drawingTypes.h

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#ifndef NSBACI_TYPES_DRAWINGTYPES_H
#define NSBACI_TYPES_DRAWINGTYPES_H
 
#include <cstdint>
#include <memory>
#include <string>
#include <variant>

namespace nsbaci::types {

struct Color {
  uint8_t r = 0;
  uint8_t g = 0;
  uint8_t b = 0;
  uint8_t a = 255;  // Alpha channel for transparency
 
  constexpr Color() = default;
  constexpr Color(uint8_t red, uint8_t green, uint8_t blue, uint8_t alpha = 255)
      : r(red), g(green), b(blue), a(alpha) {}
 
  constexpr bool operator==(const Color& other) const {
    return r == other.r && g == other.g && b == other.b && a == other.a;
  }
};
 
// ============== Predefined Colors ==============
namespace Colors {
inline constexpr Color BLACK{0, 0, 0};
inline constexpr Color WHITE{255, 255, 255};
inline constexpr Color RED{255, 0, 0};
inline constexpr Color GREEN{0, 255, 0};
inline constexpr Color BLUE{0, 0, 255};
inline constexpr Color YELLOW{255, 255, 0};
inline constexpr Color CYAN{0, 255, 255};
inline constexpr Color MAGENTA{255, 0, 255};
inline constexpr Color ORANGE{255, 165, 0};
inline constexpr Color PINK{255, 192, 203};
inline constexpr Color PURPLE{128, 0, 128};
inline constexpr Color GRAY{128, 128, 128};
inline constexpr Color LIGHT_GRAY{192, 192, 192};
inline constexpr Color DARK_GRAY{64, 64, 64};
inline constexpr Color BROWN{139, 69, 19};
}  // namespace Colors

struct Point {
  int32_t x = 0;
  int32_t y = 0;
 
  Point() = default;
  Point(int32_t px, int32_t py) : x(px), y(py) {}
 
  bool operator==(const Point& other) const {
    return x == other.x && y == other.y;
  }
 
  Point operator+(const Point& other) const {
    return Point(x + other.x, y + other.y);
  }
 
  Point operator-(const Point& other) const {
    return Point(x - other.x, y - other.y);
  }
};

struct Size {
  int32_t width = 0;
  int32_t height = 0;
 
  Size() = default;
  Size(int32_t w, int32_t h) : width(w), height(h) {}
};
 
// ============== Shape Definitions ==============

struct Circle {
  Point center;
  int32_t radius = 0;
  bool filled = false;
 
  Circle() = default;
  Circle(Point c, int32_t r, bool fill = false)
      : center(c), radius(r), filled(fill) {}
};

struct Rectangle {
  Point position;  // Top-left corner
  Size size;
  bool filled = false;
 
  Rectangle() = default;
  Rectangle(Point pos, Size s, bool fill = false)
      : position(pos), size(s), filled(fill) {}
  Rectangle(int32_t x, int32_t y, int32_t w, int32_t h, bool fill = false)
      : position(x, y), size(w, h), filled(fill) {}
};

struct Triangle {
  Point p1, p2, p3;
  bool filled = false;
 
  Triangle() = default;
  Triangle(Point a, Point b, Point c, bool fill = false)
      : p1(a), p2(b), p3(c), filled(fill) {}
};

struct Line {
  Point start;
  Point end;
  int32_t thickness = 1;
 
  Line() = default;
  Line(Point s, Point e, int32_t t = 1) : start(s), end(e), thickness(t) {}
};

struct Ellipse {
  Point center;
  int32_t radiusX = 0;
  int32_t radiusY = 0;
  bool filled = false;
 
  Ellipse() = default;
  Ellipse(Point c, int32_t rx, int32_t ry, bool fill = false)
      : center(c), radiusX(rx), radiusY(ry), filled(fill) {}
};

struct Pixel {
  Point position;
 
  Pixel() = default;
  explicit Pixel(Point p) : position(p) {}
  Pixel(int32_t x, int32_t y) : position(x, y) {}
};

struct DrawText {
  Point position;
  std::string content;
  int32_t fontSize = 12;
 
  DrawText() = default;
  DrawText(Point p, std::string text, int32_t size = 12)
      : position(p), content(std::move(text)), fontSize(size) {}
};

using Shape =
    std::variant<Circle, Rectangle, Triangle, Line, Ellipse, Pixel, DrawText>;

struct Drawable {
  Shape shape;
  Color color;
  bool visible = true;
  int32_t zIndex = 0;  // For layering
 
  Drawable() = default;
  Drawable(Shape s, Color c, bool vis = true, int32_t z = 0)
      : shape(std::move(s)), color(c), visible(vis), zIndex(z) {}
};
 
// ============== Drawing Commands ==============

enum class DrawCommandType {
  Clear,         // Clear the canvas
  SetColor,      // Set current drawing color
  SetPosition,   // Set current drawing position
  DrawShape,     // Draw a shape
  Fill,          // Fill the canvas with current color
  SetLineWidth,  // Set line thickness
  Refresh        // Force refresh/redraw
};

struct DrawCommand {
  DrawCommandType type;
  Color color;            // For SetColor
  Point position;         // For SetPosition
  Shape shape;            // For DrawShape
  int32_t lineWidth = 1;  // For SetLineWidth
 
  // Factory methods for convenience
  static DrawCommand clear() {
    DrawCommand cmd;
    cmd.type = DrawCommandType::Clear;
    cmd.color = Color(255, 255, 255);  // Default white
    return cmd;
  }
 
  static DrawCommand clearWithColor(Color c) {
    DrawCommand cmd;
    cmd.type = DrawCommandType::Clear;
    cmd.color = c;
    return cmd;
  }
 
  static DrawCommand setColor(Color c) {
    DrawCommand cmd;
    cmd.type = DrawCommandType::SetColor;
    cmd.color = c;
    return cmd;
  }
 
  static DrawCommand setPosition(Point p) {
    DrawCommand cmd;
    cmd.type = DrawCommandType::SetPosition;
    cmd.position = p;
    return cmd;
  }
 
  static DrawCommand drawShape(Shape s, Color c) {
    DrawCommand cmd;
    cmd.type = DrawCommandType::DrawShape;
    cmd.shape = std::move(s);
    cmd.color = c;
    return cmd;
  }
 
  static DrawCommand fill(Color c) {
    DrawCommand cmd;
    cmd.type = DrawCommandType::Fill;
    cmd.color = c;
    return cmd;
  }
 
  static DrawCommand setLineWidth(int32_t width) {
    DrawCommand cmd;
    cmd.type = DrawCommandType::SetLineWidth;
    cmd.lineWidth = width;
    return cmd;
  }
 
  static DrawCommand refresh() {
    DrawCommand cmd;
    cmd.type = DrawCommandType::Refresh;
    return cmd;
  }
};
 
// ============== Canvas Configuration ==============

struct CanvasConfig {
  Size size{800, 600};                   // Default canvas size
  Color backgroundColor{255, 255, 255};  // Default white background
  std::string title = "NSBACI Canvas";
};
 
// ============== Predefined Positions ==============
// These are resolved at runtime based on canvas size
enum class StandardPosition {
  TopLeft,
  TopCenter,
  TopRight,
  CenterLeft,
  Center,
  CenterRight,
  BottomLeft,
  BottomCenter,
  BottomRight
};

inline Point resolvePosition(StandardPosition pos, Size canvasSize) {
  switch (pos) {
    case StandardPosition::TopLeft:
      return Point(0, 0);
    case StandardPosition::TopCenter:
      return Point(canvasSize.width / 2, 0);
    case StandardPosition::TopRight:
      return Point(canvasSize.width, 0);
    case StandardPosition::CenterLeft:
      return Point(0, canvasSize.height / 2);
    case StandardPosition::Center:
      return Point(canvasSize.width / 2, canvasSize.height / 2);
    case StandardPosition::CenterRight:
      return Point(canvasSize.width, canvasSize.height / 2);
    case StandardPosition::BottomLeft:
      return Point(0, canvasSize.height);
    case StandardPosition::BottomCenter:
      return Point(canvasSize.width / 2, canvasSize.height);
    case StandardPosition::BottomRight:
      return Point(canvasSize.width, canvasSize.height);
    default:
      return Point(0, 0);
  }
}
 
}  // namespace nsbaci::types
 
#endif  // NSBACI_TYPES_DRAWINGTYPES_H