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/notebook.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 wxUSE_LOG
  89     void OnButtonClearLog(wxCommandEvent& event);
  90 #endif // wxUSE_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 notebook: add all pages to it
  98     void InitNotebook();
  99
 100 private:
 101     // the panel containing everything
 102     wxPanel *m_panel;
 103
 104 #if wxUSE_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 // wxUSE_LOG
 111
 112     // the notebook containing the test pages
 113     wxNotebook *m_notebook;
 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 wxUSE_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 // wxUSE_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 wxUSE_LOG
 202     EVT_BUTTON(Widgets_ClearLog, WidgetsFrame::OnButtonClearLog)
 203 #endif // wxUSE_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 wxUSE_LOG
 267     m_lboxLog = (wxListBox *)NULL;
 268     m_logTarget = (wxLog *)NULL;
 269 #endif // wxUSE_LOG
 270     m_notebook = (wxNotebook *)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: notebook which pages demonstrating the controls in the
 292     // upper one and the log window with some buttons in the lower
 293
 294     m_notebook = new wxNotebook(m_panel, wxID_ANY, wxDefaultPosition,
 295         wxDefaultSize, wxNO_FULL_REPAINT_ON_RESIZE|wxCLIP_CHILDREN);
 296     InitNotebook();
 297
 298     // the lower one only has the log listbox and a button to clear it
 299 #if wxUSE_LOG
 300     wxSizer *sizerDown = new wxStaticBoxSizer(
 301         new wxStaticBox( m_panel, wxID_ANY, _T("&Log window") ),
 302         wxVERTICAL);
 303
 304     m_lboxLog = new wxListBox(m_panel, wxID_ANY);
 305     sizerDown->Add(m_lboxLog, 1, wxGROW | wxALL, 5);
 306     sizerDown->SetMinSize(100, 150);
 307 #else
 308     wxSizer *sizerDown = new wxBoxSizer(wxVERTICAL);
 309 #endif // wxUSE_LOG
 310
 311     wxBoxSizer *sizerBtns = new wxBoxSizer(wxHORIZONTAL);
 312     wxButton *btn;
 313 #if wxUSE_LOG
 314     btn = new wxButton(m_panel, Widgets_ClearLog, _T("Clear &log"));
 315     sizerBtns->Add(btn);
 316     sizerBtns->Add(10, 0); // spacer
 317 #endif // wxUSE_LOG
 318     btn = new wxButton(m_panel, Widgets_Quit, _T("E&xit"));
 319     sizerBtns->Add(btn);
 320     sizerDown->Add(sizerBtns, 0, wxALL | wxALIGN_RIGHT, 5);
 321
 322     // put everything together
 323     sizerTop->Add(m_notebook, 1, wxGROW | (wxALL & ~(wxTOP | wxBOTTOM)), 10);
 324     sizerTop->Add(0, 5, 0, wxGROW); // spacer in between
 325     sizerTop->Add(sizerDown, 0,  wxGROW | (wxALL & ~wxTOP), 10);
 326
 327     m_panel->SetSizer(sizerTop);
 328
 329     sizerTop->Fit(this);
 330     sizerTop->SetSizeHints(this);
 331
 332 #if wxUSE_LOG && !defined(__WXCOCOA__)
 333     // wxCocoa's listbox is too flakey to use for logging right now
 334     // now that everything is created we can redirect the log messages to the
 335     // listbox
 336     m_logTarget = new LboxLogger(m_lboxLog, wxLog::GetActiveTarget());
 337     wxLog::SetActiveTarget(m_logTarget);
 338 #endif
 339 }
 340
 341 void WidgetsFrame::InitNotebook()
 342 {
 343     m_imaglist = new wxImageList(32, 32);
 344
 345     ArrayWidgetsPage pages;
 346     wxArrayString labels;
 347
 348     // we need to first create all pages and only then add them to the notebook
 349     // as we need the image list first
 350     WidgetsPageInfo *info = WidgetsPage::ms_widgetPages;
 351     while ( info )
 352     {
 353         WidgetsPage *page = (*info->GetCtor())(m_notebook, m_imaglist);
 354         pages.Add(page);
 355
 356         labels.Add(info->GetLabel());
 357
 358         info = info->GetNext();
 359     }
 360
 361     m_notebook->SetImageList(m_imaglist);
 362
 363     // now do add them
 364     size_t count = pages.GetCount();
 365     for ( size_t n = 0; n < count; n++ )
 366     {
 367         m_notebook->AddPage(
 368                             pages[n],
 369                             labels[n],
 370                             false, // don't select
 371                             n // image id
 372                            );
 373     }
 374 }
 375
 376 WidgetsFrame::~WidgetsFrame()
 377 {
 378 #if wxUSE_LOG
 379     delete m_logTarget;
 380 #endif // wxUSE_LOG
 381     delete m_imaglist;
 382 }
 383
 384 // ----------------------------------------------------------------------------
 385 // WidgetsFrame event handlers
 386 // ----------------------------------------------------------------------------
 387
 388 void WidgetsFrame::OnExit(wxCommandEvent& WXUNUSED(event))
 389 {
 390     Close();
 391 }
 392
 393 #if wxUSE_LOG
 394 void WidgetsFrame::OnButtonClearLog(wxCommandEvent& WXUNUSED(event))
 395 {
 396     m_lboxLog->Clear();
 397 }
 398 #endif // wxUSE_LOG
 399
 400 #if wxUSE_MENUS
 401
 402 void WidgetsFrame::OnSetFgCol(wxCommandEvent& WXUNUSED(event))
 403 {
 404     wxColour col = wxGetColourFromUser(this, m_colFg);
 405     if ( !col.Ok() )
 406         return;
 407
 408     m_colFg = col;
 409
 410     WidgetsPage *page = wxStaticCast(m_notebook->GetCurrentPage(), WidgetsPage);
 411     page->GetWidget()->SetForegroundColour(m_colFg);
 412     page->GetWidget()->Refresh();
 413 }
 414
 415 void WidgetsFrame::OnSetBgCol(wxCommandEvent& WXUNUSED(event))
 416 {
 417     wxColour col = wxGetColourFromUser(this, m_colBg);
 418     if ( !col.Ok() )
 419         return;
 420
 421     m_colBg = col;
 422
 423     WidgetsPage *page = wxStaticCast(m_notebook->GetCurrentPage(), WidgetsPage);
 424     page->GetWidget()->SetBackgroundColour(m_colBg);
 425     page->GetWidget()->Refresh();
 426 }
 427
 428 #endif // wxUSE_MENUS
 429
 430 // ----------------------------------------------------------------------------
 431 // WidgetsPageInfo
 432 // ----------------------------------------------------------------------------
 433
 434 WidgetsPageInfo *WidgetsPage::ms_widgetPages = NULL;
 435
 436 WidgetsPageInfo::WidgetsPageInfo(Constructor ctor, const wxChar *label)
 437                : m_label(label)
 438 {
 439     m_ctor = ctor;
 440
 441     m_next = NULL;
 442
 443     // dummy sorting: add and immediately sort on list according to label
 444
 445     if(WidgetsPage::ms_widgetPages)
 446     {
 447         WidgetsPageInfo *node_prev = WidgetsPage::ms_widgetPages;
 448         if(wxStrcmp(label,node_prev->GetLabel().c_str())<0)
 449         {
 450             // add as first
 451             m_next = node_prev;
 452             WidgetsPage::ms_widgetPages = this;
 453         }
 454         else
 455         {
 456             WidgetsPageInfo *node_next;
 457             do
 458             {
 459                 node_next = node_prev->GetNext();
 460                 if(node_next)
 461                 {
 462                     // add if between two
 463                     if(wxStrcmp(label,node_next->GetLabel().c_str())<0)
 464                     {
 465                         node_prev->SetNext(this);
 466                         m_next = node_next;
 467                         // force to break loop
 468                         node_next = NULL;
 469                     }
 470                 }
 471                 else
 472                 {
 473                     // add as last
 474                     node_prev->SetNext(this);
 475                     m_next = node_next;
 476                 }
 477                 node_prev = node_next;
 478             }while(node_next);
 479         }
 480     }
 481     else
 482     {
 483         // add when first
 484
 485         WidgetsPage::ms_widgetPages = this;
 486
 487     }
 488
 489 }
 490
 491 // ----------------------------------------------------------------------------
 492 // WidgetsPage
 493 // ----------------------------------------------------------------------------
 494
 495 WidgetsPage::WidgetsPage(wxNotebook *notebook)
 496            : wxPanel(notebook, wxID_ANY,
 497                      wxDefaultPosition, wxDefaultSize,
 498                      wxNO_FULL_REPAINT_ON_RESIZE |
 499                      wxCLIP_CHILDREN |
 500                      wxTAB_TRAVERSAL)
 501 {
 502 }
 503
 504 wxSizer *WidgetsPage::CreateSizerWithText(wxControl *control,
 505                                           wxWindowID id,
 506                                           wxTextCtrl **ppText)
 507 {
 508     wxSizer *sizerRow = new wxBoxSizer(wxHORIZONTAL);
 509     wxTextCtrl *text = new wxTextCtrl(this, id, wxEmptyString,
 510         wxDefaultPosition, wxDefaultSize, wxTE_PROCESS_ENTER);
 511
 512     sizerRow->Add(control, 0, wxRIGHT | wxALIGN_CENTRE_VERTICAL, 5);
 513     sizerRow->Add(text, 1, wxLEFT | wxALIGN_CENTRE_VERTICAL, 5);
 514
 515     if ( ppText )
 516         *ppText = text;
 517
 518     return sizerRow;
 519 }
 520
 521 // create a sizer containing a label and a text ctrl
 522 wxSizer *WidgetsPage::CreateSizerWithTextAndLabel(const wxString& label,
 523                                                   wxWindowID id,
 524                                                   wxTextCtrl **ppText)
 525 {
 526     return CreateSizerWithText(new wxStaticText(this, wxID_ANY, label),
 527         id, ppText);
 528 }
 529
 530 // create a sizer containing a button and a text ctrl
 531 wxSizer *WidgetsPage::CreateSizerWithTextAndButton(wxWindowID idBtn,
 532                                                    const wxString& label,
 533                                                    wxWindowID id,
 534                                                    wxTextCtrl **ppText)
 535 {
 536     return CreateSizerWithText(new wxButton(this, idBtn, label), id, ppText);
 537 }
 538
 539 wxCheckBox *WidgetsPage::CreateCheckBoxAndAddToSizer(wxSizer *sizer,
 540                                                      const wxString& label,
 541                                                      wxWindowID id)
 542 {
 543     wxCheckBox *checkbox = new wxCheckBox(this, id, label);
 544     sizer->Add(checkbox, 0, wxLEFT | wxRIGHT, 5);
 545     sizer->Add(0, 2, 0, wxGROW); // spacer
 546
 547     return checkbox;
 548 }
 549