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