diff options
Diffstat (limited to 'src/components/gfx')
-rw-r--r-- | src/components/gfx/Gfx.cpp | 207 | ||||
-rw-r--r-- | src/components/gfx/Gfx.h | 60 |
2 files changed, 267 insertions, 0 deletions
diff --git a/src/components/gfx/Gfx.cpp b/src/components/gfx/Gfx.cpp new file mode 100644 index 00000000..3c5dbfb7 --- /dev/null +++ b/src/components/gfx/Gfx.cpp @@ -0,0 +1,207 @@ +#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); + WaitTransfertFinished(); + +} + +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); + + WaitTransfertFinished(); +} + +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); + + WaitTransfertFinished(); +} + +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); + WaitTransfertFinished(); + + *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; + NotifyEndOfTransfert(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::NotifyEndOfTransfert(TaskHandle_t task) { + if(task != nullptr) { + BaseType_t xHigherPriorityTaskWoken = pdFALSE; + vTaskNotifyGiveFromISR(task, &xHigherPriorityTaskWoken); + portYIELD_FROM_ISR(xHigherPriorityTaskWoken); + } +} + +void Gfx::WaitTransfertFinished() 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); +} + diff --git a/src/components/gfx/Gfx.h b/src/components/gfx/Gfx.h new file mode 100644 index 00000000..091f06f5 --- /dev/null +++ b/src/components/gfx/Gfx.h @@ -0,0 +1,60 @@ +#pragma once +#include <cstdint> +#include <nrf_font.h> +#include <drivers/BufferProvider.h> +#include <FreeRTOS.h> +#include <task.h> + + +namespace Pinetime { + namespace Drivers { + class St7789; + } + namespace Components { + class Gfx : public Pinetime::Drivers::BufferProvider { + public: + explicit Gfx(Drivers::St7789& lcd); + void Init(); + void ClearScreen(); + void DrawString(uint8_t x, uint8_t y, uint16_t color, const char* text, const FONT_INFO *p_font, bool wrap); + void DrawChar(const FONT_INFO *font, uint8_t c, uint8_t *x, uint8_t y, uint16_t color); + void FillRectangle(uint8_t x, uint8_t y, uint8_t width, uint8_t height, uint16_t color); + void FillRectangle(uint8_t x, uint8_t y, uint8_t w, uint8_t h, uint8_t* b); + void SetScrollArea(uint16_t topFixedLines, uint16_t scrollLines, uint16_t bottomFixedLines); + void SetScrollStartLine(uint16_t line); + + + void Sleep(); + void Wakeup(); + bool GetNextBuffer(uint8_t **buffer, size_t &size) override; + void pixel_draw(uint8_t x, uint8_t y, uint16_t color); + + + private: + static constexpr uint8_t width = 240; + static constexpr uint8_t height = 240; + + enum class Action { None, FillRectangle, DrawChar}; + struct State { + State() : busy{false}, action{Action::None}, remainingIterations{0}, currentIteration{0} {} + volatile bool busy; + volatile Action action; + volatile uint16_t remainingIterations; + volatile uint16_t currentIteration; + volatile FONT_INFO *font; + volatile uint16_t color; + volatile uint8_t character; + volatile TaskHandle_t taskToNotify = nullptr; + }; + + volatile State state; + + uint16_t buffer[width]; // 1 line buffer + Drivers::St7789& lcd; + + void SetBackgroundColor(uint16_t color); + void WaitTransfertFinished() const; + void NotifyEndOfTransfert(TaskHandle_t task); + }; + } +} |