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/* -*- 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/. */
/* constants for frame state bits and a type to store them in a uint64_t */
#ifndef nsFrameState_h_
#define nsFrameState_h_
#include <stdint.h>
#ifdef DEBUG
# include "nsString.h"
class nsIFrame;
#endif
typedef uint64_t nsFrameState_size_t;
#define NS_FRAME_STATE_BIT(n_) (nsFrameState(nsFrameState_size_t(1) << (n_)))
enum nsFrameState : nsFrameState_size_t {
#define FRAME_STATE_BIT(group_, value_, name_) \
name_ = NS_FRAME_STATE_BIT(value_),
#include "nsFrameStateBits.h"
#undef FRAME_STATE_BIT
};
constexpr nsFrameState operator|(nsFrameState aLeft, nsFrameState aRight) {
return nsFrameState(nsFrameState_size_t(aLeft) | nsFrameState_size_t(aRight));
}
constexpr nsFrameState operator&(nsFrameState aLeft, nsFrameState aRight) {
return nsFrameState(nsFrameState_size_t(aLeft) & nsFrameState_size_t(aRight));
}
constexpr nsFrameState& operator|=(nsFrameState& aLeft, nsFrameState aRight) {
aLeft = aLeft | aRight;
return aLeft;
}
constexpr nsFrameState& operator&=(nsFrameState& aLeft, nsFrameState aRight) {
aLeft = aLeft & aRight;
return aLeft;
}
constexpr nsFrameState operator~(nsFrameState aRight) {
return nsFrameState(~nsFrameState_size_t(aRight));
}
constexpr nsFrameState operator^(nsFrameState aLeft, nsFrameState aRight) {
return nsFrameState(nsFrameState_size_t(aLeft) ^ nsFrameState_size_t(aRight));
}
constexpr nsFrameState& operator^=(nsFrameState& aLeft, nsFrameState aRight) {
aLeft = aLeft ^ aRight;
return aLeft;
}
// Bits 20-31 and 60-63 of the frame state are reserved for implementations.
#define NS_FRAME_IMPL_RESERVED nsFrameState(0xF0000000FFF00000)
#define NS_FRAME_RESERVED ~NS_FRAME_IMPL_RESERVED
namespace mozilla {
#ifdef DEBUG
nsCString GetFrameState(nsIFrame* aFrame);
void PrintFrameState(nsIFrame* aFrame);
void DebugVerifyFrameStateBits();
#endif
} // namespace mozilla
#endif /* nsFrameState_h_ */