gecko/gfx/2d/Logging.h

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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
2012-05-21 04:12:37 -07:00
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef MOZILLA_GFX_LOGGING_H_
#define MOZILLA_GFX_LOGGING_H_
#include <string>
#include <sstream>
#include <stdio.h>
#include "Point.h"
#include "Matrix.h"
#ifdef WIN32
#include <windows.h>
#endif
#ifdef PR_LOGGING
#include <prlog.h>
extern PRLogModuleInfo *sGFX2DLog;
#endif
namespace mozilla {
namespace gfx {
const int LOG_DEBUG = 1;
const int LOG_WARNING = 2;
#ifdef PR_LOGGING
inline PRLogModuleLevel PRLogLevelForLevel(int aLevel) {
switch (aLevel) {
case LOG_DEBUG:
return PR_LOG_DEBUG;
case LOG_WARNING:
return PR_LOG_WARNING;
}
return PR_LOG_DEBUG;
}
#endif
extern int sGfxLogLevel;
static void OutputMessage(const std::string &aString, int aLevel) {
#if defined(WIN32) && !defined(PR_LOGGING)
if (aLevel >= sGfxLogLevel) {
::OutputDebugStringA(aString.c_str());
}
#elif defined(PR_LOGGING)
if (PR_LOG_TEST(sGFX2DLog, PRLogLevelForLevel(aLevel))) {
PR_LogPrint(aString.c_str());
}
#else
if (aLevel >= sGfxLogLevel) {
printf("%s", aString.c_str());
}
#endif
}
class NoLog
{
public:
NoLog() {}
~NoLog() {}
template<typename T>
NoLog &operator <<(const T &aLogText) { return *this; }
};
template<int L>
class Log
{
public:
Log() {}
~Log() { mMessage << '\n'; WriteLog(mMessage.str()); }
Log &operator <<(const std::string &aLogText) { mMessage << aLogText; return *this; }
Log &operator <<(unsigned int aInt) { mMessage << aInt; return *this; }
Log &operator <<(const Size &aSize)
{ mMessage << "(" << aSize.width << "x" << aSize.height << ")"; return *this; }
Log &operator <<(const IntSize &aSize)
{ mMessage << "(" << aSize.width << "x" << aSize.height << ")"; return *this; }
Log &operator<<(const Matrix& aMatrix)
{ mMessage << "[ " << aMatrix._11 << " " << aMatrix._12 << " ; " << aMatrix._21 << " " << aMatrix._22 << " ; " << aMatrix._31 << " " << aMatrix._32 << " ]"; return *this; }
private:
void WriteLog(const std::string &aString) {
OutputMessage(aString, L);
}
std::stringstream mMessage;
};
typedef Log<LOG_DEBUG> DebugLog;
typedef Log<LOG_WARNING> WarningLog;
#ifdef GFX_LOG_DEBUG
#define gfxDebug DebugLog
#else
#define gfxDebug if (1) ; else NoLog
#endif
#ifdef GFX_LOG_WARNING
#define gfxWarning WarningLog
#else
#define gfxWarning if (1) ; else NoLog
#endif
}
}
#endif /* MOZILLA_GFX_LOGGING_H_ */