src/base/coordinates.h

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// Platform-independent structures for points, sizes, and rectangles
#ifndef MOZC_BASE_COORDINATES_H_
#define MOZC_BASE_COORDINATES_H_

namespace mozc {
struct Point {
  int x;
  int y;
  Point(int newx = 0, int newy = 0) : x(newx), y(newy) {}
  Point(const Point &point) : x(point.x), y(point.y) {}
};

struct Size {
  int width;
  int height;
  Size(int newwidth = 0, int newheight = 0)
      : width(newwidth), height(newheight) {}
  Size(const Size &size) : width(size.width), height(size.height) {}
};

struct Rect {
  Point origin;
  Size size;
  Rect(int newx, int newy, int newwidth, int newheight)
      : origin(newx, newy), size(newwidth, newheight) {}
  Rect(const Point &o, const Size &s) : origin(o), size(s) {}
  Rect(const Rect &rect) : origin(rect.origin), size(rect.size) {}
  Rect() {}

  // Accessors
  inline int Width() const { return size.width; }
  inline int Height() const { return size.height; }
  inline int Left() const { return origin.x; }
  inline int Top() const { return origin.y; }
  inline int Right() const { return origin.x + size.width; }
  inline int Bottom() const { return origin.y + size.height; }

  // Other methods
  inline void DeflateRect(int l, int t, int r, int b) {
    origin.x += l;
    origin.y += t;
    size.width -= l + r;
    size.height -= t + b;
  }
  inline void DeflateRect(int x, int y) {
    DeflateRect(x, y, x, y);
  }
  inline void DeflateRect(const Size &s) { DeflateRect(s.width, s.height); }
  // Returns true if the right side is less than or equal to the coordinate
  // of the left side, or the coordinate of the bottom side is less than or
  // equal to the coordinate of the top side.
  // This behaviour is compatible to the IsRectEmpty API
  // http://msdn.microsoft.com/en-us/library/dd145017.aspx
  inline bool IsRectEmpty() const {
    return size.width <= 0 || size.height <= 0;
  }
  inline bool PtrInRect(const Point &p) const {
    return p.x >= origin.x && p.x <= origin.x + size.width &&
        p.y >= origin.y && p.y <= origin.y + size.height;
  }
};
}  // namespace mozc
#endif  // MOZC_BASE_COORDINATES_H_