src/generic/combog.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/generic/combog.cpp
   3 // Purpose:     Generic wxComboControl
   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_COMBOCONTROL
  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        19
  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 // wxGenericComboControl
  90 // ----------------------------------------------------------------------------
  91
  92 BEGIN_EVENT_TABLE(wxGenericComboControl, wxComboControlBase)
  93     EVT_PAINT(wxGenericComboControl::OnPaintEvent)
  94     EVT_MOUSE_EVENTS(wxGenericComboControl::OnMouseEvent)
  95 END_EVENT_TABLE()
  96
  97
  98 IMPLEMENT_DYNAMIC_CLASS(wxGenericComboControl, wxComboControlBase)
  99
 100 void wxGenericComboControl::Init()
 101 {
 102 }
 103
 104 bool wxGenericComboControl::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     // Set border
 115     long border = style & wxBORDER_MASK;
 116
 117     if ( !border )
 118     {
 119 #if defined(__WXUNIVERSAL__)
 120         border = wxBORDER_SIMPLE;
 121 #elif defined(__WXMSW__)
 122         // For XP, have 1-width custom border, for older version use sunken
 123         if ( wxUxThemeEngine::GetIfActive() )
 124         {
 125             border = wxBORDER_NONE;
 126             m_widthCustomBorder = 1;
 127         }
 128         else
 129             border = wxBORDER_SUNKEN;
 130 #elif defined(__WXGTK__)
 131         border = wxBORDER_NONE;
 132         //m_widthCustomBorder = 2;
 133         m_widthCustomBorder = 1;
 134 #else
 135         border = wxBORDER_SIMPLE;
 136 #endif
 137
 138         style = (style & ~(wxBORDER_MASK)) | border;
 139     }
 140
 141 #if defined(__WXGTK__)
 142     Customize( wxCC_BUTTON_OUTSIDE_BORDER |
 143                wxCC_NO_TEXT_AUTO_SELECT );
 144 #endif
 145
 146     if ( style & wxCC_STD_BUTTON )
 147         m_iFlags |= wxCC_POPUP_ON_MOUSE_UP;
 148
 149     // create main window
 150     if ( !wxComboControlBase::Create(parent,
 151                                      id,
 152                                      value,
 153                                      wxDefaultPosition,
 154                                      wxDefaultSize,
 155                                      style | wxFULL_REPAINT_ON_RESIZE,
 156                                      wxDefaultValidator,
 157                                      name) )
 158         return false;
 159
 160     // Create textctrl, if necessary
 161     CreateTextCtrl( wxNO_BORDER, validator );
 162
 163     // Add keyboard input handlers for main control and textctrl
 164     InstallInputHandlers( true );
 165
 166     // Set background
 167     SetBackgroundStyle( wxBG_STYLE_CUSTOM ); // for double-buffering
 168
 169     // SetSize should be called last
 170     SetSize(pos.x,pos.y,size.x,size.y);
 171
 172     return true;
 173 }
 174
 175 wxGenericComboControl::~wxGenericComboControl()
 176 {
 177 }
 178
 179 void wxGenericComboControl::OnResize()
 180 {
 181
 182     // Recalculates button and textctrl areas
 183     CalculateAreas(DEFAULT_DROPBUTTON_WIDTH);
 184
 185 #if 0
 186     // Move separate button control, if any, to correct position
 187     if ( m_btn )
 188     {
 189         wxSize sz = GetClientSize();
 190         m_btn->SetSize( m_btnArea.x + m_btnSpacingX,
 191                         (sz.y-m_btnSize.y)/2,
 192                         m_btnSize.x,
 193                         m_btnSize.y );
 194     }
 195 #endif
 196
 197     // Move textctrl, if any, accordingly
 198     PositionTextCtrl( TEXTCTRLXADJUST, TEXTCTRLYADJUST );
 199 }
 200
 201 void wxGenericComboControl::OnPaintEvent( wxPaintEvent& WXUNUSED(event) )
 202 {
 203     wxSize sz = GetClientSize();
 204     wxBufferedPaintDC dc(this,GetBufferBitmap(sz));
 205
 206     const wxRect& rectb = m_btnArea;
 207     wxRect rect = m_tcArea;
 208
 209     // artificial simple border
 210     if ( m_widthCustomBorder )
 211     {
 212         int customBorder = m_widthCustomBorder;
 213
 214         // Set border colour
 215         wxPen pen1( wxSystemSettings::GetColour(wxSYS_COLOUR_GRAYTEXT),
 216                     customBorder,
 217                     wxSOLID );
 218         dc.SetPen( pen1 );
 219
 220         // area around both controls
 221         wxRect rect2(0,0,sz.x,sz.y);
 222         if ( m_iFlags & wxCC_IFLAG_BUTTON_OUTSIDE )
 223         {
 224             rect2 = m_tcArea;
 225             if ( customBorder == 1 )
 226             {
 227                 rect2.Inflate(1);
 228             }
 229             else
 230             {
 231             #ifdef __WXGTK__
 232                 rect2.x -= 1;
 233                 rect2.y -= 1;
 234             #else
 235                 rect2.x -= customBorder;
 236                 rect2.y -= customBorder;
 237             #endif
 238                 rect2.width += 1 + customBorder;
 239                 rect2.height += 1 + customBorder;
 240             }
 241         }
 242
 243         dc.SetBrush( *wxTRANSPARENT_BRUSH );
 244         dc.DrawRectangle(rect2);
 245     }
 246
 247     wxColour winCol = GetBackgroundColour();
 248     dc.SetBrush(winCol);
 249     dc.SetPen(winCol);
 250
 251     //wxLogDebug(wxT("hei: %i tcy: %i tchei: %i"),GetClientSize().y,m_tcArea.y,m_tcArea.height);
 252     //wxLogDebug(wxT("btnx: %i tcx: %i tcwid: %i"),m_btnArea.x,m_tcArea.x,m_tcArea.width);
 253
 254     // clear main background
 255     dc.DrawRectangle(rect);
 256
 257     if ( !m_btn )
 258         // Standard button rendering
 259         DrawButton(dc,rectb,true);
 260
 261     // paint required portion on the control
 262     if ( (!m_text || m_widthCustomPaint) )
 263     {
 264         wxASSERT( m_widthCustomPaint >= 0 );
 265
 266         // this is intentionally here to allow drawed rectangle's
 267         // right edge to be hidden
 268         if ( m_text )
 269             rect.width = m_widthCustomPaint;
 270
 271         dc.SetFont( GetFont() );
 272
 273         dc.SetClippingRegion(rect);
 274         if ( m_popupInterface )
 275             m_popupInterface->PaintComboControl(dc,rect);
 276         else
 277             wxComboPopup::DefaultPaintComboControl(this,dc,rect);
 278     }
 279 }
 280
 281 void wxGenericComboControl::OnMouseEvent( wxMouseEvent& event )
 282 {
 283     bool isOnButtonArea = m_btnArea.Inside(event.m_x,event.m_y);
 284     int handlerFlags = isOnButtonArea ? wxCC_MF_ON_BUTTON : 0;
 285
 286     // Preprocessing fabricates double-clicks and prevents
 287     // (it may also do other common things in future)
 288     if ( PreprocessMouseEvent(event,handlerFlags) )
 289         return;
 290
 291 #ifdef __WXMSW__
 292     const bool ctrlIsButton = true;
 293 #else
 294     const bool ctrlIsButton = false;
 295 #endif
 296
 297     if ( ctrlIsButton &&
 298          (m_windowStyle & (wxCC_SPECIAL_DCLICK|wxCB_READONLY)) == wxCB_READONLY )
 299     {
 300         // if no textctrl and no special double-click, then the entire control acts
 301         // as a button
 302         handlerFlags |= wxCC_MF_ON_BUTTON;
 303         if ( HandleButtonMouseEvent(event,handlerFlags) )
 304             return;
 305     }
 306     else
 307     {
 308         if ( isOnButtonArea || HasCapture() )
 309         {
 310             if ( HandleButtonMouseEvent(event,handlerFlags) )
 311                 return;
 312         }
 313         else if ( m_btnState )
 314         {
 315             // otherwise need to clear the hover status
 316             m_btnState = 0;
 317             RefreshRect(m_btnArea);
 318         }
 319     }
 320
 321     //
 322     // This will handle left_down and left_dclick events outside button in a Windows/GTK-like manner.
 323     // See header file for further information on this method.
 324     HandleNormalMouseEvent(event);
 325
 326 }
 327
 328 #ifdef __WXUNIVERSAL__
 329
 330 bool wxGenericComboControl::PerformAction(const wxControlAction& action,
 331                                           long numArg,
 332                                           const wxString& strArg)
 333 {
 334     bool processed = false;
 335     if ( action == wxACTION_COMBOBOX_POPUP )
 336     {
 337         if ( !m_isPopupShown )
 338         {
 339             ShowPopup();
 340
 341             processed = true;
 342         }
 343     }
 344     else if ( action == wxACTION_COMBOBOX_DISMISS )
 345     {
 346         if ( m_isPopupShown )
 347         {
 348             HidePopup();
 349
 350             processed = true;
 351         }
 352     }
 353
 354     if ( !processed )
 355     {
 356         // pass along
 357         return wxControl::PerformAction(action, numArg, strArg);
 358     }
 359
 360     return true;
 361 }
 362
 363 #endif // __WXUNIVERSAL__
 364
 365 // If native wxComboControl was not defined, then prepare a simple
 366 // front-end so that wxRTTI works as expected.
 367 #ifndef _WX_COMBOCONTROL_H_
 368 IMPLEMENT_DYNAMIC_CLASS(wxComboControl, wxGenericComboControl)
 369 #endif
 370
 371 #endif // !wxCOMBOCONTROL_FULLY_FEATURED
 372
 373 #endif // wxUSE_COMBOCONTROL