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[wxWidgets.git] / src / gtk1 / colour.cpp
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1/////////////////////////////////////////////////////////////////////////////
2// Name: colour.cpp
3// Purpose:
4// Author: Robert Roebling
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5// Id: $Id$
6// Copyright: (c) 1998 Robert Roebling
65571936 7// Licence: wxWindows licence
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8/////////////////////////////////////////////////////////////////////////////
9
10
14f355c2 11#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
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12#pragma implementation "colour.h"
13#endif
14
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15// For compilers that support precompilation, includes "wx.h".
16#include "wx/wxprec.h"
17
ed39ff57 18#include "wx/colour.h"
e1bf3ad3 19#include "wx/gdicmn.h"
2b5f62a0 20#include "wx/gtk/private.h"
c801d85f 21
071a2d78 22#include <gdk/gdk.h>
307fc8d5 23#include <gdk/gdkx.h>
071a2d78 24#include <gdk/gdkprivate.h>
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25
26//-----------------------------------------------------------------------------
27// wxColour
28//-----------------------------------------------------------------------------
29
30class wxColourRefData: public wxObjectRefData
31{
47c93b63 32public:
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33 wxColourRefData()
34 {
35 m_color.red = 0;
36 m_color.green = 0;
37 m_color.blue = 0;
38 m_color.pixel = 0;
39 m_colormap = (GdkColormap *) NULL;
aad6765c 40 m_hasPixel = false;
c89f5c02 41 }
4e6b8309 42
dbb846c6 43 wxColourRefData(const wxColourRefData& data)
d84afea9 44 : wxObjectRefData()
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45 {
46 m_color = data.m_color;
47 m_colormap = data.m_colormap;
48 m_hasPixel = data.m_hasPixel;
49 }
50
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51 ~wxColourRefData()
52 {
53 FreeColour();
54 }
15248e43 55
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56 bool operator == (const wxColourRefData& data) const
57 {
58 return (m_colormap == data.m_colormap &&
59 m_hasPixel == data.m_hasPixel &&
60 m_color.red == data.m_color.red &&
61 m_color.green == data.m_color.green &&
62 m_color.blue == data.m_color.blue &&
63 m_color.pixel == data.m_color.pixel);
64 }
4e6b8309 65
68dda785 66 void FreeColour();
d13fd3e4 67 void AllocColour( GdkColormap* cmap );
8bbe427f 68
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69 GdkColor m_color;
70 GdkColormap *m_colormap;
71 bool m_hasPixel;
8bbe427f 72
f6bcfd97 73 friend class wxColour;
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74
75 // reference counter for systems with <= 8-Bit display
76 static gushort colMapAllocCounter[ 256 ];
77};
78
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79gushort wxColourRefData::colMapAllocCounter[ 256 ] =
80{
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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, 0, 0, 0, 0,
93 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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94};
95
68dda785 96void wxColourRefData::FreeColour()
c801d85f 97{
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98 if (m_colormap)
99 {
100#ifdef __WXGTK20__
101 if ((m_colormap->visual->type == GDK_VISUAL_GRAYSCALE) ||
102 (m_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR))
103#else
104 GdkColormapPrivate *private_colormap = (GdkColormapPrivate*) m_colormap;
105 if ((private_colormap->visual->type == GDK_VISUAL_GRAYSCALE) ||
106 (private_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR))
107#endif
108 {
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109 int idx = m_color.pixel;
110 colMapAllocCounter[ idx ] = colMapAllocCounter[ idx ] - 1;
4e6b8309 111
d13fd3e4 112 if (colMapAllocCounter[ idx ] == 0)
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113 gdk_colormap_free_colors( m_colormap, &m_color, 1 );
114 }
115 }
ff7b1510 116}
c801d85f 117
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118void wxColourRefData::AllocColour( GdkColormap *cmap )
119{
120 if (m_hasPixel && (m_colormap == cmap))
121 return;
122
123 FreeColour();
4e6b8309 124
d13fd3e4 125#ifdef __WXGTK20__
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126 if ( (cmap->visual->type == GDK_VISUAL_GRAYSCALE) ||
127 (cmap->visual->type == GDK_VISUAL_PSEUDO_COLOR) )
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128#else
129 GdkColormapPrivate *private_colormap = (GdkColormapPrivate*) cmap;
130 if ((private_colormap->visual->type == GDK_VISUAL_GRAYSCALE) ||
131 (private_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR))
132#endif
133 {
134 m_hasPixel = gdk_colormap_alloc_color( cmap, &m_color, FALSE, TRUE );
135 int idx = m_color.pixel;
136 colMapAllocCounter[ idx ] = colMapAllocCounter[ idx ] + 1;
137 }
138 else
139 {
140 m_hasPixel = gdk_color_alloc( cmap, &m_color );
141 }
142 m_colormap = cmap;
143}
144
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145//-----------------------------------------------------------------------------
146
147#define M_COLDATA ((wxColourRefData *)m_refData)
148
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149// GDK's values are in 0..65535 range, our are in 0..255
150#define SHIFT 8
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151
152IMPLEMENT_DYNAMIC_CLASS(wxColour,wxGDIObject)
153
4b5f3fe6 154wxColour::wxColour( unsigned char red, unsigned char green, unsigned char blue )
c801d85f 155{
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156 m_refData = new wxColourRefData();
157 M_COLDATA->m_color.red = ((unsigned short)red) << SHIFT;
158 M_COLDATA->m_color.green = ((unsigned short)green) << SHIFT;
159 M_COLDATA->m_color.blue = ((unsigned short)blue) << SHIFT;
160 M_COLDATA->m_color.pixel = 0;
ff7b1510 161}
8bbe427f 162
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163/* static */
164wxColour wxColour::CreateByName(const wxString& name)
165{
166 wxColour col;
167
168 GdkColor colGDK;
169 if ( gdk_color_parse( wxGTK_CONV( name ), &colGDK ) )
170 {
171 wxColourRefData *refData = new wxColourRefData;
172 refData->m_color = colGDK;
173 col.m_refData = refData;
174 }
175
176 return col;
177}
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178
179
68dda785 180void wxColour::InitFromName( const wxString &colourName )
c801d85f 181{
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182 // check the cache first
183 wxColour col;
184 if ( wxTheColourDatabase )
c801d85f 185 {
4e6b8309 186 col = wxTheColourDatabase->Find(colourName);
1ecc4d80 187 }
15248e43 188
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189 if ( !col.Ok() )
190 {
191 col = CreateByName(colourName);
192 }
15248e43 193
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194 if ( col.Ok() )
195 {
196 *this = col;
197 }
198 else
199 {
200 wxFAIL_MSG( wxT("wxColour: couldn't find colour") );
ff7b1510 201 }
ff7b1510 202}
c801d85f 203
68dda785 204wxColour::~wxColour()
c801d85f 205{
ff7b1510 206}
c801d85f 207
33b64e6f 208bool wxColour::operator == ( const wxColour& col ) const
8bbe427f 209{
4e6b8309 210 if (m_refData == col.m_refData)
aad6765c 211 return true;
15248e43 212
4e6b8309 213 if (!m_refData || !col.m_refData)
aad6765c 214 return false;
15248e43 215
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216 GdkColor *own = &(((wxColourRefData*)m_refData)->m_color);
217 GdkColor *other = &(((wxColourRefData*)col.m_refData)->m_color);
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218 return own->red == other->red &&
219 own->blue == other->blue &&
220 own->green == other->green;
ff7b1510 221}
c801d85f 222
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223wxObjectRefData *wxColour::CreateRefData() const
224{
225 return new wxColourRefData;
226}
227
228wxObjectRefData *wxColour::CloneRefData(const wxObjectRefData *data) const
8bbe427f 229{
c89f5c02 230 return new wxColourRefData(*(wxColourRefData *)data);
ff7b1510 231}
c801d85f 232
4b5f3fe6 233void wxColour::Set( unsigned char red, unsigned char green, unsigned char blue )
c801d85f 234{
c89f5c02 235 AllocExclusive();
4e6b8309 236
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237 M_COLDATA->m_color.red = ((unsigned short)red) << SHIFT;
238 M_COLDATA->m_color.green = ((unsigned short)green) << SHIFT;
239 M_COLDATA->m_color.blue = ((unsigned short)blue) << SHIFT;
240 M_COLDATA->m_color.pixel = 0;
4e6b8309 241
2b5f62a0 242 M_COLDATA->m_colormap = (GdkColormap*) NULL;
aad6765c 243 M_COLDATA->m_hasPixel = false;
ff7b1510 244}
c801d85f 245
68dda785 246unsigned char wxColour::Red() const
c801d85f 247{
223d09f6 248 wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );
8bbe427f 249
1ecc4d80 250 return (unsigned char)(M_COLDATA->m_color.red >> SHIFT);
ff7b1510 251}
c801d85f 252
68dda785 253unsigned char wxColour::Green() const
c801d85f 254{
223d09f6 255 wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );
8bbe427f 256
1ecc4d80 257 return (unsigned char)(M_COLDATA->m_color.green >> SHIFT);
ff7b1510 258}
c801d85f 259
68dda785 260unsigned char wxColour::Blue() const
c801d85f 261{
223d09f6 262 wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );
8bbe427f 263
1ecc4d80 264 return (unsigned char)(M_COLDATA->m_color.blue >> SHIFT);
ff7b1510 265}
c801d85f 266
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267void wxColour::CalcPixel( GdkColormap *cmap )
268{
1ecc4d80 269 if (!Ok()) return;
8bbe427f 270
d13fd3e4 271 M_COLDATA->AllocColour( cmap );
ff7b1510 272}
c801d85f 273
68dda785 274int wxColour::GetPixel() const
c801d85f 275{
223d09f6 276 wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );
8bbe427f 277
1ecc4d80 278 return M_COLDATA->m_color.pixel;
ff7b1510 279}
c801d85f 280
68dda785 281GdkColor *wxColour::GetColor() const
c801d85f 282{
223d09f6 283 wxCHECK_MSG( Ok(), (GdkColor *) NULL, wxT("invalid colour") );
8bbe427f 284
1ecc4d80 285 return &M_COLDATA->m_color;
ff7b1510 286}
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287
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