| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: colour.cpp |
| 3 | // Purpose: |
| 4 | // Author: Robert Roebling |
| 5 | // Id: $Id$ |
| 6 | // Copyright: (c) 1998 Robert Roebling |
| 7 | // Licence: wxWindows licence |
| 8 | ///////////////////////////////////////////////////////////////////////////// |
| 9 | |
| 10 | |
| 11 | #ifdef __GNUG__ |
| 12 | #pragma implementation "colour.h" |
| 13 | #endif |
| 14 | |
| 15 | #include "wx/gdicmn.h" |
| 16 | |
| 17 | #include <gdk/gdk.h> |
| 18 | #include <gdk/gdkx.h> |
| 19 | #include <gdk/gdkprivate.h> |
| 20 | |
| 21 | //----------------------------------------------------------------------------- |
| 22 | // wxColour |
| 23 | //----------------------------------------------------------------------------- |
| 24 | |
| 25 | class wxColourRefData: public wxObjectRefData |
| 26 | { |
| 27 | public: |
| 28 | wxColourRefData() |
| 29 | { |
| 30 | m_color.red = 0; |
| 31 | m_color.green = 0; |
| 32 | m_color.blue = 0; |
| 33 | m_color.pixel = 0; |
| 34 | m_colormap = (GdkColormap *) NULL; |
| 35 | m_hasPixel = FALSE; |
| 36 | } |
| 37 | |
| 38 | wxColourRefData(const wxColourRefData& data) |
| 39 | { |
| 40 | m_color = data.m_color; |
| 41 | m_colormap = data.m_colormap; |
| 42 | m_hasPixel = data.m_hasPixel; |
| 43 | } |
| 44 | |
| 45 | ~wxColourRefData() |
| 46 | { |
| 47 | FreeColour(); |
| 48 | } |
| 49 | |
| 50 | bool operator == (const wxColourRefData& data) const |
| 51 | { |
| 52 | return (m_colormap == data.m_colormap && |
| 53 | m_hasPixel == data.m_hasPixel && |
| 54 | m_color.red == data.m_color.red && |
| 55 | m_color.green == data.m_color.green && |
| 56 | m_color.blue == data.m_color.blue && |
| 57 | m_color.pixel == data.m_color.pixel); |
| 58 | } |
| 59 | |
| 60 | void FreeColour(); |
| 61 | void AllocColour( GdkColormap* cmap ); |
| 62 | |
| 63 | GdkColor m_color; |
| 64 | GdkColormap *m_colormap; |
| 65 | bool m_hasPixel; |
| 66 | |
| 67 | friend class wxColour; |
| 68 | |
| 69 | // reference counter for systems with <= 8-Bit display |
| 70 | static gushort colMapAllocCounter[ 256 ]; |
| 71 | }; |
| 72 | |
| 73 | gushort wxColourRefData::colMapAllocCounter[ 256 ] = |
| 74 | { |
| 75 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 76 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 77 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 78 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 79 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 80 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 81 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 82 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 83 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 84 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 85 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 86 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 87 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 |
| 88 | }; |
| 89 | |
| 90 | void wxColourRefData::FreeColour() |
| 91 | { |
| 92 | if (m_colormap) |
| 93 | { |
| 94 | #ifdef __WXGTK20__ |
| 95 | if ((m_colormap->visual->type == GDK_VISUAL_GRAYSCALE) || |
| 96 | (m_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR)) |
| 97 | #else |
| 98 | GdkColormapPrivate *private_colormap = (GdkColormapPrivate*) m_colormap; |
| 99 | if ((private_colormap->visual->type == GDK_VISUAL_GRAYSCALE) || |
| 100 | (private_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR)) |
| 101 | #endif |
| 102 | { |
| 103 | int idx = m_color.pixel; |
| 104 | colMapAllocCounter[ idx ] = colMapAllocCounter[ idx ] - 1; |
| 105 | |
| 106 | if (colMapAllocCounter[ idx ] == 0) |
| 107 | gdk_colormap_free_colors( m_colormap, &m_color, 1 ); |
| 108 | } |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | void wxColourRefData::AllocColour( GdkColormap *cmap ) |
| 113 | { |
| 114 | if (m_hasPixel && (m_colormap == cmap)) |
| 115 | return; |
| 116 | |
| 117 | FreeColour(); |
| 118 | |
| 119 | #ifdef __WXGTK20__ |
| 120 | if ( (cmap->visual->type == GDK_VISUAL_GRAYSCALE) || |
| 121 | (cmap->visual->type == GDK_VISUAL_PSEUDO_COLOR) ) |
| 122 | #else |
| 123 | GdkColormapPrivate *private_colormap = (GdkColormapPrivate*) cmap; |
| 124 | if ((private_colormap->visual->type == GDK_VISUAL_GRAYSCALE) || |
| 125 | (private_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR)) |
| 126 | #endif |
| 127 | { |
| 128 | m_hasPixel = gdk_colormap_alloc_color( cmap, &m_color, FALSE, TRUE ); |
| 129 | int idx = m_color.pixel; |
| 130 | colMapAllocCounter[ idx ] = colMapAllocCounter[ idx ] + 1; |
| 131 | } |
| 132 | else |
| 133 | { |
| 134 | m_hasPixel = gdk_color_alloc( cmap, &m_color ); |
| 135 | } |
| 136 | m_colormap = cmap; |
| 137 | } |
| 138 | |
| 139 | //----------------------------------------------------------------------------- |
| 140 | |
| 141 | #define M_COLDATA ((wxColourRefData *)m_refData) |
| 142 | |
| 143 | #define SHIFT (8*(sizeof(short int)-sizeof(char))) |
| 144 | |
| 145 | IMPLEMENT_DYNAMIC_CLASS(wxColour,wxGDIObject) |
| 146 | |
| 147 | wxColour::wxColour( unsigned char red, unsigned char green, unsigned char blue ) |
| 148 | { |
| 149 | m_refData = new wxColourRefData(); |
| 150 | M_COLDATA->m_color.red = ((unsigned short)red) << SHIFT; |
| 151 | M_COLDATA->m_color.green = ((unsigned short)green) << SHIFT; |
| 152 | M_COLDATA->m_color.blue = ((unsigned short)blue) << SHIFT; |
| 153 | M_COLDATA->m_color.pixel = 0; |
| 154 | } |
| 155 | |
| 156 | void wxColour::InitFromName( const wxString &colourName ) |
| 157 | { |
| 158 | wxNode *node = (wxNode *) NULL; |
| 159 | if ( (wxTheColourDatabase) && (node = wxTheColourDatabase->Find(colourName)) ) |
| 160 | { |
| 161 | wxColour *col = (wxColour*)node->Data(); |
| 162 | UnRef(); |
| 163 | if (col) Ref( *col ); |
| 164 | } |
| 165 | else |
| 166 | { |
| 167 | m_refData = new wxColourRefData(); |
| 168 | |
| 169 | if (!gdk_color_parse( colourName.mb_str(), &M_COLDATA->m_color )) |
| 170 | { |
| 171 | // VZ: asserts are good in general but this one is triggered by |
| 172 | // calling wxColourDatabase::FindColour() with an |
| 173 | // unrecognized colour name and this can't be avoided from the |
| 174 | // user code, so don't give it here |
| 175 | // |
| 176 | // a better solution would be to changed code in FindColour() |
| 177 | |
| 178 | //wxFAIL_MSG( wxT("wxColour: couldn't find colour") ); |
| 179 | |
| 180 | delete m_refData; |
| 181 | m_refData = (wxObjectRefData *) NULL; |
| 182 | } |
| 183 | } |
| 184 | } |
| 185 | |
| 186 | wxColour::~wxColour() |
| 187 | { |
| 188 | } |
| 189 | |
| 190 | bool wxColour::operator == ( const wxColour& col ) const |
| 191 | { |
| 192 | if (m_refData == col.m_refData) return TRUE; |
| 193 | |
| 194 | if (!m_refData || !col.m_refData) return FALSE; |
| 195 | |
| 196 | GdkColor *own = &(((wxColourRefData*)m_refData)->m_color); |
| 197 | GdkColor *other = &(((wxColourRefData*)col.m_refData)->m_color); |
| 198 | if (own->red != other->red) return FALSE; |
| 199 | if (own->blue != other->blue) return FALSE; |
| 200 | if (own->green != other->green) return FALSE; |
| 201 | |
| 202 | return TRUE; |
| 203 | } |
| 204 | |
| 205 | wxObjectRefData *wxColour::CreateRefData() const |
| 206 | { |
| 207 | return new wxColourRefData; |
| 208 | } |
| 209 | |
| 210 | wxObjectRefData *wxColour::CloneRefData(const wxObjectRefData *data) const |
| 211 | { |
| 212 | return new wxColourRefData(*(wxColourRefData *)data); |
| 213 | } |
| 214 | |
| 215 | void wxColour::Set( unsigned char red, unsigned char green, unsigned char blue ) |
| 216 | { |
| 217 | AllocExclusive(); |
| 218 | |
| 219 | m_refData = new wxColourRefData(); |
| 220 | M_COLDATA->m_color.red = ((unsigned short)red) << SHIFT; |
| 221 | M_COLDATA->m_color.green = ((unsigned short)green) << SHIFT; |
| 222 | M_COLDATA->m_color.blue = ((unsigned short)blue) << SHIFT; |
| 223 | M_COLDATA->m_color.pixel = 0; |
| 224 | } |
| 225 | |
| 226 | unsigned char wxColour::Red() const |
| 227 | { |
| 228 | wxCHECK_MSG( Ok(), 0, wxT("invalid colour") ); |
| 229 | |
| 230 | return (unsigned char)(M_COLDATA->m_color.red >> SHIFT); |
| 231 | } |
| 232 | |
| 233 | unsigned char wxColour::Green() const |
| 234 | { |
| 235 | wxCHECK_MSG( Ok(), 0, wxT("invalid colour") ); |
| 236 | |
| 237 | return (unsigned char)(M_COLDATA->m_color.green >> SHIFT); |
| 238 | } |
| 239 | |
| 240 | unsigned char wxColour::Blue() const |
| 241 | { |
| 242 | wxCHECK_MSG( Ok(), 0, wxT("invalid colour") ); |
| 243 | |
| 244 | return (unsigned char)(M_COLDATA->m_color.blue >> SHIFT); |
| 245 | } |
| 246 | |
| 247 | void wxColour::CalcPixel( GdkColormap *cmap ) |
| 248 | { |
| 249 | if (!Ok()) return; |
| 250 | |
| 251 | M_COLDATA->AllocColour( cmap ); |
| 252 | } |
| 253 | |
| 254 | int wxColour::GetPixel() const |
| 255 | { |
| 256 | wxCHECK_MSG( Ok(), 0, wxT("invalid colour") ); |
| 257 | |
| 258 | return M_COLDATA->m_color.pixel; |
| 259 | } |
| 260 | |
| 261 | GdkColor *wxColour::GetColor() const |
| 262 | { |
| 263 | wxCHECK_MSG( Ok(), (GdkColor *) NULL, wxT("invalid colour") ); |
| 264 | |
| 265 | return &M_COLDATA->m_color; |
| 266 | } |
| 267 | |
| 268 | |