src/os2/checklst.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/os2/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_CHECKLISTBOX && 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/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
  88
  89 wxCheckListBoxItem::wxCheckListBoxItem ( wxCheckListBox* pParent,
  90                                          size_t nIndex)
  91                    :wxOwnerDrawn( wxEmptyString, true /* checkable */ )
  92 {
  93     m_bChecked = false;
  94     m_pParent  = pParent;
  95     m_nIndex   = nIndex;
  96
  97     //
  98     // We don't initialize m_nCheckHeight/Width vars because it's
  99     // done in OnMeasure while they are used only in OnDraw and we
 100     // know that there will always be OnMeasure before OnDraw
 101     //
 102     SetMarginWidth(GetDefaultMarginWidth());
 103 } // end of wxCheckListBoxItem::wxCheckListBoxItem
 104
 105
 106
 107 bool wxCheckListBoxItem::OnDrawItem ( wxDC& rDc,
 108                                       const wxRect& rRect,
 109                                       wxODAction eAct,
 110                                       wxODStatus eStat )
 111 {
 112     wxRect vRect = rRect;
 113
 114     ::WinQueryWindowRect( m_pParent->GetHWND(), &rDc.m_vRclPaint );
 115     if (IsChecked())
 116         eStat = (wxOwnerDrawn::wxODStatus)(eStat | wxOwnerDrawn::wxODChecked);
 117
 118     //
 119     // Unfortunately PM doesn't quite get the text position exact.  We need to alter
 120     // it down and to the right, just a little bit.  The coords in rRect are OS/2
 121     // coords not wxWidgets coords.
 122     //
 123     vRect.x += 5;
 124     vRect.y -= 3;
 125     if (wxOwnerDrawn::OnDrawItem( rDc, vRect, eAct, eStat))
 126     {
 127         size_t    nCheckWidth  = GetDefaultMarginWidth();
 128         size_t    nCheckHeight = m_pParent->GetItemHeight();
 129         int       nParentHeight;
 130         int       nX = rRect.GetX();
 131         int       nY = rRect.GetY();
 132         int       nOldY = nY;
 133         wxColour  vColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
 134         wxPen     vPenBack;
 135         wxPen     vPenPrev;
 136
 137         m_pParent->GetSize( NULL, &nParentHeight);
 138
 139         nY = nParentHeight - nY - nCheckHeight;
 140         vPenBack = wxPen(vColour, 1, wxSOLID);
 141
 142         //
 143         // Erase the 1-pixel border
 144         //
 145         rDc.SetPen(vPenBack);
 146         rDc.DrawRectangle( nX, nY, nCheckWidth, nCheckHeight );
 147
 148         //
 149         // Now we draw the smaller rectangle
 150         //
 151         nY++;
 152         nCheckWidth  -= 2;
 153         nCheckHeight -= 2;
 154
 155         //
 156         // Draw hollow gray rectangle
 157         //
 158         rDc.SetPen(*wxGREY_PEN);
 159         rDc.DrawRectangle( nX, nY, nCheckWidth, nCheckHeight );
 160
 161         nX++;
 162         if (IsChecked())
 163         {
 164             //
 165             // Draw the check by loading the sys standard bitmap and drawing it
 166             //
 167             HBITMAP hChkBmp = ::WinGetSysBitmap( HWND_DESKTOP, SBMP_MENUCHECK );
 168             POINTL  vPoint = {nX, nOldY + 3};
 169
 170             ::WinDrawBitmap( rDc.GetHPS(),
 171                              hChkBmp,
 172                              NULL,
 173                              &vPoint,
 174                              NULL,
 175                              NULL,
 176                              DBM_NORMAL
 177                            );
 178         }
 179         return true;
 180     }
 181     return false;
 182 } // end of wxCheckListBoxItem::OnDrawItem
 183
 184 //
 185 // Change the state of the item and redraw it
 186 //
 187 void wxCheckListBoxItem::Check ( bool bCheck )
 188 {
 189     m_bChecked = bCheck;
 190
 191     //
 192     // Index may be chanegd because new items were added/deleted
 193     //
 194     if (m_pParent->GetItemIndex(this) != (int)m_nIndex)
 195     {
 196         //
 197         // Update it
 198         //
 199         int nIndex = m_pParent->GetItemIndex(this);
 200
 201         wxASSERT_MSG(nIndex != wxNOT_FOUND, wxT("what does this item do here?"));
 202
 203         m_nIndex = (size_t)nIndex;
 204     }
 205
 206
 207     wxCommandEvent vEvent( wxEVT_COMMAND_CHECKLISTBOX_TOGGLED,m_pParent->GetId());
 208
 209     vEvent.SetInt(m_nIndex);
 210     vEvent.SetEventObject(m_pParent);
 211     m_pParent->ProcessCommand(vEvent);
 212 } // end of wxCheckListBoxItem::Check
 213
 214
 215 // ----------------------------------------------------------------------------
 216 // implementation of wxCheckListBox class
 217 // ----------------------------------------------------------------------------
 218
 219 // define event table
 220 // ------------------
 221 BEGIN_EVENT_TABLE(wxCheckListBox, wxListBox)
 222     EVT_CHAR(wxCheckListBox::OnChar)
 223     EVT_LEFT_DOWN(wxCheckListBox::OnLeftClick)
 224 END_EVENT_TABLE()
 225
 226
 227
 228 //
 229 // Control creation
 230 // ----------------
 231 //
 232
 233 //
 234 // Default ctor: use Create() to really create the control
 235 //
 236 wxCheckListBox::wxCheckListBox()
 237                :wxCheckListBoxBase()
 238 {
 239 } // end of wxCheckListBox::wxCheckListBox
 240
 241 //
 242 // Ctor which creates the associated control
 243 //
 244 wxCheckListBox::wxCheckListBox ( wxWindow* pParent,
 245                                  wxWindowID vId,
 246                                  const wxPoint& rPos,
 247                                  const wxSize& rSize,
 248                                  int nStrings,
 249                                  const wxString asChoices[],
 250                                  long lStyle,
 251                                  const wxValidator& rVal,
 252                                  const wxString& rsName)
 253                :wxCheckListBoxBase()
 254 {
 255     Create( pParent, vId, rPos, rSize, nStrings, asChoices, lStyle | wxLB_OWNERDRAW, rVal, rsName );
 256 } // end of wxCheckListBox::wxCheckListBox
 257
 258 wxCheckListBox::wxCheckListBox ( wxWindow* pParent,
 259                                  wxWindowID vId,
 260                                  const wxPoint& rPos,
 261                                  const wxSize& rSize,
 262                                  const wxArrayString& asChoices,
 263                                  long lStyle,
 264                                  const wxValidator& rVal,
 265                                  const wxString& rsName )
 266                :wxCheckListBoxBase()
 267 {
 268     wxCArrayString chs(asChoices);
 269     Create( pParent, vId, rPos, rSize, chs.GetCount(), chs.GetStrings(),
 270             lStyle | wxLB_OWNERDRAW, rVal, rsName );
 271 } // end of wxCheckListBox::wxCheckListBox
 272
 273 void wxCheckListBox::Delete( int n )
 274 {
 275     wxCHECK_RET( IsValid(n),
 276                  wxT("invalid index in wxCheckListBox::Delete") );
 277     wxListBox::Delete(n);
 278
 279     //
 280     // Free memory
 281     //
 282     delete m_aItems[n];
 283     m_aItems.RemoveAt(n);
 284 } // end of wxCheckListBox::Delete
 285
 286 void wxCheckListBox::DoInsertItems(const wxArrayString& items, int pos)
 287 {
 288     // pos is validated in wxListBox
 289     wxListBox::DoInsertItems( items, pos );
 290     int n = items.GetCount();
 291     for (int i = 0; i < n; i++)
 292     {
 293         wxOwnerDrawn* pNewItem = CreateItem((size_t)(pos + i));
 294
 295         pNewItem->SetName(items[i]);
 296         m_aItems.Insert(pNewItem, (size_t)(pos + i));
 297         ::WinSendMsg( (HWND)GetHWND(),
 298                       LM_SETITEMHANDLE,
 299                       (MPARAM)(i + pos),
 300                       MPFROMP(pNewItem)
 301                     );
 302     }
 303 } // end of wxCheckListBox::InsertItems
 304
 305 bool wxCheckListBox::SetFont ( const wxFont& rFont )
 306 {
 307     for (size_t i = 0; i < m_aItems.GetCount(); i++)
 308         m_aItems[i]->SetFont(rFont);
 309     wxListBox::SetFont(rFont);
 310     return true;
 311 } // end of wxCheckListBox::SetFont
 312
 313
 314
 315 //
 316 // Create/retrieve item
 317 // --------------------
 318 //
 319
 320 //
 321 // Create a check list box item
 322 //
 323 wxOwnerDrawn* wxCheckListBox::CreateItem ( size_t nIndex )
 324 {
 325     wxCheckListBoxItem* pItem = new wxCheckListBoxItem( this, nIndex );
 326     return pItem;
 327 } // end of wxCheckListBox::CreateItem
 328
 329
 330
 331 //
 332 // Return item size
 333 // ----------------
 334 //
 335 long wxCheckListBox::OS2OnMeasure ( WXMEASUREITEMSTRUCT* pItem )
 336 {
 337     if (!pItem)
 338         pItem = (WXMEASUREITEMSTRUCT*)new OWNERITEM;
 339     if (wxListBox::OS2OnMeasure(pItem))
 340     {
 341         POWNERITEM pStruct = (POWNERITEM)pItem;
 342
 343         //
 344         // Save item height
 345         //
 346         m_nItemHeight = pStruct->rclItem.yTop - pStruct->rclItem.yBottom;
 347
 348         //
 349         // Add place for the check mark
 350         //
 351         pStruct->rclItem.xRight += wxOwnerDrawn::GetDefaultMarginWidth();
 352         return long(MRFROM2SHORT((USHORT)m_nItemHeight, (USHORT)(pStruct->rclItem.xRight - pStruct->rclItem.xLeft)));
 353     }
 354     return 0L;
 355 } // end of wxCheckListBox::CreateItem
 356
 357
 358
 359 //
 360 // Check items
 361 // -----------
 362 //
 363 bool wxCheckListBox::IsChecked ( size_t uiIndex) const
 364 {
 365     return GetItem(uiIndex)->IsChecked();
 366 } // end of wxCheckListBox::IsChecked
 367
 368 void wxCheckListBox::Check ( size_t uiIndex, bool bCheck )
 369 {
 370     GetItem(uiIndex)->Check(bCheck);
 371 } // end of wxCheckListBox::Check
 372
 373
 374
 375 //
 376 // Process events
 377 // --------------
 378 //
 379 void wxCheckListBox::OnChar ( wxKeyEvent& rEvent )
 380 {
 381     if (rEvent.GetKeyCode() == WXK_SPACE)
 382         GetItem(GetSelection())->Toggle();
 383     else
 384         rEvent.Skip();
 385 } // end of wxCheckListBox::OnChar
 386
 387 void wxCheckListBox::OnLeftClick ( wxMouseEvent& rEvent )
 388 {
 389     //
 390     // Clicking on the item selects it, clicking on the checkmark toggles
 391     //
 392     if (rEvent.GetX() <= wxOwnerDrawn::GetDefaultMarginWidth())
 393     {
 394         int                         nParentHeight;
 395         wxScreenDC                  vDc;
 396         wxCoord                     vHeight;
 397
 398         GetSize( NULL, &nParentHeight );
 399         vDc.SetFont(GetFont());
 400         vHeight = (wxCoord)(vDc.GetCharHeight() * 2.5);
 401
 402         //
 403         // This, of course, will not work if the LB is scrolled
 404         //
 405         int nY = rEvent.GetY();
 406
 407         nY = nParentHeight - (nY + vHeight);
 408
 409         size_t nItem = (size_t)(nY / vHeight);
 410
 411         if (nItem < m_nNumItems)
 412             GetItem(nItem)->Toggle();
 413         //
 414         // else: it's not an error, just click outside of client zone
 415         //
 416     }
 417     else
 418     {
 419         //
 420         // Implement default behaviour: clicking on the item selects it
 421         //
 422         rEvent.Skip();
 423     }
 424 } // end of wxCheckListBox::OnLeftClick
 425
 426 #endif // wxUSE_CHECKLISTBOX && wxUSE_OWNER_DRAWN