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