The Tor Browser: comparison gfx/2d/Logging.h

--1:000000000000
+:93e9823f5b41
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+* 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 "nsDebug.h"
+#include "Point.h"
+#include "BaseRect.h"
+#include "Matrix.h"
+#include "mozilla/TypedEnum.h"
+#ifdef WIN32
+// This file gets included from nsGlobalWindow.cpp, which doesn't like
+// having windows.h included in it. Since OutputDebugStringA is the only
+// thing we need from windows.h, we just declare it here directly.
+// Note: the function's documented signature is
+//  WINBASEAPI void WINAPI OutputDebugStringA(LPCSTR lpOutputString)
+// but if we don't include windows.h, the macros WINBASEAPI, WINAPI, and
+// LPCSTR are not defined, so we need to replace them with their expansions.
+extern "C" __declspec(dllimport) void __stdcall OutputDebugStringA(const char* lpOutputString);
+#endif
+#if defined(DEBUG) || defined(PR_LOGGING)
+#include <prlog.h>
+extern GFX2D_API PRLogModuleInfo *GetGFX2DLog();
+#endif
+namespace mozilla {
+namespace gfx {
+const int LOG_DEBUG = 1;
+const int LOG_WARNING = 2;
+#if defined(DEBUG) || defined(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 GFX2D_API int sGfxLogLevel;
+static inline 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) && !(defined(MOZ_WIDGET_GONK) || defined(MOZ_WIDGET_ANDROID))
+if (PR_LOG_TEST(GetGFX2DLog(), PRLogLevelForLevel(aLevel))) {
+PR_LogPrint(aString.c_str());
+}
+#else
+if (aLevel >= sGfxLogLevel) {
+printf_stderr("%s", aString.c_str());
+}
+#endif
+}
+class NoLog
+{
+public:
+NoLog() {}
+~NoLog() {}
+template<typename T>
+NoLog &operator <<(const T &aLogText) { return *this; }
+};
+MOZ_BEGIN_ENUM_CLASS(LogOptions, int)
+NoNewline = 0x01
+MOZ_END_ENUM_CLASS(LogOptions)
+template<int L>
+class Log
+{
+public:
+Log(LogOptions aOptions = LogOptions(0)) : mOptions(aOptions) {}
+~Log() {
+Flush();
+}
+void Flush() {
+if (!(int(mOptions) & int(LogOptions::NoNewline))) {
+mMessage << '\n';
+}
+std::string str = mMessage.str();
+if (!str.empty()) {
+WriteLog(str);
+}
+mMessage.str("");
+mMessage.clear();
+}
+Log &operator <<(char aChar) { mMessage << aChar; return *this; }
+Log &operator <<(const std::string &aLogText) { mMessage << aLogText; return *this; }
+Log &operator <<(const char aStr[]) { mMessage << static_cast<const char*>(aStr); return *this; }
+Log &operator <<(bool aBool) { mMessage << (aBool ? "true" : "false"); return *this; }
+Log &operator <<(int aInt) { mMessage << aInt; return *this; }
+Log &operator <<(unsigned int aInt) { mMessage << aInt; return *this; }
+Log &operator <<(long aLong) { mMessage << aLong; return *this; }
+Log &operator <<(unsigned long aLong) { mMessage << aLong; return *this; }
+Log &operator <<(long long aLong) { mMessage << aLong; return *this; }
+Log &operator <<(unsigned long long aLong) { mMessage << aLong; return *this; }
+Log &operator <<(Float aFloat) { mMessage << aFloat; return *this; }
+Log &operator <<(double aDouble) { mMessage << aDouble; return *this; }
+template <typename T, typename Sub>
+Log &operator <<(const BasePoint<T, Sub>& aPoint)
+{ mMessage << "Point(" << aPoint.x << "," << aPoint.y << ")"; return *this; }
+template <typename T, typename Sub>
+Log &operator <<(const BaseSize<T, Sub>& aSize)
+{ mMessage << "Size(" << aSize.width << "," << aSize.height << ")"; return *this; }
+template <typename T, typename Sub, typename Point, typename SizeT, typename Margin>
+Log &operator <<(const BaseRect<T, Sub, Point, SizeT, Margin>& aRect)
+{ mMessage << "Rect(" << aRect.x << "," << aRect.y << "," << aRect.width << "," << aRect.height << ")"; return *this; }
+Log &operator<<(const Matrix& aMatrix)
+{ mMessage << "Matrix(" << 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;
+LogOptions mOptions;
+};
+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
+const int INDENT_PER_LEVEL = 2;
+class TreeLog
+{
+public:
+TreeLog(const std::string& aPrefix = "")
+: mLog(LogOptions::NoNewline),
+mPrefix(aPrefix),
+mDepth(0),
+mStartOfLine(true),
+mConditionedOnPref(false),
+mPref(nullptr) {}
+template <typename T>
+TreeLog& operator<<(const T& aObject) {
+if (mConditionedOnPref && !*mPref) {
+return *this;
+}
+if (mStartOfLine) {
+mLog << '[' << mPrefix << "] " << std::string(mDepth * INDENT_PER_LEVEL, ' ');
+mStartOfLine = false;
+}
+mLog << aObject;
+if (EndsInNewline(aObject)) {
+// Don't indent right here as the user may change the indent
+// between now and the first output to the next line.
+mLog.Flush();
+mStartOfLine = true;
+}
+return *this;
+}
+void IncreaseIndent() { ++mDepth; }
+void DecreaseIndent() { --mDepth; }
+void ConditionOnPref(bool* aPref) {
+mConditionedOnPref = true;
+mPref = aPref;
+}
+private:
+Log<LOG_DEBUG> mLog;
+std::string mPrefix;
+uint32_t mDepth;
+bool mStartOfLine;
+bool mConditionedOnPref;
+bool* mPref;
+template <typename T>
+static bool EndsInNewline(const T& aObject) {
+return false;
+}
+static bool EndsInNewline(const std::string& aString) {
+return !aString.empty() && aString[aString.length() - 1] == '\n';
+}
+static bool EndsInNewline(char aChar) {
+return aChar == '\n';
+}
+static bool EndsInNewline(const char* aString) {
+return EndsInNewline(std::string(aString));
+}
+};
+class TreeAutoIndent
+{
+public:
+TreeAutoIndent(TreeLog& aTreeLog) : mTreeLog(aTreeLog) {
+mTreeLog.IncreaseIndent();
+}
+~TreeAutoIndent() {
+mTreeLog.DecreaseIndent();
+}
+private:
+TreeLog& mTreeLog;
+};
+}
+}
+#endif /* MOZILLA_GFX_LOGGING_H_ */

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comparison: gfx/2d/Logging.h

gfx/2d/Logging.h