michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef nsAutoLayoutPhase_h
michael@0: #define nsAutoLayoutPhase_h
michael@0: 
michael@0: #ifdef DEBUG
michael@0: 
michael@0: // We can't forward declare an enum before C++11 which means we have to include
michael@0: // nsPresContext.h just because nsLayoutPhase is passed to the ctor.
michael@0: #include "nsPresContext.h"
michael@0: 
michael@0: struct nsAutoLayoutPhase {
michael@0:   nsAutoLayoutPhase(nsPresContext* aPresContext, nsLayoutPhase aPhase);
michael@0:   ~nsAutoLayoutPhase();
michael@0: 
michael@0:   void Enter();
michael@0:   void Exit();
michael@0: 
michael@0: private:
michael@0:   nsPresContext* mPresContext;
michael@0:   nsLayoutPhase mPhase;
michael@0:   uint32_t mCount;
michael@0: };
michael@0: 
michael@0: #define AUTO_LAYOUT_PHASE_ENTRY_POINT(pc_, phase_) \
michael@0:   nsAutoLayoutPhase autoLayoutPhase((pc_), (eLayoutPhase_##phase_))
michael@0: #define LAYOUT_PHASE_TEMP_EXIT() \
michael@0:   PR_BEGIN_MACRO \
michael@0:     autoLayoutPhase.Exit(); \
michael@0:   PR_END_MACRO
michael@0: #define LAYOUT_PHASE_TEMP_REENTER() \
michael@0:   PR_BEGIN_MACRO \
michael@0:     autoLayoutPhase.Enter(); \
michael@0:   PR_END_MACRO
michael@0: 
michael@0: #else // DEBUG
michael@0: 
michael@0: #define AUTO_LAYOUT_PHASE_ENTRY_POINT(pc_, phase_) \
michael@0:   PR_BEGIN_MACRO PR_END_MACRO
michael@0: #define LAYOUT_PHASE_TEMP_EXIT() \
michael@0:   PR_BEGIN_MACRO PR_END_MACRO
michael@0: #define LAYOUT_PHASE_TEMP_REENTER() \
michael@0:   PR_BEGIN_MACRO PR_END_MACRO
michael@0: 
michael@0: #endif // DEBUG
michael@0: 
michael@0: #endif // nsAutoLayoutPhase_h