samples/widgets/button.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Program:     wxWidgets Widgets Sample
   3 // Name:        button.cpp
   4 // Purpose:     Part of the widgets sample showing wxButton
   5 // Author:      Vadim Zeitlin
   6 // Created:     10.04.01
   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
  32     #include "wx/button.h"
  33     #include "wx/checkbox.h"
  34     #include "wx/radiobox.h"
  35     #include "wx/statbox.h"
  36     #include "wx/textctrl.h"
  37 #endif
  38
  39 #include "wx/artprov.h"
  40 #include "wx/sizer.h"
  41
  42 #include "widgets.h"
  43
  44 #include "icons/button.xpm"
  45
  46 // ----------------------------------------------------------------------------
  47 // constants
  48 // ----------------------------------------------------------------------------
  49
  50 // control ids
  51 enum
  52 {
  53     ButtonPage_Reset = 100,
  54     ButtonPage_ChangeLabel,
  55     ButtonPage_Button
  56 };
  57
  58 // radio boxes
  59 enum
  60 {
  61     ButtonHAlign_Left,
  62     ButtonHAlign_Centre,
  63     ButtonHAlign_Right
  64 };
  65
  66 enum
  67 {
  68     ButtonVAlign_Top,
  69     ButtonVAlign_Centre,
  70     ButtonVAlign_Bottom
  71 };
  72
  73 // ----------------------------------------------------------------------------
  74 // ButtonWidgetsPage
  75 // ----------------------------------------------------------------------------
  76
  77 class ButtonWidgetsPage : public WidgetsPage
  78 {
  79 public:
  80     ButtonWidgetsPage(wxNotebook *notebook, wxImageList *imaglist);
  81     virtual ~ButtonWidgetsPage(){};
  82
  83 protected:
  84     // event handlers
  85     void OnCheckOrRadioBox(wxCommandEvent& event);
  86
  87     void OnButton(wxCommandEvent& event);
  88     void OnButtonReset(wxCommandEvent& event);
  89     void OnButtonChangeLabel(wxCommandEvent& event);
  90
  91     // reset the wxButton parameters
  92     void Reset();
  93
  94     // (re)create the wxButton
  95     void CreateButton();
  96
  97     // the controls
  98     // ------------
  99
 100     // the check/radio boxes for styles
 101     wxCheckBox *m_chkImage,
 102                *m_chkFit,
 103                *m_chkDefault;
 104
 105     wxRadioBox *m_radioHAlign,
 106                *m_radioVAlign;
 107
 108     // the button itself and the sizer it is in
 109     wxButton *m_button;
 110     wxSizer *m_sizerButton;
 111
 112     // the text entries for command parameters
 113     wxTextCtrl *m_textLabel;
 114
 115 private:
 116     DECLARE_EVENT_TABLE()
 117     DECLARE_WIDGETS_PAGE(ButtonWidgetsPage)
 118 };
 119
 120 // ----------------------------------------------------------------------------
 121 // event tables
 122 // ----------------------------------------------------------------------------
 123
 124 BEGIN_EVENT_TABLE(ButtonWidgetsPage, WidgetsPage)
 125     EVT_BUTTON(ButtonPage_Button, ButtonWidgetsPage::OnButton)
 126
 127     EVT_BUTTON(ButtonPage_Reset, ButtonWidgetsPage::OnButtonReset)
 128     EVT_BUTTON(ButtonPage_ChangeLabel, ButtonWidgetsPage::OnButtonChangeLabel)
 129
 130     EVT_CHECKBOX(wxID_ANY, ButtonWidgetsPage::OnCheckOrRadioBox)
 131     EVT_RADIOBOX(wxID_ANY, ButtonWidgetsPage::OnCheckOrRadioBox)
 132 END_EVENT_TABLE()
 133
 134 // ============================================================================
 135 // implementation
 136 // ============================================================================
 137
 138 IMPLEMENT_WIDGETS_PAGE(ButtonWidgetsPage, _T("Button"));
 139
 140 ButtonWidgetsPage::ButtonWidgetsPage(wxNotebook *notebook,
 141                                        wxImageList *imaglist)
 142                   : WidgetsPage(notebook)
 143 {
 144     imaglist->Add(wxBitmap(button_xpm));
 145
 146     // init everything
 147     m_chkImage =
 148     m_chkFit =
 149     m_chkDefault = (wxCheckBox *)NULL;
 150
 151     m_radioHAlign =
 152     m_radioVAlign = (wxRadioBox *)NULL;
 153
 154     m_textLabel = (wxTextCtrl *)NULL;
 155
 156     m_button = (wxButton *)NULL;
 157     m_sizerButton = (wxSizer *)NULL;
 158
 159     wxSizer *sizerTop = new wxBoxSizer(wxHORIZONTAL);
 160
 161     // left pane
 162     wxStaticBox *box = new wxStaticBox(this, wxID_ANY, _T("&Set style"));
 163
 164     wxSizer *sizerLeft = new wxStaticBoxSizer(box, wxVERTICAL);
 165
 166     m_chkImage = CreateCheckBoxAndAddToSizer(sizerLeft, _T("With &image"));
 167     m_chkFit = CreateCheckBoxAndAddToSizer(sizerLeft, _T("&Fit exactly"));
 168     m_chkDefault = CreateCheckBoxAndAddToSizer(sizerLeft, _T("&Default"));
 169
 170 #ifndef __WXUNIVERSAL__
 171     // only wxUniv currently supports buttons with images
 172     m_chkImage->Disable();
 173 #endif // !wxUniv
 174
 175     sizerLeft->Add(5, 5, 0, wxGROW | wxALL, 5); // spacer
 176
 177     // should be in sync with enums Button[HV]Align!
 178     static const wxString halign[] =
 179     {
 180         _T("left"),
 181         _T("centre"),
 182         _T("right"),
 183     };
 184
 185     static const wxString valign[] =
 186     {
 187         _T("top"),
 188         _T("centre"),
 189         _T("bottom"),
 190     };
 191
 192     m_radioHAlign = new wxRadioBox(this, wxID_ANY, _T("&Horz alignment"),
 193                                    wxDefaultPosition, wxDefaultSize,
 194                                    WXSIZEOF(halign), halign);
 195     m_radioVAlign = new wxRadioBox(this, wxID_ANY, _T("&Vert alignment"),
 196                                    wxDefaultPosition, wxDefaultSize,
 197                                    WXSIZEOF(valign), valign);
 198
 199     sizerLeft->Add(m_radioHAlign, 0, wxGROW | wxALL, 5);
 200     sizerLeft->Add(m_radioVAlign, 0, wxGROW | wxALL, 5);
 201
 202     sizerLeft->Add(5, 5, 0, wxGROW | wxALL, 5); // spacer
 203
 204     wxButton *btn = new wxButton(this, ButtonPage_Reset, _T("&Reset"));
 205     sizerLeft->Add(btn, 0, wxALIGN_CENTRE_HORIZONTAL | wxALL, 15);
 206
 207     // middle pane
 208     wxStaticBox *box2 = new wxStaticBox(this, wxID_ANY, _T("&Operations"));
 209     wxSizer *sizerMiddle = new wxStaticBoxSizer(box2, wxVERTICAL);
 210
 211     wxSizer *sizerRow = CreateSizerWithTextAndButton(ButtonPage_ChangeLabel,
 212                                                      _T("Change label"),
 213                                                      wxID_ANY,
 214                                                      &m_textLabel);
 215
 216     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 217
 218     // right pane
 219     wxSizer *sizerRight = new wxBoxSizer(wxHORIZONTAL);
 220     m_button = new wxButton(this, ButtonPage_Button, _T("&Press me!"));
 221     sizerRight->Add(0, 0, 1, wxCENTRE);
 222     sizerRight->Add(m_button, 1, wxCENTRE);
 223     sizerRight->Add(0, 0, 1, wxCENTRE);
 224     sizerRight->SetMinSize(150, 0);
 225     m_sizerButton = sizerRight; // save it to modify it later
 226
 227     // the 3 panes panes compose the window
 228     sizerTop->Add(sizerLeft, 0, wxGROW | (wxALL & ~wxLEFT), 10);
 229     sizerTop->Add(sizerMiddle, 1, wxGROW | wxALL, 10);
 230     sizerTop->Add(sizerRight, 1, wxGROW | (wxALL & ~wxRIGHT), 10);
 231
 232     // final initializations
 233     Reset();
 234
 235     SetSizer(sizerTop);
 236
 237     sizerTop->Fit(this);
 238 }
 239
 240 // ----------------------------------------------------------------------------
 241 // operations
 242 // ----------------------------------------------------------------------------
 243
 244 void ButtonWidgetsPage::Reset()
 245 {
 246     m_chkFit->SetValue(true);
 247     m_chkImage->SetValue(false);
 248     m_chkDefault->SetValue(false);
 249
 250     m_radioHAlign->SetSelection(ButtonHAlign_Centre);
 251     m_radioVAlign->SetSelection(ButtonVAlign_Centre);
 252 }
 253
 254 void ButtonWidgetsPage::CreateButton()
 255 {
 256     wxString label;
 257     if ( m_button )
 258     {
 259         label = m_button->GetLabel();
 260
 261         size_t count = m_sizerButton->GetChildren().GetCount();
 262         for ( size_t n = 0; n < count; n++ )
 263         {
 264             m_sizerButton->Remove( 0 );
 265         }
 266
 267         delete m_button;
 268     }
 269     else
 270     {
 271         label = _T("&Press me!");
 272     }
 273
 274     int flags = 0;
 275     switch ( m_radioHAlign->GetSelection() )
 276     {
 277         case ButtonHAlign_Left:
 278             flags |= wxBU_LEFT;
 279             break;
 280
 281         default:
 282             wxFAIL_MSG(_T("unexpected radiobox selection"));
 283             // fall through
 284
 285         case ButtonHAlign_Centre:
 286             break;
 287
 288         case ButtonHAlign_Right:
 289             flags |= wxBU_RIGHT;
 290             break;
 291     }
 292
 293     switch ( m_radioVAlign->GetSelection() )
 294     {
 295         case ButtonVAlign_Top:
 296             flags |= wxBU_TOP;
 297             break;
 298
 299         default:
 300             wxFAIL_MSG(_T("unexpected radiobox selection"));
 301             // fall through
 302
 303         case ButtonVAlign_Centre:
 304             flags |= wxALIGN_CENTRE_VERTICAL;
 305             break;
 306
 307         case ButtonVAlign_Bottom:
 308             flags |= wxBU_BOTTOM;
 309             break;
 310     }
 311
 312     m_button = new wxButton(this, ButtonPage_Button, label,
 313                             wxDefaultPosition, wxDefaultSize,
 314                             flags);
 315
 316 #ifdef __WXUNIVERSAL__
 317     if ( m_chkImage->GetValue() )
 318     {
 319         m_button->SetImageLabel(wxArtProvider::GetIcon(wxART_INFORMATION));
 320     }
 321 #endif // wxUniv
 322
 323     if ( m_chkDefault->GetValue() )
 324     {
 325         m_button->SetDefault();
 326     }
 327
 328     if ( m_chkFit->GetValue() )
 329     {
 330         m_sizerButton->Add(0, 0, 1, wxCENTRE);
 331         m_sizerButton->Add(m_button, 1, wxCENTRE);
 332         m_sizerButton->Add(0, 0, 1, wxCENTRE);
 333     }
 334     else
 335     {
 336         m_sizerButton->Add(m_button, 1, wxGROW | wxALL, 5);
 337     }
 338
 339     m_sizerButton->Layout();
 340 }
 341
 342 // ----------------------------------------------------------------------------
 343 // event handlers
 344 // ----------------------------------------------------------------------------
 345
 346 void ButtonWidgetsPage::OnButtonReset(wxCommandEvent& WXUNUSED(event))
 347 {
 348     Reset();
 349
 350     CreateButton();
 351 }
 352
 353 void ButtonWidgetsPage::OnCheckOrRadioBox(wxCommandEvent& WXUNUSED(event))
 354 {
 355     CreateButton();
 356 }
 357
 358 void ButtonWidgetsPage::OnButtonChangeLabel(wxCommandEvent& WXUNUSED(event))
 359 {
 360     m_button->SetLabel(m_textLabel->GetValue());
 361 }
 362
 363 void ButtonWidgetsPage::OnButton(wxCommandEvent& WXUNUSED(event))
 364 {
 365     wxLogMessage(_T("Test button clicked."));
 366 }
 367