src/generic/progdlgg.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        progdlgg.h
   3 // Purpose:     wxProgressDialog class
   4 // Author:      Karsten Ballüder
   5 // Modified by:
   6 // Created:     09.05.1999
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Karsten Ballüder
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "progdlgg.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24 #include "wx/utils.h"
  25 #include "wx/frame.h"
  26 #include "wx/button.h"
  27 #include "wx/stattext.h"
  28 #include "wx/layout.h"
  29 #include "wx/event.h"
  30 #include "wx/gauge.h"
  31 #include "wx/intl.h"
  32 #endif
  33
  34 #include "wx/generic/progdlgg.h"
  35
  36 #define LAYOUT_X_MARGIN 8
  37 #define LAYOUT_Y_MARGIN 8
  38
  39 // wxTextEntryDialog
  40
  41 #if !USE_SHARED_LIBRARY
  42     BEGIN_EVENT_TABLE(wxProgressDialog, wxFrame)
  43        EVT_BUTTON(-1, wxProgressDialog::OnCancel)
  44        EVT_CLOSE(wxProgressDialog::OnClose)
  45     END_EVENT_TABLE()
  46
  47     IMPLEMENT_CLASS(wxProgressDialog, wxFrame)
  48 #endif
  49
  50 wxProgressDialog::wxProgressDialog(wxString const &title,
  51                                  wxString const &message,
  52                                  int maximum,
  53                                  wxWindow *parent,
  54                                  int style)
  55 {
  56    bool hasAbortButton = (style & wxPD_CAN_ABORT) != 0;
  57    m_state = hasAbortButton ? Continue : Uncancelable;
  58    m_disableParentOnly = (style & wxPD_APP_MODAL) == 0;
  59    m_parent = parent;
  60    m_maximum = maximum;
  61
  62    int height = 70;     // FIXME arbitrary numbers
  63    if ( hasAbortButton )
  64       height += 35;
  65    wxFrame::Create(m_parent, -1, title,
  66                    wxPoint(0, 0), wxSize(220, height),
  67                    wxDEFAULT_DIALOG_STYLE);
  68
  69    wxLayoutConstraints *c;
  70
  71    m_msg = new wxStaticText(this, -1, message);
  72    c = new wxLayoutConstraints;
  73    c->left.SameAs(this, wxLeft, 10);
  74    c->top.SameAs(this, wxTop, 10);
  75    c->width.AsIs();
  76    c->height.AsIs();
  77    m_msg->SetConstraints(c);
  78
  79    if ( maximum > 0 )
  80    {
  81       m_gauge = new wxGauge(this, -1, maximum);
  82       c = new wxLayoutConstraints;
  83       c->left.SameAs(this, wxLeft, 2*LAYOUT_X_MARGIN);
  84       c->top.Below(m_msg, 2*LAYOUT_Y_MARGIN);
  85       c->right.SameAs(this, wxRight, 2*LAYOUT_X_MARGIN);
  86       c->height.AsIs();
  87       m_gauge->SetConstraints(c);
  88       m_gauge->SetValue(0);
  89    }
  90    else
  91       m_gauge = (wxGauge *)NULL;
  92
  93    if ( hasAbortButton )
  94    {
  95       m_btnAbort = new wxButton(this, -1, _("Cancel"));
  96       c = new wxLayoutConstraints;
  97       c->centreX.SameAs(this, wxCentreX);
  98       if(m_gauge)
  99          c->top.Below(m_gauge, 2*LAYOUT_Y_MARGIN);
 100       else
 101          c->top.Below(m_btnAbort, 2*LAYOUT_Y_MARGIN);
 102       c->width.AsIs();
 103       c->height.AsIs();
 104       m_btnAbort->SetConstraints(c);
 105    }
 106    else
 107       m_btnAbort = (wxButton *)NULL;
 108
 109    SetAutoLayout(TRUE);
 110    Show(TRUE);
 111    Centre(wxCENTER_FRAME | wxBOTH);
 112
 113    if(m_disableParentOnly)
 114       m_parent->Enable(FALSE);
 115    else
 116       wxEnableTopLevelWindows(FALSE);
 117    Enable(TRUE); // enable this window
 118    wxYield();
 119 }
 120
 121
 122 bool
 123 wxProgressDialog::Update(int value, const wxString& newmsg)
 124 {
 125    wxASSERT_MSG( value == -1 || m_gauge, "can't update non existent dialog" );
 126    wxASSERT_MSG( value < m_maximum, "invalid progress value" );
 127
 128    if( m_gauge )
 129       m_gauge->SetValue(value + 1);
 130    if( !newmsg.IsEmpty() )
 131       m_msg->SetLabel(newmsg);
 132    wxYield();
 133
 134    if ( (value == m_maximum - 1) && !(GetWindowStyleFlag() & wxPD_AUTO_HIDE) )
 135    {
 136        if ( m_btnAbort )
 137        {
 138            // tell the user what he should do...
 139            m_btnAbort->SetLabel(_("Close"));
 140        }
 141
 142        if ( !newmsg )
 143        {
 144            // also provide the finishing message if the application didn't
 145            m_msg->SetLabel(_("Done."));
 146        }
 147
 148        m_state = Finished;
 149        while ( m_state != Canceled ) // set from OnClose()
 150            wxYield();
 151
 152        // so that we return TRUE below
 153        m_state = Finished;
 154    }
 155
 156    return m_state != Canceled;
 157 }
 158
 159 void wxProgressDialog::OnClose(wxCloseEvent& event)
 160 {
 161    if ( m_state == Uncancelable )
 162       event.Veto(TRUE);
 163    else
 164       m_state = Canceled;
 165 }
 166
 167
 168 wxProgressDialog::~wxProgressDialog()
 169 {
 170    if ( m_disableParentOnly )
 171       m_parent->Enable(TRUE);
 172    else
 173       wxEnableTopLevelWindows(TRUE);
 174 }