epaper_spi_ssd1677_gray4.h

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#pragma once
 
#include "colorconv.h"
#include "epaper_spi_ssd1677.h"
 
namespace esphome::epaper_spi {
 
class EPaperSSD1677Gray4 : public EPaperSSD1677 {
 public:
  EPaperSSD1677Gray4(const char *name, uint16_t width, uint16_t height, const uint8_t *init_sequence,
                     size_t init_sequence_length)
      : EPaperSSD1677(name, width, height, init_sequence, init_sequence_length, DISPLAY_TYPE_GRAYSCALE) {
    this->row_width_ = (width + 3) / 4;  // 4 pixels per byte
    this->buffer_length_ = (size_t) this->row_width_ * height;
  }
 
  void fill(Color color) override;
  void draw_pixel_at(int x, int y, Color color) override;
 
 protected:
  // A partial update if partial updates are enabled and this is not a full one.
  bool is_partial_push_() const { return this->update_count_ != 0 && this->sent_.is_valid(); }
  bool buffer_is_plane() const override { return false; }
  void plane_row(size_t y, uint8_t *out) override;
  void refresh_screen(bool partial) override;
  bool transfer_data() override;
};
 
}  // namespace esphome::epaper_spi