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// Copyright (c) 2009 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 "base/gfx/rect.h"
#if defined(OS_WIN)
#include <windows.h>
#elif defined(OS_MACOSX)
#include <CoreGraphics/CGGeometry.h>
#elif defined(OS_POSIX)
#include <gdk/gdk.h>
#endif
#include <iostream>
#include "base/logging.h"
namespace {
void AdjustAlongAxis(int dst_origin, int dst_size, int* origin, int* size) {
if (*origin < dst_origin) {
*origin = dst_origin;
*size = std::min(dst_size, *size);
} else {
*size = std::min(dst_size, *size);
*origin = std::min(dst_origin + dst_size, *origin + *size) - *size;
}
}
} // namespace
namespace gfx {
Rect::Rect() {
}
Rect::Rect(int width, int height) {
set_width(width);
set_height(height);
}
Rect::Rect(int x, int y, int width, int height)
: origin_(x, y) {
set_width(width);
set_height(height);
}
Rect::Rect(const gfx::Point& origin, const gfx::Size& size)
: origin_(origin), size_(size) {
}
#if defined(OS_WIN)
Rect::Rect(const RECT& r)
: origin_(r.left, r.top) {
set_width(r.right - r.left);
set_height(r.bottom - r.top);
}
Rect& Rect::operator=(const RECT& r) {
origin_.SetPoint(r.left, r.top);
set_width(r.right - r.left);
set_height(r.bottom - r.top);
return *this;
}
#elif defined(OS_MACOSX)
Rect::Rect(const CGRect& r)
: origin_(r.origin.x, r.origin.y) {
set_width(r.size.width);
set_height(r.size.height);
}
Rect& Rect::operator=(const CGRect& r) {
origin_.SetPoint(r.origin.x, r.origin.y);
set_width(r.size.width);
set_height(r.size.height);
return *this;
}
#elif defined(OS_POSIX)
Rect::Rect(const GdkRectangle& r)
: origin_(r.x, r.y) {
set_width(r.width);
set_height(r.height);
}
Rect& Rect::operator=(const GdkRectangle& r) {
origin_.SetPoint(r.x, r.y);
set_width(r.width);
set_height(r.height);
return *this;
}
#endif
void Rect::set_width(int width) {
size_.set_width(width);
}
void Rect::set_height(int height) {
size_.set_height(height);
}
void Rect::SetRect(int x, int y, int width, int height) {
origin_.SetPoint(x, y);
set_width(width);
set_height(height);
}
void Rect::Inset(int left, int top, int right, int bottom) {
Offset(left, top);
set_width(std::max(width() - left - right, 0));
set_height(std::max(height() - top - bottom, 0));
}
void Rect::Offset(int horizontal, int vertical) {
set_x(x() + horizontal);
set_y(y() + vertical);
}
bool Rect::operator==(const Rect& other) const {
return origin_ == other.origin_ && size_ == other.size_;
}
#if defined(OS_WIN)
RECT Rect::ToRECT() const {
RECT r;
r.left = x();
r.right = right();
r.top = y();
r.bottom = bottom();
return r;
}
#elif defined(OS_MACOSX)
CGRect Rect::ToCGRect() const {
return CGRectMake(x(), y(), width(), height());
}
#elif defined(OS_POSIX)
GdkRectangle Rect::ToGdkRectangle() const {
GdkRectangle r = {x(), y(), width(), height()};
return r;
}
#endif
bool Rect::Contains(int point_x, int point_y) const {
return (point_x >= x()) && (point_x < right()) &&
(point_y >= y()) && (point_y < bottom());
}
bool Rect::Contains(const Rect& rect) const {
return (rect.x() >= x() && rect.right() <= right() &&
rect.y() >= y() && rect.bottom() <= bottom());
}
bool Rect::Intersects(const Rect& rect) const {
return !(rect.x() >= right() || rect.right() <= x() ||
rect.y() >= bottom() || rect.bottom() <= y());
}
Rect Rect::Intersect(const Rect& rect) const {
int rx = std::max(x(), rect.x());
int ry = std::max(y(), rect.y());
int rr = std::min(right(), rect.right());
int rb = std::min(bottom(), rect.bottom());
if (rx >= rr || ry >= rb)
rx = ry = rr = rb = 0; // non-intersecting
return Rect(rx, ry, rr - rx, rb - ry);
}
Rect Rect::Union(const Rect& rect) const {
// special case empty rects...
if (IsEmpty())
return rect;
if (rect.IsEmpty())
return *this;
int rx = std::min(x(), rect.x());
int ry = std::min(y(), rect.y());
int rr = std::max(right(), rect.right());
int rb = std::max(bottom(), rect.bottom());
return Rect(rx, ry, rr - rx, rb - ry);
}
Rect Rect::Subtract(const Rect& rect) const {
// boundary cases:
if (!Intersects(rect))
return *this;
if (rect.Contains(*this))
return Rect();
int rx = x();
int ry = y();
int rr = right();
int 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();
}
}
return Rect(rx, ry, rr - rx, rb - ry);
}
Rect Rect::AdjustToFit(const Rect& rect) const {
int new_x = x();
int new_y = y();
int new_width = width();
int new_height = height();
AdjustAlongAxis(rect.x(), rect.width(), &new_x, &new_width);
AdjustAlongAxis(rect.y(), rect.height(), &new_y, &new_height);
return Rect(new_x, new_y, new_width, new_height);
}
Point Rect::CenterPoint() const {
return Point(x() + (width() + 1) / 2, y() + (height() + 1) / 2);
}
bool Rect::SharesEdgeWith(const gfx::Rect& 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
std::ostream& operator<<(std::ostream& out, const gfx::Rect& r) {
return out << r.origin() << " " << r.size();
}
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