LCDDisplay.hpp

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#pragma once
 
#include <Banks/Bank.hpp>
#include <Display/DisplayElement.hpp>
#include <Display/DisplayInterface.hpp>
#include <MIDI_Inputs/MCU/LCD.hpp>
 
BEGIN_CS_NAMESPACE
 
namespace MCU {

class LCDDisplay : public DisplayElement {
  public:
    LCDDisplay(DisplayInterface &display, LCD<> &lcd, const OutputBank &bank,
               uint8_t track, PixelLocation loc, uint8_t textSize,
               uint16_t color)
        : DisplayElement(display), lcd(lcd), bank(&bank), track(track - 1),
          line(1), x(loc.x), y(loc.y), size(textSize), color(color) {
        lcd.addSubscriber();
    }

    LCDDisplay(DisplayInterface &display, LCD<> &lcd, const OutputBank &bank,
               uint8_t track, uint8_t line, PixelLocation loc, uint8_t textSize,
               uint16_t color)
        : DisplayElement(display), lcd(lcd), bank(&bank), track(track - 1),
          line(line - 1), x(loc.x), y(loc.y), size(textSize), color(color) {
        lcd.addSubscriber();
    }

    LCDDisplay(DisplayInterface &display, LCD<> &lcd, uint8_t track,
               PixelLocation loc, uint8_t textSize, uint16_t color)
        : DisplayElement(display), lcd(lcd), track(track - 1), line(1),
          x(loc.x), y(loc.y), size(textSize), color(color) {
        lcd.addSubscriber();
    }

    LCDDisplay(DisplayInterface &display, LCD<> &lcd, uint8_t track,
               uint8_t line, PixelLocation loc, uint8_t textSize,
               uint16_t color)
        : DisplayElement(display), lcd(lcd), track(track - 1), line(line - 1),
          x(loc.x), y(loc.y), size(textSize), color(color) {
        lcd.addSubscriber();
    }
 
    LCDDisplay(const LCDDisplay &) = delete;
    ~LCDDisplay() { lcd.removeSubscriber(); }
 
    void draw() override {
        // If it's a message across all tracks, don't display anything.
        if (separateTracks()) {
            // Determine the track and line to display
            uint8_t offset = bank ? bank->getOffset() + track : track;
            if (offset > 7)
                ERROR(F("Track out of bounds (") << offset << ')', 0xBA41);
            if (line > 1)
                ERROR(F("Line out of bounds (") << line << ')', 0xBA42);
 
            // Extract the six-character substring for this track.
            const char *text = lcd.getText() + 7 * offset + 56 * line;
            char buffer[7];
            strncpy(buffer, text, 6);
            buffer[6] = '\0';
            // Print it to the display
            display.setCursor(x, y);
            display.setTextSize(size);
            display.setTextColor(color);
            display.print(buffer);
        }
        lcd.clearDirty();
    }
 
    bool getDirty() const override { return lcd.getDirty(); }

    bool separateTracks() const {
        for (uint8_t i = 0; i < 7; ++i) {
            const char *text = lcd.getText() + 7 * i + 56 * line;
            if (text[6] != ' ')
                return false;
        }
        return true;
    }

    void setLine(uint8_t line) { this->line = line - 1; }
 
  private:
    LCD<> &lcd;
    const OutputBank *bank = nullptr;
    uint8_t track;
    uint8_t line;
    int16_t x, y;
    uint8_t size;
    uint16_t color;
};
 
} // namespace MCU
 
END_CS_NAMESPACE