src/generic/combog.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/generic/combog.cpp
   3 // Purpose:     Generic 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 #include "wx/combo.h"
  29
  30 #ifndef WX_PRECOMP
  31     #include "wx/log.h"
  32     #include "wx/combobox.h"
  33     #include "wx/dcclient.h"
  34     #include "wx/settings.h"
  35 #endif
  36
  37 #include "wx/dcbuffer.h"
  38
  39 // ----------------------------------------------------------------------------
  40 // Some constant adjustments to make the generic more bearable
  41
  42 #if defined(__WXUNIVERSAL__)
  43
  44 #define TEXTCTRLXADJUST                 0 // position adjustment for wxTextCtrl, with zero indent
  45 #define TEXTCTRLYADJUST                 0
  46 #define TEXTXADJUST                     0 // how much is read-only text's x adjusted
  47 #define DEFAULT_DROPBUTTON_WIDTH        19
  48
  49 #elif defined(__WXMSW__)
  50
  51 #define TEXTCTRLXADJUST                 2 // position adjustment for wxTextCtrl, with zero indent
  52 #define TEXTCTRLYADJUST                 3
  53 #define TEXTXADJUST                     0 // how much is read-only text's x adjusted
  54 #define DEFAULT_DROPBUTTON_WIDTH        17
  55
  56 #elif defined(__WXGTK__)
  57
  58 #define TEXTCTRLXADJUST                 -1 // position adjustment for wxTextCtrl, with zero indent
  59 #define TEXTCTRLYADJUST                 0
  60 #define TEXTXADJUST                     1 // how much is read-only text's x adjusted
  61 #define DEFAULT_DROPBUTTON_WIDTH        23
  62
  63 #elif defined(__WXMAC__)
  64
  65 #define TEXTCTRLXADJUST                 0 // position adjustment for wxTextCtrl, with zero indent
  66 #define TEXTCTRLYADJUST                 0
  67 #define TEXTXADJUST                     0 // how much is read-only text's x adjusted
  68 #define DEFAULT_DROPBUTTON_WIDTH        22
  69
  70 #else
  71
  72 #define TEXTCTRLXADJUST                 0 // position adjustment for wxTextCtrl, with zero indent
  73 #define TEXTCTRLYADJUST                 0
  74 #define TEXTXADJUST                     0 // how much is read-only text's x adjusted
  75 #define DEFAULT_DROPBUTTON_WIDTH        19
  76
  77 #endif
  78
  79
  80 // ============================================================================
  81 // implementation
  82 // ============================================================================
  83
  84 // Only implement if no native or it wasn't fully featured
  85 #ifndef wxCOMBOCONTROL_FULLY_FEATURED
  86
  87
  88 // ----------------------------------------------------------------------------
  89 // wxGenericComboCtrl
  90 // ----------------------------------------------------------------------------
  91
  92 BEGIN_EVENT_TABLE(wxGenericComboCtrl, wxComboCtrlBase)
  93     EVT_PAINT(wxGenericComboCtrl::OnPaintEvent)
  94     EVT_MOUSE_EVENTS(wxGenericComboCtrl::OnMouseEvent)
  95 END_EVENT_TABLE()
  96
  97
  98 IMPLEMENT_DYNAMIC_CLASS(wxGenericComboCtrl, wxComboCtrlBase)
  99
 100 void wxGenericComboCtrl::Init()
 101 {
 102 }
 103
 104 bool wxGenericComboCtrl::Create(wxWindow *parent,
 105                                 wxWindowID id,
 106                                 const wxString& value,
 107                                 const wxPoint& pos,
 108                                 const wxSize& size,
 109                                 long style,
 110                                 const wxValidator& validator,
 111                                 const wxString& name)
 112 {
 113     //
 114     // Note that technically we only support 'default' border and wxNO_BORDER.
 115     long border = style & wxBORDER_MASK;
 116     int tcBorder = wxNO_BORDER;
 117
 118 #if defined(__WXUNIVERSAL__)
 119     if ( !border )
 120         border = wxBORDER_SIMPLE;
 121 #elif defined(__WXMSW__)
 122     if ( !border )
 123         // For XP, have 1-width custom border, for older version use sunken
 124         /*if ( wxUxThemeEngine::GetIfActive() )
 125         {
 126             border = wxBORDER_NONE;
 127             m_widthCustomBorder = 1;
 128         }
 129         else*/
 130             border = wxBORDER_SUNKEN;
 131 #else
 132
 133     //
 134     // Generic version is optimized for wxGTK
 135     //
 136
 137     #define UNRELIABLE_TEXTCTRL_BORDER
 138
 139     if ( !border )
 140     {
 141         if ( style & wxCB_READONLY )
 142         {
 143             m_widthCustomBorder = 1;
 144         }
 145         else
 146         {
 147             m_widthCustomBorder = 0;
 148             tcBorder = 0;
 149         }
 150     }
 151     else
 152     {
 153         // Have textctrl instead use the border given.
 154         tcBorder = border;
 155     }
 156
 157     // Because we are going to have button outside the border,
 158     // let's use wxBORDER_NONE for the whole control.
 159     border = wxBORDER_NONE;
 160
 161     Customize( wxCC_BUTTON_OUTSIDE_BORDER |
 162                wxCC_NO_TEXT_AUTO_SELECT |
 163                wxCC_BUTTON_STAYS_DOWN );
 164
 165 #endif
 166
 167     style = (style & ~(wxBORDER_MASK)) | border;
 168     if ( style & wxCC_STD_BUTTON )
 169         m_iFlags |= wxCC_POPUP_ON_MOUSE_UP;
 170
 171     // create main window
 172     if ( !wxComboCtrlBase::Create(parent,
 173                                   id,
 174                                   value,
 175                                   pos,
 176                                   size,
 177                                   style | wxFULL_REPAINT_ON_RESIZE,
 178                                   wxDefaultValidator,
 179                                   name) )
 180         return false;
 181
 182     // Create textctrl, if necessary
 183     CreateTextCtrl( tcBorder, validator );
 184
 185     // Add keyboard input handlers for main control and textctrl
 186     InstallInputHandlers();
 187
 188     // Set background
 189     SetBackgroundStyle( wxBG_STYLE_CUSTOM ); // for double-buffering
 190
 191     // SetInitialSize should be called last
 192     SetInitialSize(size);
 193
 194     return true;
 195 }
 196
 197 wxGenericComboCtrl::~wxGenericComboCtrl()
 198 {
 199 }
 200
 201 void wxGenericComboCtrl::OnResize()
 202 {
 203
 204     // Recalculates button and textctrl areas
 205     CalculateAreas(DEFAULT_DROPBUTTON_WIDTH);
 206
 207 #if 0
 208     // Move separate button control, if any, to correct position
 209     if ( m_btn )
 210     {
 211         wxSize sz = GetClientSize();
 212         m_btn->SetSize( m_btnArea.x + m_btnSpacingX,
 213                         (sz.y-m_btnSize.y)/2,
 214                         m_btnSize.x,
 215                         m_btnSize.y );
 216     }
 217 #endif
 218
 219     // Move textctrl, if any, accordingly
 220     PositionTextCtrl( TEXTCTRLXADJUST, TEXTCTRLYADJUST );
 221 }
 222
 223 void wxGenericComboCtrl::OnPaintEvent( wxPaintEvent& WXUNUSED(event) )
 224 {
 225     wxSize sz = GetClientSize();
 226     wxAutoBufferedPaintDC dc(this);
 227
 228     const wxRect& rectb = m_btnArea;
 229     wxRect rect = m_tcArea;
 230
 231     // artificial simple border
 232     if ( m_widthCustomBorder )
 233     {
 234         int customBorder = m_widthCustomBorder;
 235
 236         // Set border colour
 237         wxPen pen1( wxSystemSettings::GetColour(wxSYS_COLOUR_GRAYTEXT),
 238                     customBorder,
 239                     wxSOLID );
 240         dc.SetPen( pen1 );
 241
 242         // area around both controls
 243         wxRect rect2(0,0,sz.x,sz.y);
 244         if ( m_iFlags & wxCC_IFLAG_BUTTON_OUTSIDE )
 245         {
 246             rect2 = m_tcArea;
 247             if ( customBorder == 1 )
 248             {
 249                 rect2.Inflate(1);
 250             }
 251             else
 252             {
 253             #ifdef __WXGTK__
 254                 rect2.x -= 1;
 255                 rect2.y -= 1;
 256             #else
 257                 rect2.x -= customBorder;
 258                 rect2.y -= customBorder;
 259             #endif
 260                 rect2.width += 1 + customBorder;
 261                 rect2.height += 1 + customBorder;
 262             }
 263         }
 264
 265         dc.SetBrush( *wxTRANSPARENT_BRUSH );
 266         dc.DrawRectangle(rect2);
 267     }
 268
 269 #ifndef __WXMAC__  // see note in OnThemeChange
 270     wxColour winCol = GetBackgroundColour();
 271 #else
 272     wxColour winCol = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
 273 #endif
 274     dc.SetBrush(winCol);
 275     dc.SetPen(winCol);
 276
 277     //wxLogDebug(wxT("hei: %i tcy: %i tchei: %i"),GetClientSize().y,m_tcArea.y,m_tcArea.height);
 278     //wxLogDebug(wxT("btnx: %i tcx: %i tcwid: %i"),m_btnArea.x,m_tcArea.x,m_tcArea.width);
 279
 280     // clear main background
 281     dc.DrawRectangle(rect);
 282
 283     if ( !m_btn )
 284     {
 285         // Standard button rendering
 286         DrawButton(dc,rectb);
 287     }
 288
 289     // paint required portion on the control
 290     if ( (!m_text || m_widthCustomPaint) )
 291     {
 292         wxASSERT( m_widthCustomPaint >= 0 );
 293
 294         // this is intentionally here to allow drawed rectangle's
 295         // right edge to be hidden
 296         if ( m_text )
 297             rect.width = m_widthCustomPaint;
 298
 299         dc.SetFont( GetFont() );
 300
 301         dc.SetClippingRegion(rect);
 302         if ( m_popupInterface )
 303             m_popupInterface->PaintComboControl(dc,rect);
 304         else
 305             wxComboPopup::DefaultPaintComboControl(this,dc,rect);
 306     }
 307 }
 308
 309 void wxGenericComboCtrl::OnMouseEvent( wxMouseEvent& event )
 310 {
 311     int mx = event.m_x;
 312     bool isOnButtonArea = m_btnArea.Contains(mx,event.m_y);
 313     int handlerFlags = isOnButtonArea ? wxCC_MF_ON_BUTTON : 0;
 314
 315     if ( PreprocessMouseEvent(event,handlerFlags) )
 316         return;
 317
 318     const bool ctrlIsButton = wxPlatformIs(wxOS_WINDOWS);
 319
 320     if ( ctrlIsButton &&
 321          (m_windowStyle & (wxCC_SPECIAL_DCLICK|wxCB_READONLY)) == wxCB_READONLY )
 322     {
 323         // if no textctrl and no special double-click, then the entire control acts
 324         // as a button
 325         handlerFlags |= wxCC_MF_ON_BUTTON;
 326         if ( HandleButtonMouseEvent(event,handlerFlags) )
 327             return;
 328     }
 329     else
 330     {
 331         if ( isOnButtonArea || HasCapture() ||
 332              (m_widthCustomPaint && mx < (m_tcArea.x+m_widthCustomPaint)) )
 333         {
 334             handlerFlags |= wxCC_MF_ON_CLICK_AREA;
 335
 336             if ( HandleButtonMouseEvent(event,handlerFlags) )
 337                 return;
 338         }
 339         else if ( m_btnState )
 340         {
 341             // otherwise need to clear the hover status
 342             m_btnState = 0;
 343             RefreshRect(m_btnArea);
 344         }
 345     }
 346
 347     //
 348     // This will handle left_down and left_dclick events outside button in a Windows/GTK-like manner.
 349     // See header file for further information on this method.
 350     HandleNormalMouseEvent(event);
 351
 352 }
 353
 354 void wxGenericComboCtrl::SetCustomPaintWidth( int width )
 355 {
 356 #ifdef UNRELIABLE_TEXTCTRL_BORDER
 357     //
 358     // If starting/stopping to show an image in front
 359     // of a writable text-field, then re-create textctrl
 360     // with different kind of border (because we can't
 361     // assume that textctrl fully supports wxNO_BORDER).
 362     //
 363     wxTextCtrl* tc = GetTextCtrl();
 364
 365     if ( tc && (m_iFlags & wxCC_BUTTON_OUTSIDE_BORDER) )
 366     {
 367         int borderType = tc->GetWindowStyle() & wxBORDER_MASK;
 368         int tcCreateStyle = -1;
 369
 370         if ( width > 0 )
 371         {
 372             // Re-create textctrl with no border
 373             if ( borderType != wxNO_BORDER )
 374             {
 375                 m_widthCustomBorder = 1;
 376                 tcCreateStyle = wxNO_BORDER;
 377             }
 378         }
 379         else if ( width == 0 )
 380         {
 381             // Re-create textctrl with normal border
 382             if ( borderType == wxNO_BORDER )
 383             {
 384                 m_widthCustomBorder = 0;
 385                 tcCreateStyle = 0;
 386             }
 387         }
 388
 389         // Common textctrl re-creation code
 390         if ( tcCreateStyle != -1 )
 391         {
 392             tc->RemoveEventHandler(m_textEvtHandler);
 393             delete m_textEvtHandler;
 394
 395 #if wxUSE_VALIDATORS
 396             wxValidator* pValidator = tc->GetValidator();
 397             if ( pValidator )
 398             {
 399                 pValidator = (wxValidator*) pValidator->Clone();
 400                 CreateTextCtrl( tcCreateStyle, *pValidator );
 401                 delete pValidator;
 402             }
 403             else
 404 #endif
 405             {
 406                 CreateTextCtrl( tcCreateStyle, wxDefaultValidator );
 407             }
 408
 409             InstallInputHandlers();
 410         }
 411     }
 412 #endif // UNRELIABLE_TEXTCTRL_BORDER
 413
 414     wxComboCtrlBase::SetCustomPaintWidth( width );
 415 }
 416
 417 bool wxGenericComboCtrl::IsKeyPopupToggle(const wxKeyEvent& event) const
 418 {
 419     int keycode = event.GetKeyCode();
 420     bool isPopupShown = IsPopupShown();
 421
 422     // This code is AFAIK appropriate for wxGTK.
 423
 424     if ( isPopupShown )
 425     {
 426         if ( keycode == WXK_ESCAPE ||
 427              ( keycode == WXK_UP && event.AltDown() ) )
 428             return true;
 429     }
 430     else
 431     {
 432         if ( keycode == WXK_DOWN && event.AltDown() )
 433             return true;
 434     }
 435
 436     return false;
 437 }
 438
 439 #ifdef __WXUNIVERSAL__
 440
 441 bool wxGenericComboCtrl::PerformAction(const wxControlAction& action,
 442                                        long numArg,
 443                                        const wxString& strArg)
 444 {
 445     bool processed = false;
 446     if ( action == wxACTION_COMBOBOX_POPUP )
 447     {
 448         if ( !IsPopupShown() )
 449         {
 450             ShowPopup();
 451
 452             processed = true;
 453         }
 454     }
 455     else if ( action == wxACTION_COMBOBOX_DISMISS )
 456     {
 457         if ( IsPopupShown() )
 458         {
 459             HidePopup();
 460
 461             processed = true;
 462         }
 463     }
 464
 465     if ( !processed )
 466     {
 467         // pass along
 468         return wxControl::PerformAction(action, numArg, strArg);
 469     }
 470
 471     return true;
 472 }
 473
 474 #endif // __WXUNIVERSAL__
 475
 476 // If native wxComboCtrl was not defined, then prepare a simple
 477 // front-end so that wxRTTI works as expected.
 478 #ifndef _WX_COMBOCONTROL_H_
 479 IMPLEMENT_DYNAMIC_CLASS(wxComboCtrl, wxGenericComboCtrl)
 480 #endif
 481
 482 #endif // !wxCOMBOCONTROL_FULLY_FEATURED
 483
 484 #endif // wxUSE_COMBOCTRL