ref: 0.12.0
src/components/gfx/Gfx.cpp
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#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); } |