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/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.SelectObjectAsSource(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.SelectObjectAsSource(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 wxGDIRefData
  74 {
  75 public:
  76     wxBrushRefData();
  77     wxBrushRefData(const wxBrushRefData& data);
  78
  79     virtual bool IsOk() const { return m_colour.IsOk(); }
  80
  81     bool operator==(const wxBrushRefData& data) const
  82     {
  83         return (m_style == data.m_style &&
  84                 m_stipple.IsSameAs(data.m_stipple) &&
  85                 m_colour == data.m_colour);
  86     }
  87
  88     wxBrushStyle   m_style;
  89     wxColour       m_colour;
  90     wxBitmap       m_stipple;
  91     pixpattern24_t m_pixPattern;
  92     pattern_t      m_maskPattern;
  93 };
  94
  95 wxBrushRefData::wxBrushRefData()
  96 {
  97     m_style = 0;
  98
  99     int x, y, c;
 100     for (y = 0; y < 8; y++)
 101         for (x = 0; x < 8; x++)
 102             for (c = 0; c < 3; c++)
 103                 m_pixPattern.p[y][x][c] = 0;
 104     for (y = 0; y < 8; y++)
 105         m_maskPattern.p[y] = 0;
 106 }
 107
 108 wxBrushRefData::wxBrushRefData(const wxBrushRefData& data)
 109 {
 110     m_style = data.m_style;
 111     m_stipple = data.m_stipple;
 112     m_colour = data.m_colour;
 113
 114     int x, y, c;
 115     for (y = 0; y < 8; y++)
 116         for (x = 0; x < 8; x++)
 117             for (c = 0; c < 3; c++)
 118                 m_pixPattern.p[y][x][c] = data.m_pixPattern.p[y][x][c];
 119     for (y = 0; y < 8; y++)
 120         m_maskPattern.p[y] = data.m_maskPattern.p[y];
 121 }
 122
 123 //-----------------------------------------------------------------------------
 124
 125 #define M_BRUSHDATA ((wxBrushRefData *)m_refData)
 126
 127 IMPLEMENT_DYNAMIC_CLASS(wxBrush,wxGDIObject)
 128
 129 wxBrush::wxBrush(const wxColour &colour, wxBrushStyle style)
 130 {
 131     m_refData = new wxBrushRefData();
 132     M_BRUSHDATA->m_style = style;
 133     M_BRUSHDATA->m_colour = colour;
 134 }
 135
 136 wxBrush::wxBrush(const wxBitmap &stippleBitmap)
 137 {
 138     wxCHECK_RET( stippleBitmap.Ok(), _T("invalid bitmap") );
 139     wxCHECK_RET( stippleBitmap.GetWidth() == 8 && stippleBitmap.GetHeight() == 8,
 140                   _T("stipple bitmap must be 8x8") );
 141
 142     m_refData = new wxBrushRefData();
 143     M_BRUSHDATA->m_colour = *wxBLACK;
 144
 145     M_BRUSHDATA->m_stipple = stippleBitmap;
 146     wxBitmapToPixPattern(stippleBitmap, &(M_BRUSHDATA->m_pixPattern),
 147                                         &(M_BRUSHDATA->m_maskPattern));
 148
 149     if (M_BRUSHDATA->m_stipple.GetMask())
 150         M_BRUSHDATA->m_style = wxSTIPPLE_MASK_OPAQUE;
 151     else
 152         M_BRUSHDATA->m_style = wxSTIPPLE;
 153 }
 154
 155 bool wxBrush::operator == (const wxBrush& brush) const
 156 {
 157     if (m_refData == brush.m_refData) return true;
 158
 159     if (!m_refData || !brush.m_refData) return false;
 160
 161     return *(wxBrushRefData*)m_refData == *(wxBrushRefData*)brush.m_refData;
 162 }
 163
 164 bool wxBrush::operator != (const wxBrush& brush) const
 165 {
 166     return m_refData != brush.m_refData;
 167 }
 168
 169 wxBrushStyle wxBrush::GetStyle() const
 170 {
 171     if (m_refData == NULL)
 172     {
 173         wxFAIL_MSG( wxT("invalid brush") );
 174         return 0;
 175     }
 176
 177     return M_BRUSHDATA->m_style;
 178 }
 179
 180 wxColour &wxBrush::GetColour() const
 181 {
 182     if (m_refData == NULL)
 183     {
 184         wxFAIL_MSG( wxT("invalid brush") );
 185         return wxNullColour;
 186     }
 187
 188     return M_BRUSHDATA->m_colour;
 189 }
 190
 191 wxBitmap *wxBrush::GetStipple() const
 192 {
 193     if (m_refData == NULL)
 194     {
 195         wxFAIL_MSG( wxT("invalid brush") );
 196         return &wxNullBitmap;
 197     }
 198
 199     return &M_BRUSHDATA->m_stipple;
 200 }
 201
 202 void* wxBrush::GetMaskPattern() const
 203 {
 204     wxCHECK_MSG( Ok(), NULL, wxT("invalid brush") );
 205
 206     return (void*)&(M_BRUSHDATA->m_maskPattern);
 207 }
 208
 209 void* wxBrush::GetPixPattern() const
 210 {
 211     wxCHECK_MSG( Ok(), NULL, wxT("invalid brush") );
 212
 213     return (void*)&(M_BRUSHDATA->m_pixPattern);
 214 }
 215
 216 void wxBrush::SetColour(const wxColour& col)
 217 {
 218     AllocExclusive();
 219     M_BRUSHDATA->m_colour = col;
 220 }
 221
 222 void wxBrush::SetColour(unsigned char r, unsigned char g, unsigned char b)
 223 {
 224     AllocExclusive();
 225     M_BRUSHDATA->m_colour.Set(r, g, b);
 226 }
 227
 228 void wxBrush::SetStyle( wxBrushStyle style )
 229 {
 230     AllocExclusive();
 231     M_BRUSHDATA->m_style = style;
 232 }
 233
 234 void wxBrush::SetStipple(const wxBitmap& stipple)
 235 {
 236     AllocExclusive();
 237
 238     wxCHECK_RET( stipple.Ok(), _T("invalid bitmap") );
 239     wxCHECK_RET( stipple.GetWidth() == 8 && stipple.GetHeight() == 8,
 240                   _T("stipple bitmap must be 8x8") );
 241
 242     M_BRUSHDATA->m_stipple = stipple;
 243     wxBitmapToPixPattern(stipple, &(M_BRUSHDATA->m_pixPattern),
 244                                   &(M_BRUSHDATA->m_maskPattern));
 245
 246     if (M_BRUSHDATA->m_stipple.GetMask())
 247         M_BRUSHDATA->m_style = wxSTIPPLE_MASK_OPAQUE;
 248     else
 249         M_BRUSHDATA->m_style = wxSTIPPLE;
 250 }
 251
 252 wxGDIRefData *wxBrush::CreateGDIRefData() const
 253 {
 254     return new wxBrushRefData;
 255 }
 256
 257 wxGDIRefData *wxBrush::CloneGDIRefData(const wxGDIRefData *data) const
 258 {
 259     return new wxBrushRefData(*(wxBrushRefData *)data);
 260 }