samples/widgets/widgets.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Program:     wxWidgets Widgets Sample
   3 // Name:        widgets.cpp
   4 // Purpose:     Sample showing most of the simple wxWidgets widgets
   5 // Author:      Vadim Zeitlin
   6 // Created:     27.03.01
   7 // Id:          $Id$
   8 // Copyright:   (c) 2001 Vadim Zeitlin
   9 // License:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // for compilers that support precompilation, includes "wx/wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 // for all others, include the necessary headers
  28 #ifndef WX_PRECOMP
  29     #include "wx/app.h"
  30     #include "wx/log.h"
  31     #include "wx/frame.h"
  32     #include "wx/menu.h"
  33
  34     #include "wx/button.h"
  35     #include "wx/checkbox.h"
  36     #include "wx/listbox.h"
  37     #include "wx/statbox.h"
  38     #include "wx/stattext.h"
  39     #include "wx/textctrl.h"
  40 #endif
  41
  42 #include "wx/bookctrl.h"
  43 #include "wx/sizer.h"
  44 #include "wx/colordlg.h"
  45
  46 #include "widgets.h"
  47
  48 // ----------------------------------------------------------------------------
  49 // constants
  50 // ----------------------------------------------------------------------------
  51
  52 // control ids
  53 enum
  54 {
  55     Widgets_ClearLog = 100,
  56     Widgets_Quit,
  57     Widgets_SetFgColour,
  58     Widgets_SetBgColour
  59 };
  60
  61 // ----------------------------------------------------------------------------
  62 // our classes
  63 // ----------------------------------------------------------------------------
  64
  65 // Define a new application type, each program should derive a class from wxApp
  66 class WidgetsApp : public wxApp
  67 {
  68 public:
  69     // override base class virtuals
  70     // ----------------------------
  71
  72     // this one is called on application startup and is a good place for the app
  73     // initialization (doing it here and not in the ctor allows to have an error
  74     // return: if OnInit() returns false, the application terminates)
  75     virtual bool OnInit();
  76 };
  77
  78 // Define a new frame type: this is going to be our main frame
  79 class WidgetsFrame : public wxFrame
  80 {
  81 public:
  82     // ctor(s) and dtor
  83     WidgetsFrame(const wxString& title);
  84     virtual ~WidgetsFrame();
  85
  86 protected:
  87     // event handlers
  88 #if USE_LOG
  89     void OnButtonClearLog(wxCommandEvent& event);
  90 #endif // USE_LOG
  91     void OnExit(wxCommandEvent& event);
  92 #if wxUSE_MENUS
  93     void OnSetFgCol(wxCommandEvent& event);
  94     void OnSetBgCol(wxCommandEvent& event);
  95 #endif // wxUSE_MENUS
  96
  97     // initialize the book: add all pages to it
  98     void InitBook();
  99
 100 private:
 101     // the panel containing everything
 102     wxPanel *m_panel;
 103
 104 #if USE_LOG
 105     // the listbox for logging messages
 106     wxListBox *m_lboxLog;
 107
 108     // the log target we use to redirect messages to the listbox
 109     wxLog *m_logTarget;
 110 #endif // USE_LOG
 111
 112     // the book containing the test pages
 113     wxBookCtrl *m_book;
 114
 115     // and the image list for it
 116     wxImageList *m_imaglist;
 117
 118 #if wxUSE_MENUS
 119     // last chosen fg/bg colours
 120     wxColour m_colFg,
 121              m_colBg;
 122 #endif // wxUSE_MENUS
 123
 124     // any class wishing to process wxWidgets events must use this macro
 125     DECLARE_EVENT_TABLE()
 126 };
 127
 128 #if USE_LOG
 129 // A log target which just redirects the messages to a listbox
 130 class LboxLogger : public wxLog
 131 {
 132 public:
 133     LboxLogger(wxListBox *lbox, wxLog *logOld)
 134     {
 135         m_lbox = lbox;
 136         //m_lbox->Disable(); -- looks ugly under MSW
 137         m_logOld = logOld;
 138     }
 139
 140     virtual ~LboxLogger()
 141     {
 142         wxLog::SetActiveTarget(m_logOld);
 143     }
 144
 145 private:
 146     // implement sink functions
 147     virtual void DoLog(wxLogLevel level, const wxChar *szString, time_t t)
 148     {
 149         // don't put trace messages into listbox or we can get into infinite
 150         // recursion
 151         if ( level == wxLOG_Trace )
 152         {
 153             if ( m_logOld )
 154             {
 155                 // cast is needed to call protected method
 156                 ((LboxLogger *)m_logOld)->DoLog(level, szString, t);
 157             }
 158         }
 159         else
 160         {
 161             wxLog::DoLog(level, szString, t);
 162         }
 163     }
 164
 165     virtual void DoLogString(const wxChar *szString, time_t WXUNUSED(t))
 166     {
 167         wxString msg;
 168         TimeStamp(&msg);
 169         msg += szString;
 170
 171         #ifdef __WXUNIVERSAL__
 172             m_lbox->AppendAndEnsureVisible(msg);
 173         #else // other ports don't have this method yet
 174             m_lbox->Append(msg);
 175             m_lbox->SetFirstItem(m_lbox->GetCount() - 1);
 176         #endif
 177     }
 178
 179     // the control we use
 180     wxListBox *m_lbox;
 181
 182     // the old log target
 183     wxLog *m_logOld;
 184 };
 185 #endif // USE_LOG
 186
 187 // array of pages
 188 WX_DEFINE_ARRAY_PTR(WidgetsPage *, ArrayWidgetsPage);
 189
 190 // ----------------------------------------------------------------------------
 191 // misc macros
 192 // ----------------------------------------------------------------------------
 193
 194 IMPLEMENT_APP(WidgetsApp)
 195
 196 // ----------------------------------------------------------------------------
 197 // event tables
 198 // ----------------------------------------------------------------------------
 199
 200 BEGIN_EVENT_TABLE(WidgetsFrame, wxFrame)
 201 #if USE_LOG
 202     EVT_BUTTON(Widgets_ClearLog, WidgetsFrame::OnButtonClearLog)
 203 #endif // USE_LOG
 204     EVT_BUTTON(Widgets_Quit, WidgetsFrame::OnExit)
 205
 206     EVT_MENU(wxID_EXIT, WidgetsFrame::OnExit)
 207     EVT_MENU(Widgets_SetFgColour, WidgetsFrame::OnSetFgCol)
 208     EVT_MENU(Widgets_SetBgColour, WidgetsFrame::OnSetBgCol)
 209 END_EVENT_TABLE()
 210
 211 // ============================================================================
 212 // implementation
 213 // ============================================================================
 214
 215 // ----------------------------------------------------------------------------
 216 // app class
 217 // ----------------------------------------------------------------------------
 218
 219 bool WidgetsApp::OnInit()
 220 {
 221     if ( !wxApp::OnInit() )
 222         return false;
 223
 224     // the reason for having these ifdef's is that I often run two copies of
 225     // this sample side by side and it is useful to see which one is which
 226     wxString title;
 227 #if defined(__WXUNIVERSAL__)
 228     title = _T("wxUniv/");
 229 #endif
 230
 231 #if defined(__WXMSW__)
 232     title += _T("wxMSW");
 233 #elif defined(__WXGTK__)
 234     title += _T("wxGTK");
 235 #elif defined(__WXMAC__)
 236     title += _T("wxMAC");
 237 #elif defined(__WXMOTIF__)
 238     title += _T("wxMOTIF");
 239 #else
 240     title += _T("wxWidgets");
 241 #endif
 242
 243     wxFrame *frame = new WidgetsFrame(title + _T(" widgets demo"));
 244     frame->Show();
 245
 246     //wxLog::AddTraceMask(_T("listbox"));
 247     //wxLog::AddTraceMask(_T("scrollbar"));
 248     //wxLog::AddTraceMask(_T("focus"));
 249
 250     return true;
 251 }
 252
 253 // ----------------------------------------------------------------------------
 254 // WidgetsFrame construction
 255 // ----------------------------------------------------------------------------
 256
 257 WidgetsFrame::WidgetsFrame(const wxString& title)
 258             : wxFrame(NULL, wxID_ANY, title,
 259                       wxPoint(0, 50), wxDefaultSize,
 260                       wxDEFAULT_FRAME_STYLE |
 261                       wxNO_FULL_REPAINT_ON_RESIZE |
 262                       wxCLIP_CHILDREN |
 263                       wxTAB_TRAVERSAL)
 264 {
 265     // init everything
 266 #if USE_LOG
 267     m_lboxLog = (wxListBox *)NULL;
 268     m_logTarget = (wxLog *)NULL;
 269 #endif // USE_LOG
 270     m_book = (wxBookCtrl *)NULL;
 271     m_imaglist = (wxImageList *)NULL;
 272
 273 #if wxUSE_MENUS
 274     // create the menubar
 275     wxMenuBar *mbar = new wxMenuBar;
 276     wxMenu *menuWidget = new wxMenu;
 277     menuWidget->Append(Widgets_SetFgColour, _T("Set &foreground...\tCtrl-F"));
 278     menuWidget->Append(Widgets_SetBgColour, _T("Set &background...\tCtrl-B"));
 279     menuWidget->AppendSeparator();
 280     menuWidget->Append(wxID_EXIT, _T("&Quit\tCtrl-Q"));
 281     mbar->Append(menuWidget, _T("&Widget"));
 282     SetMenuBar(mbar);
 283 #endif // wxUSE_MENUS
 284
 285     // create controls
 286     m_panel = new wxPanel(this, wxID_ANY,
 287         wxDefaultPosition, wxDefaultSize, wxCLIP_CHILDREN);
 288
 289     wxSizer *sizerTop = new wxBoxSizer(wxVERTICAL);
 290
 291     // we have 2 panes: book which pages demonstrating the controls in the
 292     // upper one and the log window with some buttons in the lower
 293
 294     m_book = new wxBookCtrl(m_panel, wxID_ANY, wxDefaultPosition,
 295         wxDefaultSize, wxNO_FULL_REPAINT_ON_RESIZE|wxCLIP_CHILDREN|wxBC_DEFAULT);
 296     InitBook();
 297
 298 #ifndef __SMARTPHONE__
 299     // the lower one only has the log listbox and a button to clear it
 300 #if USE_LOG
 301     wxSizer *sizerDown = new wxStaticBoxSizer(
 302         new wxStaticBox( m_panel, wxID_ANY, _T("&Log window") ),
 303         wxVERTICAL);
 304
 305     m_lboxLog = new wxListBox(m_panel, wxID_ANY);
 306     sizerDown->Add(m_lboxLog, 1, wxGROW | wxALL, 5);
 307     sizerDown->SetMinSize(100, 150);
 308 #else
 309     wxSizer *sizerDown = new wxBoxSizer(wxVERTICAL);
 310 #endif // USE_LOG
 311
 312     wxBoxSizer *sizerBtns = new wxBoxSizer(wxHORIZONTAL);
 313     wxButton *btn;
 314 #if USE_LOG
 315     btn = new wxButton(m_panel, Widgets_ClearLog, _T("Clear &log"));
 316     sizerBtns->Add(btn);
 317     sizerBtns->Add(10, 0); // spacer
 318 #endif // USE_LOG
 319     btn = new wxButton(m_panel, Widgets_Quit, _T("E&xit"));
 320     sizerBtns->Add(btn);
 321     sizerDown->Add(sizerBtns, 0, wxALL | wxALIGN_RIGHT, 5);
 322
 323     // put everything together
 324     sizerTop->Add(m_book, 1, wxGROW | (wxALL & ~(wxTOP | wxBOTTOM)), 10);
 325     sizerTop->Add(0, 5, 0, wxGROW); // spacer in between
 326     sizerTop->Add(sizerDown, 0,  wxGROW | (wxALL & ~wxTOP), 10);
 327
 328 #else // !__SMARTPHONE__/__SMARTPHONE__
 329
 330     sizerTop->Add(m_book, 1, wxGROW | wxALL );
 331
 332 #endif // __SMARTPHONE__
 333
 334     m_panel->SetSizer(sizerTop);
 335
 336     sizerTop->Fit(this);
 337     sizerTop->SetSizeHints(this);
 338
 339 #if USE_LOG && !defined(__WXCOCOA__)
 340     // wxCocoa's listbox is too flakey to use for logging right now
 341     // now that everything is created we can redirect the log messages to the
 342     // listbox
 343     m_logTarget = new LboxLogger(m_lboxLog, wxLog::GetActiveTarget());
 344     wxLog::SetActiveTarget(m_logTarget);
 345 #endif
 346 }
 347
 348 void WidgetsFrame::InitBook()
 349 {
 350     m_imaglist = new wxImageList(32, 32);
 351
 352     ArrayWidgetsPage pages;
 353     wxArrayString labels;
 354
 355     // we need to first create all pages and only then add them to the book
 356     // as we need the image list first
 357     WidgetsPageInfo *info = WidgetsPage::ms_widgetPages;
 358     while ( info )
 359     {
 360         WidgetsPage *page = (*info->GetCtor())(m_book, m_imaglist);
 361         pages.Add(page);
 362
 363         labels.Add(info->GetLabel());
 364
 365         info = info->GetNext();
 366     }
 367
 368     m_book->SetImageList(m_imaglist);
 369
 370     // now do add them
 371     size_t count = pages.GetCount();
 372     for ( size_t n = 0; n < count; n++ )
 373     {
 374         m_book->AddPage(
 375                         pages[n],
 376                         labels[n],
 377                         false, // don't select
 378                         n // image id
 379                        );
 380     }
 381 }
 382
 383 WidgetsFrame::~WidgetsFrame()
 384 {
 385 #if USE_LOG
 386     delete m_logTarget;
 387 #endif // USE_LOG
 388     delete m_imaglist;
 389 }
 390
 391 // ----------------------------------------------------------------------------
 392 // WidgetsFrame event handlers
 393 // ----------------------------------------------------------------------------
 394
 395 void WidgetsFrame::OnExit(wxCommandEvent& WXUNUSED(event))
 396 {
 397     Close();
 398 }
 399
 400 #if USE_LOG
 401 void WidgetsFrame::OnButtonClearLog(wxCommandEvent& WXUNUSED(event))
 402 {
 403     m_lboxLog->Clear();
 404 }
 405 #endif // USE_LOG
 406
 407 #if wxUSE_MENUS
 408
 409 void WidgetsFrame::OnSetFgCol(wxCommandEvent& WXUNUSED(event))
 410 {
 411 #if wxUSE_COLOURDLG
 412     wxColour col = wxGetColourFromUser(this, m_colFg);
 413     if ( !col.Ok() )
 414         return;
 415
 416     m_colFg = col;
 417
 418     WidgetsPage *page = wxStaticCast(m_book->GetCurrentPage(), WidgetsPage);
 419     page->GetWidget()->SetForegroundColour(m_colFg);
 420     page->GetWidget()->Refresh();
 421 #else
 422     wxLogMessage(_T("None colour dialog available in current build."));
 423 #endif
 424 }
 425
 426 void WidgetsFrame::OnSetBgCol(wxCommandEvent& WXUNUSED(event))
 427 {
 428 #if wxUSE_COLOURDLG
 429     wxColour col = wxGetColourFromUser(this, m_colBg);
 430     if ( !col.Ok() )
 431         return;
 432
 433     m_colBg = col;
 434
 435     WidgetsPage *page = wxStaticCast(m_book->GetCurrentPage(), WidgetsPage);
 436     page->GetWidget()->SetBackgroundColour(m_colBg);
 437     page->GetWidget()->Refresh();
 438 #else
 439     wxLogMessage(_T("None colour dialog available in current build."));
 440 #endif
 441 }
 442
 443 #endif // wxUSE_MENUS
 444
 445 // ----------------------------------------------------------------------------
 446 // WidgetsPageInfo
 447 // ----------------------------------------------------------------------------
 448
 449 WidgetsPageInfo *WidgetsPage::ms_widgetPages = NULL;
 450
 451 WidgetsPageInfo::WidgetsPageInfo(Constructor ctor, const wxChar *label)
 452                : m_label(label)
 453 {
 454     m_ctor = ctor;
 455
 456     m_next = NULL;
 457
 458     // dummy sorting: add and immediately sort on list according to label
 459
 460     if(WidgetsPage::ms_widgetPages)
 461     {
 462         WidgetsPageInfo *node_prev = WidgetsPage::ms_widgetPages;
 463         if(wxStrcmp(label,node_prev->GetLabel().c_str())<0)
 464         {
 465             // add as first
 466             m_next = node_prev;
 467             WidgetsPage::ms_widgetPages = this;
 468         }
 469         else
 470         {
 471             WidgetsPageInfo *node_next;
 472             do
 473             {
 474                 node_next = node_prev->GetNext();
 475                 if(node_next)
 476                 {
 477                     // add if between two
 478                     if(wxStrcmp(label,node_next->GetLabel().c_str())<0)
 479                     {
 480                         node_prev->SetNext(this);
 481                         m_next = node_next;
 482                         // force to break loop
 483                         node_next = NULL;
 484                     }
 485                 }
 486                 else
 487                 {
 488                     // add as last
 489                     node_prev->SetNext(this);
 490                     m_next = node_next;
 491                 }
 492                 node_prev = node_next;
 493             }while(node_next);
 494         }
 495     }
 496     else
 497     {
 498         // add when first
 499
 500         WidgetsPage::ms_widgetPages = this;
 501
 502     }
 503
 504 }
 505
 506 // ----------------------------------------------------------------------------
 507 // WidgetsPage
 508 // ----------------------------------------------------------------------------
 509
 510 WidgetsPage::WidgetsPage(wxBookCtrl *book)
 511            : wxPanel(book, wxID_ANY,
 512                      wxDefaultPosition, wxDefaultSize,
 513                      wxNO_FULL_REPAINT_ON_RESIZE |
 514                      wxCLIP_CHILDREN |
 515                      wxTAB_TRAVERSAL)
 516 {
 517 }
 518
 519 wxSizer *WidgetsPage::CreateSizerWithText(wxControl *control,
 520                                           wxWindowID id,
 521                                           wxTextCtrl **ppText)
 522 {
 523     wxSizer *sizerRow = new wxBoxSizer(wxHORIZONTAL);
 524     wxTextCtrl *text = new wxTextCtrl(this, id, wxEmptyString,
 525         wxDefaultPosition, wxDefaultSize, wxTE_PROCESS_ENTER);
 526
 527     sizerRow->Add(control, 0, wxRIGHT | wxALIGN_CENTRE_VERTICAL, 5);
 528     sizerRow->Add(text, 1, wxLEFT | wxALIGN_CENTRE_VERTICAL, 5);
 529
 530     if ( ppText )
 531         *ppText = text;
 532
 533     return sizerRow;
 534 }
 535
 536 // create a sizer containing a label and a text ctrl
 537 wxSizer *WidgetsPage::CreateSizerWithTextAndLabel(const wxString& label,
 538                                                   wxWindowID id,
 539                                                   wxTextCtrl **ppText)
 540 {
 541     return CreateSizerWithText(new wxStaticText(this, wxID_ANY, label),
 542         id, ppText);
 543 }
 544
 545 // create a sizer containing a button and a text ctrl
 546 wxSizer *WidgetsPage::CreateSizerWithTextAndButton(wxWindowID idBtn,
 547                                                    const wxString& label,
 548                                                    wxWindowID id,
 549                                                    wxTextCtrl **ppText)
 550 {
 551     return CreateSizerWithText(new wxButton(this, idBtn, label), id, ppText);
 552 }
 553
 554 wxCheckBox *WidgetsPage::CreateCheckBoxAndAddToSizer(wxSizer *sizer,
 555                                                      const wxString& label,
 556                                                      wxWindowID id)
 557 {
 558     wxCheckBox *checkbox = new wxCheckBox(this, id, label);
 559     sizer->Add(checkbox, 0, wxLEFT | wxRIGHT, 5);
 560     sizer->Add(0, 2, 0, wxGROW); // spacer
 561
 562     return checkbox;
 563 }
 564