src/gtk/region.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        region.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifdef __GNUG__
  11 #pragma implementation "region.h"
  12 #endif
  13
  14 #include "wx/region.h"
  15
  16 #include <gdk/gdk.h>
  17 #include <gtk/gtk.h>
  18
  19
  20 //-----------------------------------------------------------------------------
  21 // wxRegion
  22 //-----------------------------------------------------------------------------
  23
  24 class wxRegionRefData: public wxObjectRefData
  25 {
  26 public:
  27     wxRegionRefData();
  28     ~wxRegionRefData();
  29
  30     GdkRegion  *m_region;
  31     wxList      m_rects;
  32 };
  33
  34 wxRegionRefData::wxRegionRefData()
  35 {
  36     m_region = (GdkRegion *) NULL;
  37 }
  38
  39 wxRegionRefData::~wxRegionRefData()
  40 {
  41     if (m_region) gdk_region_destroy( m_region );
  42
  43     wxNode *node = m_rects.First();
  44     while (node)
  45     {
  46         wxRect *r = (wxRect*)node->Data();
  47         delete r;
  48         node = node->Next();
  49     }
  50 }
  51
  52 //-----------------------------------------------------------------------------
  53
  54 #define M_REGIONDATA ((wxRegionRefData *)m_refData)
  55
  56 IMPLEMENT_DYNAMIC_CLASS(wxRegion,wxGDIObject);
  57
  58 wxRegion::wxRegion( long x, long y, long w, long h )
  59 {
  60     m_refData = new wxRegionRefData();
  61     GdkRegion *reg = gdk_region_new();
  62     GdkRectangle rect;
  63     rect.x = x;
  64     rect.y = y;
  65     rect.width = w;
  66     rect.height = h;
  67     M_REGIONDATA->m_region = gdk_region_union_with_rect( reg, &rect );
  68     gdk_region_destroy( reg );
  69     M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(x,y,w,h) );
  70 }
  71
  72 wxRegion::wxRegion( const wxPoint& topLeft, const wxPoint& bottomRight )
  73 {
  74     m_refData = new wxRegionRefData();
  75     GdkRegion *reg = gdk_region_new();
  76     GdkRectangle rect;
  77     rect.x = topLeft.x;
  78     rect.y = topLeft.y;
  79     rect.width = bottomRight.x - rect.x;
  80     rect.height = bottomRight.y - rect.y;
  81     M_REGIONDATA->m_region = gdk_region_union_with_rect( reg, &rect );
  82     gdk_region_destroy( reg );
  83     M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(topLeft,bottomRight) );
  84 }
  85
  86 wxRegion::wxRegion( const wxRect& rect )
  87 {
  88     m_refData = new wxRegionRefData();
  89     GdkRegion *reg = gdk_region_new();
  90     GdkRectangle g_rect;
  91     g_rect.x = rect.x;
  92     g_rect.y = rect.y;
  93     g_rect.width = rect.width;
  94     g_rect.height = rect.height;
  95     M_REGIONDATA->m_region = gdk_region_union_with_rect( reg, &g_rect );
  96     gdk_region_destroy( reg );
  97
  98     wxNode *node = M_REGIONDATA->m_rects.First();
  99     while (node)
 100     {
 101         wxRect *r = (wxRect*)node->Data();
 102         M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(r->x,r->y,r->width,r->height) );
 103         node = node->Next();
 104     }
 105 }
 106
 107 wxRegion::wxRegion()
 108 {
 109     m_refData = new wxRegionRefData();
 110     M_REGIONDATA->m_region = gdk_region_new();
 111 }
 112
 113 wxRegion::~wxRegion()
 114 {
 115 }
 116
 117 bool wxRegion::operator == ( const wxRegion& region )
 118 {
 119     return m_refData == region.m_refData;
 120 }
 121
 122 bool wxRegion::operator != ( const wxRegion& region )
 123 {
 124     return m_refData != region.m_refData;
 125 }
 126
 127 void wxRegion::Clear()
 128 {
 129     UnRef();
 130     m_refData = new wxRegionRefData();
 131     M_REGIONDATA->m_region = gdk_region_new();
 132 }
 133
 134 bool wxRegion::Union( long x, long y, long width, long height )
 135 {
 136     GdkRectangle rect;
 137     rect.x = x;
 138     rect.y = y;
 139     rect.width = width;
 140     rect.height = height;
 141     GdkRegion *reg = gdk_region_union_with_rect( M_REGIONDATA->m_region, &rect );
 142     gdk_region_destroy( M_REGIONDATA->m_region );
 143     M_REGIONDATA->m_region = reg;
 144     M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(x,y,width,height) );
 145     return TRUE;
 146 }
 147
 148 bool wxRegion::Union( const wxRect& rect )
 149 {
 150     GdkRectangle g_rect;
 151     g_rect.x = rect.x;
 152     g_rect.y = rect.y;
 153     g_rect.width = rect.width;
 154     g_rect.height = rect.height;
 155     GdkRegion *reg = gdk_region_union_with_rect( M_REGIONDATA->m_region, &g_rect );
 156     gdk_region_destroy( M_REGIONDATA->m_region );
 157     M_REGIONDATA->m_region = reg;
 158     M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(rect.x,rect.y,rect.width,rect.height) );
 159     return TRUE;
 160 }
 161
 162 bool wxRegion::Union( const wxRegion& region )
 163 {
 164     GdkRegion *reg = gdk_regions_union( M_REGIONDATA->m_region, region.GetRegion() );
 165     gdk_region_destroy( M_REGIONDATA->m_region );
 166     M_REGIONDATA->m_region = reg;
 167
 168     wxNode *node = region.GetRectList()->First();
 169     while (node)
 170     {
 171         wxRect *r = (wxRect*)node->Data();
 172         M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(r->x,r->y,r->width,r->height) );
 173         node = node->Next();
 174     }
 175
 176     return TRUE;
 177 }
 178
 179 bool wxRegion::Intersect( long x, long y, long width, long height )
 180 {
 181     wxRegion reg( x, y, width, height );
 182     Intersect( reg );
 183     return TRUE;
 184 }
 185
 186 bool wxRegion::Intersect( const wxRect& rect )
 187 {
 188     wxRegion reg( rect );
 189     Intersect( reg );
 190     return TRUE;
 191 }
 192
 193 bool wxRegion::Intersect( const wxRegion& region )
 194 {
 195     GdkRegion *reg = gdk_regions_intersect( M_REGIONDATA->m_region, region.GetRegion() );
 196     gdk_region_destroy( M_REGIONDATA->m_region );
 197     M_REGIONDATA->m_region = reg;
 198     return TRUE;
 199 }
 200
 201 bool wxRegion::Subtract( long x, long y, long width, long height )
 202 {
 203     wxRegion reg( x, y, width, height );
 204     Subtract( reg );
 205     return TRUE;
 206 }
 207
 208 bool wxRegion::Subtract( const wxRect& rect )
 209 {
 210     wxRegion reg( rect );
 211     Subtract( reg );
 212     return TRUE;
 213 }
 214
 215 bool wxRegion::Subtract( const wxRegion& region )
 216 {
 217     GdkRegion *reg = gdk_regions_subtract( M_REGIONDATA->m_region, region.GetRegion() );
 218     gdk_region_destroy( M_REGIONDATA->m_region );
 219     M_REGIONDATA->m_region = reg;
 220     return TRUE;
 221 }
 222
 223 bool wxRegion::Xor( long x, long y, long width, long height )
 224 {
 225     wxRegion reg( x, y, width, height );
 226     Xor( reg );
 227     return TRUE;
 228 }
 229
 230 bool wxRegion::Xor( const wxRect& rect )
 231 {
 232     wxRegion reg( rect );
 233     Xor( reg );
 234     return TRUE;
 235 }
 236
 237 bool wxRegion::Xor( const wxRegion& region )
 238 {
 239     GdkRegion *reg = gdk_regions_xor( M_REGIONDATA->m_region, region.GetRegion() );
 240     gdk_region_destroy( M_REGIONDATA->m_region );
 241     M_REGIONDATA->m_region = reg;
 242
 243     wxNode *node = region.GetRectList()->First();
 244     while (node)
 245     {
 246         wxRect *r = (wxRect*)node->Data();
 247         M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(r->x,r->y,r->width,r->height) );
 248         node = node->Next();
 249     }
 250
 251     return TRUE;
 252 }
 253
 254 void wxRegion::GetBox( long& x, long& y, long&w, long &h ) const
 255 {
 256     x = 0;
 257     y = 0;
 258     w = -1;
 259     h = -1;
 260     GdkRectangle rect;
 261     gdk_region_get_clipbox( M_REGIONDATA->m_region, &rect );
 262     x = rect.x;
 263     y = rect.y;
 264     w = rect.width;
 265     h = rect.height;
 266 }
 267
 268 wxRect wxRegion::GetBox() const
 269 {
 270     long x = 0;
 271     long y = 0;
 272     long w = -1;
 273     long h = -1;
 274     GetBox( x, y, w, h );
 275     return wxRect( x, y, w, h );
 276 }
 277
 278 bool wxRegion::Empty() const
 279 {
 280     return gdk_region_empty( M_REGIONDATA->m_region );
 281 }
 282
 283 wxRegionContain wxRegion::Contains( long x, long y ) const
 284 {
 285     if (gdk_region_point_in( M_REGIONDATA->m_region, x, y ))
 286         return wxInRegion;
 287     else
 288         return wxOutRegion;
 289 }
 290
 291 wxRegionContain wxRegion::Contains( long x, long y, long w, long h ) const
 292 {
 293     GdkRectangle rect;
 294     rect.x = x;
 295     rect.y = y;
 296     rect.width = w;
 297     rect.height = h;
 298     GdkOverlapType res = gdk_region_rect_in( M_REGIONDATA->m_region, &rect );
 299     switch (res)
 300     {
 301         case GDK_OVERLAP_RECTANGLE_IN:   return wxInRegion;
 302         case GDK_OVERLAP_RECTANGLE_OUT:  return wxOutRegion;
 303         case GDK_OVERLAP_RECTANGLE_PART: return wxPartRegion;
 304     }
 305     return wxOutRegion;
 306 }
 307
 308 wxRegionContain wxRegion::Contains(const wxPoint& pt) const
 309 {
 310     return Contains( pt.x, pt.y );
 311 }
 312
 313 wxRegionContain wxRegion::Contains(const wxRect& rect) const
 314 {
 315     return Contains( rect.x, rect.y, rect.width, rect.height );
 316 }
 317
 318 GdkRegion *wxRegion::GetRegion() const
 319 {
 320     return M_REGIONDATA->m_region;
 321 }
 322
 323 wxList *wxRegion::GetRectList() const
 324 {
 325     return &(M_REGIONDATA->m_rects);
 326 }
 327
 328 //-----------------------------------------------------------------------------
 329 // wxRegion
 330 //-----------------------------------------------------------------------------
 331
 332 IMPLEMENT_DYNAMIC_CLASS(wxRegionIterator,wxObject);
 333
 334 wxRegionIterator::wxRegionIterator()
 335 {
 336     m_current = 0;
 337 }
 338
 339 wxRegionIterator::wxRegionIterator( const wxRegion& region )
 340 {
 341     m_region = region;
 342     m_current = 0;
 343 }
 344
 345 void wxRegionIterator::Reset( const wxRegion& region )
 346 {
 347     m_region = region;
 348     m_current = 0;
 349 }
 350
 351 wxRegionIterator::operator bool () const
 352 {
 353     return m_current < m_region.GetRectList()->Number();
 354 }
 355
 356 bool wxRegionIterator::HaveRects() const
 357 {
 358     return m_current < m_region.GetRectList()->Number();
 359 }
 360
 361 void wxRegionIterator::operator ++ ()
 362 {
 363     if (m_current < m_region.GetRectList()->Number()) ++m_current;
 364 }
 365
 366 void wxRegionIterator::operator ++ (int)
 367 {
 368     if (m_current < m_region.GetRectList()->Number()) ++m_current;
 369 }
 370
 371 wxCoord wxRegionIterator::GetX() const
 372 {
 373     wxNode *node = m_region.GetRectList()->Nth( m_current );
 374     if (!node) return 0;
 375     wxRect *r = (wxRect*)node->Data();
 376     return r->x;
 377 }
 378
 379 wxCoord wxRegionIterator::GetY() const
 380 {
 381     wxNode *node = m_region.GetRectList()->Nth( m_current );
 382     if (!node) return 0;
 383     wxRect *r = (wxRect*)node->Data();
 384     return r->y;
 385 }
 386
 387 wxCoord wxRegionIterator::GetW() const
 388 {
 389     wxNode *node = m_region.GetRectList()->Nth( m_current );
 390     if (!node) return 0;
 391     wxRect *r = (wxRect*)node->Data();
 392     return r->width;
 393 }
 394
 395 wxCoord wxRegionIterator::GetH() const
 396 {
 397     wxNode *node = m_region.GetRectList()->Nth( m_current );
 398     if (!node) return 0;
 399     wxRect *r = (wxRect*)node->Data();
 400     return r->height;
 401 }
 402
 403