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, imaglist, button_xpm)
 168 {
 169     // init everything
 170     m_chkBitmap =
 171     m_chkImage =
 172     m_chkFit =
 173     m_chkDefault =
 174     m_chkUseSelected =
 175     m_chkUseFocused =
 176     m_chkUseHover =
 177     m_chkUseDisabled = (wxCheckBox *)NULL;
 178
 179     m_radioHAlign =
 180     m_radioVAlign = (wxRadioBox *)NULL;
 181
 182     m_textLabel = (wxTextCtrl *)NULL;
 183
 184     m_button = (wxButton *)NULL;
 185     m_sizerButton = (wxSizer *)NULL;
 186
 187     wxSizer *sizerTop = new wxBoxSizer(wxHORIZONTAL);
 188
 189     // left pane
 190     wxStaticBox *box = new wxStaticBox(this, wxID_ANY, _T("&Set style"));
 191
 192     wxSizer *sizerLeft = new wxStaticBoxSizer(box, wxVERTICAL);
 193
 194     m_chkBitmap = CreateCheckBoxAndAddToSizer(sizerLeft, _T("&Bitmap button"));
 195     m_chkImage = CreateCheckBoxAndAddToSizer(sizerLeft, _T("With &image"));
 196     m_chkFit = CreateCheckBoxAndAddToSizer(sizerLeft, _T("&Fit exactly"));
 197     m_chkDefault = CreateCheckBoxAndAddToSizer(sizerLeft, _T("&Default"));
 198
 199 #ifndef __WXUNIVERSAL__
 200     // only wxUniv currently supports buttons with images
 201     m_chkImage->Disable();
 202 #endif // !wxUniv
 203
 204     sizerLeft->AddSpacer(5);
 205
 206     wxSizer *sizerUseLabels =
 207         new wxStaticBoxSizer(wxVERTICAL, this, _T("&Use the following labels?"));
 208     m_chkUseSelected = CreateCheckBoxAndAddToSizer(sizerUseLabels, _T("&Pushed"));
 209     m_chkUseFocused = CreateCheckBoxAndAddToSizer(sizerUseLabels, _T("&Focused"));
 210     m_chkUseHover = CreateCheckBoxAndAddToSizer(sizerUseLabels, _T("&Hover"));
 211     m_chkUseDisabled = CreateCheckBoxAndAddToSizer(sizerUseLabels, _T("&Disabled"));
 212     sizerLeft->Add(sizerUseLabels, wxSizerFlags().Expand().Border());
 213
 214     sizerLeft->AddSpacer(15);
 215
 216     // should be in sync with enums Button[HV]Align!
 217     static const wxString halign[] =
 218     {
 219         _T("left"),
 220         _T("centre"),
 221         _T("right"),
 222     };
 223
 224     static const wxString valign[] =
 225     {
 226         _T("top"),
 227         _T("centre"),
 228         _T("bottom"),
 229     };
 230
 231     m_radioHAlign = new wxRadioBox(this, wxID_ANY, _T("&Horz alignment"),
 232                                    wxDefaultPosition, wxDefaultSize,
 233                                    WXSIZEOF(halign), halign);
 234     m_radioVAlign = new wxRadioBox(this, wxID_ANY, _T("&Vert alignment"),
 235                                    wxDefaultPosition, wxDefaultSize,
 236                                    WXSIZEOF(valign), valign);
 237
 238     sizerLeft->Add(m_radioHAlign, 0, wxGROW | wxALL, 5);
 239     sizerLeft->Add(m_radioVAlign, 0, wxGROW | wxALL, 5);
 240
 241     sizerLeft->Add(5, 5, 0, wxGROW | wxALL, 5); // spacer
 242
 243     wxButton *btn = new wxButton(this, ButtonPage_Reset, _T("&Reset"));
 244     sizerLeft->Add(btn, 0, wxALIGN_CENTRE_HORIZONTAL | wxALL, 15);
 245
 246     // middle pane
 247     wxStaticBox *box2 = new wxStaticBox(this, wxID_ANY, _T("&Operations"));
 248     wxSizer *sizerMiddle = new wxStaticBoxSizer(box2, wxVERTICAL);
 249
 250     wxSizer *sizerRow = CreateSizerWithTextAndButton(ButtonPage_ChangeLabel,
 251                                                      _T("Change label"),
 252                                                      wxID_ANY,
 253                                                      &m_textLabel);
 254     m_textLabel->SetValue(_T("&Press me!"));
 255
 256     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 257
 258     // right pane
 259     m_sizerButton = new wxBoxSizer(wxHORIZONTAL);
 260     m_sizerButton->SetMinSize(150, 0);
 261
 262     // the 3 panes panes compose the window
 263     sizerTop->Add(sizerLeft, 0, wxGROW | (wxALL & ~wxLEFT), 10);
 264     sizerTop->Add(sizerMiddle, 1, wxGROW | wxALL, 10);
 265     sizerTop->Add(m_sizerButton, 1, wxGROW | (wxALL & ~wxRIGHT), 10);
 266
 267     // do create the main control
 268     Reset();
 269     CreateButton();
 270
 271     SetSizer(sizerTop);
 272
 273     sizerTop->Fit(this);
 274 }
 275
 276 // ----------------------------------------------------------------------------
 277 // operations
 278 // ----------------------------------------------------------------------------
 279
 280 void ButtonWidgetsPage::Reset()
 281 {
 282     m_chkBitmap->SetValue(false);
 283     m_chkFit->SetValue(true);
 284     m_chkImage->SetValue(false);
 285     m_chkDefault->SetValue(false);
 286
 287     m_chkUseSelected->SetValue(true);
 288     m_chkUseFocused->SetValue(true);
 289     m_chkUseHover->SetValue(true);
 290     m_chkUseDisabled->SetValue(true);
 291
 292     m_radioHAlign->SetSelection(ButtonHAlign_Centre);
 293     m_radioVAlign->SetSelection(ButtonVAlign_Centre);
 294 }
 295
 296 void ButtonWidgetsPage::CreateButton()
 297 {
 298     wxString label;
 299     if ( m_button )
 300     {
 301         label = m_button->GetLabel();
 302
 303         size_t count = m_sizerButton->GetChildren().GetCount();
 304         for ( size_t n = 0; n < count; n++ )
 305         {
 306             m_sizerButton->Remove( 0 );
 307         }
 308
 309         delete m_button;
 310     }
 311
 312     if ( label.empty() )
 313     {
 314         // creating for the first time or recreating a button after bitmap
 315         // button
 316         label = m_textLabel->GetValue();
 317     }
 318
 319     int flags = ms_defaultFlags;
 320     switch ( m_radioHAlign->GetSelection() )
 321     {
 322         case ButtonHAlign_Left:
 323             flags |= wxBU_LEFT;
 324             break;
 325
 326         default:
 327             wxFAIL_MSG(_T("unexpected radiobox selection"));
 328             // fall through
 329
 330         case ButtonHAlign_Centre:
 331             break;
 332
 333         case ButtonHAlign_Right:
 334             flags |= wxBU_RIGHT;
 335             break;
 336     }
 337
 338     switch ( m_radioVAlign->GetSelection() )
 339     {
 340         case ButtonVAlign_Top:
 341             flags |= wxBU_TOP;
 342             break;
 343
 344         default:
 345             wxFAIL_MSG(_T("unexpected radiobox selection"));
 346             // fall through
 347
 348         case ButtonVAlign_Centre:
 349             // centre vertical alignment is the default (no style)
 350             break;
 351
 352         case ButtonVAlign_Bottom:
 353             flags |= wxBU_BOTTOM;
 354             break;
 355     }
 356
 357     const bool isBitmapButton = m_chkBitmap->GetValue();
 358     if ( isBitmapButton )
 359     {
 360         wxBitmapButton *bbtn = new wxBitmapButton(this, ButtonPage_Button,
 361                                                   CreateBitmap(_T("normal")));
 362         if ( m_chkUseSelected->GetValue() )
 363             bbtn->SetBitmapSelected(CreateBitmap(_T("pushed")));
 364         if ( m_chkUseFocused->GetValue() )
 365             bbtn->SetBitmapFocus(CreateBitmap(_T("focused")));
 366         if ( m_chkUseHover->GetValue() )
 367             bbtn->SetBitmapHover(CreateBitmap(_T("hover")));
 368         if ( m_chkUseDisabled->GetValue() )
 369             bbtn->SetBitmapDisabled(CreateBitmap(_T("disabled")));
 370         m_button = bbtn;
 371     }
 372     else // normal button
 373     {
 374         m_button = new wxButton(this, ButtonPage_Button, label,
 375                                 wxDefaultPosition, wxDefaultSize,
 376                                 flags);
 377     }
 378
 379     m_chkUseSelected->Enable(isBitmapButton);
 380     m_chkUseFocused->Enable(isBitmapButton);
 381     m_chkUseHover->Enable(isBitmapButton);
 382     m_chkUseDisabled->Enable(isBitmapButton);
 383
 384 #ifdef __WXUNIVERSAL__
 385     if ( m_chkImage->GetValue() )
 386     {
 387         m_button->SetImageLabel(wxArtProvider::GetIcon(wxART_INFORMATION));
 388     }
 389 #endif // wxUniv
 390
 391     if ( m_chkDefault->GetValue() )
 392     {
 393         m_button->SetDefault();
 394     }
 395
 396     AddButtonToSizer();
 397
 398     m_sizerButton->Layout();
 399 }
 400
 401 void ButtonWidgetsPage::AddButtonToSizer()
 402 {
 403     if ( m_chkFit->GetValue() )
 404     {
 405         m_sizerButton->AddStretchSpacer(1);
 406         m_sizerButton->Add(m_button, wxSizerFlags(0).Centre().Border());
 407         m_sizerButton->AddStretchSpacer(1);
 408     }
 409     else // take up the entire space
 410     {
 411         m_sizerButton->Add(m_button, wxSizerFlags(1).Expand().Border());
 412     }
 413 }
 414
 415 // ----------------------------------------------------------------------------
 416 // event handlers
 417 // ----------------------------------------------------------------------------
 418
 419 void ButtonWidgetsPage::OnButtonReset(wxCommandEvent& WXUNUSED(event))
 420 {
 421     Reset();
 422
 423     CreateButton();
 424 }
 425
 426 void ButtonWidgetsPage::OnCheckOrRadioBox(wxCommandEvent& WXUNUSED(event))
 427 {
 428     CreateButton();
 429 }
 430
 431 void ButtonWidgetsPage::OnButtonChangeLabel(wxCommandEvent& WXUNUSED(event))
 432 {
 433     m_button->SetLabel(m_textLabel->GetValue());
 434 }
 435
 436 void ButtonWidgetsPage::OnButton(wxCommandEvent& WXUNUSED(event))
 437 {
 438     wxLogMessage(_T("Test button clicked."));
 439 }
 440
 441 // ----------------------------------------------------------------------------
 442 // bitmap button stuff
 443 // ----------------------------------------------------------------------------
 444
 445 wxBitmap ButtonWidgetsPage::CreateBitmap(const wxString& label)
 446 {
 447     wxBitmap bmp(180, 70); // shouldn't hardcode but it's simpler like this
 448     wxMemoryDC dc;
 449     dc.SelectObject(bmp);
 450     dc.SetBackground(wxBrush(*wxWHITE));
 451     dc.Clear();
 452     dc.SetTextForeground(*wxBLUE);
 453     dc.DrawLabel(wxStripMenuCodes(m_textLabel->GetValue()) + _T("\n")
 454                     _T("(") + label + _T(" state)"),
 455                  wxArtProvider::GetBitmap(wxART_INFORMATION),
 456                  wxRect(10, 10, bmp.GetWidth() - 20, bmp.GetHeight() - 20),
 457                  wxALIGN_CENTRE);
 458
 459     return bmp;
 460 }
 461