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