utils.h

来自「A*算法 A*算法 A*算法 A*算法A*算法A*算法」· C头文件 代码 · 共 650 行 · 第 1/2 页

/////////////////////////////////////////////////////////////////////////////
// Name:        utils.h
// Purpose:     Miscellaneous utilities
// Author:      Julian Smart
// Modified by:
// Created:     29/01/98
// RCS-ID:      $Id: utils.h,v 1.118.2.2 2006/01/09 12:32:18 VZ Exp $
// Copyright:   (c) 1998 Julian Smart
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#ifndef _WX_UTILSH__
#define _WX_UTILSH__

// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------

#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) && !defined(__EMX__)
// Some older compilers (such as EMX) cannot handle
// #pragma interface/implementation correctly, iff
// #pragma implementation is used in _two_ translation
// units (as created by e.g. event.cpp compiled for
// libwx_base and event.cpp compiled for libwx_gui_core).
// So we must not use those pragmas for those compilers in
// such files.
    #pragma interface "utils.h"
#endif

#include "wx/object.h"
#include "wx/list.h"
#include "wx/filefn.h"

class WXDLLIMPEXP_BASE wxArrayString;

// need this for wxGetDiskSpace() as we can't, unfortunately, forward declare
// wxLongLong
#include "wx/longlong.h"

#ifdef __X__
    #include <dirent.h>
    #include <unistd.h>
#endif

#include <stdio.h>

// ----------------------------------------------------------------------------
// Forward declaration
// ----------------------------------------------------------------------------

class WXDLLIMPEXP_CORE wxProcess;
class WXDLLIMPEXP_CORE wxFrame;
class WXDLLIMPEXP_CORE wxWindow;
class WXDLLIMPEXP_CORE wxWindowList;
class WXDLLIMPEXP_CORE wxPoint;

// ----------------------------------------------------------------------------
// Macros
// ----------------------------------------------------------------------------

#define wxMax(a,b)            (((a) > (b)) ? (a) : (b))
#define wxMin(a,b)            (((a) < (b)) ? (a) : (b))

// wxGetFreeMemory can return huge amount of memory on 64-bit platforms
// define wxMemorySize according to the type which best fits your platform
#if wxUSE_LONGLONG && defined(__WIN64__)
    // 64 bit Windowses have sizeof(long) only 32 bit long
    // we need to use wxLongLong to express memory sizes
    #define wxMemorySize wxLongLong
#else
    // 64 bit UNIX has sizeof(long) = 64
    // assume 32 bit platforms cannnot return more than 32bits of
    #define wxMemorySize long
#endif

// ----------------------------------------------------------------------------
// String functions (deprecated, use wxString)
// ----------------------------------------------------------------------------

// Make a copy of this string using 'new'
#if WXWIN_COMPATIBILITY_2_4
wxDEPRECATED( WXDLLIMPEXP_BASE wxChar* copystring(const wxChar *s) );
#endif

// A shorter way of using strcmp
#define wxStringEq(s1, s2) (s1 && s2 && (wxStrcmp(s1, s2) == 0))

// ----------------------------------------------------------------------------
// Miscellaneous functions
// ----------------------------------------------------------------------------

// Sound the bell
#if !defined __EMX__ && \
    (defined __WXMOTIF__ || defined __WXGTK__ || defined __WXX11__)
WXDLLIMPEXP_CORE void wxBell();
#else
WXDLLIMPEXP_BASE void wxBell();
#endif

// Get OS description as a user-readable string
WXDLLIMPEXP_BASE wxString wxGetOsDescription();

// Get OS version
WXDLLIMPEXP_BASE int wxGetOsVersion(int *majorVsn = (int *) NULL,
                               int *minorVsn = (int *) NULL);

// Return a string with the current date/time
WXDLLIMPEXP_BASE wxString wxNow();

// Return path where wxWidgets is installed (mostly useful in Unices)
WXDLLIMPEXP_BASE const wxChar *wxGetInstallPrefix();
// Return path to wxWin data (/usr/share/wx/%{version}) (Unices)
WXDLLIMPEXP_BASE wxString wxGetDataDir();


#if wxUSE_GUI

// Get the state of a key (true if pressed, false if not)
// This is generally most useful getting the state of
// the modifier or toggle keys.
WXDLLEXPORT bool wxGetKeyState(wxKeyCode key);


// Don't synthesize KeyUp events holding down a key and producing
// KeyDown events with autorepeat. On by default and always on
// in wxMSW.
WXDLLEXPORT bool wxSetDetectableAutoRepeat( bool flag );


#if wxABI_VERSION > 20602

// wxMouseState is used to hold information about button and modifier state
// and is what is returned from wxGetMouseState.
class WXDLLEXPORT wxMouseState
{
public:
    wxMouseState()
        : m_x(0), m_y(0),
          m_leftDown(false), m_middleDown(false), m_rightDown(false),
          m_controlDown(false), m_shiftDown(false), m_altDown(false),
          m_metaDown(false)
    {}

    wxCoord     GetX() { return m_x; }
    wxCoord     GetY() { return m_y; }

    bool        LeftDown()    { return m_leftDown; }
    bool        MiddleDown()  { return m_middleDown; }
    bool        RightDown()   { return m_rightDown; }

    bool        ControlDown() { return m_controlDown; }
    bool        ShiftDown()   { return m_shiftDown; }
    bool        AltDown()     { return m_altDown; }
    bool        MetaDown()    { return m_metaDown; }
    bool        CmdDown()
    {
#if defined(__WXMAC__) || defined(__WXCOCOA__)
        return MetaDown();
#else
        return ControlDown();
#endif
    }

    void        SetX(wxCoord x) { m_x = x; }
    void        SetY(wxCoord y) { m_y = y; }

    void        SetLeftDown(bool down)   { m_leftDown = down; }
    void        SetMiddleDown(bool down) { m_middleDown = down; }
    void        SetRightDown(bool down)  { m_rightDown = down; }

    void        SetControlDown(bool down) { m_controlDown = down; }
    void        SetShiftDown(bool down)   { m_shiftDown = down; }
    void        SetAltDown(bool down)     { m_altDown = down; }
    void        SetMetaDown(bool down)    { m_metaDown = down; }

private:
    wxCoord     m_x;
    wxCoord     m_y;

    bool        m_leftDown;
    bool        m_middleDown;
    bool        m_rightDown;

    bool        m_controlDown;
    bool        m_shiftDown;
    bool        m_altDown;
    bool        m_metaDown;
};


// Returns the current state of the mouse position, buttons and modifers
WXDLLEXPORT wxMouseState wxGetMouseState();

#endif // wxABI_VERSION > 2.6.2

// ----------------------------------------------------------------------------
// Window ID management
// ----------------------------------------------------------------------------

// Generate a unique ID
WXDLLEXPORT long wxNewId();

// Ensure subsequent IDs don't clash with this one
WXDLLEXPORT void wxRegisterId(long id);

// Return the current ID
WXDLLEXPORT long wxGetCurrentId();

#endif // wxUSE_GUI

// ----------------------------------------------------------------------------
// Various conversions
// ----------------------------------------------------------------------------

// these functions are deprecated, use wxString methods instead!
#if WXWIN_COMPATIBILITY_2_4

extern WXDLLIMPEXP_DATA_BASE(const wxChar*) wxFloatToStringStr;
extern WXDLLIMPEXP_DATA_BASE(const wxChar*) wxDoubleToStringStr;

wxDEPRECATED( WXDLLIMPEXP_BASE void StringToFloat(const wxChar *s, float *number) );
wxDEPRECATED( WXDLLIMPEXP_BASE wxChar* FloatToString(float number, const wxChar *fmt = wxFloatToStringStr) );
wxDEPRECATED( WXDLLIMPEXP_BASE void StringToDouble(const wxChar *s, double *number) );
wxDEPRECATED( WXDLLIMPEXP_BASE wxChar* DoubleToString(double number, const wxChar *fmt = wxDoubleToStringStr) );
wxDEPRECATED( WXDLLIMPEXP_BASE void StringToInt(const wxChar *s, int *number) );
wxDEPRECATED( WXDLLIMPEXP_BASE void StringToLong(const wxChar *s, long *number) );
wxDEPRECATED( WXDLLIMPEXP_BASE wxChar* IntToString(int number) );
wxDEPRECATED( WXDLLIMPEXP_BASE wxChar* LongToString(long number) );

#endif // WXWIN_COMPATIBILITY_2_4

// Convert 2-digit hex number to decimal
WXDLLIMPEXP_BASE int wxHexToDec(const wxString& buf);

// Convert decimal integer to 2-character hex string
WXDLLIMPEXP_BASE void wxDecToHex(int dec, wxChar *buf);
WXDLLIMPEXP_BASE wxString wxDecToHex(int dec);

// ----------------------------------------------------------------------------
// Process management
// ----------------------------------------------------------------------------

// NB: for backwards compatibility reasons the values of wxEXEC_[A]SYNC *must*
//     be 0 and 1, don't change!

enum
{
    // execute the process asynchronously
    wxEXEC_ASYNC    = 0,

    // execute it synchronously, i.e. wait until it finishes
    wxEXEC_SYNC     = 1,

    // under Windows, don't hide the child even if it's IO is redirected (this
    // is done by default)
    wxEXEC_NOHIDE   = 2,

    // under Unix, if the process is the group leader then passing wxKILL_CHILDREN to wxKill
    // kills all children as well as pid
    wxEXEC_MAKE_GROUP_LEADER = 4,

    // by default synchronous execution disables all program windows to avoid
    // that the user interacts with the program while the child process is
    // running, you can use this flag to prevent this from happening
    wxEXEC_NODISABLE = 8
};

// Execute another program.
//
// If flags contain wxEXEC_SYNC, return -1 on failure and the exit code of the
// process if everything was ok. Otherwise (i.e. if wxEXEC_ASYNC), return 0 on
// failure and the PID of the launched process if ok.
WXDLLIMPEXP_BASE long wxExecute(wxChar **argv, int flags = wxEXEC_ASYNC,
                           wxProcess *process = (wxProcess *) NULL);
WXDLLIMPEXP_BASE long wxExecute(const wxString& command, int flags = wxEXEC_ASYNC,
                           wxProcess *process = (wxProcess *) NULL);

// execute the command capturing its output into an array line by line, this is
// always synchronous
WXDLLIMPEXP_BASE long wxExecute(const wxString& command,
                                wxArrayString& output,
                                int flags = 0);

// also capture stderr (also synchronous)
WXDLLIMPEXP_BASE long wxExecute(const wxString& command,
                                wxArrayString& output,
                                wxArrayString& error,
                                int flags = 0);

enum wxSignal
{
    wxSIGNONE = 0,  // verify if the process exists under Unix
    wxSIGHUP,
    wxSIGINT,
    wxSIGQUIT,
    wxSIGILL,
    wxSIGTRAP,
    wxSIGABRT,
    wxSIGIOT = wxSIGABRT,   // another name
    wxSIGEMT,
    wxSIGFPE,
    wxSIGKILL,
    wxSIGBUS,
    wxSIGSEGV,
    wxSIGSYS,
    wxSIGPIPE,
    wxSIGALRM,
    wxSIGTERM

    // further signals are different in meaning between different Unix systems
};

enum wxKillError
{
    wxKILL_OK,              // no error
    wxKILL_BAD_SIGNAL,      // no such signal
    wxKILL_ACCESS_DENIED,   // permission denied
    wxKILL_NO_PROCESS,      // no such process
    wxKILL_ERROR            // another, unspecified error
};

enum wxKillFlags
{
    wxKILL_NOCHILDREN = 0,  // don't kill children
    wxKILL_CHILDREN = 1     // kill children