src/os2/region.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // File:      region.cpp
   3 // Purpose:   Region class
   4 // Author:    Markus Holzem/Julian Smart/AUTHOR
   5 // Created:   Fri Oct 24 10:46:34 MET 1997
   6 // RCS-ID:        $Id$
   7 // Copyright: (c) 1997 Markus Holzem/Julian Smart/AUTHOR
   8 // Licence:   wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 #ifdef __GNUG__
  12 #pragma implementation "region.h"
  13 #endif
  14
  15 #include "wx/region.h"
  16 #include "wx/gdicmn.h"
  17
  18 #if !USE_SHARED_LIBRARY
  19         IMPLEMENT_DYNAMIC_CLASS(wxRegion, wxGDIObject)
  20         IMPLEMENT_DYNAMIC_CLASS(wxRegionIterator, wxObject)
  21 #endif
  22
  23 //-----------------------------------------------------------------------------
  24 // wxRegionRefData implementation
  25 //-----------------------------------------------------------------------------
  26
  27 class WXDLLEXPORT wxRegionRefData : public wxGDIRefData {
  28 public:
  29         wxRegionRefData()
  30         {
  31         }
  32
  33         wxRegionRefData(const wxRegionRefData& data)
  34         {
  35         // TODO
  36         }
  37
  38         ~wxRegionRefData()
  39         {
  40         // TODO
  41         }
  42 };
  43
  44
  45 //-----------------------------------------------------------------------------
  46 // wxRegion
  47 //-----------------------------------------------------------------------------
  48
  49 /*!
  50  * Create an empty region.
  51  */
  52 wxRegion::wxRegion()
  53 {
  54     m_refData = new wxRegionRefData;
  55     // TODO create empty region
  56 }
  57
  58 wxRegion::wxRegion(long x, long y, long w, long h)
  59 {
  60     m_refData = new wxRegionRefData;
  61     // TODO create rect region
  62 }
  63
  64 wxRegion::wxRegion(const wxPoint& topLeft, const wxPoint& bottomRight)
  65 {
  66     m_refData = new wxRegionRefData;
  67     // TODO create rect region
  68 }
  69
  70 wxRegion::wxRegion(const wxRect& rect)
  71 {
  72     m_refData = new wxRegionRefData;
  73     // TODO create rect region
  74 }
  75
  76 /*!
  77  * Destroy the region.
  78  */
  79 wxRegion::~wxRegion()
  80 {
  81     // m_refData unrefed in ~wxObject
  82 }
  83
  84 //-----------------------------------------------------------------------------
  85 //# Modify region
  86 //-----------------------------------------------------------------------------
  87
  88 //! Clear current region
  89 void wxRegion::Clear()
  90 {
  91     UnRef();
  92 }
  93
  94 //! Combine rectangle (x, y, w, h) with this.
  95 bool wxRegion::Combine(long x, long y, long width, long height, wxRegionOp op)
  96 {
  97         // Don't change shared data
  98         if (!m_refData) {
  99                 m_refData = new wxRegionRefData();
 100         } else if (m_refData->GetRefCount() > 1) {
 101                 wxRegionRefData* ref = (wxRegionRefData*)m_refData;
 102                 UnRef();
 103                 m_refData = new wxRegionRefData(*ref);
 104         }
 105     // If ref count is 1, that means it's 'ours' anyway so no action.
 106
 107     // TODO create rect region
 108
 109     int mode = 0; // TODO platform-specific code
 110     switch (op)
 111     {
 112         case wxRGN_AND:
 113             // TODO
 114             break ;
 115         case wxRGN_OR:
 116             // TODO
 117             break ;
 118         case wxRGN_XOR:
 119             // TODO
 120             break ;
 121         case wxRGN_DIFF:
 122             // TODO
 123             break ;
 124         case wxRGN_COPY:
 125         default:
 126             // TODO
 127             break ;
 128     }
 129
 130     // TODO do combine region
 131
 132     return FALSE;
 133 }
 134
 135 //! Union /e region with this.
 136 bool wxRegion::Combine(const wxRegion& region, wxRegionOp op)
 137 {
 138         if (region.Empty())
 139                 return FALSE;
 140
 141         // Don't change shared data
 142         if (!m_refData) {
 143                 m_refData = new wxRegionRefData();
 144         } else  if (m_refData->GetRefCount() > 1) {
 145                 wxRegionRefData* ref = (wxRegionRefData*)m_refData;
 146                 UnRef();
 147                 m_refData = new wxRegionRefData(*ref);
 148         }
 149
 150     int mode = 0; // TODO platform-specific code
 151     switch (op)
 152     {
 153         case wxRGN_AND:
 154             // TODO
 155             break ;
 156         case wxRGN_OR:
 157             // TODO
 158             break ;
 159         case wxRGN_XOR:
 160             // TODO
 161             break ;
 162         case wxRGN_DIFF:
 163             // TODO
 164             break ;
 165         case wxRGN_COPY:
 166         default:
 167             // TODO
 168             break ;
 169     }
 170
 171     // TODO combine region
 172
 173         return FALSE;
 174 }
 175
 176 bool wxRegion::Combine(const wxRect& rect, wxRegionOp op)
 177 {
 178     return Combine(rect.GetLeft(), rect.GetTop(), rect.GetWidth(), rect.GetHeight(), op);
 179 }
 180
 181 //-----------------------------------------------------------------------------
 182 //# Information on region
 183 //-----------------------------------------------------------------------------
 184
 185 // Outer bounds of region
 186 void wxRegion::GetBox(long& x, long& y, long&w, long &h) const
 187 {
 188         if (m_refData) {
 189         // TODO get box
 190         } else {
 191                 x = y = w = h = 0;
 192         }
 193 }
 194
 195 wxRect wxRegion::GetBox() const
 196 {
 197     long x, y, w, h;
 198     GetBox(x, y, w, h);
 199     return wxRect(x, y, w, h);
 200 }
 201
 202 // Is region empty?
 203 bool wxRegion::Empty() const
 204 {
 205     // TODO
 206     return FALSE;
 207 }
 208
 209 //-----------------------------------------------------------------------------
 210 //# Tests
 211 //-----------------------------------------------------------------------------
 212
 213 // Does the region contain the point (x,y)?
 214 wxRegionContain wxRegion::Contains(long x, long y) const
 215 {
 216         if (!m_refData)
 217                 return wxOutRegion;
 218
 219     // TODO. Return wxInRegion if within region.
 220     if (0)
 221         return wxInRegion;
 222     return wxOutRegion;
 223 }
 224
 225 // Does the region contain the point pt?
 226 wxRegionContain wxRegion::Contains(const wxPoint& pt) const
 227 {
 228         if (!m_refData)
 229                 return wxOutRegion;
 230
 231     // TODO. Return wxInRegion if within region.
 232     if (0)
 233         return wxInRegion;
 234     else
 235         return wxOutRegion;
 236 }
 237
 238 // Does the region contain the rectangle (x, y, w, h)?
 239 wxRegionContain wxRegion::Contains(long x, long y, long w, long h) const
 240 {
 241         if (!m_refData)
 242                 return wxOutRegion;
 243
 244     // TODO. Return wxInRegion if within region.
 245     if (0)
 246         return wxInRegion;
 247     else
 248         return wxOutRegion;
 249 }
 250
 251 // Does the region contain the rectangle rect
 252 wxRegionContain wxRegion::Contains(const wxRect& rect) const
 253 {
 254         if (!m_refData)
 255                 return wxOutRegion;
 256
 257     long x, y, w, h;
 258     x = rect.x;
 259     y = rect.y;
 260     w = rect.GetWidth();
 261     h = rect.GetHeight();
 262     return Contains(x, y, w, h);
 263 }
 264
 265 ///////////////////////////////////////////////////////////////////////////////
 266 //                                                                                                                                                       //
 267 //                                                         wxRegionIterator                                                              //
 268 //                                                                                                                                                       //
 269 ///////////////////////////////////////////////////////////////////////////////
 270
 271 /*!
 272  * Initialize empty iterator
 273  */
 274 wxRegionIterator::wxRegionIterator() : m_current(0), m_numRects(0), m_rects(NULL)
 275 {
 276 }
 277
 278 wxRegionIterator::~wxRegionIterator()
 279 {
 280     if (m_rects)
 281         delete[] m_rects;
 282 }
 283
 284 /*!
 285  * Initialize iterator for region
 286  */
 287 wxRegionIterator::wxRegionIterator(const wxRegion& region)
 288 {
 289     m_rects = NULL;
 290
 291         Reset(region);
 292 }
 293
 294 /*!
 295  * Reset iterator for a new /e region.
 296  */
 297 void wxRegionIterator::Reset(const wxRegion& region)
 298 {
 299         m_current = 0;
 300         m_region = region;
 301
 302     if (m_rects)
 303         delete[] m_rects;
 304
 305     m_rects = NULL;
 306
 307         if (m_region.Empty())
 308                 m_numRects = 0;
 309         else
 310     {
 311         // TODO create m_rects and fill with rectangles for this region
 312         m_numRects = 0;
 313     }
 314 }
 315
 316 /*!
 317  * Increment iterator. The rectangle returned is the one after the
 318  * incrementation.
 319  */
 320 void wxRegionIterator::operator ++ ()
 321 {
 322         if (m_current < m_numRects)
 323                 ++m_current;
 324 }
 325
 326 /*!
 327  * Increment iterator. The rectangle returned is the one before the
 328  * incrementation.
 329  */
 330 void wxRegionIterator::operator ++ (int)
 331 {
 332         if (m_current < m_numRects)
 333                 ++m_current;
 334 }
 335
 336 long wxRegionIterator::GetX() const
 337 {
 338         if (m_current < m_numRects)
 339                 return m_rects[m_current].x;
 340         return 0;
 341 }
 342
 343 long wxRegionIterator::GetY() const
 344 {
 345         if (m_current < m_numRects)
 346                 return m_rects[m_current].y;
 347         return 0;
 348 }
 349
 350 long wxRegionIterator::GetW() const
 351 {
 352         if (m_current < m_numRects)
 353                 return m_rects[m_current].width ;
 354         return 0;
 355 }
 356
 357 long wxRegionIterator::GetH() const
 358 {
 359         if (m_current < m_numRects)
 360                 return m_rects[m_current].height;
 361         return 0;
 362 }
 363