gecko/layout/base/PaintTracker.h

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#ifndef mozilla_PaintTracker_h
#define mozilla_PaintTracker_h
#include "nscore.h"
#include "nsDebug.h"
namespace mozilla {
class NS_STACK_CLASS PaintTracker
{
public:
PaintTracker() {
++gPaintTracker;
}
~PaintTracker() {
NS_ASSERTION(gPaintTracker > 0, "Mismatched constructor/destructor");
--gPaintTracker;
}
static bool IsPainting() {
return !!gPaintTracker;
}
private:
static int gPaintTracker;
};
} // namespace mozilla
#endif // mozilla_PaintTracker_h