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, size_t nIndex);
  62
  63     //
  64     // Drawing functions
  65     //
  66     virtual bool OnDrawItem( wxDC&         rDc,
  67                              const wxRect& rRect,
  68                              wxODAction    eAct,
  69                              wxODStatus    eStat
  70                            );
  71
  72     //
  73     // Simple accessors
  74     //
  75     bool IsChecked(void) const  { return m_bChecked; }
  76     void Check(bool bCheck);
  77     void Toggle(void) { Check(!IsChecked()); }
  78
  79 private:
  80     bool            m_bChecked;
  81     wxCheckListBox* m_pParent;
  82     size_t          m_nIndex;
  83 }; // end of CLASS wxCheckListBoxItem
  84
  85
  86
  87 wxCheckListBoxItem::wxCheckListBoxItem(wxCheckListBox* pParent, size_t nIndex)
  88                    :wxOwnerDrawn( wxEmptyString, true /* checkable */ )
  89 {
  90     m_bChecked = false;
  91     m_pParent  = pParent;
  92     m_nIndex   = nIndex;
  93
  94     //
  95     // We don't initialize m_nCheckHeight/Width vars because it's
  96     // done in OnMeasure while they are used only in OnDraw and we
  97     // know that there will always be OnMeasure before OnDraw
  98     //
  99     SetMarginWidth(GetDefaultMarginWidth());
 100 } // end of wxCheckListBoxItem::wxCheckListBoxItem
 101
 102
 103
 104 bool wxCheckListBoxItem::OnDrawItem ( wxDC& rDc,
 105                                       const wxRect& rRect,
 106                                       wxODAction eAct,
 107                                       wxODStatus eStat )
 108 {
 109     wxRect vRect = rRect;
 110
 111     ::WinQueryWindowRect( m_pParent->GetHWND(), &rDc.m_vRclPaint );
 112     if (IsChecked())
 113         eStat = (wxOwnerDrawn::wxODStatus)(eStat | wxOwnerDrawn::wxODChecked);
 114
 115     //
 116     // Unfortunately PM doesn't quite get the text position exact.  We need to alter
 117     // it down and to the right, just a little bit.  The coords in rRect are OS/2
 118     // coords not wxWidgets coords.
 119     //
 120     vRect.x += 5;
 121     vRect.y -= 3;
 122     if (wxOwnerDrawn::OnDrawItem( rDc, vRect, eAct, eStat))
 123     {
 124         size_t    nCheckWidth  = GetDefaultMarginWidth();
 125         size_t    nCheckHeight = m_pParent->GetItemHeight();
 126         int       nParentHeight;
 127         int       nX = rRect.GetX();
 128         int       nY = rRect.GetY();
 129         int       nOldY = nY;
 130         wxColour  vColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
 131         wxPen     vPenBack;
 132         wxPen     vPenPrev;
 133
 134         m_pParent->GetSize( NULL, &nParentHeight);
 135
 136         nY = nParentHeight - nY - nCheckHeight;
 137         vPenBack = wxPen(vColour, 1, wxSOLID);
 138
 139         //
 140         // Erase the 1-pixel border
 141         //
 142         rDc.SetPen(vPenBack);
 143         rDc.DrawRectangle( nX, nY, nCheckWidth, nCheckHeight );
 144
 145         //
 146         // Now we draw the smaller rectangle
 147         //
 148         nY++;
 149         nCheckWidth  -= 2;
 150         nCheckHeight -= 2;
 151
 152         //
 153         // Draw hollow gray rectangle
 154         //
 155         rDc.SetPen(*wxGREY_PEN);
 156         rDc.DrawRectangle( nX, nY, nCheckWidth, nCheckHeight );
 157
 158         nX++;
 159         if (IsChecked())
 160         {
 161             //
 162             // Draw the check by loading the sys standard bitmap and drawing it
 163             //
 164             HBITMAP hChkBmp = ::WinGetSysBitmap( HWND_DESKTOP, SBMP_MENUCHECK );
 165             POINTL  vPoint = {nX, nOldY + 3};
 166
 167             ::WinDrawBitmap( rDc.GetHPS(),
 168                              hChkBmp,
 169                              NULL,
 170                              &vPoint,
 171                              NULL,
 172                              NULL,
 173                              DBM_NORMAL
 174                            );
 175         }
 176         return true;
 177     }
 178     return false;
 179 } // end of wxCheckListBoxItem::OnDrawItem
 180
 181 //
 182 // Change the state of the item and redraw it
 183 //
 184 void wxCheckListBoxItem::Check( bool bCheck )
 185 {
 186     m_bChecked = bCheck;
 187
 188     //
 189     // Index may be chanegd because new items were added/deleted
 190     //
 191     if (m_pParent->GetItemIndex(this) != (int)m_nIndex)
 192     {
 193         //
 194         // Update it
 195         //
 196         int nIndex = m_pParent->GetItemIndex(this);
 197
 198         wxASSERT_MSG(nIndex != wxNOT_FOUND, wxT("what does this item do here?"));
 199
 200         m_nIndex = (size_t)nIndex;
 201     }
 202
 203
 204     wxCommandEvent vEvent( wxEVT_COMMAND_CHECKLISTBOX_TOGGLED,m_pParent->GetId());
 205
 206     vEvent.SetInt(m_nIndex);
 207     vEvent.SetEventObject(m_pParent);
 208     m_pParent->ProcessCommand(vEvent);
 209 } // end of wxCheckListBoxItem::Check
 210
 211
 212 // ----------------------------------------------------------------------------
 213 // implementation of wxCheckListBox class
 214 // ----------------------------------------------------------------------------
 215
 216 // define event table
 217 // ------------------
 218 BEGIN_EVENT_TABLE(wxCheckListBox, wxListBox)
 219     EVT_CHAR(wxCheckListBox::OnChar)
 220     EVT_LEFT_DOWN(wxCheckListBox::OnLeftClick)
 221 END_EVENT_TABLE()
 222
 223
 224
 225 //
 226 // Control creation
 227 // ----------------
 228 //
 229
 230 //
 231 // Default ctor: use Create() to really create the control
 232 //
 233 wxCheckListBox::wxCheckListBox()
 234                :wxCheckListBoxBase()
 235 {
 236 } // end of wxCheckListBox::wxCheckListBox
 237
 238 //
 239 // Ctor which creates the associated control
 240 //
 241 wxCheckListBox::wxCheckListBox ( wxWindow* pParent,
 242                                  wxWindowID vId,
 243                                  const wxPoint& rPos,
 244                                  const wxSize& rSize,
 245                                  int nStrings,
 246                                  const wxString asChoices[],
 247                                  long lStyle,
 248                                  const wxValidator& rVal,
 249                                  const wxString& rsName)
 250                :wxCheckListBoxBase()
 251 {
 252     Create( pParent, vId, rPos, rSize, nStrings, asChoices, lStyle | wxLB_OWNERDRAW, rVal, rsName );
 253 } // end of wxCheckListBox::wxCheckListBox
 254
 255 wxCheckListBox::wxCheckListBox ( wxWindow* pParent,
 256                                  wxWindowID vId,
 257                                  const wxPoint& rPos,
 258                                  const wxSize& rSize,
 259                                  const wxArrayString& asChoices,
 260                                  long lStyle,
 261                                  const wxValidator& rVal,
 262                                  const wxString& rsName )
 263                :wxCheckListBoxBase()
 264 {
 265     wxCArrayString chs(asChoices);
 266     Create( pParent, vId, rPos, rSize, chs.GetCount(), chs.GetStrings(),
 267             lStyle | wxLB_OWNERDRAW, rVal, rsName );
 268 } // end of wxCheckListBox::wxCheckListBox
 269
 270 void wxCheckListBox::Delete(unsigned int n)
 271 {
 272     wxCHECK_RET( IsValid(n),
 273                  wxT("invalid index in wxCheckListBox::Delete") );
 274     wxListBox::Delete(n);
 275
 276     //
 277     // Free memory
 278     //
 279     delete m_aItems[n];
 280     m_aItems.RemoveAt(n);
 281 } // end of wxCheckListBox::Delete
 282
 283 void wxCheckListBox::DoInsertItems(const wxArrayString& items, unsigned int pos)
 284 {
 285     // pos is validated in wxListBox
 286     wxListBox::DoInsertItems( items, pos );
 287     unsigned int n = items.GetCount();
 288     for (unsigned int i = 0; i < n; i++)
 289     {
 290         wxOwnerDrawn* pNewItem = CreateItem((size_t)(pos + i));
 291
 292         pNewItem->SetName(items[i]);
 293         m_aItems.Insert(pNewItem, (size_t)(pos + i));
 294         ::WinSendMsg( (HWND)GetHWND(),
 295                       LM_SETITEMHANDLE,
 296                       (MPARAM)(i + pos),
 297                       MPFROMP(pNewItem)
 298                     );
 299     }
 300 } // end of wxCheckListBox::InsertItems
 301
 302 bool wxCheckListBox::SetFont ( const wxFont& rFont )
 303 {
 304     for (unsigned int i = 0; i < m_aItems.GetCount(); i++)
 305         m_aItems[i]->SetFont(rFont);
 306     wxListBox::SetFont(rFont);
 307     return true;
 308 } // end of wxCheckListBox::SetFont
 309
 310
 311
 312 //
 313 // Create/retrieve item
 314 // --------------------
 315 //
 316
 317 //
 318 // Create a check list box item
 319 //
 320 wxOwnerDrawn* wxCheckListBox::CreateItem(size_t nIndex)
 321 {
 322     wxCheckListBoxItem* pItem = new wxCheckListBoxItem( this, nIndex );
 323     return pItem;
 324 } // end of wxCheckListBox::CreateItem
 325
 326
 327
 328 //
 329 // Return item size
 330 // ----------------
 331 //
 332 long wxCheckListBox::OS2OnMeasure ( WXMEASUREITEMSTRUCT* pItem )
 333 {
 334     if (!pItem)
 335         pItem = (WXMEASUREITEMSTRUCT*)new OWNERITEM;
 336     if (wxListBox::OS2OnMeasure(pItem))
 337     {
 338         POWNERITEM pStruct = (POWNERITEM)pItem;
 339
 340         //
 341         // Save item height
 342         //
 343         m_nItemHeight = pStruct->rclItem.yTop - pStruct->rclItem.yBottom;
 344
 345         //
 346         // Add place for the check mark
 347         //
 348         pStruct->rclItem.xRight += wxOwnerDrawn::GetDefaultMarginWidth();
 349         return long(MRFROM2SHORT((USHORT)m_nItemHeight, (USHORT)(pStruct->rclItem.xRight - pStruct->rclItem.xLeft)));
 350     }
 351     return 0L;
 352 } // end of wxCheckListBox::CreateItem
 353
 354
 355
 356 //
 357 // Check items
 358 // -----------
 359 //
 360 bool wxCheckListBox::IsChecked(unsigned int uiIndex) const
 361 {
 362     return GetItem(uiIndex)->IsChecked();
 363 } // end of wxCheckListBox::IsChecked
 364
 365 void wxCheckListBox::Check(unsigned int uiIndex, bool bCheck)
 366 {
 367     GetItem(uiIndex)->Check(bCheck);
 368 } // end of wxCheckListBox::Check
 369
 370
 371
 372 //
 373 // Process events
 374 // --------------
 375 //
 376 void wxCheckListBox::OnChar ( wxKeyEvent& rEvent )
 377 {
 378     if (rEvent.GetKeyCode() == WXK_SPACE)
 379         GetItem(GetSelection())->Toggle();
 380     else
 381         rEvent.Skip();
 382 } // end of wxCheckListBox::OnChar
 383
 384 void wxCheckListBox::OnLeftClick ( wxMouseEvent& rEvent )
 385 {
 386     //
 387     // Clicking on the item selects it, clicking on the checkmark toggles
 388     //
 389     if (rEvent.GetX() <= wxOwnerDrawn::GetDefaultMarginWidth())
 390     {
 391         int                         nParentHeight;
 392         wxScreenDC                  vDc;
 393         wxCoord                     vHeight;
 394
 395         GetSize( NULL, &nParentHeight );
 396         vDc.SetFont(GetFont());
 397         vHeight = (wxCoord)(vDc.GetCharHeight() * 2.5);
 398
 399         //
 400         // This, of course, will not work if the LB is scrolled
 401         //
 402         int nY = rEvent.GetY();
 403
 404         nY = nParentHeight - (nY + vHeight);
 405
 406         size_t nItem = (size_t)(nY / vHeight);
 407
 408         if (nItem < m_nNumItems)
 409             GetItem(nItem)->Toggle();
 410         //
 411         // else: it's not an error, just click outside of client zone
 412         //
 413     }
 414     else
 415     {
 416         //
 417         // Implement default behaviour: clicking on the item selects it
 418         //
 419         rEvent.Skip();
 420     }
 421 } // end of wxCheckListBox::OnLeftClick
 422
 423 #endif // wxUSE_CHECKLISTBOX && wxUSE_OWNER_DRAWN