Move geometric types to a separate, more lightweight target.

ui/gfx/rect_base.h

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// A template for a simple rectangle class.  The containment semantics
-// are array-like; that is, the coordinate (x, y) is considered to be
-// contained by the rectangle, but the coordinate (x + width, y) is not.
-// The class will happily let you create malformed rectangles (that is,
-// rectangles with negative width and/or height), but there will be assertions
-// in the operations (such as Contains()) to complain in this case.
-
-#ifndef UI_GFX_RECT_BASE_H_
-#define UI_GFX_RECT_BASE_H_
-
-#include <string>
-
-#include "base/compiler_specific.h"
-
-namespace gfx {
-
-template<typename Class,
-         typename PointClass,
-         typename SizeClass,
-         typename InsetsClass,
-         typename VectorClass,
-         typename Type>
-class GFX_EXPORT RectBase {
- public:
-  Type x() const { return origin_.x(); }
-  void set_x(Type x) { origin_.set_x(x); }
-
-  Type y() const { return origin_.y(); }
-  void set_y(Type y) { origin_.set_y(y); }
-
-  Type width() const { return size_.width(); }
-  void set_width(Type width) { size_.set_width(width); }
-
-  Type height() const { return size_.height(); }
-  void set_height(Type height) { size_.set_height(height); }
-
-  const PointClass& origin() const { return origin_; }
-  void set_origin(const PointClass& origin) { origin_ = origin; }
-
-  const SizeClass& size() const { return size_; }
-  void set_size(const SizeClass& size) { size_ = size; }
-
-  Type right() const { return x() + width(); }
-  Type bottom() const { return y() + height(); }
-
-  PointClass top_right() const { return PointClass(right(), y()); }
-  PointClass bottom_left() const { return PointClass(x(), bottom()); }
-  PointClass bottom_right() const { return PointClass(right(), bottom()); }
-
-  VectorClass OffsetFromOrigin() const {
-    return VectorClass(x(), y());
-  }
-
-  void SetRect(Type x, Type y, Type width, Type height);
-
-  // Shrink the rectangle by a horizontal and vertical distance on all sides.
-  void Inset(Type horizontal, Type vertical) {
-    Inset(horizontal, vertical, horizontal, vertical);
-  }
-
-  // Shrink the rectangle by the given insets.
-  void Inset(const InsetsClass& insets);
-
-  // Shrink the rectangle by the specified amount on each side.
-  void Inset(Type left, Type top, Type right, Type bottom);
-
-  // Move the rectangle by a horizontal and vertical distance.
-  void Offset(Type horizontal, Type vertical);
-  void Offset(const VectorClass& distance) {
-    Offset(distance.x(), distance.y());
-  }
-  void operator+=(const VectorClass& offset);
-  void operator-=(const VectorClass& offset);
-
-  InsetsClass InsetsFrom(const Class& inner) const {
-    return InsetsClass(inner.y() - y(),
-                       inner.x() - x(),
-                       bottom() - inner.bottom(),
-                       right() - inner.right());
-  }
-
-  // Returns true if the area of the rectangle is zero.
-  bool IsEmpty() const { return size_.IsEmpty(); }
-
-  // A rect is less than another rect if its origin is less than
-  // the other rect's origin. If the origins are equal, then the
-  // shortest rect is less than the other. If the origin and the
-  // height are equal, then the narrowest rect is less than.
-  // This comparison is required to use Rects in sets, or sorted
-  // vectors.
-  bool operator<(const Class& other) const;
-
-  // Returns true if the point identified by point_x and point_y falls inside
-  // this rectangle.  The point (x, y) is inside the rectangle, but the
-  // point (x + width, y + height) is not.
-  bool Contains(Type point_x, Type point_y) const;
-
-  // Returns true if the specified point is contained by this rectangle.
-  bool Contains(const PointClass& point) const {
-    return Contains(point.x(), point.y());
-  }
-
-  // Returns true if this rectangle contains the specified rectangle.
-  bool Contains(const Class& rect) const;
-
-  // Returns true if this rectangle intersects the specified rectangle.
-  // An empty rectangle doesn't intersect any rectangle.
-  bool Intersects(const Class& rect) const;
-
-  // Computes the intersection of this rectangle with the given rectangle.
-  void Intersect(const Class& rect);
-
-  // Computes the union of this rectangle with the given rectangle.  The union
-  // is the smallest rectangle containing both rectangles.
-  void Union(const Class& rect);
-
-  // Computes the rectangle resulting from subtracting |rect| from |*this|,
-  // i.e. the bounding rect of |Region(*this) - Region(rect)|.
-  void Subtract(const Class& rect);
-
-  // Fits as much of the receiving rectangle into the supplied rectangle as
-  // possible, becoming the result. For example, if the receiver had
-  // a x-location of 2 and a width of 4, and the supplied rectangle had
-  // an x-location of 0 with a width of 5, the returned rectangle would have
-  // an x-location of 1 with a width of 4.
-  void AdjustToFit(const Class& rect);
-
-  // Returns the center of this rectangle.
-  PointClass CenterPoint() const;
-
-  // Becomes a rectangle that has the same center point but with a size capped
-  // at given |size|.
-  void ClampToCenteredSize(const SizeClass& size);
-
-  // Splits |this| in two halves, |left_half| and |right_half|.
-  void SplitVertically(Class* left_half, Class* right_half) const;
-
-  // Returns true if this rectangle shares an entire edge (i.e., same width or
-  // same height) with the given rectangle, and the rectangles do not overlap.
-  bool SharesEdgeWith(const Class& rect) const;
-
-  // Returns the manhattan distance from the rect to the point. If the point is
-  // inside the rect, returns 0.
-  Type ManhattanDistanceToPoint(const PointClass& point) const;
-
-  // Returns the manhattan distance between the contents of this rect and the
-  // contents of the given rect. That is, if the intersection of the two rects
-  // is non-empty then the function returns 0. If the rects share a side, it
-  // returns the smallest non-zero value appropriate for Type.
-  Type ManhattanInternalDistance(const Class& rect) const;
-
- protected:
-  RectBase(const PointClass& origin, const SizeClass& size)
-      : origin_(origin), size_(size) {}
-  explicit RectBase(const SizeClass& size)
-      : size_(size) {}
-  explicit RectBase(const PointClass& origin)
-      : origin_(origin) {}
-  // Destructor is intentionally made non virtual and protected.
-  // Do not make this public.
-  ~RectBase() {}
-
- private:
-  PointClass origin_;
-  SizeClass size_;
-};
-
-}  // namespace gfx
-
-#endif  // UI_GFX_RECT_BASE_H_