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 wxWindows 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     HWND                            hWndListbox = (HWND)m_pParent->GetHWND();
 230     RECTL                           rUpdate;
 231     MRESULT                         mRc;
 232
 233     wxCommandEvent                  vEvent( wxEVT_COMMAND_CHECKLISTBOX_TOGGLED
 234                                            ,m_pParent->GetId()
 235                                           );
 236
 237     vEvent.SetInt(m_nIndex);
 238     vEvent.SetEventObject(m_pParent);
 239     m_pParent->ProcessCommand(vEvent);
 240 } // end of wxCheckListBoxItem::Check
 241
 242 // ----------------------------------------------------------------------------
 243 // implementation of wxCheckListBox class
 244 // ----------------------------------------------------------------------------
 245
 246 // define event table
 247 // ------------------
 248 BEGIN_EVENT_TABLE(wxCheckListBox, wxListBox)
 249   EVT_CHAR(wxCheckListBox::OnChar)
 250   EVT_LEFT_DOWN(wxCheckListBox::OnLeftClick)
 251 END_EVENT_TABLE()
 252
 253 //
 254 // Control creation
 255 // ----------------
 256 //
 257
 258 //
 259 // Default ctor: use Create() to really create the control
 260 //
 261 wxCheckListBox::wxCheckListBox()
 262 : wxListBox()
 263 {
 264 } // end of wxCheckListBox::wxCheckListBox
 265
 266 //
 267 // Ctor which creates the associated control
 268 //
 269 wxCheckListBox::wxCheckListBox (
 270   wxWindow*                         pParent
 271 , wxWindowID                        vId
 272 , const wxPoint&                    rPos
 273 , const wxSize&                     rSize
 274 , int                               nStrings
 275 , const wxString                    asChoices[]
 276 , long                              lStyle
 277 , const wxValidator&                rVal
 278 , const wxString&                   rsName
 279 )
 280               : wxListBox()
 281 {
 282     Create( pParent
 283            ,vId
 284            ,rPos
 285            ,rSize
 286            ,nStrings
 287            ,asChoices
 288            ,lStyle | wxLB_OWNERDRAW
 289            ,rVal
 290            ,rsName
 291           );
 292 } // end of wxCheckListBox::wxCheckListBox
 293
 294 void wxCheckListBox::Delete(
 295   int                               N
 296 )
 297 {
 298     wxCHECK_RET( N >= 0 && N < m_nNumItems,
 299                  wxT("invalid index in wxListBox::Delete") );
 300     wxListBox::Delete(N);
 301
 302     //
 303     // Free memory
 304     //
 305     delete m_aItems[N];
 306     m_aItems.RemoveAt(N);
 307 } // end of wxCheckListBox::Delete
 308
 309 void wxCheckListBox::InsertItems (
 310   int                               nItems
 311 , const wxString                    asItems[]
 312 , int                               nPos
 313 )
 314 {
 315     int                             i;
 316
 317     wxCHECK_RET( nPos >= 0 && nPos <= m_nNumItems,
 318                  wxT("invalid index in wxCheckListBox::InsertItems") );
 319
 320     wxListBox::InsertItems( nItems
 321                            ,asItems
 322                            ,nPos
 323                           );
 324     for (i = 0; i < nItems; i++)
 325     {
 326         wxOwnerDrawn*               pNewItem = CreateItem((size_t)(nPos + i));
 327
 328         pNewItem->SetName(asItems[i]);
 329         m_aItems.Insert(pNewItem, (size_t)(nPos + i));
 330         ::WinSendMsg( (HWND)GetHWND()
 331                      ,LM_SETITEMHANDLE
 332                      ,(MPARAM)(i + nPos)
 333                      ,MPFROMP(pNewItem)
 334                     );
 335     }
 336 } // end of wxCheckListBox::InsertItems
 337
 338 bool wxCheckListBox::SetFont (
 339   const wxFont&                     rFont
 340 )
 341 {
 342     size_t                          i;
 343
 344     for (i = 0; i < m_aItems.GetCount(); i++)
 345         m_aItems[i]->SetFont(rFont);
 346     wxListBox::SetFont(rFont);
 347     return TRUE;
 348 } // end of wxCheckListBox::SetFont
 349
 350 //
 351 // Create/retrieve item
 352 // --------------------
 353 //
 354
 355 //
 356 // Create a check list box item
 357 //
 358 wxOwnerDrawn* wxCheckListBox::CreateItem (
 359   size_t                            nIndex
 360 )
 361 {
 362     wxCheckListBoxItem*             pItem = new wxCheckListBoxItem( this
 363                                                                    ,nIndex
 364                                                                   );
 365     return pItem;
 366 } // end of wxCheckListBox::CreateItem
 367
 368 //
 369 // Return item size
 370 // ----------------
 371 //
 372 long wxCheckListBox::OS2OnMeasure (
 373   WXMEASUREITEMSTRUCT*             pItem
 374 )
 375 {
 376     if (!pItem)
 377         pItem = (WXMEASUREITEMSTRUCT*)new OWNERITEM;
 378     if (wxListBox::OS2OnMeasure(pItem) )
 379     {
 380         POWNERITEM                  pStruct = (POWNERITEM)pItem;
 381
 382         //
 383         // Save item height
 384         //
 385         m_nItemHeight = pStruct->rclItem.yTop - pStruct->rclItem.yBottom;
 386
 387         //
 388         // Add place for the check mark
 389         //
 390         pStruct->rclItem.xRight += wxOwnerDrawn::GetDefaultMarginWidth();
 391         return long(MRFROM2SHORT((USHORT)m_nItemHeight, (USHORT)(pStruct->rclItem.xRight - pStruct->rclItem.xLeft)));
 392     }
 393     return 0L;
 394 } // end of wxCheckListBox::CreateItem
 395
 396 //
 397 // Check items
 398 // -----------
 399 //
 400 bool wxCheckListBox::IsChecked (
 401   size_t                            uiIndex
 402 ) const
 403 {
 404     return GetItem(uiIndex)->IsChecked();
 405 } // end of wxCheckListBox::IsChecked
 406
 407 void wxCheckListBox::Check (
 408   size_t                            uiIndex
 409 , bool                              bCheck
 410 )
 411 {
 412     GetItem(uiIndex)->Check(bCheck);
 413 } // end of wxCheckListBox::Check
 414
 415 //
 416 // Process events
 417 // --------------
 418 //
 419 void wxCheckListBox::OnChar (
 420   wxKeyEvent&                       rEvent
 421 )
 422 {
 423     if (rEvent.KeyCode() == WXK_SPACE)
 424         GetItem(GetSelection())->Toggle();
 425     else
 426         rEvent.Skip();
 427 } // end of wxCheckListBox::OnChar
 428
 429 void wxCheckListBox::OnLeftClick (
 430   wxMouseEvent&                     rEvent
 431 )
 432 {
 433     //
 434     // Clicking on the item selects it, clicking on the checkmark toggles
 435     //
 436     if (rEvent.GetX() <= wxOwnerDrawn::GetDefaultMarginWidth())
 437     {
 438         int                         nParentHeight;
 439         wxScreenDC                  vDc;
 440         wxCoord                     vHeight;
 441
 442         GetSize( NULL
 443                 ,&nParentHeight
 444                );
 445         vDc.SetFont(GetFont());
 446         vHeight = vDc.GetCharHeight() * 2.5;
 447
 448         //
 449         // This, of course, will not work if the LB is scrolled
 450         //
 451         int                         nY = rEvent.GetY();
 452
 453         nY = nParentHeight - (nY + vHeight);
 454
 455         size_t                      nItem = (size_t)(nY / vHeight);
 456
 457         if (nItem < (size_t)m_nNumItems)
 458             GetItem(nItem)->Toggle();
 459         //
 460         // else: it's not an error, just click outside of client zone
 461         //
 462     }
 463     else
 464     {
 465         //
 466         // Implement default behaviour: clicking on the item selects it
 467         //
 468         rEvent.Skip();
 469     }
 470 } // end of wxCheckListBox::OnLeftClick
 471
 472 #endif
 473