src/gtk/region.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        region.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Created:     01/02/98
   6 // Id:
   7 // Copyright:   (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "region.h"
  14 #endif
  15
  16 #include "wx/region.h"
  17
  18 //-----------------------------------------------------------------------------
  19 // wxRegion
  20 //-----------------------------------------------------------------------------
  21
  22 class wxRegionRefData: public wxObjectRefData
  23 {
  24   public:
  25
  26     wxRegionRefData(void);
  27     ~wxRegionRefData(void);
  28
  29   public:
  30
  31     GdkRegion  *m_region;
  32 };
  33
  34 wxRegionRefData::wxRegionRefData(void)
  35 {
  36   m_region = NULL;
  37 }
  38
  39 wxRegionRefData::~wxRegionRefData(void)
  40 {
  41   if (m_region) gdk_region_destroy( m_region );
  42 }
  43
  44 //-----------------------------------------------------------------------------
  45
  46 #define M_REGIONDATA ((wxRegionRefData *)m_refData)
  47
  48 IMPLEMENT_DYNAMIC_CLASS(wxRegion,wxGDIObject);
  49
  50 wxRegion::wxRegion( long x, long y, long w, long h )
  51 {
  52   m_refData = new wxRegionRefData();
  53   GdkRegion *reg = gdk_region_new();
  54   GdkRectangle rect;
  55   rect.x = x;
  56   rect.y = y;
  57   rect.width = w;
  58   rect.height = h;
  59   M_REGIONDATA->m_region = gdk_region_union_with_rect( reg, &rect );
  60   gdk_region_destroy( reg );
  61 }
  62
  63 wxRegion::wxRegion( const wxPoint& topLeft, const wxPoint& bottomRight )
  64 {
  65   m_refData = new wxRegionRefData();
  66   GdkRegion *reg = gdk_region_new();
  67   GdkRectangle rect;
  68   rect.x = topLeft.x;
  69   rect.y = topLeft.y;
  70   rect.width = bottomRight.x - rect.x;
  71   rect.height = bottomRight.y - rect.y;
  72   M_REGIONDATA->m_region = gdk_region_union_with_rect( reg, &rect );
  73   gdk_region_destroy( reg );
  74 }
  75
  76 wxRegion::wxRegion( const wxRect& rect )
  77 {
  78   m_refData = new wxRegionRefData();
  79   GdkRegion *reg = gdk_region_new();
  80   GdkRectangle g_rect;
  81   g_rect.x = rect.x;
  82   g_rect.y = rect.y;
  83   g_rect.width = rect.width;
  84   g_rect.height = rect.height;
  85   M_REGIONDATA->m_region = gdk_region_union_with_rect( reg, &g_rect );
  86   gdk_region_destroy( reg );
  87 }
  88
  89 wxRegion::wxRegion(void)
  90 {
  91   m_refData = new wxRegionRefData();
  92   M_REGIONDATA->m_region = gdk_region_new();
  93 }
  94
  95 wxRegion::~wxRegion(void)
  96 {
  97 }
  98
  99 void wxRegion::Clear(void)
 100 {
 101   UnRef();
 102   m_refData = new wxRegionRefData();
 103   M_REGIONDATA->m_region = gdk_region_new();
 104 }
 105
 106 bool wxRegion::Union( long x, long y, long width, long height )
 107 {
 108   GdkRectangle rect;
 109   rect.x = x;
 110   rect.y = y;
 111   rect.width = width;
 112   rect.height = height;
 113   GdkRegion *reg = gdk_region_union_with_rect( M_REGIONDATA->m_region, &rect );
 114   gdk_region_destroy( M_REGIONDATA->m_region );
 115   M_REGIONDATA->m_region = reg;
 116   return TRUE;
 117 }
 118
 119 bool wxRegion::Union( const wxRect& rect )
 120 {
 121   GdkRectangle g_rect;
 122   g_rect.x = rect.x;
 123   g_rect.y = rect.y;
 124   g_rect.width = rect.width;
 125   g_rect.height = rect.height;
 126   GdkRegion *reg = gdk_region_union_with_rect( M_REGIONDATA->m_region, &g_rect );
 127   gdk_region_destroy( M_REGIONDATA->m_region );
 128   M_REGIONDATA->m_region = reg;
 129   return TRUE;
 130 }
 131
 132 bool wxRegion::Union( const wxRegion& region )
 133 {
 134   GdkRegion *reg = gdk_regions_union( M_REGIONDATA->m_region, region.GetRegion() );
 135   gdk_region_destroy( M_REGIONDATA->m_region );
 136   M_REGIONDATA->m_region = reg;
 137   return TRUE;
 138 }
 139
 140 bool wxRegion::Intersect( long x, long y, long width, long height )
 141 {
 142   wxRegion reg( x, y, width, height );
 143   Intersect( reg );
 144   return TRUE;
 145 }
 146
 147 bool wxRegion::Intersect( const wxRect& rect )
 148 {
 149   wxRegion reg( rect );
 150   Intersect( reg );
 151   return TRUE;
 152 }
 153
 154 bool wxRegion::Intersect( const wxRegion& region )
 155 {
 156   GdkRegion *reg = gdk_regions_intersect( M_REGIONDATA->m_region, region.GetRegion() );
 157   gdk_region_destroy( M_REGIONDATA->m_region );
 158   M_REGIONDATA->m_region = reg;
 159   return TRUE;
 160 }
 161
 162 bool wxRegion::Subtract( long x, long y, long width, long height )
 163 {
 164   wxRegion reg( x, y, width, height );
 165   Subtract( reg );
 166   return TRUE;
 167 }
 168
 169 bool wxRegion::Subtract( const wxRect& rect )
 170 {
 171   wxRegion reg( rect );
 172   Subtract( reg );
 173   return TRUE;
 174 }
 175
 176 bool wxRegion::Subtract( const wxRegion& region )
 177 {
 178   GdkRegion *reg = gdk_regions_subtract( M_REGIONDATA->m_region, region.GetRegion() );
 179   gdk_region_destroy( M_REGIONDATA->m_region );
 180   M_REGIONDATA->m_region = reg;
 181   return TRUE;
 182 }
 183
 184 bool wxRegion::Xor( long x, long y, long width, long height )
 185 {
 186   wxRegion reg( x, y, width, height );
 187   Xor( reg );
 188   return TRUE;
 189 }
 190
 191 bool wxRegion::Xor( const wxRect& rect )
 192 {
 193   wxRegion reg( rect );
 194   Xor( reg );
 195   return TRUE;
 196 }
 197
 198 bool wxRegion::Xor( const wxRegion& region )
 199 {
 200   GdkRegion *reg = gdk_regions_xor( M_REGIONDATA->m_region, region.GetRegion() );
 201   gdk_region_destroy( M_REGIONDATA->m_region );
 202   M_REGIONDATA->m_region = reg;
 203   return TRUE;
 204 }
 205
 206 void wxRegion::GetBox( long& x, long& y, long&w, long &h ) const
 207 {
 208   x = 0;
 209   y = 0;
 210   w = -1;
 211   h = -1;
 212 }
 213
 214 wxRect wxRegion::GetBox(void) const
 215 {
 216   return wxRect( 0, 0, -1, -1 );
 217 }
 218
 219 bool wxRegion::Empty(void) const
 220 {
 221   return gdk_region_empty( M_REGIONDATA->m_region );
 222 }
 223
 224 wxRegionContain wxRegion::Contains( long x, long y ) const
 225 {
 226   if (gdk_region_point_in( M_REGIONDATA->m_region, x, y ))
 227     return wxInRegion;
 228   else
 229     return wxOutRegion;
 230 }
 231
 232 wxRegionContain wxRegion::Contains( long x, long y, long w, long h ) const
 233 {
 234   GdkRectangle rect;
 235   rect.x = x;
 236   rect.y = y;
 237   rect.width = w;
 238   rect.height = h;
 239   GdkOverlapType res = gdk_region_rect_in( M_REGIONDATA->m_region, &rect );
 240   switch (res)
 241   {
 242    case GDK_OVERLAP_RECTANGLE_IN:   return wxInRegion;
 243    case GDK_OVERLAP_RECTANGLE_OUT:  return wxOutRegion;
 244    case GDK_OVERLAP_RECTANGLE_PART: return wxPartRegion;
 245   }
 246   return wxOutRegion;
 247 }
 248
 249 GdkRegion *wxRegion::GetRegion(void) const
 250 {
 251   return M_REGIONDATA->m_region;
 252 }
 253