1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/layout/base/nsAutoLayoutPhase.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,49 @@
1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.6 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.7 +
1.8 +#ifndef nsAutoLayoutPhase_h
1.9 +#define nsAutoLayoutPhase_h
1.10 +
1.11 +#ifdef DEBUG
1.12 +
1.13 +// We can't forward declare an enum before C++11 which means we have to include
1.14 +// nsPresContext.h just because nsLayoutPhase is passed to the ctor.
1.15 +#include "nsPresContext.h"
1.16 +
1.17 +struct nsAutoLayoutPhase {
1.18 + nsAutoLayoutPhase(nsPresContext* aPresContext, nsLayoutPhase aPhase);
1.19 + ~nsAutoLayoutPhase();
1.20 +
1.21 + void Enter();
1.22 + void Exit();
1.23 +
1.24 +private:
1.25 + nsPresContext* mPresContext;
1.26 + nsLayoutPhase mPhase;
1.27 + uint32_t mCount;
1.28 +};
1.29 +
1.30 +#define AUTO_LAYOUT_PHASE_ENTRY_POINT(pc_, phase_) \
1.31 + nsAutoLayoutPhase autoLayoutPhase((pc_), (eLayoutPhase_##phase_))
1.32 +#define LAYOUT_PHASE_TEMP_EXIT() \
1.33 + PR_BEGIN_MACRO \
1.34 + autoLayoutPhase.Exit(); \
1.35 + PR_END_MACRO
1.36 +#define LAYOUT_PHASE_TEMP_REENTER() \
1.37 + PR_BEGIN_MACRO \
1.38 + autoLayoutPhase.Enter(); \
1.39 + PR_END_MACRO
1.40 +
1.41 +#else // DEBUG
1.42 +
1.43 +#define AUTO_LAYOUT_PHASE_ENTRY_POINT(pc_, phase_) \
1.44 + PR_BEGIN_MACRO PR_END_MACRO
1.45 +#define LAYOUT_PHASE_TEMP_EXIT() \
1.46 + PR_BEGIN_MACRO PR_END_MACRO
1.47 +#define LAYOUT_PHASE_TEMP_REENTER() \
1.48 + PR_BEGIN_MACRO PR_END_MACRO
1.49 +
1.50 +#endif // DEBUG
1.51 +
1.52 +#endif // nsAutoLayoutPhase_h
