src/gtk/colour.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        colour.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Created:     01/02/97
   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 "colour.h"
  14 #endif
  15
  16 #include "wx/gdicmn.h"
  17
  18 #ifdef USE_GDK_IMLIB
  19 #include "gdk_imlib.h"
  20 #endif
  21
  22 //-----------------------------------------------------------------------------
  23 // wxColour
  24 //-----------------------------------------------------------------------------
  25
  26 class wxColourRefData: public wxObjectRefData
  27 {
  28   public:
  29
  30     wxColourRefData(void);
  31     ~wxColourRefData(void);
  32     void FreeColour(void);
  33
  34     GdkColor     m_color;
  35     GdkColormap *m_colormap;
  36     bool         m_hasPixel;
  37
  38     friend wxColour;
  39 };
  40
  41 wxColourRefData::wxColourRefData(void)
  42 {
  43   m_color.red = 0;
  44   m_color.green = 0;
  45   m_color.blue = 0;
  46   m_color.pixel = 0;
  47   m_colormap = NULL;
  48   m_hasPixel = FALSE;
  49 };
  50
  51 wxColourRefData::~wxColourRefData(void)
  52 {
  53   FreeColour();
  54 };
  55
  56 void wxColourRefData::FreeColour(void)
  57 {
  58 //  if (m_hasPixel) gdk_colors_free( m_colormap, &m_color, 1, 0 );
  59 };
  60
  61 //-----------------------------------------------------------------------------
  62
  63 #define M_COLDATA ((wxColourRefData *)m_refData)
  64
  65 #define SHIFT (8*(sizeof(short int)-sizeof(char)))
  66
  67 IMPLEMENT_DYNAMIC_CLASS(wxColour,wxGDIObject)
  68
  69 wxColour::wxColour(void)
  70 {
  71 };
  72
  73 wxColour::wxColour( char red, char green, char blue )
  74 {
  75   m_refData = new wxColourRefData();
  76   M_COLDATA->m_color.red = ((unsigned short)red) << SHIFT;
  77   M_COLDATA->m_color.green = ((unsigned short)green) << SHIFT;
  78   M_COLDATA->m_color.blue = ((unsigned short)blue) << SHIFT;
  79   M_COLDATA->m_color.pixel = 0;
  80 };
  81
  82 wxColour::wxColour( const wxString &colourName )
  83 {
  84   wxNode *node = NULL;
  85   if ( (wxTheColourDatabase) && (node = wxTheColourDatabase->Find(colourName)) )
  86   {
  87     wxColour *col = (wxColour*)node->Data();
  88     UnRef();
  89     if (col) Ref( *col );
  90   }
  91   else
  92   {
  93     m_refData = new wxColourRefData();
  94     if (!gdk_color_parse( colourName, &M_COLDATA->m_color ))
  95     {
  96       delete m_refData;
  97       m_refData = NULL;
  98     };
  99   };
 100 };
 101
 102 wxColour::wxColour( const wxColour& col )
 103 {
 104   Ref( col );
 105 };
 106
 107 wxColour::wxColour( const wxColour* col )
 108 {
 109   if (col) Ref( *col );
 110 };
 111
 112 wxColour::~wxColour(void)
 113 {
 114 };
 115
 116 wxColour& wxColour::operator = ( const wxColour& col )
 117 {
 118   if (*this == col) return (*this);
 119   Ref( col );
 120   return *this;
 121 };
 122
 123 wxColour& wxColour::operator = ( const wxString& colourName )
 124 {
 125   UnRef();
 126   wxNode *node = NULL;
 127   if ((wxTheColourDatabase) && (node = wxTheColourDatabase->Find(colourName)) )
 128   {
 129     wxColour *col = (wxColour*)node->Data();
 130     if (col) Ref( *col );
 131   }
 132   else
 133   {
 134     m_refData = new wxColourRefData();
 135     if (!gdk_color_parse( colourName, &M_COLDATA->m_color ))
 136     {
 137       delete m_refData;
 138       m_refData = NULL;
 139     };
 140   };
 141   return *this;
 142 };
 143
 144 bool wxColour::operator == ( const wxColour& col )
 145 {
 146   return m_refData == col.m_refData;
 147 };
 148
 149 bool wxColour::operator != ( const wxColour& col)
 150 {
 151   return m_refData != col.m_refData;
 152 };
 153
 154 void wxColour::Set( const unsigned char red, const unsigned char green, const unsigned char blue )
 155 {
 156   UnRef();
 157   m_refData = new wxColourRefData();
 158   M_COLDATA->m_color.red = ((unsigned short)red) << SHIFT;
 159   M_COLDATA->m_color.green = ((unsigned short)green) << SHIFT;
 160   M_COLDATA->m_color.blue = ((unsigned short)blue) << SHIFT;
 161   M_COLDATA->m_color.pixel = 0;
 162 };
 163
 164 unsigned char wxColour::Red(void) const
 165 {
 166   if (!Ok()) return 0;
 167   return (unsigned char)(M_COLDATA->m_color.red >> SHIFT);
 168 };
 169
 170 unsigned char wxColour::Green(void) const
 171 {
 172   if (!Ok()) return 0;
 173   return (unsigned char)(M_COLDATA->m_color.green >> SHIFT);
 174 };
 175
 176 unsigned char wxColour::Blue(void) const
 177 {
 178   if (!Ok()) return 0;
 179   return (unsigned char)(M_COLDATA->m_color.blue >> SHIFT);
 180 };
 181
 182 bool wxColour::Ok(void) const
 183 {
 184   return (m_refData);
 185 };
 186
 187 void wxColour::CalcPixel( GdkColormap *cmap )
 188 {
 189   if (!Ok()) return;
 190
 191   if ((M_COLDATA->m_hasPixel) && (M_COLDATA->m_colormap == cmap)) return;
 192   M_COLDATA->FreeColour();
 193
 194 #ifdef USE_GDK_IMLIB
 195
 196   int r = M_COLDATA->m_color.red >> SHIFT;
 197   int g = M_COLDATA->m_color.green >> SHIFT;
 198   int b = M_COLDATA->m_color.blue >> SHIFT;
 199   M_COLDATA->m_hasPixel = TRUE;
 200   M_COLDATA->m_color.pixel = gdk_imlib_best_color_match( &r, &g, &b );
 201
 202 #else
 203
 204   M_COLDATA->m_hasPixel = gdk_color_alloc( cmap, &M_COLDATA->m_color );
 205
 206 #endif
 207
 208   M_COLDATA->m_colormap = cmap;
 209 };
 210
 211 int wxColour::GetPixel(void)
 212 {
 213   if (!Ok()) return 0;
 214
 215   return M_COLDATA->m_color.pixel;
 216 };
 217
 218 GdkColor *wxColour::GetColor(void)
 219 {
 220   if (!Ok()) return NULL;
 221
 222   return &M_COLDATA->m_color;
 223 };
 224
 225