qglobal.cpp

Trolltech公司发布的图形界面操作系统。可在qt-embedded-2.3.10平台上编译为嵌入式图形界面操作系统。

/**********************************************************************
** Copyright (C) 2000-2005 Trolltech AS.  All rights reserved.
**
** This file is part of the Qtopia Environment.
** 
** This program is free software; you can redistribute it and/or modify it
** under the terms of the GNU General Public License as published by the
** Free Software Foundation; either version 2 of the License, or (at your
** option) any later version.
** 
** A copy of the GNU GPL license version 2 is included in this package as 
** LICENSE.GPL.
**
** This program is distributed in the hope that it will be useful, but
** WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
** See the GNU General Public License for more details.
**
** In addition, as a special exception Trolltech gives permission to link
** the code of this program with Qtopia applications copyrighted, developed
** and distributed by Trolltech under the terms of the Qtopia Personal Use
** License Agreement. You must comply with the GNU General Public License
** in all respects for all of the code used other than the applications
** licensed under the Qtopia Personal Use License Agreement. If you modify
** this file, you may extend this exception to your version of the file,
** but you are not obligated to do so. If you do not wish to do so, delete
** this exception statement from your version.
** 
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact [e-mail] if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/

#include "qplatformdefs.h"

#include "qasciidict.h"
#include <limits.h>
#include <stdio.h>
#include <limits.h>
#include <stdarg.h>
#include <stdlib.h>

#if defined(Q_CC_MSVC) && !defined(Q_OS_TEMP)
#include <crtdbg.h>
#endif


/*!
    \relates QApplication

    Returns the Qt version number as a string, for example, "2.3.0" or
    "3.0.5".

    The \c QT_VERSION define has the numeric value in the form:
    0xmmiibb (m = major, i = minor, b = bugfix). For example, Qt
    3.0.5's \c QT_VERSION is 0x030005.
*/

const char *qVersion()
{
    return QT_VERSION_STR;
}

bool qSharedBuild()
{
#ifdef QT_SHARED
    return TRUE;
#else
    return FALSE;
#endif
}

/*****************************************************************************
  System detection routines
 *****************************************************************************/

static bool si_alreadyDone = FALSE;
static int  si_wordSize;
static bool si_bigEndian;

/*!
    \relates QApplication

    Obtains information about the system.

    The system's word size in bits (typically 32) is returned in \a
    *wordSize. The \a *bigEndian is set to TRUE if this is a big-endian
    machine, or to FALSE if this is a little-endian machine.

    In debug mode, this function calls qFatal() with a message if the
    computer is truly weird (i.e. different endianness for 16 bit and
    32 bit integers); in release mode it returns FALSE.
*/

bool qSysInfo( int *wordSize, bool *bigEndian )
{
#if defined(QT_CHECK_NULL)
    Q_ASSERT( wordSize != 0 );
    Q_ASSERT( bigEndian != 0 );
#endif

    if ( si_alreadyDone ) {			// run it only once
	*wordSize  = si_wordSize;
	*bigEndian = si_bigEndian;
	return TRUE;
    }

    si_wordSize = 0;
    Q_ULONG n = (Q_ULONG)(~0);
    while ( n ) {				// detect word size
	si_wordSize++;
	n /= 2;
    }
    *wordSize = si_wordSize;

    if ( *wordSize != 64 &&
	 *wordSize != 32 &&
	 *wordSize != 16 ) {			// word size: 16, 32 or 64
#if defined(QT_CHECK_RANGE)
	qFatal( "qSysInfo: Unsupported system word size %d", *wordSize );
#endif
	return FALSE;
    }
    if ( sizeof(Q_INT8) != 1 || sizeof(Q_INT16) != 2 || sizeof(Q_INT32) != 4 ||
	 sizeof(Q_ULONG)*8 != si_wordSize || sizeof(float) != 4 || sizeof(double) != 8 ) {
#if defined(QT_CHECK_RANGE)
	qFatal( "qSysInfo: Unsupported system data type size" );
#endif
	return FALSE;
    }

    bool  be16, be32;				// determine byte ordering
    short ns = 0x1234;
    int	  nl = 0x12345678;

    unsigned char *p = (unsigned char *)(&ns);	// 16-bit integer
    be16 = *p == 0x12;

    p = (unsigned char *)(&nl);			// 32-bit integer
    if ( p[0] == 0x12 && p[1] == 0x34 && p[2] == 0x56 && p[3] == 0x78 )
	be32 = TRUE;
    else
    if ( p[0] == 0x78 && p[1] == 0x56 && p[2] == 0x34 && p[3] == 0x12 )
	be32 = FALSE;
    else
	be32 = !be16;

    if ( be16 != be32 ) {			// strange machine!
#if defined(QT_CHECK_RANGE)
	qFatal( "qSysInfo: Inconsistent system byte order" );
#endif
	return FALSE;
    }

    *bigEndian = si_bigEndian = be32;
    si_alreadyDone = TRUE;
    return TRUE;
}

#if !defined(QWS) && defined(Q_OS_MAC)

#include "qt_mac.h"

int qMacVersion()
{
    static int macver = Qt::MV_Unknown;
    static bool first = TRUE;
    if(first) {
	first = FALSE;
	long gestalt_version;
	if(Gestalt(gestaltSystemVersion, &gestalt_version) == noErr) {
	    if(gestalt_version >= 0x1030 && gestalt_version < 0x1040)
		macver = Qt::MV_10_DOT_3;
	    else if(gestalt_version >= 0x1020 && gestalt_version < 0x1030)
		macver = Qt::MV_10_DOT_2;
	    else if(gestalt_version >= 0x1010 && gestalt_version < 0x1020)
		macver = Qt::MV_10_DOT_1;
	    else if(gestalt_version >= 0x1000 && gestalt_version < 0x1010)
		macver = Qt::MV_10_DOT_0;

	}
    }
    return macver;
}
Qt::MacintoshVersion qt_macver = (Qt::MacintoshVersion)qMacVersion();

#elif defined(Q_OS_WIN32) || defined(Q_OS_CYGWIN)
bool qt_winunicode;

#include "qt_windows.h"

int qWinVersion()
{
#ifndef VER_PLATFORM_WIN32s
#define VER_PLATFORM_WIN32s	    0
#endif
#ifndef VER_PLATFORM_WIN32_WINDOWS
#define VER_PLATFORM_WIN32_WINDOWS  1
#endif
#ifndef VER_PLATFORM_WIN32_NT
#define VER_PLATFORM_WIN32_NT	    2
#endif

    static int winver = Qt::WV_NT;
    static int t=0;
    if ( !t ) {
	t=1;
#ifdef Q_OS_TEMP
	OSVERSIONINFOW osver;
	osver.dwOSVersionInfoSize = sizeof(osver);
	GetVersionEx( &osver );
#else
	OSVERSIONINFOA osver;
	osver.dwOSVersionInfoSize = sizeof(osver);
	GetVersionExA( &osver );
#endif
	switch ( osver.dwPlatformId ) {
	case VER_PLATFORM_WIN32s:
	    winver = Qt::WV_32s;
	    break;
	case VER_PLATFORM_WIN32_WINDOWS:
	    // We treat Windows Me (minor 90) the same as Windows 98
	    if ( ( osver.dwMinorVersion == 10 ) || ( osver.dwMinorVersion == 90 ) )
		winver = Qt::WV_98;
	    else
		winver = Qt::WV_95;
	    break;
	default: // VER_PLATFORM_WIN32_NT
	    if ( osver.dwMajorVersion < 5 ) {
		winver = Qt::WV_NT;
	    } else if ( osver.dwMinorVersion == 0 ) {
		winver = Qt::WV_2000;
	    } else {
		winver = Qt::WV_XP;
	    }
	}
    }

#if defined(UNICODE)
    if ( winver & Qt::WV_NT_based )
	qt_winunicode = TRUE;
    else
#endif
	qt_winunicode = FALSE;

    return winver;
}

Qt::WindowsVersion qt_winver = (Qt::WindowsVersion)qWinVersion();
#endif


/*****************************************************************************
  Debug output routines
 *****************************************************************************/

/*!
    \fn void qDebug( const char *msg, ... )

    \relates QApplication

    Prints a debug message \a msg, or calls the message handler (if it
    has been installed).

    This function takes a format string and a list of arguments,
    similar to the C printf() function.

    Example:
    \code
	qDebug( "my window handle = %x", myWidget->id() );
    \endcode

    Under X11, the text is printed to stderr. Under Windows, the text
    is sent to the debugger.

    \warning The internal buffer is limited to 8196 bytes (including
    the '\0'-terminator).

    \warning Passing (const char *)0 as argument to qDebug might lead
    to crashes on certain platforms due to the platforms printf implementation.

    \sa qWarning(), qFatal(), qInstallMsgHandler(),
	\link debug.html Debugging\endlink
*/

/*!
    \fn void qWarning( const char *msg, ... )

    \relates QApplication

    Prints a warning message \a msg, or calls the message handler (if
    it has been installed).

    This function takes a format string and a list of arguments,
    similar to the C printf() function.

    Example:
    \code
	void f( int c )
	{
	    if ( c > 200 )
		qWarning( "f: bad argument, c == %d", c );
	}
    \endcode

    Under X11, the text is printed to stderr. Under Windows, the text
    is sent to the debugger.

    \warning The internal buffer is limited to 8196 bytes (including
    the '\0'-terminator).

    \warning Passing (const char *)0 as argument to qWarning might lead
    to crashes on certain platforms due to the platforms printf implementation.

    \sa qDebug(), qFatal(), qInstallMsgHandler(),
    \link debug.html Debugging\endlink
*/

/*!
    \fn void qFatal( const char *msg, ... )

    \relates QApplication

    Prints a fatal error message \a msg and exits, or calls the
    message handler (if it has been installed).

    This function takes a format string and a list of arguments,
    similar to the C printf() function.

    Example:
    \code
	int divide( int a, int b )
	{
	    if ( b == 0 )				// program error
		qFatal( "divide: cannot divide by zero" );
	    return a/b;
	}
    \endcode

    Under X11, the text is printed to stderr. Under Windows, the text
    is sent to the debugger.

    \warning The internal buffer is limited to 8196 bytes (including
    the '\0'-terminator).

    \warning Passing (const char *)0 as argument to qFatal might lead
    to crashes on certain platforms due to the platforms printf implementation.

    \sa qDebug(), qWarning(), qInstallMsgHandler(),
    \link debug.html Debugging\endlink
*/


static QtMsgHandler handler = 0;		// pointer to debug handler
static const int QT_BUFFER_LENGTH = 8196;	// internal buffer length


#ifdef Q_OS_MAC
QString cfstring2qstring(CFStringRef str)
{
    if(!str)
	return QString();

    CFIndex length = CFStringGetLength(str);
    if(const UniChar *chars = CFStringGetCharactersPtr(str))
	return QString((QChar *)chars, length);
    UniChar *buffer = (UniChar*)malloc(length * sizeof(UniChar));
    CFStringGetCharacters(str, CFRangeMake(0, length), buffer);
    QString ret((QChar *)buffer, length);
    free(buffer);
    return ret;
}

#if 0
unsigned char * p_str(const char * c, int len=-1)
{
    const int maxlen = 255;
    if(len == -1)
	len = qstrlen(c);
    if(len > maxlen) {
	qWarning( "p_str len must never exceed %d", maxlen );
	len = maxlen;
    }
    unsigned char *ret = (unsigned char*)malloc(len+2);
    *ret=len;
    memcpy(((char *)ret)+1,c,len);
    *(ret+len+1) = '\0';
    return ret;
}

unsigned char * p_str(const QString &s)
{
    return p_str(s, s.length());
}

QCString p2qstring(const unsigned char *c) {
       char *arr = (char *)malloc(c[0] + 1);
       memcpy(arr, c+1, c[0]);
       arr[c[0]] = '\0';
       QCString ret = arr;
       delete arr;
       return ret;
}
#endif
#endif


#ifdef Q_CC_MWERKS

#include "qt_mac.h"

extern bool qt_is_gui_used;
static void mac_default_handler( const char *msg )
{
    if ( qt_is_gui_used ) {
	const char *p = p_str(msg);
	DebugStr(p);
	free(p);
    } else {
	fprintf( stderr, msg );
    }
}

#endif


void qDebug( const char *msg, ... )
{
    char buf[QT_BUFFER_LENGTH];
    va_list ap;
    va_start( ap, msg );			// use variable arg list
    if ( handler ) {
#if defined(QT_VSNPRINTF)
	QT_VSNPRINTF( buf, QT_BUFFER_LENGTH, msg, ap );
#else
	vsprintf( buf, msg, ap );
#endif
	va_end( ap );
	(*handler)( QtDebugMsg, buf );
    } else {
#if defined(Q_CC_MWERKS)
	vsprintf( buf, msg, ap );		// ### is there no vsnprintf()?
	va_end( ap );
        mac_default_handler(buf);
#else
	vfprintf( stderr, msg, ap );
	va_end( ap );
	fprintf( stderr, "\n" );		// add newline
#endif