src/msw/combo.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/combo.cpp
   3 // Purpose:     wxMSW wxComboCtrl
   4 // Author:      Jaakko Salli
   5 // Modified by:
   6 // Created:     Apr-30-2006
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2005 Jaakko Salli
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #include "wx/wxprec.h"
  21
  22 #ifdef __BORLANDC__
  23     #pragma hdrstop
  24 #endif
  25
  26 #if wxUSE_COMBOCTRL
  27
  28 #ifndef WX_PRECOMP
  29     #include "wx/log.h"
  30     #include "wx/combobox.h"
  31     #include "wx/dcclient.h"
  32     #include "wx/settings.h"
  33     #include "wx/dialog.h"
  34     #include "wx/stopwatch.h"
  35 #endif
  36
  37 #include "wx/dcbuffer.h"
  38 #include "wx/combo.h"
  39
  40 #include "wx/msw/registry.h"
  41 #if wxUSE_UXTHEME
  42 #include "wx/msw/uxtheme.h"
  43 #endif
  44 #include "wx/msw/dc.h"
  45
  46 // Change to #if 1 to include tmschema.h for easier testing of theme
  47 // parameters.
  48 #if 0
  49     #include <tmschema.h>
  50     #include <VSStyle.h>
  51 #else
  52     //----------------------------------
  53     #define EP_EDITTEXT         1
  54     #define ETS_NORMAL          1
  55     #define ETS_HOT             2
  56     #define ETS_SELECTED        3
  57     #define ETS_DISABLED        4
  58     #define ETS_FOCUSED         5
  59     #define ETS_READONLY        6
  60     #define ETS_ASSIST          7
  61     #define TMT_FILLCOLOR       3802
  62     #define TMT_TEXTCOLOR       3803
  63     #define TMT_BORDERCOLOR     3801
  64     #define TMT_EDGEFILLCOLOR   3808
  65     #define TMT_BGTYPE          4001
  66
  67     #define BT_IMAGEFILE        0
  68     #define BT_BORDERFILL       1
  69
  70     #define CP_DROPDOWNBUTTON           1
  71     #define CP_BACKGROUND               2 // This and above are Vista and later only
  72     #define CP_TRANSPARENTBACKGROUND    3
  73     #define CP_BORDER                   4
  74     #define CP_READONLY                 5
  75     #define CP_DROPDOWNBUTTONRIGHT      6
  76     #define CP_DROPDOWNBUTTONLEFT       7
  77     #define CP_CUEBANNER                8
  78
  79     #define CBXS_NORMAL                 1
  80     #define CBXS_HOT                    2
  81     #define CBXS_PRESSED                3
  82     #define CBXS_DISABLED               4
  83
  84     #define CBXSR_NORMAL                1
  85     #define CBXSR_HOT                   2
  86     #define CBXSR_PRESSED               3
  87     #define CBXSR_DISABLED              4
  88
  89     #define CBXSL_NORMAL                1
  90     #define CBXSL_HOT                   2
  91     #define CBXSL_PRESSED               3
  92     #define CBXSL_DISABLED              4
  93
  94     #define CBTBS_NORMAL                1
  95     #define CBTBS_HOT                   2
  96     #define CBTBS_DISABLED              3
  97     #define CBTBS_FOCUSED               4
  98
  99     #define CBB_NORMAL                  1
 100     #define CBB_HOT                     2
 101     #define CBB_FOCUSED                 3
 102     #define CBB_DISABLED                4
 103
 104     #define CBRO_NORMAL                 1
 105     #define CBRO_HOT                    2
 106     #define CBRO_PRESSED                3
 107     #define CBRO_DISABLED               4
 108
 109     #define CBCB_NORMAL                 1
 110     #define CBCB_HOT                    2
 111     #define CBCB_PRESSED                3
 112     #define CBCB_DISABLED               4
 113
 114 #endif
 115
 116
 117 #define NATIVE_TEXT_INDENT_XP       4
 118 #define NATIVE_TEXT_INDENT_CLASSIC  2
 119
 120 #define TEXTCTRLYADJUST_XP          3
 121 #define TEXTCTRLYADJUST_CLASSIC     3
 122
 123 #define COMBOBOX_ANIMATION_RESOLUTION   10
 124
 125 #define COMBOBOX_ANIMATION_DURATION     200  // In milliseconds
 126
 127 #define wxMSW_DESKTOP_USERPREFERENCESMASK_COMBOBOXANIM    (1<<2)
 128
 129
 130 // ============================================================================
 131 // implementation
 132 // ============================================================================
 133
 134
 135 BEGIN_EVENT_TABLE(wxComboCtrl, wxComboCtrlBase)
 136     EVT_PAINT(wxComboCtrl::OnPaintEvent)
 137     EVT_MOUSE_EVENTS(wxComboCtrl::OnMouseEvent)
 138 #if wxUSE_COMBOCTRL_POPUP_ANIMATION
 139     EVT_TIMER(wxID_ANY, wxComboCtrl::OnTimerEvent)
 140 #endif
 141 END_EVENT_TABLE()
 142
 143
 144 IMPLEMENT_DYNAMIC_CLASS(wxComboCtrl, wxComboCtrlBase)
 145
 146 void wxComboCtrl::Init()
 147 {
 148 }
 149
 150 bool wxComboCtrl::Create(wxWindow *parent,
 151                             wxWindowID id,
 152                             const wxString& value,
 153                             const wxPoint& pos,
 154                             const wxSize& size,
 155                             long style,
 156                             const wxValidator& validator,
 157                             const wxString& name)
 158 {
 159
 160     // Set border
 161     long border = style & wxBORDER_MASK;
 162
 163 #if wxUSE_UXTHEME
 164     wxUxThemeEngine* theme = wxUxThemeEngine::GetIfActive();
 165 #endif
 166
 167     if ( !border )
 168     {
 169 #if wxUSE_UXTHEME
 170         if ( theme )
 171         {
 172             // For XP, have 1-width custom border, for older version use sunken
 173             border = wxBORDER_NONE;
 174             m_widthCustomBorder = 1;
 175         }
 176         else
 177 #endif
 178             border = wxBORDER_SUNKEN;
 179
 180         style = (style & ~(wxBORDER_MASK)) | border;
 181     }
 182
 183     // create main window
 184     if ( !wxComboCtrlBase::Create(parent,
 185                            id,
 186                            value,
 187                            pos,
 188                            size,
 189                            style | wxFULL_REPAINT_ON_RESIZE,
 190                            validator,
 191                            name) )
 192         return false;
 193
 194 #if wxUSE_UXTHEME
 195     if ( theme )
 196     {
 197         if ( ::wxGetWinVersion() >= wxWinVersion_Vista )
 198             m_iFlags |= wxCC_BUTTON_STAYS_DOWN |wxCC_BUTTON_COVERS_BORDER;
 199     }
 200 #endif
 201
 202     if ( style & wxCC_STD_BUTTON )
 203         m_iFlags |= wxCC_POPUP_ON_MOUSE_UP;
 204
 205     // Create textctrl, if necessary
 206     CreateTextCtrl( wxNO_BORDER );
 207
 208     // Add keyboard input handlers for main control and textctrl
 209     InstallInputHandlers();
 210
 211     // Prepare background for double-buffering
 212     SetBackgroundStyle( wxBG_STYLE_CUSTOM );
 213
 214     // SetInitialSize should be called last
 215     SetInitialSize(size);
 216
 217     return true;
 218 }
 219
 220 wxComboCtrl::~wxComboCtrl()
 221 {
 222 }
 223
 224 void wxComboCtrl::OnResize()
 225 {
 226     //
 227     // Recalculates button and textctrl areas
 228
 229     int textCtrlYAdjust;
 230
 231 #if wxUSE_UXTHEME
 232     if ( wxUxThemeEngine::GetIfActive() )
 233     {
 234         textCtrlYAdjust = TEXTCTRLYADJUST_XP;
 235     }
 236     else
 237 #endif
 238     {
 239         textCtrlYAdjust = TEXTCTRLYADJUST_CLASSIC;
 240     }
 241
 242     // Technically Classic Windows style combo has more narrow button,
 243     // but the native renderer doesn't paint it well like that.
 244     int btnWidth = 17;
 245     CalculateAreas(btnWidth);
 246
 247     // Position textctrl using standard routine
 248     PositionTextCtrl(0, textCtrlYAdjust);
 249 }
 250
 251 // Draws non-XP GUI dotted line around the focus area
 252 static void wxMSWDrawFocusRect( wxDC& dc, const wxRect& rect )
 253 {
 254 #if !defined(__WXWINCE__)
 255     /*
 256     RECT mswRect;
 257     mswRect.left = rect.x;
 258     mswRect.top = rect.y;
 259     mswRect.right = rect.x + rect.width;
 260     mswRect.bottom = rect.y + rect.height;
 261     HDC hdc = (HDC) dc.GetHDC();
 262     SetMapMode(hdc,MM_TEXT); // Just in case...
 263     DrawFocusRect(hdc,&mswRect);
 264     */
 265     // FIXME: Use DrawFocusRect code above (currently it draws solid line
 266     //   for caption focus but works ok for other stuff).
 267     //   Also, this code below may not work in future wx versions, since
 268     //   it employs wxCAP_BUTT hack to have line of width 1.
 269     dc.SetLogicalFunction(wxINVERT);
 270
 271     wxPen pen(*wxBLACK, 1, wxPENSTYLE_DOT);
 272     pen.SetCap(wxCAP_BUTT);
 273     dc.SetPen(pen);
 274     dc.SetBrush(*wxTRANSPARENT_BRUSH);
 275
 276     dc.DrawRectangle(rect);
 277
 278     dc.SetLogicalFunction(wxCOPY);
 279 #else
 280     dc.SetLogicalFunction(wxINVERT);
 281
 282     dc.SetPen(wxPen(*wxBLACK,1,wxDOT));
 283     dc.SetBrush(*wxTRANSPARENT_BRUSH);
 284
 285     dc.DrawRectangle(rect);
 286
 287     dc.SetLogicalFunction(wxCOPY);
 288 #endif
 289 }
 290
 291 // draw focus background on area in a way typical on platform
 292 void
 293 wxComboCtrl::PrepareBackground( wxDC& dc, const wxRect& rect, int flags ) const
 294 {
 295 #if wxUSE_UXTHEME
 296     wxUxThemeHandle hTheme(this, L"COMBOBOX");
 297 #endif
 298
 299     wxSize sz = GetClientSize();
 300     bool isEnabled;
 301     bool doDrawFocusRect; // also selected
 302
 303     // For smaller size control (and for disabled background) use less spacing
 304     int focusSpacingX;
 305     int focusSpacingY;
 306
 307     if ( !(flags & wxCONTROL_ISSUBMENU) )
 308     {
 309         // Drawing control
 310         isEnabled = IsEnabled();
 311         doDrawFocusRect = ShouldDrawFocus();
 312
 313 #if wxUSE_UXTHEME
 314         // Windows-style: for smaller size control (and for disabled background) use less spacing
 315         if ( hTheme )
 316         {
 317             // WinXP  Theme
 318             focusSpacingX = isEnabled ? 2 : 1;
 319             focusSpacingY = sz.y > (GetCharHeight()+2) && isEnabled ? 2 : 1;
 320         }
 321         else
 322 #endif
 323         {
 324             // Classic Theme
 325             if ( isEnabled )
 326             {
 327                 focusSpacingX = 1;
 328                 focusSpacingY = 1;
 329             }
 330             else
 331             {
 332                 focusSpacingX = 0;
 333                 focusSpacingY = 0;
 334             }
 335         }
 336     }
 337     else
 338     {
 339         // Drawing a list item
 340         isEnabled = true; // they are never disabled
 341         doDrawFocusRect = flags & wxCONTROL_SELECTED ? true : false;
 342
 343         focusSpacingX = 0;
 344         focusSpacingY = 0;
 345     }
 346
 347     // Set the background sub-rectangle for selection, disabled etc
 348     wxRect selRect(rect);
 349     selRect.y += focusSpacingY;
 350     selRect.height -= (focusSpacingY*2);
 351
 352     int wcp = 0;
 353
 354     if ( !(flags & wxCONTROL_ISSUBMENU) )
 355         wcp += m_widthCustomPaint;
 356
 357     selRect.x += wcp + focusSpacingX;
 358     selRect.width -= wcp + (focusSpacingX*2);
 359
 360     //wxUxThemeEngine* theme = NULL;
 361     //if ( hTheme )
 362     //    theme = wxUxThemeEngine::GetIfActive();
 363
 364     wxColour fgCol;
 365     wxColour bgCol;
 366     bool doDrawDottedEdge = false;
 367     bool doDrawSelRect = true;
 368
 369     // TODO: doDrawDottedEdge = true when focus has arrived to control via tab.
 370     //       (and other cases which are not that apparent).
 371
 372     if ( isEnabled )
 373     {
 374         // If popup is hidden and this control is focused,
 375         // then draw the focus-indicator (selbgcolor background etc.).
 376         if ( doDrawFocusRect )
 377         {
 378             // NB: We can't really use XP visual styles to get TMT_TEXTCOLOR since
 379             //     it is not properly defined for combo boxes. Instead, they expect
 380             //     you to use DrawThemeText.
 381             //
 382             //    Here is, however, sample code how to get theme colours:
 383             //
 384             //    COLORREF cref;
 385             //    theme->GetThemeColor(hTheme,EP_EDITTEXT,ETS_NORMAL,TMT_TEXTCOLOR,&cref);
 386             //    dc.SetTextForeground( wxRGBToColour(cref) );
 387             if ( (m_iFlags & wxCC_FULL_BUTTON) && !(flags & wxCONTROL_ISSUBMENU) )
 388             {
 389                 // Vista style read-only combo
 390                 fgCol = GetForegroundColour();
 391                 bgCol = GetBackgroundColour();
 392                 doDrawSelRect = false;
 393                 doDrawDottedEdge = true;
 394             }
 395             else
 396             {
 397                 fgCol = wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHTTEXT);
 398                 bgCol = wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHT);
 399             }
 400         }
 401         else
 402         {
 403             fgCol = GetForegroundColour();
 404             bgCol = GetBackgroundColour();
 405             doDrawSelRect = false;
 406         }
 407     }
 408     else
 409     {
 410         fgCol = wxSystemSettings::GetColour(wxSYS_COLOUR_GRAYTEXT);
 411         bgCol = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
 412     }
 413
 414     dc.SetTextForeground(fgCol);
 415     dc.SetBrush(bgCol);
 416     if ( doDrawSelRect )
 417     {
 418         dc.SetPen(bgCol);
 419         dc.DrawRectangle(selRect);
 420     }
 421
 422     if ( doDrawDottedEdge )
 423         wxMSWDrawFocusRect(dc, selRect);
 424
 425     // Don't clip exactly to the selection rectangle so we can draw
 426     // to the non-selected area in front of it.
 427     wxRect clipRect(rect.x,rect.y,
 428                     (selRect.x+selRect.width)-rect.x-1,rect.height);
 429     dc.SetClippingRegion(clipRect);
 430 }
 431
 432 void wxComboCtrl::OnPaintEvent( wxPaintEvent& WXUNUSED(event) )
 433 {
 434     // TODO: Convert drawing in this function to Windows API Code
 435
 436     wxSize sz = GetClientSize();
 437     wxAutoBufferedPaintDC dc(this);
 438
 439     const wxRect& rectButton = m_btnArea;
 440     wxRect rectTextField = m_tcArea;
 441     wxColour bgCol = GetBackgroundColour();
 442
 443 #if wxUSE_UXTHEME
 444     const bool isEnabled = IsEnabled();
 445
 446     wxMSWDCImpl *impl = (wxMSWDCImpl*) dc.GetImpl();
 447     HDC hDc = GetHdcOf(*impl);
 448     HWND hWnd = GetHwndOf(this);
 449
 450     wxUxThemeEngine* theme = NULL;
 451     wxUxThemeHandle hTheme(this, L"COMBOBOX");
 452
 453     if ( hTheme )
 454         theme = wxUxThemeEngine::GetIfActive();
 455 #endif // wxUSE_UXTHEME
 456
 457     wxRect borderRect(0,0,sz.x,sz.y);
 458
 459     if ( m_iFlags & wxCC_IFLAG_BUTTON_OUTSIDE )
 460     {
 461         borderRect = m_tcArea;
 462         borderRect.Inflate(1);
 463     }
 464
 465     int drawButFlags = 0;
 466
 467 #if wxUSE_UXTHEME
 468     if ( hTheme )
 469     {
 470         const bool useVistaComboBox = ::wxGetWinVersion() >= wxWinVersion_Vista;
 471
 472         RECT rFull;
 473         wxCopyRectToRECT(borderRect, rFull);
 474
 475         RECT rButton;
 476         wxCopyRectToRECT(rectButton, rButton);
 477
 478         RECT rBorder;
 479         wxCopyRectToRECT(borderRect, rBorder);
 480
 481         bool isNonStdButton = (m_iFlags & wxCC_IFLAG_BUTTON_OUTSIDE) ||
 482                               (m_iFlags & wxCC_IFLAG_HAS_NONSTANDARD_BUTTON);
 483
 484         //
 485         // Get some states for themed drawing
 486         int butState;
 487
 488         if ( !isEnabled )
 489         {
 490             butState = CBXS_DISABLED;
 491         }
 492         // Vista will display the drop-button as depressed always
 493         // when the popup window is visilbe
 494         else if ( (m_btnState & wxCONTROL_PRESSED) ||
 495                   (useVistaComboBox && !IsPopupWindowState(Hidden)) )
 496         {
 497             butState = CBXS_PRESSED;
 498         }
 499         else if ( m_btnState & wxCONTROL_CURRENT )
 500         {
 501             butState = CBXS_HOT;
 502         }
 503         else
 504         {
 505             butState = CBXS_NORMAL;
 506         }
 507
 508         int comboBoxPart = 0;  // For XP, use the 'default' part
 509         RECT* rUseForBg = &rBorder;
 510
 511         bool drawFullButton = false;
 512         int bgState = butState;
 513         const bool isFocused = (FindFocus() == GetMainWindowOfCompositeControl()) ? true : false;
 514
 515         if ( useVistaComboBox )
 516         {
 517             // FIXME: Either SetBackgroundColour or GetBackgroundColour
 518             //        doesn't work under Vista, so here's a temporary
 519             //        workaround.
 520             bgCol = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
 521
 522             // Draw the entire control as a single button?
 523             if ( !isNonStdButton )
 524             {
 525                 if ( HasFlag(wxCB_READONLY) )
 526                     drawFullButton = true;
 527             }
 528
 529             if ( drawFullButton )
 530             {
 531                 comboBoxPart = CP_READONLY;
 532                 rUseForBg = &rFull;
 533
 534                 // It should be safe enough to update this flag here.
 535                 m_iFlags |= wxCC_FULL_BUTTON;
 536             }
 537             else
 538             {
 539                 comboBoxPart = CP_BORDER;
 540                 m_iFlags &= ~wxCC_FULL_BUTTON;
 541
 542                 if ( isFocused )
 543                     bgState = CBB_FOCUSED;
 544                 else
 545                     bgState = CBB_NORMAL;
 546             }
 547         }
 548
 549         //
 550         // Draw parent's background, if necessary
 551         RECT* rUseForTb = NULL;
 552
 553         if ( theme->IsThemeBackgroundPartiallyTransparent( hTheme, comboBoxPart, bgState ) )
 554             rUseForTb = &rFull;
 555         else if ( m_iFlags & wxCC_IFLAG_BUTTON_OUTSIDE )
 556             rUseForTb = &rButton;
 557
 558         if ( rUseForTb )
 559             theme->DrawThemeParentBackground( hWnd, hDc, rUseForTb );
 560
 561         //
 562         // Draw the control background (including the border)
 563         if ( m_widthCustomBorder > 0 )
 564         {
 565             theme->DrawThemeBackground( hTheme, hDc, comboBoxPart, bgState, rUseForBg, NULL );
 566         }
 567         else
 568         {
 569             // No border. We can't use theme, since it cannot be relied on
 570             // to deliver borderless drawing, even with DrawThemeBackgroundEx.
 571             dc.SetBrush(bgCol);
 572             dc.SetPen(bgCol);
 573             dc.DrawRectangle(borderRect);
 574         }
 575
 576         //
 577         // Draw the drop-button
 578         if ( !isNonStdButton )
 579         {
 580             drawButFlags = Button_BitmapOnly;
 581
 582             int butPart = CP_DROPDOWNBUTTON;
 583
 584             if ( useVistaComboBox )
 585             {
 586                 if ( drawFullButton )
 587                 {
 588                     // We need to alter the button style slightly before
 589                     // drawing the actual button (but it was good above
 590                     // when background etc was done).
 591                     if ( butState == CBXS_HOT || butState == CBXS_PRESSED )
 592                         butState = CBXS_NORMAL;
 593                 }
 594
 595                 if ( m_btnSide == wxRIGHT )
 596                     butPart = CP_DROPDOWNBUTTONRIGHT;
 597                 else
 598                     butPart = CP_DROPDOWNBUTTONLEFT;
 599
 600             }
 601             theme->DrawThemeBackground( hTheme, hDc, butPart, butState, &rButton, NULL );
 602         }
 603         else if ( useVistaComboBox &&
 604                   (m_iFlags & wxCC_IFLAG_BUTTON_OUTSIDE) )
 605         {
 606             // We'll do this, because DrawThemeParentBackground
 607             // doesn't seem to be reliable on Vista.
 608             drawButFlags |= Button_PaintBackground;
 609         }
 610     }
 611     else
 612 #endif
 613     {
 614         // Windows 2000 and earlier
 615         drawButFlags = Button_PaintBackground;
 616
 617         dc.SetBrush(bgCol);
 618         dc.SetPen(bgCol);
 619         dc.DrawRectangle(borderRect);
 620     }
 621
 622     // Button rendering (may only do the bitmap on button, depending on the flags)
 623     DrawButton( dc, rectButton, drawButFlags );
 624
 625     // Paint required portion of the custom image on the control
 626     if ( (!m_text || m_widthCustomPaint) )
 627     {
 628         wxASSERT( m_widthCustomPaint >= 0 );
 629
 630         // this is intentionally here to allow drawed rectangle's
 631         // right edge to be hidden
 632         if ( m_text )
 633             rectTextField.width = m_widthCustomPaint;
 634
 635         dc.SetFont( GetFont() );
 636
 637         dc.SetClippingRegion(rectTextField);
 638         if ( m_popupInterface )
 639             m_popupInterface->PaintComboControl(dc,rectTextField);
 640         else
 641             wxComboPopup::DefaultPaintComboControl(this,dc,rectTextField);
 642     }
 643 }
 644
 645 void wxComboCtrl::OnMouseEvent( wxMouseEvent& event )
 646 {
 647     int mx = event.m_x;
 648     bool isOnButtonArea = m_btnArea.Contains(mx,event.m_y);
 649     int handlerFlags = isOnButtonArea ? wxCC_MF_ON_BUTTON : 0;
 650
 651     if ( PreprocessMouseEvent(event,isOnButtonArea) )
 652         return;
 653
 654     if ( (m_windowStyle & (wxCC_SPECIAL_DCLICK|wxCB_READONLY)) == wxCB_READONLY )
 655     {
 656         // if no textctrl and no special double-click, then the entire control acts
 657         // as a button
 658         handlerFlags |= wxCC_MF_ON_BUTTON;
 659         if ( HandleButtonMouseEvent(event,handlerFlags) )
 660             return;
 661     }
 662     else
 663     {
 664         if ( isOnButtonArea || HasCapture() ||
 665              (m_widthCustomPaint && mx < (m_tcArea.x+m_widthCustomPaint)) )
 666         {
 667             handlerFlags |= wxCC_MF_ON_CLICK_AREA;
 668
 669             if ( HandleButtonMouseEvent(event,handlerFlags) )
 670                 return;
 671         }
 672         else if ( m_btnState )
 673         {
 674             // otherwise need to clear the hover status
 675             m_btnState = 0;
 676             RefreshRect(m_btnArea);
 677         }
 678     }
 679
 680     //
 681     // This will handle left_down and left_dclick events outside button in a Windows-like manner.
 682     // See header file for further information on this method.
 683     HandleNormalMouseEvent(event);
 684
 685 }
 686
 687 #if wxUSE_COMBOCTRL_POPUP_ANIMATION
 688 static wxUint32 GetUserPreferencesMask()
 689 {
 690     static wxUint32 userPreferencesMask = 0;
 691     static bool valueSet = false;
 692
 693     if ( valueSet )
 694         return userPreferencesMask;
 695
 696     wxRegKey* pKey = NULL;
 697     wxRegKey key1(wxRegKey::HKCU, wxT("Software\\Policies\\Microsoft\\Control Panel"));
 698     wxRegKey key2(wxRegKey::HKCU, wxT("Software\\Policies\\Microsoft\\Windows\\Control Panel"));
 699     wxRegKey key3(wxRegKey::HKCU, wxT("Control Panel\\Desktop"));
 700
 701     if ( key1.Exists() )
 702         pKey = &key1;
 703     else if ( key2.Exists() )
 704         pKey = &key2;
 705     else if ( key3.Exists() )
 706         pKey = &key3;
 707
 708     if ( pKey && pKey->Open(wxRegKey::Read) )
 709     {
 710         wxMemoryBuffer buf;
 711         if ( pKey->HasValue(wxT("UserPreferencesMask")) &&
 712              pKey->QueryValue(wxT("UserPreferencesMask"), buf) )
 713         {
 714             if ( buf.GetDataLen() >= 4 )
 715             {
 716                 wxUint32* p = (wxUint32*) buf.GetData();
 717                 userPreferencesMask = *p;
 718             }
 719         }
 720     }
 721
 722     valueSet = true;
 723
 724     return userPreferencesMask;
 725 }
 726 #endif
 727
 728 #if wxUSE_COMBOCTRL_POPUP_ANIMATION
 729 void wxComboCtrl::DoTimerEvent()
 730 {
 731     bool stopTimer = false;
 732
 733     wxWindow* win = GetPopupWindow();
 734     wxWindow* popup = GetPopupControl()->GetControl();
 735
 736     // Popup was hidden before it was fully shown?
 737     if ( IsPopupWindowState(Hidden) )
 738     {
 739         stopTimer = true;
 740     }
 741     else
 742     {
 743         wxLongLong t = ::wxGetLocalTimeMillis();
 744         const wxRect& rect = m_animRect;
 745
 746         int pos = (int) (t-m_animStart).GetLo();
 747         if ( pos < COMBOBOX_ANIMATION_DURATION )
 748         {
 749             int height = rect.height;
 750             //int h0 = rect.height;
 751             int h = (((pos*256)/COMBOBOX_ANIMATION_DURATION)*height)/256;
 752             int y = (height - h);
 753             if ( y < 0 )
 754                 y = 0;
 755
 756             if ( m_animFlags & ShowAbove )
 757             {
 758                 win->SetSize( rect.x, rect.y + height - h, rect.width, h );
 759             }
 760             else
 761             {
 762                 // Note that apparently Move() should be called after
 763                 // SetSize() to reduce (or even eliminate) animation garbage
 764                 win->SetSize( rect.x, rect.y, rect.width, h );
 765                 popup->Move( 0, -y );
 766             }
 767         }
 768         else
 769         {
 770             stopTimer = true;
 771         }
 772     }
 773
 774     if ( stopTimer )
 775     {
 776         m_animTimer.Stop();
 777         DoShowPopup( m_animRect, m_animFlags );
 778         popup->Move( 0, 0 );
 779
 780         // Do a one final refresh to clean up the rare cases of animation
 781         // garbage
 782         win->Refresh();
 783     }
 784 }
 785 #endif
 786
 787 #if wxUSE_COMBOCTRL_POPUP_ANIMATION
 788 bool wxComboCtrl::AnimateShow( const wxRect& rect, int flags )
 789 {
 790     if ( GetUserPreferencesMask() & wxMSW_DESKTOP_USERPREFERENCESMASK_COMBOBOXANIM )
 791     {
 792         m_animStart = ::wxGetLocalTimeMillis();
 793         m_animRect = rect;
 794         m_animFlags = flags;
 795
 796         wxWindow* win = GetPopupWindow();
 797         win->SetSize( rect.x, rect.y, rect.width, 0 );
 798         win->Show();
 799
 800         m_animTimer.SetOwner( this, wxID_ANY );
 801         m_animTimer.Start( COMBOBOX_ANIMATION_RESOLUTION, wxTIMER_CONTINUOUS );
 802
 803         DoTimerEvent();
 804
 805         return false;
 806     }
 807
 808     return true;
 809 }
 810 #endif
 811
 812 wxCoord wxComboCtrl::GetNativeTextIndent() const
 813 {
 814 #if wxUSE_UXTHEME
 815     if ( wxUxThemeEngine::GetIfActive() )
 816         return NATIVE_TEXT_INDENT_XP;
 817 #endif
 818     return NATIVE_TEXT_INDENT_CLASSIC;
 819 }
 820
 821 bool wxComboCtrl::IsKeyPopupToggle(const wxKeyEvent& event) const
 822 {
 823     const bool isPopupShown = IsPopupShown();
 824
 825     switch ( event.GetKeyCode() )
 826     {
 827         case WXK_F4:
 828             // F4 toggles the popup in the native comboboxes, so emulate them
 829             if ( !event.AltDown() )
 830                 return true;
 831             break;
 832
 833         case WXK_ESCAPE:
 834             if ( isPopupShown )
 835                 return true;
 836             break;
 837
 838         case WXK_DOWN:
 839         case WXK_UP:
 840         case WXK_NUMPAD_DOWN:
 841         case WXK_NUMPAD_UP:
 842             // Arrow keys (and mouse wheel) toggle the popup in the native
 843             // combo boxes
 844             if ( event.AltDown() )
 845                 return true;
 846             break;
 847     }
 848
 849     return false;
 850 }
 851
 852 #endif // wxUSE_COMBOCTRL