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// 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 "ui/gfx/rect_base.h"
#include "base/logging.h"
#include "base/stringprintf.h"
// This file provides the implementation for RectBaese template and
// used to instantiate the base class for Rect and RectF classes.
#if !defined(UI_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 !(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 {
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 {
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()));
}
} // namespace gfx
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