filedlg.cpp

来自「A*算法 A*算法 A*算法 A*算法A*算法A*算法」· C++ 代码 · 共 554 行 · 第 1/2 页

/////////////////////////////////////////////////////////////////////////////
// Name:        src/msw/filedlg.cpp
// Purpose:     wxFileDialog
// Author:      Julian Smart
// Modified by:
// Created:     01/02/97
// RCS-ID:      $Id: filedlg.cpp,v 1.77.2.2 2006/02/13 03:25:37 KH Exp $
// Copyright:   (c) Julian Smart
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

// ============================================================================
// declarations
// ============================================================================

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

#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
    #pragma implementation "filedlg.h"
#endif

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
    #pragma hdrstop
#endif

#if wxUSE_FILEDLG && !(defined(__SMARTPHONE__) && defined(__WXWINCE__))

#ifndef WX_PRECOMP
    #include "wx/utils.h"
    #include "wx/msgdlg.h"
    #include "wx/filedlg.h"
    #include "wx/filefn.h"
    #include "wx/intl.h"
    #include "wx/log.h"
    #include "wx/app.h"
#endif

#include "wx/msw/wrapcdlg.h"

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

#include "wx/filename.h"
#include "wx/tokenzr.h"
#include "wx/math.h"

#include "wx/msw/missing.h"

// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------

#ifdef __WIN32__
# define wxMAXPATH   65534
#else
# define wxMAXPATH   1024
#endif

# define wxMAXFILE   1024

# define wxMAXEXT    5

// ----------------------------------------------------------------------------
// globals
// ----------------------------------------------------------------------------

// standard dialog size
static wxRect gs_rectDialog(0, 0, 428, 266);

// ============================================================================
// implementation
// ============================================================================

IMPLEMENT_CLASS(wxFileDialog, wxFileDialogBase)

// ----------------------------------------------------------------------------
// hook function for moving the dialog
// ----------------------------------------------------------------------------

UINT_PTR APIENTRY
wxFileDialogHookFunction(HWND      hDlg,
                         UINT      iMsg,
                         WPARAM    WXUNUSED(wParam),
                         LPARAM    lParam)
{
    HWND   hwndDialog;
    hwndDialog = ::GetParent( hDlg );
    switch (iMsg)
    {
        case WM_DESTROY:
            {
                RECT dlgRect;
                GetWindowRect( hwndDialog, & dlgRect );
                gs_rectDialog.x = dlgRect.left;
                gs_rectDialog.y = dlgRect.top;
                gs_rectDialog.width = dlgRect.right - dlgRect.left;
                gs_rectDialog.height = dlgRect.bottom - dlgRect.top;
            }
            break;

        case WM_NOTIFY:
            {
                OFNOTIFY *   pNotifyCode;
                pNotifyCode = (LPOFNOTIFY) lParam;
                if (CDN_INITDONE == (pNotifyCode->hdr).code)
                {
                    SetWindowPos( hwndDialog, HWND_TOP,
                                  gs_rectDialog.x,
                                  gs_rectDialog.y,
                                  gs_rectDialog.width,
                                  gs_rectDialog.height,
                                  SWP_NOZORDER|SWP_NOSIZE);
                 }
            }
            break;
    }

    // do the default processing
    return 0;
}

// ----------------------------------------------------------------------------
// wxFileDialog
// ----------------------------------------------------------------------------

wxFileDialog::wxFileDialog(wxWindow *parent,
                           const wxString& message,
                           const wxString& defaultDir,
                           const wxString& defaultFileName,
                           const wxString& wildCard,
                           long style,
                           const wxPoint& pos)
            : wxFileDialogBase(parent, message, defaultDir, defaultFileName,
                               wildCard, style, pos)

{
    if ( ( m_dialogStyle & wxMULTIPLE ) && ( m_dialogStyle & wxSAVE ) )
        m_dialogStyle &= ~wxMULTIPLE;

    m_bMovedWindow = false;

    // Must set to zero, otherwise the wx routines won't size the window
    // the second time you call the file dialog, because it thinks it is
    // already at the requested size.. (when centering)
    gs_rectDialog.x =
    gs_rectDialog.y = 0;

}
void wxFileDialog::GetPaths(wxArrayString& paths) const
{
    paths.Empty();

    wxString dir(m_dir);
    if ( m_dir.Last() != _T('\\') )
        dir += _T('\\');

    size_t count = m_fileNames.GetCount();
    for ( size_t n = 0; n < count; n++ )
    {
        if (wxFileName(m_fileNames[n]).IsAbsolute())
            paths.Add(m_fileNames[n]);
        else
            paths.Add(dir + m_fileNames[n]);
    }
}

void wxFileDialog::GetFilenames(wxArrayString& files) const
{
    files = m_fileNames;
}

void wxFileDialog::SetPath(const wxString& path)
{
    wxString ext;
    wxSplitPath(path, &m_dir, &m_fileName, &ext);
    if ( !ext.empty() )
        m_fileName << _T('.') << ext;
}

void wxFileDialog::DoGetPosition( int *x, int *y ) const
{
    *x = gs_rectDialog.x;
    *y = gs_rectDialog.y;
}


void wxFileDialog::DoGetSize(int *width, int *height) const
{
    *width  = gs_rectDialog.width;
    *height = gs_rectDialog.height;
}

void wxFileDialog::DoMoveWindow(int x, int y, int WXUNUSED(width), int WXUNUSED(height))
{
    m_bMovedWindow = true;

    gs_rectDialog.x = x;
    gs_rectDialog.y = y;

    /*
        The width and height can not be set by the programmer
        its just not possible.  But the program can get the
        size of the Dlg after it has been shown, in case they need
        that data.
    */
}

int wxFileDialog::ShowModal()
{
    HWND hWnd = 0;
    if (m_parent) hWnd = (HWND) m_parent->GetHWND();
    if (!hWnd && wxTheApp->GetTopWindow())
        hWnd = (HWND) wxTheApp->GetTopWindow()->GetHWND();

    static wxChar fileNameBuffer [ wxMAXPATH ];           // the file-name
    wxChar        titleBuffer    [ wxMAXFILE+1+wxMAXEXT ];  // the file-name, without path

    *fileNameBuffer = wxT('\0');
    *titleBuffer    = wxT('\0');

#if WXWIN_COMPATIBILITY_2_4
    long msw_flags = 0;
    if ( (m_dialogStyle & wxHIDE_READONLY) || (m_dialogStyle & wxSAVE) )
        msw_flags |= OFN_HIDEREADONLY;
#else
    long msw_flags = OFN_HIDEREADONLY;
#endif

    if ( m_dialogStyle & wxFILE_MUST_EXIST )
        msw_flags |= OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST;
    /*
        If the window has been moved the programmer is probably
        trying to center or position it.  Thus we set the callback
        or hook function so that we can actually adjust the position.
        Without moving or centering the dlg, it will just stay
        in the upper left of the frame, it does not center
        automatically..  One additional note, when the hook is
        enabled, the PLACES BAR in the dlg (shown on later versions
        of windows (2000 and XP) will automatically be turned off
        according to the MSDN docs.  This is normal.  If the
        programmer needs the PLACES BAR (left side of dlg) they
        just shouldn't move or center the dlg.
    */
    if (m_bMovedWindow) // we need these flags.
    {
        msw_flags |= OFN_EXPLORER|OFN_ENABLEHOOK;
#ifndef __WXWINCE__
        msw_flags |= OFN_ENABLESIZING;
#endif
    }

    if (m_dialogStyle & wxMULTIPLE )
    {
        // OFN_EXPLORER must always be specified with OFN_ALLOWMULTISELECT
        msw_flags |= OFN_EXPLORER | OFN_ALLOWMULTISELECT;
    }

    // if wxCHANGE_DIR flag is not given we shouldn't change the CWD which the
    // standard dialog does by default (notice that under NT it does it anyhow, 
    // OFN_NOCHANGEDIR or not, see below)
    if ( !(m_dialogStyle & wxCHANGE_DIR) )
    {
        msw_flags |= OFN_NOCHANGEDIR;
    }

    if ( m_dialogStyle & wxOVERWRITE_PROMPT )
    {
        msw_flags |= OFN_OVERWRITEPROMPT;
    }

    OPENFILENAME of;
    wxZeroMemory(of);