| 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 | #include "wx/mac/uma.h" |
| 18 | |
| 19 | #if !USE_SHARED_LIBRARY |
| 20 | IMPLEMENT_DYNAMIC_CLASS(wxRegion, wxGDIObject) |
| 21 | IMPLEMENT_DYNAMIC_CLASS(wxRegionIterator, wxObject) |
| 22 | #endif |
| 23 | |
| 24 | //----------------------------------------------------------------------------- |
| 25 | // wxRegionRefData implementation |
| 26 | //----------------------------------------------------------------------------- |
| 27 | |
| 28 | class WXDLLEXPORT wxRegionRefData : public wxGDIRefData { |
| 29 | public: |
| 30 | wxRegionRefData() |
| 31 | { |
| 32 | m_macRgn = NewRgn() ; |
| 33 | } |
| 34 | |
| 35 | wxRegionRefData(const wxRegionRefData& data) |
| 36 | : wxGDIRefData() |
| 37 | { |
| 38 | m_macRgn = NewRgn() ; |
| 39 | CopyRgn( data.m_macRgn , m_macRgn ) ; |
| 40 | } |
| 41 | |
| 42 | ~wxRegionRefData() |
| 43 | { |
| 44 | DisposeRgn( m_macRgn ) ; |
| 45 | } |
| 46 | RgnHandle m_macRgn ; |
| 47 | }; |
| 48 | |
| 49 | #define M_REGION (((wxRegionRefData*)m_refData)->m_macRgn) |
| 50 | #define OTHER_M_REGION(a) (((wxRegionRefData*)(a.m_refData))->m_macRgn) |
| 51 | |
| 52 | //----------------------------------------------------------------------------- |
| 53 | // wxRegion |
| 54 | //----------------------------------------------------------------------------- |
| 55 | |
| 56 | /*! |
| 57 | * Create an empty region. |
| 58 | */ |
| 59 | wxRegion::wxRegion() |
| 60 | { |
| 61 | m_refData = new wxRegionRefData; |
| 62 | } |
| 63 | |
| 64 | wxRegion::wxRegion(WXHRGN hRegion ) |
| 65 | { |
| 66 | m_refData = new wxRegionRefData; |
| 67 | CopyRgn( (RgnHandle) hRegion , (RgnHandle) M_REGION ) ; |
| 68 | } |
| 69 | |
| 70 | wxRegion::wxRegion(long x, long y, long w, long h) |
| 71 | { |
| 72 | m_refData = new wxRegionRefData; |
| 73 | SetRectRgn( (RgnHandle) M_REGION , x , y , x+w , y+h ) ; |
| 74 | } |
| 75 | |
| 76 | wxRegion::wxRegion(const wxPoint& topLeft, const wxPoint& bottomRight) |
| 77 | { |
| 78 | m_refData = new wxRegionRefData; |
| 79 | SetRectRgn( (RgnHandle) M_REGION , topLeft.x , topLeft.y , bottomRight.x , bottomRight.y ) ; |
| 80 | } |
| 81 | |
| 82 | wxRegion::wxRegion(const wxRect& rect) |
| 83 | { |
| 84 | m_refData = new wxRegionRefData; |
| 85 | SetRectRgn( (RgnHandle) M_REGION , rect.x , rect.y , rect.x+rect.width , rect.y+rect.height ) ; |
| 86 | } |
| 87 | |
| 88 | /*! |
| 89 | * Destroy the region. |
| 90 | */ |
| 91 | wxRegion::~wxRegion() |
| 92 | { |
| 93 | // m_refData unrefed in ~wxObject |
| 94 | } |
| 95 | |
| 96 | //----------------------------------------------------------------------------- |
| 97 | //# Modify region |
| 98 | //----------------------------------------------------------------------------- |
| 99 | |
| 100 | //! Clear current region |
| 101 | void wxRegion::Clear() |
| 102 | { |
| 103 | UnRef(); |
| 104 | } |
| 105 | |
| 106 | //! Combine rectangle (x, y, w, h) with this. |
| 107 | bool wxRegion::Combine(long x, long y, long width, long height, wxRegionOp op) |
| 108 | { |
| 109 | // Don't change shared data |
| 110 | if (!m_refData) |
| 111 | { |
| 112 | m_refData = new wxRegionRefData(); |
| 113 | } |
| 114 | else if (m_refData->GetRefCount() > 1) |
| 115 | { |
| 116 | wxRegionRefData* ref = (wxRegionRefData*)m_refData; |
| 117 | UnRef(); |
| 118 | m_refData = new wxRegionRefData(*ref); |
| 119 | } |
| 120 | RgnHandle rgn = NewRgn() ; |
| 121 | SetRectRgn( rgn , x , y, x+width,y + height ) ; |
| 122 | |
| 123 | switch (op) |
| 124 | { |
| 125 | case wxRGN_AND: |
| 126 | SectRgn( M_REGION , rgn , M_REGION ) ; |
| 127 | break ; |
| 128 | case wxRGN_OR: |
| 129 | UnionRgn( M_REGION , rgn , M_REGION ) ; |
| 130 | break ; |
| 131 | case wxRGN_XOR: |
| 132 | XorRgn( M_REGION , rgn , M_REGION ) ; |
| 133 | break ; |
| 134 | case wxRGN_DIFF: |
| 135 | DiffRgn( M_REGION , rgn , M_REGION ) ; |
| 136 | break ; |
| 137 | case wxRGN_COPY: |
| 138 | default: |
| 139 | CopyRgn( rgn ,M_REGION ) ; |
| 140 | break ; |
| 141 | } |
| 142 | |
| 143 | DisposeRgn( rgn ) ; |
| 144 | |
| 145 | return TRUE; |
| 146 | } |
| 147 | |
| 148 | //! Union /e region with this. |
| 149 | bool wxRegion::Combine(const wxRegion& region, wxRegionOp op) |
| 150 | { |
| 151 | if (region.Empty()) |
| 152 | return FALSE; |
| 153 | |
| 154 | // Don't change shared data |
| 155 | if (!m_refData) { |
| 156 | m_refData = new wxRegionRefData(); |
| 157 | } |
| 158 | else if (m_refData->GetRefCount() > 1) |
| 159 | { |
| 160 | wxRegionRefData* ref = (wxRegionRefData*)m_refData; |
| 161 | UnRef(); |
| 162 | m_refData = new wxRegionRefData(*ref); |
| 163 | } |
| 164 | |
| 165 | switch (op) |
| 166 | { |
| 167 | case wxRGN_AND: |
| 168 | SectRgn( M_REGION , OTHER_M_REGION(region) , M_REGION ) ; |
| 169 | break ; |
| 170 | case wxRGN_OR: |
| 171 | UnionRgn( M_REGION , OTHER_M_REGION(region) , M_REGION ) ; |
| 172 | break ; |
| 173 | case wxRGN_XOR: |
| 174 | XorRgn( M_REGION , OTHER_M_REGION(region) , M_REGION ) ; |
| 175 | break ; |
| 176 | case wxRGN_DIFF: |
| 177 | DiffRgn( M_REGION , OTHER_M_REGION(region) , M_REGION ) ; |
| 178 | break ; |
| 179 | case wxRGN_COPY: |
| 180 | default: |
| 181 | CopyRgn( OTHER_M_REGION(region) ,M_REGION ) ; |
| 182 | break ; |
| 183 | } |
| 184 | |
| 185 | return TRUE; |
| 186 | } |
| 187 | |
| 188 | bool wxRegion::Combine(const wxRect& rect, wxRegionOp op) |
| 189 | { |
| 190 | return Combine(rect.GetLeft(), rect.GetTop(), rect.GetWidth(), rect.GetHeight(), op); |
| 191 | } |
| 192 | |
| 193 | //----------------------------------------------------------------------------- |
| 194 | //# Information on region |
| 195 | //----------------------------------------------------------------------------- |
| 196 | |
| 197 | // Outer bounds of region |
| 198 | void wxRegion::GetBox(wxCoord& x, wxCoord& y, wxCoord& w, wxCoord& h) const |
| 199 | { |
| 200 | if (m_refData) |
| 201 | { |
| 202 | Rect box ; |
| 203 | GetRegionBounds( M_REGION , &box ) ; |
| 204 | x = box.left ; |
| 205 | y = box.top ; |
| 206 | w = box.right - box.left ; |
| 207 | h = box.bottom - box.top ; |
| 208 | } |
| 209 | else |
| 210 | { |
| 211 | x = y = w = h = 0; |
| 212 | } |
| 213 | } |
| 214 | |
| 215 | wxRect wxRegion::GetBox() const |
| 216 | { |
| 217 | wxCoord x, y, w, h; |
| 218 | GetBox(x, y, w, h); |
| 219 | return wxRect(x, y, w, h); |
| 220 | } |
| 221 | |
| 222 | // Is region empty? |
| 223 | bool wxRegion::Empty() const |
| 224 | { |
| 225 | return EmptyRgn( M_REGION ) ; |
| 226 | } |
| 227 | |
| 228 | const WXHRGN wxRegion::GetWXHRGN() const |
| 229 | { |
| 230 | return M_REGION ; |
| 231 | } |
| 232 | |
| 233 | //----------------------------------------------------------------------------- |
| 234 | //# Tests |
| 235 | //----------------------------------------------------------------------------- |
| 236 | |
| 237 | // Does the region contain the point (x,y)? |
| 238 | wxRegionContain wxRegion::Contains(long x, long y) const |
| 239 | { |
| 240 | if (!m_refData) |
| 241 | return wxOutRegion; |
| 242 | |
| 243 | // TODO. Return wxInRegion if within region. |
| 244 | if (0) |
| 245 | return wxInRegion; |
| 246 | return wxOutRegion; |
| 247 | } |
| 248 | |
| 249 | // Does the region contain the point pt? |
| 250 | wxRegionContain wxRegion::Contains(const wxPoint& pt) const |
| 251 | { |
| 252 | if (!m_refData) |
| 253 | return wxOutRegion; |
| 254 | |
| 255 | Point p = { pt.y , pt.x } ; |
| 256 | if (PtInRgn( p , M_REGION ) ) |
| 257 | return wxInRegion; |
| 258 | |
| 259 | return wxOutRegion; |
| 260 | } |
| 261 | |
| 262 | // Does the region contain the rectangle (x, y, w, h)? |
| 263 | wxRegionContain wxRegion::Contains(long x, long y, long w, long h) const |
| 264 | { |
| 265 | if (!m_refData) |
| 266 | return wxOutRegion; |
| 267 | |
| 268 | Rect rect = { y , x , y + h , x + w } ; |
| 269 | if (RectInRgn( &rect , M_REGION ) ) |
| 270 | return wxInRegion; |
| 271 | else |
| 272 | return wxOutRegion; |
| 273 | } |
| 274 | |
| 275 | // Does the region contain the rectangle rect |
| 276 | wxRegionContain wxRegion::Contains(const wxRect& rect) const |
| 277 | { |
| 278 | if (!m_refData) |
| 279 | return wxOutRegion; |
| 280 | |
| 281 | long x, y, w, h; |
| 282 | x = rect.x; |
| 283 | y = rect.y; |
| 284 | w = rect.GetWidth(); |
| 285 | h = rect.GetHeight(); |
| 286 | return Contains(x, y, w, h); |
| 287 | } |
| 288 | |
| 289 | /////////////////////////////////////////////////////////////////////////////// |
| 290 | // // |
| 291 | // wxRegionIterator // |
| 292 | // // |
| 293 | /////////////////////////////////////////////////////////////////////////////// |
| 294 | |
| 295 | /*! |
| 296 | * Initialize empty iterator |
| 297 | */ |
| 298 | wxRegionIterator::wxRegionIterator() |
| 299 | : m_current(0), m_numRects(0), m_rects(NULL) |
| 300 | { |
| 301 | } |
| 302 | |
| 303 | wxRegionIterator::~wxRegionIterator() |
| 304 | { |
| 305 | if (m_rects) { |
| 306 | delete[] m_rects; |
| 307 | m_rects = NULL; |
| 308 | } |
| 309 | } |
| 310 | |
| 311 | wxRegionIterator::wxRegionIterator(const wxRegionIterator& iterator) |
| 312 | : wxObject() |
| 313 | , m_current(iterator.m_current) |
| 314 | , m_numRects(0) |
| 315 | , m_rects(NULL) |
| 316 | { |
| 317 | SetRects(iterator.m_numRects, iterator.m_rects); |
| 318 | } |
| 319 | |
| 320 | wxRegionIterator& wxRegionIterator::operator=(const wxRegionIterator& iterator) |
| 321 | { |
| 322 | m_current = iterator.m_current; |
| 323 | SetRects(iterator.m_numRects, iterator.m_rects); |
| 324 | return *this; |
| 325 | } |
| 326 | |
| 327 | /*! |
| 328 | * Set iterator rects for region |
| 329 | */ |
| 330 | void wxRegionIterator::SetRects(long numRects, wxRect *rects) |
| 331 | { |
| 332 | if (m_rects) { |
| 333 | delete[] m_rects; |
| 334 | m_rects = NULL; |
| 335 | } |
| 336 | if (rects) |
| 337 | { |
| 338 | int i; |
| 339 | m_rects = new wxRect[numRects]; |
| 340 | for (i = 0; i < numRects; i++) |
| 341 | m_rects[i] = rects[i]; |
| 342 | } |
| 343 | m_numRects = numRects; |
| 344 | } |
| 345 | |
| 346 | /*! |
| 347 | * Initialize iterator for region |
| 348 | */ |
| 349 | wxRegionIterator::wxRegionIterator(const wxRegion& region) |
| 350 | { |
| 351 | m_rects = NULL; |
| 352 | |
| 353 | Reset(region); |
| 354 | } |
| 355 | |
| 356 | /*! |
| 357 | * Reset iterator for a new /e region. |
| 358 | */ |
| 359 | void wxRegionIterator::Reset(const wxRegion& region) |
| 360 | { |
| 361 | m_current = 0; |
| 362 | m_region = region; |
| 363 | |
| 364 | if (m_rects) { |
| 365 | delete[] m_rects; |
| 366 | m_rects = NULL; |
| 367 | } |
| 368 | |
| 369 | if (m_region.Empty()) |
| 370 | m_numRects = 0; |
| 371 | else |
| 372 | { |
| 373 | // we cannot dissolve it into rects on mac |
| 374 | m_rects = new wxRect[1]; |
| 375 | Rect rect ; |
| 376 | GetRegionBounds( OTHER_M_REGION( region ) , &rect ) ; |
| 377 | m_rects[0].x = rect.left; |
| 378 | m_rects[0].y = rect.top; |
| 379 | m_rects[0].width = rect.right - rect.left; |
| 380 | m_rects[0].height = rect.bottom - rect.top; |
| 381 | m_numRects = 1; |
| 382 | } |
| 383 | } |
| 384 | |
| 385 | /*! |
| 386 | * Increment iterator. The rectangle returned is the one after the |
| 387 | * incrementation. |
| 388 | */ |
| 389 | wxRegionIterator& wxRegionIterator::operator ++ () |
| 390 | { |
| 391 | if (m_current < m_numRects) |
| 392 | ++m_current; |
| 393 | return *this; |
| 394 | } |
| 395 | |
| 396 | /*! |
| 397 | * Increment iterator. The rectangle returned is the one before the |
| 398 | * incrementation. |
| 399 | */ |
| 400 | wxRegionIterator wxRegionIterator::operator ++ (int) |
| 401 | { |
| 402 | wxRegionIterator previous(*this); |
| 403 | |
| 404 | if (m_current < m_numRects) |
| 405 | ++m_current; |
| 406 | |
| 407 | return previous; |
| 408 | } |
| 409 | |
| 410 | long wxRegionIterator::GetX() const |
| 411 | { |
| 412 | if (m_current < m_numRects) |
| 413 | return m_rects[m_current].x; |
| 414 | return 0; |
| 415 | } |
| 416 | |
| 417 | long wxRegionIterator::GetY() const |
| 418 | { |
| 419 | if (m_current < m_numRects) |
| 420 | return m_rects[m_current].y; |
| 421 | return 0; |
| 422 | } |
| 423 | |
| 424 | long wxRegionIterator::GetW() const |
| 425 | { |
| 426 | if (m_current < m_numRects) |
| 427 | return m_rects[m_current].width ; |
| 428 | return 0; |
| 429 | } |
| 430 | |
| 431 | long wxRegionIterator::GetH() const |
| 432 | { |
| 433 | if (m_current < m_numRects) |
| 434 | return m_rects[m_current].height; |
| 435 | return 0; |
| 436 | } |
| 437 | |