src/os2/checklst.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        checklst.cpp
   3 // Purpose:     implementation of wxCheckListBox class
   4 // Author:      David Webster
   5 // Modified by:
   6 // Created:     10/13/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) David Webster
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // headers & declarations
  14 // ============================================================================
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #if wxUSE_OWNER_DRAWN
  20
  21 #include "wx/object.h"
  22 #include "wx/colour.h"
  23 #include "wx/font.h"
  24 #include "wx/bitmap.h"
  25 #include "wx/window.h"
  26 #include "wx/listbox.h"
  27 #include "wx/ownerdrw.h"
  28 #include "wx/settings.h"
  29 #include "wx/dcmemory.h"
  30 #include "wx/dcscreen.h"
  31 #include "wx/os2/checklst.h"
  32 #include "wx/log.h"
  33
  34 #define INCL_PM
  35 #include <os2.h>
  36
  37 // ----------------------------------------------------------------------------
  38 // private functions
  39 // ----------------------------------------------------------------------------
  40
  41 // get item (converted to right type)
  42 #define GetItem(n)    ((wxCheckListBoxItem *)(GetItem(n)))
  43
  44 // ============================================================================
  45 // implementation
  46 // ============================================================================
  47
  48 IMPLEMENT_DYNAMIC_CLASS(wxCheckListBox, wxListBox)
  49
  50 // ----------------------------------------------------------------------------
  51 // declaration and implementation of wxCheckListBoxItem class
  52 // ----------------------------------------------------------------------------
  53
  54 class wxCheckListBoxItem : public wxOwnerDrawn
  55 {
  56     friend class wxCheckListBox;
  57 public:
  58     //
  59     // ctor
  60     //
  61     wxCheckListBoxItem( wxCheckListBox* pParent
  62                        ,size_t          nIndex
  63                       );
  64
  65     //
  66     // Drawing functions
  67     //
  68     virtual bool OnDrawItem( wxDC&         rDc
  69                             ,const wxRect& rRect
  70                             ,wxODAction    eAct
  71                             ,wxODStatus    eStat
  72                            );
  73
  74     //
  75     // Simple accessors
  76     //
  77     bool IsChecked(void) const  { return m_bChecked; }
  78     void Check(bool bCheck);
  79     void Toggle(void) { Check(!IsChecked()); }
  80
  81 private:
  82     bool                            m_bChecked;
  83     wxCheckListBox*                 m_pParent;
  84     size_t                          m_nIndex;
  85 }; // end of CLASS wxCheckListBoxItem
  86
  87 wxCheckListBoxItem::wxCheckListBoxItem (
  88   wxCheckListBox*                   pParent
  89 , size_t                            nIndex
  90 )
  91 : wxOwnerDrawn( ""
  92                ,TRUE // checkable
  93               )
  94 {
  95     m_bChecked = FALSE;
  96     m_pParent  = pParent;
  97     m_nIndex   = nIndex;
  98
  99     //
 100     // We don't initialize m_nCheckHeight/Width vars because it's
 101     // done in OnMeasure while they are used only in OnDraw and we
 102     // know that there will always be OnMeasure before OnDraw
 103     //
 104     SetMarginWidth(GetDefaultMarginWidth());
 105 } // end of wxCheckListBoxItem::wxCheckListBoxItem
 106
 107 bool wxCheckListBoxItem::OnDrawItem (
 108   wxDC&                             rDc
 109 , const wxRect&                     rRect
 110 , wxODAction                        eAct
 111 , wxODStatus                        eStat
 112 )
 113 {
 114     wxRect                          vRect = rRect;
 115
 116     ::WinQueryWindowRect( m_pParent->GetHWND()
 117                          ,&rDc.m_vRclPaint
 118                         );
 119     if (IsChecked())
 120         eStat = (wxOwnerDrawn::wxODStatus)(eStat | wxOwnerDrawn::wxODChecked);
 121
 122     //
 123     // Unfortunately PM doesn't quite get the text position exact.  We need to alter
 124     // it down and to the right, just a little bit.  The coords in rRect are OS/2
 125     // coords not wxWidgets coords.
 126     //
 127     vRect.x += 5;
 128     vRect.y -= 3;
 129     if (wxOwnerDrawn::OnDrawItem( rDc
 130                                  ,vRect
 131                                  ,eAct
 132                                  ,eStat))
 133     {
 134         size_t                      nCheckWidth  = GetDefaultMarginWidth();
 135         size_t                      nCheckHeight = m_pParent->GetItemHeight();
 136         int                         nParentHeight;
 137         int                         nX = rRect.GetX();
 138         int                         nY = rRect.GetY();
 139         int                         nOldY = nY;
 140         wxColour                    vColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
 141         wxPen                       vPenBack;
 142         wxPen                       vPenGray;
 143         wxPen                       vPenPrev;
 144
 145         m_pParent->GetSize( NULL
 146                            ,&nParentHeight
 147                           );
 148
 149         nY = nParentHeight - nY - nCheckHeight;
 150         vPenBack = wxPen(vColour, 1, wxSOLID);
 151         vPenGray = wxPen(wxColour(127, 127, 127), 1, wxSOLID);
 152
 153         //
 154         // Erase the 1-pixel border
 155         //
 156         rDc.SetPen(vPenBack);
 157         rDc.DrawRectangle( nX
 158                           ,nY
 159                           ,nCheckWidth
 160                           ,nCheckHeight
 161                          );
 162
 163         //
 164         // Now we draw the smaller rectangle
 165         //
 166         nY++;
 167         nCheckWidth  -= 2;
 168         nCheckHeight -= 2;
 169
 170         //
 171         // Draw hollow gray rectangle
 172         //
 173         rDc.SetPen(vPenGray);
 174         rDc.DrawRectangle( nX
 175                           ,nY
 176                           ,nCheckWidth
 177                           ,nCheckHeight
 178                          );
 179
 180         nX++;
 181         if (IsChecked())
 182         {
 183             //
 184             // Draw the check by loading the sys standard bitmap and drawing it
 185             //
 186             HBITMAP                 hChkBmp = ::WinGetSysBitmap( HWND_DESKTOP
 187                                                                 ,SBMP_MENUCHECK
 188                                                                );
 189             POINTL                  vPoint = {nX, nOldY + 3};
 190
 191             ::WinDrawBitmap( rDc.GetHPS()
 192                             ,hChkBmp
 193                             ,NULL
 194                             ,&vPoint
 195                             ,NULL
 196                             ,NULL
 197                             ,DBM_NORMAL
 198                            );
 199         }
 200         return TRUE;
 201     }
 202     return FALSE;
 203 } // end of wxCheckListBoxItem::OnDrawItem
 204
 205 //
 206 // Change the state of the item and redraw it
 207 //
 208 void wxCheckListBoxItem::Check (
 209   bool                              bCheck
 210 )
 211 {
 212     m_bChecked = bCheck;
 213
 214     //
 215     // Index may be chanegd because new items were added/deleted
 216     //
 217     if (m_pParent->GetItemIndex(this) != (int)m_nIndex)
 218     {
 219         //
 220         // Update it
 221         //
 222         int                         nIndex = m_pParent->GetItemIndex(this);
 223
 224         wxASSERT_MSG(nIndex != wxNOT_FOUND, wxT("what does this item do here?"));
 225
 226         m_nIndex = (size_t)nIndex;
 227     }
 228
 229
 230     wxCommandEvent                  vEvent( wxEVT_COMMAND_CHECKLISTBOX_TOGGLED
 231                                            ,m_pParent->GetId()
 232                                           );
 233
 234     vEvent.SetInt(m_nIndex);
 235     vEvent.SetEventObject(m_pParent);
 236     m_pParent->ProcessCommand(vEvent);
 237 } // end of wxCheckListBoxItem::Check
 238
 239 // ----------------------------------------------------------------------------
 240 // implementation of wxCheckListBox class
 241 // ----------------------------------------------------------------------------
 242
 243 // define event table
 244 // ------------------
 245 BEGIN_EVENT_TABLE(wxCheckListBox, wxListBox)
 246   EVT_CHAR(wxCheckListBox::OnChar)
 247   EVT_LEFT_DOWN(wxCheckListBox::OnLeftClick)
 248 END_EVENT_TABLE()
 249
 250 //
 251 // Control creation
 252 // ----------------
 253 //
 254
 255 //
 256 // Default ctor: use Create() to really create the control
 257 //
 258 wxCheckListBox::wxCheckListBox()
 259 : wxListBox()
 260 {
 261 } // end of wxCheckListBox::wxCheckListBox
 262
 263 //
 264 // Ctor which creates the associated control
 265 //
 266 wxCheckListBox::wxCheckListBox (
 267   wxWindow*                         pParent
 268 , wxWindowID                        vId
 269 , const wxPoint&                    rPos
 270 , const wxSize&                     rSize
 271 , int                               nStrings
 272 , const wxString                    asChoices[]
 273 , long                              lStyle
 274 , const wxValidator&                rVal
 275 , const wxString&                   rsName
 276 )
 277               : wxListBox()
 278 {
 279     Create( pParent
 280            ,vId
 281            ,rPos
 282            ,rSize
 283            ,nStrings
 284            ,asChoices
 285            ,lStyle | wxLB_OWNERDRAW
 286            ,rVal
 287            ,rsName
 288           );
 289 } // end of wxCheckListBox::wxCheckListBox
 290
 291 wxCheckListBox::wxCheckListBox (
 292   wxWindow*                         pParent
 293 , wxWindowID                        vId
 294 , const wxPoint&                    rPos
 295 , const wxSize&                     rSize
 296 , const wxArrayString&              asChoices
 297 , long                              lStyle
 298 , const wxValidator&                rVal
 299 , const wxString&                   rsName
 300 )
 301               : wxListBox()
 302 {
 303     wxCArrayString chs(asChoices);
 304     Create( pParent
 305            ,vId
 306            ,rPos
 307            ,rSize
 308            ,chs.GetCount()
 309            ,chs.GetStrings()
 310            ,lStyle | wxLB_OWNERDRAW
 311            ,rVal
 312            ,rsName
 313           );
 314 } // end of wxCheckListBox::wxCheckListBox
 315
 316 void wxCheckListBox::Delete(
 317   int                               N
 318 )
 319 {
 320     wxCHECK_RET( N >= 0 && N < m_nNumItems,
 321                  wxT("invalid index in wxListBox::Delete") );
 322     wxListBox::Delete(N);
 323
 324     //
 325     // Free memory
 326     //
 327     delete m_aItems[N];
 328     m_aItems.RemoveAt(N);
 329 } // end of wxCheckListBox::Delete
 330
 331 void wxCheckListBox::InsertItems (
 332   int                               nItems
 333 , const wxString                    asItems[]
 334 , int                               nPos
 335 )
 336 {
 337     int                             i;
 338
 339     wxCHECK_RET( nPos >= 0 && nPos <= m_nNumItems,
 340                  wxT("invalid index in wxCheckListBox::InsertItems") );
 341
 342     wxListBox::InsertItems( nItems
 343                            ,asItems
 344                            ,nPos
 345                           );
 346     for (i = 0; i < nItems; i++)
 347     {
 348         wxOwnerDrawn*               pNewItem = CreateItem((size_t)(nPos + i));
 349
 350         pNewItem->SetName(asItems[i]);
 351         m_aItems.Insert(pNewItem, (size_t)(nPos + i));
 352         ::WinSendMsg( (HWND)GetHWND()
 353                      ,LM_SETITEMHANDLE
 354                      ,(MPARAM)(i + nPos)
 355                      ,MPFROMP(pNewItem)
 356                     );
 357     }
 358 } // end of wxCheckListBox::InsertItems
 359
 360 bool wxCheckListBox::SetFont (
 361   const wxFont&                     rFont
 362 )
 363 {
 364     size_t                          i;
 365
 366     for (i = 0; i < m_aItems.GetCount(); i++)
 367         m_aItems[i]->SetFont(rFont);
 368     wxListBox::SetFont(rFont);
 369     return TRUE;
 370 } // end of wxCheckListBox::SetFont
 371
 372 //
 373 // Create/retrieve item
 374 // --------------------
 375 //
 376
 377 //
 378 // Create a check list box item
 379 //
 380 wxOwnerDrawn* wxCheckListBox::CreateItem (
 381   size_t                            nIndex
 382 )
 383 {
 384     wxCheckListBoxItem*             pItem = new wxCheckListBoxItem( this
 385                                                                    ,nIndex
 386                                                                   );
 387     return pItem;
 388 } // end of wxCheckListBox::CreateItem
 389
 390 //
 391 // Return item size
 392 // ----------------
 393 //
 394 long wxCheckListBox::OS2OnMeasure (
 395   WXMEASUREITEMSTRUCT*             pItem
 396 )
 397 {
 398     if (!pItem)
 399         pItem = (WXMEASUREITEMSTRUCT*)new OWNERITEM;
 400     if (wxListBox::OS2OnMeasure(pItem) )
 401     {
 402         POWNERITEM                  pStruct = (POWNERITEM)pItem;
 403
 404         //
 405         // Save item height
 406         //
 407         m_nItemHeight = pStruct->rclItem.yTop - pStruct->rclItem.yBottom;
 408
 409         //
 410         // Add place for the check mark
 411         //
 412         pStruct->rclItem.xRight += wxOwnerDrawn::GetDefaultMarginWidth();
 413         return long(MRFROM2SHORT((USHORT)m_nItemHeight, (USHORT)(pStruct->rclItem.xRight - pStruct->rclItem.xLeft)));
 414     }
 415     return 0L;
 416 } // end of wxCheckListBox::CreateItem
 417
 418 //
 419 // Check items
 420 // -----------
 421 //
 422 bool wxCheckListBox::IsChecked (
 423   size_t                            uiIndex
 424 ) const
 425 {
 426     return GetItem(uiIndex)->IsChecked();
 427 } // end of wxCheckListBox::IsChecked
 428
 429 void wxCheckListBox::Check (
 430   size_t                            uiIndex
 431 , bool                              bCheck
 432 )
 433 {
 434     GetItem(uiIndex)->Check(bCheck);
 435 } // end of wxCheckListBox::Check
 436
 437 //
 438 // Process events
 439 // --------------
 440 //
 441 void wxCheckListBox::OnChar (
 442   wxKeyEvent&                       rEvent
 443 )
 444 {
 445     if (rEvent.GetKeyCode() == WXK_SPACE)
 446         GetItem(GetSelection())->Toggle();
 447     else
 448         rEvent.Skip();
 449 } // end of wxCheckListBox::OnChar
 450
 451 void wxCheckListBox::OnLeftClick (
 452   wxMouseEvent&                     rEvent
 453 )
 454 {
 455     //
 456     // Clicking on the item selects it, clicking on the checkmark toggles
 457     //
 458     if (rEvent.GetX() <= wxOwnerDrawn::GetDefaultMarginWidth())
 459     {
 460         int                         nParentHeight;
 461         wxScreenDC                  vDc;
 462         wxCoord                     vHeight;
 463
 464         GetSize( NULL
 465                 ,&nParentHeight
 466                );
 467         vDc.SetFont(GetFont());
 468         vHeight = (wxCoord)(vDc.GetCharHeight() * 2.5);
 469
 470         //
 471         // This, of course, will not work if the LB is scrolled
 472         //
 473         int                         nY = rEvent.GetY();
 474
 475         nY = nParentHeight - (nY + vHeight);
 476
 477         size_t                      nItem = (size_t)(nY / vHeight);
 478
 479         if (nItem < (size_t)m_nNumItems)
 480             GetItem(nItem)->Toggle();
 481         //
 482         // else: it's not an error, just click outside of client zone
 483         //
 484     }
 485     else
 486     {
 487         //
 488         // Implement default behaviour: clicking on the item selects it
 489         //
 490         rEvent.Skip();
 491     }
 492 } // end of wxCheckListBox::OnLeftClick
 493
 494 #endif
 495