mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-01 06:35:42 +00:00
76 lines
1.7 KiB
C++
76 lines
1.7 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#ifndef mozilla_BorderCache_h_
|
|
#define mozilla_BorderCache_h_
|
|
|
|
#include "mozilla/gfx/2D.h"
|
|
#include "mozilla/HashFunctions.h"
|
|
#include "nsDataHashtable.h"
|
|
#include "PLDHashTable.h"
|
|
|
|
namespace mozilla {
|
|
// Cache for best overlap and best dashLength.
|
|
|
|
struct FourFloats
|
|
{
|
|
typedef mozilla::gfx::Float Float;
|
|
|
|
Float n[4];
|
|
|
|
FourFloats()
|
|
{
|
|
n[0] = 0.0f;
|
|
n[1] = 0.0f;
|
|
n[2] = 0.0f;
|
|
n[3] = 0.0f;
|
|
}
|
|
|
|
FourFloats(Float a, Float b, Float c, Float d)
|
|
{
|
|
n[0] = a;
|
|
n[1] = b;
|
|
n[2] = c;
|
|
n[3] = d;
|
|
}
|
|
|
|
bool
|
|
operator==(const FourFloats& aOther) const
|
|
{
|
|
return n[0] == aOther.n[0] &&
|
|
n[1] == aOther.n[1] &&
|
|
n[2] == aOther.n[2] &&
|
|
n[3] == aOther.n[3];
|
|
}
|
|
};
|
|
|
|
class FourFloatsHashKey : public PLDHashEntryHdr
|
|
{
|
|
public:
|
|
typedef const FourFloats& KeyType;
|
|
typedef const FourFloats* KeyTypePointer;
|
|
|
|
explicit FourFloatsHashKey(KeyTypePointer aKey) : mValue(*aKey) {}
|
|
FourFloatsHashKey(const FourFloatsHashKey& aToCopy) : mValue(aToCopy.mValue) {}
|
|
~FourFloatsHashKey() {}
|
|
|
|
KeyType GetKey() const { return mValue; }
|
|
bool KeyEquals(KeyTypePointer aKey) const { return *aKey == mValue; }
|
|
|
|
static KeyTypePointer KeyToPointer(KeyType aKey) { return &aKey; }
|
|
static PLDHashNumber HashKey(KeyTypePointer aKey)
|
|
{
|
|
return HashBytes(aKey->n, sizeof(mozilla::gfx::Float) * 4);
|
|
}
|
|
enum { ALLOW_MEMMOVE = true };
|
|
|
|
private:
|
|
const FourFloats mValue;
|
|
};
|
|
|
|
} // namespace mozilla
|
|
|
|
#endif /* mozilla_BorderCache_h_ */
|