utils.cpp

很牛的GUI源码wxWidgets-2.8.0.zip 可在多种平台下运行.

/////////////////////////////////////////////////////////////////////////////
// Name:        src/mac/classic/utils.cpp
// Purpose:     Various utilities
// Author:      Stefan Csomor
// Modified by:
// Created:     1998-01-01
// RCS-ID:      $Id: utils.cpp,v 1.17 2006/08/13 22:43:30 VZ Exp $
// Copyright:   (c) Stefan Csomor
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#include "wx/wxprec.h"

#include "wx/utils.h"

#ifndef WX_PRECOMP
    #include "wx/intl.h"
    #include "wx/app.h"
    #if wxUSE_GUI
        #include "wx/font.h"
    #endif
#endif

#include "wx/apptrait.h"

#if wxUSE_GUI
    #include "wx/mac/uma.h"
#endif

#include <ctype.h>

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>

#ifdef __DARWIN__
#  include "MoreFilesX.h"
#else
#  include "MoreFiles.h"
#  include "MoreFilesExtras.h"
#endif

#ifndef __DARWIN__
#include <Threads.h>
#include <Sound.h>
#endif

#include <ATSUnicode.h>
#include <TextCommon.h>
#include <TextEncodingConverter.h>

#include  "wx/mac/private.h"  // includes mac headers

#if defined(__MWERKS__) && wxUSE_UNICODE
    #include <wtime.h>
#endif

#if wxUSE_BASE

// our OS version is the same in non GUI and GUI cases
wxOperatingSystemId wxGetOsVersion(int *majorVsn, int *minorVsn)
{
    long theSystem;
    Gestalt(gestaltSystemVersion, &theSystem);

    if ( majorVsn != NULL )
        *majorVsn = (theSystem >> 8);

    if ( minorVsn != NULL )
        *minorVsn = (theSystem & 0xFF);


#if defined( __DARWIN__ )
    return wxOS_MAC_OSX_DARWIN;
#else
    return wxOS_MAC_OS;
#endif
}

#ifndef __DARWIN__
// defined in unix/utilsunx.cpp for Mac OS X

// get full hostname (with domain name if possible)
bool wxGetFullHostName(wxChar *buf, int maxSize)
{
    return wxGetHostName(buf, maxSize);
}

// Get hostname only (without domain name)
bool wxGetHostName(wxChar *buf, int maxSize)
{
    // Gets Chooser name of user by examining a System resource.

    const short kComputerNameID = -16413;

    short oldResFile = CurResFile() ;
    UseResFile(0);
    StringHandle chooserName = (StringHandle)::GetString(kComputerNameID);
    UseResFile(oldResFile);

    if (chooserName && *chooserName)
    {
        HLock( (Handle) chooserName ) ;
        wxString name = wxMacMakeStringFromPascal( *chooserName ) ;
        HUnlock( (Handle) chooserName ) ;
        ReleaseResource( (Handle) chooserName ) ;
        wxStrncpy( buf , name , maxSize - 1 ) ;
    }
    else
        buf[0] = 0 ;

    return true;
}

// Get user ID e.g. jacs
bool wxGetUserId(wxChar *buf, int maxSize)
{
  return wxGetUserName( buf , maxSize ) ;
}

const wxChar* wxGetHomeDir(wxString *pstr)
{
    *pstr = wxMacFindFolder(  (short) kOnSystemDisk, kPreferencesFolderType, kDontCreateFolder ) ;
    return pstr->c_str() ;
}

// Get user name e.g. Stefan Csomor
bool wxGetUserName(wxChar *buf, int maxSize)
{
    // Gets Chooser name of user by examining a System resource.

    const short kChooserNameID = -16096;

    short oldResFile = CurResFile() ;
    UseResFile(0);
    StringHandle chooserName = (StringHandle)::GetString(kChooserNameID);
    UseResFile(oldResFile);

    if (chooserName && *chooserName)
    {
        HLock( (Handle) chooserName ) ;
        wxString name = wxMacMakeStringFromPascal( *chooserName ) ;
        HUnlock( (Handle) chooserName ) ;
        ReleaseResource( (Handle) chooserName ) ;
        wxStrncpy( buf , name , maxSize - 1 ) ;
    }
    else
        buf[0] = 0 ;

    return true;
}

int wxKill(long pid, wxSignal sig , wxKillError *rc, int flags)
{
    // TODO
    return 0;
}

WXDLLEXPORT bool wxGetEnv(const wxString& var, wxString *value)
{
    // TODO : under classic there is no environement support, under X yes
    return false ;
}

// set the env var name to the given value, return true on success
WXDLLEXPORT bool wxSetEnv(const wxString& var, const wxChar *value)
{
    // TODO : under classic there is no environement support, under X yes
    return false ;
}

//
// Execute a program in an Interactive Shell
//
bool wxShell(const wxString& command)
{
    // TODO
    return false;
}

// Shutdown or reboot the PC
bool wxShutdown(wxShutdownFlags wFlags)
{
    // TODO
    return false;
}

// Get free memory in bytes, or -1 if cannot determine amount (e.g. on UNIX)
wxMemorySize wxGetFreeMemory()
{
    return (wxMemorySize)FreeMem() ;
}

void wxUsleep(unsigned long milliseconds)
{
    clock_t start = clock() ;
    do
    {
        YieldToAnyThread() ;
    } while( clock() - start < milliseconds /  1000.0 * CLOCKS_PER_SEC ) ;
}

void wxSleep(int nSecs)
{
    wxUsleep(1000*nSecs);
}

// Consume all events until no more left
void wxFlushEvents()
{
}

#endif // !__DARWIN__

// Emit a beeeeeep
void wxBell()
{
    SysBeep(30);
}

#endif // wxUSE_BASE

#if wxUSE_GUI

wxPortId wxGUIAppTraits::GetToolkitVersion(int *verMaj, int *verMin) const
{
    // We suppose that toolkit version is the same as OS version under Mac
    wxGetOsVersion(verMaj, verMin);

    return wxPORT_MAC;
}

// Reading and writing resources (eg WIN.INI, .Xdefaults)
#if wxUSE_RESOURCES
bool wxWriteResource(const wxString& section, const wxString& entry, const wxString& value, const wxString& file)
{
    // TODO
    return false;
}

bool wxWriteResource(const wxString& section, const wxString& entry, float value, const wxString& file)
{
    wxString buf;
    buf.Printf(wxT("%.4f"), value);

    return wxWriteResource(section, entry, buf, file);
}

bool wxWriteResource(const wxString& section, const wxString& entry, long value, const wxString& file)
{
    wxString buf;
    buf.Printf(wxT("%ld"), value);

    return wxWriteResource(section, entry, buf, file);
}

bool wxWriteResource(const wxString& section, const wxString& entry, int value, const wxString& file)
{
    wxString buf;
    buf.Printf(wxT("%d"), value);

    return wxWriteResource(section, entry, buf, file);
}

bool wxGetResource(const wxString& section, const wxString& entry, char **value, const wxString& file)
{
    // TODO
    return false;
}

bool wxGetResource(const wxString& section, const wxString& entry, float *value, const wxString& file)
{
    char *s = NULL;
    bool succ = wxGetResource(section, entry, (char **)&s, file);
    if (succ)
    {
        *value = (float)strtod(s, NULL);
        delete[] s;
        return true;
    }
    else return false;
}

bool wxGetResource(const wxString& section, const wxString& entry, long *value, const wxString& file)
{
    char *s = NULL;
    bool succ = wxGetResource(section, entry, (char **)&s, file);
    if (succ)
    {
        *value = strtol(s, NULL, 10);
        delete[] s;
        return true;
    }
    else return false;
}

bool wxGetResource(const wxString& section, const wxString& entry, int *value, const wxString& file)
{
    char *s = NULL;
    bool succ = wxGetResource(section, entry, (char **)&s, file);
    if (succ)
    {
        *value = (int)strtol(s, NULL, 10);
        delete[] s;
        return true;
    }
    else return false;
}
#endif // wxUSE_RESOURCES

int gs_wxBusyCursorCount = 0;
extern wxCursor    gMacCurrentCursor ;
wxCursor        gMacStoredActiveCursor ;

// Set the cursor to the busy cursor for all windows
void wxBeginBusyCursor(const wxCursor *cursor)
{
    if (gs_wxBusyCursorCount++ == 0)
    {
        gMacStoredActiveCursor = gMacCurrentCursor ;
        cursor->MacInstall() ;
    }
    //else: nothing to do, already set
}

// Restore cursor to normal
void wxEndBusyCursor()
{
    wxCHECK_RET( gs_wxBusyCursorCount > 0,
        wxT("no matching wxBeginBusyCursor() for wxEndBusyCursor()") );

    if (--gs_wxBusyCursorCount == 0)
    {
        gMacStoredActiveCursor.MacInstall() ;
        gMacStoredActiveCursor = wxNullCursor ;
    }
}

// true if we're between the above two calls
bool wxIsBusy()
{
    return (gs_wxBusyCursorCount > 0);
}

#endif // wxUSE_GUI

#if wxUSE_BASE

wxString wxMacFindFolderNoSeparator( short        vol,
              OSType       folderType,
              Boolean      createFolder)
{
    short    vRefNum  ;
    long     dirID ;
    wxString strDir ;

    if ( FindFolder( vol, folderType, createFolder, &vRefNum, &dirID) == noErr)
    {
        FSSpec file ;
        if ( FSMakeFSSpec( vRefNum , dirID , "\p" , &file ) == noErr )
        {
            strDir = wxMacFSSpec2MacFilename( &file );
        }
    }
    return strDir ;
}

wxString wxMacFindFolder( short        vol,
              OSType       folderType,
              Boolean      createFolder)
{
    return wxMacFindFolderNoSeparator(vol, folderType, createFolder) + wxFILE_SEP_PATH;
}

#endif // wxUSE_BASE

#if wxUSE_GUI

// Check whether this window wants to process messages, e.g. Stop button
// in long calculations.
bool wxCheckForInterrupt(wxWindow *wnd)
{
    // TODO
    return false;
}

void wxGetMousePosition( int* x, int* y )
{
    Point pt ;

    GetMouse( &pt ) ;
    LocalToGlobal( &pt ) ;
    *x = pt.h ;
    *y = pt.v ;
};

// Return true if we have a colour display
bool wxColourDisplay()
{
    return true;
}

// Returns depth of screen
int wxDisplayDepth()
{
    Rect globRect ;
    SetRect(&globRect, -32760, -32760, 32760, 32760);
    GDHandle    theMaxDevice;

    int theDepth = 8;
    theMaxDevice = GetMaxDevice(&globRect);
    if (theMaxDevice != nil)
        theDepth = (**(**theMaxDevice).gdPMap).pixelSize;

    return theDepth ;
}

// Get size of display
void wxDisplaySize(int *width, int *height)
{
    BitMap screenBits;
    GetQDGlobalsScreenBits( &screenBits );

    if (width != NULL) {
        *width = screenBits.bounds.right - screenBits.bounds.left  ;
    }
    if (height != NULL) {
        *height = screenBits.bounds.bottom - screenBits.bounds.top ;
    }
}

void wxDisplaySizeMM(int *width, int *height)
{
    wxDisplaySize(width, height);
    // on mac 72 is fixed (at least now ;-)
    float cvPt2Mm = 25.4 / 72;

    if (width != NULL) {
        *width = int( *width * cvPt2Mm );
    }
    if (height != NULL) {
        *height = int( *height * cvPt2Mm );
    }
}

void wxClientDisplayRect(int *x, int *y, int *width, int *height)
{
#if TARGET_CARBON
    Rect r ;
    GetAvailableWindowPositioningBounds( GetMainDevice() , &r ) ;
    if ( x )
        *x = r.left ;
    if ( y )
        *y = r.top ;
    if ( width )
        *width = r.right - r.left ;
    if ( height )
        *height = r.bottom - r.top ;
#else
    BitMap screenBits;
    GetQDGlobalsScreenBits( &screenBits );