SpeechBalloon.h

// Copyright (c) Shinya Ishikawa. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full
// license information.
 
#pragma once
#include <M5Unified.h>
 
#include "Drawable.h"
#include "ColorPalette.h"
 
#ifndef ARDUINO
#include <string>
typedef std::string String;
#endif // ARDUINO
 
const int16_t TEXT_HEIGHT = 8;
const int16_t TEXT_SIZE = 2;
const int16_t MIN_WIDTH = 40;
const int cx = 240;
const int cy = 220;
 
namespace stackchan::display
{
  class SpeechBalloon final : public Drawable
  {
  protected:
    std::string text_;
    const lgfx::IFont *font_;
 
  public:
    // constructor
    SpeechBalloon() = default;
    ~SpeechBalloon() = default;
    SpeechBalloon(const SpeechBalloon &other) = default;
    SpeechBalloon &operator=(const SpeechBalloon &other) = default;
 
    void setText(const std::string &text)
    {
      text_ = text;
    }
    void draw(M5Canvas &canvas) override
    {
      // This method is intentionally left empty. The actual drawing logic is implemented in the overloaded draw method that takes a ColorPalette parameter.
    }
 
    void draw(M5Canvas &canvas, ColorPalette &cp)
    {
      if (text_.length() == 0)
      {
        return;
      }
 
      uint16_t primaryColor = canvas.getColorDepth() == 1
                                  ? 1
                                  : cp.get(DrawingLocation::kBalloonForeground);
      uint16_t backgroundColor = canvas.getColorDepth() == 1
                                     ? 0
                                     : cp.get(DrawingLocation::kBalloonBackground);
      M5.Lcd.setTextSize(TEXT_SIZE);
      M5.Lcd.setTextDatum(MC_DATUM);
      canvas.setTextSize(TEXT_SIZE);
      canvas.setTextColor(primaryColor, backgroundColor);
      canvas.setTextDatum(MC_DATUM);
      M5.Lcd.setFont(font_);
      int textWidth = M5.Lcd.textWidth(text_.c_str());
      int textHeight = TEXT_HEIGHT * TEXT_SIZE;
      canvas.fillEllipse(cx - 20, cy, textWidth + 2, textHeight * 2 + 2,
                         primaryColor);
      canvas.fillTriangle(cx - 62, cy - 42, cx - 8, cy - 10, cx - 41, cy - 8,
                          primaryColor);
      canvas.fillEllipse(cx - 20, cy, textWidth, textHeight * 2,
                         backgroundColor);
      canvas.fillTriangle(cx - 60, cy - 40, cx - 10, cy - 10, cx - 40, cy - 10,
                          backgroundColor);
      canvas.drawString(text_.c_str(), cx - textWidth / 6 - 15, cy, font_); // Continue printing from new x position
    }
  };
 
} // namespace stackchan::display