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                            wxDefaultValidator,
 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, validator );
 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::OnThemeChange()
 225 {
 226     // there doesn't seem to be any way to get the text colour using themes
 227     // API: TMT_TEXTCOLOR doesn't work neither for EDIT nor COMBOBOX
 228     if ( !m_hasFgCol )
 229     {
 230         wxColour fgCol = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT);
 231         SetForegroundColour(fgCol);
 232         m_hasFgCol = false;
 233     }
 234
 235     // NB: use EDIT, not COMBOBOX (the latter works in XP but not Vista)
 236     wxColour bgCol = MSWGetThemeColour(L"EDIT",
 237                                        EP_EDITTEXT,
 238                                        ETS_NORMAL,
 239                                        ThemeColourBackground,
 240                                        wxSYS_COLOUR_WINDOW);
 241
 242     if ( !m_hasBgCol )
 243     {
 244         SetBackgroundColour(bgCol);
 245         m_hasBgCol = false;
 246     }
 247 }
 248
 249 void wxComboCtrl::OnResize()
 250 {
 251     //
 252     // Recalculates button and textctrl areas
 253
 254     int textCtrlYAdjust;
 255
 256 #if wxUSE_UXTHEME
 257     if ( wxUxThemeEngine::GetIfActive() )
 258     {
 259         textCtrlYAdjust = TEXTCTRLYADJUST_XP;
 260     }
 261     else
 262 #endif
 263     {
 264         textCtrlYAdjust = TEXTCTRLYADJUST_CLASSIC;
 265     }
 266
 267     // Technically Classic Windows style combo has more narrow button,
 268     // but the native renderer doesn't paint it well like that.
 269     int btnWidth = 17;
 270     CalculateAreas(btnWidth);
 271
 272     // Position textctrl using standard routine
 273     PositionTextCtrl(0, textCtrlYAdjust);
 274 }
 275
 276 // Draws non-XP GUI dotted line around the focus area
 277 static void wxMSWDrawFocusRect( wxDC& dc, const wxRect& rect )
 278 {
 279 #if !defined(__WXWINCE__)
 280     /*
 281     RECT mswRect;
 282     mswRect.left = rect.x;
 283     mswRect.top = rect.y;
 284     mswRect.right = rect.x + rect.width;
 285     mswRect.bottom = rect.y + rect.height;
 286     HDC hdc = (HDC) dc.GetHDC();
 287     SetMapMode(hdc,MM_TEXT); // Just in case...
 288     DrawFocusRect(hdc,&mswRect);
 289     */
 290     // FIXME: Use DrawFocusRect code above (currently it draws solid line
 291     //   for caption focus but works ok for other stuff).
 292     //   Also, this code below may not work in future wx versions, since
 293     //   it employs wxCAP_BUTT hack to have line of width 1.
 294     dc.SetLogicalFunction(wxINVERT);
 295
 296     wxPen pen(*wxBLACK, 1, wxPENSTYLE_DOT);
 297     pen.SetCap(wxCAP_BUTT);
 298     dc.SetPen(pen);
 299     dc.SetBrush(*wxTRANSPARENT_BRUSH);
 300
 301     dc.DrawRectangle(rect);
 302
 303     dc.SetLogicalFunction(wxCOPY);
 304 #else
 305     dc.SetLogicalFunction(wxINVERT);
 306
 307     dc.SetPen(wxPen(*wxBLACK,1,wxDOT));
 308     dc.SetBrush(*wxTRANSPARENT_BRUSH);
 309
 310     dc.DrawRectangle(rect);
 311
 312     dc.SetLogicalFunction(wxCOPY);
 313 #endif
 314 }
 315
 316 // draw focus background on area in a way typical on platform
 317 void
 318 wxComboCtrl::PrepareBackground( wxDC& dc, const wxRect& rect, int flags ) const
 319 {
 320 #if wxUSE_UXTHEME
 321     wxUxThemeHandle hTheme(this, L"COMBOBOX");
 322 #endif
 323
 324     wxSize sz = GetClientSize();
 325     bool isEnabled;
 326     bool doDrawFocusRect; // also selected
 327
 328     // For smaller size control (and for disabled background) use less spacing
 329     int focusSpacingX;
 330     int focusSpacingY;
 331
 332     if ( !(flags & wxCONTROL_ISSUBMENU) )
 333     {
 334         // Drawing control
 335         isEnabled = IsEnabled();
 336         doDrawFocusRect = ShouldDrawFocus();
 337
 338 #if wxUSE_UXTHEME
 339         // Windows-style: for smaller size control (and for disabled background) use less spacing
 340         if ( hTheme )
 341         {
 342             // WinXP  Theme
 343             focusSpacingX = isEnabled ? 2 : 1;
 344             focusSpacingY = sz.y > (GetCharHeight()+2) && isEnabled ? 2 : 1;
 345         }
 346         else
 347 #endif
 348         {
 349             // Classic Theme
 350             if ( isEnabled )
 351             {
 352                 focusSpacingX = 1;
 353                 focusSpacingY = 1;
 354             }
 355             else
 356             {
 357                 focusSpacingX = 0;
 358                 focusSpacingY = 0;
 359             }
 360         }
 361     }
 362     else
 363     {
 364         // Drawing a list item
 365         isEnabled = true; // they are never disabled
 366         doDrawFocusRect = flags & wxCONTROL_SELECTED ? true : false;
 367
 368         focusSpacingX = 0;
 369         focusSpacingY = 0;
 370     }
 371
 372     // Set the background sub-rectangle for selection, disabled etc
 373     wxRect selRect(rect);
 374     selRect.y += focusSpacingY;
 375     selRect.height -= (focusSpacingY*2);
 376
 377     int wcp = 0;
 378
 379     if ( !(flags & wxCONTROL_ISSUBMENU) )
 380         wcp += m_widthCustomPaint;
 381
 382     selRect.x += wcp + focusSpacingX;
 383     selRect.width -= wcp + (focusSpacingX*2);
 384
 385     //wxUxThemeEngine* theme = NULL;
 386     //if ( hTheme )
 387     //    theme = wxUxThemeEngine::GetIfActive();
 388
 389     wxColour fgCol;
 390     wxColour bgCol;
 391     bool doDrawDottedEdge = false;
 392     bool doDrawSelRect = true;
 393
 394     // TODO: doDrawDottedEdge = true when focus has arrived to control via tab.
 395     //       (and other cases which are not that apparent).
 396
 397     if ( isEnabled )
 398     {
 399         // If popup is hidden and this control is focused,
 400         // then draw the focus-indicator (selbgcolor background etc.).
 401         if ( doDrawFocusRect )
 402         {
 403             // NB: We can't really use XP visual styles to get TMT_TEXTCOLOR since
 404             //     it is not properly defined for combo boxes. Instead, they expect
 405             //     you to use DrawThemeText.
 406             //
 407             //    Here is, however, sample code how to get theme colours:
 408             //
 409             //    COLORREF cref;
 410             //    theme->GetThemeColor(hTheme,EP_EDITTEXT,ETS_NORMAL,TMT_TEXTCOLOR,&cref);
 411             //    dc.SetTextForeground( wxRGBToColour(cref) );
 412             if ( (m_iFlags & wxCC_FULL_BUTTON) && !(flags & wxCONTROL_ISSUBMENU) )
 413             {
 414                 // Vista style read-only combo
 415                 fgCol = GetForegroundColour();
 416                 bgCol = GetBackgroundColour();
 417                 doDrawSelRect = false;
 418                 doDrawDottedEdge = true;
 419             }
 420             else
 421             {
 422                 fgCol = wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHTTEXT);
 423                 bgCol = wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHT);
 424             }
 425         }
 426         else
 427         {
 428             fgCol = GetForegroundColour();
 429             bgCol = GetBackgroundColour();
 430             doDrawSelRect = false;
 431         }
 432     }
 433     else
 434     {
 435         fgCol = wxSystemSettings::GetColour(wxSYS_COLOUR_GRAYTEXT);
 436         bgCol = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
 437     }
 438
 439     dc.SetTextForeground(fgCol);
 440     dc.SetBrush(bgCol);
 441     if ( doDrawSelRect )
 442     {
 443         dc.SetPen(bgCol);
 444         dc.DrawRectangle(selRect);
 445     }
 446
 447     if ( doDrawDottedEdge )
 448         wxMSWDrawFocusRect(dc, selRect);
 449
 450     // Don't clip exactly to the selection rectangle so we can draw
 451     // to the non-selected area in front of it.
 452     wxRect clipRect(rect.x,rect.y,
 453                     (selRect.x+selRect.width)-rect.x-1,rect.height);
 454     dc.SetClippingRegion(clipRect);
 455 }
 456
 457 void wxComboCtrl::OnPaintEvent( wxPaintEvent& WXUNUSED(event) )
 458 {
 459     // TODO: Convert drawing in this function to Windows API Code
 460
 461     wxSize sz = GetClientSize();
 462     wxAutoBufferedPaintDC dc(this);
 463
 464     const wxRect& rectButton = m_btnArea;
 465     wxRect rectTextField = m_tcArea;
 466     wxColour bgCol = GetBackgroundColour();
 467
 468 #if wxUSE_UXTHEME
 469     const bool isEnabled = IsEnabled();
 470
 471     wxMSWDCImpl *impl = (wxMSWDCImpl*) dc.GetImpl();
 472     HDC hDc = GetHdcOf(*impl);
 473     HWND hWnd = GetHwndOf(this);
 474
 475     wxUxThemeEngine* theme = NULL;
 476     wxUxThemeHandle hTheme(this, L"COMBOBOX");
 477
 478     if ( hTheme )
 479         theme = wxUxThemeEngine::GetIfActive();
 480 #endif // wxUSE_UXTHEME
 481
 482     wxRect borderRect(0,0,sz.x,sz.y);
 483
 484     if ( m_iFlags & wxCC_IFLAG_BUTTON_OUTSIDE )
 485     {
 486         borderRect = m_tcArea;
 487         borderRect.Inflate(1);
 488     }
 489
 490     int drawButFlags = 0;
 491
 492 #if wxUSE_UXTHEME
 493     if ( hTheme )
 494     {
 495         const bool useVistaComboBox = ::wxGetWinVersion() >= wxWinVersion_Vista;
 496
 497         RECT rFull;
 498         wxCopyRectToRECT(borderRect, rFull);
 499
 500         RECT rButton;
 501         wxCopyRectToRECT(rectButton, rButton);
 502
 503         RECT rBorder;
 504         wxCopyRectToRECT(borderRect, rBorder);
 505
 506         bool isNonStdButton = (m_iFlags & wxCC_IFLAG_BUTTON_OUTSIDE) ||
 507                               (m_iFlags & wxCC_IFLAG_HAS_NONSTANDARD_BUTTON);
 508
 509         //
 510         // Get some states for themed drawing
 511         int butState;
 512
 513         if ( !isEnabled )
 514         {
 515             butState = CBXS_DISABLED;
 516         }
 517         // Vista will display the drop-button as depressed always
 518         // when the popup window is visilbe
 519         else if ( (m_btnState & wxCONTROL_PRESSED) ||
 520                   (useVistaComboBox && !IsPopupWindowState(Hidden)) )
 521         {
 522             butState = CBXS_PRESSED;
 523         }
 524         else if ( m_btnState & wxCONTROL_CURRENT )
 525         {
 526             butState = CBXS_HOT;
 527         }
 528         else
 529         {
 530             butState = CBXS_NORMAL;
 531         }
 532
 533         int comboBoxPart = 0;  // For XP, use the 'default' part
 534         RECT* rUseForBg = &rBorder;
 535
 536         bool drawFullButton = false;
 537         int bgState = butState;
 538         const bool isFocused = (FindFocus() == GetMainWindowOfCompositeControl()) ? true : false;
 539
 540         if ( useVistaComboBox )
 541         {
 542             // FIXME: Either SetBackgroundColour or GetBackgroundColour
 543             //        doesn't work under Vista, so here's a temporary
 544             //        workaround.
 545             bgCol = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
 546
 547             // Draw the entire control as a single button?
 548             if ( !isNonStdButton )
 549             {
 550                 if ( HasFlag(wxCB_READONLY) )
 551                     drawFullButton = true;
 552             }
 553
 554             if ( drawFullButton )
 555             {
 556                 comboBoxPart = CP_READONLY;
 557                 rUseForBg = &rFull;
 558
 559                 // It should be safe enough to update this flag here.
 560                 m_iFlags |= wxCC_FULL_BUTTON;
 561             }
 562             else
 563             {
 564                 comboBoxPart = CP_BORDER;
 565                 m_iFlags &= ~wxCC_FULL_BUTTON;
 566
 567                 if ( isFocused )
 568                     bgState = CBB_FOCUSED;
 569                 else
 570                     bgState = CBB_NORMAL;
 571             }
 572         }
 573
 574         //
 575         // Draw parent's background, if necessary
 576         RECT* rUseForTb = NULL;
 577
 578         if ( theme->IsThemeBackgroundPartiallyTransparent( hTheme, comboBoxPart, bgState ) )
 579             rUseForTb = &rFull;
 580         else if ( m_iFlags & wxCC_IFLAG_BUTTON_OUTSIDE )
 581             rUseForTb = &rButton;
 582
 583         if ( rUseForTb )
 584             theme->DrawThemeParentBackground( hWnd, hDc, rUseForTb );
 585
 586         //
 587         // Draw the control background (including the border)
 588         if ( m_widthCustomBorder > 0 )
 589         {
 590             theme->DrawThemeBackground( hTheme, hDc, comboBoxPart, bgState, rUseForBg, NULL );
 591         }
 592         else
 593         {
 594             // No border. We can't use theme, since it cannot be relied on
 595             // to deliver borderless drawing, even with DrawThemeBackgroundEx.
 596             dc.SetBrush(bgCol);
 597             dc.SetPen(bgCol);
 598             dc.DrawRectangle(borderRect);
 599         }
 600
 601         //
 602         // Draw the drop-button
 603         if ( !isNonStdButton )
 604         {
 605             drawButFlags = Button_BitmapOnly;
 606
 607             int butPart = CP_DROPDOWNBUTTON;
 608
 609             if ( useVistaComboBox )
 610             {
 611                 if ( drawFullButton )
 612                 {
 613                     // We need to alter the button style slightly before
 614                     // drawing the actual button (but it was good above
 615                     // when background etc was done).
 616                     if ( butState == CBXS_HOT || butState == CBXS_PRESSED )
 617                         butState = CBXS_NORMAL;
 618                 }
 619
 620                 if ( m_btnSide == wxRIGHT )
 621                     butPart = CP_DROPDOWNBUTTONRIGHT;
 622                 else
 623                     butPart = CP_DROPDOWNBUTTONLEFT;
 624
 625             }
 626             theme->DrawThemeBackground( hTheme, hDc, butPart, butState, &rButton, NULL );
 627         }
 628         else if ( useVistaComboBox &&
 629                   (m_iFlags & wxCC_IFLAG_BUTTON_OUTSIDE) )
 630         {
 631             // We'll do this, because DrawThemeParentBackground
 632             // doesn't seem to be reliable on Vista.
 633             drawButFlags |= Button_PaintBackground;
 634         }
 635     }
 636     else
 637 #endif
 638     {
 639         // Windows 2000 and earlier
 640         drawButFlags = Button_PaintBackground;
 641
 642         dc.SetBrush(bgCol);
 643         dc.SetPen(bgCol);
 644         dc.DrawRectangle(borderRect);
 645     }
 646
 647     // Button rendering (may only do the bitmap on button, depending on the flags)
 648     DrawButton( dc, rectButton, drawButFlags );
 649
 650     // Paint required portion of the custom image on the control
 651     if ( (!m_text || m_widthCustomPaint) )
 652     {
 653         wxASSERT( m_widthCustomPaint >= 0 );
 654
 655         // this is intentionally here to allow drawed rectangle's
 656         // right edge to be hidden
 657         if ( m_text )
 658             rectTextField.width = m_widthCustomPaint;
 659
 660         dc.SetFont( GetFont() );
 661
 662         dc.SetClippingRegion(rectTextField);
 663         if ( m_popupInterface )
 664             m_popupInterface->PaintComboControl(dc,rectTextField);
 665         else
 666             wxComboPopup::DefaultPaintComboControl(this,dc,rectTextField);
 667     }
 668 }
 669
 670 void wxComboCtrl::OnMouseEvent( wxMouseEvent& event )
 671 {
 672     int mx = event.m_x;
 673     bool isOnButtonArea = m_btnArea.Contains(mx,event.m_y);
 674     int handlerFlags = isOnButtonArea ? wxCC_MF_ON_BUTTON : 0;
 675
 676     if ( PreprocessMouseEvent(event,isOnButtonArea) )
 677         return;
 678
 679     if ( (m_windowStyle & (wxCC_SPECIAL_DCLICK|wxCB_READONLY)) == wxCB_READONLY )
 680     {
 681         // if no textctrl and no special double-click, then the entire control acts
 682         // as a button
 683         handlerFlags |= wxCC_MF_ON_BUTTON;
 684         if ( HandleButtonMouseEvent(event,handlerFlags) )
 685             return;
 686     }
 687     else
 688     {
 689         if ( isOnButtonArea || HasCapture() ||
 690              (m_widthCustomPaint && mx < (m_tcArea.x+m_widthCustomPaint)) )
 691         {
 692             handlerFlags |= wxCC_MF_ON_CLICK_AREA;
 693
 694             if ( HandleButtonMouseEvent(event,handlerFlags) )
 695                 return;
 696         }
 697         else if ( m_btnState )
 698         {
 699             // otherwise need to clear the hover status
 700             m_btnState = 0;
 701             RefreshRect(m_btnArea);
 702         }
 703     }
 704
 705     //
 706     // This will handle left_down and left_dclick events outside button in a Windows-like manner.
 707     // See header file for further information on this method.
 708     HandleNormalMouseEvent(event);
 709
 710 }
 711
 712 #if wxUSE_COMBOCTRL_POPUP_ANIMATION
 713 static wxUint32 GetUserPreferencesMask()
 714 {
 715     static wxUint32 userPreferencesMask = 0;
 716     static bool valueSet = false;
 717
 718     if ( valueSet )
 719         return userPreferencesMask;
 720
 721     wxRegKey* pKey = NULL;
 722     wxRegKey key1(wxRegKey::HKCU, wxT("Software\\Policies\\Microsoft\\Control Panel"));
 723     wxRegKey key2(wxRegKey::HKCU, wxT("Software\\Policies\\Microsoft\\Windows\\Control Panel"));
 724     wxRegKey key3(wxRegKey::HKCU, wxT("Control Panel\\Desktop"));
 725
 726     if ( key1.Exists() )
 727         pKey = &key1;
 728     else if ( key2.Exists() )
 729         pKey = &key2;
 730     else if ( key3.Exists() )
 731         pKey = &key3;
 732
 733     if ( pKey && pKey->Open(wxRegKey::Read) )
 734     {
 735         wxMemoryBuffer buf;
 736         if ( pKey->HasValue(wxT("UserPreferencesMask")) &&
 737              pKey->QueryValue(wxT("UserPreferencesMask"), buf) )
 738         {
 739             if ( buf.GetDataLen() >= 4 )
 740             {
 741                 wxUint32* p = (wxUint32*) buf.GetData();
 742                 userPreferencesMask = *p;
 743             }
 744         }
 745     }
 746
 747     valueSet = true;
 748
 749     return userPreferencesMask;
 750 }
 751 #endif
 752
 753 #if wxUSE_COMBOCTRL_POPUP_ANIMATION
 754 void wxComboCtrl::DoTimerEvent()
 755 {
 756     bool stopTimer = false;
 757
 758     wxWindow* popup = GetPopupControl()->GetControl();
 759
 760     // Popup was hidden before it was fully shown?
 761     if ( IsPopupWindowState(Hidden) )
 762     {
 763         stopTimer = true;
 764     }
 765     else
 766     {
 767         wxLongLong t = ::wxGetLocalTimeMillis();
 768         const wxRect& rect = m_animRect;
 769         wxWindow* win = GetPopupWindow();
 770
 771         int pos = (int) (t-m_animStart).GetLo();
 772         if ( pos < COMBOBOX_ANIMATION_DURATION )
 773         {
 774             int height = rect.height;
 775             //int h0 = rect.height;
 776             int h = (((pos*256)/COMBOBOX_ANIMATION_DURATION)*height)/256;
 777             int y = (height - h);
 778             if ( y < 0 )
 779                 y = 0;
 780
 781             if ( m_animFlags & ShowAbove )
 782             {
 783                 win->SetSize( rect.x, rect.y + height - h, rect.width, h );
 784             }
 785             else
 786             {
 787                 popup->Move( 0, -y );
 788                 win->SetSize( rect.x, rect.y, rect.width, h );
 789             }
 790         }
 791         else
 792         {
 793             stopTimer = true;
 794         }
 795     }
 796
 797     if ( stopTimer )
 798     {
 799         popup->Move( 0, 0 );
 800         m_animTimer.Stop();
 801         DoShowPopup( m_animRect, m_animFlags );
 802     }
 803 }
 804 #endif
 805
 806 #if wxUSE_COMBOCTRL_POPUP_ANIMATION
 807 bool wxComboCtrl::AnimateShow( const wxRect& rect, int flags )
 808 {
 809     if ( GetUserPreferencesMask() & wxMSW_DESKTOP_USERPREFERENCESMASK_COMBOBOXANIM )
 810     {
 811         m_animStart = ::wxGetLocalTimeMillis();
 812         m_animRect = rect;
 813         m_animFlags = flags;
 814
 815         wxWindow* win = GetPopupWindow();
 816         win->SetSize( rect.x, rect.y, rect.width, 0 );
 817         win->Show();
 818
 819         m_animTimer.SetOwner( this, wxID_ANY );
 820         m_animTimer.Start( COMBOBOX_ANIMATION_RESOLUTION, wxTIMER_CONTINUOUS );
 821
 822         DoTimerEvent();
 823
 824         return false;
 825     }
 826
 827     return true;
 828 }
 829 #endif
 830
 831 wxCoord wxComboCtrl::GetNativeTextIndent() const
 832 {
 833 #if wxUSE_UXTHEME
 834     if ( wxUxThemeEngine::GetIfActive() )
 835         return NATIVE_TEXT_INDENT_XP;
 836 #endif
 837     return NATIVE_TEXT_INDENT_CLASSIC;
 838 }
 839
 840 bool wxComboCtrl::IsKeyPopupToggle(const wxKeyEvent& event) const
 841 {
 842     const bool isPopupShown = IsPopupShown();
 843
 844     switch ( event.GetKeyCode() )
 845     {
 846         case WXK_F4:
 847             // F4 toggles the popup in the native comboboxes, so emulate them
 848             if ( !event.AltDown() )
 849                 return true;
 850             break;
 851
 852         case WXK_ESCAPE:
 853             if ( isPopupShown )
 854                 return true;
 855             break;
 856
 857         case WXK_DOWN:
 858         case WXK_UP:
 859             // On XP or with writable combo in Classic, arrows don't open the
 860             // popup but Alt-arrow does
 861             if ( event.AltDown() ||
 862                     ( !isPopupShown &&
 863                       HasFlag(wxCB_READONLY)
 864 #if wxUSE_UXTHEME
 865                       && !wxUxThemeEngine::GetIfActive()
 866 #endif
 867                     ) )
 868             {
 869                 return true;
 870             }
 871             break;
 872     }
 873
 874     return false;
 875 }
 876
 877 #endif // wxUSE_COMBOCTRL