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