DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Mercurial (409f3966645a)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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() = default;

  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_ */