| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: src/gtk1/colour.cpp |
| 3 | // Purpose: |
| 4 | // Author: Robert Roebling |
| 5 | // Id: $Id$ |
| 6 | // Copyright: (c) 1998 Robert Roebling |
| 7 | // Licence: wxWindows licence |
| 8 | ///////////////////////////////////////////////////////////////////////////// |
| 9 | |
| 10 | // For compilers that support precompilation, includes "wx.h". |
| 11 | #include "wx/wxprec.h" |
| 12 | |
| 13 | #include "wx/colour.h" |
| 14 | |
| 15 | #ifndef WX_PRECOMP |
| 16 | #include "wx/gdicmn.h" |
| 17 | #endif |
| 18 | |
| 19 | #include "wx/gtk1/private.h" |
| 20 | |
| 21 | #include <gdk/gdk.h> |
| 22 | #include <gdk/gdkx.h> |
| 23 | #include <gdk/gdkprivate.h> |
| 24 | |
| 25 | //----------------------------------------------------------------------------- |
| 26 | // wxColour |
| 27 | //----------------------------------------------------------------------------- |
| 28 | |
| 29 | class wxColourRefData: public wxObjectRefData |
| 30 | { |
| 31 | public: |
| 32 | wxColourRefData() |
| 33 | { |
| 34 | m_color.red = 0; |
| 35 | m_color.green = 0; |
| 36 | m_color.blue = 0; |
| 37 | m_color.pixel = 0; |
| 38 | m_colormap = (GdkColormap *) NULL; |
| 39 | m_hasPixel = false; |
| 40 | } |
| 41 | |
| 42 | wxColourRefData(const wxColourRefData& data) |
| 43 | : wxObjectRefData() |
| 44 | { |
| 45 | m_color = data.m_color; |
| 46 | m_colormap = data.m_colormap; |
| 47 | m_hasPixel = data.m_hasPixel; |
| 48 | } |
| 49 | |
| 50 | virtual ~wxColourRefData() |
| 51 | { |
| 52 | FreeColour(); |
| 53 | } |
| 54 | |
| 55 | bool operator == (const wxColourRefData& data) const |
| 56 | { |
| 57 | return (m_colormap == data.m_colormap && |
| 58 | m_hasPixel == data.m_hasPixel && |
| 59 | m_color.red == data.m_color.red && |
| 60 | m_color.green == data.m_color.green && |
| 61 | m_color.blue == data.m_color.blue && |
| 62 | m_color.pixel == data.m_color.pixel); |
| 63 | } |
| 64 | |
| 65 | void FreeColour(); |
| 66 | void AllocColour( GdkColormap* cmap ); |
| 67 | |
| 68 | GdkColor m_color; |
| 69 | GdkColormap *m_colormap; |
| 70 | bool m_hasPixel; |
| 71 | |
| 72 | friend class wxColour; |
| 73 | |
| 74 | // reference counter for systems with <= 8-Bit display |
| 75 | static gushort colMapAllocCounter[ 256 ]; |
| 76 | }; |
| 77 | |
| 78 | gushort wxColourRefData::colMapAllocCounter[ 256 ] = |
| 79 | { |
| 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, 0, 0, 0, 0, |
| 88 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 89 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 90 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 91 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 92 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 |
| 93 | }; |
| 94 | |
| 95 | void wxColourRefData::FreeColour() |
| 96 | { |
| 97 | if (m_colormap) |
| 98 | { |
| 99 | GdkColormapPrivate *private_colormap = (GdkColormapPrivate*) m_colormap; |
| 100 | if ((private_colormap->visual->type == GDK_VISUAL_GRAYSCALE) || |
| 101 | (private_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR)) |
| 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 | GdkColormapPrivate *private_colormap = (GdkColormapPrivate*) cmap; |
| 120 | if ((private_colormap->visual->type == GDK_VISUAL_GRAYSCALE) || |
| 121 | (private_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR)) |
| 122 | { |
| 123 | m_hasPixel = gdk_colormap_alloc_color( cmap, &m_color, FALSE, TRUE ); |
| 124 | int idx = m_color.pixel; |
| 125 | colMapAllocCounter[ idx ] = colMapAllocCounter[ idx ] + 1; |
| 126 | } |
| 127 | else |
| 128 | { |
| 129 | m_hasPixel = gdk_color_alloc( cmap, &m_color ); |
| 130 | } |
| 131 | m_colormap = cmap; |
| 132 | } |
| 133 | |
| 134 | //----------------------------------------------------------------------------- |
| 135 | |
| 136 | #define M_COLDATA ((wxColourRefData *)m_refData) |
| 137 | |
| 138 | // GDK's values are in 0..65535 range, our are in 0..255 |
| 139 | #define SHIFT 8 |
| 140 | |
| 141 | IMPLEMENT_DYNAMIC_CLASS(wxColour,wxGDIObject) |
| 142 | |
| 143 | wxColour::~wxColour() |
| 144 | { |
| 145 | } |
| 146 | |
| 147 | bool wxColour::operator == ( const wxColour& col ) const |
| 148 | { |
| 149 | if (m_refData == col.m_refData) |
| 150 | return true; |
| 151 | |
| 152 | if (!m_refData || !col.m_refData) |
| 153 | return false; |
| 154 | |
| 155 | GdkColor *own = &(((wxColourRefData*)m_refData)->m_color); |
| 156 | GdkColor *other = &(((wxColourRefData*)col.m_refData)->m_color); |
| 157 | return own->red == other->red && |
| 158 | own->blue == other->blue && |
| 159 | own->green == other->green; |
| 160 | } |
| 161 | |
| 162 | wxObjectRefData *wxColour::CreateRefData() const |
| 163 | { |
| 164 | return new wxColourRefData; |
| 165 | } |
| 166 | |
| 167 | wxObjectRefData *wxColour::CloneRefData(const wxObjectRefData *data) const |
| 168 | { |
| 169 | return new wxColourRefData(*(wxColourRefData *)data); |
| 170 | } |
| 171 | |
| 172 | void wxColour::InitRGBA(unsigned char red, unsigned char green, unsigned char blue, |
| 173 | unsigned char WXUNUSED(alpha)) |
| 174 | { |
| 175 | AllocExclusive(); |
| 176 | |
| 177 | M_COLDATA->m_color.red = ((unsigned short)red) << SHIFT; |
| 178 | M_COLDATA->m_color.green = ((unsigned short)green) << SHIFT; |
| 179 | M_COLDATA->m_color.blue = ((unsigned short)blue) << SHIFT; |
| 180 | M_COLDATA->m_color.pixel = 0; |
| 181 | |
| 182 | M_COLDATA->m_colormap = (GdkColormap*) NULL; |
| 183 | M_COLDATA->m_hasPixel = false; |
| 184 | } |
| 185 | |
| 186 | unsigned char wxColour::Red() const |
| 187 | { |
| 188 | wxCHECK_MSG( Ok(), 0, wxT("invalid colour") ); |
| 189 | |
| 190 | return (unsigned char)(M_COLDATA->m_color.red >> SHIFT); |
| 191 | } |
| 192 | |
| 193 | unsigned char wxColour::Green() const |
| 194 | { |
| 195 | wxCHECK_MSG( Ok(), 0, wxT("invalid colour") ); |
| 196 | |
| 197 | return (unsigned char)(M_COLDATA->m_color.green >> SHIFT); |
| 198 | } |
| 199 | |
| 200 | unsigned char wxColour::Blue() const |
| 201 | { |
| 202 | wxCHECK_MSG( Ok(), 0, wxT("invalid colour") ); |
| 203 | |
| 204 | return (unsigned char)(M_COLDATA->m_color.blue >> SHIFT); |
| 205 | } |
| 206 | |
| 207 | void wxColour::CalcPixel( GdkColormap *cmap ) |
| 208 | { |
| 209 | if (!Ok()) return; |
| 210 | |
| 211 | M_COLDATA->AllocColour( cmap ); |
| 212 | } |
| 213 | |
| 214 | int wxColour::GetPixel() const |
| 215 | { |
| 216 | wxCHECK_MSG( Ok(), 0, wxT("invalid colour") ); |
| 217 | |
| 218 | return M_COLDATA->m_color.pixel; |
| 219 | } |
| 220 | |
| 221 | GdkColor *wxColour::GetColor() const |
| 222 | { |
| 223 | wxCHECK_MSG( Ok(), (GdkColor *) NULL, wxT("invalid colour") ); |
| 224 | |
| 225 | return &M_COLDATA->m_color; |
| 226 | } |
| 227 | |
| 228 | bool wxColour::FromString(const wxChar *str) |
| 229 | { |
| 230 | GdkColor colGDK; |
| 231 | if ( gdk_color_parse( str, &colGDK ) ) |
| 232 | { |
| 233 | UnRef(); |
| 234 | |
| 235 | m_refData = new wxColourRefData; |
| 236 | M_COLDATA->m_color = colGDK; |
| 237 | return true; |
| 238 | } |
| 239 | |
| 240 | return wxColourBase::FromString(str); |
| 241 | } |