mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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259 lines
7.0 KiB
C++
259 lines
7.0 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* 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 MOZILLA_GFX_LOGGING_H_
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#define MOZILLA_GFX_LOGGING_H_
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#include <string>
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#include <sstream>
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#include <stdio.h>
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#include "nsDebug.h"
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#include "Point.h"
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#include "BaseRect.h"
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#include "Matrix.h"
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#include "mozilla/TypedEnum.h"
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#ifdef WIN32
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// This file gets included from nsGlobalWindow.cpp, which doesn't like
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// having windows.h included in it. Since OutputDebugStringA is the only
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// thing we need from windows.h, we just declare it here directly.
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// Note: the function's documented signature is
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// WINBASEAPI void WINAPI OutputDebugStringA(LPCSTR lpOutputString)
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// but if we don't include windows.h, the macros WINBASEAPI, WINAPI, and
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// LPCSTR are not defined, so we need to replace them with their expansions.
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extern "C" __declspec(dllimport) void __stdcall OutputDebugStringA(const char* lpOutputString);
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#endif
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#if defined(DEBUG) || defined(PR_LOGGING)
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#include <prlog.h>
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extern GFX2D_API PRLogModuleInfo *GetGFX2DLog();
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#endif
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namespace mozilla {
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namespace gfx {
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const int LOG_DEBUG = 1;
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const int LOG_WARNING = 2;
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#if defined(DEBUG) || defined(PR_LOGGING)
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inline PRLogModuleLevel PRLogLevelForLevel(int aLevel) {
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switch (aLevel) {
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case LOG_DEBUG:
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return PR_LOG_DEBUG;
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case LOG_WARNING:
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return PR_LOG_WARNING;
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}
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return PR_LOG_DEBUG;
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}
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#endif
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extern GFX2D_API int sGfxLogLevel;
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static inline void OutputMessage(const std::string &aString, int aLevel) {
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#if defined(WIN32) && !defined(PR_LOGGING)
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if (aLevel >= sGfxLogLevel) {
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::OutputDebugStringA(aString.c_str());
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}
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#elif defined(PR_LOGGING) && !(defined(MOZ_WIDGET_GONK) || defined(MOZ_WIDGET_ANDROID))
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if (PR_LOG_TEST(GetGFX2DLog(), PRLogLevelForLevel(aLevel))) {
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PR_LogPrint(aString.c_str());
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}
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#else
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if (aLevel >= sGfxLogLevel) {
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printf_stderr("%s", aString.c_str());
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}
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#endif
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}
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class NoLog
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{
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public:
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NoLog() {}
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~NoLog() {}
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template<typename T>
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NoLog &operator <<(const T &aLogText) { return *this; }
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};
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MOZ_BEGIN_ENUM_CLASS(LogOptions, int)
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NoNewline = 0x01
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MOZ_END_ENUM_CLASS(LogOptions)
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template<int L>
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class Log
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{
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public:
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explicit Log(LogOptions aOptions = LogOptions(0)) : mOptions(aOptions) {}
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~Log() {
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Flush();
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}
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void Flush() {
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if (!(int(mOptions) & int(LogOptions::NoNewline))) {
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mMessage << '\n';
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}
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std::string str = mMessage.str();
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if (!str.empty()) {
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WriteLog(str);
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}
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mMessage.str("");
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mMessage.clear();
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}
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Log &operator <<(char aChar) { mMessage << aChar; return *this; }
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Log &operator <<(const std::string &aLogText) { mMessage << aLogText; return *this; }
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Log &operator <<(const char aStr[]) { mMessage << static_cast<const char*>(aStr); return *this; }
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Log &operator <<(bool aBool) { mMessage << (aBool ? "true" : "false"); return *this; }
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Log &operator <<(int aInt) { mMessage << aInt; return *this; }
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Log &operator <<(unsigned int aInt) { mMessage << aInt; return *this; }
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Log &operator <<(long aLong) { mMessage << aLong; return *this; }
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Log &operator <<(unsigned long aLong) { mMessage << aLong; return *this; }
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Log &operator <<(long long aLong) { mMessage << aLong; return *this; }
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Log &operator <<(unsigned long long aLong) { mMessage << aLong; return *this; }
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Log &operator <<(Float aFloat) { mMessage << aFloat; return *this; }
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Log &operator <<(double aDouble) { mMessage << aDouble; return *this; }
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template <typename T, typename Sub>
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Log &operator <<(const BasePoint<T, Sub>& aPoint)
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{ mMessage << "Point" << aPoint; return *this; }
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template <typename T, typename Sub>
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Log &operator <<(const BaseSize<T, Sub>& aSize)
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{ mMessage << "Size(" << aSize.width << "," << aSize.height << ")"; return *this; }
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template <typename T, typename Sub, typename Point, typename SizeT, typename Margin>
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Log &operator <<(const BaseRect<T, Sub, Point, SizeT, Margin>& aRect)
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{ mMessage << "Rect" << aRect; return *this; }
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Log &operator<<(const Matrix& aMatrix)
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{ mMessage << "Matrix(" << aMatrix._11 << " " << aMatrix._12 << " ; " << aMatrix._21 << " " << aMatrix._22 << " ; " << aMatrix._31 << " " << aMatrix._32 << ")"; return *this; }
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private:
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void WriteLog(const std::string &aString) {
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OutputMessage(aString, L);
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}
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std::stringstream mMessage;
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LogOptions mOptions;
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};
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typedef Log<LOG_DEBUG> DebugLog;
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typedef Log<LOG_WARNING> WarningLog;
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#ifdef GFX_LOG_DEBUG
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#define gfxDebug DebugLog
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#else
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#define gfxDebug if (1) ; else NoLog
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#endif
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#ifdef GFX_LOG_WARNING
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#define gfxWarning WarningLog
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#else
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#define gfxWarning if (1) ; else NoLog
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#endif
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// See nsDebug.h and the NS_WARN_IF macro
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#ifdef __cplusplus
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#ifdef DEBUG
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inline bool MOZ2D_warn_if_impl(bool aCondition, const char* aExpr,
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const char* aFile, int32_t aLine)
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{
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if (MOZ_UNLIKELY(aCondition)) {
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gfxWarning() << aExpr << " at " << aFile << ":" << aLine;
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}
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return aCondition;
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}
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#define MOZ2D_WARN_IF(condition) \
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MOZ2D_warn_if_impl(condition, #condition, __FILE__, __LINE__)
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#else
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#define MOZ2D_WARN_IF(condition) (bool)(condition)
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#endif
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#endif
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const int INDENT_PER_LEVEL = 2;
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class TreeLog
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{
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public:
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explicit TreeLog(const std::string& aPrefix = "")
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: mLog(LogOptions::NoNewline),
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mPrefix(aPrefix),
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mDepth(0),
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mStartOfLine(true),
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mConditionedOnPref(false),
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mPrefFunction(nullptr) {}
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template <typename T>
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TreeLog& operator<<(const T& aObject) {
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if (mConditionedOnPref && !mPrefFunction()) {
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return *this;
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}
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if (mStartOfLine) {
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mLog << '[' << mPrefix << "] " << std::string(mDepth * INDENT_PER_LEVEL, ' ');
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mStartOfLine = false;
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}
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mLog << aObject;
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if (EndsInNewline(aObject)) {
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// Don't indent right here as the user may change the indent
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// between now and the first output to the next line.
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mLog.Flush();
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mStartOfLine = true;
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}
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return *this;
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}
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void IncreaseIndent() { ++mDepth; }
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void DecreaseIndent() { --mDepth; }
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void ConditionOnPrefFunction(bool(*aPrefFunction)()) {
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mConditionedOnPref = true;
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mPrefFunction = aPrefFunction;
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}
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private:
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Log<LOG_DEBUG> mLog;
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std::string mPrefix;
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uint32_t mDepth;
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bool mStartOfLine;
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bool mConditionedOnPref;
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bool (*mPrefFunction)();
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template <typename T>
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static bool EndsInNewline(const T& aObject) {
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return false;
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}
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static bool EndsInNewline(const std::string& aString) {
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return !aString.empty() && aString[aString.length() - 1] == '\n';
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}
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static bool EndsInNewline(char aChar) {
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return aChar == '\n';
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}
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static bool EndsInNewline(const char* aString) {
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return EndsInNewline(std::string(aString));
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}
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};
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class TreeAutoIndent
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{
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public:
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explicit TreeAutoIndent(TreeLog& aTreeLog) : mTreeLog(aTreeLog) {
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mTreeLog.IncreaseIndent();
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}
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~TreeAutoIndent() {
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mTreeLog.DecreaseIndent();
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}
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private:
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TreeLog& mTreeLog;
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};
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}
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}
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#endif /* MOZILLA_GFX_LOGGING_H_ */
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