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     virtual wxControl *GetWidget() const { return m_button; }
  84
  85 protected:
  86     // event handlers
  87     void OnCheckOrRadioBox(wxCommandEvent& event);
  88
  89     void OnButton(wxCommandEvent& event);
  90     void OnButtonReset(wxCommandEvent& event);
  91     void OnButtonChangeLabel(wxCommandEvent& event);
  92
  93     // reset the wxButton parameters
  94     void Reset();
  95
  96     // (re)create the wxButton
  97     void CreateButton();
  98
  99     // the controls
 100     // ------------
 101
 102     // the check/radio boxes for styles
 103     wxCheckBox *m_chkImage,
 104                *m_chkFit,
 105                *m_chkDefault;
 106
 107     wxRadioBox *m_radioHAlign,
 108                *m_radioVAlign;
 109
 110     // the button itself and the sizer it is in
 111     wxButton *m_button;
 112     wxSizer *m_sizerButton;
 113
 114     // the text entries for command parameters
 115     wxTextCtrl *m_textLabel;
 116
 117 private:
 118     DECLARE_EVENT_TABLE()
 119     DECLARE_WIDGETS_PAGE(ButtonWidgetsPage)
 120 };
 121
 122 // ----------------------------------------------------------------------------
 123 // event tables
 124 // ----------------------------------------------------------------------------
 125
 126 BEGIN_EVENT_TABLE(ButtonWidgetsPage, WidgetsPage)
 127     EVT_BUTTON(ButtonPage_Button, ButtonWidgetsPage::OnButton)
 128
 129     EVT_BUTTON(ButtonPage_Reset, ButtonWidgetsPage::OnButtonReset)
 130     EVT_BUTTON(ButtonPage_ChangeLabel, ButtonWidgetsPage::OnButtonChangeLabel)
 131
 132     EVT_CHECKBOX(wxID_ANY, ButtonWidgetsPage::OnCheckOrRadioBox)
 133     EVT_RADIOBOX(wxID_ANY, ButtonWidgetsPage::OnCheckOrRadioBox)
 134 END_EVENT_TABLE()
 135
 136 // ============================================================================
 137 // implementation
 138 // ============================================================================
 139
 140 IMPLEMENT_WIDGETS_PAGE(ButtonWidgetsPage, _T("Button"));
 141
 142 ButtonWidgetsPage::ButtonWidgetsPage(wxNotebook *notebook,
 143                                        wxImageList *imaglist)
 144                   : WidgetsPage(notebook)
 145 {
 146     imaglist->Add(wxBitmap(button_xpm));
 147
 148     // init everything
 149     m_chkImage =
 150     m_chkFit =
 151     m_chkDefault = (wxCheckBox *)NULL;
 152
 153     m_radioHAlign =
 154     m_radioVAlign = (wxRadioBox *)NULL;
 155
 156     m_textLabel = (wxTextCtrl *)NULL;
 157
 158     m_button = (wxButton *)NULL;
 159     m_sizerButton = (wxSizer *)NULL;
 160
 161     wxSizer *sizerTop = new wxBoxSizer(wxHORIZONTAL);
 162
 163     // left pane
 164     wxStaticBox *box = new wxStaticBox(this, wxID_ANY, _T("&Set style"));
 165
 166     wxSizer *sizerLeft = new wxStaticBoxSizer(box, wxVERTICAL);
 167
 168     m_chkImage = CreateCheckBoxAndAddToSizer(sizerLeft, _T("With &image"));
 169     m_chkFit = CreateCheckBoxAndAddToSizer(sizerLeft, _T("&Fit exactly"));
 170     m_chkDefault = CreateCheckBoxAndAddToSizer(sizerLeft, _T("&Default"));
 171
 172 #ifndef __WXUNIVERSAL__
 173     // only wxUniv currently supports buttons with images
 174     m_chkImage->Disable();
 175 #endif // !wxUniv
 176
 177     sizerLeft->Add(5, 5, 0, wxGROW | wxALL, 5); // spacer
 178
 179     // should be in sync with enums Button[HV]Align!
 180     static const wxString halign[] =
 181     {
 182         _T("left"),
 183         _T("centre"),
 184         _T("right"),
 185     };
 186
 187     static const wxString valign[] =
 188     {
 189         _T("top"),
 190         _T("centre"),
 191         _T("bottom"),
 192     };
 193
 194     m_radioHAlign = new wxRadioBox(this, wxID_ANY, _T("&Horz alignment"),
 195                                    wxDefaultPosition, wxDefaultSize,
 196                                    WXSIZEOF(halign), halign);
 197     m_radioVAlign = new wxRadioBox(this, wxID_ANY, _T("&Vert alignment"),
 198                                    wxDefaultPosition, wxDefaultSize,
 199                                    WXSIZEOF(valign), valign);
 200
 201     sizerLeft->Add(m_radioHAlign, 0, wxGROW | wxALL, 5);
 202     sizerLeft->Add(m_radioVAlign, 0, wxGROW | wxALL, 5);
 203
 204     sizerLeft->Add(5, 5, 0, wxGROW | wxALL, 5); // spacer
 205
 206     wxButton *btn = new wxButton(this, ButtonPage_Reset, _T("&Reset"));
 207     sizerLeft->Add(btn, 0, wxALIGN_CENTRE_HORIZONTAL | wxALL, 15);
 208
 209     // middle pane
 210     wxStaticBox *box2 = new wxStaticBox(this, wxID_ANY, _T("&Operations"));
 211     wxSizer *sizerMiddle = new wxStaticBoxSizer(box2, wxVERTICAL);
 212
 213     wxSizer *sizerRow = CreateSizerWithTextAndButton(ButtonPage_ChangeLabel,
 214                                                      _T("Change label"),
 215                                                      wxID_ANY,
 216                                                      &m_textLabel);
 217
 218     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 219
 220     // right pane
 221     wxSizer *sizerRight = new wxBoxSizer(wxHORIZONTAL);
 222     m_button = new wxButton(this, ButtonPage_Button, _T("&Press me!"));
 223     sizerRight->Add(0, 0, 1, wxCENTRE);
 224     sizerRight->Add(m_button, 1, wxCENTRE);
 225     sizerRight->Add(0, 0, 1, wxCENTRE);
 226     sizerRight->SetMinSize(150, 0);
 227     m_sizerButton = sizerRight; // save it to modify it later
 228
 229     // the 3 panes panes compose the window
 230     sizerTop->Add(sizerLeft, 0, wxGROW | (wxALL & ~wxLEFT), 10);
 231     sizerTop->Add(sizerMiddle, 1, wxGROW | wxALL, 10);
 232     sizerTop->Add(sizerRight, 1, wxGROW | (wxALL & ~wxRIGHT), 10);
 233
 234     // final initializations
 235     Reset();
 236
 237     SetSizer(sizerTop);
 238
 239     sizerTop->Fit(this);
 240 }
 241
 242 // ----------------------------------------------------------------------------
 243 // operations
 244 // ----------------------------------------------------------------------------
 245
 246 void ButtonWidgetsPage::Reset()
 247 {
 248     m_chkFit->SetValue(true);
 249     m_chkImage->SetValue(false);
 250     m_chkDefault->SetValue(false);
 251
 252     m_radioHAlign->SetSelection(ButtonHAlign_Centre);
 253     m_radioVAlign->SetSelection(ButtonVAlign_Centre);
 254 }
 255
 256 void ButtonWidgetsPage::CreateButton()
 257 {
 258     wxString label;
 259     if ( m_button )
 260     {
 261         label = m_button->GetLabel();
 262
 263         size_t count = m_sizerButton->GetChildren().GetCount();
 264         for ( size_t n = 0; n < count; n++ )
 265         {
 266             m_sizerButton->Remove( 0 );
 267         }
 268
 269         delete m_button;
 270     }
 271     else
 272     {
 273         label = _T("&Press me!");
 274     }
 275
 276     int flags = 0;
 277     switch ( m_radioHAlign->GetSelection() )
 278     {
 279         case ButtonHAlign_Left:
 280             flags |= wxBU_LEFT;
 281             break;
 282
 283         default:
 284             wxFAIL_MSG(_T("unexpected radiobox selection"));
 285             // fall through
 286
 287         case ButtonHAlign_Centre:
 288             break;
 289
 290         case ButtonHAlign_Right:
 291             flags |= wxBU_RIGHT;
 292             break;
 293     }
 294
 295     switch ( m_radioVAlign->GetSelection() )
 296     {
 297         case ButtonVAlign_Top:
 298             flags |= wxBU_TOP;
 299             break;
 300
 301         default:
 302             wxFAIL_MSG(_T("unexpected radiobox selection"));
 303             // fall through
 304
 305         case ButtonVAlign_Centre:
 306             flags |= wxALIGN_CENTRE_VERTICAL;
 307             break;
 308
 309         case ButtonVAlign_Bottom:
 310             flags |= wxBU_BOTTOM;
 311             break;
 312     }
 313
 314     m_button = new wxButton(this, ButtonPage_Button, label,
 315                             wxDefaultPosition, wxDefaultSize,
 316                             flags);
 317
 318 #ifdef __WXUNIVERSAL__
 319     if ( m_chkImage->GetValue() )
 320     {
 321         m_button->SetImageLabel(wxArtProvider::GetIcon(wxART_INFORMATION));
 322     }
 323 #endif // wxUniv
 324
 325     if ( m_chkDefault->GetValue() )
 326     {
 327         m_button->SetDefault();
 328     }
 329
 330     if ( m_chkFit->GetValue() )
 331     {
 332         m_sizerButton->Add(0, 0, 1, wxCENTRE);
 333         m_sizerButton->Add(m_button, 1, wxCENTRE);
 334         m_sizerButton->Add(0, 0, 1, wxCENTRE);
 335     }
 336     else
 337     {
 338         m_sizerButton->Add(m_button, 1, wxGROW | wxALL, 5);
 339     }
 340
 341     m_sizerButton->Layout();
 342 }
 343
 344 // ----------------------------------------------------------------------------
 345 // event handlers
 346 // ----------------------------------------------------------------------------
 347
 348 void ButtonWidgetsPage::OnButtonReset(wxCommandEvent& WXUNUSED(event))
 349 {
 350     Reset();
 351
 352     CreateButton();
 353 }
 354
 355 void ButtonWidgetsPage::OnCheckOrRadioBox(wxCommandEvent& WXUNUSED(event))
 356 {
 357     CreateButton();
 358 }
 359
 360 void ButtonWidgetsPage::OnButtonChangeLabel(wxCommandEvent& WXUNUSED(event))
 361 {
 362     m_button->SetLabel(m_textLabel->GetValue());
 363 }
 364
 365 void ButtonWidgetsPage::OnButton(wxCommandEvent& WXUNUSED(event))
 366 {
 367     wxLogMessage(_T("Test button clicked."));
 368 }
 369