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* Copyright (c) 2012, Google Inc. All rights reserved.
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* in the documentation and/or other materials provided with the
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* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_GEOMETRY_LAYOUT_POINT_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_GEOMETRY_LAYOUT_POINT_H_
#include <iosfwd>
#include "third_party/blink/renderer/platform/geometry/double_point.h"
#include "third_party/blink/renderer/platform/geometry/float_point.h"
#include "third_party/blink/renderer/platform/geometry/layout_size.h"
#include "third_party/blink/renderer/platform/wtf/allocator.h"
#include "third_party/blink/renderer/platform/wtf/forward.h"
namespace blink {
class PLATFORM_EXPORT LayoutPoint {
DISALLOW_NEW();
public:
constexpr LayoutPoint() = default;
constexpr LayoutPoint(LayoutUnit x, LayoutUnit y) : x_(x), y_(y) {}
LayoutPoint(int x, int y) : x_(LayoutUnit(x)), y_(LayoutUnit(y)) {}
LayoutPoint(const IntPoint& point) : x_(point.X()), y_(point.Y()) {}
explicit LayoutPoint(const FloatPoint& point)
: x_(point.X()), y_(point.Y()) {}
explicit LayoutPoint(const DoublePoint& point)
: x_(point.X()), y_(point.Y()) {}
constexpr explicit LayoutPoint(const LayoutSize& size)
: x_(size.Width()), y_(size.Height()) {}
static constexpr LayoutPoint Zero() { return LayoutPoint(); }
constexpr LayoutUnit X() const { return x_; }
constexpr LayoutUnit Y() const { return y_; }
void SetX(LayoutUnit x) { x_ = x; }
void SetY(LayoutUnit y) { y_ = y; }
void Move(const LayoutSize& s) { Move(s.Width(), s.Height()); }
void Move(const IntSize& s) { Move(s.Width(), s.Height()); }
void MoveBy(const LayoutPoint& offset) { Move(offset.X(), offset.Y()); }
void Move(int dx, int dy) { Move(LayoutUnit(dx), LayoutUnit(dy)); }
void Move(LayoutUnit dx, LayoutUnit dy) {
x_ += dx;
y_ += dy;
}
void Scale(float sx, float sy) {
x_ *= sx;
y_ *= sy;
}
LayoutPoint ExpandedTo(const LayoutPoint&) const;
LayoutPoint ShrunkTo(const LayoutPoint&) const;
void ClampNegativeToZero() { *this = ExpandedTo(Zero()); }
LayoutPoint TransposedPoint() const { return LayoutPoint(y_, x_); }
String ToString() const;
private:
LayoutUnit x_, y_;
};
ALWAYS_INLINE LayoutPoint& operator+=(LayoutPoint& a, const LayoutSize& b) {
a.Move(b.Width(), b.Height());
return a;
}
ALWAYS_INLINE LayoutPoint& operator+=(LayoutPoint& a, const LayoutPoint& b) {
a.Move(b.X(), b.Y());
return a;
}
inline LayoutPoint& operator+=(LayoutPoint& a, const IntSize& b) {
a.Move(b.Width(), b.Height());
return a;
}
ALWAYS_INLINE LayoutPoint& operator-=(LayoutPoint& a, const LayoutPoint& b) {
a.Move(-b.X(), -b.Y());
return a;
}
ALWAYS_INLINE LayoutPoint& operator-=(LayoutPoint& a, const LayoutSize& b) {
a.Move(-b.Width(), -b.Height());
return a;
}
inline LayoutPoint& operator-=(LayoutPoint& a, const IntSize& b) {
a.Move(-b.Width(), -b.Height());
return a;
}
inline LayoutPoint operator+(const LayoutPoint& a, const LayoutSize& b) {
return LayoutPoint(a.X() + b.Width(), a.Y() + b.Height());
}
ALWAYS_INLINE LayoutPoint operator+(const LayoutPoint& a,
const LayoutPoint& b) {
return LayoutPoint(a.X() + b.X(), a.Y() + b.Y());
}
ALWAYS_INLINE LayoutSize operator-(const LayoutPoint& a, const LayoutPoint& b) {
return LayoutSize(a.X() - b.X(), a.Y() - b.Y());
}
ALWAYS_INLINE LayoutSize operator-(const LayoutPoint& a, const IntPoint& b) {
return LayoutSize(a.X() - b.X(), a.Y() - b.Y());
}
inline LayoutPoint operator-(const LayoutPoint& a, const LayoutSize& b) {
return LayoutPoint(a.X() - b.Width(), a.Y() - b.Height());
}
inline LayoutPoint operator-(const LayoutPoint& a, const IntSize& b) {
return LayoutPoint(a.X() - b.Width(), a.Y() - b.Height());
}
inline LayoutPoint operator-(const LayoutPoint& point) {
return LayoutPoint(-point.X(), -point.Y());
}
constexpr ALWAYS_INLINE bool operator==(const LayoutPoint& a,
const LayoutPoint& b) {
return a.X() == b.X() && a.Y() == b.Y();
}
constexpr bool operator!=(const LayoutPoint& a, const LayoutPoint& b) {
return !(a == b);
}
constexpr inline LayoutPoint ToPoint(const LayoutSize& size) {
return LayoutPoint(size.Width(), size.Height());
}
constexpr inline LayoutPoint ToLayoutPoint(const LayoutSize& p) {
return LayoutPoint(p.Width(), p.Height());
}
constexpr inline LayoutSize ToSize(const LayoutPoint& a) {
return LayoutSize(a.X(), a.Y());
}
inline IntPoint FlooredIntPoint(const LayoutPoint& point) {
return IntPoint(point.X().Floor(), point.Y().Floor());
}
inline IntPoint RoundedIntPoint(const LayoutPoint& point) {
return IntPoint(point.X().Round(), point.Y().Round());
}
inline IntPoint RoundedIntPoint(const LayoutSize& size) {
return IntPoint(size.Width().Round(), size.Height().Round());
}
inline IntPoint CeiledIntPoint(const LayoutPoint& point) {
return IntPoint(point.X().Ceil(), point.Y().Ceil());
}
inline LayoutPoint FlooredLayoutPoint(const FloatPoint& p) {
return LayoutPoint(LayoutUnit::FromFloatFloor(p.X()),
LayoutUnit::FromFloatFloor(p.Y()));
}
inline LayoutPoint CeiledLayoutPoint(const FloatPoint& p) {
return LayoutPoint(LayoutUnit::FromFloatCeil(p.X()),
LayoutUnit::FromFloatCeil(p.Y()));
}
inline IntSize PixelSnappedIntSize(const LayoutSize& s, const LayoutPoint& p) {
return IntSize(SnapSizeToPixel(s.Width(), p.X()),
SnapSizeToPixel(s.Height(), p.Y()));
}
inline IntSize RoundedIntSize(const LayoutPoint& p) {
return IntSize(p.X().Round(), p.Y().Round());
}
inline LayoutSize ToLayoutSize(const LayoutPoint& p) {
return LayoutSize(p.X(), p.Y());
}
inline LayoutPoint FlooredLayoutPoint(const FloatSize& s) {
return FlooredLayoutPoint(FloatPoint(s));
}
PLATFORM_EXPORT std::ostream& operator<<(std::ostream&, const LayoutPoint&);
PLATFORM_EXPORT WTF::TextStream& operator<<(WTF::TextStream&,
const LayoutPoint&);
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_GEOMETRY_LAYOUT_POINT_H_