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