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 TEXTCTRLXADJUST_XP          1
 121 #define TEXTCTRLYADJUST_XP          3
 122 #define TEXTCTRLXADJUST_CLASSIC     1
 123 #define TEXTCTRLYADJUST_CLASSIC     3
 124
 125 #define COMBOBOX_ANIMATION_RESOLUTION   10
 126
 127 #define COMBOBOX_ANIMATION_DURATION     200  // In milliseconds
 128
 129 #define wxMSW_DESKTOP_USERPREFERENCESMASK_COMBOBOXANIM    (1<<2)
 130
 131
 132 // ============================================================================
 133 // implementation
 134 // ============================================================================
 135
 136
 137 BEGIN_EVENT_TABLE(wxComboCtrl, wxComboCtrlBase)
 138     EVT_PAINT(wxComboCtrl::OnPaintEvent)
 139     EVT_MOUSE_EVENTS(wxComboCtrl::OnMouseEvent)
 140 #if wxUSE_COMBOCTRL_POPUP_ANIMATION
 141     EVT_TIMER(wxID_ANY, wxComboCtrl::OnTimerEvent)
 142 #endif
 143 END_EVENT_TABLE()
 144
 145
 146 IMPLEMENT_DYNAMIC_CLASS(wxComboCtrl, wxComboCtrlBase)
 147
 148 void wxComboCtrl::Init()
 149 {
 150 }
 151
 152 bool wxComboCtrl::Create(wxWindow *parent,
 153                             wxWindowID id,
 154                             const wxString& value,
 155                             const wxPoint& pos,
 156                             const wxSize& size,
 157                             long style,
 158                             const wxValidator& validator,
 159                             const wxString& name)
 160 {
 161
 162     // Set border
 163     long border = style & wxBORDER_MASK;
 164
 165 #if wxUSE_UXTHEME
 166     wxUxThemeEngine* theme = wxUxThemeEngine::GetIfActive();
 167 #endif
 168
 169     if ( !border )
 170     {
 171 #if wxUSE_UXTHEME
 172         if ( theme )
 173         {
 174             // For XP, have 1-width custom border, for older version use sunken
 175             border = wxBORDER_NONE;
 176             m_widthCustomBorder = 1;
 177         }
 178         else
 179 #endif
 180             border = wxBORDER_SUNKEN;
 181
 182         style = (style & ~(wxBORDER_MASK)) | border;
 183     }
 184
 185     // create main window
 186     if ( !wxComboCtrlBase::Create(parent,
 187                            id,
 188                            value,
 189                            pos,
 190                            size,
 191                            style | wxFULL_REPAINT_ON_RESIZE,
 192                            wxDefaultValidator,
 193                            name) )
 194         return false;
 195
 196 #if wxUSE_UXTHEME
 197     if ( theme )
 198     {
 199         if ( ::wxGetWinVersion() >= wxWinVersion_Vista )
 200             m_iFlags |= wxCC_BUTTON_STAYS_DOWN |wxCC_BUTTON_COVERS_BORDER;
 201     }
 202 #endif
 203
 204     if ( style & wxCC_STD_BUTTON )
 205         m_iFlags |= wxCC_POPUP_ON_MOUSE_UP;
 206
 207     // Create textctrl, if necessary
 208     CreateTextCtrl( wxNO_BORDER, validator );
 209
 210     // Add keyboard input handlers for main control and textctrl
 211     InstallInputHandlers();
 212
 213     // Prepare background for double-buffering
 214     SetBackgroundStyle( wxBG_STYLE_CUSTOM );
 215
 216     // SetInitialSize should be called last
 217     SetInitialSize(size);
 218
 219     return true;
 220 }
 221
 222 wxComboCtrl::~wxComboCtrl()
 223 {
 224 }
 225
 226 void wxComboCtrl::OnThemeChange()
 227 {
 228     // there doesn't seem to be any way to get the text colour using themes
 229     // API: TMT_TEXTCOLOR doesn't work neither for EDIT nor COMBOBOX
 230     SetForegroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT));
 231
 232 #if wxUSE_UXTHEME
 233     wxUxThemeEngine * const theme = wxUxThemeEngine::GetIfActive();
 234     if ( theme )
 235     {
 236         // NB: use EDIT, not COMBOBOX (the latter works in XP but not Vista)
 237         wxUxThemeHandle hTheme(this, L"EDIT");
 238         COLORREF col;
 239         HRESULT hr = theme->GetThemeColor
 240                             (
 241                                 hTheme,
 242                                 EP_EDITTEXT,
 243                                 ETS_NORMAL,
 244                                 TMT_FILLCOLOR,
 245                                 &col
 246                             );
 247         if ( SUCCEEDED(hr) )
 248         {
 249             SetBackgroundColour(wxRGBToColour(col));
 250
 251             // skip the call below
 252             return;
 253         }
 254
 255         wxLogApiError(_T("GetThemeColor(EDIT, ETS_NORMAL, TMT_FILLCOLOR)"), hr);
 256     }
 257 #endif
 258
 259     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
 260 }
 261
 262 void wxComboCtrl::OnResize()
 263 {
 264     //
 265     // Recalculates button and textctrl areas
 266
 267     int textCtrlXAdjust;
 268     int textCtrlYAdjust;
 269
 270 #if wxUSE_UXTHEME
 271     if ( wxUxThemeEngine::GetIfActive() )
 272     {
 273         textCtrlXAdjust = TEXTCTRLXADJUST_XP;
 274         textCtrlYAdjust = TEXTCTRLYADJUST_XP;
 275     }
 276     else
 277 #endif
 278     {
 279         textCtrlXAdjust = TEXTCTRLXADJUST_CLASSIC;
 280         textCtrlYAdjust = TEXTCTRLYADJUST_CLASSIC;
 281     }
 282
 283     // Technically Classic Windows style combo has more narrow button,
 284     // but the native renderer doesn't paint it well like that.
 285     int btnWidth = 17;
 286     CalculateAreas(btnWidth);
 287
 288     // Position textctrl using standard routine
 289     PositionTextCtrl(textCtrlXAdjust,textCtrlYAdjust);
 290 }
 291
 292 // Draws non-XP GUI dotted line around the focus area
 293 static void wxMSWDrawFocusRect( wxDC& dc, const wxRect& rect )
 294 {
 295 #if !defined(__WXWINCE__)
 296     /*
 297     RECT mswRect;
 298     mswRect.left = rect.x;
 299     mswRect.top = rect.y;
 300     mswRect.right = rect.x + rect.width;
 301     mswRect.bottom = rect.y + rect.height;
 302     HDC hdc = (HDC) dc.GetHDC();
 303     SetMapMode(hdc,MM_TEXT); // Just in case...
 304     DrawFocusRect(hdc,&mswRect);
 305     */
 306     // FIXME: Use DrawFocusRect code above (currently it draws solid line
 307     //   for caption focus but works ok for other stuff).
 308     //   Also, this code below may not work in future wx versions, since
 309     //   it employs wxCAP_BUTT hack to have line of width 1.
 310     dc.SetLogicalFunction(wxINVERT);
 311
 312     wxPen pen(*wxBLACK, 1, wxPENSTYLE_DOT);
 313     pen.SetCap(wxCAP_BUTT);
 314     dc.SetPen(pen);
 315     dc.SetBrush(*wxTRANSPARENT_BRUSH);
 316
 317     dc.DrawRectangle(rect);
 318
 319     dc.SetLogicalFunction(wxCOPY);
 320 #else
 321     dc.SetLogicalFunction(wxINVERT);
 322
 323     dc.SetPen(wxPen(*wxBLACK,1,wxDOT));
 324     dc.SetBrush(*wxTRANSPARENT_BRUSH);
 325
 326     dc.DrawRectangle(rect);
 327
 328     dc.SetLogicalFunction(wxCOPY);
 329 #endif
 330 }
 331
 332 // draw focus background on area in a way typical on platform
 333 void
 334 wxComboCtrl::PrepareBackground( wxDC& dc, const wxRect& rect, int flags ) const
 335 {
 336 #if wxUSE_UXTHEME
 337     wxUxThemeHandle hTheme(this, L"COMBOBOX");
 338 #endif
 339
 340     wxSize sz = GetClientSize();
 341     bool isEnabled;
 342     bool doDrawFocusRect; // also selected
 343
 344     // For smaller size control (and for disabled background) use less spacing
 345     int focusSpacingX;
 346     int focusSpacingY;
 347
 348     if ( !(flags & wxCONTROL_ISSUBMENU) )
 349     {
 350         // Drawing control
 351         isEnabled = IsEnabled();
 352         doDrawFocusRect = ShouldDrawFocus();
 353
 354 #if wxUSE_UXTHEME
 355         // Windows-style: for smaller size control (and for disabled background) use less spacing
 356         if ( hTheme )
 357         {
 358             // WinXP  Theme
 359             focusSpacingX = isEnabled ? 2 : 1;
 360             focusSpacingY = sz.y > (GetCharHeight()+2) && isEnabled ? 2 : 1;
 361         }
 362         else
 363 #endif
 364         {
 365             // Classic Theme
 366             if ( isEnabled )
 367             {
 368                 focusSpacingX = 1;
 369                 focusSpacingY = 1;
 370             }
 371             else
 372             {
 373                 focusSpacingX = 0;
 374                 focusSpacingY = 0;
 375             }
 376         }
 377     }
 378     else
 379     {
 380         // Drawing a list item
 381         isEnabled = true; // they are never disabled
 382         doDrawFocusRect = flags & wxCONTROL_SELECTED ? true : false;
 383
 384         focusSpacingX = 0;
 385         focusSpacingY = 0;
 386     }
 387
 388     // Set the background sub-rectangle for selection, disabled etc
 389     wxRect selRect(rect);
 390     selRect.y += focusSpacingY;
 391     selRect.height -= (focusSpacingY*2);
 392
 393     int wcp = 0;
 394
 395     if ( !(flags & wxCONTROL_ISSUBMENU) )
 396         wcp += m_widthCustomPaint;
 397
 398     selRect.x += wcp + focusSpacingX;
 399     selRect.width -= wcp + (focusSpacingX*2);
 400
 401     //wxUxThemeEngine* theme = (wxUxThemeEngine*) NULL;
 402     //if ( hTheme )
 403     //    theme = wxUxThemeEngine::GetIfActive();
 404
 405     wxColour bgCol;
 406     bool doDrawDottedEdge = false;
 407     bool doDrawSelRect = true;
 408
 409     // TODO: doDrawDottedEdge = true when focus has arrived to control via tab.
 410     //       (and other cases which are not that apparent).
 411
 412     if ( isEnabled )
 413     {
 414         // If popup is hidden and this control is focused,
 415         // then draw the focus-indicator (selbgcolor background etc.).
 416         if ( doDrawFocusRect )
 417         {
 418             // NB: We can't really use XP visual styles to get TMT_TEXTCOLOR since
 419             //     it is not properly defined for combo boxes. Instead, they expect
 420             //     you to use DrawThemeText.
 421             //
 422             //    Here is, however, sample code how to get theme colours:
 423             //
 424             //    COLORREF cref;
 425             //    theme->GetThemeColor(hTheme,EP_EDITTEXT,ETS_NORMAL,TMT_TEXTCOLOR,&cref);
 426             //    dc.SetTextForeground( wxRGBToColour(cref) );
 427             if ( (m_iFlags & wxCC_FULL_BUTTON) && !(flags & wxCONTROL_ISSUBMENU) )
 428             {
 429                 // Vista style read-only combo
 430                 doDrawSelRect = false;
 431                 doDrawDottedEdge = true;
 432             }
 433             else
 434             {
 435                 dc.SetTextForeground( wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHTTEXT) );
 436                 bgCol = wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHT);
 437             }
 438         }
 439         else
 440         {
 441             dc.SetTextForeground( wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT) );
 442             bgCol = GetBackgroundColour();
 443             doDrawSelRect = false;
 444         }
 445     }
 446     else
 447     {
 448         dc.SetTextForeground( wxSystemSettings::GetColour(wxSYS_COLOUR_GRAYTEXT) );
 449         bgCol = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
 450     }
 451
 452     dc.SetBrush(bgCol);
 453     if ( doDrawSelRect )
 454     {
 455         dc.SetPen(bgCol);
 456         dc.DrawRectangle(selRect);
 457     }
 458
 459     if ( doDrawDottedEdge )
 460         wxMSWDrawFocusRect(dc, selRect);
 461
 462     // Don't clip exactly to the selection rectangle so we can draw
 463     // to the non-selected area in front of it.
 464     wxRect clipRect(rect.x,rect.y,
 465                     (selRect.x+selRect.width)-rect.x-1,rect.height);
 466     dc.SetClippingRegion(clipRect);
 467 }
 468
 469 void wxComboCtrl::OnPaintEvent( wxPaintEvent& WXUNUSED(event) )
 470 {
 471     // TODO: Convert drawing in this function to Windows API Code
 472
 473     wxSize sz = GetClientSize();
 474     wxAutoBufferedPaintDC dc(this);
 475
 476     const wxRect& rectButton = m_btnArea;
 477     wxRect rectTextField = m_tcArea;
 478     wxColour bgCol = GetBackgroundColour();
 479
 480 #if wxUSE_UXTHEME
 481     const bool isEnabled = IsEnabled();
 482
 483     wxMSWDCImpl *impl = (wxMSWDCImpl*) dc.GetImpl();
 484     HDC hDc = GetHdcOf(*impl);
 485     HWND hWnd = GetHwndOf(this);
 486
 487     wxUxThemeEngine* theme = NULL;
 488     wxUxThemeHandle hTheme(this, L"COMBOBOX");
 489
 490     if ( hTheme )
 491         theme = wxUxThemeEngine::GetIfActive();
 492 #endif // wxUSE_UXTHEME
 493
 494     wxRect borderRect(0,0,sz.x,sz.y);
 495
 496     if ( m_iFlags & wxCC_IFLAG_BUTTON_OUTSIDE )
 497     {
 498         borderRect = m_tcArea;
 499         borderRect.Inflate(1);
 500     }
 501
 502     int drawButFlags = 0;
 503
 504 #if wxUSE_UXTHEME
 505     if ( hTheme )
 506     {
 507         const bool useVistaComboBox = ::wxGetWinVersion() >= wxWinVersion_Vista;
 508
 509         RECT rFull;
 510         wxCopyRectToRECT(borderRect, rFull);
 511
 512         RECT rButton;
 513         wxCopyRectToRECT(rectButton, rButton);
 514
 515         RECT rBorder;
 516         wxCopyRectToRECT(borderRect, rBorder);
 517
 518         bool isNonStdButton = (m_iFlags & wxCC_IFLAG_BUTTON_OUTSIDE) ||
 519                               (m_iFlags & wxCC_IFLAG_HAS_NONSTANDARD_BUTTON);
 520
 521         //
 522         // Get some states for themed drawing
 523         int butState;
 524
 525         if ( !isEnabled )
 526         {
 527             butState = CBXS_DISABLED;
 528         }
 529         // Vista will display the drop-button as depressed always
 530         // when the popup window is visilbe
 531         else if ( (m_btnState & wxCONTROL_PRESSED) ||
 532                   (useVistaComboBox && !IsPopupWindowState(Hidden)) )
 533         {
 534             butState = CBXS_PRESSED;
 535         }
 536         else if ( m_btnState & wxCONTROL_CURRENT )
 537         {
 538             butState = CBXS_HOT;
 539         }
 540         else
 541         {
 542             butState = CBXS_NORMAL;
 543         }
 544
 545         int comboBoxPart = 0;  // For XP, use the 'default' part
 546         RECT* rUseForBg = &rBorder;
 547
 548         bool drawFullButton = false;
 549         int bgState = butState;
 550         const bool isFocused = (FindFocus() == GetMainWindowOfCompositeControl()) ? true : false;
 551
 552         if ( useVistaComboBox )
 553         {
 554             // FIXME: Either SetBackgroundColour or GetBackgroundColour
 555             //        doesn't work under Vista, so here's a temporary
 556             //        workaround.
 557             bgCol = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
 558
 559             // Draw the entire control as a single button?
 560             if ( !isNonStdButton )
 561             {
 562                 if ( HasFlag(wxCB_READONLY) )
 563                     drawFullButton = true;
 564             }
 565
 566             if ( drawFullButton )
 567             {
 568                 comboBoxPart = CP_READONLY;
 569                 rUseForBg = &rFull;
 570
 571                 // It should be safe enough to update this flag here.
 572                 m_iFlags |= wxCC_FULL_BUTTON;
 573             }
 574             else
 575             {
 576                 comboBoxPart = CP_BORDER;
 577                 m_iFlags &= ~wxCC_FULL_BUTTON;
 578
 579                 if ( isFocused )
 580                     bgState = CBB_FOCUSED;
 581                 else
 582                     bgState = CBB_NORMAL;
 583             }
 584         }
 585
 586         //
 587         // Draw parent's background, if necessary
 588         RECT* rUseForTb = NULL;
 589
 590         if ( theme->IsThemeBackgroundPartiallyTransparent( hTheme, comboBoxPart, bgState ) )
 591             rUseForTb = &rFull;
 592         else if ( m_iFlags & wxCC_IFLAG_BUTTON_OUTSIDE )
 593             rUseForTb = &rButton;
 594
 595         if ( rUseForTb )
 596             theme->DrawThemeParentBackground( hWnd, hDc, rUseForTb );
 597
 598         //
 599         // Draw the control background (including the border)
 600         if ( m_widthCustomBorder > 0 )
 601         {
 602             theme->DrawThemeBackground( hTheme, hDc, comboBoxPart, bgState, rUseForBg, NULL );
 603         }
 604         else
 605         {
 606             // No border. We can't use theme, since it cannot be relied on
 607             // to deliver borderless drawing, even with DrawThemeBackgroundEx.
 608             dc.SetBrush(bgCol);
 609             dc.SetPen(bgCol);
 610             dc.DrawRectangle(borderRect);
 611         }
 612
 613         //
 614         // Draw the drop-button
 615         if ( !isNonStdButton )
 616         {
 617             drawButFlags = Button_BitmapOnly;
 618
 619             int butPart = CP_DROPDOWNBUTTON;
 620
 621             if ( useVistaComboBox )
 622             {
 623                 if ( drawFullButton )
 624                 {
 625                     // We need to alter the button style slightly before
 626                     // drawing the actual button (but it was good above
 627                     // when background etc was done).
 628                     if ( butState == CBXS_HOT || butState == CBXS_PRESSED )
 629                         butState = CBXS_NORMAL;
 630                 }
 631
 632                 if ( m_btnSide == wxRIGHT )
 633                     butPart = CP_DROPDOWNBUTTONRIGHT;
 634                 else
 635                     butPart = CP_DROPDOWNBUTTONLEFT;
 636
 637             }
 638             theme->DrawThemeBackground( hTheme, hDc, butPart, butState, &rButton, NULL );
 639         }
 640         else if ( useVistaComboBox &&
 641                   (m_iFlags & wxCC_IFLAG_BUTTON_OUTSIDE) )
 642         {
 643             // We'll do this, because DrawThemeParentBackground
 644             // doesn't seem to be reliable on Vista.
 645             drawButFlags |= Button_PaintBackground;
 646         }
 647     }
 648     else
 649 #endif
 650     {
 651         // Windows 2000 and earlier
 652         drawButFlags = Button_PaintBackground;
 653
 654         dc.SetBrush(bgCol);
 655         dc.SetPen(bgCol);
 656         dc.DrawRectangle(borderRect);
 657     }
 658
 659     // Button rendering (may only do the bitmap on button, depending on the flags)
 660     DrawButton( dc, rectButton, drawButFlags );
 661
 662     // Paint required portion of the custom image on the control
 663     if ( (!m_text || m_widthCustomPaint) )
 664     {
 665         wxASSERT( m_widthCustomPaint >= 0 );
 666
 667         // this is intentionally here to allow drawed rectangle's
 668         // right edge to be hidden
 669         if ( m_text )
 670             rectTextField.width = m_widthCustomPaint;
 671
 672         dc.SetFont( GetFont() );
 673
 674         dc.SetClippingRegion(rectTextField);
 675         if ( m_popupInterface )
 676             m_popupInterface->PaintComboControl(dc,rectTextField);
 677         else
 678             wxComboPopup::DefaultPaintComboControl(this,dc,rectTextField);
 679     }
 680 }
 681
 682 void wxComboCtrl::OnMouseEvent( wxMouseEvent& event )
 683 {
 684     int mx = event.m_x;
 685     bool isOnButtonArea = m_btnArea.Contains(mx,event.m_y);
 686     int handlerFlags = isOnButtonArea ? wxCC_MF_ON_BUTTON : 0;
 687
 688     if ( PreprocessMouseEvent(event,isOnButtonArea) )
 689         return;
 690
 691     if ( (m_windowStyle & (wxCC_SPECIAL_DCLICK|wxCB_READONLY)) == wxCB_READONLY )
 692     {
 693         // if no textctrl and no special double-click, then the entire control acts
 694         // as a button
 695         handlerFlags |= wxCC_MF_ON_BUTTON;
 696         if ( HandleButtonMouseEvent(event,handlerFlags) )
 697             return;
 698     }
 699     else
 700     {
 701         if ( isOnButtonArea || HasCapture() ||
 702              (m_widthCustomPaint && mx < (m_tcArea.x+m_widthCustomPaint)) )
 703         {
 704             handlerFlags |= wxCC_MF_ON_CLICK_AREA;
 705
 706             if ( HandleButtonMouseEvent(event,handlerFlags) )
 707                 return;
 708         }
 709         else if ( m_btnState )
 710         {
 711             // otherwise need to clear the hover status
 712             m_btnState = 0;
 713             RefreshRect(m_btnArea);
 714         }
 715     }
 716
 717     //
 718     // This will handle left_down and left_dclick events outside button in a Windows-like manner.
 719     // See header file for further information on this method.
 720     HandleNormalMouseEvent(event);
 721
 722 }
 723
 724 #if wxUSE_COMBOCTRL_POPUP_ANIMATION
 725 static wxUint32 GetUserPreferencesMask()
 726 {
 727     static wxUint32 userPreferencesMask = 0;
 728     static bool valueSet = false;
 729
 730     if ( valueSet )
 731         return userPreferencesMask;
 732
 733     wxRegKey* pKey = NULL;
 734     wxRegKey key1(wxRegKey::HKCU, wxT("Software\\Policies\\Microsoft\\Control Panel"));
 735     wxRegKey key2(wxRegKey::HKCU, wxT("Software\\Policies\\Microsoft\\Windows\\Control Panel"));
 736     wxRegKey key3(wxRegKey::HKCU, wxT("Control Panel\\Desktop"));
 737
 738     if ( key1.Exists() )
 739         pKey = &key1;
 740     else if ( key2.Exists() )
 741         pKey = &key2;
 742     else if ( key3.Exists() )
 743         pKey = &key3;
 744
 745     if ( pKey && pKey->Open(wxRegKey::Read) )
 746     {
 747         wxMemoryBuffer buf;
 748         if ( pKey->HasValue(wxT("UserPreferencesMask")) &&
 749              pKey->QueryValue(wxT("UserPreferencesMask"), buf) )
 750         {
 751             if ( buf.GetDataLen() >= 4 )
 752             {
 753                 wxUint32* p = (wxUint32*) buf.GetData();
 754                 userPreferencesMask = *p;
 755             }
 756         }
 757     }
 758
 759     valueSet = true;
 760
 761     return userPreferencesMask;
 762 }
 763 #endif
 764
 765 #if wxUSE_COMBOCTRL_POPUP_ANIMATION
 766 void wxComboCtrl::OnTimerEvent( wxTimerEvent& WXUNUSED(event) )
 767 {
 768     bool stopTimer = false;
 769
 770     wxWindow* popup = GetPopupControl()->GetControl();
 771
 772     // Popup was hidden before it was fully shown?
 773     if ( IsPopupWindowState(Hidden) )
 774     {
 775         stopTimer = true;
 776     }
 777     else
 778     {
 779         wxLongLong t = ::wxGetLocalTimeMillis();
 780         const wxRect& rect = m_animRect;
 781         wxWindow* win = GetPopupWindow();
 782
 783         int pos = (int) (t-m_animStart).GetLo();
 784         if ( pos < COMBOBOX_ANIMATION_DURATION )
 785         {
 786             int height = rect.height;
 787             //int h0 = rect.height;
 788             int h = (((pos*256)/COMBOBOX_ANIMATION_DURATION)*height)/256;
 789             int y = (height - h);
 790             if ( y < 0 )
 791                 y = 0;
 792
 793             if ( m_animFlags & ShowAbove )
 794             {
 795                 win->SetSize( rect.x, rect.y + height - h, rect.width, h );
 796             }
 797             else
 798             {
 799                 popup->Move( 0, -y );
 800                 win->SetSize( rect.x, rect.y, rect.width, h );
 801             }
 802         }
 803         else
 804         {
 805             stopTimer = true;
 806         }
 807     }
 808
 809     if ( stopTimer )
 810     {
 811         popup->Move( 0, 0 );
 812         m_animTimer.Stop();
 813         DoShowPopup( m_animRect, m_animFlags );
 814     }
 815 }
 816 #endif
 817
 818 #if wxUSE_COMBOCTRL_POPUP_ANIMATION
 819 bool wxComboCtrl::AnimateShow( const wxRect& rect, int flags )
 820 {
 821     if ( GetUserPreferencesMask() & wxMSW_DESKTOP_USERPREFERENCESMASK_COMBOBOXANIM )
 822     {
 823         m_animStart = ::wxGetLocalTimeMillis();
 824         m_animRect = rect;
 825         m_animFlags = flags;
 826
 827         wxWindow* win = GetPopupWindow();
 828         win->SetSize( rect.x, rect.y, rect.width, 0 );
 829         win->Show();
 830
 831         m_animTimer.SetOwner( this, wxID_ANY );
 832         m_animTimer.Start( COMBOBOX_ANIMATION_RESOLUTION, wxTIMER_CONTINUOUS );
 833
 834         OnTimerEvent(*((wxTimerEvent*)NULL));  // Event is never used, so we can give NULL
 835
 836         return false;
 837     }
 838
 839     return true;
 840 }
 841 #endif
 842
 843 wxCoord wxComboCtrl::GetNativeTextIndent() const
 844 {
 845 #if wxUSE_UXTHEME
 846     if ( wxUxThemeEngine::GetIfActive() )
 847         return NATIVE_TEXT_INDENT_XP;
 848 #endif
 849     return NATIVE_TEXT_INDENT_CLASSIC;
 850 }
 851
 852 bool wxComboCtrl::IsKeyPopupToggle(const wxKeyEvent& event) const
 853 {
 854     const bool isPopupShown = IsPopupShown();
 855
 856     switch ( event.GetKeyCode() )
 857     {
 858         case WXK_F4:
 859             // F4 toggles the popup in the native comboboxes, so emulate them
 860             if ( !event.AltDown() )
 861                 return true;
 862             break;
 863
 864         case WXK_ESCAPE:
 865             if ( isPopupShown )
 866                 return true;
 867             break;
 868
 869         case WXK_DOWN:
 870         case WXK_UP:
 871             // On XP or with writable combo in Classic, arrows don't open the
 872             // popup but Alt-arrow does
 873             if ( event.AltDown() ||
 874                     ( !isPopupShown &&
 875                       HasFlag(wxCB_READONLY)
 876 #if wxUSE_UXTHEME
 877                       && !wxUxThemeEngine::GetIfActive()
 878 #endif
 879                     ) )
 880             {
 881                 return true;
 882             }
 883             break;
 884     }
 885
 886     return false;
 887 }
 888
 889 #endif // wxUSE_COMBOCTRL