src/mgl/brush.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/mgl/brush.cpp
   3 // Purpose:
   4 // Author:      Vaclav Slavik
   5 // Id:          $Id$
   6 // Copyright:   (c) 2001-2002 SciTech Software, Inc. (www.scitechsoft.com)
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #ifdef __BORLANDC__
  14     #pragma hdrstop
  15 #endif
  16
  17 #include "wx/brush.h"
  18 #include "wx/mgl/private.h"
  19 #include "wx/mgl/dcmemory.h"
  20
  21
  22 // ---------------------------------------------------------------------------
  23 // helper functions
  24 // ---------------------------------------------------------------------------
  25
  26 // This function converts wxBitmap into pixpattern24_t representation
  27 // (used by wxBrush and wxPen)
  28
  29 void wxBitmapToPixPattern(const wxBitmap& bitmap,
  30                           pixpattern24_t *pix, pattern_t *mask)
  31 {
  32     wxMemoryDC mem;
  33     MGLDevCtx *dc;
  34     int x, y;
  35
  36     if ( pix != NULL )
  37     {
  38         mem.SelectObject(bitmap);
  39         dc = mem.GetMGLDC();
  40         wxCurrentDCSwitcher curDC(dc);
  41         dc->beginPixel();
  42         for (y = 0; y < 8; y++)
  43             for (x = 0; x < 8; x++)
  44                 dc->unpackColorFast(dc->getPixelFast(x, y),
  45                                     pix->p[y][x][2],
  46                                     pix->p[y][x][1],
  47                                     pix->p[y][x][0]);
  48         dc->endPixel();
  49     }
  50
  51     if ( mask && bitmap.GetMask() )
  52     {
  53         mem.SelectObject(bitmap.GetMask()->GetBitmap());
  54         dc = mem.GetMGLDC();
  55         wxCurrentDCSwitcher curDC(dc);
  56         dc->beginPixel();
  57         for (y = 0; y < 8; y++)
  58         {
  59             mask->p[y] = 0;
  60             for (x = 0; x < 8; x++)
  61                 if ( dc->getPixelFast(x, y) != 0 )
  62                     mask->p[y] = (uchar)(mask->p[y] | (1 << (7 - x)));
  63         }
  64         dc->endPixel();
  65     }
  66 }
  67
  68
  69 //-----------------------------------------------------------------------------
  70 // wxBrush
  71 //-----------------------------------------------------------------------------
  72
  73 class wxBrushRefData: public wxObjectRefData
  74 {
  75 public:
  76     wxBrushRefData();
  77     wxBrushRefData(const wxBrushRefData& data);
  78
  79     bool operator == (const wxBrushRefData& data) const
  80     {
  81         return (m_style == data.m_style &&
  82                 m_stipple.IsRefTo(&data.m_stipple) &&
  83                 m_colour == data.m_colour);
  84     }
  85
  86     int            m_style;
  87     wxColour       m_colour;
  88     wxBitmap       m_stipple;
  89     pixpattern24_t m_pixPattern;
  90     pattern_t      m_maskPattern;
  91 };
  92
  93 wxBrushRefData::wxBrushRefData()
  94 {
  95     m_style = 0;
  96
  97     int x, y, c;
  98     for (y = 0; y < 8; y++)
  99         for (x = 0; x < 8; x++)
 100             for (c = 0; c < 3; c++)
 101                 m_pixPattern.p[y][x][c] = 0;
 102     for (y = 0; y < 8; y++)
 103         m_maskPattern.p[y] = 0;
 104 }
 105
 106 wxBrushRefData::wxBrushRefData(const wxBrushRefData& data)
 107 {
 108     m_style = data.m_style;
 109     m_stipple = data.m_stipple;
 110     m_colour = data.m_colour;
 111
 112     int x, y, c;
 113     for (y = 0; y < 8; y++)
 114         for (x = 0; x < 8; x++)
 115             for (c = 0; c < 3; c++)
 116                 m_pixPattern.p[y][x][c] = data.m_pixPattern.p[y][x][c];
 117     for (y = 0; y < 8; y++)
 118         m_maskPattern.p[y] = data.m_maskPattern.p[y];
 119 }
 120
 121 //-----------------------------------------------------------------------------
 122
 123 #define M_BRUSHDATA ((wxBrushRefData *)m_refData)
 124
 125 IMPLEMENT_DYNAMIC_CLASS(wxBrush,wxGDIObject)
 126
 127 wxBrush::wxBrush(const wxColour &colour, int style)
 128 {
 129     m_refData = new wxBrushRefData();
 130     M_BRUSHDATA->m_style = style;
 131     M_BRUSHDATA->m_colour = colour;
 132 }
 133
 134 wxBrush::wxBrush(const wxBitmap &stippleBitmap)
 135 {
 136     wxCHECK_RET( stippleBitmap.Ok(), _T("invalid bitmap") );
 137     wxCHECK_RET( stippleBitmap.GetWidth() == 8 && stippleBitmap.GetHeight() == 8,
 138                   _T("stipple bitmap must be 8x8") );
 139
 140     m_refData = new wxBrushRefData();
 141     M_BRUSHDATA->m_colour = *wxBLACK;
 142
 143     M_BRUSHDATA->m_stipple = stippleBitmap;
 144     wxBitmapToPixPattern(stippleBitmap, &(M_BRUSHDATA->m_pixPattern),
 145                                         &(M_BRUSHDATA->m_maskPattern));
 146
 147     if (M_BRUSHDATA->m_stipple.GetMask())
 148         M_BRUSHDATA->m_style = wxSTIPPLE_MASK_OPAQUE;
 149     else
 150         M_BRUSHDATA->m_style = wxSTIPPLE;
 151 }
 152
 153 bool wxBrush::operator == (const wxBrush& brush) const
 154 {
 155     if (m_refData == brush.m_refData) return true;
 156
 157     if (!m_refData || !brush.m_refData) return false;
 158
 159     return *(wxBrushRefData*)m_refData == *(wxBrushRefData*)brush.m_refData;
 160 }
 161
 162 bool wxBrush::operator != (const wxBrush& brush) const
 163 {
 164     return m_refData != brush.m_refData;
 165 }
 166
 167 bool wxBrush::IsOk() const
 168 {
 169     return ((m_refData) && M_BRUSHDATA->m_colour.Ok());
 170 }
 171
 172 int wxBrush::GetStyle() const
 173 {
 174     if (m_refData == NULL)
 175     {
 176         wxFAIL_MSG( wxT("invalid brush") );
 177         return 0;
 178     }
 179
 180     return M_BRUSHDATA->m_style;
 181 }
 182
 183 wxColour &wxBrush::GetColour() const
 184 {
 185     if (m_refData == NULL)
 186     {
 187         wxFAIL_MSG( wxT("invalid brush") );
 188         return wxNullColour;
 189     }
 190
 191     return M_BRUSHDATA->m_colour;
 192 }
 193
 194 wxBitmap *wxBrush::GetStipple() const
 195 {
 196     if (m_refData == NULL)
 197     {
 198         wxFAIL_MSG( wxT("invalid brush") );
 199         return &wxNullBitmap;
 200     }
 201
 202     return &M_BRUSHDATA->m_stipple;
 203 }
 204
 205 void* wxBrush::GetMaskPattern() const
 206 {
 207     wxCHECK_MSG( Ok(), NULL, wxT("invalid brush") );
 208
 209     return (void*)&(M_BRUSHDATA->m_maskPattern);
 210 }
 211
 212 void* wxBrush::GetPixPattern() const
 213 {
 214     wxCHECK_MSG( Ok(), NULL, wxT("invalid brush") );
 215
 216     return (void*)&(M_BRUSHDATA->m_pixPattern);
 217 }
 218
 219 void wxBrush::SetColour(const wxColour& col)
 220 {
 221     AllocExclusive();
 222     M_BRUSHDATA->m_colour = col;
 223 }
 224
 225 void wxBrush::SetColour(unsigned char r, unsigned char g, unsigned char b)
 226 {
 227     AllocExclusive();
 228     M_BRUSHDATA->m_colour.Set(r, g, b);
 229 }
 230
 231 void wxBrush::SetStyle( int style )
 232 {
 233     AllocExclusive();
 234     M_BRUSHDATA->m_style = style;
 235 }
 236
 237 void wxBrush::SetStipple(const wxBitmap& stipple)
 238 {
 239     AllocExclusive();
 240
 241     wxCHECK_RET( stipple.Ok(), _T("invalid bitmap") );
 242     wxCHECK_RET( stipple.GetWidth() == 8 && stipple.GetHeight() == 8,
 243                   _T("stipple bitmap must be 8x8") );
 244
 245     M_BRUSHDATA->m_stipple = stipple;
 246     wxBitmapToPixPattern(stipple, &(M_BRUSHDATA->m_pixPattern),
 247                                   &(M_BRUSHDATA->m_maskPattern));
 248
 249     if (M_BRUSHDATA->m_stipple.GetMask())
 250         M_BRUSHDATA->m_style = wxSTIPPLE_MASK_OPAQUE;
 251     else
 252         M_BRUSHDATA->m_style = wxSTIPPLE;
 253 }
 254
 255 wxObjectRefData *wxBrush::CreateRefData() const
 256 {
 257     return new wxBrushRefData;
 258 }
 259
 260 wxObjectRefData *wxBrush::CloneRefData(const wxObjectRefData *data) const
 261 {
 262     return new wxBrushRefData(*(wxBrushRefData *)data);
 263 }