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 #include "wx/msw/uxtheme.h"
  42
  43 // Change to #if 1 to include tmschema.h for easier testing of theme
  44 // parameters.
  45 #if 0
  46     #include <tmschema.h>
  47     #include <VSStyle.h>
  48 #else
  49     //----------------------------------
  50     #define EP_EDITTEXT         1
  51     #define ETS_NORMAL          1
  52     #define ETS_HOT             2
  53     #define ETS_SELECTED        3
  54     #define ETS_DISABLED        4
  55     #define ETS_FOCUSED         5
  56     #define ETS_READONLY        6
  57     #define ETS_ASSIST          7
  58     #define TMT_FILLCOLOR       3802
  59     #define TMT_TEXTCOLOR       3803
  60     #define TMT_BORDERCOLOR     3801
  61     #define TMT_EDGEFILLCOLOR   3808
  62     #define TMT_BGTYPE          4001
  63
  64     #define BT_IMAGEFILE        0
  65     #define BT_BORDERFILL       1
  66
  67     #define CP_DROPDOWNBUTTON           1
  68     #define CP_BACKGROUND               2 // This and above are Vista and later only
  69     #define CP_TRANSPARENTBACKGROUND    3
  70     #define CP_BORDER                   4
  71     #define CP_READONLY                 5
  72     #define CP_DROPDOWNBUTTONRIGHT      6
  73     #define CP_DROPDOWNBUTTONLEFT       7
  74     #define CP_CUEBANNER                8
  75
  76     #define CBXS_NORMAL                 1
  77     #define CBXS_HOT                    2
  78     #define CBXS_PRESSED                3
  79     #define CBXS_DISABLED               4
  80
  81     #define CBXSR_NORMAL                1
  82     #define CBXSR_HOT                   2
  83     #define CBXSR_PRESSED               3
  84     #define CBXSR_DISABLED              4
  85
  86     #define CBXSL_NORMAL                1
  87     #define CBXSL_HOT                   2
  88     #define CBXSL_PRESSED               3
  89     #define CBXSL_DISABLED              4
  90
  91     #define CBTBS_NORMAL                1
  92     #define CBTBS_HOT                   2
  93     #define CBTBS_DISABLED              3
  94     #define CBTBS_FOCUSED               4
  95
  96     #define CBB_NORMAL                  1
  97     #define CBB_HOT                     2
  98     #define CBB_FOCUSED                 3
  99     #define CBB_DISABLED                4
 100
 101     #define CBRO_NORMAL                 1
 102     #define CBRO_HOT                    2
 103     #define CBRO_PRESSED                3
 104     #define CBRO_DISABLED               4
 105
 106     #define CBCB_NORMAL                 1
 107     #define CBCB_HOT                    2
 108     #define CBCB_PRESSED                3
 109     #define CBCB_DISABLED               4
 110
 111 #endif
 112
 113
 114 #define NATIVE_TEXT_INDENT_XP       4
 115 #define NATIVE_TEXT_INDENT_CLASSIC  2
 116
 117 #define TEXTCTRLXADJUST_XP          1
 118 #define TEXTCTRLYADJUST_XP          3
 119 #define TEXTCTRLXADJUST_CLASSIC     1
 120 #define TEXTCTRLYADJUST_CLASSIC     3
 121
 122 #define COMBOBOX_ANIMATION_RESOLUTION   10
 123
 124 #define COMBOBOX_ANIMATION_DURATION     200  // In milliseconds
 125
 126 #define wxMSW_DESKTOP_USERPREFERENCESMASK_COMBOBOXANIM    (1<<2)
 127
 128
 129 // ============================================================================
 130 // implementation
 131 // ============================================================================
 132
 133
 134 BEGIN_EVENT_TABLE(wxComboCtrl, wxComboCtrlBase)
 135     EVT_PAINT(wxComboCtrl::OnPaintEvent)
 136     EVT_MOUSE_EVENTS(wxComboCtrl::OnMouseEvent)
 137 #if wxUSE_COMBOCTRL_POPUP_ANIMATION
 138     EVT_TIMER(wxID_ANY, wxComboCtrl::OnTimerEvent)
 139 #endif
 140 END_EVENT_TABLE()
 141
 142
 143 IMPLEMENT_DYNAMIC_CLASS(wxComboCtrl, wxComboCtrlBase)
 144
 145 void wxComboCtrl::Init()
 146 {
 147 }
 148
 149 bool wxComboCtrl::Create(wxWindow *parent,
 150                             wxWindowID id,
 151                             const wxString& value,
 152                             const wxPoint& pos,
 153                             const wxSize& size,
 154                             long style,
 155                             const wxValidator& validator,
 156                             const wxString& name)
 157 {
 158
 159     // Set border
 160     long border = style & wxBORDER_MASK;
 161
 162     wxUxThemeEngine* theme = wxUxThemeEngine::GetIfActive();
 163
 164     if ( !border )
 165     {
 166         if ( theme )
 167         {
 168             // For XP, have 1-width custom border, for older version use sunken
 169             border = wxBORDER_NONE;
 170             m_widthCustomBorder = 1;
 171         }
 172         else
 173             border = wxBORDER_SUNKEN;
 174
 175         style = (style & ~(wxBORDER_MASK)) | border;
 176     }
 177
 178     // create main window
 179     if ( !wxComboCtrlBase::Create(parent,
 180                            id,
 181                            value,
 182                            pos,
 183                            size,
 184                            style | wxFULL_REPAINT_ON_RESIZE,
 185                            wxDefaultValidator,
 186                            name) )
 187         return false;
 188
 189     if ( theme )
 190     {
 191         if ( ::wxGetWinVersion() >= wxWinVersion_Vista )
 192             m_iFlags |= wxCC_BUTTON_STAYS_DOWN |wxCC_BUTTON_COVERS_BORDER;
 193     }
 194
 195     if ( style & wxCC_STD_BUTTON )
 196         m_iFlags |= wxCC_POPUP_ON_MOUSE_UP;
 197
 198     // Create textctrl, if necessary
 199     CreateTextCtrl( wxNO_BORDER, validator );
 200
 201     // Add keyboard input handlers for main control and textctrl
 202     InstallInputHandlers();
 203
 204     // Prepare background for double-buffering
 205     SetBackgroundStyle( wxBG_STYLE_CUSTOM );
 206
 207     // SetInitialSize should be called last
 208     SetInitialSize(size);
 209
 210     return true;
 211 }
 212
 213 wxComboCtrl::~wxComboCtrl()
 214 {
 215 }
 216
 217 void wxComboCtrl::OnThemeChange()
 218 {
 219     wxUxThemeEngine* theme = wxUxThemeEngine::GetIfActive();
 220     if ( theme )
 221     {
 222         wxUxThemeHandle hTheme(this, L"EDIT");
 223
 224         COLORREF col;
 225         HRESULT hr = theme->GetThemeColor(hTheme,EP_EDITTEXT,ETS_NORMAL,TMT_FILLCOLOR,&col);
 226         if ( FAILED(hr) )
 227             wxLogApiError(_T("GetThemeColor(EDIT, EP_EDITTEXT, ETS_NORMAL, TMT_FILLCOLOR)"), hr);
 228         else
 229             SetBackgroundColour(wxRGBToColour(col));
 230
 231         hr = theme->GetThemeColor(hTheme,EP_EDITTEXT,ETS_NORMAL,TMT_TEXTCOLOR,&col);
 232         if ( FAILED(hr) )
 233             wxLogApiError(_T("GetThemeColor(EDIT, EP_EDITTEXT, ETS_NORMAL, TMT_TEXTCOLOR)"), hr);
 234         else
 235             SetForegroundColour(wxRGBToColour(col));
 236     }
 237     else
 238     {
 239         SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
 240         SetForegroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT));
 241     }
 242 }
 243
 244 void wxComboCtrl::OnResize()
 245 {
 246     //
 247     // Recalculates button and textctrl areas
 248
 249     int textCtrlXAdjust;
 250     int textCtrlYAdjust;
 251
 252     if ( wxUxThemeEngine::GetIfActive() )
 253     {
 254         textCtrlXAdjust = TEXTCTRLXADJUST_XP;
 255         textCtrlYAdjust = TEXTCTRLYADJUST_XP;
 256     }
 257     else
 258     {
 259         textCtrlXAdjust = TEXTCTRLXADJUST_CLASSIC;
 260         textCtrlYAdjust = TEXTCTRLYADJUST_CLASSIC;
 261     }
 262
 263     // Technically Classic Windows style combo has more narrow button,
 264     // but the native renderer doesn't paint it well like that.
 265     int btnWidth = 17;
 266     CalculateAreas(btnWidth);
 267
 268     // Position textctrl using standard routine
 269     PositionTextCtrl(textCtrlXAdjust,textCtrlYAdjust);
 270 }
 271
 272 // Draws non-XP GUI dotted line around the focus area
 273 static void wxMSWDrawFocusRect( wxDC& dc, const wxRect& rect )
 274 {
 275 #if !defined(__WXWINCE__)
 276     /*
 277     RECT mswRect;
 278     mswRect.left = rect.x;
 279     mswRect.top = rect.y;
 280     mswRect.right = rect.x + rect.width;
 281     mswRect.bottom = rect.y + rect.height;
 282     HDC hdc = (HDC) dc.GetHDC();
 283     SetMapMode(hdc,MM_TEXT); // Just in case...
 284     DrawFocusRect(hdc,&mswRect);
 285     */
 286     // FIXME: Use DrawFocusRect code above (currently it draws solid line
 287     //   for caption focus but works ok for other stuff).
 288     //   Also, this code below may not work in future wx versions, since
 289     //   it employs wxCAP_BUTT hack to have line of width 1.
 290     dc.SetLogicalFunction(wxINVERT);
 291
 292     wxPen pen(*wxBLACK,1,wxDOT);
 293     pen.SetCap(wxCAP_BUTT);
 294     dc.SetPen(pen);
 295     dc.SetBrush(*wxTRANSPARENT_BRUSH);
 296
 297     dc.DrawRectangle(rect);
 298
 299     dc.SetLogicalFunction(wxCOPY);
 300 #else
 301     dc.SetLogicalFunction(wxINVERT);
 302
 303     dc.SetPen(wxPen(*wxBLACK,1,wxDOT));
 304     dc.SetBrush(*wxTRANSPARENT_BRUSH);
 305
 306     dc.DrawRectangle(rect);
 307
 308     dc.SetLogicalFunction(wxCOPY);
 309 #endif
 310 }
 311
 312 // draw focus background on area in a way typical on platform
 313 void
 314 wxComboCtrl::PrepareBackground( wxDC& dc, const wxRect& rect, int flags ) const
 315 {
 316     wxUxThemeHandle hTheme(this, L"COMBOBOX");
 317
 318     wxSize sz = GetClientSize();
 319     bool isEnabled;
 320     bool doDrawFocusRect; // also selected
 321
 322     // For smaller size control (and for disabled background) use less spacing
 323     int focusSpacingX;
 324     int focusSpacingY;
 325
 326     if ( !(flags & wxCONTROL_ISSUBMENU) )
 327     {
 328         // Drawing control
 329         isEnabled = IsEnabled();
 330         doDrawFocusRect = ShouldDrawFocus();
 331
 332         // Windows-style: for smaller size control (and for disabled background) use less spacing
 333         if ( hTheme )
 334         {
 335             // WinXP  Theme
 336             focusSpacingX = isEnabled ? 2 : 1;
 337             focusSpacingY = sz.y > (GetCharHeight()+2) && isEnabled ? 2 : 1;
 338         }
 339         else
 340         {
 341             // Classic Theme
 342             if ( isEnabled )
 343             {
 344                 focusSpacingX = 1;
 345                 focusSpacingY = 1;
 346             }
 347             else
 348             {
 349                 focusSpacingX = 0;
 350                 focusSpacingY = 0;
 351             }
 352         }
 353     }
 354     else
 355     {
 356         // Drawing a list item
 357         isEnabled = true; // they are never disabled
 358         doDrawFocusRect = flags & wxCONTROL_SELECTED ? true : false;
 359
 360         focusSpacingX = 0;
 361         focusSpacingY = 0;
 362     }
 363
 364     // Set the background sub-rectangle for selection, disabled etc
 365     wxRect selRect(rect);
 366     selRect.y += focusSpacingY;
 367     selRect.height -= (focusSpacingY*2);
 368
 369     int wcp = 0;
 370
 371     if ( !(flags & wxCONTROL_ISSUBMENU) )
 372         wcp += m_widthCustomPaint;
 373
 374     selRect.x += wcp + focusSpacingX;
 375     selRect.width -= wcp + (focusSpacingX*2);
 376
 377     //wxUxThemeEngine* theme = (wxUxThemeEngine*) NULL;
 378     //if ( hTheme )
 379     //    theme = wxUxThemeEngine::GetIfActive();
 380
 381     wxColour bgCol;
 382     bool doDrawDottedEdge = false;
 383     bool doDrawSelRect = true;
 384
 385     // TODO: doDrawDottedEdge = true when focus has arrived to control via tab.
 386     //       (and other cases which are not that apparent).
 387
 388     if ( isEnabled )
 389     {
 390         // If popup is hidden and this control is focused,
 391         // then draw the focus-indicator (selbgcolor background etc.).
 392         if ( doDrawFocusRect )
 393         {
 394             // NB: We can't really use XP visual styles to get TMT_TEXTCOLOR since
 395             //     it is not properly defined for combo boxes. Instead, they expect
 396             //     you to use DrawThemeText.
 397             //
 398             //    Here is, however, sample code how to get theme colours:
 399             //
 400             //    COLORREF cref;
 401             //    theme->GetThemeColor(hTheme,EP_EDITTEXT,ETS_NORMAL,TMT_TEXTCOLOR,&cref);
 402             //    dc.SetTextForeground( wxRGBToColour(cref) );
 403             if ( (m_iFlags & wxCC_FULL_BUTTON) && !(flags & wxCONTROL_ISSUBMENU) )
 404             {
 405                 // Vista style read-only combo
 406                 doDrawSelRect = false;
 407                 doDrawDottedEdge = true;
 408             }
 409             else
 410             {
 411                 dc.SetTextForeground( wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHTTEXT) );
 412                 bgCol = wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHT);
 413             }
 414         }
 415         else
 416         {
 417             dc.SetTextForeground( wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT) );
 418             bgCol = GetBackgroundColour();
 419             doDrawSelRect = false;
 420         }
 421     }
 422     else
 423     {
 424         dc.SetTextForeground( wxSystemSettings::GetColour(wxSYS_COLOUR_GRAYTEXT) );
 425         bgCol = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
 426     }
 427
 428     dc.SetBrush(bgCol);
 429     if ( doDrawSelRect )
 430     {
 431         dc.SetPen(bgCol);
 432         dc.DrawRectangle(selRect);
 433     }
 434
 435     if ( doDrawDottedEdge )
 436         wxMSWDrawFocusRect(dc, selRect);
 437
 438     // Don't clip exactly to the selection rectangle so we can draw
 439     // to the non-selected area in front of it.
 440     wxRect clipRect(rect.x,rect.y,
 441                     (selRect.x+selRect.width)-rect.x-1,rect.height);
 442     dc.SetClippingRegion(clipRect);
 443 }
 444
 445 void wxComboCtrl::OnPaintEvent( wxPaintEvent& WXUNUSED(event) )
 446 {
 447     // TODO: Convert drawing in this function to Windows API Code
 448
 449     wxSize sz = GetClientSize();
 450     wxAutoBufferedPaintDC dc(this);
 451
 452     const wxRect& rectButton = m_btnArea;
 453     wxRect rectTextField = m_tcArea;
 454     const bool isEnabled = IsEnabled();
 455     wxColour bgCol = GetBackgroundColour();
 456
 457     HDC hDc = GetHdcOf(dc);
 458     HWND hWnd = GetHwndOf(this);
 459
 460     wxUxThemeEngine* theme = NULL;
 461     wxUxThemeHandle hTheme(this, L"COMBOBOX");
 462
 463     if ( hTheme )
 464         theme = wxUxThemeEngine::GetIfActive();
 465
 466     wxRect borderRect(0,0,sz.x,sz.y);
 467
 468     if ( m_iFlags & wxCC_IFLAG_BUTTON_OUTSIDE )
 469     {
 470         borderRect = m_tcArea;
 471         borderRect.Inflate(1);
 472     }
 473
 474     int drawButFlags = 0;
 475
 476     if ( hTheme )
 477     {
 478         const bool useVistaComboBox = ::wxGetWinVersion() >= wxWinVersion_Vista;
 479
 480         RECT rFull;
 481         wxCopyRectToRECT(borderRect, rFull);
 482
 483         RECT rButton;
 484         wxCopyRectToRECT(rectButton, rButton);
 485
 486         RECT rBorder;
 487         wxCopyRectToRECT(borderRect, rBorder);
 488
 489         bool isNonStdButton = (m_iFlags & wxCC_IFLAG_BUTTON_OUTSIDE) ||
 490                               (m_iFlags & wxCC_IFLAG_HAS_NONSTANDARD_BUTTON);
 491
 492         //
 493         // Get some states for themed drawing
 494         int butState;
 495
 496         if ( !isEnabled )
 497         {
 498             butState = CBXS_DISABLED;
 499         }
 500         // Vista will display the drop-button as depressed always
 501         // when the popup window is visilbe
 502         else if ( (m_btnState & wxCONTROL_PRESSED) ||
 503                   (useVistaComboBox && !IsPopupWindowState(Hidden)) )
 504         {
 505             butState = CBXS_PRESSED;
 506         }
 507         else if ( m_btnState & wxCONTROL_CURRENT )
 508         {
 509             butState = CBXS_HOT;
 510         }
 511         else
 512         {
 513             butState = CBXS_NORMAL;
 514         }
 515
 516         int comboBoxPart = 0;  // For XP, use the 'default' part
 517         RECT* rUseForBg = &rBorder;
 518
 519         bool drawFullButton = false;
 520         int bgState = butState;
 521         const bool isFocused = (FindFocus() == GetMainWindowOfCompositeControl()) ? true : false;
 522
 523         if ( useVistaComboBox )
 524         {
 525             // FIXME: Either SetBackgroundColour or GetBackgroundColour
 526             //        doesn't work under Vista, so here's a temporary
 527             //        workaround.
 528             bgCol = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
 529
 530             // Draw the entire control as a single button?
 531             if ( !isNonStdButton )
 532             {
 533                 if ( HasFlag(wxCB_READONLY) )
 534                     drawFullButton = true;
 535             }
 536
 537             if ( drawFullButton )
 538             {
 539                 comboBoxPart = CP_READONLY;
 540                 rUseForBg = &rFull;
 541
 542                 // It should be safe enough to update this flag here.
 543                 m_iFlags |= wxCC_FULL_BUTTON;
 544             }
 545             else
 546             {
 547                 comboBoxPart = CP_BORDER;
 548                 m_iFlags &= ~wxCC_FULL_BUTTON;
 549
 550                 if ( isFocused )
 551                     bgState = CBB_FOCUSED;
 552                 else
 553                     bgState = CBB_NORMAL;
 554             }
 555         }
 556
 557         //
 558         // Draw parent's background, if necessary
 559         RECT* rUseForTb = NULL;
 560
 561         if ( theme->IsThemeBackgroundPartiallyTransparent( hTheme, comboBoxPart, bgState ) )
 562             rUseForTb = &rFull;
 563         else if ( m_iFlags & wxCC_IFLAG_BUTTON_OUTSIDE )
 564             rUseForTb = &rButton;
 565
 566         if ( rUseForTb )
 567             theme->DrawThemeParentBackground( hWnd, hDc, rUseForTb );
 568
 569         //
 570         // Draw the control background (including the border)
 571         if ( m_widthCustomBorder > 0 )
 572         {
 573             theme->DrawThemeBackground( hTheme, hDc, comboBoxPart, bgState, rUseForBg, NULL );
 574         }
 575         else
 576         {
 577             // No border. We can't use theme, since it cannot be relied on
 578             // to deliver borderless drawing, even with DrawThemeBackgroundEx.
 579             dc.SetBrush(bgCol);
 580             dc.SetPen(bgCol);
 581             dc.DrawRectangle(borderRect);
 582         }
 583
 584         //
 585         // Draw the drop-button
 586         if ( !isNonStdButton )
 587         {
 588             drawButFlags = Button_BitmapOnly;
 589
 590             int butPart = CP_DROPDOWNBUTTON;
 591
 592             if ( useVistaComboBox )
 593             {
 594                 if ( drawFullButton )
 595                 {
 596                     // We need to alter the button style slightly before
 597                     // drawing the actual button (but it was good above
 598                     // when background etc was done).
 599                     if ( butState == CBXS_HOT || butState == CBXS_PRESSED )
 600                         butState = CBXS_NORMAL;
 601                 }
 602
 603                 if ( m_btnSide == wxRIGHT )
 604                     butPart = CP_DROPDOWNBUTTONRIGHT;
 605                 else
 606                     butPart = CP_DROPDOWNBUTTONLEFT;
 607
 608             }
 609             theme->DrawThemeBackground( hTheme, hDc, butPart, butState, &rButton, NULL );
 610         }
 611         else if ( useVistaComboBox &&
 612                   (m_iFlags & wxCC_IFLAG_BUTTON_OUTSIDE) )
 613         {
 614             // We'll do this, because DrawThemeParentBackground
 615             // doesn't seem to be reliable on Vista.
 616             drawButFlags |= Button_PaintBackground;
 617         }
 618     }
 619     else
 620     {
 621         // Windows 2000 and earlier
 622         drawButFlags = Button_PaintBackground;
 623
 624         dc.SetBrush(bgCol);
 625         dc.SetPen(bgCol);
 626         dc.DrawRectangle(borderRect);
 627     }
 628
 629     // Button rendering (may only do the bitmap on button, depending on the flags)
 630     DrawButton( dc, rectButton, drawButFlags );
 631
 632     // Paint required portion of the custom image on the control
 633     if ( (!m_text || m_widthCustomPaint) )
 634     {
 635         wxASSERT( m_widthCustomPaint >= 0 );
 636
 637         // this is intentionally here to allow drawed rectangle's
 638         // right edge to be hidden
 639         if ( m_text )
 640             rectTextField.width = m_widthCustomPaint;
 641
 642         dc.SetFont( GetFont() );
 643
 644         dc.SetClippingRegion(rectTextField);
 645         if ( m_popupInterface )
 646             m_popupInterface->PaintComboControl(dc,rectTextField);
 647         else
 648             wxComboPopup::DefaultPaintComboControl(this,dc,rectTextField);
 649     }
 650 }
 651
 652 void wxComboCtrl::OnMouseEvent( wxMouseEvent& event )
 653 {
 654     int mx = event.m_x;
 655     bool isOnButtonArea = m_btnArea.Contains(mx,event.m_y);
 656     int handlerFlags = isOnButtonArea ? wxCC_MF_ON_BUTTON : 0;
 657
 658     if ( PreprocessMouseEvent(event,isOnButtonArea) )
 659         return;
 660
 661     if ( (m_windowStyle & (wxCC_SPECIAL_DCLICK|wxCB_READONLY)) == wxCB_READONLY )
 662     {
 663         // if no textctrl and no special double-click, then the entire control acts
 664         // as a button
 665         handlerFlags |= wxCC_MF_ON_BUTTON;
 666         if ( HandleButtonMouseEvent(event,handlerFlags) )
 667             return;
 668     }
 669     else
 670     {
 671         if ( isOnButtonArea || HasCapture() ||
 672              (m_widthCustomPaint && mx < (m_tcArea.x+m_widthCustomPaint)) )
 673         {
 674             handlerFlags |= wxCC_MF_ON_CLICK_AREA;
 675
 676             if ( HandleButtonMouseEvent(event,handlerFlags) )
 677                 return;
 678         }
 679         else if ( m_btnState )
 680         {
 681             // otherwise need to clear the hover status
 682             m_btnState = 0;
 683             RefreshRect(m_btnArea);
 684         }
 685     }
 686
 687     //
 688     // This will handle left_down and left_dclick events outside button in a Windows-like manner.
 689     // See header file for further information on this method.
 690     HandleNormalMouseEvent(event);
 691
 692 }
 693
 694 #if wxUSE_COMBOCTRL_POPUP_ANIMATION
 695 static wxUint32 GetUserPreferencesMask()
 696 {
 697     static wxUint32 userPreferencesMask = 0;
 698     static bool valueSet = false;
 699
 700     if ( valueSet )
 701         return userPreferencesMask;
 702
 703     wxRegKey* pKey = NULL;
 704     wxRegKey key1(wxRegKey::HKCU, wxT("Software\\Policies\\Microsoft\\Control Panel"));
 705     wxRegKey key2(wxRegKey::HKCU, wxT("Software\\Policies\\Microsoft\\Windows\\Control Panel"));
 706     wxRegKey key3(wxRegKey::HKCU, wxT("Control Panel\\Desktop"));
 707
 708     if ( key1.Exists() )
 709         pKey = &key1;
 710     else if ( key2.Exists() )
 711         pKey = &key2;
 712     else if ( key3.Exists() )
 713         pKey = &key3;
 714
 715     if ( pKey && pKey->Open(wxRegKey::Read) )
 716     {
 717         wxMemoryBuffer buf;
 718         if ( pKey->HasValue(wxT("UserPreferencesMask")) &&
 719              pKey->QueryValue(wxT("UserPreferencesMask"), buf) )
 720         {
 721             if ( buf.GetDataLen() >= 4 )
 722             {
 723                 wxUint32* p = (wxUint32*) buf.GetData();
 724                 userPreferencesMask = *p;
 725             }
 726         }
 727     }
 728
 729     valueSet = true;
 730
 731     return userPreferencesMask;
 732 }
 733 #endif
 734
 735 #if wxUSE_COMBOCTRL_POPUP_ANIMATION
 736 void wxComboCtrl::OnTimerEvent( wxTimerEvent& WXUNUSED(event) )
 737 {
 738     bool stopTimer = false;
 739
 740     wxWindow* popup = GetPopupControl()->GetControl();
 741
 742     // Popup was hidden before it was fully shown?
 743     if ( IsPopupWindowState(Hidden) )
 744     {
 745         stopTimer = true;
 746     }
 747     else
 748     {
 749         wxLongLong t = ::wxGetLocalTimeMillis();
 750         const wxRect& rect = m_animRect;
 751         wxWindow* win = GetPopupWindow();
 752
 753         int pos = (int) (t-m_animStart).GetLo();
 754         if ( pos < COMBOBOX_ANIMATION_DURATION )
 755         {
 756             int height = rect.height;
 757             //int h0 = rect.height;
 758             int h = (((pos*256)/COMBOBOX_ANIMATION_DURATION)*height)/256;
 759             int y = (height - h);
 760             if ( y < 0 )
 761                 y = 0;
 762
 763             if ( m_animFlags & ShowAbove )
 764             {
 765                 win->SetSize( rect.x, rect.y + height - h, rect.width, h );
 766             }
 767             else
 768             {
 769                 popup->Move( 0, -y );
 770                 win->SetSize( rect.x, rect.y, rect.width, h );
 771             }
 772         }
 773         else
 774         {
 775             stopTimer = true;
 776         }
 777     }
 778
 779     if ( stopTimer )
 780     {
 781         popup->Move( 0, 0 );
 782         m_animTimer.Stop();
 783         DoShowPopup( m_animRect, m_animFlags );
 784     }
 785 }
 786 #endif
 787
 788 #if wxUSE_COMBOCTRL_POPUP_ANIMATION
 789 bool wxComboCtrl::AnimateShow( const wxRect& rect, int flags )
 790 {
 791     if ( GetUserPreferencesMask() & wxMSW_DESKTOP_USERPREFERENCESMASK_COMBOBOXANIM )
 792     {
 793         m_animStart = ::wxGetLocalTimeMillis();
 794         m_animRect = rect;
 795         m_animFlags = flags;
 796
 797         wxWindow* win = GetPopupWindow();
 798         win->SetSize( rect.x, rect.y, rect.width, 0 );
 799         win->Show();
 800
 801         m_animTimer.SetOwner( this, wxID_ANY );
 802         m_animTimer.Start( COMBOBOX_ANIMATION_RESOLUTION, wxTIMER_CONTINUOUS );
 803
 804         OnTimerEvent(*((wxTimerEvent*)NULL));  // Event is never used, so we can give NULL
 805
 806         return false;
 807     }
 808
 809     return true;
 810 }
 811 #endif
 812
 813 wxCoord wxComboCtrl::GetNativeTextIndent() const
 814 {
 815     if ( wxUxThemeEngine::GetIfActive() )
 816         return NATIVE_TEXT_INDENT_XP;
 817     return NATIVE_TEXT_INDENT_CLASSIC;
 818 }
 819
 820 bool wxComboCtrl::IsKeyPopupToggle(const wxKeyEvent& event) const
 821 {
 822     const bool isPopupShown = IsPopupShown();
 823
 824     switch ( event.GetKeyCode() )
 825     {
 826         case WXK_F4:
 827             // F4 toggles the popup in the native comboboxes, so emulate them
 828             if ( !event.AltDown() )
 829                 return true;
 830             break;
 831
 832         case WXK_ESCAPE:
 833             if ( isPopupShown )
 834                 return true;
 835             break;
 836
 837         case WXK_DOWN:
 838         case WXK_UP:
 839             // On XP or with writable combo in Classic, arrows don't open the
 840             // popup but Alt-arrow does
 841             if ( event.AltDown() ||
 842                     ( !isPopupShown &&
 843                       HasFlag(wxCB_READONLY) &&
 844                       !wxUxThemeEngine::GetIfActive()
 845                     ) )
 846             {
 847                 return true;
 848             }
 849             break;
 850     }
 851
 852     return false;
 853 }
 854
 855 #endif // wxUSE_COMBOCTRL