samples/widgets/slider.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Program:     wxWidgets Widgets Sample
   3 // Name:        slider.cpp
   4 // Purpose:     Part of the widgets sample showing wxSlider
   5 // Author:      Vadim Zeitlin
   6 // Created:     16.04.01
   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 #if wxUSE_SLIDER
  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/radiobox.h"
  37     #include "wx/slider.h"
  38     #include "wx/statbox.h"
  39     #include "wx/textctrl.h"
  40 #endif
  41
  42 #if wxUSE_TOOLTIPS
  43     #include "wx/tooltip.h"
  44 #endif
  45
  46 #include "wx/sizer.h"
  47
  48 #include "widgets.h"
  49
  50 #include "icons/slider.xpm"
  51
  52 // ----------------------------------------------------------------------------
  53 // constants
  54 // ----------------------------------------------------------------------------
  55
  56 // control ids
  57 enum
  58 {
  59     SliderPage_Reset = wxID_HIGHEST,
  60     SliderPage_Clear,
  61     SliderPage_SetValue,
  62     SliderPage_SetMinAndMax,
  63     SliderPage_SetLineSize,
  64     SliderPage_SetPageSize,
  65     SliderPage_SetTickFreq,
  66     SliderPage_SetThumbLen,
  67     SliderPage_CurValueText,
  68     SliderPage_ValueText,
  69     SliderPage_MinText,
  70     SliderPage_MaxText,
  71     SliderPage_LineSizeText,
  72     SliderPage_PageSizeText,
  73     SliderPage_TickFreqText,
  74     SliderPage_ThumbLenText,
  75     SliderPage_RadioSides,
  76     SliderPage_BothSides,
  77     SliderPage_Slider
  78 };
  79
  80 // sides radiobox values
  81 enum
  82 {
  83     SliderTicks_None,
  84     SliderTicks_Top,
  85     SliderTicks_Bottom,
  86     SliderTicks_Left,
  87     SliderTicks_Right
  88 };
  89
  90 // ----------------------------------------------------------------------------
  91 // SliderWidgetsPage
  92 // ----------------------------------------------------------------------------
  93
  94 class SliderWidgetsPage : public WidgetsPage
  95 {
  96 public:
  97     SliderWidgetsPage(WidgetsBookCtrl *book, wxImageList *imaglist);
  98     virtual ~SliderWidgetsPage(){};
  99
 100     virtual wxControl *GetWidget() const { return m_slider; }
 101     virtual void RecreateWidget() { CreateSlider(); }
 102
 103     // lazy creation of the content
 104     virtual void CreateContent();
 105
 106 protected:
 107     // event handlers
 108     void OnButtonReset(wxCommandEvent& event);
 109     void OnButtonClear(wxCommandEvent& event);
 110     void OnButtonSetValue(wxCommandEvent& event);
 111     void OnButtonSetMinAndMax(wxCommandEvent& event);
 112     void OnButtonSetLineSize(wxCommandEvent& event);
 113     void OnButtonSetPageSize(wxCommandEvent& event);
 114     void OnButtonSetTickFreq(wxCommandEvent& event);
 115     void OnButtonSetThumbLen(wxCommandEvent& event);
 116
 117     void OnCheckOrRadioBox(wxCommandEvent& event);
 118
 119     void OnSlider(wxScrollEvent& event);
 120
 121     void OnUpdateUIValueButton(wxUpdateUIEvent& event);
 122     void OnUpdateUIMinMaxButton(wxUpdateUIEvent& event);
 123     void OnUpdateUILineSize(wxUpdateUIEvent& event);
 124     void OnUpdateUIPageSize(wxUpdateUIEvent& event);
 125     void OnUpdateUITickFreq(wxUpdateUIEvent& event);
 126     void OnUpdateUIThumbLen(wxUpdateUIEvent& event);
 127     void OnUpdateUIRadioSides(wxUpdateUIEvent& event);
 128     void OnUpdateUIBothSides(wxUpdateUIEvent& event);
 129
 130     void OnUpdateUIResetButton(wxUpdateUIEvent& event);
 131
 132     void OnUpdateUICurValueText(wxUpdateUIEvent& event);
 133
 134     // reset the slider parameters
 135     void Reset();
 136
 137     // (re)create the slider
 138     void CreateSlider();
 139
 140     // set the line size from the text field value
 141     void DoSetLineSize();
 142
 143     // set the page size from the text field value
 144     void DoSetPageSize();
 145
 146     // set the tick frequency from the text field value
 147     void DoSetTickFreq();
 148
 149     // set the thumb len from the text field value
 150     void DoSetThumbLen();
 151
 152     // is this slider value in range?
 153     bool IsValidValue(int val) const
 154         { return (val >= m_min) && (val <= m_max); }
 155
 156     // the slider range
 157     int m_min, m_max;
 158
 159     // the controls
 160     // ------------
 161
 162     // the check/radio boxes for styles
 163     wxCheckBox *m_chkMinMaxLabels,
 164                *m_chkValueLabel,
 165                *m_chkInverse,
 166                *m_chkTicks,
 167                *m_chkBothSides;
 168
 169     wxRadioBox *m_radioSides;
 170
 171     // the slider itself and the sizer it is in
 172     wxSlider *m_slider;
 173     wxSizer *m_sizerSlider;
 174
 175     // the text entries for set value/range
 176     wxTextCtrl *m_textValue,
 177                *m_textMin,
 178                *m_textMax,
 179                *m_textLineSize,
 180                *m_textPageSize,
 181                *m_textTickFreq,
 182                *m_textThumbLen;
 183
 184 private:
 185     DECLARE_EVENT_TABLE()
 186     DECLARE_WIDGETS_PAGE(SliderWidgetsPage)
 187 };
 188
 189 // ----------------------------------------------------------------------------
 190 // event tables
 191 // ----------------------------------------------------------------------------
 192
 193 BEGIN_EVENT_TABLE(SliderWidgetsPage, WidgetsPage)
 194     EVT_BUTTON(SliderPage_Reset, SliderWidgetsPage::OnButtonReset)
 195     EVT_BUTTON(SliderPage_SetValue, SliderWidgetsPage::OnButtonSetValue)
 196     EVT_BUTTON(SliderPage_SetMinAndMax, SliderWidgetsPage::OnButtonSetMinAndMax)
 197     EVT_BUTTON(SliderPage_SetLineSize, SliderWidgetsPage::OnButtonSetLineSize)
 198     EVT_BUTTON(SliderPage_SetPageSize, SliderWidgetsPage::OnButtonSetPageSize)
 199     EVT_BUTTON(SliderPage_SetTickFreq, SliderWidgetsPage::OnButtonSetTickFreq)
 200     EVT_BUTTON(SliderPage_SetThumbLen, SliderWidgetsPage::OnButtonSetThumbLen)
 201
 202     EVT_UPDATE_UI(SliderPage_SetValue, SliderWidgetsPage::OnUpdateUIValueButton)
 203     EVT_UPDATE_UI(SliderPage_SetMinAndMax, SliderWidgetsPage::OnUpdateUIMinMaxButton)
 204     EVT_UPDATE_UI(SliderPage_SetLineSize, SliderWidgetsPage::OnUpdateUILineSize)
 205     EVT_UPDATE_UI(SliderPage_SetPageSize, SliderWidgetsPage::OnUpdateUIPageSize)
 206     EVT_UPDATE_UI(SliderPage_SetTickFreq, SliderWidgetsPage::OnUpdateUITickFreq)
 207     EVT_UPDATE_UI(SliderPage_SetThumbLen, SliderWidgetsPage::OnUpdateUIThumbLen)
 208     EVT_UPDATE_UI(SliderPage_RadioSides, SliderWidgetsPage::OnUpdateUIRadioSides)
 209     EVT_UPDATE_UI(SliderPage_BothSides, SliderWidgetsPage::OnUpdateUIBothSides)
 210
 211     EVT_UPDATE_UI(SliderPage_Reset, SliderWidgetsPage::OnUpdateUIResetButton)
 212
 213     EVT_UPDATE_UI(SliderPage_CurValueText, SliderWidgetsPage::OnUpdateUICurValueText)
 214
 215     EVT_COMMAND_SCROLL(SliderPage_Slider, SliderWidgetsPage::OnSlider)
 216
 217     EVT_CHECKBOX(wxID_ANY, SliderWidgetsPage::OnCheckOrRadioBox)
 218     EVT_RADIOBOX(wxID_ANY, SliderWidgetsPage::OnCheckOrRadioBox)
 219 END_EVENT_TABLE()
 220
 221 // ============================================================================
 222 // implementation
 223 // ============================================================================
 224
 225 #if defined(__WXUNIVERSAL__)
 226     #define FAMILY_CTRLS UNIVERSAL_CTRLS
 227 #else
 228     #define FAMILY_CTRLS NATIVE_CTRLS
 229 #endif
 230
 231 IMPLEMENT_WIDGETS_PAGE(SliderWidgetsPage, wxT("Slider"), FAMILY_CTRLS );
 232
 233 SliderWidgetsPage::SliderWidgetsPage(WidgetsBookCtrl *book,
 234                                      wxImageList *imaglist)
 235                   : WidgetsPage(book, imaglist, slider_xpm)
 236 {
 237     // init everything
 238     m_min = 0;
 239     m_max = 100;
 240
 241     m_chkInverse =
 242     m_chkTicks =
 243     m_chkMinMaxLabels =
 244     m_chkValueLabel =
 245     m_chkBothSides = (wxCheckBox *)NULL;
 246
 247     m_radioSides = (wxRadioBox *)NULL;
 248
 249     m_slider = (wxSlider *)NULL;
 250     m_sizerSlider = (wxSizer *)NULL;
 251 }
 252
 253 void SliderWidgetsPage::CreateContent()
 254 {
 255     wxSizer *sizerTop = new wxBoxSizer(wxHORIZONTAL);
 256
 257     // left pane
 258     wxStaticBox *box = new wxStaticBox(this, wxID_ANY, wxT("&Set style"));
 259     wxSizer *sizerLeft = new wxStaticBoxSizer(box, wxVERTICAL);
 260
 261     m_chkInverse = CreateCheckBoxAndAddToSizer(sizerLeft, wxT("&Inverse"));
 262     m_chkTicks = CreateCheckBoxAndAddToSizer(sizerLeft, wxT("Show &ticks"));
 263     m_chkMinMaxLabels = CreateCheckBoxAndAddToSizer(sizerLeft, wxT("Show min/max &labels"));
 264     m_chkValueLabel = CreateCheckBoxAndAddToSizer(sizerLeft, wxT("Show &value label"));
 265     static const wxString sides[] =
 266     {
 267         wxT("default"),
 268         wxT("top"),
 269         wxT("bottom"),
 270         wxT("left"),
 271         wxT("right"),
 272     };
 273     m_radioSides = new wxRadioBox(this, SliderPage_RadioSides, wxT("&Label position"),
 274                                  wxDefaultPosition, wxDefaultSize,
 275                                  WXSIZEOF(sides), sides,
 276                                  1, wxRA_SPECIFY_COLS);
 277     sizerLeft->Add(m_radioSides, 0, wxGROW | wxALL, 5);
 278     m_chkBothSides = CreateCheckBoxAndAddToSizer
 279                      (sizerLeft, wxT("&Both sides"), SliderPage_BothSides);
 280 #if wxUSE_TOOLTIPS
 281     m_chkBothSides->SetToolTip( wxT("\"Both sides\" is only supported \nin Win95 and Universal") );
 282 #endif // wxUSE_TOOLTIPS
 283
 284     sizerLeft->Add(5, 5, 0, wxGROW | wxALL, 5); // spacer
 285
 286     wxButton *btn = new wxButton(this, SliderPage_Reset, wxT("&Reset"));
 287     sizerLeft->Add(btn, 0, wxALIGN_CENTRE_HORIZONTAL | wxALL, 15);
 288
 289     // middle pane
 290     wxStaticBox *box2 = new wxStaticBox(this, wxID_ANY, wxT("&Change slider value"));
 291     wxSizer *sizerMiddle = new wxStaticBoxSizer(box2, wxVERTICAL);
 292
 293     wxTextCtrl *text;
 294     wxSizer *sizerRow = CreateSizerWithTextAndLabel(wxT("Current value"),
 295                                                     SliderPage_CurValueText,
 296                                                     &text);
 297     text->SetEditable(false);
 298
 299     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 300
 301     sizerRow = CreateSizerWithTextAndButton(SliderPage_SetValue,
 302                                             wxT("Set &value"),
 303                                             SliderPage_ValueText,
 304                                             &m_textValue);
 305     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 306
 307     sizerRow = CreateSizerWithTextAndButton(SliderPage_SetMinAndMax,
 308                                             wxT("&Min and max"),
 309                                             SliderPage_MinText,
 310                                             &m_textMin);
 311
 312     m_textMax = new wxTextCtrl(this, SliderPage_MaxText, wxEmptyString);
 313     sizerRow->Add(m_textMax, 1, wxLEFT | wxALIGN_CENTRE_VERTICAL, 5);
 314
 315     m_textMin->SetValue( wxString::Format(wxT("%d"), m_min) );
 316     m_textMax->SetValue( wxString::Format(wxT("%d"), m_max) );
 317
 318     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 319
 320     sizerRow = CreateSizerWithTextAndButton(SliderPage_SetLineSize,
 321                                             wxT("Li&ne size"),
 322                                             SliderPage_LineSizeText,
 323                                             &m_textLineSize);
 324
 325     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 326
 327     sizerRow = CreateSizerWithTextAndButton(SliderPage_SetPageSize,
 328                                             wxT("P&age size"),
 329                                             SliderPage_PageSizeText,
 330                                             &m_textPageSize);
 331
 332     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 333
 334     sizerRow = CreateSizerWithTextAndButton(SliderPage_SetTickFreq,
 335                                             wxT("Tick &frequency"),
 336                                             SliderPage_TickFreqText,
 337                                             &m_textTickFreq);
 338
 339     m_textTickFreq->SetValue(wxT("10"));
 340
 341     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 342
 343     sizerRow = CreateSizerWithTextAndButton(SliderPage_SetThumbLen,
 344                                             wxT("Thumb &length"),
 345                                             SliderPage_ThumbLenText,
 346                                             &m_textThumbLen);
 347
 348     sizerMiddle->Add(sizerRow, 0, wxALL | wxGROW, 5);
 349
 350     // right pane
 351     wxSizer *sizerRight = new wxBoxSizer(wxHORIZONTAL);
 352     sizerRight->SetMinSize(150, 40);
 353     m_sizerSlider = sizerRight; // save it to modify it later
 354
 355     Reset();
 356     CreateSlider();
 357
 358     m_textLineSize->SetValue(wxString::Format(wxT("%d"), m_slider->GetLineSize()));
 359     m_textPageSize->SetValue(wxString::Format(wxT("%d"), m_slider->GetPageSize()));
 360
 361     // the 3 panes panes compose the window
 362     sizerTop->Add(sizerLeft, 0, wxGROW | (wxALL & ~wxLEFT), 10);
 363     sizerTop->Add(sizerMiddle, 0, wxGROW | wxALL, 10);
 364     sizerTop->Add(sizerRight, 1, wxGROW | (wxALL & ~wxRIGHT), 10);
 365
 366     // final initializations
 367     SetSizer(sizerTop);
 368 }
 369
 370 // ----------------------------------------------------------------------------
 371 // operations
 372 // ----------------------------------------------------------------------------
 373
 374 void SliderWidgetsPage::Reset()
 375 {
 376     m_chkInverse->SetValue(false);
 377     m_chkTicks->SetValue(true);
 378     m_chkValueLabel->SetValue(true);
 379     m_chkMinMaxLabels->SetValue(true);
 380     m_chkBothSides->SetValue(false);
 381
 382     m_radioSides->SetSelection(SliderTicks_None);
 383 }
 384
 385 void SliderWidgetsPage::CreateSlider()
 386 {
 387     int flags = ms_defaultFlags;
 388
 389     if ( m_chkInverse->GetValue() )
 390     {
 391         flags |= wxSL_INVERSE;
 392     }
 393
 394     if ( m_chkMinMaxLabels->GetValue() )
 395     {
 396         flags |= wxSL_MIN_MAX_LABELS;
 397     }
 398
 399     if ( m_chkValueLabel->GetValue() )
 400     {
 401         flags |= wxSL_VALUE_LABEL;
 402     }
 403
 404     if ( m_chkTicks->GetValue() )
 405     {
 406         flags |= wxSL_AUTOTICKS;
 407     }
 408
 409     // notice that the style names refer to the _ticks_ positions while we want
 410     // to allow the user to select the label(s) positions and the labels are on
 411     // the opposite side from the ticks, hence the apparent reversal below
 412     switch ( m_radioSides->GetSelection() )
 413     {
 414         case SliderTicks_None:
 415             break;
 416
 417         case SliderTicks_Top:
 418             flags |= wxSL_BOTTOM;
 419             break;
 420
 421         case SliderTicks_Left:
 422             flags |= wxSL_RIGHT | wxSL_VERTICAL;
 423             break;
 424
 425         case SliderTicks_Bottom:
 426             flags |= wxSL_TOP;
 427             break;
 428
 429         case SliderTicks_Right:
 430             flags |= wxSL_LEFT | wxSL_VERTICAL;
 431             break;
 432
 433         default:
 434             wxFAIL_MSG(wxT("unexpected radiobox selection"));
 435             // fall through
 436     }
 437
 438     if ( m_chkBothSides->GetValue() )
 439     {
 440         flags |= wxSL_BOTH;
 441     }
 442
 443     int val = m_min;
 444     if ( m_slider )
 445     {
 446         int valOld = m_slider->GetValue();
 447         if ( !IsValidValue(valOld) )
 448         {
 449             val = valOld;
 450         }
 451
 452         m_sizerSlider->Detach( m_slider );
 453
 454         if ( m_sizerSlider->GetChildren().GetCount() )
 455         {
 456             // we have 2 spacers, remove them too
 457             m_sizerSlider->Remove( 0 );
 458             m_sizerSlider->Remove( 0 );
 459         }
 460
 461         delete m_slider;
 462     }
 463
 464     m_slider = new wxSlider(this, SliderPage_Slider,
 465                             val, m_min, m_max,
 466                             wxDefaultPosition, wxDefaultSize,
 467                             flags);
 468
 469     if ( m_slider->HasFlag(wxSL_VERTICAL) )
 470     {
 471         m_sizerSlider->Add(0, 0, 1);
 472         m_sizerSlider->Add(m_slider, 0, wxGROW | wxALL, 5);
 473         m_sizerSlider->Add(0, 0, 1);
 474     }
 475     else
 476     {
 477         m_sizerSlider->Add(m_slider, 1, wxCENTRE | wxALL, 5);
 478     }
 479
 480     if ( m_chkTicks->GetValue() )
 481     {
 482         DoSetTickFreq();
 483     }
 484
 485     m_sizerSlider->Layout();
 486 }
 487
 488 void SliderWidgetsPage::DoSetLineSize()
 489 {
 490     long lineSize;
 491     if ( !m_textLineSize->GetValue().ToLong(&lineSize) )
 492     {
 493         wxLogWarning(wxT("Invalid slider line size"));
 494
 495         return;
 496     }
 497
 498     m_slider->SetLineSize(lineSize);
 499
 500     if ( m_slider->GetLineSize() != lineSize )
 501     {
 502         wxLogWarning(wxT("Invalid line size in slider."));
 503     }
 504 }
 505
 506 void SliderWidgetsPage::DoSetPageSize()
 507 {
 508     long pageSize;
 509     if ( !m_textPageSize->GetValue().ToLong(&pageSize) )
 510     {
 511         wxLogWarning(wxT("Invalid slider page size"));
 512
 513         return;
 514     }
 515
 516     m_slider->SetPageSize(pageSize);
 517
 518     if ( m_slider->GetPageSize() != pageSize )
 519     {
 520         wxLogWarning(wxT("Invalid page size in slider."));
 521     }
 522 }
 523
 524 void SliderWidgetsPage::DoSetTickFreq()
 525 {
 526     long freq;
 527     if ( !m_textTickFreq->GetValue().ToLong(&freq) )
 528     {
 529         wxLogWarning(wxT("Invalid slider tick frequency"));
 530
 531         return;
 532     }
 533
 534     m_slider->SetTickFreq(freq, 0 /* unused */);
 535 }
 536
 537 void SliderWidgetsPage::DoSetThumbLen()
 538 {
 539     long len;
 540     if ( !m_textThumbLen->GetValue().ToLong(&len) )
 541     {
 542         wxLogWarning(wxT("Invalid slider thumb length"));
 543
 544         return;
 545     }
 546
 547     m_slider->SetThumbLength(len);
 548 }
 549
 550 // ----------------------------------------------------------------------------
 551 // event handlers
 552 // ----------------------------------------------------------------------------
 553
 554 void SliderWidgetsPage::OnButtonReset(wxCommandEvent& WXUNUSED(event))
 555 {
 556     Reset();
 557
 558     CreateSlider();
 559 }
 560
 561 void SliderWidgetsPage::OnButtonSetLineSize(wxCommandEvent& WXUNUSED(event))
 562 {
 563     DoSetLineSize();
 564 }
 565
 566 void SliderWidgetsPage::OnButtonSetPageSize(wxCommandEvent& WXUNUSED(event))
 567 {
 568     DoSetPageSize();
 569 }
 570
 571 void SliderWidgetsPage::OnButtonSetTickFreq(wxCommandEvent& WXUNUSED(event))
 572 {
 573     DoSetTickFreq();
 574 }
 575
 576 void SliderWidgetsPage::OnButtonSetThumbLen(wxCommandEvent& WXUNUSED(event))
 577 {
 578     DoSetThumbLen();
 579 }
 580
 581 void SliderWidgetsPage::OnButtonSetMinAndMax(wxCommandEvent& WXUNUSED(event))
 582 {
 583     long minNew,
 584          maxNew = 0; // init to suppress compiler warning
 585     if ( !m_textMin->GetValue().ToLong(&minNew) ||
 586          !m_textMax->GetValue().ToLong(&maxNew) ||
 587          minNew >= maxNew )
 588     {
 589         wxLogWarning(wxT("Invalid min/max values for the slider."));
 590
 591         return;
 592     }
 593
 594     m_min = minNew;
 595     m_max = maxNew;
 596
 597     m_slider->SetRange(minNew, maxNew);
 598
 599     if ( m_slider->GetMin() != m_min ||
 600          m_slider->GetMax() != m_max )
 601     {
 602         wxLogWarning(wxT("Invalid range in slider."));
 603     }
 604 }
 605
 606 void SliderWidgetsPage::OnButtonSetValue(wxCommandEvent& WXUNUSED(event))
 607 {
 608     long val;
 609     if ( !m_textValue->GetValue().ToLong(&val) || !IsValidValue(val) )
 610     {
 611         wxLogWarning(wxT("Invalid slider value."));
 612
 613         return;
 614     }
 615
 616     m_slider->SetValue(val);
 617 }
 618
 619 void SliderWidgetsPage::OnUpdateUIValueButton(wxUpdateUIEvent& event)
 620 {
 621     long val;
 622     event.Enable( m_textValue->GetValue().ToLong(&val) && IsValidValue(val) );
 623 }
 624
 625 void SliderWidgetsPage::OnUpdateUILineSize(wxUpdateUIEvent& event)
 626 {
 627     long lineSize;
 628     event.Enable( m_textLineSize->GetValue().ToLong(&lineSize) &&
 629             (lineSize > 0) && (lineSize <= m_max - m_min) );
 630 }
 631
 632 void SliderWidgetsPage::OnUpdateUIPageSize(wxUpdateUIEvent& event)
 633 {
 634     long pageSize;
 635     event.Enable( m_textPageSize->GetValue().ToLong(&pageSize) &&
 636             (pageSize > 0) && (pageSize <= m_max - m_min) );
 637 }
 638
 639 void SliderWidgetsPage::OnUpdateUITickFreq(wxUpdateUIEvent& event)
 640 {
 641     long freq;
 642     event.Enable( m_chkTicks->GetValue() &&
 643                   m_textTickFreq->GetValue().ToLong(&freq) &&
 644                   (freq > 0) && (freq <= m_max - m_min) );
 645 }
 646
 647 void SliderWidgetsPage::OnUpdateUIThumbLen(wxUpdateUIEvent& event)
 648 {
 649     long val;
 650     event.Enable( m_textThumbLen->GetValue().ToLong(&val));
 651 }
 652
 653 void SliderWidgetsPage::OnUpdateUIMinMaxButton(wxUpdateUIEvent& event)
 654 {
 655     long mn, mx;
 656     event.Enable( m_textMin->GetValue().ToLong(&mn) &&
 657                   m_textMax->GetValue().ToLong(&mx) &&
 658                   mn < mx);
 659 }
 660
 661 void SliderWidgetsPage::OnUpdateUIResetButton(wxUpdateUIEvent& event)
 662 {
 663     event.Enable( m_chkInverse->GetValue() ||
 664                   !m_chkTicks->GetValue() ||
 665                   !m_chkValueLabel->GetValue() ||
 666                   !m_chkMinMaxLabels->GetValue() ||
 667                   m_chkBothSides->GetValue() ||
 668                   m_radioSides->GetSelection() != SliderTicks_None );
 669 }
 670
 671 void SliderWidgetsPage::OnCheckOrRadioBox(wxCommandEvent& WXUNUSED(event))
 672 {
 673     CreateSlider();
 674 }
 675
 676 void SliderWidgetsPage::OnUpdateUICurValueText(wxUpdateUIEvent& event)
 677 {
 678     event.SetText( wxString::Format(wxT("%d"), m_slider->GetValue()) );
 679 }
 680
 681 void SliderWidgetsPage::OnUpdateUIRadioSides(wxUpdateUIEvent& event)
 682 {
 683     event.Enable( m_chkValueLabel->GetValue() || m_chkTicks->GetValue() );
 684 }
 685
 686 void SliderWidgetsPage::OnUpdateUIBothSides(wxUpdateUIEvent& event)
 687 {
 688 #if defined(__WXMSW__) || defined(__WXUNIVERSAL__)
 689     event.Enable( m_chkTicks->GetValue() );
 690 #else
 691     event.Enable( false );
 692 #endif // defined(__WXMSW__) || defined(__WXUNIVERSAL__)
 693 }
 694
 695 void SliderWidgetsPage::OnSlider(wxScrollEvent& event)
 696 {
 697     wxASSERT_MSG( event.GetInt() == m_slider->GetValue(),
 698                   wxT("slider value should be the same") );
 699
 700     wxEventType eventType = event.GetEventType();
 701
 702     /*
 703         This array takes the EXACT order of the declarations in
 704         include/wx/event.h
 705         (section "wxScrollBar and wxSlider event identifiers")
 706     */
 707     static const wxChar *eventNames[] =
 708     {
 709         wxT("wxEVT_SCROLL_TOP"),
 710         wxT("wxEVT_SCROLL_BOTTOM"),
 711         wxT("wxEVT_SCROLL_LINEUP"),
 712         wxT("wxEVT_SCROLL_LINEDOWN"),
 713         wxT("wxEVT_SCROLL_PAGEUP"),
 714         wxT("wxEVT_SCROLL_PAGEDOWN"),
 715         wxT("wxEVT_SCROLL_THUMBTRACK"),
 716         wxT("wxEVT_SCROLL_THUMBRELEASE"),
 717         wxT("wxEVT_SCROLL_CHANGED")
 718     };
 719
 720     int index = eventType - wxEVT_SCROLL_TOP;
 721
 722     /*
 723         If this assert is triggered, there is an unknown slider event which
 724         should be added to the above eventNames array.
 725     */
 726     wxASSERT_MSG(index >= 0 && (size_t)index < WXSIZEOF(eventNames),
 727                  wxT("Unknown slider event") );
 728
 729
 730     static int s_numSliderEvents = 0;
 731
 732     wxLogMessage(wxT("Slider event #%d: %s (pos = %d, int value = %d)"),
 733                  s_numSliderEvents++,
 734                  eventNames[index],
 735                  event.GetPosition(),
 736                  event.GetInt());
 737 }
 738
 739 #endif // wxUSE_SLIDER