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 // constants for base class
  44 // ----------------------------------------------------------------------------
  45
  46 static const int CHECK_MARK_WIDTH = 15;
  47
  48 // ----------------------------------------------------------------------------
  49 // private functions
  50 // ----------------------------------------------------------------------------
  51
  52 // get item (converted to right type)
  53 #define GetItem(n)    ((wxCheckListBoxItem *)(GetItem(n)))
  54
  55 // ============================================================================
  56 // implementation
  57 // ============================================================================
  58
  59 IMPLEMENT_DYNAMIC_CLASS(wxCheckListBox, wxListBox)
  60
  61 // ----------------------------------------------------------------------------
  62 // declaration and implementation of wxCheckListBoxItem class
  63 // ----------------------------------------------------------------------------
  64
  65 class wxCheckListBoxItem : public wxOwnerDrawn
  66 {
  67     friend class wxCheckListBox;
  68 public:
  69     //
  70     // ctor
  71     //
  72     wxCheckListBoxItem(wxCheckListBox* pParent, size_t nIndex);
  73
  74     //
  75     // Drawing functions
  76     //
  77     virtual bool OnDrawItem( wxDC&         rDc,
  78                              const wxRect& rRect,
  79                              wxODAction    eAct,
  80                              wxODStatus    eStat
  81                            );
  82
  83     //
  84     // Simple accessors
  85     //
  86     bool IsChecked(void) const  { return m_bChecked; }
  87     void Check(bool bCheck);
  88     void Toggle(void) { Check(!IsChecked()); }
  89
  90     virtual wxString GetName() const { return m_pParent->GetString(m_nIndex); }
  91
  92 private:
  93     bool            m_bChecked;
  94     wxCheckListBox* m_pParent;
  95     size_t          m_nIndex;
  96 }; // end of CLASS wxCheckListBoxItem
  97
  98
  99
 100 wxCheckListBoxItem::wxCheckListBoxItem(wxCheckListBox* pParent, size_t nIndex)
 101                    :wxOwnerDrawn( wxEmptyString, true /* checkable */ )
 102 {
 103     m_bChecked = false;
 104     m_pParent  = pParent;
 105     m_nIndex   = nIndex;
 106
 107     //
 108     // We don't initialize m_nCheckHeight/Width vars because it's
 109     // done in OnMeasure while they are used only in OnDraw and we
 110     // know that there will always be OnMeasure before OnDraw
 111     //
 112     SetMarginWidth(CHECK_MARK_WIDTH);
 113 } // end of wxCheckListBoxItem::wxCheckListBoxItem
 114
 115
 116
 117 bool wxCheckListBoxItem::OnDrawItem ( wxDC& rDc,
 118                                       const wxRect& rRect,
 119                                       wxODAction eAct,
 120                                       wxODStatus eStat )
 121 {
 122     wxRect vRect = rRect;
 123
 124
 125     wxPMDCImpl *impl = (wxPMDCImpl*) rDc.GetImpl();
 126     ::WinQueryWindowRect( m_pParent->GetHWND(), &impl->m_vRclPaint );
 127     if (IsChecked())
 128         eStat = (wxOwnerDrawn::wxODStatus)(eStat | wxOwnerDrawn::wxODChecked);
 129
 130     //
 131     // Unfortunately PM doesn't quite get the text position exact.  We need to alter
 132     // it down and to the right, just a little bit.  The coords in rRect are OS/2
 133     // coords not wxWidgets coords.
 134     //
 135     vRect.x += 5;
 136     vRect.y -= 3;
 137     if (wxOwnerDrawn::OnDrawItem( rDc, vRect, eAct, eStat))
 138     {
 139         size_t    nCheckWidth  = CHECK_MARK_WIDTH;
 140         size_t    nCheckHeight = m_pParent->GetItemHeight();
 141         int       nParentHeight;
 142         int       nX = rRect.GetX();
 143         int       nY = rRect.GetY();
 144         int       nOldY = nY;
 145         wxColour  vColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
 146         wxPen     vPenBack;
 147         wxPen     vPenPrev;
 148
 149         m_pParent->GetSize( NULL, &nParentHeight);
 150
 151         nY = nParentHeight - nY - nCheckHeight;
 152         vPenBack = wxPen(vColour, 1, wxSOLID);
 153
 154         //
 155         // Erase the 1-pixel border
 156         //
 157         rDc.SetPen(vPenBack);
 158         rDc.DrawRectangle( nX, nY, nCheckWidth, nCheckHeight );
 159
 160         //
 161         // Now we draw the smaller rectangle
 162         //
 163         nY++;
 164         nCheckWidth  -= 2;
 165         nCheckHeight -= 2;
 166
 167         //
 168         // Draw hollow gray rectangle
 169         //
 170         rDc.SetPen(*wxGREY_PEN);
 171         rDc.DrawRectangle( nX, nY, nCheckWidth, nCheckHeight );
 172
 173         nX++;
 174         if (IsChecked())
 175         {
 176             //
 177             // Draw the check by loading the sys standard bitmap and drawing it
 178             //
 179             HBITMAP hChkBmp = ::WinGetSysBitmap( HWND_DESKTOP, SBMP_MENUCHECK );
 180             POINTL  vPoint = {nX, nOldY + 3};
 181             wxPMDCImpl *impl = (wxPMDCImpl*) rDc.GetImpl();
 182             ::WinDrawBitmap( impl->GetHPS(),
 183                              hChkBmp,
 184                              NULL,
 185                              &vPoint,
 186                              NULL,
 187                              NULL,
 188                              DBM_NORMAL
 189                            );
 190         }
 191         return true;
 192     }
 193     return false;
 194 } // end of wxCheckListBoxItem::OnDrawItem
 195
 196 //
 197 // Change the state of the item and redraw it
 198 //
 199 void wxCheckListBoxItem::Check( bool bCheck )
 200 {
 201     m_bChecked = bCheck;
 202
 203     //
 204     // Index may be chanegd because new items were added/deleted
 205     //
 206     if (m_pParent->GetItemIndex(this) != (int)m_nIndex)
 207     {
 208         //
 209         // Update it
 210         //
 211         int nIndex = m_pParent->GetItemIndex(this);
 212
 213         wxASSERT_MSG(nIndex != wxNOT_FOUND, wxT("what does this item do here?"));
 214
 215         m_nIndex = (size_t)nIndex;
 216     }
 217
 218
 219     wxCommandEvent vEvent( wxEVT_COMMAND_CHECKLISTBOX_TOGGLED,m_pParent->GetId());
 220
 221     vEvent.SetInt(m_nIndex);
 222     vEvent.SetEventObject(m_pParent);
 223     m_pParent->ProcessCommand(vEvent);
 224 } // end of wxCheckListBoxItem::Check
 225
 226
 227 // ----------------------------------------------------------------------------
 228 // implementation of wxCheckListBox class
 229 // ----------------------------------------------------------------------------
 230
 231 // define event table
 232 // ------------------
 233 BEGIN_EVENT_TABLE(wxCheckListBox, wxListBox)
 234     EVT_CHAR(wxCheckListBox::OnChar)
 235     EVT_LEFT_DOWN(wxCheckListBox::OnLeftClick)
 236 END_EVENT_TABLE()
 237
 238
 239
 240 //
 241 // Control creation
 242 // ----------------
 243 //
 244
 245 //
 246 // Default ctor: use Create() to really create the control
 247 //
 248 wxCheckListBox::wxCheckListBox()
 249                :wxCheckListBoxBase()
 250 {
 251 } // end of wxCheckListBox::wxCheckListBox
 252
 253 //
 254 // Ctor which creates the associated control
 255 //
 256 wxCheckListBox::wxCheckListBox ( wxWindow* pParent,
 257                                  wxWindowID vId,
 258                                  const wxPoint& rPos,
 259                                  const wxSize& rSize,
 260                                  int nStrings,
 261                                  const wxString asChoices[],
 262                                  long lStyle,
 263                                  const wxValidator& rVal,
 264                                  const wxString& rsName)
 265                :wxCheckListBoxBase()
 266 {
 267     Create( pParent, vId, rPos, rSize, nStrings, asChoices, lStyle | wxLB_OWNERDRAW, rVal, rsName );
 268 } // end of wxCheckListBox::wxCheckListBox
 269
 270 wxCheckListBox::wxCheckListBox ( wxWindow* pParent,
 271                                  wxWindowID vId,
 272                                  const wxPoint& rPos,
 273                                  const wxSize& rSize,
 274                                  const wxArrayString& asChoices,
 275                                  long lStyle,
 276                                  const wxValidator& rVal,
 277                                  const wxString& rsName )
 278                :wxCheckListBoxBase()
 279 {
 280     wxCArrayString chs(asChoices);
 281     Create( pParent, vId, rPos, rSize, chs.GetCount(), chs.GetStrings(),
 282             lStyle | wxLB_OWNERDRAW, rVal, rsName );
 283 } // end of wxCheckListBox::wxCheckListBox
 284
 285 void wxCheckListBox::Delete(unsigned int n)
 286 {
 287     wxCHECK_RET( IsValid(n),
 288                  wxT("invalid index in wxCheckListBox::Delete") );
 289     wxListBox::Delete(n);
 290
 291     //
 292     // Free memory
 293     //
 294     delete m_aItems[n];
 295     m_aItems.RemoveAt(n);
 296 } // end of wxCheckListBox::Delete
 297
 298 bool wxCheckListBox::SetFont ( const wxFont& rFont )
 299 {
 300     for (unsigned int i = 0; i < m_aItems.GetCount(); i++)
 301         m_aItems[i]->SetFont(rFont);
 302     wxListBox::SetFont(rFont);
 303     return true;
 304 } // end of wxCheckListBox::SetFont
 305
 306
 307
 308 //
 309 // Create/retrieve item
 310 // --------------------
 311 //
 312
 313 //
 314 // Create a check list box item
 315 //
 316 wxOwnerDrawn* wxCheckListBox::CreateItem(size_t nIndex)
 317 {
 318     wxCheckListBoxItem* pItem = new wxCheckListBoxItem( this, nIndex );
 319     return pItem;
 320 } // end of wxCheckListBox::CreateItem
 321
 322
 323
 324 //
 325 // Return item size
 326 // ----------------
 327 //
 328 long wxCheckListBox::OS2OnMeasure ( WXMEASUREITEMSTRUCT* pItem )
 329 {
 330     if (!pItem)
 331         pItem = (WXMEASUREITEMSTRUCT*)new OWNERITEM;
 332     if (wxListBox::OS2OnMeasure(pItem))
 333     {
 334         POWNERITEM pStruct = (POWNERITEM)pItem;
 335
 336         //
 337         // Save item height
 338         //
 339         m_nItemHeight = pStruct->rclItem.yTop - pStruct->rclItem.yBottom;
 340
 341         //
 342         // Add place for the check mark
 343         //
 344         pStruct->rclItem.xRight += CHECK_MARK_WIDTH;
 345         return long(MRFROM2SHORT((USHORT)m_nItemHeight, (USHORT)(pStruct->rclItem.xRight - pStruct->rclItem.xLeft)));
 346     }
 347     return 0L;
 348 } // end of wxCheckListBox::CreateItem
 349
 350
 351
 352 //
 353 // Check items
 354 // -----------
 355 //
 356 bool wxCheckListBox::IsChecked(unsigned int uiIndex) const
 357 {
 358     return GetItem(uiIndex)->IsChecked();
 359 } // end of wxCheckListBox::IsChecked
 360
 361 void wxCheckListBox::Check(unsigned int uiIndex, bool bCheck)
 362 {
 363     GetItem(uiIndex)->Check(bCheck);
 364 } // end of wxCheckListBox::Check
 365
 366
 367
 368 //
 369 // Process events
 370 // --------------
 371 //
 372 void wxCheckListBox::OnChar ( wxKeyEvent& rEvent )
 373 {
 374     if (rEvent.GetKeyCode() == WXK_SPACE)
 375         GetItem(GetSelection())->Toggle();
 376     else
 377         rEvent.Skip();
 378 } // end of wxCheckListBox::OnChar
 379
 380 void wxCheckListBox::OnLeftClick ( wxMouseEvent& rEvent )
 381 {
 382     //
 383     // Clicking on the item selects it, clicking on the checkmark toggles
 384     //
 385     if (rEvent.GetX() <= CHECK_MARK_WIDTH)
 386     {
 387         int                         nParentHeight;
 388         wxScreenDC                  vDc;
 389         wxCoord                     vHeight;
 390
 391         GetSize( NULL, &nParentHeight );
 392         vDc.SetFont(GetFont());
 393         vHeight = (wxCoord)(vDc.GetCharHeight() * 2.5);
 394
 395         //
 396         // This, of course, will not work if the LB is scrolled
 397         //
 398         int nY = rEvent.GetY();
 399
 400         nY = nParentHeight - (nY + vHeight);
 401
 402         size_t nItem = (size_t)(nY / vHeight);
 403
 404         if (nItem < m_nNumItems)
 405             GetItem(nItem)->Toggle();
 406         //
 407         // else: it's not an error, just click outside of client zone
 408         //
 409     }
 410     else
 411     {
 412         //
 413         // Implement default behaviour: clicking on the item selects it
 414         //
 415         rEvent.Skip();
 416     }
 417 } // end of wxCheckListBox::OnLeftClick
 418
 419 #endif // wxUSE_CHECKLISTBOX && wxUSE_OWNER_DRAWN