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 // Copyright:   (c) David Webster
   8 // Licence:     wxWindows licence
   9 ///////////////////////////////////////////////////////////////////////////////
  10
  11 // ============================================================================
  12 // headers & declarations
  13 // ============================================================================
  14
  15 // For compilers that support precompilation, includes "wx.h".
  16 #include "wx/wxprec.h"
  17
  18 #if wxUSE_CHECKLISTBOX && wxUSE_OWNER_DRAWN
  19
  20 #include "wx/checklst.h"
  21
  22 #ifndef WX_PRECOMP
  23     #include "wx/object.h"
  24     #include "wx/log.h"
  25     #include "wx/window.h"
  26     #include "wx/dcmemory.h"
  27     #include "wx/dcscreen.h"
  28     #include "wx/settings.h"
  29     #include "wx/listbox.h"
  30     #include "wx/bitmap.h"
  31     #include "wx/colour.h"
  32     #include "wx/font.h"
  33 #endif
  34
  35 #include "wx/os2/dc.h"
  36 #include "wx/ownerdrw.h"
  37
  38 #define INCL_PM
  39 #include <os2.h>
  40
  41 // ----------------------------------------------------------------------------
  42 // constants for base class
  43 // ----------------------------------------------------------------------------
  44
  45 static const int CHECK_MARK_WIDTH = 15;
  46
  47 // ----------------------------------------------------------------------------
  48 // private functions
  49 // ----------------------------------------------------------------------------
  50
  51 // get item (converted to right type)
  52 #define GetItem(n)    ((wxCheckListBoxItem *)(GetItem(n)))
  53
  54 // ============================================================================
  55 // implementation
  56 // ============================================================================
  57
  58 // ----------------------------------------------------------------------------
  59 // declaration and implementation of wxCheckListBoxItem class
  60 // ----------------------------------------------------------------------------
  61
  62 class wxCheckListBoxItem : public wxOwnerDrawn
  63 {
  64     friend class wxCheckListBox;
  65 public:
  66     //
  67     // ctor
  68     //
  69     wxCheckListBoxItem(wxCheckListBox* pParent, size_t nIndex);
  70
  71     //
  72     // Drawing functions
  73     //
  74     virtual bool OnDrawItem( wxDC&         rDc,
  75                              const wxRect& rRect,
  76                              wxODAction    eAct,
  77                              wxODStatus    eStat
  78                            );
  79
  80     //
  81     // Simple accessors
  82     //
  83     bool IsChecked(void) const  { return m_bChecked; }
  84     void Check(bool bCheck);
  85     void Toggle(void) { Check(!IsChecked()); }
  86
  87     virtual wxString GetName() const { return m_pParent->GetString(m_nIndex); }
  88
  89 private:
  90     bool            m_bChecked;
  91     wxCheckListBox* m_pParent;
  92     size_t          m_nIndex;
  93 }; // end of CLASS wxCheckListBoxItem
  94
  95
  96
  97 wxCheckListBoxItem::wxCheckListBoxItem(wxCheckListBox* pParent, size_t nIndex)
  98                    :wxOwnerDrawn( wxEmptyString, true /* checkable */ )
  99 {
 100     m_bChecked = false;
 101     m_pParent  = pParent;
 102     m_nIndex   = nIndex;
 103
 104     //
 105     // We don't initialize m_nCheckHeight/Width vars because it's
 106     // done in OnMeasure while they are used only in OnDraw and we
 107     // know that there will always be OnMeasure before OnDraw
 108     //
 109     SetMarginWidth(CHECK_MARK_WIDTH);
 110 } // end of wxCheckListBoxItem::wxCheckListBoxItem
 111
 112
 113
 114 bool wxCheckListBoxItem::OnDrawItem ( wxDC& rDc,
 115                                       const wxRect& rRect,
 116                                       wxODAction eAct,
 117                                       wxODStatus eStat )
 118 {
 119     wxRect vRect = rRect;
 120
 121
 122     wxPMDCImpl *impl = (wxPMDCImpl*) rDc.GetImpl();
 123     ::WinQueryWindowRect( m_pParent->GetHWND(), &impl->m_vRclPaint );
 124     if (IsChecked())
 125         eStat = (wxOwnerDrawn::wxODStatus)(eStat | wxOwnerDrawn::wxODChecked);
 126
 127     //
 128     // Unfortunately PM doesn't quite get the text position exact.  We need to alter
 129     // it down and to the right, just a little bit.  The coords in rRect are OS/2
 130     // coords not wxWidgets coords.
 131     //
 132     vRect.x += 5;
 133     vRect.y -= 3;
 134     if (wxOwnerDrawn::OnDrawItem( rDc, vRect, eAct, eStat))
 135     {
 136         size_t    nCheckWidth  = CHECK_MARK_WIDTH;
 137         size_t    nCheckHeight = m_pParent->GetItemHeight();
 138         int       nParentHeight;
 139         int       nX = rRect.GetX();
 140         int       nY = rRect.GetY();
 141         int       nOldY = nY;
 142         wxColour  vColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
 143         wxPen     vPenBack;
 144         wxPen     vPenPrev;
 145
 146         m_pParent->GetSize( NULL, &nParentHeight);
 147
 148         nY = nParentHeight - nY - nCheckHeight;
 149         vPenBack = wxPen(vColour, 1, wxSOLID);
 150
 151         //
 152         // Erase the 1-pixel border
 153         //
 154         rDc.SetPen(vPenBack);
 155         rDc.DrawRectangle( nX, nY, nCheckWidth, nCheckHeight );
 156
 157         //
 158         // Now we draw the smaller rectangle
 159         //
 160         nY++;
 161         nCheckWidth  -= 2;
 162         nCheckHeight -= 2;
 163
 164         //
 165         // Draw hollow gray rectangle
 166         //
 167         rDc.SetPen(*wxGREY_PEN);
 168         rDc.DrawRectangle( nX, nY, nCheckWidth, nCheckHeight );
 169
 170         nX++;
 171         if (IsChecked())
 172         {
 173             //
 174             // Draw the check by loading the sys standard bitmap and drawing it
 175             //
 176             HBITMAP hChkBmp = ::WinGetSysBitmap( HWND_DESKTOP, SBMP_MENUCHECK );
 177             POINTL  vPoint = {nX, nOldY + 3};
 178             wxPMDCImpl *impl = (wxPMDCImpl*) rDc.GetImpl();
 179             ::WinDrawBitmap( impl->GetHPS(),
 180                              hChkBmp,
 181                              NULL,
 182                              &vPoint,
 183                              NULL,
 184                              NULL,
 185                              DBM_NORMAL
 186                            );
 187         }
 188         return true;
 189     }
 190     return false;
 191 } // end of wxCheckListBoxItem::OnDrawItem
 192
 193 //
 194 // Change the state of the item and redraw it
 195 //
 196 void wxCheckListBoxItem::Check( bool bCheck )
 197 {
 198     m_bChecked = bCheck;
 199
 200     //
 201     // Index may be chanegd because new items were added/deleted
 202     //
 203     if (m_pParent->GetItemIndex(this) != (int)m_nIndex)
 204     {
 205         //
 206         // Update it
 207         //
 208         int nIndex = m_pParent->GetItemIndex(this);
 209
 210         wxASSERT_MSG(nIndex != wxNOT_FOUND, wxT("what does this item do here?"));
 211
 212         m_nIndex = (size_t)nIndex;
 213     }
 214
 215
 216     wxCommandEvent vEvent( wxEVT_CHECKLISTBOX,m_pParent->GetId());
 217
 218     vEvent.SetInt(m_nIndex);
 219     vEvent.SetEventObject(m_pParent);
 220     m_pParent->ProcessCommand(vEvent);
 221 } // end of wxCheckListBoxItem::Check
 222
 223
 224 // ----------------------------------------------------------------------------
 225 // implementation of wxCheckListBox class
 226 // ----------------------------------------------------------------------------
 227
 228 // define event table
 229 // ------------------
 230 BEGIN_EVENT_TABLE(wxCheckListBox, wxListBox)
 231     EVT_CHAR(wxCheckListBox::OnChar)
 232     EVT_LEFT_DOWN(wxCheckListBox::OnLeftClick)
 233 END_EVENT_TABLE()
 234
 235
 236
 237 //
 238 // Control creation
 239 // ----------------
 240 //
 241
 242 //
 243 // Default ctor: use Create() to really create the control
 244 //
 245 wxCheckListBox::wxCheckListBox()
 246                :wxCheckListBoxBase()
 247 {
 248 } // end of wxCheckListBox::wxCheckListBox
 249
 250 //
 251 // Ctor which creates the associated control
 252 //
 253 wxCheckListBox::wxCheckListBox ( wxWindow* pParent,
 254                                  wxWindowID vId,
 255                                  const wxPoint& rPos,
 256                                  const wxSize& rSize,
 257                                  int nStrings,
 258                                  const wxString asChoices[],
 259                                  long lStyle,
 260                                  const wxValidator& rVal,
 261                                  const wxString& rsName)
 262                :wxCheckListBoxBase()
 263 {
 264     Create( pParent, vId, rPos, rSize, nStrings, asChoices, lStyle | wxLB_OWNERDRAW, rVal, rsName );
 265 } // end of wxCheckListBox::wxCheckListBox
 266
 267 wxCheckListBox::wxCheckListBox ( wxWindow* pParent,
 268                                  wxWindowID vId,
 269                                  const wxPoint& rPos,
 270                                  const wxSize& rSize,
 271                                  const wxArrayString& asChoices,
 272                                  long lStyle,
 273                                  const wxValidator& rVal,
 274                                  const wxString& rsName )
 275                :wxCheckListBoxBase()
 276 {
 277     wxCArrayString chs(asChoices);
 278     Create( pParent, vId, rPos, rSize, chs.GetCount(), chs.GetStrings(),
 279             lStyle | wxLB_OWNERDRAW, rVal, rsName );
 280 } // end of wxCheckListBox::wxCheckListBox
 281
 282 void wxCheckListBox::Delete(unsigned int n)
 283 {
 284     wxCHECK_RET( IsValid(n),
 285                  wxT("invalid index in wxCheckListBox::Delete") );
 286     wxListBox::Delete(n);
 287
 288     //
 289     // Free memory
 290     //
 291     delete m_aItems[n];
 292     m_aItems.RemoveAt(n);
 293 } // end of wxCheckListBox::Delete
 294
 295 bool wxCheckListBox::SetFont ( const wxFont& rFont )
 296 {
 297     for (unsigned int i = 0; i < m_aItems.GetCount(); i++)
 298         m_aItems[i]->SetFont(rFont);
 299     wxListBox::SetFont(rFont);
 300     return true;
 301 } // end of wxCheckListBox::SetFont
 302
 303
 304
 305 //
 306 // Create/retrieve item
 307 // --------------------
 308 //
 309
 310 //
 311 // Create a check list box item
 312 //
 313 wxOwnerDrawn* wxCheckListBox::CreateItem(size_t nIndex)
 314 {
 315     wxCheckListBoxItem* pItem = new wxCheckListBoxItem( this, nIndex );
 316     return pItem;
 317 } // end of wxCheckListBox::CreateItem
 318
 319
 320
 321 //
 322 // Return item size
 323 // ----------------
 324 //
 325 long wxCheckListBox::OS2OnMeasure ( WXMEASUREITEMSTRUCT* pItem )
 326 {
 327     if (!pItem)
 328         pItem = (WXMEASUREITEMSTRUCT*)new OWNERITEM;
 329     if (wxListBox::OS2OnMeasure(pItem))
 330     {
 331         POWNERITEM pStruct = (POWNERITEM)pItem;
 332
 333         //
 334         // Save item height
 335         //
 336         m_nItemHeight = pStruct->rclItem.yTop - pStruct->rclItem.yBottom;
 337
 338         //
 339         // Add place for the check mark
 340         //
 341         pStruct->rclItem.xRight += CHECK_MARK_WIDTH;
 342         return long(MRFROM2SHORT((USHORT)m_nItemHeight, (USHORT)(pStruct->rclItem.xRight - pStruct->rclItem.xLeft)));
 343     }
 344     return 0L;
 345 } // end of wxCheckListBox::CreateItem
 346
 347
 348
 349 //
 350 // Check items
 351 // -----------
 352 //
 353 bool wxCheckListBox::IsChecked(unsigned int uiIndex) const
 354 {
 355     return GetItem(uiIndex)->IsChecked();
 356 } // end of wxCheckListBox::IsChecked
 357
 358 void wxCheckListBox::Check(unsigned int uiIndex, bool bCheck)
 359 {
 360     GetItem(uiIndex)->Check(bCheck);
 361 } // end of wxCheckListBox::Check
 362
 363
 364
 365 //
 366 // Process events
 367 // --------------
 368 //
 369 void wxCheckListBox::OnChar ( wxKeyEvent& rEvent )
 370 {
 371     if (rEvent.GetKeyCode() == WXK_SPACE)
 372         GetItem(GetSelection())->Toggle();
 373     else
 374         rEvent.Skip();
 375 } // end of wxCheckListBox::OnChar
 376
 377 void wxCheckListBox::OnLeftClick ( wxMouseEvent& rEvent )
 378 {
 379     //
 380     // Clicking on the item selects it, clicking on the checkmark toggles
 381     //
 382     if (rEvent.GetX() <= CHECK_MARK_WIDTH)
 383     {
 384         int                         nParentHeight;
 385         wxScreenDC                  vDc;
 386         wxCoord                     vHeight;
 387
 388         GetSize( NULL, &nParentHeight );
 389         vDc.SetFont(GetFont());
 390         vHeight = (wxCoord)(vDc.GetCharHeight() * 2.5);
 391
 392         //
 393         // This, of course, will not work if the LB is scrolled
 394         //
 395         int nY = rEvent.GetY();
 396
 397         nY = nParentHeight - (nY + vHeight);
 398
 399         size_t nItem = (size_t)(nY / vHeight);
 400
 401         if (nItem < m_nNumItems)
 402             GetItem(nItem)->Toggle();
 403         //
 404         // else: it's not an error, just click outside of client zone
 405         //
 406     }
 407     else
 408     {
 409         //
 410         // Implement default behaviour: clicking on the item selects it
 411         //
 412         rEvent.Skip();
 413     }
 414 } // end of wxCheckListBox::OnLeftClick
 415
 416 #endif // wxUSE_CHECKLISTBOX && wxUSE_OWNER_DRAWN