src/os2/checklst.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        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_OWNER_DRAWN
  20
  21 #include "wx/object.h"
  22 #include "wx/colour.h"
  23 #include "wx/font.h"
  24 #include "wx/bitmap.h"
  25 #include "wx/window.h"
  26 #include "wx/listbox.h"
  27 #include "wx/ownerdrw.h"
  28 #include "wx/settings.h"
  29 #include "wx/dcmemory.h"
  30 #include "wx/dcscreen.h"
  31 #include "wx/os2/checklst.h"
  32 #include "wx/log.h"
  33
  34 #define INCL_PM
  35 #include <os2.h>
  36
  37 // ----------------------------------------------------------------------------
  38 // private functions
  39 // ----------------------------------------------------------------------------
  40
  41 // get item (converted to right type)
  42 #define GetItem(n)    ((wxCheckListBoxItem *)(GetItem(n)))
  43
  44 // ============================================================================
  45 // implementation of wxCheckListBoxBase
  46 // ============================================================================
  47
  48 wxCheckListBoxBase::wxCheckListBoxBase()
  49 {
  50 }
  51
  52 // ============================================================================
  53 // implementation of wxCheckListBox
  54 // ============================================================================
  55
  56 IMPLEMENT_DYNAMIC_CLASS(wxCheckListBox, wxListBox)
  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
  70                        ,size_t          nIndex
  71                       );
  72
  73     //
  74     // Drawing functions
  75     //
  76     virtual bool OnDrawItem( wxDC&         rDc
  77                             ,const wxRect& rRect
  78                             ,wxODAction    eAct
  79                             ,wxODStatus    eStat
  80                            );
  81
  82     //
  83     // Simple accessors
  84     //
  85     bool IsChecked(void) const  { return m_bChecked; }
  86     void Check(bool bCheck);
  87     void Toggle(void) { Check(!IsChecked()); }
  88
  89 private:
  90     bool                            m_bChecked;
  91     wxCheckListBox*                 m_pParent;
  92     size_t                          m_nIndex;
  93 }; // end of CLASS wxCheckListBoxItem
  94
  95 wxCheckListBoxItem::wxCheckListBoxItem (
  96   wxCheckListBox*                   pParent
  97 , size_t                            nIndex
  98 )
  99 : wxOwnerDrawn( ""
 100                ,TRUE // checkable
 101               )
 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(GetDefaultMarginWidth());
 113 } // end of wxCheckListBoxItem::wxCheckListBoxItem
 114
 115 bool wxCheckListBoxItem::OnDrawItem (
 116   wxDC&                             rDc
 117 , const wxRect&                     rRect
 118 , wxODAction                        eAct
 119 , wxODStatus                        eStat
 120 )
 121 {
 122     wxRect                          vRect = rRect;
 123
 124     ::WinQueryWindowRect( m_pParent->GetHWND()
 125                          ,&rDc.m_vRclPaint
 126                         );
 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 wxWindows coords.
 134     //
 135     vRect.x += 5;
 136     vRect.y -= 3;
 137     if (wxOwnerDrawn::OnDrawItem( rDc
 138                                  ,vRect
 139                                  ,eAct
 140                                  ,eStat))
 141     {
 142         size_t                      nCheckWidth  = GetDefaultMarginWidth();
 143         size_t                      nCheckHeight = m_pParent->GetItemHeight();
 144         int                         nParentHeight;
 145         int                         nX = rRect.GetX();
 146         int                         nY = rRect.GetY();
 147         int                         nOldY = nY;
 148         wxColour                    vColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
 149         wxPen                       vPenBack;
 150         wxPen                       vPenGray;
 151         wxPen                       vPenPrev;
 152
 153         m_pParent->GetSize( NULL
 154                            ,&nParentHeight
 155                           );
 156
 157         nY = nParentHeight - nY - nCheckHeight;
 158         vPenBack = wxPen(vColour, 1, wxSOLID);
 159         vPenGray = wxPen(wxColour(127, 127, 127), 1, wxSOLID);
 160
 161         //
 162         // Erase the 1-pixel border
 163         //
 164         rDc.SetPen(vPenBack);
 165         rDc.DrawRectangle( nX
 166                           ,nY
 167                           ,nCheckWidth
 168                           ,nCheckHeight
 169                          );
 170
 171         //
 172         // Now we draw the smaller rectangle
 173         //
 174         nY++;
 175         nCheckWidth  -= 2;
 176         nCheckHeight -= 2;
 177
 178         //
 179         // Draw hollow gray rectangle
 180         //
 181         rDc.SetPen(vPenGray);
 182         rDc.DrawRectangle( nX
 183                           ,nY
 184                           ,nCheckWidth
 185                           ,nCheckHeight
 186                          );
 187
 188         nX++;
 189         if (IsChecked())
 190         {
 191             //
 192             // Draw the check by loading the sys standard bitmap and drawing it
 193             //
 194             HBITMAP                 hChkBmp = ::WinGetSysBitmap( HWND_DESKTOP
 195                                                                 ,SBMP_MENUCHECK
 196                                                                );
 197             POINTL                  vPoint = {nX, nOldY + 3};
 198
 199             ::WinDrawBitmap( rDc.GetHPS()
 200                             ,hChkBmp
 201                             ,NULL
 202                             ,&vPoint
 203                             ,NULL
 204                             ,NULL
 205                             ,DBM_NORMAL
 206                            );
 207         }
 208         return TRUE;
 209     }
 210     return FALSE;
 211 } // end of wxCheckListBoxItem::OnDrawItem
 212
 213 //
 214 // Change the state of the item and redraw it
 215 //
 216 void wxCheckListBoxItem::Check (
 217   bool                              bCheck
 218 )
 219 {
 220     m_bChecked = bCheck;
 221
 222     //
 223     // Index may be chanegd because new items were added/deleted
 224     //
 225     if (m_pParent->GetItemIndex(this) != (int)m_nIndex)
 226     {
 227         //
 228         // Update it
 229         //
 230         int                         nIndex = m_pParent->GetItemIndex(this);
 231
 232         wxASSERT_MSG(nIndex != wxNOT_FOUND, wxT("what does this item do here?"));
 233
 234         m_nIndex = (size_t)nIndex;
 235     }
 236
 237     HWND                            hWndListbox = (HWND)m_pParent->GetHWND();
 238     RECTL                           rUpdate;
 239     MRESULT                         mRc;
 240
 241     wxCommandEvent                  vEvent( wxEVT_COMMAND_CHECKLISTBOX_TOGGLED
 242                                            ,m_pParent->GetId()
 243                                           );
 244
 245     vEvent.SetInt(m_nIndex);
 246     vEvent.SetEventObject(m_pParent);
 247     m_pParent->ProcessCommand(vEvent);
 248 } // end of wxCheckListBoxItem::Check
 249
 250 // ----------------------------------------------------------------------------
 251 // implementation of wxCheckListBox class
 252 // ----------------------------------------------------------------------------
 253
 254 // define event table
 255 // ------------------
 256 BEGIN_EVENT_TABLE(wxCheckListBox, wxListBox)
 257   EVT_CHAR(wxCheckListBox::OnChar)
 258   EVT_LEFT_DOWN(wxCheckListBox::OnLeftClick)
 259 END_EVENT_TABLE()
 260
 261 //
 262 // Control creation
 263 // ----------------
 264 //
 265
 266 //
 267 // Default ctor: use Create() to really create the control
 268 //
 269 wxCheckListBox::wxCheckListBox()
 270 : wxListBox()
 271 {
 272 } // end of wxCheckListBox::wxCheckListBox
 273
 274 //
 275 // Ctor which creates the associated control
 276 //
 277 wxCheckListBox::wxCheckListBox (
 278   wxWindow*                         pParent
 279 , wxWindowID                        vId
 280 , const wxPoint&                    rPos
 281 , const wxSize&                     rSize
 282 , int                               nStrings
 283 , const wxString                    asChoices[]
 284 , long                              lStyle
 285 , const wxValidator&                rVal
 286 , const wxString&                   rsName
 287 )
 288               : wxListBox()
 289 {
 290     Create( pParent
 291            ,vId
 292            ,rPos
 293            ,rSize
 294            ,nStrings
 295            ,asChoices
 296            ,lStyle | wxLB_OWNERDRAW
 297            ,rVal
 298            ,rsName
 299           );
 300 } // end of wxCheckListBox::wxCheckListBox
 301
 302 void wxCheckListBox::Delete(
 303   int                               N
 304 )
 305 {
 306     wxCHECK_RET( N >= 0 && N < m_nNumItems,
 307                  wxT("invalid index in wxListBox::Delete") );
 308     wxListBox::Delete(N);
 309
 310     //
 311     // Free memory
 312     //
 313     delete m_aItems[N];
 314     m_aItems.RemoveAt(N);
 315 } // end of wxCheckListBox::Delete
 316
 317 void wxCheckListBox::InsertItems (
 318   int                               nItems
 319 , const wxString                    asItems[]
 320 , int                               nPos
 321 )
 322 {
 323     int                             i;
 324
 325     wxCHECK_RET( nPos >= 0 && nPos <= m_nNumItems,
 326                  wxT("invalid index in wxCheckListBox::InsertItems") );
 327
 328     wxListBox::InsertItems( nItems
 329                            ,asItems
 330                            ,nPos
 331                           );
 332     for (i = 0; i < nItems; i++)
 333     {
 334         wxOwnerDrawn*               pNewItem = CreateItem((size_t)(nPos + i));
 335
 336         pNewItem->SetName(asItems[i]);
 337         m_aItems.Insert(pNewItem, (size_t)(nPos + i));
 338         ::WinSendMsg( (HWND)GetHWND()
 339                      ,LM_SETITEMHANDLE
 340                      ,(MPARAM)(i + nPos)
 341                      ,MPFROMP(pNewItem)
 342                     );
 343     }
 344 } // end of wxCheckListBox::InsertItems
 345
 346 bool wxCheckListBox::SetFont (
 347   const wxFont&                     rFont
 348 )
 349 {
 350     size_t                          i;
 351
 352     for (i = 0; i < m_aItems.GetCount(); i++)
 353         m_aItems[i]->SetFont(rFont);
 354     wxListBox::SetFont(rFont);
 355     return TRUE;
 356 } // end of wxCheckListBox::SetFont
 357
 358 //
 359 // Create/retrieve item
 360 // --------------------
 361 //
 362
 363 //
 364 // Create a check list box item
 365 //
 366 wxOwnerDrawn* wxCheckListBox::CreateItem (
 367   size_t                            nIndex
 368 )
 369 {
 370     wxCheckListBoxItem*             pItem = new wxCheckListBoxItem( this
 371                                                                    ,nIndex
 372                                                                   );
 373     return pItem;
 374 } // end of wxCheckListBox::CreateItem
 375
 376 //
 377 // Return item size
 378 // ----------------
 379 //
 380 long wxCheckListBox::OS2OnMeasure (
 381   WXMEASUREITEMSTRUCT*             pItem
 382 )
 383 {
 384     if (!pItem)
 385         pItem = (WXMEASUREITEMSTRUCT*)new OWNERITEM;
 386     if (wxListBox::OS2OnMeasure(pItem) )
 387     {
 388         POWNERITEM                  pStruct = (POWNERITEM)pItem;
 389
 390         //
 391         // Save item height
 392         //
 393         m_nItemHeight = pStruct->rclItem.yTop - pStruct->rclItem.yBottom;
 394
 395         //
 396         // Add place for the check mark
 397         //
 398         pStruct->rclItem.xRight += wxOwnerDrawn::GetDefaultMarginWidth();
 399         return long(MRFROM2SHORT((USHORT)m_nItemHeight, (USHORT)(pStruct->rclItem.xRight - pStruct->rclItem.xLeft)));
 400     }
 401     return 0L;
 402 } // end of wxCheckListBox::CreateItem
 403
 404 //
 405 // Check items
 406 // -----------
 407 //
 408 bool wxCheckListBox::IsChecked (
 409   size_t                            uiIndex
 410 ) const
 411 {
 412     return GetItem(uiIndex)->IsChecked();
 413 } // end of wxCheckListBox::IsChecked
 414
 415 void wxCheckListBox::Check (
 416   size_t                            uiIndex
 417 , bool                              bCheck
 418 )
 419 {
 420     GetItem(uiIndex)->Check(bCheck);
 421 } // end of wxCheckListBox::Check
 422
 423 //
 424 // Process events
 425 // --------------
 426 //
 427 void wxCheckListBox::OnChar (
 428   wxKeyEvent&                       rEvent
 429 )
 430 {
 431     if (rEvent.KeyCode() == WXK_SPACE)
 432         GetItem(GetSelection())->Toggle();
 433     else
 434         rEvent.Skip();
 435 } // end of wxCheckListBox::OnChar
 436
 437 void wxCheckListBox::OnLeftClick (
 438   wxMouseEvent&                     rEvent
 439 )
 440 {
 441     //
 442     // Clicking on the item selects it, clicking on the checkmark toggles
 443     //
 444     if (rEvent.GetX() <= wxOwnerDrawn::GetDefaultMarginWidth())
 445     {
 446         int                         nParentHeight;
 447         wxScreenDC                  vDc;
 448         wxCoord                     vHeight;
 449
 450         GetSize( NULL
 451                 ,&nParentHeight
 452                );
 453         vDc.SetFont(GetFont());
 454         vHeight = vDc.GetCharHeight() * 2.5;
 455
 456         //
 457         // This, of course, will not work if the LB is scrolled
 458         //
 459         int                         nY = rEvent.GetY();
 460
 461         nY = nParentHeight - (nY + vHeight);
 462
 463         size_t                      nItem = (size_t)(nY / vHeight);
 464
 465         if (nItem < (size_t)m_nNumItems)
 466             GetItem(nItem)->Toggle();
 467         //
 468         // else: it's not an error, just click outside of client zone
 469         //
 470     }
 471     else
 472     {
 473         //
 474         // Implement default behaviour: clicking on the item selects it
 475         //
 476         rEvent.Skip();
 477     }
 478 } // end of wxCheckListBox::OnLeftClick
 479
 480 #endif
 481