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