gfx: Don't template gfx::Rect and gfx::RectF

ui/gfx/geometry/rect_base_impl.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.
-
-#include <limits>
-
-#include "base/logging.h"
-#include "base/strings/stringprintf.h"
-#include "ui/gfx/geometry/rect_base.h"
-
-// This file provides the implementation for RectBaese template and
-// used to instantiate the base class for Rect and RectF classes.
-#if !defined(GFX_IMPLEMENTATION)
-#error "This file is intended for UI implementation only"
-#endif
-
-namespace {
-
-template<typename Type>
-void AdjustAlongAxis(Type dst_origin, Type dst_size, Type* origin, Type* size) {
-  *size = std::min(dst_size, *size);
-  if (*origin < dst_origin)
-    *origin = dst_origin;
-  else
-    *origin = std::min(dst_origin + dst_size, *origin + *size) - *size;
-}
-
-} // namespace
-
-namespace gfx {
-
-template<typename Class,
-         typename PointClass,
-         typename SizeClass,
-         typename InsetsClass,
-         typename VectorClass,
-         typename Type>
-void RectBase<Class, PointClass, SizeClass, InsetsClass, VectorClass, Type>::
-    SetRect(Type x, Type y, Type width, Type height) {
-  origin_.SetPoint(x, y);
-  set_width(width);
-  set_height(height);
-}
-
-template<typename Class,
-         typename PointClass,
-         typename SizeClass,
-         typename InsetsClass,
-         typename VectorClass,
-         typename Type>
-void RectBase<Class, PointClass, SizeClass, InsetsClass, VectorClass, Type>::
-    Inset(const InsetsClass& insets) {
-  Inset(insets.left(), insets.top(), insets.right(), insets.bottom());
-}
-
-template<typename Class,
-         typename PointClass,
-         typename SizeClass,
-         typename InsetsClass,
-         typename VectorClass,
-         typename Type>
-void RectBase<Class, PointClass, SizeClass, InsetsClass, VectorClass, Type>::
-    Inset(Type left, Type top, Type right, Type bottom) {
-  origin_ += VectorClass(left, top);
-  set_width(std::max(width() - left - right, static_cast<Type>(0)));
-  set_height(std::max(height() - top - bottom, static_cast<Type>(0)));
-}
-
-template<typename Class,
-         typename PointClass,
-         typename SizeClass,
-         typename InsetsClass,
-         typename VectorClass,
-         typename Type>
-void RectBase<Class, PointClass, SizeClass, InsetsClass, VectorClass, Type>::
-    Offset(Type horizontal, Type vertical) {
-  origin_ += VectorClass(horizontal, vertical);
-}
-
-template<typename Class,
-         typename PointClass,
-         typename SizeClass,
-         typename InsetsClass,
-         typename VectorClass,
-         typename Type>
-void RectBase<Class, PointClass, SizeClass, InsetsClass, VectorClass, Type>::
-    operator+=(const VectorClass& offset) {
-  origin_ += offset;
-}
-
-template<typename Class,
-         typename PointClass,
-         typename SizeClass,
-         typename InsetsClass,
-         typename VectorClass,
-         typename Type>
-void RectBase<Class, PointClass, SizeClass, InsetsClass, VectorClass, Type>::
-    operator-=(const VectorClass& offset) {
-  origin_ -= offset;
-}
-
-template<typename Class,
-         typename PointClass,
-         typename SizeClass,
-         typename InsetsClass,
-         typename VectorClass,
-         typename Type>
-bool RectBase<Class, PointClass, SizeClass, InsetsClass, VectorClass, Type>::
-    operator<(const Class& other) const {
-  if (origin_ == other.origin_) {
-    if (width() == other.width()) {
-      return height() < other.height();
-    } else {
-      return width() < other.width();
-    }
-  } else {
-    return origin_ < other.origin_;
-  }
-}
-
-template<typename Class,
-         typename PointClass,
-         typename SizeClass,
-         typename InsetsClass,
-         typename VectorClass,
-         typename Type>
-bool RectBase<Class, PointClass, SizeClass, InsetsClass, VectorClass, Type>::
-    Contains(Type point_x, Type point_y) const {
-  return (point_x >= x()) && (point_x < right()) &&
-         (point_y >= y()) && (point_y < bottom());
-}
-
-template<typename Class,
-         typename PointClass,
-         typename SizeClass,
-         typename InsetsClass,
-         typename VectorClass,
-         typename Type>
-bool RectBase<Class, PointClass, SizeClass, InsetsClass, VectorClass, Type>::
-    Contains(const Class& rect) const {
-  return (rect.x() >= x() && rect.right() <= right() &&
-          rect.y() >= y() && rect.bottom() <= bottom());
-}
-
-template<typename Class,
-         typename PointClass,
-         typename SizeClass,
-         typename InsetsClass,
-         typename VectorClass,
-         typename Type>
-bool RectBase<Class, PointClass, SizeClass, InsetsClass, VectorClass, Type>::
-    Intersects(const Class& rect) const {
-  return !(IsEmpty() || rect.IsEmpty() ||
-           rect.x() >= right() || rect.right() <= x() ||
-           rect.y() >= bottom() || rect.bottom() <= y());
-}
-
-template<typename Class,
-         typename PointClass,
-         typename SizeClass,
-         typename InsetsClass,
-         typename VectorClass,
-         typename Type>
-void RectBase<Class, PointClass, SizeClass, InsetsClass, VectorClass, Type>::
-    Intersect(const Class& rect) {
-  if (IsEmpty() || rect.IsEmpty()) {
-    SetRect(0, 0, 0, 0);
-    return;
-  }
-
-  Type rx = std::max(x(), rect.x());
-  Type ry = std::max(y(), rect.y());
-  Type rr = std::min(right(), rect.right());
-  Type rb = std::min(bottom(), rect.bottom());
-
-  if (rx >= rr || ry >= rb)
-    rx = ry = rr = rb = 0;  // non-intersecting
-
-  SetRect(rx, ry, rr - rx, rb - ry);
-}
-
-template<typename Class,
-         typename PointClass,
-         typename SizeClass,
-         typename InsetsClass,
-         typename VectorClass,
-         typename Type>
-void RectBase<Class, PointClass, SizeClass, InsetsClass, VectorClass, Type>::
-    Union(const Class& rect) {
-  if (IsEmpty()) {
-    *this = rect;
-    return;
-  }
-  if (rect.IsEmpty())
-    return;
-
-  Type rx = std::min(x(), rect.x());
-  Type ry = std::min(y(), rect.y());
-  Type rr = std::max(right(), rect.right());
-  Type rb = std::max(bottom(), rect.bottom());
-
-  SetRect(rx, ry, rr - rx, rb - ry);
-}
-
-template<typename Class,
-         typename PointClass,
-         typename SizeClass,
-         typename InsetsClass,
-         typename VectorClass,
-         typename Type>
-void RectBase<Class, PointClass, SizeClass, InsetsClass, VectorClass, Type>::
-    Subtract(const Class& rect) {
-  if (!Intersects(rect))
-    return;
-  if (rect.Contains(*static_cast<const Class*>(this))) {
-    SetRect(0, 0, 0, 0);
-    return;
-  }
-
-  Type rx = x();
-  Type ry = y();
-  Type rr = right();
-  Type rb = bottom();
-
-  if (rect.y() <= y() && rect.bottom() >= bottom()) {
-    // complete intersection in the y-direction
-    if (rect.x() <= x()) {
-      rx = rect.right();
-    } else if (rect.right() >= right()) {
-      rr = rect.x();
-    }
-  } else if (rect.x() <= x() && rect.right() >= right()) {
-    // complete intersection in the x-direction
-    if (rect.y() <= y()) {
-      ry = rect.bottom();
-    } else if (rect.bottom() >= bottom()) {
-      rb = rect.y();
-    }
-  }
-  SetRect(rx, ry, rr - rx, rb - ry);
-}
-
-template<typename Class,
-         typename PointClass,
-         typename SizeClass,
-         typename InsetsClass,
-         typename VectorClass,
-         typename Type>
-void RectBase<Class, PointClass, SizeClass, InsetsClass, VectorClass, Type>::
-    AdjustToFit(const Class& rect) {
-  Type new_x = x();
-  Type new_y = y();
-  Type new_width = width();
-  Type new_height = height();
-  AdjustAlongAxis(rect.x(), rect.width(), &new_x, &new_width);
-  AdjustAlongAxis(rect.y(), rect.height(), &new_y, &new_height);
-  SetRect(new_x, new_y, new_width, new_height);
-}
-
-template<typename Class,
-         typename PointClass,
-         typename SizeClass,
-         typename InsetsClass,
-         typename VectorClass,
-         typename Type>
-PointClass RectBase<Class, PointClass, SizeClass, InsetsClass, VectorClass,
-    Type>::CenterPoint() const {
-  return PointClass(x() + width() / 2, y() + height() / 2);
-}
-
-template<typename Class,
-         typename PointClass,
-         typename SizeClass,
-         typename InsetsClass,
-         typename VectorClass,
-         typename Type>
-void RectBase<Class, PointClass, SizeClass, InsetsClass, VectorClass, Type>::
-    ClampToCenteredSize(const SizeClass& size) {
-  Type new_width = std::min(width(), size.width());
-  Type new_height = std::min(height(), size.height());
-  Type new_x = x() + (width() - new_width) / 2;
-  Type new_y = y() + (height() - new_height) / 2;
-  SetRect(new_x, new_y, new_width, new_height);
-}
-
-template<typename Class,
-         typename PointClass,
-         typename SizeClass,
-         typename InsetsClass,
-         typename VectorClass,
-         typename Type>
-void RectBase<Class, PointClass, SizeClass, InsetsClass, VectorClass, Type>::
-    SplitVertically(Class* left_half, Class* right_half) const {
-  DCHECK(left_half);
-  DCHECK(right_half);
-
-  left_half->SetRect(x(), y(), width() / 2, height());
-  right_half->SetRect(left_half->right(),
-                      y(),
-                      width() - left_half->width(),
-                      height());
-}
-
-template<typename Class,
-         typename PointClass,
-         typename SizeClass,
-         typename InsetsClass,
-         typename VectorClass,
-         typename Type>
-bool RectBase<Class, PointClass, SizeClass, InsetsClass, VectorClass, Type>::
-    SharesEdgeWith(const Class& rect) const {
-  return (y() == rect.y() && height() == rect.height() &&
-             (x() == rect.right() || right() == rect.x())) ||
-         (x() == rect.x() && width() == rect.width() &&
-             (y() == rect.bottom() || bottom() == rect.y()));
-}
-
-template<typename Class,
-         typename PointClass,
-         typename SizeClass,
-         typename InsetsClass,
-         typename VectorClass,
-         typename Type>
-Type RectBase<Class, PointClass, SizeClass, InsetsClass, VectorClass, Type>::
-    ManhattanDistanceToPoint(const PointClass& point) const {
-  Type x_distance = std::max<Type>(0, std::max(
-      x() - point.x(), point.x() - right()));
-  Type y_distance = std::max<Type>(0, std::max(
-      y() - point.y(), point.y() - bottom()));
-
-  return x_distance + y_distance;
-}
-
-template<typename Class,
-         typename PointClass,
-         typename SizeClass,
-         typename InsetsClass,
-         typename VectorClass,
-         typename Type>
-Type RectBase<Class, PointClass, SizeClass, InsetsClass, VectorClass, Type>::
-    ManhattanInternalDistance(const Class& rect) const {
-  Class c(x(), y(), width(), height());
-  c.Union(rect);
-
-  static const Type kEpsilon = std::numeric_limits<Type>::is_integer
-                                   ? 1
-                                   : std::numeric_limits<Type>::epsilon();
-
-  Type x = std::max<Type>(0, c.width() - width() - rect.width() + kEpsilon);
-  Type y = std::max<Type>(0, c.height() - height() - rect.height() + kEpsilon);
-  return x + y;
-}
-
-}  // namespace gfx