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       1             : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* This Source Code Form is subject to the terms of the Mozilla Public
       3             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       4             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       5             : 
       6             : /* constants for frame state bits and a type to store them in a uint64_t */
       7             : 
       8             : #ifndef nsFrameState_h_
       9             : #define nsFrameState_h_
      10             : 
      11             : #include <stdint.h>
      12             : 
      13             : #ifdef DEBUG
      14             : #include "nsString.h"
      15             : 
      16             : class nsIFrame;
      17             : #endif
      18             : 
      19             : typedef uint64_t nsFrameState_size_t;
      20             : 
      21             : #define NS_FRAME_STATE_BIT(n_) (nsFrameState(nsFrameState_size_t(1) << (n_)))
      22             : 
      23             : enum nsFrameState : nsFrameState_size_t {
      24             : #define FRAME_STATE_BIT(group_, value_, name_) \
      25             :   name_ = NS_FRAME_STATE_BIT(value_),
      26             : #include "nsFrameStateBits.h"
      27             : #undef FRAME_STATE_BIT
      28             : };
      29             : 
      30       32774 : inline nsFrameState operator|(nsFrameState aLeft, nsFrameState aRight)
      31             : {
      32       32774 :   return nsFrameState(nsFrameState_size_t(aLeft) | nsFrameState_size_t(aRight));
      33             : }
      34             : 
      35      249567 : inline nsFrameState operator&(nsFrameState aLeft, nsFrameState aRight)
      36             : {
      37      249567 :   return nsFrameState(nsFrameState_size_t(aLeft) & nsFrameState_size_t(aRight));
      38             : }
      39             : 
      40       13837 : inline nsFrameState& operator|=(nsFrameState& aLeft, nsFrameState aRight)
      41             : {
      42       13837 :   aLeft = aLeft | aRight;
      43       13837 :   return aLeft;
      44             : }
      45             : 
      46        8655 : inline nsFrameState& operator&=(nsFrameState& aLeft, nsFrameState aRight)
      47             : {
      48        8655 :   aLeft = aLeft & aRight;
      49        8655 :   return aLeft;
      50             : }
      51             : 
      52        8655 : inline nsFrameState operator~(nsFrameState aRight)
      53             : {
      54        8655 :   return nsFrameState(~nsFrameState_size_t(aRight));
      55             : }
      56             : 
      57             : inline nsFrameState operator^(nsFrameState aLeft, nsFrameState aRight)
      58             : {
      59             :   return nsFrameState(nsFrameState_size_t(aLeft) ^ nsFrameState_size_t(aRight));
      60             : }
      61             : 
      62             : inline nsFrameState& operator^=(nsFrameState& aLeft, nsFrameState aRight)
      63             : {
      64             :   aLeft = aLeft ^ aRight;
      65             :   return aLeft;
      66             : }
      67             : 
      68             : // Bits 20-31 and 60-63 of the frame state are reserved for implementations.
      69             : #define NS_FRAME_IMPL_RESERVED                      nsFrameState(0xF0000000FFF00000)
      70             : #define NS_FRAME_RESERVED                           ~NS_FRAME_IMPL_RESERVED
      71             : 
      72             : namespace mozilla {
      73             : #ifdef DEBUG
      74             : nsCString GetFrameState(nsIFrame* aFrame);
      75             : void PrintFrameState(nsIFrame* aFrame);
      76             : #endif
      77             : } // namespace mozilla
      78             : 
      79             : #endif /* nsFrameState_h_ */