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
  45 // Change to #if 1 to include tmschema.h for easier testing of theme
  46 // parameters.
  47 #if 0
  48     #include <tmschema.h>
  49     #include <VSStyle.h>
  50 #else
  51     //----------------------------------
  52     #define EP_EDITTEXT         1
  53     #define ETS_NORMAL          1
  54     #define ETS_HOT             2
  55     #define ETS_SELECTED        3
  56     #define ETS_DISABLED        4
  57     #define ETS_FOCUSED         5
  58     #define ETS_READONLY        6
  59     #define ETS_ASSIST          7
  60     #define TMT_FILLCOLOR       3802
  61     #define TMT_TEXTCOLOR       3803
  62     #define TMT_BORDERCOLOR     3801
  63     #define TMT_EDGEFILLCOLOR   3808
  64     #define TMT_BGTYPE          4001
  65
  66     #define BT_IMAGEFILE        0
  67     #define BT_BORDERFILL       1
  68
  69     #define CP_DROPDOWNBUTTON           1
  70     #define CP_BACKGROUND               2 // This and above are Vista and later only
  71     #define CP_TRANSPARENTBACKGROUND    3
  72     #define CP_BORDER                   4
  73     #define CP_READONLY                 5
  74     #define CP_DROPDOWNBUTTONRIGHT      6
  75     #define CP_DROPDOWNBUTTONLEFT       7
  76     #define CP_CUEBANNER                8
  77
  78     #define CBXS_NORMAL                 1
  79     #define CBXS_HOT                    2
  80     #define CBXS_PRESSED                3
  81     #define CBXS_DISABLED               4
  82
  83     #define CBXSR_NORMAL                1
  84     #define CBXSR_HOT                   2
  85     #define CBXSR_PRESSED               3
  86     #define CBXSR_DISABLED              4
  87
  88     #define CBXSL_NORMAL                1
  89     #define CBXSL_HOT                   2
  90     #define CBXSL_PRESSED               3
  91     #define CBXSL_DISABLED              4
  92
  93     #define CBTBS_NORMAL                1
  94     #define CBTBS_HOT                   2
  95     #define CBTBS_DISABLED              3
  96     #define CBTBS_FOCUSED               4
  97
  98     #define CBB_NORMAL                  1
  99     #define CBB_HOT                     2
 100     #define CBB_FOCUSED                 3
 101     #define CBB_DISABLED                4
 102
 103     #define CBRO_NORMAL                 1
 104     #define CBRO_HOT                    2
 105     #define CBRO_PRESSED                3
 106     #define CBRO_DISABLED               4
 107
 108     #define CBCB_NORMAL                 1
 109     #define CBCB_HOT                    2
 110     #define CBCB_PRESSED                3
 111     #define CBCB_DISABLED               4
 112
 113 #endif
 114
 115
 116 #define NATIVE_TEXT_INDENT_XP       4
 117 #define NATIVE_TEXT_INDENT_CLASSIC  2
 118
 119 #define TEXTCTRLXADJUST_XP          1
 120 #define TEXTCTRLYADJUST_XP          3
 121 #define TEXTCTRLXADJUST_CLASSIC     1
 122 #define TEXTCTRLYADJUST_CLASSIC     3
 123
 124 #define COMBOBOX_ANIMATION_RESOLUTION   10
 125
 126 #define COMBOBOX_ANIMATION_DURATION     200  // In milliseconds
 127
 128 #define wxMSW_DESKTOP_USERPREFERENCESMASK_COMBOBOXANIM    (1<<2)
 129
 130
 131 // ============================================================================
 132 // implementation
 133 // ============================================================================
 134
 135
 136 BEGIN_EVENT_TABLE(wxComboCtrl, wxComboCtrlBase)
 137     EVT_PAINT(wxComboCtrl::OnPaintEvent)
 138     EVT_MOUSE_EVENTS(wxComboCtrl::OnMouseEvent)
 139 #if wxUSE_COMBOCTRL_POPUP_ANIMATION
 140     EVT_TIMER(wxID_ANY, wxComboCtrl::OnTimerEvent)
 141 #endif
 142 END_EVENT_TABLE()
 143
 144
 145 IMPLEMENT_DYNAMIC_CLASS(wxComboCtrl, wxComboCtrlBase)
 146
 147 void wxComboCtrl::Init()
 148 {
 149 }
 150
 151 bool wxComboCtrl::Create(wxWindow *parent,
 152                             wxWindowID id,
 153                             const wxString& value,
 154                             const wxPoint& pos,
 155                             const wxSize& size,
 156                             long style,
 157                             const wxValidator& validator,
 158                             const wxString& name)
 159 {
 160
 161     // Set border
 162     long border = style & wxBORDER_MASK;
 163
 164 #if wxUSE_UXTHEME
 165     wxUxThemeEngine* theme = wxUxThemeEngine::GetIfActive();
 166 #endif
 167
 168     if ( !border )
 169     {
 170 #if wxUSE_UXTHEME
 171         if ( theme )
 172         {
 173             // For XP, have 1-width custom border, for older version use sunken
 174             border = wxBORDER_NONE;
 175             m_widthCustomBorder = 1;
 176         }
 177         else
 178 #endif
 179             border = wxBORDER_SUNKEN;
 180
 181         style = (style & ~(wxBORDER_MASK)) | border;
 182     }
 183
 184     // create main window
 185     if ( !wxComboCtrlBase::Create(parent,
 186                            id,
 187                            value,
 188                            pos,
 189                            size,
 190                            style | wxFULL_REPAINT_ON_RESIZE,
 191                            wxDefaultValidator,
 192                            name) )
 193         return false;
 194
 195 #if wxUSE_UXTHEME
 196     if ( theme )
 197     {
 198         if ( ::wxGetWinVersion() >= wxWinVersion_Vista )
 199             m_iFlags |= wxCC_BUTTON_STAYS_DOWN |wxCC_BUTTON_COVERS_BORDER;
 200     }
 201 #endif
 202
 203     if ( style & wxCC_STD_BUTTON )
 204         m_iFlags |= wxCC_POPUP_ON_MOUSE_UP;
 205
 206     // Create textctrl, if necessary
 207     CreateTextCtrl( wxNO_BORDER, validator );
 208
 209     // Add keyboard input handlers for main control and textctrl
 210     InstallInputHandlers();
 211
 212     // Prepare background for double-buffering
 213     SetBackgroundStyle( wxBG_STYLE_CUSTOM );
 214
 215     // SetInitialSize should be called last
 216     SetInitialSize(size);
 217
 218     return true;
 219 }
 220
 221 wxComboCtrl::~wxComboCtrl()
 222 {
 223 }
 224
 225 void wxComboCtrl::OnThemeChange()
 226 {
 227     // there doesn't seem to be any way to get the text colour using themes
 228     // API: TMT_TEXTCOLOR doesn't work neither for EDIT nor COMBOBOX
 229     SetForegroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT));
 230
 231 #if wxUSE_UXTHEME
 232     wxUxThemeEngine * const theme = wxUxThemeEngine::GetIfActive();
 233     if ( theme )
 234     {
 235         // NB: use EDIT, not COMBOBOX (the latter works in XP but not Vista)
 236         wxUxThemeHandle hTheme(this, L"EDIT");
 237         COLORREF col;
 238         HRESULT hr = theme->GetThemeColor
 239                             (
 240                                 hTheme,
 241                                 EP_EDITTEXT,
 242                                 ETS_NORMAL,
 243                                 TMT_FILLCOLOR,
 244                                 &col
 245                             );
 246         if ( SUCCEEDED(hr) )
 247         {
 248             SetBackgroundColour(wxRGBToColour(col));
 249
 250             // skip the call below
 251             return;
 252         }
 253
 254         wxLogApiError(_T("GetThemeColor(EDIT, ETS_NORMAL, TMT_FILLCOLOR)"), hr);
 255     }
 256 #endif
 257
 258     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
 259 }
 260
 261 void wxComboCtrl::OnResize()
 262 {
 263     //
 264     // Recalculates button and textctrl areas
 265
 266     int textCtrlXAdjust;
 267     int textCtrlYAdjust;
 268
 269 #if wxUSE_UXTHEME
 270     if ( wxUxThemeEngine::GetIfActive() )
 271     {
 272         textCtrlXAdjust = TEXTCTRLXADJUST_XP;
 273         textCtrlYAdjust = TEXTCTRLYADJUST_XP;
 274     }
 275     else
 276 #endif
 277     {
 278         textCtrlXAdjust = TEXTCTRLXADJUST_CLASSIC;
 279         textCtrlYAdjust = TEXTCTRLYADJUST_CLASSIC;
 280     }
 281
 282     // Technically Classic Windows style combo has more narrow button,
 283     // but the native renderer doesn't paint it well like that.
 284     int btnWidth = 17;
 285     CalculateAreas(btnWidth);
 286
 287     // Position textctrl using standard routine
 288     PositionTextCtrl(textCtrlXAdjust,textCtrlYAdjust);
 289 }
 290
 291 // Draws non-XP GUI dotted line around the focus area
 292 static void wxMSWDrawFocusRect( wxDC& dc, const wxRect& rect )
 293 {
 294 #if !defined(__WXWINCE__)
 295     /*
 296     RECT mswRect;
 297     mswRect.left = rect.x;
 298     mswRect.top = rect.y;
 299     mswRect.right = rect.x + rect.width;
 300     mswRect.bottom = rect.y + rect.height;
 301     HDC hdc = (HDC) dc.GetHDC();
 302     SetMapMode(hdc,MM_TEXT); // Just in case...
 303     DrawFocusRect(hdc,&mswRect);
 304     */
 305     // FIXME: Use DrawFocusRect code above (currently it draws solid line
 306     //   for caption focus but works ok for other stuff).
 307     //   Also, this code below may not work in future wx versions, since
 308     //   it employs wxCAP_BUTT hack to have line of width 1.
 309     dc.SetLogicalFunction(wxINVERT);
 310
 311     wxPen pen(*wxBLACK,1,wxDOT);
 312     pen.SetCap(wxCAP_BUTT);
 313     dc.SetPen(pen);
 314     dc.SetBrush(*wxTRANSPARENT_BRUSH);
 315
 316     dc.DrawRectangle(rect);
 317
 318     dc.SetLogicalFunction(wxCOPY);
 319 #else
 320     dc.SetLogicalFunction(wxINVERT);
 321
 322     dc.SetPen(wxPen(*wxBLACK,1,wxDOT));
 323     dc.SetBrush(*wxTRANSPARENT_BRUSH);
 324
 325     dc.DrawRectangle(rect);
 326
 327     dc.SetLogicalFunction(wxCOPY);
 328 #endif
 329 }
 330
 331 // draw focus background on area in a way typical on platform
 332 void
 333 wxComboCtrl::PrepareBackground( wxDC& dc, const wxRect& rect, int flags ) const
 334 {
 335 #if wxUSE_UXTHEME
 336     wxUxThemeHandle hTheme(this, L"COMBOBOX");
 337 #endif
 338
 339     wxSize sz = GetClientSize();
 340     bool isEnabled;
 341     bool doDrawFocusRect; // also selected
 342
 343     // For smaller size control (and for disabled background) use less spacing
 344     int focusSpacingX;
 345     int focusSpacingY;
 346
 347     if ( !(flags & wxCONTROL_ISSUBMENU) )
 348     {
 349         // Drawing control
 350         isEnabled = IsEnabled();
 351         doDrawFocusRect = ShouldDrawFocus();
 352
 353 #if wxUSE_UXTHEME
 354         // Windows-style: for smaller size control (and for disabled background) use less spacing
 355         if ( hTheme )
 356         {
 357             // WinXP  Theme
 358             focusSpacingX = isEnabled ? 2 : 1;
 359             focusSpacingY = sz.y > (GetCharHeight()+2) && isEnabled ? 2 : 1;
 360         }
 361         else
 362 #endif
 363         {
 364             // Classic Theme
 365             if ( isEnabled )
 366             {
 367                 focusSpacingX = 1;
 368                 focusSpacingY = 1;
 369             }
 370             else
 371             {
 372                 focusSpacingX = 0;
 373                 focusSpacingY = 0;
 374             }
 375         }
 376     }
 377     else
 378     {
 379         // Drawing a list item
 380         isEnabled = true; // they are never disabled
 381         doDrawFocusRect = flags & wxCONTROL_SELECTED ? true : false;
 382
 383         focusSpacingX = 0;
 384         focusSpacingY = 0;
 385     }
 386
 387     // Set the background sub-rectangle for selection, disabled etc
 388     wxRect selRect(rect);
 389     selRect.y += focusSpacingY;
 390     selRect.height -= (focusSpacingY*2);
 391
 392     int wcp = 0;
 393
 394     if ( !(flags & wxCONTROL_ISSUBMENU) )
 395         wcp += m_widthCustomPaint;
 396
 397     selRect.x += wcp + focusSpacingX;
 398     selRect.width -= wcp + (focusSpacingX*2);
 399
 400     //wxUxThemeEngine* theme = (wxUxThemeEngine*) NULL;
 401     //if ( hTheme )
 402     //    theme = wxUxThemeEngine::GetIfActive();
 403
 404     wxColour bgCol;
 405     bool doDrawDottedEdge = false;
 406     bool doDrawSelRect = true;
 407
 408     // TODO: doDrawDottedEdge = true when focus has arrived to control via tab.
 409     //       (and other cases which are not that apparent).
 410
 411     if ( isEnabled )
 412     {
 413         // If popup is hidden and this control is focused,
 414         // then draw the focus-indicator (selbgcolor background etc.).
 415         if ( doDrawFocusRect )
 416         {
 417             // NB: We can't really use XP visual styles to get TMT_TEXTCOLOR since
 418             //     it is not properly defined for combo boxes. Instead, they expect
 419             //     you to use DrawThemeText.
 420             //
 421             //    Here is, however, sample code how to get theme colours:
 422             //
 423             //    COLORREF cref;
 424             //    theme->GetThemeColor(hTheme,EP_EDITTEXT,ETS_NORMAL,TMT_TEXTCOLOR,&cref);
 425             //    dc.SetTextForeground( wxRGBToColour(cref) );
 426             if ( (m_iFlags & wxCC_FULL_BUTTON) && !(flags & wxCONTROL_ISSUBMENU) )
 427             {
 428                 // Vista style read-only combo
 429                 doDrawSelRect = false;
 430                 doDrawDottedEdge = true;
 431             }
 432             else
 433             {
 434                 dc.SetTextForeground( wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHTTEXT) );
 435                 bgCol = wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHT);
 436             }
 437         }
 438         else
 439         {
 440             dc.SetTextForeground( wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT) );
 441             bgCol = GetBackgroundColour();
 442             doDrawSelRect = false;
 443         }
 444     }
 445     else
 446     {
 447         dc.SetTextForeground( wxSystemSettings::GetColour(wxSYS_COLOUR_GRAYTEXT) );
 448         bgCol = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
 449     }
 450
 451     dc.SetBrush(bgCol);
 452     if ( doDrawSelRect )
 453     {
 454         dc.SetPen(bgCol);
 455         dc.DrawRectangle(selRect);
 456     }
 457
 458     if ( doDrawDottedEdge )
 459         wxMSWDrawFocusRect(dc, selRect);
 460
 461     // Don't clip exactly to the selection rectangle so we can draw
 462     // to the non-selected area in front of it.
 463     wxRect clipRect(rect.x,rect.y,
 464                     (selRect.x+selRect.width)-rect.x-1,rect.height);
 465     dc.SetClippingRegion(clipRect);
 466 }
 467
 468 void wxComboCtrl::OnPaintEvent( wxPaintEvent& WXUNUSED(event) )
 469 {
 470     // TODO: Convert drawing in this function to Windows API Code
 471
 472     wxSize sz = GetClientSize();
 473     wxAutoBufferedPaintDC dc(this);
 474
 475     const wxRect& rectButton = m_btnArea;
 476     wxRect rectTextField = m_tcArea;
 477     const bool isEnabled = IsEnabled();
 478     wxColour bgCol = GetBackgroundColour();
 479
 480     HDC hDc = GetHdcOf(dc);
 481     HWND hWnd = GetHwndOf(this);
 482
 483 #if wxUSE_UXTHEME
 484     wxUxThemeEngine* theme = NULL;
 485     wxUxThemeHandle hTheme(this, L"COMBOBOX");
 486
 487     if ( hTheme )
 488         theme = wxUxThemeEngine::GetIfActive();
 489 #endif
 490
 491     wxRect borderRect(0,0,sz.x,sz.y);
 492
 493     if ( m_iFlags & wxCC_IFLAG_BUTTON_OUTSIDE )
 494     {
 495         borderRect = m_tcArea;
 496         borderRect.Inflate(1);
 497     }
 498
 499     int drawButFlags = 0;
 500
 501 #if wxUSE_UXTHEME
 502     if ( hTheme )
 503     {
 504         const bool useVistaComboBox = ::wxGetWinVersion() >= wxWinVersion_Vista;
 505
 506         RECT rFull;
 507         wxCopyRectToRECT(borderRect, rFull);
 508
 509         RECT rButton;
 510         wxCopyRectToRECT(rectButton, rButton);
 511
 512         RECT rBorder;
 513         wxCopyRectToRECT(borderRect, rBorder);
 514
 515         bool isNonStdButton = (m_iFlags & wxCC_IFLAG_BUTTON_OUTSIDE) ||
 516                               (m_iFlags & wxCC_IFLAG_HAS_NONSTANDARD_BUTTON);
 517
 518         //
 519         // Get some states for themed drawing
 520         int butState;
 521
 522         if ( !isEnabled )
 523         {
 524             butState = CBXS_DISABLED;
 525         }
 526         // Vista will display the drop-button as depressed always
 527         // when the popup window is visilbe
 528         else if ( (m_btnState & wxCONTROL_PRESSED) ||
 529                   (useVistaComboBox && !IsPopupWindowState(Hidden)) )
 530         {
 531             butState = CBXS_PRESSED;
 532         }
 533         else if ( m_btnState & wxCONTROL_CURRENT )
 534         {
 535             butState = CBXS_HOT;
 536         }
 537         else
 538         {
 539             butState = CBXS_NORMAL;
 540         }
 541
 542         int comboBoxPart = 0;  // For XP, use the 'default' part
 543         RECT* rUseForBg = &rBorder;
 544
 545         bool drawFullButton = false;
 546         int bgState = butState;
 547         const bool isFocused = (FindFocus() == GetMainWindowOfCompositeControl()) ? true : false;
 548
 549         if ( useVistaComboBox )
 550         {
 551             // FIXME: Either SetBackgroundColour or GetBackgroundColour
 552             //        doesn't work under Vista, so here's a temporary
 553             //        workaround.
 554             bgCol = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
 555
 556             // Draw the entire control as a single button?
 557             if ( !isNonStdButton )
 558             {
 559                 if ( HasFlag(wxCB_READONLY) )
 560                     drawFullButton = true;
 561             }
 562
 563             if ( drawFullButton )
 564             {
 565                 comboBoxPart = CP_READONLY;
 566                 rUseForBg = &rFull;
 567
 568                 // It should be safe enough to update this flag here.
 569                 m_iFlags |= wxCC_FULL_BUTTON;
 570             }
 571             else
 572             {
 573                 comboBoxPart = CP_BORDER;
 574                 m_iFlags &= ~wxCC_FULL_BUTTON;
 575
 576                 if ( isFocused )
 577                     bgState = CBB_FOCUSED;
 578                 else
 579                     bgState = CBB_NORMAL;
 580             }
 581         }
 582
 583         //
 584         // Draw parent's background, if necessary
 585         RECT* rUseForTb = NULL;
 586
 587         if ( theme->IsThemeBackgroundPartiallyTransparent( hTheme, comboBoxPart, bgState ) )
 588             rUseForTb = &rFull;
 589         else if ( m_iFlags & wxCC_IFLAG_BUTTON_OUTSIDE )
 590             rUseForTb = &rButton;
 591
 592         if ( rUseForTb )
 593             theme->DrawThemeParentBackground( hWnd, hDc, rUseForTb );
 594
 595         //
 596         // Draw the control background (including the border)
 597         if ( m_widthCustomBorder > 0 )
 598         {
 599             theme->DrawThemeBackground( hTheme, hDc, comboBoxPart, bgState, rUseForBg, NULL );
 600         }
 601         else
 602         {
 603             // No border. We can't use theme, since it cannot be relied on
 604             // to deliver borderless drawing, even with DrawThemeBackgroundEx.
 605             dc.SetBrush(bgCol);
 606             dc.SetPen(bgCol);
 607             dc.DrawRectangle(borderRect);
 608         }
 609
 610         //
 611         // Draw the drop-button
 612         if ( !isNonStdButton )
 613         {
 614             drawButFlags = Button_BitmapOnly;
 615
 616             int butPart = CP_DROPDOWNBUTTON;
 617
 618             if ( useVistaComboBox )
 619             {
 620                 if ( drawFullButton )
 621                 {
 622                     // We need to alter the button style slightly before
 623                     // drawing the actual button (but it was good above
 624                     // when background etc was done).
 625                     if ( butState == CBXS_HOT || butState == CBXS_PRESSED )
 626                         butState = CBXS_NORMAL;
 627                 }
 628
 629                 if ( m_btnSide == wxRIGHT )
 630                     butPart = CP_DROPDOWNBUTTONRIGHT;
 631                 else
 632                     butPart = CP_DROPDOWNBUTTONLEFT;
 633
 634             }
 635             theme->DrawThemeBackground( hTheme, hDc, butPart, butState, &rButton, NULL );
 636         }
 637         else if ( useVistaComboBox &&
 638                   (m_iFlags & wxCC_IFLAG_BUTTON_OUTSIDE) )
 639         {
 640             // We'll do this, because DrawThemeParentBackground
 641             // doesn't seem to be reliable on Vista.
 642             drawButFlags |= Button_PaintBackground;
 643         }
 644     }
 645     else
 646 #endif
 647     {
 648         // Windows 2000 and earlier
 649         drawButFlags = Button_PaintBackground;
 650
 651         dc.SetBrush(bgCol);
 652         dc.SetPen(bgCol);
 653         dc.DrawRectangle(borderRect);
 654     }
 655
 656     // Button rendering (may only do the bitmap on button, depending on the flags)
 657     DrawButton( dc, rectButton, drawButFlags );
 658
 659     // Paint required portion of the custom image on the control
 660     if ( (!m_text || m_widthCustomPaint) )
 661     {
 662         wxASSERT( m_widthCustomPaint >= 0 );
 663
 664         // this is intentionally here to allow drawed rectangle's
 665         // right edge to be hidden
 666         if ( m_text )
 667             rectTextField.width = m_widthCustomPaint;
 668
 669         dc.SetFont( GetFont() );
 670
 671         dc.SetClippingRegion(rectTextField);
 672         if ( m_popupInterface )
 673             m_popupInterface->PaintComboControl(dc,rectTextField);
 674         else
 675             wxComboPopup::DefaultPaintComboControl(this,dc,rectTextField);
 676     }
 677 }
 678
 679 void wxComboCtrl::OnMouseEvent( wxMouseEvent& event )
 680 {
 681     int mx = event.m_x;
 682     bool isOnButtonArea = m_btnArea.Contains(mx,event.m_y);
 683     int handlerFlags = isOnButtonArea ? wxCC_MF_ON_BUTTON : 0;
 684
 685     if ( PreprocessMouseEvent(event,isOnButtonArea) )
 686         return;
 687
 688     if ( (m_windowStyle & (wxCC_SPECIAL_DCLICK|wxCB_READONLY)) == wxCB_READONLY )
 689     {
 690         // if no textctrl and no special double-click, then the entire control acts
 691         // as a button
 692         handlerFlags |= wxCC_MF_ON_BUTTON;
 693         if ( HandleButtonMouseEvent(event,handlerFlags) )
 694             return;
 695     }
 696     else
 697     {
 698         if ( isOnButtonArea || HasCapture() ||
 699              (m_widthCustomPaint && mx < (m_tcArea.x+m_widthCustomPaint)) )
 700         {
 701             handlerFlags |= wxCC_MF_ON_CLICK_AREA;
 702
 703             if ( HandleButtonMouseEvent(event,handlerFlags) )
 704                 return;
 705         }
 706         else if ( m_btnState )
 707         {
 708             // otherwise need to clear the hover status
 709             m_btnState = 0;
 710             RefreshRect(m_btnArea);
 711         }
 712     }
 713
 714     //
 715     // This will handle left_down and left_dclick events outside button in a Windows-like manner.
 716     // See header file for further information on this method.
 717     HandleNormalMouseEvent(event);
 718
 719 }
 720
 721 #if wxUSE_COMBOCTRL_POPUP_ANIMATION
 722 static wxUint32 GetUserPreferencesMask()
 723 {
 724     static wxUint32 userPreferencesMask = 0;
 725     static bool valueSet = false;
 726
 727     if ( valueSet )
 728         return userPreferencesMask;
 729
 730     wxRegKey* pKey = NULL;
 731     wxRegKey key1(wxRegKey::HKCU, wxT("Software\\Policies\\Microsoft\\Control Panel"));
 732     wxRegKey key2(wxRegKey::HKCU, wxT("Software\\Policies\\Microsoft\\Windows\\Control Panel"));
 733     wxRegKey key3(wxRegKey::HKCU, wxT("Control Panel\\Desktop"));
 734
 735     if ( key1.Exists() )
 736         pKey = &key1;
 737     else if ( key2.Exists() )
 738         pKey = &key2;
 739     else if ( key3.Exists() )
 740         pKey = &key3;
 741
 742     if ( pKey && pKey->Open(wxRegKey::Read) )
 743     {
 744         wxMemoryBuffer buf;
 745         if ( pKey->HasValue(wxT("UserPreferencesMask")) &&
 746              pKey->QueryValue(wxT("UserPreferencesMask"), buf) )
 747         {
 748             if ( buf.GetDataLen() >= 4 )
 749             {
 750                 wxUint32* p = (wxUint32*) buf.GetData();
 751                 userPreferencesMask = *p;
 752             }
 753         }
 754     }
 755
 756     valueSet = true;
 757
 758     return userPreferencesMask;
 759 }
 760 #endif
 761
 762 #if wxUSE_COMBOCTRL_POPUP_ANIMATION
 763 void wxComboCtrl::OnTimerEvent( wxTimerEvent& WXUNUSED(event) )
 764 {
 765     bool stopTimer = false;
 766
 767     wxWindow* popup = GetPopupControl()->GetControl();
 768
 769     // Popup was hidden before it was fully shown?
 770     if ( IsPopupWindowState(Hidden) )
 771     {
 772         stopTimer = true;
 773     }
 774     else
 775     {
 776         wxLongLong t = ::wxGetLocalTimeMillis();
 777         const wxRect& rect = m_animRect;
 778         wxWindow* win = GetPopupWindow();
 779
 780         int pos = (int) (t-m_animStart).GetLo();
 781         if ( pos < COMBOBOX_ANIMATION_DURATION )
 782         {
 783             int height = rect.height;
 784             //int h0 = rect.height;
 785             int h = (((pos*256)/COMBOBOX_ANIMATION_DURATION)*height)/256;
 786             int y = (height - h);
 787             if ( y < 0 )
 788                 y = 0;
 789
 790             if ( m_animFlags & ShowAbove )
 791             {
 792                 win->SetSize( rect.x, rect.y + height - h, rect.width, h );
 793             }
 794             else
 795             {
 796                 popup->Move( 0, -y );
 797                 win->SetSize( rect.x, rect.y, rect.width, h );
 798             }
 799         }
 800         else
 801         {
 802             stopTimer = true;
 803         }
 804     }
 805
 806     if ( stopTimer )
 807     {
 808         popup->Move( 0, 0 );
 809         m_animTimer.Stop();
 810         DoShowPopup( m_animRect, m_animFlags );
 811     }
 812 }
 813 #endif
 814
 815 #if wxUSE_COMBOCTRL_POPUP_ANIMATION
 816 bool wxComboCtrl::AnimateShow( const wxRect& rect, int flags )
 817 {
 818     if ( GetUserPreferencesMask() & wxMSW_DESKTOP_USERPREFERENCESMASK_COMBOBOXANIM )
 819     {
 820         m_animStart = ::wxGetLocalTimeMillis();
 821         m_animRect = rect;
 822         m_animFlags = flags;
 823
 824         wxWindow* win = GetPopupWindow();
 825         win->SetSize( rect.x, rect.y, rect.width, 0 );
 826         win->Show();
 827
 828         m_animTimer.SetOwner( this, wxID_ANY );
 829         m_animTimer.Start( COMBOBOX_ANIMATION_RESOLUTION, wxTIMER_CONTINUOUS );
 830
 831         OnTimerEvent(*((wxTimerEvent*)NULL));  // Event is never used, so we can give NULL
 832
 833         return false;
 834     }
 835
 836     return true;
 837 }
 838 #endif
 839
 840 wxCoord wxComboCtrl::GetNativeTextIndent() const
 841 {
 842 #if wxUSE_UXTHEME
 843     if ( wxUxThemeEngine::GetIfActive() )
 844         return NATIVE_TEXT_INDENT_XP;
 845 #endif
 846     return NATIVE_TEXT_INDENT_CLASSIC;
 847 }
 848
 849 bool wxComboCtrl::IsKeyPopupToggle(const wxKeyEvent& event) const
 850 {
 851     const bool isPopupShown = IsPopupShown();
 852
 853     switch ( event.GetKeyCode() )
 854     {
 855         case WXK_F4:
 856             // F4 toggles the popup in the native comboboxes, so emulate them
 857             if ( !event.AltDown() )
 858                 return true;
 859             break;
 860
 861         case WXK_ESCAPE:
 862             if ( isPopupShown )
 863                 return true;
 864             break;
 865
 866         case WXK_DOWN:
 867         case WXK_UP:
 868             // On XP or with writable combo in Classic, arrows don't open the
 869             // popup but Alt-arrow does
 870             if ( event.AltDown() ||
 871                     ( !isPopupShown &&
 872                       HasFlag(wxCB_READONLY)
 873 #if wxUSE_UXTHEME
 874                       && !wxUxThemeEngine::GetIfActive()
 875 #endif
 876                     ) )
 877             {
 878                 return true;
 879             }
 880             break;
 881     }
 882
 883     return false;
 884 }
 885
 886 #endif // wxUSE_COMBOCTRL