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 licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  21     #pragma implementation "progdlgg.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #if wxUSE_PROGRESSDLG
  32
  33 #ifndef WX_PRECOMP
  34     #include "wx/utils.h"
  35     #include "wx/frame.h"
  36     #include "wx/button.h"
  37     #include "wx/stattext.h"
  38     #include "wx/sizer.h"
  39     #include "wx/event.h"
  40     #include "wx/gauge.h"
  41     #include "wx/intl.h"
  42     #include "wx/settings.h"
  43     #include "wx/dcclient.h"
  44     #include "wx/timer.h"
  45 #endif
  46
  47 #include "wx/generic/progdlgg.h"
  48
  49 // ---------------------------------------------------------------------------
  50 // macros
  51 // ---------------------------------------------------------------------------
  52
  53 /* Macro for avoiding #ifdefs when value have to be different depending on size of
  54    device we display on
  55  */
  56
  57 #if defined(__SMARTPHONE__)
  58     #define wxLARGESMALL(large,small) small
  59 #else
  60     #define wxLARGESMALL(large,small) large
  61 #endif
  62
  63 // ----------------------------------------------------------------------------
  64 // constants
  65 // ----------------------------------------------------------------------------
  66
  67 #define LAYOUT_MARGIN wxLARGESMALL(8,2)
  68
  69 // ----------------------------------------------------------------------------
  70 // private functions
  71 // ----------------------------------------------------------------------------
  72
  73 // update the label to show the given time (in seconds)
  74 static void SetTimeLabel(unsigned long val, wxStaticText *label);
  75
  76 // ----------------------------------------------------------------------------
  77 // event tables
  78 // ----------------------------------------------------------------------------
  79
  80 BEGIN_EVENT_TABLE(wxProgressDialog, wxDialog)
  81     EVT_BUTTON(wxID_CANCEL, wxProgressDialog::OnCancel)
  82
  83     EVT_CLOSE(wxProgressDialog::OnClose)
  84 END_EVENT_TABLE()
  85
  86 IMPLEMENT_CLASS(wxProgressDialog, wxDialog)
  87
  88 // ============================================================================
  89 // wxProgressDialog implementation
  90 // ============================================================================
  91
  92 // ----------------------------------------------------------------------------
  93 // wxProgressDialog creation
  94 // ----------------------------------------------------------------------------
  95
  96 wxProgressDialog::wxProgressDialog(wxString const &title,
  97                                    wxString const &message,
  98                                    int maximum,
  99                                    wxWindow *parent,
 100                                    int style)
 101                 : wxDialog(parent, wxID_ANY, title),
 102                   m_delay(3)
 103 {
 104     // we may disappear at any moment, let the others know about it
 105     SetExtraStyle(GetExtraStyle() | wxWS_EX_TRANSIENT);
 106
 107     m_windowStyle |= style;
 108
 109     bool hasAbortButton = (style & wxPD_CAN_ABORT) != 0;
 110
 111 #if defined(__WXMSW__) && !defined(__WXUNIVERSAL__)
 112     // we have to remove the "Close" button from the title bar then as it is
 113     // confusing to have it - it doesn't work anyhow
 114     //
 115     // FIXME: should probably have a (extended?) window style for this
 116     if ( !hasAbortButton )
 117     {
 118         EnableCloseButton(false);
 119     }
 120 #endif // wxMSW
 121
 122 #if defined(__SMARTPHONE__)
 123     SetLeftMenu();
 124 #endif
 125
 126     m_state = hasAbortButton ? Continue : Uncancelable;
 127     m_maximum = maximum;
 128
 129 #if defined(__WXMSW__) || defined(__WXPM__)
 130     // we can't have values > 65,536 in the progress control under Windows, so
 131     // scale everything down
 132     m_factor = m_maximum / 65536 + 1;
 133     m_maximum /= m_factor;
 134 #endif // __WXMSW__
 135
 136     m_parentTop = wxGetTopLevelParent(parent);
 137
 138     wxClientDC dc(this);
 139     dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
 140     long widthText;
 141     dc.GetTextExtent(message, &widthText, NULL, NULL, NULL, NULL);
 142
 143     wxBoxSizer *sizer = new wxBoxSizer(wxVERTICAL);
 144
 145     m_msg = new wxStaticText(this, wxID_ANY, message);
 146     sizer->Add(m_msg, 0, wxLEFT | wxTOP, 2*LAYOUT_MARGIN);
 147
 148     wxSize sizeDlg,
 149            sizeLabel = m_msg->GetSize();
 150     sizeDlg.y = 2*LAYOUT_MARGIN + sizeLabel.y;
 151
 152     if ( maximum > 0 )
 153     {
 154         // note that we can't use wxGA_SMOOTH because it happens to
 155         // cause the dialog to be modal. Have an extra
 156         // style argument to wxProgressDialog, perhaps.
 157         m_gauge = new wxGauge(this, wxID_ANY, m_maximum,
 158                               wxDefaultPosition, wxDefaultSize,
 159                               wxGA_HORIZONTAL);
 160
 161         sizer->Add(m_gauge, 0, wxLEFT | wxRIGHT | wxTOP | wxEXPAND, 2*LAYOUT_MARGIN);
 162         m_gauge->SetValue(0);
 163
 164         wxSize sizeGauge = m_gauge->GetSize();
 165         sizeDlg.y += 2*LAYOUT_MARGIN + sizeGauge.y;
 166     }
 167     else
 168         m_gauge = (wxGauge *)NULL;
 169
 170     // create the estimated/remaining/total time zones if requested
 171     m_elapsed = m_estimated = m_remaining = (wxStaticText*)NULL;
 172     m_display_estimated = m_last_timeupdate = m_break = 0;
 173     m_ctdelay = 0;
 174
 175     // if we are going to have at least one label, remmeber it in this var
 176     wxStaticText *label = NULL;
 177
 178     // also count how many labels we really have
 179     size_t nTimeLabels = 0;
 180
 181     if ( style & wxPD_ELAPSED_TIME )
 182     {
 183         nTimeLabels++;
 184
 185         label =
 186         m_elapsed = CreateLabel(_("Elapsed time : "), sizer);
 187     }
 188
 189     if ( style & wxPD_ESTIMATED_TIME )
 190     {
 191         nTimeLabels++;
 192
 193         label =
 194         m_estimated = CreateLabel(_("Estimated time : "), sizer);
 195     }
 196
 197     if ( style & wxPD_REMAINING_TIME )
 198     {
 199         nTimeLabels++;
 200
 201         label =
 202         m_remaining = CreateLabel(_("Remaining time : "), sizer);
 203     }
 204
 205     if ( nTimeLabels > 0 )
 206     {
 207         // set it to the current time
 208         m_timeStart = wxGetCurrentTime();
 209         sizeDlg.y += nTimeLabels * (label->GetSize().y + LAYOUT_MARGIN);
 210     }
 211
 212     if ( hasAbortButton )
 213     {
 214 #if defined(__SMARTPHONE__)
 215         SetLeftMenu(wxID_CANCEL, _("Cancel"));
 216     }
 217 #else
 218         m_btnAbort = new wxButton(this, wxID_CANCEL);
 219
 220         // Windows dialogs usually have buttons in the lower right corner
 221 #if defined(__WXMSW__) || defined(__WXPM__)
 222         sizer->Add(m_btnAbort, 0, wxALIGN_RIGHT | wxALL, 2*LAYOUT_MARGIN);
 223 #else // !MSW
 224         sizer->Add(m_btnAbort, 0, wxALIGN_CENTER_HORIZONTAL | wxBOTTOM | wxTOP, 2*LAYOUT_MARGIN);
 225 #endif // MSW/!MSW
 226         sizeDlg.y += 2*LAYOUT_MARGIN + wxButton::GetDefaultSize().y;
 227     }
 228     else // no "Cancel" button
 229 #endif // __SMARTPHONE__/!__SMARTPHONE__
 230     {
 231         m_btnAbort = (wxButton *)NULL;
 232     }
 233
 234     SetSizerAndFit(sizer);
 235
 236     sizeDlg.y += 2*LAYOUT_MARGIN;
 237
 238     // try to make the dialog not square but rectangular of reasonabel width
 239     sizeDlg.x = (wxCoord)wxMax(widthText, 4*sizeDlg.y/3);
 240     sizeDlg.x *= 3;
 241     sizeDlg.x /= 2;
 242     SetClientSize(sizeDlg);
 243
 244     Centre(wxCENTER_FRAME | wxBOTH);
 245
 246     if ( style & wxPD_APP_MODAL )
 247     {
 248         m_winDisabler = new wxWindowDisabler(this);
 249     }
 250     else
 251     {
 252         if ( m_parentTop )
 253             m_parentTop->Disable();
 254         m_winDisabler = NULL;
 255     }
 256
 257     Show();
 258     Enable();
 259
 260     // this one can be initialized even if the others are unknown for now
 261     //
 262     // NB: do it after calling Layout() to keep the labels correctly aligned
 263     if ( m_elapsed )
 264     {
 265         SetTimeLabel(0, m_elapsed);
 266     }
 267
 268     Update();
 269 }
 270
 271 wxStaticText *wxProgressDialog::CreateLabel(const wxString& text,
 272                                             wxSizer *sizer)
 273 {
 274     wxBoxSizer *locsizer = new wxBoxSizer(wxLARGESMALL(wxHORIZONTAL,wxVERTICAL));
 275
 276     wxStaticText *dummy = new wxStaticText(this, wxID_ANY, text);
 277     wxStaticText *label = new wxStaticText(this, wxID_ANY, _("unknown"));
 278
 279     // select placement most native or nice on target GUI
 280 #if defined(__SMARTPHONE__)
 281     // label and time to the left in two rows
 282     locsizer->Add(dummy, 1, wxALIGN_LEFT);
 283     locsizer->Add(label, 1, wxALIGN_LEFT);
 284     sizer->Add(locsizer, 0, wxALIGN_LEFT | wxTOP | wxLEFT, LAYOUT_MARGIN);
 285 #elif defined(__WXMSW__) || defined(__WXPM__) || defined(__WXMAC__)
 286     // label and time centered in one row
 287     locsizer->Add(dummy, 1, wxLARGESMALL(wxALIGN_RIGHT,wxALIGN_LEFT));
 288     locsizer->Add(label, 1, wxALIGN_LEFT | wxLEFT, LAYOUT_MARGIN);
 289     sizer->Add(locsizer, 0, wxALIGN_CENTER_HORIZONTAL | wxTOP, LAYOUT_MARGIN);
 290 #else
 291     // label and time to the right in one row
 292     sizer->Add(locsizer, 0, wxALIGN_RIGHT | wxRIGHT | wxTOP, LAYOUT_MARGIN);
 293     locsizer->Add(dummy);
 294     locsizer->Add(label, 0, wxLEFT, LAYOUT_MARGIN);
 295 #endif
 296
 297     return label;
 298 }
 299
 300 // ----------------------------------------------------------------------------
 301 // wxProgressDialog operations
 302 // ----------------------------------------------------------------------------
 303
 304 bool
 305 wxProgressDialog::Update(int value, const wxString& newmsg)
 306 {
 307     wxASSERT_MSG( value == -1 || m_gauge, wxT("cannot update non existent dialog") );
 308
 309 #ifdef __WXMSW__
 310     value /= m_factor;
 311 #endif // __WXMSW__
 312
 313     wxASSERT_MSG( value <= m_maximum, wxT("invalid progress value") );
 314
 315     // fill up the gauge if value == maximum because this means that the dialog
 316     // is going to close and the gauge shouldn't be partly empty in this case
 317     if ( m_gauge && value <= m_maximum )
 318     {
 319         m_gauge->SetValue(value == m_maximum ? value : value + 1);
 320     }
 321
 322     if ( !newmsg.IsEmpty() )
 323     {
 324         m_msg->SetLabel(newmsg);
 325
 326         wxYieldIfNeeded() ;
 327     }
 328
 329     if ( (m_elapsed || m_remaining || m_estimated) && (value != 0) )
 330     {
 331         unsigned long elapsed = wxGetCurrentTime() - m_timeStart;
 332         if (    m_last_timeupdate < elapsed
 333              || value == m_maximum
 334            )
 335         {
 336             m_last_timeupdate = elapsed;
 337             unsigned long estimated = m_break +
 338                   (unsigned long)(( (double) (elapsed-m_break) * m_maximum ) / ((double)value)) ;
 339             if (    estimated > m_display_estimated
 340                  && m_ctdelay >= 0
 341                )
 342             {
 343                 ++m_ctdelay;
 344             }
 345             else if (    estimated < m_display_estimated
 346                       && m_ctdelay <= 0
 347                     )
 348             {
 349                 --m_ctdelay;
 350             }
 351             else
 352             {
 353                 m_ctdelay = 0;
 354             }
 355             if (    m_ctdelay >= m_delay          // enough confirmations for a higher value
 356                  || m_ctdelay <= (m_delay*-1)     // enough confirmations for a lower value
 357                  || value == m_maximum            // to stay consistent
 358                  || elapsed > m_display_estimated // to stay consistent
 359                  || ( elapsed > 0 && elapsed < 4 ) // additional updates in the beginning
 360                )
 361             {
 362                 m_display_estimated = estimated;
 363                 m_ctdelay = 0;
 364             }
 365         }
 366
 367         long display_remaining = m_display_estimated - elapsed;
 368         if ( display_remaining < 0 )
 369         {
 370             display_remaining = 0;
 371         }
 372
 373         SetTimeLabel(elapsed, m_elapsed);
 374         SetTimeLabel(m_display_estimated, m_estimated);
 375         SetTimeLabel(display_remaining, m_remaining);
 376     }
 377
 378     if ( value == m_maximum )
 379     {
 380         if ( m_state == Finished )
 381         {
 382             // ignore multiple calls to Update(m_maximum): it may sometimes be
 383             // troublesome to ensure that Update() is not called twice with the
 384             // same value (e.g. because of the rounding errors) and if we don't
 385             // return now we're going to generate asserts below
 386             return true;
 387         }
 388
 389         // so that we return true below and that out [Cancel] handler knew what
 390         // to do
 391         m_state = Finished;
 392         if( !(GetWindowStyle() & wxPD_AUTO_HIDE) )
 393         {
 394 #if defined(__SMARTPHONE__)
 395             SetLeftMenu(wxID_CANCEL, _("Close"));
 396 #endif
 397             if ( m_btnAbort )
 398             {
 399                 // tell the user what he should do...
 400                 m_btnAbort->SetLabel(_("Close"));
 401             }
 402 #if defined(__WXMSW__) && !defined(__WXUNIVERSAL__)
 403             else // enable the button to give the user a way to close the dlg
 404             {
 405                 EnableCloseButton();
 406             }
 407 #endif // __WXMSW__
 408
 409             if ( !newmsg )
 410             {
 411                 // also provide the finishing message if the application didn't
 412                 m_msg->SetLabel(_("Done."));
 413             }
 414
 415             wxYieldIfNeeded() ;
 416
 417             (void)ShowModal();
 418         }
 419         else // auto hide
 420         {
 421             // reenable other windows before hiding this one because otherwise
 422             // Windows wouldn't give the focus back to the window which had
 423             // been previously focused because it would still be disabled
 424             ReenableOtherWindows();
 425
 426             Hide();
 427         }
 428     }
 429     else
 430     {
 431         // we have to yield because not only we want to update the display but
 432         // also to process the clicks on the cancel button
 433         wxYieldIfNeeded() ;
 434     }
 435
 436     // update the display in case yielding above didn't do it
 437     Update();
 438
 439     return m_state != Canceled;
 440 }
 441
 442 void wxProgressDialog::Resume()
 443 {
 444     m_state = Continue;
 445     m_ctdelay = m_delay; // force an update of the elapsed/estimated/remaining time
 446     m_break += wxGetCurrentTime()-m_timeStop;
 447
 448     // it may have been disabled by OnCancel(), so enable it back to let the
 449     // user interrupt us again if needed
 450     if(m_btnAbort)
 451         m_btnAbort->Enable();
 452 #if defined(__SMARTPHONE__)
 453     SetLeftMenu(wxID_CANCEL, _("Cancel"));
 454 #endif
 455 }
 456
 457 bool wxProgressDialog::Show( bool show )
 458 {
 459     // reenable other windows before hiding this one because otherwise
 460     // Windows wouldn't give the focus back to the window which had
 461     // been previously focused because it would still be disabled
 462     if(!show)
 463         ReenableOtherWindows();
 464
 465     return wxDialog::Show(show);
 466 }
 467
 468 // ----------------------------------------------------------------------------
 469 // event handlers
 470 // ----------------------------------------------------------------------------
 471
 472 void wxProgressDialog::OnCancel(wxCommandEvent& event)
 473 {
 474     if ( m_state == Finished )
 475     {
 476         // this means that the count down is already finished and we're being
 477         // shown as a modal dialog - so just let the default handler do the job
 478         event.Skip();
 479     }
 480     else
 481     {
 482         // request to cancel was received, the next time Update() is called we
 483         // will handle it
 484         m_state = Canceled;
 485
 486         // update the button state immediately so that the user knows that the
 487         // request has been noticed
 488         if(m_btnAbort)
 489             m_btnAbort->Disable();
 490
 491 #if defined(__SMARTPHONE__)
 492         SetLeftMenu();
 493 #endif
 494
 495         // save the time when the dialog was stopped
 496         m_timeStop = wxGetCurrentTime();
 497     }
 498 }
 499
 500 void wxProgressDialog::OnClose(wxCloseEvent& event)
 501 {
 502     if ( m_state == Uncancelable )
 503     {
 504         // can't close this dialog
 505         event.Veto();
 506     }
 507     else if ( m_state == Finished )
 508     {
 509         // let the default handler close the window as we already terminated
 510         event.Skip();
 511     }
 512     else
 513     {
 514         // next Update() will notice it
 515         m_state = Canceled;
 516         if(m_btnAbort)
 517             m_btnAbort->Disable();
 518 #if defined(__SMARTPHONE__)
 519         SetLeftMenu();
 520 #endif
 521         m_timeStop = wxGetCurrentTime();
 522     }
 523 }
 524
 525 // ----------------------------------------------------------------------------
 526 // destruction
 527 // ----------------------------------------------------------------------------
 528
 529 wxProgressDialog::~wxProgressDialog()
 530 {
 531     // normally this should have been already done, but just in case
 532     ReenableOtherWindows();
 533 }
 534
 535 void wxProgressDialog::ReenableOtherWindows()
 536 {
 537     if ( GetWindowStyle() & wxPD_APP_MODAL )
 538     {
 539         delete m_winDisabler;
 540         m_winDisabler = (wxWindowDisabler *)NULL;
 541     }
 542     else
 543     {
 544         if ( m_parentTop )
 545             m_parentTop->Enable();
 546     }
 547 }
 548
 549 // ----------------------------------------------------------------------------
 550 // private functions
 551 // ----------------------------------------------------------------------------
 552
 553 static void SetTimeLabel(unsigned long val, wxStaticText *label)
 554 {
 555     if ( label )
 556     {
 557         wxString s;
 558         unsigned long hours = val / 3600;
 559         unsigned long minutes = (val % 3600) / 60;
 560         unsigned long seconds = val % 60;
 561         s.Printf(wxT("%lu:%02lu:%02lu"), hours, minutes, seconds);
 562
 563         if ( s != label->GetLabel() )
 564             label->SetLabel(s);
 565     }
 566 }
 567
 568 #endif // wxUSE_PROGRESSDLG