src/mgl/brush.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        brush.cpp
   3 // Purpose:
   4 // Author:      Vaclav Slavik
   5 // Id:          $Id$
   6 // Copyright:   (c) 2001 SciTech Software, Inc. (www.scitechsoft.com)
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifdef __GNUG__
  11 #pragma implementation "brush.h"
  12 #endif
  13
  14 // For compilers that support precompilation, includes "wx.h".
  15 #include "wx/wxprec.h"
  16
  17 #ifdef __BORLANDC__
  18     #pragma hdrstop
  19 #endif
  20
  21 #include "wx/brush.h"
  22 #include "wx/mgl/private.h"
  23 #include "wx/mgl/dcmemory.h"
  24
  25
  26 // ---------------------------------------------------------------------------
  27 // helper functions
  28 // ---------------------------------------------------------------------------
  29
  30 // This function converts wxBitmap into pixpattern24_t representation
  31 // (used by wxBrush and wxPen)
  32
  33 void wxBitmapToPixPattern(const wxBitmap& bitmap,
  34                           pixpattern24_t *pix, pattern_t *mask)
  35 {
  36     wxMemoryDC mem;
  37     MGLDevCtx *dc;
  38     int x, y;
  39
  40     if ( pix != NULL )
  41     {
  42         mem.SelectObject(bitmap);
  43         dc = mem.GetMGLDC();
  44         wxCurrentDCSwitcher curDC(dc);
  45         dc->beginPixel();
  46         for (y = 0; y < 8; y++)
  47             for (x = 0; x < 8; x++)
  48                 dc->unpackColorFast(dc->getPixelFast(x, y),
  49                                     pix->p[y][x][2],
  50                                     pix->p[y][x][1],
  51                                     pix->p[y][x][0]);
  52         dc->endPixel();
  53     }
  54
  55     if ( mask && bitmap.GetMask() )
  56     {
  57         mem.SelectObject(*bitmap.GetMask()->GetBitmap());
  58         dc = mem.GetMGLDC();
  59         wxCurrentDCSwitcher curDC(dc);
  60         dc->beginPixel();
  61         for (y = 0; y < 8; y++)
  62         {
  63             mask->p[y] = 0;
  64             for (x = 0; x < 8; x++)
  65                 if ( dc->getPixelFast(x, y) != 0 )
  66                     mask->p[y] |= 1 << (7 - x);
  67         }
  68         dc->endPixel();
  69     }
  70 }
  71
  72
  73 //-----------------------------------------------------------------------------
  74 // wxBrush
  75 //-----------------------------------------------------------------------------
  76
  77 class wxBrushRefData: public wxObjectRefData
  78 {
  79 public:
  80     wxBrushRefData();
  81     wxBrushRefData(const wxBrushRefData& data);
  82
  83     int            m_style;
  84     wxColour       m_colour;
  85     wxBitmap       m_stipple;
  86     pixpattern24_t m_pixPattern;
  87     pattern_t      m_maskPattern;
  88 };
  89
  90 wxBrushRefData::wxBrushRefData()
  91 {
  92     m_style = 0;
  93
  94     int x, y, c;
  95     for (y = 0; y < 8; y++)
  96         for (x = 0; x < 8; x++)
  97             for (c = 0; c < 3; c++)
  98                 m_pixPattern.p[y][x][c] = 0;
  99     for (y = 0; y < 8; y++)
 100         m_maskPattern.p[y] = 0;
 101 }
 102
 103 wxBrushRefData::wxBrushRefData(const wxBrushRefData& data)
 104 {
 105     m_style = data.m_style;
 106     m_stipple = data.m_stipple;
 107     m_colour = data.m_colour;
 108
 109     int x, y, c;
 110     for (y = 0; y < 8; y++)
 111         for (x = 0; x < 8; x++)
 112             for (c = 0; c < 3; c++)
 113                 m_pixPattern.p[y][x][c] = data.m_pixPattern.p[y][x][c];
 114     for (y = 0; y < 8; y++)
 115         m_maskPattern.p[y] = data.m_maskPattern.p[y];
 116 }
 117
 118 //-----------------------------------------------------------------------------
 119
 120 #define M_BRUSHDATA ((wxBrushRefData *)m_refData)
 121
 122 IMPLEMENT_DYNAMIC_CLASS(wxBrush,wxGDIObject)
 123
 124 wxBrush::wxBrush(const wxColour &colour, int style)
 125 {
 126     m_refData = new wxBrushRefData();
 127     M_BRUSHDATA->m_style = style;
 128     M_BRUSHDATA->m_colour = colour;
 129 }
 130
 131 wxBrush::wxBrush(const wxBitmap &stippleBitmap)
 132 {
 133     wxCHECK_RET( stippleBitmap.Ok(), _T("invalid bitmap") );
 134     wxCHECK_RET( stippleBitmap.GetWidth() == 8 && stippleBitmap.GetHeight() == 8,
 135                   _T("stipple bitmap must be 8x8") );
 136
 137     m_refData = new wxBrushRefData();
 138     M_BRUSHDATA->m_colour = *wxBLACK;
 139
 140     M_BRUSHDATA->m_stipple = stippleBitmap;
 141     wxBitmapToPixPattern(stippleBitmap, &(M_BRUSHDATA->m_pixPattern),
 142                                         &(M_BRUSHDATA->m_maskPattern));
 143
 144     if (M_BRUSHDATA->m_stipple.GetMask())
 145                 M_BRUSHDATA->m_style = wxSTIPPLE_MASK_OPAQUE;
 146         else
 147                 M_BRUSHDATA->m_style = wxSTIPPLE;
 148 }
 149
 150 wxBrush::wxBrush(const wxBrush &brush)
 151 {
 152     Ref(brush);
 153 }
 154
 155 wxBrush& wxBrush::operator = (const wxBrush& brush)
 156 {
 157     if (*this == brush) return (*this);
 158     Ref(brush);
 159     return *this;
 160 }
 161
 162 bool wxBrush::operator == (const wxBrush& brush) const
 163 {
 164     return m_refData == brush.m_refData;
 165 }
 166
 167 bool wxBrush::operator != (const wxBrush& brush) const
 168 {
 169     return m_refData != brush.m_refData;
 170 }
 171
 172 bool wxBrush::Ok() const
 173 {
 174     return ((m_refData) && M_BRUSHDATA->m_colour.Ok());
 175 }
 176
 177 int wxBrush::GetStyle() const
 178 {
 179     if (m_refData == NULL)
 180     {
 181         wxFAIL_MSG( wxT("invalid brush") );
 182         return 0;
 183     }
 184
 185     return M_BRUSHDATA->m_style;
 186 }
 187
 188 wxColour &wxBrush::GetColour() const
 189 {
 190     if (m_refData == NULL)
 191     {
 192         wxFAIL_MSG( wxT("invalid brush") );
 193         return wxNullColour;
 194     }
 195
 196     return M_BRUSHDATA->m_colour;
 197 }
 198
 199 wxBitmap *wxBrush::GetStipple() const
 200 {
 201     if (m_refData == NULL)
 202     {
 203         wxFAIL_MSG( wxT("invalid brush") );
 204         return &wxNullBitmap;
 205     }
 206
 207     return &M_BRUSHDATA->m_stipple;
 208 }
 209
 210 void* wxBrush::GetMaskPattern() const
 211 {
 212     wxCHECK_MSG( Ok(), NULL, wxT("invalid brush") );
 213
 214     return (void*)&(M_BRUSHDATA->m_maskPattern);
 215 }
 216
 217 void* wxBrush::GetPixPattern() const
 218 {
 219     wxCHECK_MSG( Ok(), NULL, wxT("invalid brush") );
 220
 221     return (void*)&(M_BRUSHDATA->m_pixPattern);
 222 }
 223
 224 void wxBrush::SetColour(const wxColour& col)
 225 {
 226     Unshare();
 227     M_BRUSHDATA->m_colour = col;
 228 }
 229
 230 void wxBrush::SetColour(unsigned char r, unsigned char g, unsigned char b)
 231 {
 232     Unshare();
 233     M_BRUSHDATA->m_colour.Set(r, g, b);
 234 }
 235
 236 void wxBrush::SetStyle( int style )
 237 {
 238     Unshare();
 239     M_BRUSHDATA->m_style = style;
 240 }
 241
 242 void wxBrush::SetStipple(const wxBitmap& stipple)
 243 {
 244     Unshare();
 245
 246     wxCHECK_RET( stipple.Ok(), _T("invalid bitmap") );
 247     wxCHECK_RET( stipple.GetWidth() == 8 && stipple.GetHeight() == 8,
 248                   _T("stipple bitmap must be 8x8") );
 249
 250     M_BRUSHDATA->m_stipple = stipple;
 251     wxBitmapToPixPattern(stipple, &(M_BRUSHDATA->m_pixPattern),
 252                                   &(M_BRUSHDATA->m_maskPattern));
 253
 254     if (M_BRUSHDATA->m_stipple.GetMask())
 255         M_BRUSHDATA->m_style = wxSTIPPLE_MASK_OPAQUE;
 256     else
 257         M_BRUSHDATA->m_style = wxSTIPPLE;
 258 }
 259
 260 void wxBrush::Unshare()
 261 {
 262     if (!m_refData)
 263     {
 264         m_refData = new wxBrushRefData();
 265     }
 266     else
 267     {
 268         wxBrushRefData* ref = new wxBrushRefData(*(wxBrushRefData*)m_refData);
 269         UnRef();
 270         m_refData = ref;
 271     }
 272 }
 273