samples/widgets/bmpcombobox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Program:     wxWidgets Widgets Sample
   3 // Name:        bmpcombobox.cpp
   4 // Purpose:     Part of the widgets sample showing wxBitmapComboBox
   5 // Author:      Jaakko Salli
   6 // Created:     Sep-01-2006
   7 // Id:          $Id$
   8 // Copyright:   (c) 2006 Jaakko Salli
   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 #if wxUSE_BITMAPCOMBOBOX
  28
  29 // for all others, include the necessary headers
  30 #ifndef WX_PRECOMP
  31     #include "wx/log.h"
  32
  33     #include "wx/bitmap.h"
  34     #include "wx/button.h"
  35     #include "wx/checkbox.h"
  36     #include "wx/combobox.h"
  37     #include "wx/radiobox.h"
  38     #include "wx/statbox.h"
  39     #include "wx/textctrl.h"
  40     #include "wx/filedlg.h"
  41 #endif
  42
  43 #include "wx/stattext.h"
  44 #include "wx/dc.h"
  45 #include "wx/dcmemory.h"
  46 #include "wx/sizer.h"
  47 #include "wx/icon.h"
  48 #include "wx/dir.h"
  49 #include "wx/msgdlg.h"
  50 #include "wx/filename.h"
  51 #include "wx/image.h"
  52 #include "wx/imaglist.h"
  53 #include "wx/bmpcbox.h"
  54
  55 #include "itemcontainer.h"
  56 #include "widgets.h"
  57
  58 #include "icons/bmpcombobox.xpm"
  59
  60 // Images loaded from file are reduced this width and height, if larger
  61 #define IMG_SIZE_TRUNC  256
  62
  63
  64 // ----------------------------------------------------------------------------
  65 // constants
  66 // ----------------------------------------------------------------------------
  67
  68 // control ids
  69 enum
  70 {
  71     BitmapComboBoxPage_Reset = wxID_HIGHEST,
  72     BitmapComboBoxPage_Insert,
  73     BitmapComboBoxPage_InsertText,
  74     BitmapComboBoxPage_ChangeHeight,
  75     BitmapComboBoxPage_LoadFromFile,
  76     BitmapComboBoxPage_SetFromFile,
  77     BitmapComboBoxPage_AddWidgetIcons,
  78     BitmapComboBoxPage_AddSeveralWithImages,
  79     BitmapComboBoxPage_AddSeveral,
  80     BitmapComboBoxPage_AddMany,
  81     BitmapComboBoxPage_Clear,
  82     BitmapComboBoxPage_Change,
  83     BitmapComboBoxPage_Delete,
  84     BitmapComboBoxPage_DeleteText,
  85     BitmapComboBoxPage_DeleteSel,
  86     BitmapComboBoxPage_Combo,
  87     BitmapComboBoxPage_ContainerTests
  88 };
  89
  90 // kinds of comboboxes
  91 enum
  92 {
  93     ComboKind_Default,
  94     ComboKind_Simple,
  95     ComboKind_DropDown
  96 };
  97
  98 // ----------------------------------------------------------------------------
  99 // BitmapComboBoxWidgetsPage
 100 // ----------------------------------------------------------------------------
 101
 102 class BitmapComboBoxWidgetsPage : public ItemContainerWidgetsPage
 103 {
 104 public:
 105     BitmapComboBoxWidgetsPage(WidgetsBookCtrl *book, wxImageList *imaglist);
 106
 107     virtual wxControl *GetWidget() const { return m_combobox; }
 108     virtual wxItemContainer* GetContainer() const { return m_combobox; }
 109     virtual void RecreateWidget() { CreateCombo(); }
 110
 111     // lazy creation of the content
 112     virtual void CreateContent();
 113
 114 protected:
 115     // event handlers
 116     void OnButtonReset(wxCommandEvent& event);
 117     void OnButtonChange(wxCommandEvent& event);
 118     void OnButtonDelete(wxCommandEvent& event);
 119     void OnButtonDeleteSel(wxCommandEvent& event);
 120     void OnButtonClear(wxCommandEvent& event);
 121     void OnButtonInsert(wxCommandEvent &event);
 122     void OnTextChangeHeight(wxCommandEvent& event);
 123     void OnButtonLoadFromFile(wxCommandEvent& event);
 124     void OnButtonSetFromFile(wxCommandEvent& event);
 125     void OnButtonAddSeveral(wxCommandEvent& event);
 126     void OnButtonAddSeveralWithImages(wxCommandEvent& event);
 127     void OnButtonAddWidgetIcons(wxCommandEvent& event);
 128     void OnButtonAddMany(wxCommandEvent& event);
 129
 130     void OnComboBox(wxCommandEvent& event);
 131     void OnDropDown(wxCommandEvent& event);
 132     void OnCloseUp(wxCommandEvent& event);
 133     void OnComboText(wxCommandEvent& event);
 134
 135     void OnCheckOrRadioBox(wxCommandEvent& event);
 136
 137     void OnTextPopupWidth(wxCommandEvent& event);
 138     void OnTextPopupHeight(wxCommandEvent& event);
 139     void OnTextButtonAll(wxCommandEvent& event);
 140
 141     void OnUpdateUIInsert(wxUpdateUIEvent& event);
 142     void OnUpdateUIClearButton(wxUpdateUIEvent& event);
 143     void OnUpdateUIDeleteButton(wxUpdateUIEvent& event);
 144     void OnUpdateUIItemManipulator(wxUpdateUIEvent& event);
 145     void OnUpdateUIResetButton(wxUpdateUIEvent& event);
 146
 147     // reset the bmpcombobox parameters
 148     void Reset();
 149
 150     // (re)create the bmpcombobox
 151     void CreateCombo();
 152
 153     // helpers for creating bitmaps
 154     wxBitmap CreateBitmap(const wxColour& colour);
 155     wxBitmap LoadBitmap(const wxString& filepath);
 156     wxBitmap QueryBitmap(wxString* pStr);
 157
 158     void LoadWidgetImages( wxArrayString* strings, wxImageList* images );
 159
 160     wxSizer *CreateSizerWithSmallTextAndLabel(const wxString& label,
 161                                               wxWindowID id,
 162                                               wxTextCtrl **ppText);
 163
 164 #if wxUSE_IMAGE
 165     void RescaleImage(wxImage& image, int w, int h);
 166 #endif
 167
 168     // the controls
 169     // ------------
 170
 171     // the sel mode radiobox
 172     wxRadioBox *m_radioKind;
 173
 174     // the checkboxes for styles
 175     wxCheckBox *m_chkSort,
 176                *m_chkReadonly;
 177
 178     // the combobox itself and the sizer it is in
 179     wxBitmapComboBox *m_combobox;
 180     wxSizer *m_sizerCombo;
 181
 182     // the text entries for "Add/change string" and "Delete" buttons
 183     wxTextCtrl *m_textInsert,
 184                *m_textChangeHeight,
 185                *m_textChange,
 186                *m_textDelete;
 187
 188 private:
 189     DECLARE_EVENT_TABLE()
 190     DECLARE_WIDGETS_PAGE(BitmapComboBoxWidgetsPage)
 191 };
 192
 193 // ----------------------------------------------------------------------------
 194 // event tables
 195 // ----------------------------------------------------------------------------
 196
 197 BEGIN_EVENT_TABLE(BitmapComboBoxWidgetsPage, WidgetsPage)
 198     EVT_BUTTON(BitmapComboBoxPage_Reset, BitmapComboBoxWidgetsPage::OnButtonReset)
 199     EVT_BUTTON(BitmapComboBoxPage_Change, BitmapComboBoxWidgetsPage::OnButtonChange)
 200     EVT_BUTTON(BitmapComboBoxPage_Delete, BitmapComboBoxWidgetsPage::OnButtonDelete)
 201     EVT_BUTTON(BitmapComboBoxPage_DeleteSel, BitmapComboBoxWidgetsPage::OnButtonDeleteSel)
 202     EVT_BUTTON(BitmapComboBoxPage_Clear, BitmapComboBoxWidgetsPage::OnButtonClear)
 203     EVT_BUTTON(BitmapComboBoxPage_Insert, BitmapComboBoxWidgetsPage::OnButtonInsert)
 204     EVT_BUTTON(BitmapComboBoxPage_AddSeveral, BitmapComboBoxWidgetsPage::OnButtonAddSeveral)
 205     EVT_BUTTON(BitmapComboBoxPage_AddSeveralWithImages, BitmapComboBoxWidgetsPage::OnButtonAddSeveralWithImages)
 206     EVT_BUTTON(BitmapComboBoxPage_AddWidgetIcons, BitmapComboBoxWidgetsPage::OnButtonAddWidgetIcons)
 207     EVT_BUTTON(BitmapComboBoxPage_AddMany, BitmapComboBoxWidgetsPage::OnButtonAddMany)
 208     EVT_BUTTON(BitmapComboBoxPage_LoadFromFile, BitmapComboBoxWidgetsPage::OnButtonLoadFromFile)
 209     EVT_BUTTON(BitmapComboBoxPage_SetFromFile, BitmapComboBoxWidgetsPage::OnButtonSetFromFile)
 210     EVT_BUTTON(BitmapComboBoxPage_ContainerTests, ItemContainerWidgetsPage::OnButtonTestItemContainer)
 211
 212     EVT_TEXT_ENTER(BitmapComboBoxPage_InsertText, BitmapComboBoxWidgetsPage::OnButtonInsert)
 213     EVT_TEXT(BitmapComboBoxPage_ChangeHeight, BitmapComboBoxWidgetsPage::OnTextChangeHeight)
 214     EVT_TEXT_ENTER(BitmapComboBoxPage_DeleteText, BitmapComboBoxWidgetsPage::OnButtonDelete)
 215
 216     EVT_UPDATE_UI(BitmapComboBoxPage_Reset, BitmapComboBoxWidgetsPage::OnUpdateUIResetButton)
 217     EVT_UPDATE_UI(BitmapComboBoxPage_Insert, BitmapComboBoxWidgetsPage::OnUpdateUIInsert)
 218     EVT_UPDATE_UI(BitmapComboBoxPage_LoadFromFile, BitmapComboBoxWidgetsPage::OnUpdateUIInsert)
 219     EVT_UPDATE_UI(BitmapComboBoxPage_Clear, BitmapComboBoxWidgetsPage::OnUpdateUIClearButton)
 220     EVT_UPDATE_UI(BitmapComboBoxPage_DeleteText, BitmapComboBoxWidgetsPage::OnUpdateUIClearButton)
 221     EVT_UPDATE_UI(BitmapComboBoxPage_Delete, BitmapComboBoxWidgetsPage::OnUpdateUIDeleteButton)
 222     EVT_UPDATE_UI(BitmapComboBoxPage_Change, BitmapComboBoxWidgetsPage::OnUpdateUIItemManipulator)
 223     EVT_UPDATE_UI(BitmapComboBoxPage_SetFromFile, BitmapComboBoxWidgetsPage::OnUpdateUIItemManipulator)
 224     EVT_UPDATE_UI(BitmapComboBoxPage_DeleteSel, BitmapComboBoxWidgetsPage::OnUpdateUIItemManipulator)
 225
 226     EVT_COMBOBOX_DROPDOWN(BitmapComboBoxPage_Combo, BitmapComboBoxWidgetsPage::OnDropDown)
 227     EVT_COMBOBOX_CLOSEUP(BitmapComboBoxPage_Combo, BitmapComboBoxWidgetsPage::OnCloseUp)
 228     EVT_COMBOBOX(BitmapComboBoxPage_Combo, BitmapComboBoxWidgetsPage::OnComboBox)
 229     EVT_TEXT(BitmapComboBoxPage_Combo, BitmapComboBoxWidgetsPage::OnComboText)
 230     EVT_TEXT_ENTER(BitmapComboBoxPage_Combo, BitmapComboBoxWidgetsPage::OnComboText)
 231
 232     EVT_CHECKBOX(wxID_ANY, BitmapComboBoxWidgetsPage::OnCheckOrRadioBox)
 233     EVT_RADIOBOX(wxID_ANY, BitmapComboBoxWidgetsPage::OnCheckOrRadioBox)
 234 END_EVENT_TABLE()
 235
 236 // ============================================================================
 237 // implementation
 238 // ============================================================================
 239
 240 #if defined(__WXMSW__) || defined(__WXGTK__)
 241     #define NATIVE_OR_GENERIC_CTRLS     NATIVE_CTRLS
 242 #else
 243     #define NATIVE_OR_GENERIC_CTRLS     GENERIC_CTRLS
 244 #endif
 245
 246 IMPLEMENT_WIDGETS_PAGE(BitmapComboBoxWidgetsPage, _T("BitmapCombobox"),
 247                        NATIVE_OR_GENERIC_CTRLS | WITH_ITEMS_CTRLS | COMBO_CTRLS
 248                        );
 249
 250
 251 BitmapComboBoxWidgetsPage::BitmapComboBoxWidgetsPage(WidgetsBookCtrl *book,
 252                                              wxImageList *imaglist)
 253                   : ItemContainerWidgetsPage(book, imaglist, bmpcombobox_xpm)
 254 {
 255     // init everything
 256     m_chkSort =
 257     m_chkReadonly = NULL;
 258
 259     m_combobox = NULL;
 260     m_sizerCombo = NULL;
 261
 262     m_textInsert =
 263     m_textChangeHeight =
 264     m_textChange =
 265     m_textDelete = NULL;
 266 }
 267
 268 // create a sizer containing a label and a small text ctrl
 269 wxSizer *BitmapComboBoxWidgetsPage::CreateSizerWithSmallTextAndLabel(const wxString& label,
 270                                                                     wxWindowID id,
 271                                                                     wxTextCtrl **ppText)
 272 {
 273     wxControl* control = new wxStaticText(this, wxID_ANY, label);
 274     wxSizer *sizerRow = new wxBoxSizer(wxHORIZONTAL);
 275     wxTextCtrl *text = new wxTextCtrl(this, id, wxEmptyString,
 276         wxDefaultPosition, wxSize(50,wxDefaultCoord), wxTE_PROCESS_ENTER);
 277
 278     sizerRow->Add(control, 0, wxRIGHT | wxALIGN_CENTRE_VERTICAL, 5);
 279     sizerRow->Add(text, 1, wxFIXED_MINSIZE | wxLEFT | wxALIGN_CENTRE_VERTICAL, 5);
 280
 281     if ( ppText )
 282         *ppText = text;
 283
 284     return sizerRow;
 285 }
 286
 287 void BitmapComboBoxWidgetsPage::CreateContent()
 288 {
 289     /*
 290        What we create here is a frame having 3 panes: style pane is the
 291        leftmost one, in the middle the pane with buttons allowing to perform
 292        miscellaneous combobox operations and the pane containing the combobox
 293        itself to the right
 294     */
 295     wxSizer *sizerRow;
 296
 297     wxSizer *sizerTop = new wxBoxSizer(wxHORIZONTAL);
 298
 299     wxSizer *sizerLeft = new wxBoxSizer(wxVERTICAL);
 300
 301     // left pane - style box
 302     wxStaticBox *box = new wxStaticBox(this, wxID_ANY, _T("&Set style"));
 303
 304
 305     // should be in sync with ComboKind_XXX values
 306     static const wxString kinds[] =
 307     {
 308         _T("default"),
 309         _T("simple"),
 310         _T("drop down"),
 311     };
 312
 313     m_radioKind = new wxRadioBox(this, wxID_ANY, _T("Combobox &kind:"),
 314                                  wxDefaultPosition, wxDefaultSize,
 315                                  WXSIZEOF(kinds), kinds,
 316                                  1, wxRA_SPECIFY_COLS);
 317
 318     wxSizer *sizerStyle = new wxStaticBoxSizer(box, wxVERTICAL);
 319
 320     m_chkSort = CreateCheckBoxAndAddToSizer(sizerStyle, _T("&Sort items"));
 321     m_chkReadonly = CreateCheckBoxAndAddToSizer(sizerStyle, _T("&Read only"));
 322
 323     wxButton *btn = new wxButton(this, BitmapComboBoxPage_Reset, _T("&Reset"));
 324     sizerStyle->Add(btn, 0, wxALIGN_CENTRE_HORIZONTAL | wxALL, 3);
 325
 326     sizerLeft->Add(sizerStyle, 0, wxGROW | wxALIGN_CENTRE_HORIZONTAL);
 327     sizerLeft->Add(m_radioKind, 0, wxGROW | wxALL, 5);
 328
 329     // left pane - other options box
 330     box = new wxStaticBox(this, wxID_ANY, _T("Demo options"));
 331
 332     wxSizer *sizerOptions = new wxStaticBoxSizer(box, wxVERTICAL);
 333
 334     sizerRow = CreateSizerWithSmallTextAndLabel(_T("Control &height:"),
 335                                                 BitmapComboBoxPage_ChangeHeight,
 336                                                 &m_textChangeHeight);
 337     m_textChangeHeight->SetSize(20, wxDefaultCoord);
 338     sizerOptions->Add(sizerRow, 0, wxALL | wxFIXED_MINSIZE /*| wxGROW*/, 5);
 339
 340     sizerLeft->Add(sizerOptions, 0, wxGROW | wxALIGN_CENTRE_HORIZONTAL | wxTOP, 2);
 341
 342     // middle pane
 343     wxStaticBox *box2 = new wxStaticBox(this, wxID_ANY,
 344         _T("&Change wxBitmapComboBox contents"));
 345     wxSizer *sizerMiddle = new wxStaticBoxSizer(box2, wxVERTICAL);
 346
 347     btn = new wxButton(this, BitmapComboBoxPage_ContainerTests, _T("Run &tests"));
 348     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 349
 350 #if wxUSE_IMAGE
 351     btn = new wxButton(this, BitmapComboBoxPage_AddWidgetIcons, _T("Add &widget icons"));
 352     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 353
 354     btn = new wxButton(this, BitmapComboBoxPage_LoadFromFile, _T("Insert image from &file"));
 355     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 356
 357     btn = new wxButton(this, BitmapComboBoxPage_SetFromFile, _T("&Set image from file"));
 358     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 359 #endif
 360
 361     btn = new wxButton(this, BitmapComboBoxPage_AddSeveralWithImages, _T("A&ppend a few strings with images"));
 362     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 363
 364     btn = new wxButton(this, BitmapComboBoxPage_AddSeveral, _T("Append a &few strings"));
 365     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 366
 367     btn = new wxButton(this, BitmapComboBoxPage_AddMany, _T("Append &many strings"));
 368     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 369
 370     sizerRow = CreateSizerWithTextAndButton(BitmapComboBoxPage_Delete,
 371                                             _T("&Delete this item"),
 372                                             BitmapComboBoxPage_DeleteText,
 373                                             &m_textDelete);
 374     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 375
 376     btn = new wxButton(this, BitmapComboBoxPage_DeleteSel, _T("Delete &selection"));
 377     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 378
 379     btn = new wxButton(this, BitmapComboBoxPage_Clear, _T("&Clear"));
 380     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 381
 382 #if wxUSE_IMAGE
 383     wxInitAllImageHandlers();
 384 #endif
 385
 386     // right pane
 387     wxSizer *sizerRight = new wxBoxSizer(wxVERTICAL);
 388     m_combobox = new wxBitmapComboBox();
 389     m_combobox->Create(this, BitmapComboBoxPage_Combo, wxEmptyString,
 390                        wxDefaultPosition, wxDefaultSize,
 391                        0, NULL,
 392                        wxCB_READONLY);
 393
 394 #if defined(wxGENERIC_BITMAPCOMBOBOX)
 395     // This will sure make the list look nicer when larger images are used.
 396     m_combobox->SetPopupMaxHeight(600);
 397 #endif
 398
 399     sizerRight->Add(m_combobox, 0, wxGROW | wxALL, 5);
 400     sizerRight->SetMinSize(150, 0);
 401     m_sizerCombo = sizerRight; // save it to modify it later
 402
 403     // the 3 panes panes compose the window
 404     sizerTop->Add(sizerLeft, 0, wxGROW | (wxALL & ~wxLEFT), 10);
 405     sizerTop->Add(sizerMiddle, 5, wxGROW | wxALL, 10);
 406     sizerTop->Add(sizerRight, 4, wxGROW | (wxALL & ~wxRIGHT), 10);
 407
 408     // final initializations
 409     Reset();
 410
 411     SetSizer(sizerTop);
 412 }
 413
 414 // ----------------------------------------------------------------------------
 415 // operations
 416 // ----------------------------------------------------------------------------
 417
 418 void BitmapComboBoxWidgetsPage::Reset()
 419 {
 420     m_chkSort->SetValue(false);
 421     m_chkReadonly->SetValue(true);
 422 }
 423
 424 void BitmapComboBoxWidgetsPage::CreateCombo()
 425 {
 426     int flags = ms_defaultFlags;
 427
 428     if ( m_chkSort->GetValue() )
 429         flags |= wxCB_SORT;
 430     if ( m_chkReadonly->GetValue() )
 431         flags |= wxCB_READONLY;
 432
 433     switch ( m_radioKind->GetSelection() )
 434     {
 435         default:
 436             wxFAIL_MSG( _T("unknown combo kind") );
 437             // fall through
 438
 439         case ComboKind_Default:
 440             break;
 441
 442         case ComboKind_Simple:
 443             flags |= wxCB_SIMPLE;
 444             break;
 445
 446         case ComboKind_DropDown:
 447             flags = wxCB_DROPDOWN;
 448             break;
 449     }
 450
 451     wxArrayString items;
 452     wxArrayPtrVoid bitmaps;
 453     if ( m_combobox )
 454     {
 455         unsigned int count = m_combobox->GetCount();
 456         for ( unsigned int n = 0; n < count; n++ )
 457         {
 458             items.Add(m_combobox->GetString(n));
 459             bitmaps.Add(new wxBitmap(m_combobox->GetItemBitmap(n)));
 460         }
 461
 462         m_sizerCombo->Detach( m_combobox );
 463         delete m_combobox;
 464     }
 465
 466     m_combobox = new wxBitmapComboBox();
 467     m_combobox->Create(this, BitmapComboBoxPage_Combo, wxEmptyString,
 468                        wxDefaultPosition, wxDefaultSize,
 469                        0, NULL,
 470                        flags);
 471
 472 #if defined(wxGENERIC_BITMAPCOMBOBOX)
 473     // This will sure make the list look nicer when larger images are used.
 474     m_combobox->SetPopupMaxHeight(600);
 475 #endif
 476
 477     unsigned int count = items.GetCount();
 478     for ( unsigned int n = 0; n < count; n++ )
 479     {
 480         wxBitmap* bmp = (wxBitmap*) bitmaps[n];
 481         m_combobox->Append(items[n], *bmp);
 482         delete bmp;
 483     }
 484
 485     m_sizerCombo->Add(m_combobox, 0, wxGROW | wxALL, 5);
 486     m_sizerCombo->Layout();
 487
 488     // Allow changing height inorder to demonstrate flexible
 489     // size of image "thumbnail" painted in the control itself.
 490     long h = 0;
 491     m_textChangeHeight->GetValue().ToLong(&h);
 492     if ( h >= 5 )
 493         m_combobox->SetSize(wxDefaultCoord, h);
 494 }
 495
 496 // ----------------------------------------------------------------------------
 497 // event handlers
 498 // ----------------------------------------------------------------------------
 499
 500 void BitmapComboBoxWidgetsPage::OnButtonReset(wxCommandEvent& WXUNUSED(event))
 501 {
 502     Reset();
 503
 504     CreateCombo();
 505 }
 506
 507 void BitmapComboBoxWidgetsPage::OnButtonChange(wxCommandEvent& WXUNUSED(event))
 508 {
 509     int sel = m_combobox->GetSelection();
 510     if ( sel != wxNOT_FOUND )
 511     {
 512 #ifndef __WXGTK__
 513         m_combobox->SetString(sel, m_textChange->GetValue());
 514 #else
 515         wxLogMessage(_T("Not implemented in wxGTK"));
 516 #endif
 517     }
 518 }
 519
 520 void BitmapComboBoxWidgetsPage::OnButtonDelete(wxCommandEvent& WXUNUSED(event))
 521 {
 522     unsigned long n;
 523     if ( !m_textDelete->GetValue().ToULong(&n) ||
 524             (n >= m_combobox->GetCount()) )
 525     {
 526         return;
 527     }
 528
 529     m_combobox->Delete(n);
 530 }
 531
 532 void BitmapComboBoxWidgetsPage::OnButtonDeleteSel(wxCommandEvent& WXUNUSED(event))
 533 {
 534     int sel = m_combobox->GetSelection();
 535     if ( sel != wxNOT_FOUND )
 536     {
 537         m_combobox->Delete(sel);
 538     }
 539 }
 540
 541 void BitmapComboBoxWidgetsPage::OnButtonClear(wxCommandEvent& WXUNUSED(event))
 542 {
 543     m_combobox->Clear();
 544 }
 545
 546 void BitmapComboBoxWidgetsPage::OnButtonInsert(wxCommandEvent& WXUNUSED(event))
 547 {
 548     static unsigned int s_item = 0;
 549
 550     wxString s = m_textInsert->GetValue();
 551     if ( !m_textInsert->IsModified() )
 552     {
 553         // update the default string
 554         m_textInsert->SetValue(wxString::Format(_T("test item %u"), ++s_item));
 555     }
 556
 557     int sel = m_combobox->GetSelection();
 558     if ( sel == wxNOT_FOUND )
 559         sel = m_combobox->GetCount();
 560
 561     m_combobox->Insert(s, wxNullBitmap, m_combobox->GetSelection());
 562 }
 563
 564 void BitmapComboBoxWidgetsPage::OnTextChangeHeight(wxCommandEvent& WXUNUSED(event))
 565 {
 566     long h = 0;
 567     if ( m_textChangeHeight )
 568         m_textChangeHeight->GetValue().ToLong(&h);
 569     if ( h < 5 )
 570         return;
 571     m_combobox->SetSize(wxDefaultCoord, h);
 572 }
 573
 574 void BitmapComboBoxWidgetsPage::OnButtonLoadFromFile(wxCommandEvent& WXUNUSED(event))
 575 {
 576     wxString s;
 577     int sel = m_combobox->GetSelection();
 578     if ( sel == wxNOT_FOUND )
 579         sel = m_combobox->GetCount();
 580
 581     wxBitmap bmp = QueryBitmap(&s);
 582     if (bmp.IsOk())
 583         m_combobox->Insert(s, bmp, sel);
 584 }
 585
 586 void BitmapComboBoxWidgetsPage::OnButtonSetFromFile(wxCommandEvent& WXUNUSED(event))
 587 {
 588     wxBitmap bmp = QueryBitmap(NULL);
 589     if (bmp.IsOk())
 590         m_combobox->SetItemBitmap(m_combobox->GetSelection(), bmp);
 591 }
 592
 593 void BitmapComboBoxWidgetsPage::OnButtonAddMany(wxCommandEvent& WXUNUSED(event))
 594 {
 595     // "many" means 1000 here
 596     for ( unsigned int n = 0; n < 1000; n++ )
 597     {
 598         m_combobox->Append(wxString::Format(_T("item #%u"), n));
 599     }
 600 }
 601
 602 void BitmapComboBoxWidgetsPage::OnButtonAddSeveral(wxCommandEvent& WXUNUSED(event))
 603 {
 604     m_combobox->Append(_T("First"));
 605     m_combobox->Append(_T("another one"));
 606     m_combobox->Append(_T("and the last (very very very very very very very very very very long) one"));
 607 }
 608
 609 void BitmapComboBoxWidgetsPage::OnButtonAddSeveralWithImages(wxCommandEvent& WXUNUSED(event))
 610 {
 611     static const struct TestEntry
 612     {
 613         const char *text;
 614         unsigned long rgb;
 615     } s_entries[] =
 616     {
 617         { "Red circle",     0x0000ff },
 618         { "Blue circle",    0xff0000 },
 619         { "Green circle",   0x00ff00 },
 620         { "Black circle",   0x000000 },
 621     };
 622
 623     for ( unsigned i = 0; i < WXSIZEOF(s_entries); i++ )
 624     {
 625         const TestEntry& e = s_entries[i];
 626         m_combobox->Append(e.text, CreateBitmap(wxColour(e.rgb)));
 627     }
 628 }
 629
 630 #if wxUSE_IMAGE
 631 void BitmapComboBoxWidgetsPage::RescaleImage(wxImage& image, int w, int h)
 632 {
 633     if ( image.GetWidth() == w && image.GetHeight() == h )
 634         return;
 635
 636     if ( w <= 0 || h <= 0 )
 637         return;
 638
 639     static bool isFirstScale = true;
 640
 641     if ( isFirstScale && m_combobox->GetCount() > 0 )
 642     {
 643         wxMessageBox( wxT("wxBitmapComboBox normally only supports images of one size. ")
 644                       wxT("However, for demonstration purposes, loaded bitmaps are scaled to fit ")
 645                       wxT("using wxImage::Rescale."),
 646                       wxT("Notice"),
 647                       wxOK,
 648                       this );
 649
 650         isFirstScale = false;
 651     }
 652
 653     image.Rescale(w, h);
 654 }
 655 #endif
 656
 657 void BitmapComboBoxWidgetsPage::LoadWidgetImages( wxArrayString* strings, wxImageList* images )
 658 {
 659     wxFileName fn;
 660     fn.AssignCwd();
 661     fn.AppendDir(wxT("icons"));
 662
 663     wxSetCursor(*wxHOURGLASS_CURSOR);
 664
 665     if ( !wxDir::Exists(fn.GetFullPath()) ||
 666          !wxDir::GetAllFiles(fn.GetFullPath(),strings,wxT("*.xpm")) )
 667     {
 668         // Try ../../samples/widgets/icons
 669         fn.RemoveLastDir();
 670         fn.RemoveLastDir();
 671         fn.AppendDir(wxT("icons"));
 672         if ( !wxDir::Exists(fn.GetFullPath()) ||
 673              !wxDir::GetAllFiles(fn.GetFullPath(),strings,wxT("*.xpm")) )
 674         {
 675             // Try ../../../samples/widgets/icons
 676             fn.AssignCwd();
 677             fn.RemoveLastDir();
 678             fn.RemoveLastDir();
 679             fn.RemoveLastDir();
 680             fn.AppendDir(wxT("samples"));
 681             fn.AppendDir(wxT("widgets"));
 682             fn.AppendDir(wxT("icons"));
 683             if ( !wxDir::Exists(fn.GetFullPath()) ||
 684                  !wxDir::GetAllFiles(fn.GetFullPath(),strings,wxT("*.xpm")) )
 685             {
 686                 wxLogWarning(wxT("Could not load widget icons."));
 687                 wxSetCursor(*wxSTANDARD_CURSOR);
 688                 return;
 689             }
 690         }
 691     }
 692
 693     unsigned int i;
 694
 695     // Get size of existing images in list
 696     wxSize foundSize = m_combobox->GetBitmapSize();
 697
 698     for ( i=0; i<strings->size(); i++ )
 699     {
 700         fn.SetFullName((*strings)[i]);
 701         wxString name = fn.GetName();
 702
 703         // Handle few exceptions
 704         if ( name == wxT("bmpbtn") )
 705         {
 706             strings->RemoveAt(i);
 707             i--;
 708         }
 709         else
 710         {
 711 #if wxUSE_IMAGE
 712             wxASSERT(fn.FileExists());
 713             wxImage image(fn.GetFullPath());
 714             wxASSERT(image.Ok());
 715             RescaleImage(image, foundSize.x, foundSize.y);
 716             wxBitmap bmp(image);
 717             wxASSERT( bmp.Ok() );
 718 #else
 719             wxBitmap bmp(wxNullBitmap);
 720 #endif
 721             images->Add(bmp);
 722             (*strings)[i] = name;
 723
 724             // if the combobox is empty, use as bitmap size of the image list
 725             // the size of the first valid image loaded
 726             if (foundSize == wxDefaultSize)
 727                 foundSize = bmp.GetSize();
 728         }
 729     }
 730
 731     wxSetCursor(*wxSTANDARD_CURSOR);
 732 }
 733
 734 void BitmapComboBoxWidgetsPage::OnButtonAddWidgetIcons(wxCommandEvent& WXUNUSED(event))
 735 {
 736     wxArrayString strings;
 737
 738     wxSize sz = m_combobox->GetBitmapSize();
 739     if ( sz.x <= 0 )
 740     {
 741         sz.x = 32;
 742         sz.y = 32;
 743     }
 744
 745     wxImageList images(sz.x, sz.y);
 746
 747     LoadWidgetImages(&strings, &images);
 748
 749     unsigned int i;
 750
 751     for ( i=0; i<strings.size(); i++ )
 752     {
 753         m_combobox->Append(strings[i], images.GetBitmap(i));
 754     }
 755 }
 756
 757 void BitmapComboBoxWidgetsPage::OnUpdateUIResetButton(wxUpdateUIEvent& event)
 758 {
 759     if (m_combobox)
 760         event.Enable( m_chkSort->GetValue() || m_chkReadonly->GetValue() );
 761 }
 762
 763 void BitmapComboBoxWidgetsPage::OnUpdateUIInsert(wxUpdateUIEvent& event)
 764 {
 765     if (m_combobox)
 766     {
 767         bool enable = !(m_combobox->GetWindowStyle() & wxCB_SORT);
 768
 769         event.Enable(enable);
 770     }
 771 }
 772
 773 void BitmapComboBoxWidgetsPage::OnUpdateUIDeleteButton(wxUpdateUIEvent& event)
 774 {
 775     if (m_combobox)
 776     {
 777       unsigned long n;
 778       event.Enable(m_textDelete->GetValue().ToULong(&n) &&
 779         (n < (unsigned)m_combobox->GetCount()));
 780     }
 781 }
 782
 783 void BitmapComboBoxWidgetsPage::OnUpdateUIItemManipulator(wxUpdateUIEvent& event)
 784 {
 785     if (m_combobox)
 786         event.Enable(m_combobox->GetSelection() != wxNOT_FOUND);
 787 }
 788
 789 void BitmapComboBoxWidgetsPage::OnUpdateUIClearButton(wxUpdateUIEvent& event)
 790 {
 791     if (m_combobox)
 792         event.Enable(m_combobox->GetCount() != 0);
 793 }
 794
 795 void BitmapComboBoxWidgetsPage::OnComboText(wxCommandEvent& event)
 796 {
 797     if (!m_combobox)
 798         return;
 799
 800     wxString s = event.GetString();
 801
 802     wxASSERT_MSG( s == m_combobox->GetValue(),
 803                   _T("event and combobox values should be the same") );
 804
 805     if (event.GetEventType() == wxEVT_COMMAND_TEXT_ENTER)
 806         wxLogMessage(_T("BitmapCombobox enter pressed (now '%s')"), s.c_str());
 807     else
 808         wxLogMessage(_T("BitmapCombobox text changed (now '%s')"), s.c_str());
 809 }
 810
 811 void BitmapComboBoxWidgetsPage::OnComboBox(wxCommandEvent& event)
 812 {
 813     long sel = event.GetInt();
 814     m_textDelete->SetValue(wxString::Format(_T("%ld"), sel));
 815
 816     wxLogMessage(_T("BitmapCombobox item %ld selected"), sel);
 817
 818     wxLogMessage(_T("BitmapCombobox GetValue(): %s"), m_combobox->GetValue().c_str() );
 819 }
 820
 821 void BitmapComboBoxWidgetsPage::OnCheckOrRadioBox(wxCommandEvent& WXUNUSED(event))
 822 {
 823     CreateCombo();
 824 }
 825
 826 #if wxUSE_IMAGE
 827 wxBitmap BitmapComboBoxWidgetsPage::LoadBitmap(const wxString& filepath)
 828 {
 829     // Get size of existing images in list
 830     wxSize foundSize = m_combobox->GetBitmapSize();
 831
 832     // Have some reasonable maximum size
 833     if ( foundSize.x <= 0 )
 834     {
 835         foundSize.x = IMG_SIZE_TRUNC;
 836         foundSize.y = IMG_SIZE_TRUNC;
 837     }
 838
 839     wxImage image(filepath);
 840     if ( image.Ok() )
 841     {
 842         // Rescale very large images
 843         int ow = image.GetWidth();
 844         int oh = image.GetHeight();
 845
 846         if ( foundSize.x > 0 &&
 847              (ow != foundSize.x || oh != foundSize.y) )
 848         {
 849             int w = ow;
 850             if ( w > foundSize.x )
 851                 w = foundSize.x;
 852             int h = oh;
 853             if ( h > foundSize.y )
 854                 h = foundSize.y;
 855
 856             RescaleImage(image, w, h);
 857         }
 858
 859         return wxBitmap(image);
 860     }
 861
 862     return wxNullBitmap;
 863 }
 864 #else
 865 wxBitmap BitmapComboBoxWidgetsPage::LoadBitmap(const wxString& WXUNUSED(filepath))
 866 {
 867     return wxNullBitmap;
 868 }
 869 #endif
 870
 871 wxBitmap BitmapComboBoxWidgetsPage::QueryBitmap(wxString* pStr)
 872 {
 873     wxString filepath = wxLoadFileSelector(wxT("image"),
 874                                        wxEmptyString,
 875                                        wxEmptyString,
 876                                        this);
 877
 878     wxBitmap bitmap;
 879
 880     ::wxSetCursor( *wxHOURGLASS_CURSOR );
 881
 882     if ( filepath.length() )
 883     {
 884         if ( pStr )
 885         {
 886             *pStr = wxFileName(filepath).GetName();
 887         }
 888
 889         bitmap = LoadBitmap(filepath);
 890     }
 891
 892     if (bitmap.IsOk())
 893         wxLogDebug(wxT("%i, %i"),bitmap.GetWidth(), bitmap.GetHeight());
 894
 895     ::wxSetCursor( *wxSTANDARD_CURSOR );
 896
 897     return bitmap;
 898 }
 899
 900 wxBitmap BitmapComboBoxWidgetsPage::CreateBitmap(const wxColour& colour)
 901 {
 902     const int w = 10,
 903               h = 10;
 904
 905     wxMemoryDC dc;
 906     wxBitmap bmp(w, h);
 907     dc.SelectObject(bmp);
 908
 909     // Draw transparent background
 910     wxColour magic(255, 0, 255);
 911     wxBrush magicBrush(magic);
 912     dc.SetBrush(magicBrush);
 913     dc.SetPen(*wxTRANSPARENT_PEN);
 914     dc.DrawRectangle(0, 0, w, h);
 915
 916     // Draw image content
 917     dc.SetBrush(wxBrush(colour));
 918     dc.DrawCircle(h/2, h/2+1, h/2);
 919
 920     dc.SelectObject(wxNullBitmap);
 921
 922     // Finalize transparency with a mask
 923     wxMask *mask = new wxMask(bmp, magic);
 924     bmp.SetMask(mask);
 925
 926     return bmp;
 927 }
 928
 929 void BitmapComboBoxWidgetsPage::OnDropDown(wxCommandEvent& WXUNUSED(event))
 930 {
 931     wxLogMessage(_T("Combobox dropped down"));
 932 }
 933
 934 void BitmapComboBoxWidgetsPage::OnCloseUp(wxCommandEvent& WXUNUSED(event))
 935 {
 936     wxLogMessage(_T("Combobox closed up"));
 937 }
 938
 939 #endif // wxUSE_BITMAPCOMBOBOX