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 // Licence:     wxWindows licence
  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, wxT("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, wxT("&Set style"));
 303
 304
 305     // should be in sync with ComboKind_XXX values
 306     static const wxString kinds[] =
 307     {
 308         wxT("default"),
 309         wxT("simple"),
 310         wxT("drop down"),
 311     };
 312
 313     m_radioKind = new wxRadioBox(this, wxID_ANY, wxT("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, wxT("&Sort items"));
 321     m_chkReadonly = CreateCheckBoxAndAddToSizer(sizerStyle, wxT("&Read only"));
 322
 323     wxButton *btn = new wxButton(this, BitmapComboBoxPage_Reset, wxT("&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, wxT("Demo options"));
 331
 332     wxSizer *sizerOptions = new wxStaticBoxSizer(box, wxVERTICAL);
 333
 334     sizerRow = CreateSizerWithSmallTextAndLabel(wxT("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         wxT("&Change wxBitmapComboBox contents"));
 345     wxSizer *sizerMiddle = new wxStaticBoxSizer(box2, wxVERTICAL);
 346
 347     btn = new wxButton(this, BitmapComboBoxPage_ContainerTests, wxT("Run &tests"));
 348     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 349
 350 #if wxUSE_IMAGE
 351     btn = new wxButton(this, BitmapComboBoxPage_AddWidgetIcons, wxT("Add &widget icons"));
 352     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 353
 354     btn = new wxButton(this, BitmapComboBoxPage_LoadFromFile, wxT("Insert image from &file"));
 355     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 356
 357     btn = new wxButton(this, BitmapComboBoxPage_SetFromFile, wxT("&Set image from file"));
 358     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 359 #endif
 360
 361     btn = new wxButton(this, BitmapComboBoxPage_AddSeveralWithImages, wxT("A&ppend a few strings with images"));
 362     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 363
 364     btn = new wxButton(this, BitmapComboBoxPage_AddSeveral, wxT("Append a &few strings"));
 365     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 366
 367     btn = new wxButton(this, BitmapComboBoxPage_AddMany, wxT("Append &many strings"));
 368     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 369
 370     sizerRow = CreateSizerWithTextAndButton(BitmapComboBoxPage_Delete,
 371                                             wxT("&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, wxT("Delete &selection"));
 377     sizerMiddle->Add(btn, 0, wxALL | wxGROW, 5);
 378
 379     btn = new wxButton(this, BitmapComboBoxPage_Clear, wxT("&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( wxT("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             wxBitmap bmp = m_combobox->GetItemBitmap(n);
 460             bitmaps.Add(new wxBitmap(bmp));
 461         }
 462
 463         m_sizerCombo->Detach( m_combobox );
 464         delete m_combobox;
 465     }
 466
 467     m_combobox = new wxBitmapComboBox();
 468     m_combobox->Create(this, BitmapComboBoxPage_Combo, wxEmptyString,
 469                        wxDefaultPosition, wxDefaultSize,
 470                        0, NULL,
 471                        flags);
 472
 473 #if defined(wxGENERIC_BITMAPCOMBOBOX)
 474     // This will sure make the list look nicer when larger images are used.
 475     m_combobox->SetPopupMaxHeight(600);
 476 #endif
 477
 478     unsigned int count = items.GetCount();
 479     for ( unsigned int n = 0; n < count; n++ )
 480     {
 481         wxBitmap* bmp = (wxBitmap*) bitmaps[n];
 482         m_combobox->Append(items[n], *bmp);
 483         delete bmp;
 484     }
 485
 486     m_sizerCombo->Add(m_combobox, 0, wxGROW | wxALL, 5);
 487     m_sizerCombo->Layout();
 488
 489     // Allow changing height inorder to demonstrate flexible
 490     // size of image "thumbnail" painted in the control itself.
 491     long h = 0;
 492     m_textChangeHeight->GetValue().ToLong(&h);
 493     if ( h >= 5 )
 494         m_combobox->SetSize(wxDefaultCoord, h);
 495 }
 496
 497 // ----------------------------------------------------------------------------
 498 // event handlers
 499 // ----------------------------------------------------------------------------
 500
 501 void BitmapComboBoxWidgetsPage::OnButtonReset(wxCommandEvent& WXUNUSED(event))
 502 {
 503     Reset();
 504
 505     CreateCombo();
 506 }
 507
 508 void BitmapComboBoxWidgetsPage::OnButtonChange(wxCommandEvent& WXUNUSED(event))
 509 {
 510     int sel = m_combobox->GetSelection();
 511     if ( sel != wxNOT_FOUND )
 512     {
 513 #ifndef __WXGTK__
 514         m_combobox->SetString(sel, m_textChange->GetValue());
 515 #else
 516         wxLogMessage(wxT("Not implemented in wxGTK"));
 517 #endif
 518     }
 519 }
 520
 521 void BitmapComboBoxWidgetsPage::OnButtonDelete(wxCommandEvent& WXUNUSED(event))
 522 {
 523     unsigned long n;
 524     if ( !m_textDelete->GetValue().ToULong(&n) ||
 525             (n >= m_combobox->GetCount()) )
 526     {
 527         return;
 528     }
 529
 530     m_combobox->Delete(n);
 531 }
 532
 533 void BitmapComboBoxWidgetsPage::OnButtonDeleteSel(wxCommandEvent& WXUNUSED(event))
 534 {
 535     int sel = m_combobox->GetSelection();
 536     if ( sel != wxNOT_FOUND )
 537     {
 538         m_combobox->Delete(sel);
 539     }
 540 }
 541
 542 void BitmapComboBoxWidgetsPage::OnButtonClear(wxCommandEvent& WXUNUSED(event))
 543 {
 544     m_combobox->Clear();
 545 }
 546
 547 void BitmapComboBoxWidgetsPage::OnButtonInsert(wxCommandEvent& WXUNUSED(event))
 548 {
 549     static unsigned int s_item = 0;
 550
 551     wxString s = m_textInsert->GetValue();
 552     if ( !m_textInsert->IsModified() )
 553     {
 554         // update the default string
 555         m_textInsert->SetValue(wxString::Format(wxT("test item %u"), ++s_item));
 556     }
 557
 558     int sel = m_combobox->GetSelection();
 559     if ( sel == wxNOT_FOUND )
 560         sel = m_combobox->GetCount();
 561
 562     m_combobox->Insert(s, wxNullBitmap, m_combobox->GetSelection());
 563 }
 564
 565 void BitmapComboBoxWidgetsPage::OnTextChangeHeight(wxCommandEvent& WXUNUSED(event))
 566 {
 567     long h = 0;
 568     if ( m_textChangeHeight )
 569         m_textChangeHeight->GetValue().ToLong(&h);
 570     if ( h < 5 )
 571         return;
 572     m_combobox->SetSize(wxDefaultCoord, h);
 573 }
 574
 575 void BitmapComboBoxWidgetsPage::OnButtonLoadFromFile(wxCommandEvent& WXUNUSED(event))
 576 {
 577     wxString s;
 578     int sel = m_combobox->GetSelection();
 579     if ( sel == wxNOT_FOUND )
 580         sel = m_combobox->GetCount();
 581
 582     wxBitmap bmp = QueryBitmap(&s);
 583     if (bmp.IsOk())
 584         m_combobox->Insert(s, bmp, sel);
 585 }
 586
 587 void BitmapComboBoxWidgetsPage::OnButtonSetFromFile(wxCommandEvent& WXUNUSED(event))
 588 {
 589     wxBitmap bmp = QueryBitmap(NULL);
 590     if (bmp.IsOk())
 591         m_combobox->SetItemBitmap(m_combobox->GetSelection(), bmp);
 592 }
 593
 594 void BitmapComboBoxWidgetsPage::OnButtonAddMany(wxCommandEvent& WXUNUSED(event))
 595 {
 596     // "many" means 1000 here
 597     for ( unsigned int n = 0; n < 1000; n++ )
 598     {
 599         m_combobox->Append(wxString::Format(wxT("item #%u"), n));
 600     }
 601 }
 602
 603 void BitmapComboBoxWidgetsPage::OnButtonAddSeveral(wxCommandEvent& WXUNUSED(event))
 604 {
 605     m_combobox->Append(wxT("First"));
 606     m_combobox->Append(wxT("another one"));
 607     m_combobox->Append(wxT("and the last (very very very very very very very very very very long) one"));
 608 }
 609
 610 void BitmapComboBoxWidgetsPage::OnButtonAddSeveralWithImages(wxCommandEvent& WXUNUSED(event))
 611 {
 612     static const struct TestEntry
 613     {
 614         const char *text;
 615         unsigned long rgb;
 616     } s_entries[] =
 617     {
 618         { "Red circle",     0x0000ff },
 619         { "Blue circle",    0xff0000 },
 620         { "Green circle",   0x00ff00 },
 621         { "Black circle",   0x000000 },
 622     };
 623
 624     for ( unsigned i = 0; i < WXSIZEOF(s_entries); i++ )
 625     {
 626         const TestEntry& e = s_entries[i];
 627         m_combobox->Append(e.text, CreateBitmap(wxColour(e.rgb)));
 628     }
 629 }
 630
 631 #if wxUSE_IMAGE
 632 void BitmapComboBoxWidgetsPage::RescaleImage(wxImage& image, int w, int h)
 633 {
 634     if ( image.GetWidth() == w && image.GetHeight() == h )
 635         return;
 636
 637     if ( w <= 0 || h <= 0 )
 638         return;
 639
 640     static bool isFirstScale = true;
 641
 642     if ( isFirstScale && m_combobox->GetCount() > 0 )
 643     {
 644         wxMessageBox( wxT("wxBitmapComboBox normally only supports images of one size. ")
 645                       wxT("However, for demonstration purposes, loaded bitmaps are scaled to fit ")
 646                       wxT("using wxImage::Rescale."),
 647                       wxT("Notice"),
 648                       wxOK,
 649                       this );
 650
 651         isFirstScale = false;
 652     }
 653
 654     image.Rescale(w, h);
 655 }
 656 #endif
 657
 658 void BitmapComboBoxWidgetsPage::LoadWidgetImages( wxArrayString* strings, wxImageList* images )
 659 {
 660     wxFileName fn;
 661     fn.AssignCwd();
 662     fn.AppendDir(wxT("icons"));
 663
 664     wxSetCursor(*wxHOURGLASS_CURSOR);
 665
 666     if ( !wxDir::Exists(fn.GetFullPath()) ||
 667          !wxDir::GetAllFiles(fn.GetFullPath(),strings,wxT("*.xpm")) )
 668     {
 669         // Try ../../samples/widgets/icons
 670         fn.RemoveLastDir();
 671         fn.RemoveLastDir();
 672         fn.AppendDir(wxT("icons"));
 673         if ( !wxDir::Exists(fn.GetFullPath()) ||
 674              !wxDir::GetAllFiles(fn.GetFullPath(),strings,wxT("*.xpm")) )
 675         {
 676             // Try ../../../samples/widgets/icons
 677             fn.AssignCwd();
 678             fn.RemoveLastDir();
 679             fn.RemoveLastDir();
 680             fn.RemoveLastDir();
 681             fn.AppendDir(wxT("samples"));
 682             fn.AppendDir(wxT("widgets"));
 683             fn.AppendDir(wxT("icons"));
 684             if ( !wxDir::Exists(fn.GetFullPath()) ||
 685                  !wxDir::GetAllFiles(fn.GetFullPath(),strings,wxT("*.xpm")) )
 686             {
 687                 wxLogWarning(wxT("Could not load widget icons."));
 688                 wxSetCursor(*wxSTANDARD_CURSOR);
 689                 return;
 690             }
 691         }
 692     }
 693
 694     unsigned int i;
 695
 696     // Get size of existing images in list
 697     wxSize foundSize = m_combobox->GetBitmapSize();
 698
 699     for ( i=0; i<strings->size(); i++ )
 700     {
 701         fn.SetFullName((*strings)[i]);
 702         wxString name = fn.GetName();
 703
 704         // Handle few exceptions
 705         if ( name == wxT("bmpbtn") )
 706         {
 707             strings->RemoveAt(i);
 708             i--;
 709         }
 710         else
 711         {
 712 #if wxUSE_IMAGE
 713             wxASSERT(fn.FileExists());
 714             wxImage image(fn.GetFullPath());
 715             wxASSERT(image.Ok());
 716             RescaleImage(image, foundSize.x, foundSize.y);
 717             wxBitmap bmp(image);
 718             wxASSERT( bmp.Ok() );
 719 #else
 720             wxBitmap bmp(wxNullBitmap);
 721 #endif
 722             images->Add(bmp);
 723             (*strings)[i] = name;
 724
 725             // if the combobox is empty, use as bitmap size of the image list
 726             // the size of the first valid image loaded
 727             if (foundSize == wxDefaultSize)
 728                 foundSize = bmp.GetSize();
 729         }
 730     }
 731
 732     wxSetCursor(*wxSTANDARD_CURSOR);
 733 }
 734
 735 void BitmapComboBoxWidgetsPage::OnButtonAddWidgetIcons(wxCommandEvent& WXUNUSED(event))
 736 {
 737     wxArrayString strings;
 738
 739     wxSize sz = m_combobox->GetBitmapSize();
 740     if ( sz.x <= 0 )
 741     {
 742         sz.x = 32;
 743         sz.y = 32;
 744     }
 745
 746     wxImageList images(sz.x, sz.y);
 747
 748     LoadWidgetImages(&strings, &images);
 749
 750     unsigned int i;
 751
 752     for ( i=0; i<strings.size(); i++ )
 753     {
 754         m_combobox->Append(strings[i], images.GetBitmap(i));
 755     }
 756 }
 757
 758 void BitmapComboBoxWidgetsPage::OnUpdateUIResetButton(wxUpdateUIEvent& event)
 759 {
 760     if (m_combobox)
 761         event.Enable( m_chkSort->GetValue() || m_chkReadonly->GetValue() );
 762 }
 763
 764 void BitmapComboBoxWidgetsPage::OnUpdateUIInsert(wxUpdateUIEvent& event)
 765 {
 766     if (m_combobox)
 767     {
 768         bool enable = !(m_combobox->GetWindowStyle() & wxCB_SORT);
 769
 770         event.Enable(enable);
 771     }
 772 }
 773
 774 void BitmapComboBoxWidgetsPage::OnUpdateUIDeleteButton(wxUpdateUIEvent& event)
 775 {
 776     if (m_combobox)
 777     {
 778       unsigned long n;
 779       event.Enable(m_textDelete->GetValue().ToULong(&n) &&
 780         (n < (unsigned)m_combobox->GetCount()));
 781     }
 782 }
 783
 784 void BitmapComboBoxWidgetsPage::OnUpdateUIItemManipulator(wxUpdateUIEvent& event)
 785 {
 786     if (m_combobox)
 787         event.Enable(m_combobox->GetSelection() != wxNOT_FOUND);
 788 }
 789
 790 void BitmapComboBoxWidgetsPage::OnUpdateUIClearButton(wxUpdateUIEvent& event)
 791 {
 792     if (m_combobox)
 793         event.Enable(m_combobox->GetCount() != 0);
 794 }
 795
 796 void BitmapComboBoxWidgetsPage::OnComboText(wxCommandEvent& event)
 797 {
 798     if (!m_combobox)
 799         return;
 800
 801     wxString s = event.GetString();
 802
 803     wxASSERT_MSG( s == m_combobox->GetValue(),
 804                   wxT("event and combobox values should be the same") );
 805
 806     if (event.GetEventType() == wxEVT_COMMAND_TEXT_ENTER)
 807     {
 808         wxLogMessage(wxT("BitmapCombobox enter pressed (now '%s')"), s.c_str());
 809     }
 810     else
 811     {
 812         wxLogMessage(wxT("BitmapCombobox text changed (now '%s')"), s.c_str());
 813     }
 814 }
 815
 816 void BitmapComboBoxWidgetsPage::OnComboBox(wxCommandEvent& event)
 817 {
 818     long sel = event.GetInt();
 819     m_textDelete->SetValue(wxString::Format(wxT("%ld"), sel));
 820
 821     wxLogMessage(wxT("BitmapCombobox item %ld selected"), sel);
 822
 823     wxLogMessage(wxT("BitmapCombobox GetValue(): %s"), m_combobox->GetValue().c_str() );
 824 }
 825
 826 void BitmapComboBoxWidgetsPage::OnCheckOrRadioBox(wxCommandEvent& WXUNUSED(event))
 827 {
 828     CreateCombo();
 829 }
 830
 831 #if wxUSE_IMAGE
 832 wxBitmap BitmapComboBoxWidgetsPage::LoadBitmap(const wxString& filepath)
 833 {
 834     // Get size of existing images in list
 835     wxSize foundSize = m_combobox->GetBitmapSize();
 836
 837     // Have some reasonable maximum size
 838     if ( foundSize.x <= 0 )
 839     {
 840         foundSize.x = IMG_SIZE_TRUNC;
 841         foundSize.y = IMG_SIZE_TRUNC;
 842     }
 843
 844     wxImage image(filepath);
 845     if ( image.Ok() )
 846     {
 847         // Rescale very large images
 848         int ow = image.GetWidth();
 849         int oh = image.GetHeight();
 850
 851         if ( foundSize.x > 0 &&
 852              (ow != foundSize.x || oh != foundSize.y) )
 853         {
 854             int w = ow;
 855             if ( w > foundSize.x )
 856                 w = foundSize.x;
 857             int h = oh;
 858             if ( h > foundSize.y )
 859                 h = foundSize.y;
 860
 861             RescaleImage(image, w, h);
 862         }
 863
 864         return wxBitmap(image);
 865     }
 866
 867     return wxNullBitmap;
 868 }
 869 #else
 870 wxBitmap BitmapComboBoxWidgetsPage::LoadBitmap(const wxString& WXUNUSED(filepath))
 871 {
 872     return wxNullBitmap;
 873 }
 874 #endif
 875
 876 wxBitmap BitmapComboBoxWidgetsPage::QueryBitmap(wxString* pStr)
 877 {
 878     wxString filepath = wxLoadFileSelector(wxT("image"),
 879                                        wxEmptyString,
 880                                        wxEmptyString,
 881                                        this);
 882
 883     wxBitmap bitmap;
 884
 885     ::wxSetCursor( *wxHOURGLASS_CURSOR );
 886
 887     if ( filepath.length() )
 888     {
 889         if ( pStr )
 890         {
 891             *pStr = wxFileName(filepath).GetName();
 892         }
 893
 894         bitmap = LoadBitmap(filepath);
 895     }
 896
 897     if (bitmap.IsOk())
 898     {
 899         wxLogDebug(wxT("%i, %i"),bitmap.GetWidth(), bitmap.GetHeight());
 900     }
 901
 902     ::wxSetCursor( *wxSTANDARD_CURSOR );
 903
 904     return bitmap;
 905 }
 906
 907 wxBitmap BitmapComboBoxWidgetsPage::CreateBitmap(const wxColour& colour)
 908 {
 909     const int w = 10,
 910               h = 10;
 911
 912     wxMemoryDC dc;
 913     wxBitmap bmp(w, h);
 914     dc.SelectObject(bmp);
 915
 916     // Draw transparent background
 917     wxColour magic(255, 0, 255);
 918     wxBrush magicBrush(magic);
 919     dc.SetBrush(magicBrush);
 920     dc.SetPen(*wxTRANSPARENT_PEN);
 921     dc.DrawRectangle(0, 0, w, h);
 922
 923     // Draw image content
 924     dc.SetBrush(wxBrush(colour));
 925     dc.DrawCircle(h/2, h/2+1, h/2);
 926
 927     dc.SelectObject(wxNullBitmap);
 928
 929     // Finalize transparency with a mask
 930     wxMask *mask = new wxMask(bmp, magic);
 931     bmp.SetMask(mask);
 932
 933     return bmp;
 934 }
 935
 936 void BitmapComboBoxWidgetsPage::OnDropDown(wxCommandEvent& WXUNUSED(event))
 937 {
 938     wxLogMessage(wxT("Combobox dropped down"));
 939 }
 940
 941 void BitmapComboBoxWidgetsPage::OnCloseUp(wxCommandEvent& WXUNUSED(event))
 942 {
 943     wxLogMessage(wxT("Combobox closed up"));
 944 }
 945
 946 #endif // wxUSE_BITMAPCOMBOBOX