| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // File: region.cpp |
| 3 | // Purpose: Region class |
| 4 | // Author: Markus Holzem/Julian Smart |
| 5 | // Created: Fri Oct 24 10:46:34 MET 1997 |
| 6 | // RCS-ID: $Id$ |
| 7 | // Copyright: (c) 1997 Markus Holzem/Julian Smart |
| 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 | #ifdef __VMS__ |
| 19 | #pragma message disable nosimpint |
| 20 | #endif |
| 21 | #include <Xm/Xm.h> |
| 22 | #ifdef __VMS__ |
| 23 | #pragma message enable nosimpint |
| 24 | #endif |
| 25 | // #include "wx/motif/private.h" |
| 26 | |
| 27 | IMPLEMENT_DYNAMIC_CLASS(wxRegion, wxGDIObject) |
| 28 | IMPLEMENT_DYNAMIC_CLASS(wxRegionIterator, wxObject) |
| 29 | |
| 30 | // ---------------------------------------------------------------------------- |
| 31 | // list types |
| 32 | // ---------------------------------------------------------------------------- |
| 33 | |
| 34 | #include "wx/listimpl.cpp" |
| 35 | |
| 36 | WX_DEFINE_LIST(wxRectList); |
| 37 | |
| 38 | //----------------------------------------------------------------------------- |
| 39 | // wxRegionRefData implementation |
| 40 | //----------------------------------------------------------------------------- |
| 41 | |
| 42 | class WXDLLEXPORT wxRegionRefData : public wxGDIRefData { |
| 43 | public: |
| 44 | wxRegionRefData() |
| 45 | { |
| 46 | m_region = XCreateRegion(); |
| 47 | m_usingRects = FALSE; |
| 48 | m_rects = (wxRect*) NULL; |
| 49 | m_rectCount = 0; |
| 50 | } |
| 51 | |
| 52 | wxRegionRefData(const wxRegionRefData& data) |
| 53 | { |
| 54 | m_region = XCreateRegion(); |
| 55 | m_rects = (wxRect*) NULL; |
| 56 | m_rectCount = 0; |
| 57 | XUnionRegion(m_region, data.m_region, m_region); |
| 58 | |
| 59 | SetRects(data.m_rectCount, data.m_rects); |
| 60 | } |
| 61 | |
| 62 | ~wxRegionRefData() |
| 63 | { |
| 64 | XDestroyRegion(m_region); |
| 65 | DeleteRects(); |
| 66 | } |
| 67 | |
| 68 | wxRect* GetRects() { return m_rects; }; |
| 69 | void SetRects(const wxRectList& rectList); |
| 70 | void SetRects(int count, const wxRect* rects); |
| 71 | bool UsingRects() const { return m_usingRects; } |
| 72 | int GetRectCount() const { return m_rectCount; } |
| 73 | |
| 74 | void DeleteRects(); |
| 75 | |
| 76 | Region m_region; |
| 77 | wxRect* m_rects; |
| 78 | int m_rectCount; |
| 79 | bool m_usingRects; // TRUE if we're using the above. |
| 80 | }; |
| 81 | |
| 82 | void wxRegionRefData::SetRects(const wxRectList& rectList) |
| 83 | { |
| 84 | DeleteRects(); |
| 85 | m_usingRects = (rectList.Number() > 0); |
| 86 | if (m_usingRects) |
| 87 | { |
| 88 | m_rectCount = rectList.Number(); |
| 89 | m_rects = new wxRect[m_rectCount]; |
| 90 | } |
| 91 | |
| 92 | wxRectList::Node* node = rectList.GetFirst(); |
| 93 | int i = 0; |
| 94 | while (node) { |
| 95 | wxRect* rect = node->GetData(); |
| 96 | m_rects[i] = * rect; |
| 97 | node = node->GetNext(); |
| 98 | i ++; |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | void wxRegionRefData::SetRects(int count, const wxRect* rects) |
| 103 | { |
| 104 | DeleteRects(); |
| 105 | m_usingRects = (count > 0); |
| 106 | if (m_usingRects) |
| 107 | { |
| 108 | m_rectCount = count; |
| 109 | m_rects = new wxRect[m_rectCount]; |
| 110 | int i; |
| 111 | for (i = 0; i < m_rectCount; i++) |
| 112 | m_rects[i] = rects[i]; |
| 113 | } |
| 114 | } |
| 115 | |
| 116 | void wxRegionRefData::DeleteRects() |
| 117 | { |
| 118 | if (m_rects) |
| 119 | { |
| 120 | delete[] m_rects; |
| 121 | m_rects = (wxRect*) NULL; |
| 122 | } |
| 123 | m_rectCount = 0; |
| 124 | m_usingRects = FALSE; |
| 125 | } |
| 126 | |
| 127 | #define M_REGION (((wxRegionRefData*)m_refData)->m_region) |
| 128 | |
| 129 | //----------------------------------------------------------------------------- |
| 130 | // wxRegion |
| 131 | //----------------------------------------------------------------------------- |
| 132 | |
| 133 | /*! |
| 134 | * Create an empty region. |
| 135 | */ |
| 136 | wxRegion::wxRegion() |
| 137 | { |
| 138 | } |
| 139 | |
| 140 | wxRegion::wxRegion(wxCoord x, wxCoord y, wxCoord w, wxCoord h) |
| 141 | { |
| 142 | m_refData = new wxRegionRefData; |
| 143 | |
| 144 | XRectangle rect; |
| 145 | rect.x = x; |
| 146 | rect.y = y; |
| 147 | rect.width = w; |
| 148 | rect.height = h; |
| 149 | XUnionRectWithRegion(&rect, M_REGION, M_REGION); |
| 150 | } |
| 151 | |
| 152 | wxRegion::wxRegion(const wxPoint& topLeft, const wxPoint& bottomRight) |
| 153 | { |
| 154 | m_refData = new wxRegionRefData; |
| 155 | |
| 156 | XRectangle rect; |
| 157 | rect.x = topLeft.x; |
| 158 | rect.y = topLeft.y; |
| 159 | rect.width = bottomRight.x - topLeft.x; |
| 160 | rect.height = bottomRight.y - topLeft.y; |
| 161 | XUnionRectWithRegion(&rect, M_REGION, M_REGION); |
| 162 | } |
| 163 | |
| 164 | wxRegion::wxRegion(const wxRect& rect) |
| 165 | { |
| 166 | m_refData = new wxRegionRefData; |
| 167 | |
| 168 | XRectangle rect1; |
| 169 | rect1.x = rect.x; |
| 170 | rect1.y = rect.y; |
| 171 | rect1.width = rect.width; |
| 172 | rect1.height = rect.height; |
| 173 | XUnionRectWithRegion(&rect1, M_REGION, M_REGION); |
| 174 | } |
| 175 | |
| 176 | /*! |
| 177 | * Destroy the region. |
| 178 | */ |
| 179 | wxRegion::~wxRegion() |
| 180 | { |
| 181 | // m_refData unrefed in ~wxObject |
| 182 | } |
| 183 | |
| 184 | // Get the internal region handle |
| 185 | WXRegion wxRegion::GetXRegion() const |
| 186 | { |
| 187 | wxASSERT( m_refData !=NULL ); |
| 188 | |
| 189 | return (WXRegion) ((wxRegionRefData*)m_refData)->m_region; |
| 190 | } |
| 191 | |
| 192 | //----------------------------------------------------------------------------- |
| 193 | //# Modify region |
| 194 | //----------------------------------------------------------------------------- |
| 195 | |
| 196 | //! Clear current region |
| 197 | void wxRegion::Clear() |
| 198 | { |
| 199 | UnRef(); |
| 200 | } |
| 201 | |
| 202 | //! Combine rectangle (x, y, w, h) with this. |
| 203 | bool wxRegion::Combine(wxCoord x, wxCoord y, wxCoord width, wxCoord height, wxRegionOp op) |
| 204 | { |
| 205 | // Don't change shared data |
| 206 | if (!m_refData) { |
| 207 | m_refData = new wxRegionRefData(); |
| 208 | } else if (m_refData->GetRefCount() > 1) { |
| 209 | wxRegionRefData* ref = (wxRegionRefData*)m_refData; |
| 210 | UnRef(); |
| 211 | m_refData = new wxRegionRefData(*ref); |
| 212 | } |
| 213 | // If ref count is 1, that means it's 'ours' anyway so no action. |
| 214 | |
| 215 | Region rectRegion = XCreateRegion(); |
| 216 | |
| 217 | XRectangle rect; |
| 218 | rect.x = x; |
| 219 | rect.y = y; |
| 220 | rect.width = width; |
| 221 | rect.height = height; |
| 222 | XUnionRectWithRegion(&rect, rectRegion, rectRegion); |
| 223 | |
| 224 | switch (op) |
| 225 | { |
| 226 | case wxRGN_AND: |
| 227 | XIntersectRegion(M_REGION, rectRegion, M_REGION); |
| 228 | break ; |
| 229 | case wxRGN_OR: |
| 230 | XUnionRegion(M_REGION, rectRegion, M_REGION); |
| 231 | break ; |
| 232 | case wxRGN_XOR: |
| 233 | // TODO |
| 234 | break ; |
| 235 | case wxRGN_DIFF: |
| 236 | // TODO |
| 237 | break ; |
| 238 | case wxRGN_COPY: // Don't have to do this one |
| 239 | default: |
| 240 | // TODO |
| 241 | break ; |
| 242 | } |
| 243 | |
| 244 | return FALSE; |
| 245 | } |
| 246 | |
| 247 | //! Union /e region with this. |
| 248 | bool wxRegion::Combine(const wxRegion& region, wxRegionOp op) |
| 249 | { |
| 250 | if (region.Empty()) |
| 251 | return FALSE; |
| 252 | |
| 253 | // Don't change shared data |
| 254 | if (!m_refData) { |
| 255 | m_refData = new wxRegionRefData(); |
| 256 | } else if (m_refData->GetRefCount() > 1) { |
| 257 | wxRegionRefData* ref = (wxRegionRefData*)m_refData; |
| 258 | UnRef(); |
| 259 | m_refData = new wxRegionRefData(*ref); |
| 260 | } |
| 261 | |
| 262 | switch (op) |
| 263 | { |
| 264 | case wxRGN_AND: |
| 265 | XIntersectRegion(M_REGION, ((wxRegionRefData*)region.m_refData)->m_region, |
| 266 | M_REGION); |
| 267 | break ; |
| 268 | case wxRGN_OR: |
| 269 | XUnionRegion(M_REGION, ((wxRegionRefData*)region.m_refData)->m_region, |
| 270 | M_REGION); |
| 271 | break ; |
| 272 | case wxRGN_XOR: |
| 273 | // TODO |
| 274 | break ; |
| 275 | case wxRGN_DIFF: |
| 276 | // TODO |
| 277 | break ; |
| 278 | case wxRGN_COPY: // Don't have to do this one |
| 279 | default: |
| 280 | // TODO |
| 281 | break ; |
| 282 | } |
| 283 | |
| 284 | return FALSE; |
| 285 | } |
| 286 | |
| 287 | bool wxRegion::Combine(const wxRect& rect, wxRegionOp op) |
| 288 | { |
| 289 | return Combine(rect.GetLeft(), rect.GetTop(), rect.GetWidth(), rect.GetHeight(), op); |
| 290 | } |
| 291 | |
| 292 | //----------------------------------------------------------------------------- |
| 293 | //# Information on region |
| 294 | //----------------------------------------------------------------------------- |
| 295 | |
| 296 | // Outer bounds of region |
| 297 | void wxRegion::GetBox(wxCoord& x, wxCoord& y, wxCoord&w, wxCoord &h) const |
| 298 | { |
| 299 | if (m_refData) { |
| 300 | XRectangle rect; |
| 301 | XClipBox(M_REGION, &rect); |
| 302 | x = rect.x; |
| 303 | y = rect.y; |
| 304 | w = rect.width; |
| 305 | h = rect.height; |
| 306 | } else { |
| 307 | x = y = w = h = 0; |
| 308 | } |
| 309 | } |
| 310 | |
| 311 | wxRect wxRegion::GetBox() const |
| 312 | { |
| 313 | wxCoord x, y, w, h; |
| 314 | GetBox(x, y, w, h); |
| 315 | return wxRect(x, y, w, h); |
| 316 | } |
| 317 | |
| 318 | // Is region empty? |
| 319 | bool wxRegion::Empty() const |
| 320 | { |
| 321 | return m_refData ? XEmptyRegion(M_REGION) : TRUE; |
| 322 | } |
| 323 | |
| 324 | //----------------------------------------------------------------------------- |
| 325 | //# Tests |
| 326 | //----------------------------------------------------------------------------- |
| 327 | |
| 328 | // Does the region contain the point (x,y)? |
| 329 | wxRegionContain wxRegion::Contains(wxCoord WXUNUSED(x), wxCoord WXUNUSED(y)) const |
| 330 | { |
| 331 | if (!m_refData) |
| 332 | return wxOutRegion; |
| 333 | |
| 334 | // TODO. Return wxInRegion if within region. |
| 335 | if (0) |
| 336 | return wxInRegion; |
| 337 | return wxOutRegion; |
| 338 | } |
| 339 | |
| 340 | // Does the region contain the point pt? |
| 341 | wxRegionContain wxRegion::Contains(const wxPoint& pt) const |
| 342 | { |
| 343 | if (!m_refData) |
| 344 | return wxOutRegion; |
| 345 | |
| 346 | return XPointInRegion(M_REGION, pt.x, pt.y) ? wxInRegion : wxOutRegion; |
| 347 | } |
| 348 | |
| 349 | // Does the region contain the rectangle (x, y, w, h)? |
| 350 | wxRegionContain wxRegion::Contains(wxCoord x, wxCoord y, wxCoord w, wxCoord h) const |
| 351 | { |
| 352 | if (!m_refData) |
| 353 | return wxOutRegion; |
| 354 | |
| 355 | switch (XRectInRegion(M_REGION, x, y, w, h)) { |
| 356 | case RectangleIn: return wxInRegion; |
| 357 | case RectanglePart: return wxPartRegion; |
| 358 | } |
| 359 | return wxOutRegion; |
| 360 | } |
| 361 | |
| 362 | // Does the region contain the rectangle rect |
| 363 | wxRegionContain wxRegion::Contains(const wxRect& rect) const |
| 364 | { |
| 365 | if (!m_refData) |
| 366 | return wxOutRegion; |
| 367 | |
| 368 | wxCoord x, y, w, h; |
| 369 | x = rect.x; |
| 370 | y = rect.y; |
| 371 | w = rect.GetWidth(); |
| 372 | h = rect.GetHeight(); |
| 373 | return Contains(x, y, w, h); |
| 374 | } |
| 375 | |
| 376 | bool wxRegion::UsingRects() const |
| 377 | { |
| 378 | return ((wxRegionRefData*)m_refData)->UsingRects(); |
| 379 | } |
| 380 | |
| 381 | /* |
| 382 | wxRectList& wxRegion::GetRectList() |
| 383 | { |
| 384 | return ((wxRegionRefData*)m_refData)->GetRectList(); |
| 385 | } |
| 386 | */ |
| 387 | |
| 388 | wxRect* wxRegion::GetRects() |
| 389 | { |
| 390 | return ((wxRegionRefData*)m_refData)->GetRects(); |
| 391 | } |
| 392 | |
| 393 | int wxRegion::GetRectCount() const |
| 394 | { |
| 395 | return ((wxRegionRefData*)m_refData)->GetRectCount(); |
| 396 | } |
| 397 | |
| 398 | void wxRegion::SetRects(const wxRectList& rectList) |
| 399 | { |
| 400 | ((wxRegionRefData*)m_refData)->SetRects(rectList); |
| 401 | } |
| 402 | |
| 403 | void wxRegion::SetRects(int count, const wxRect* rects) |
| 404 | { |
| 405 | ((wxRegionRefData*)m_refData)->SetRects(count, rects); |
| 406 | } |
| 407 | |
| 408 | /////////////////////////////////////////////////////////////////////////////// |
| 409 | // // |
| 410 | // wxRegionIterator // |
| 411 | // // |
| 412 | /////////////////////////////////////////////////////////////////////////////// |
| 413 | |
| 414 | /*! |
| 415 | * Initialize empty iterator |
| 416 | */ |
| 417 | wxRegionIterator::wxRegionIterator() : m_current(0), m_numRects(0), m_rects(NULL) |
| 418 | { |
| 419 | } |
| 420 | |
| 421 | wxRegionIterator::~wxRegionIterator() |
| 422 | { |
| 423 | if (m_rects) |
| 424 | delete[] m_rects; |
| 425 | } |
| 426 | |
| 427 | /*! |
| 428 | * Initialize iterator for region |
| 429 | */ |
| 430 | wxRegionIterator::wxRegionIterator(const wxRegion& region) |
| 431 | { |
| 432 | m_rects = NULL; |
| 433 | |
| 434 | Reset(region); |
| 435 | } |
| 436 | |
| 437 | /*! |
| 438 | * Reset iterator for a new /e region. |
| 439 | */ |
| 440 | void wxRegionIterator::Reset(const wxRegion& region) |
| 441 | { |
| 442 | m_current = 0; |
| 443 | m_region = region; |
| 444 | |
| 445 | if (m_rects) |
| 446 | delete[] m_rects; |
| 447 | |
| 448 | m_rects = NULL; |
| 449 | |
| 450 | if (m_region.Empty()) |
| 451 | m_numRects = 0; |
| 452 | else |
| 453 | { |
| 454 | // Create m_rects and fill with rectangles for this region. |
| 455 | // Since we can't find the rectangles in a region, we cheat |
| 456 | // by retrieving the rectangles explicitly set in wxPaintDC::wxPaintDC |
| 457 | // (dcclient.cpp). |
| 458 | if (m_region.UsingRects()) |
| 459 | { |
| 460 | wxRect* rects = m_region.GetRects(); |
| 461 | int count = m_region.GetRectCount(); |
| 462 | m_numRects = count; |
| 463 | m_rects = new wxRect[m_numRects]; |
| 464 | |
| 465 | for (size_t i = 0; i < m_numRects; i++) |
| 466 | m_rects[i] = rects[i]; |
| 467 | |
| 468 | /* |
| 469 | int i = 0; |
| 470 | wxRectList::Node* node = rectList.GetFirst(); |
| 471 | while (node) { |
| 472 | wxRect* rect = node->GetData(); |
| 473 | m_rects[i] = * rect; |
| 474 | node = node->GetNext(); |
| 475 | i ++; |
| 476 | } |
| 477 | */ |
| 478 | } |
| 479 | else |
| 480 | { |
| 481 | // For now, fudge by getting the whole bounding box. |
| 482 | m_rects = new wxRect[1]; |
| 483 | m_numRects = 1; |
| 484 | m_rects[0] = m_region.GetBox(); |
| 485 | } |
| 486 | } |
| 487 | } |
| 488 | |
| 489 | /*! |
| 490 | * Increment iterator. The rectangle returned is the one after the |
| 491 | * incrementation. |
| 492 | */ |
| 493 | void wxRegionIterator::operator ++ () |
| 494 | { |
| 495 | if (m_current < m_numRects) |
| 496 | ++m_current; |
| 497 | } |
| 498 | |
| 499 | /*! |
| 500 | * Increment iterator. The rectangle returned is the one before the |
| 501 | * incrementation. |
| 502 | */ |
| 503 | void wxRegionIterator::operator ++ (int) |
| 504 | { |
| 505 | if (m_current < m_numRects) |
| 506 | ++m_current; |
| 507 | } |
| 508 | |
| 509 | wxCoord wxRegionIterator::GetX() const |
| 510 | { |
| 511 | if (m_current < m_numRects) |
| 512 | return m_rects[m_current].x; |
| 513 | return 0; |
| 514 | } |
| 515 | |
| 516 | wxCoord wxRegionIterator::GetY() const |
| 517 | { |
| 518 | if (m_current < m_numRects) |
| 519 | return m_rects[m_current].y; |
| 520 | return 0; |
| 521 | } |
| 522 | |
| 523 | wxCoord wxRegionIterator::GetW() const |
| 524 | { |
| 525 | if (m_current < m_numRects) |
| 526 | return m_rects[m_current].width ; |
| 527 | return 0; |
| 528 | } |
| 529 | |
| 530 | wxCoord wxRegionIterator::GetH() const |
| 531 | { |
| 532 | if (m_current < m_numRects) |
| 533 | return m_rects[m_current].height; |
| 534 | return 0; |
| 535 | } |
| 536 | |