPriorityTaskWoken);
}
}
void Gfx::WaitTransferFinished() const {
ulTaskNotifyTake(pdTRUE, 500);
}
void Gfx::SetScrollArea(uint16_t topFixedLines, uint16_t scrollLines, uint16_t bottomFixedLines) {
lcd.VerticalScrollDefinition(topFixedLines, scrollLines, bottomFixedLines);
}
void Gfx::SetScrollStartLine(uint16_t line) {
lcd.VerticalScrollStartAddress(line);
}
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