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/bmpbuttn.h"
  33     #include "wx/button.h"
  34     #include "wx/checkbox.h"
  35     #include "wx/radiobox.h"
  36     #include "wx/statbox.h"
  37     #include "wx/textctrl.h"
  38 #endif
  39
  40 #include "wx/artprov.h"
  41 #include "wx/sizer.h"
  42 #include "wx/dcmemory.h"
  43
  44 #include "widgets.h"
  45
  46 #include "icons/button.xpm"
  47
  48 // ----------------------------------------------------------------------------
  49 // constants
  50 // ----------------------------------------------------------------------------
  51
  52 // control ids
  53 enum
  54 {
  55     ButtonPage_Reset = wxID_HIGHEST,
  56     ButtonPage_ChangeLabel,
  57     ButtonPage_Button
  58 };
  59
  60 // radio boxes
  61 enum
  62 {
  63     ButtonHAlign_Left,
  64     ButtonHAlign_Centre,
  65     ButtonHAlign_Right
  66 };
  67
  68 enum
  69 {
  70     ButtonVAlign_Top,
  71     ButtonVAlign_Centre,
  72     ButtonVAlign_Bottom
  73 };
  74
  75 // ----------------------------------------------------------------------------
  76 // ButtonWidgetsPage
  77 // ----------------------------------------------------------------------------
  78
  79 class ButtonWidgetsPage : public WidgetsPage
  80 {
  81 public:
  82     ButtonWidgetsPage(WidgetsBookCtrl *book, wxImageList *imaglist);
  83     virtual ~ButtonWidgetsPage(){};
  84
  85     virtual wxControl *GetWidget() const { return m_button; }
  86     virtual void RecreateWidget() { CreateButton(); }
  87
  88 protected:
  89     // event handlers
  90     void OnCheckOrRadioBox(wxCommandEvent& event);
  91
  92     void OnButton(wxCommandEvent& event);
  93     void OnButtonReset(wxCommandEvent& event);
  94     void OnButtonChangeLabel(wxCommandEvent& event);
  95
  96     // reset the wxButton parameters
  97     void Reset();
  98
  99     // (re)create the wxButton
 100     void CreateButton();
 101
 102     // add m_button to m_sizerButton using current value of m_chkFit
 103     void AddButtonToSizer();
 104
 105     // helper function: create a bitmap for wxBitmapButton
 106     wxBitmap CreateBitmap(const wxString& label);
 107
 108
 109     // the controls
 110     // ------------
 111
 112     // the check/radio boxes for styles
 113     wxCheckBox *m_chkBitmap,
 114                *m_chkImage,
 115                *m_chkFit,
 116                *m_chkDefault;
 117
 118     // more checkboxes for wxBitmapButton only
 119     wxCheckBox *m_chkUseSelected,
 120                *m_chkUseFocused,
 121                *m_chkUseHover,
 122                *m_chkUseDisabled;
 123
 124     wxRadioBox *m_radioHAlign,
 125                *m_radioVAlign;
 126
 127     // the button itself and the sizer it is in
 128     wxButton *m_button;
 129     wxSizer *m_sizerButton;
 130
 131     // the text entries for command parameters
 132     wxTextCtrl *m_textLabel;
 133
 134 private:
 135     DECLARE_EVENT_TABLE()
 136     DECLARE_WIDGETS_PAGE(ButtonWidgetsPage)
 137 };
 138
 139 // ----------------------------------------------------------------------------
 140 // event tables
 141 // ----------------------------------------------------------------------------
 142
 143 BEGIN_EVENT_TABLE(ButtonWidgetsPage, WidgetsPage)
 144     EVT_BUTTON(ButtonPage_Button, ButtonWidgetsPage::OnButton)
 145
 146     EVT_BUTTON(ButtonPage_Reset, ButtonWidgetsPage::OnButtonReset)
 147     EVT_BUTTON(ButtonPage_ChangeLabel, ButtonWidgetsPage::OnButtonChangeLabel)
 148
 149     EVT_CHECKBOX(wxID_ANY, ButtonWidgetsPage::OnCheckOrRadioBox)
 150     EVT_RADIOBOX(wxID_ANY, ButtonWidgetsPage::OnCheckOrRadioBox)
 151 END_EVENT_TABLE()
 152
 153 // ============================================================================
 154 // implementation
 155 // ============================================================================
 156
 157 #if defined(__WXUNIVERSAL__)
 158     #define FAMILY_CTRLS UNIVERSAL_CTRLS
 159 #else
 160     #define FAMILY_CTRLS NATIVE_CTRLS
 161 #endif
 162
 163 IMPLEMENT_WIDGETS_PAGE(ButtonWidgetsPage, _T("Button"), FAMILY_CTRLS );
 164
 165 ButtonWidgetsPage::ButtonWidgetsPage(WidgetsBookCtrl *book,
 166                                      wxImageList *imaglist)
 167                   : WidgetsPage(book)
 168 {
 169     imaglist->Add(wxBitmap(button_xpm));
 170
 171     // init everything
 172     m_chkBitmap =
 173     m_chkImage =
 174     m_chkFit =
 175     m_chkDefault =
 176     m_chkUseSelected =
 177     m_chkUseFocused =
 178     m_chkUseHover =
 179     m_chkUseDisabled = (wxCheckBox *)NULL;
 180
 181     m_radioHAlign =
 182     m_radioVAlign = (wxRadioBox *)NULL;
 183
 184     m_textLabel = (wxTextCtrl *)NULL;
 185
 186     m_button = (wxButton *)NULL;
 187     m_sizerButton = (wxSizer *)NULL;
 188
 189     wxSizer *sizerTop = new wxBoxSizer(wxHORIZONTAL);
 190
 191     // left pane
 192     wxStaticBox *box = new wxStaticBox(this, wxID_ANY, _T("&Set style"));
 193
 194     wxSizer *sizerLeft = new wxStaticBoxSizer(box, wxVERTICAL);
 195
 196     m_chkBitmap = CreateCheckBoxAndAddToSizer(sizerLeft, _T("&Bitmap button"));
 197     m_chkImage = CreateCheckBoxAndAddToSizer(sizerLeft, _T("With &image"));
 198     m_chkFit = CreateCheckBoxAndAddToSizer(sizerLeft, _T("&Fit exactly"));
 199     m_chkDefault = CreateCheckBoxAndAddToSizer(sizerLeft, _T("&Default"));
 200
 201 #ifndef __WXUNIVERSAL__
 202     // only wxUniv currently supports buttons with images
 203     m_chkImage->Disable();
 204 #endif // !wxUniv
 205
 206     sizerLeft->AddSpacer(5);
 207
 208     wxSizer *sizerUseLabels =
 209         new wxStaticBoxSizer(wxVERTICAL, this, _T("&Use the following labels?"));
 210     m_chkUseSelected = CreateCheckBoxAndAddToSizer(sizerUseLabels, _T("&Pushed"));
 211     m_chkUseFocused = CreateCheckBoxAndAddToSizer(sizerUseLabels, _T("&Focused"));
 212     m_chkUseHover = CreateCheckBoxAndAddToSizer(sizerUseLabels, _T("&Hover"));
 213     m_chkUseDisabled = CreateCheckBoxAndAddToSizer(sizerUseLabels, _T("&Disabled"));
 214     sizerLeft->Add(sizerUseLabels, wxSizerFlags().Expand().Border());
 215
 216     sizerLeft->AddSpacer(15);
 217
 218     // should be in sync with enums Button[HV]Align!
 219     static const wxString halign[] =
 220     {
 221         _T("left"),
 222         _T("centre"),
 223         _T("right"),
 224     };
 225
 226     static const wxString valign[] =
 227     {
 228         _T("top"),
 229         _T("centre"),
 230         _T("bottom"),
 231     };
 232
 233     m_radioHAlign = new wxRadioBox(this, wxID_ANY, _T("&Horz alignment"),
 234                                    wxDefaultPosition, wxDefaultSize,
 235                                    WXSIZEOF(halign), halign);
 236     m_radioVAlign = new wxRadioBox(this, wxID_ANY, _T("&Vert alignment"),
 237                                    wxDefaultPosition, wxDefaultSize,
 238                                    WXSIZEOF(valign), valign);
 239
 240     sizerLeft->Add(m_radioHAlign, 0, wxGROW | wxALL, 5);
 241     sizerLeft->Add(m_radioVAlign, 0, wxGROW | wxALL, 5);
 242
 243     sizerLeft->Add(5, 5, 0, wxGROW | wxALL, 5); // spacer
 244
 245     wxButton *btn = new wxButton(this, ButtonPage_Reset, _T("&Reset"));
 246     sizerLeft->Add(btn, 0, wxALIGN_CENTRE_HORIZONTAL | wxALL, 15);
 247
 248     // middle pane
 249     wxStaticBox *box2 = new wxStaticBox(this, wxID_ANY, _T("&Operations"));
 250     wxSizer *sizerMiddle = new wxStaticBoxSizer(box2, wxVERTICAL);
 251
 252     wxSizer *sizerRow = CreateSizerWithTextAndButton(ButtonPage_ChangeLabel,
 253                                                      _T("Change label"),
 254                                                      wxID_ANY,
 255                                                      &m_textLabel);
 256     m_textLabel->SetValue(_T("&Press me!"));
 257
 258     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 259
 260     // right pane
 261     m_sizerButton = new wxBoxSizer(wxHORIZONTAL);
 262     m_sizerButton->SetMinSize(150, 0);
 263
 264     // the 3 panes panes compose the window
 265     sizerTop->Add(sizerLeft, 0, wxGROW | (wxALL & ~wxLEFT), 10);
 266     sizerTop->Add(sizerMiddle, 1, wxGROW | wxALL, 10);
 267     sizerTop->Add(m_sizerButton, 1, wxGROW | (wxALL & ~wxRIGHT), 10);
 268
 269     // do create the main control
 270     Reset();
 271     CreateButton();
 272
 273     SetSizer(sizerTop);
 274
 275     sizerTop->Fit(this);
 276 }
 277
 278 // ----------------------------------------------------------------------------
 279 // operations
 280 // ----------------------------------------------------------------------------
 281
 282 void ButtonWidgetsPage::Reset()
 283 {
 284     m_chkBitmap->SetValue(false);
 285     m_chkFit->SetValue(true);
 286     m_chkImage->SetValue(false);
 287     m_chkDefault->SetValue(false);
 288
 289     m_chkUseSelected->SetValue(true);
 290     m_chkUseFocused->SetValue(true);
 291     m_chkUseHover->SetValue(true);
 292     m_chkUseDisabled->SetValue(true);
 293
 294     m_radioHAlign->SetSelection(ButtonHAlign_Centre);
 295     m_radioVAlign->SetSelection(ButtonVAlign_Centre);
 296 }
 297
 298 void ButtonWidgetsPage::CreateButton()
 299 {
 300     wxString label;
 301     if ( m_button )
 302     {
 303         label = m_button->GetLabel();
 304
 305         size_t count = m_sizerButton->GetChildren().GetCount();
 306         for ( size_t n = 0; n < count; n++ )
 307         {
 308             m_sizerButton->Remove( 0 );
 309         }
 310
 311         delete m_button;
 312     }
 313
 314     if ( label.empty() )
 315     {
 316         // creating for the first time or recreating a button after bitmap
 317         // button
 318         label = m_textLabel->GetValue();
 319     }
 320
 321     int flags = ms_defaultFlags;
 322     switch ( m_radioHAlign->GetSelection() )
 323     {
 324         case ButtonHAlign_Left:
 325             flags |= wxBU_LEFT;
 326             break;
 327
 328         default:
 329             wxFAIL_MSG(_T("unexpected radiobox selection"));
 330             // fall through
 331
 332         case ButtonHAlign_Centre:
 333             break;
 334
 335         case ButtonHAlign_Right:
 336             flags |= wxBU_RIGHT;
 337             break;
 338     }
 339
 340     switch ( m_radioVAlign->GetSelection() )
 341     {
 342         case ButtonVAlign_Top:
 343             flags |= wxBU_TOP;
 344             break;
 345
 346         default:
 347             wxFAIL_MSG(_T("unexpected radiobox selection"));
 348             // fall through
 349
 350         case ButtonVAlign_Centre:
 351             // centre vertical alignment is the default (no style)
 352             break;
 353
 354         case ButtonVAlign_Bottom:
 355             flags |= wxBU_BOTTOM;
 356             break;
 357     }
 358
 359     const bool isBitmapButton = m_chkBitmap->GetValue();
 360     if ( isBitmapButton )
 361     {
 362         wxBitmapButton *bbtn = new wxBitmapButton(this, ButtonPage_Button,
 363                                                   CreateBitmap(_T("normal")));
 364         if ( m_chkUseSelected->GetValue() )
 365             bbtn->SetBitmapSelected(CreateBitmap(_T("pushed")));
 366         if ( m_chkUseFocused->GetValue() )
 367             bbtn->SetBitmapFocus(CreateBitmap(_T("focused")));
 368         if ( m_chkUseHover->GetValue() )
 369             bbtn->SetBitmapHover(CreateBitmap(_T("hover")));
 370         if ( m_chkUseDisabled->GetValue() )
 371             bbtn->SetBitmapDisabled(CreateBitmap(_T("disabled")));
 372         m_button = bbtn;
 373     }
 374     else // normal button
 375     {
 376         m_button = new wxButton(this, ButtonPage_Button, label,
 377                                 wxDefaultPosition, wxDefaultSize,
 378                                 flags);
 379     }
 380
 381     m_chkUseSelected->Enable(isBitmapButton);
 382     m_chkUseFocused->Enable(isBitmapButton);
 383     m_chkUseHover->Enable(isBitmapButton);
 384     m_chkUseDisabled->Enable(isBitmapButton);
 385
 386 #ifdef __WXUNIVERSAL__
 387     if ( m_chkImage->GetValue() )
 388     {
 389         m_button->SetImageLabel(wxArtProvider::GetIcon(wxART_INFORMATION));
 390     }
 391 #endif // wxUniv
 392
 393     if ( m_chkDefault->GetValue() )
 394     {
 395         m_button->SetDefault();
 396     }
 397
 398     AddButtonToSizer();
 399
 400     m_sizerButton->Layout();
 401 }
 402
 403 void ButtonWidgetsPage::AddButtonToSizer()
 404 {
 405     if ( m_chkFit->GetValue() )
 406     {
 407         m_sizerButton->AddStretchSpacer(1);
 408         m_sizerButton->Add(m_button, wxSizerFlags(0).Centre().Border());
 409         m_sizerButton->AddStretchSpacer(1);
 410     }
 411     else // take up the entire space
 412     {
 413         m_sizerButton->Add(m_button, wxSizerFlags(1).Expand().Border());
 414     }
 415 }
 416
 417 // ----------------------------------------------------------------------------
 418 // event handlers
 419 // ----------------------------------------------------------------------------
 420
 421 void ButtonWidgetsPage::OnButtonReset(wxCommandEvent& WXUNUSED(event))
 422 {
 423     Reset();
 424
 425     CreateButton();
 426 }
 427
 428 void ButtonWidgetsPage::OnCheckOrRadioBox(wxCommandEvent& WXUNUSED(event))
 429 {
 430     CreateButton();
 431 }
 432
 433 void ButtonWidgetsPage::OnButtonChangeLabel(wxCommandEvent& WXUNUSED(event))
 434 {
 435     m_button->SetLabel(m_textLabel->GetValue());
 436 }
 437
 438 void ButtonWidgetsPage::OnButton(wxCommandEvent& WXUNUSED(event))
 439 {
 440     wxLogMessage(_T("Test button clicked."));
 441 }
 442
 443 // ----------------------------------------------------------------------------
 444 // bitmap button stuff
 445 // ----------------------------------------------------------------------------
 446
 447 wxBitmap ButtonWidgetsPage::CreateBitmap(const wxString& label)
 448 {
 449     wxBitmap bmp(180, 70); // shouldn't hardcode but it's simpler like this
 450     wxMemoryDC dc;
 451     dc.SelectObject(bmp);
 452     dc.SetBackground(wxBrush(*wxWHITE));
 453     dc.Clear();
 454     dc.SetTextForeground(*wxBLUE);
 455     dc.DrawLabel(wxStripMenuCodes(m_textLabel->GetValue()) + _T("\n")
 456                     _T("(") + label + _T(" state)"),
 457                  wxArtProvider::GetBitmap(wxART_INFORMATION),
 458                  wxRect(10, 10, bmp.GetWidth() - 20, bmp.GetHeight() - 20),
 459                  wxALIGN_CENTRE);
 460
 461     return bmp;
 462 }
 463