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[wxWidgets.git] / src / gtk1 / colour.cpp
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c801d85f 1/////////////////////////////////////////////////////////////////////////////
3cbab641 2// Name: src/gtk1/colour.cpp
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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
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10// For compilers that support precompilation, includes "wx.h".
11#include "wx/wxprec.h"
12
ed39ff57 13#include "wx/colour.h"
40989e46 14
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15#ifndef WX_PRECOMP
16 #include "wx/gdicmn.h"
17#endif
18
3cbab641 19#include "wx/gtk1/private.h"
c801d85f 20
071a2d78 21#include <gdk/gdk.h>
307fc8d5 22#include <gdk/gdkx.h>
071a2d78 23#include <gdk/gdkprivate.h>
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24
25//-----------------------------------------------------------------------------
26// wxColour
27//-----------------------------------------------------------------------------
28
8f884a0d 29class wxColourRefData : public wxGDIRefData
c801d85f 30{
47c93b63 31public:
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32 wxColourRefData()
33 {
34 m_color.red = 0;
35 m_color.green = 0;
36 m_color.blue = 0;
37 m_color.pixel = 0;
d3b9f782 38 m_colormap = NULL;
aad6765c 39 m_hasPixel = false;
c89f5c02 40 }
4e6b8309 41
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42 wxColourRefData(const wxColourRefData& data)
43 {
44 m_color = data.m_color;
45 m_colormap = data.m_colormap;
46 m_hasPixel = data.m_hasPixel;
47 }
48
d3c7fc99 49 virtual ~wxColourRefData()
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50 {
51 FreeColour();
52 }
15248e43 53
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54 bool operator == (const wxColourRefData& data) const
55 {
56 return (m_colormap == data.m_colormap &&
57 m_hasPixel == data.m_hasPixel &&
58 m_color.red == data.m_color.red &&
59 m_color.green == data.m_color.green &&
60 m_color.blue == data.m_color.blue &&
61 m_color.pixel == data.m_color.pixel);
62 }
4e6b8309 63
68dda785 64 void FreeColour();
d13fd3e4 65 void AllocColour( GdkColormap* cmap );
8bbe427f 66
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67 GdkColor m_color;
68 GdkColormap *m_colormap;
69 bool m_hasPixel;
8bbe427f 70
f6bcfd97 71 friend class wxColour;
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72
73 // reference counter for systems with <= 8-Bit display
74 static gushort colMapAllocCounter[ 256 ];
75};
76
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77gushort wxColourRefData::colMapAllocCounter[ 256 ] =
78{
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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, 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
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92};
93
68dda785 94void wxColourRefData::FreeColour()
c801d85f 95{
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96 if (m_colormap)
97 {
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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))
47c93b63 101 {
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102 int idx = m_color.pixel;
103 colMapAllocCounter[ idx ] = colMapAllocCounter[ idx ] - 1;
4e6b8309 104
d13fd3e4 105 if (colMapAllocCounter[ idx ] == 0)
0a164d4c 106 gdk_colormap_free_colors( m_colormap, &m_color, 1 );
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107 }
108 }
ff7b1510 109}
c801d85f 110
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111void wxColourRefData::AllocColour( GdkColormap *cmap )
112{
113 if (m_hasPixel && (m_colormap == cmap))
114 return;
115
116 FreeColour();
4e6b8309 117
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118 GdkColormapPrivate *private_colormap = (GdkColormapPrivate*) cmap;
119 if ((private_colormap->visual->type == GDK_VISUAL_GRAYSCALE) ||
120 (private_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR))
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121 {
122 m_hasPixel = gdk_colormap_alloc_color( cmap, &m_color, FALSE, TRUE );
123 int idx = m_color.pixel;
124 colMapAllocCounter[ idx ] = colMapAllocCounter[ idx ] + 1;
125 }
126 else
127 {
128 m_hasPixel = gdk_color_alloc( cmap, &m_color );
129 }
130 m_colormap = cmap;
131}
132
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133//-----------------------------------------------------------------------------
134
135#define M_COLDATA ((wxColourRefData *)m_refData)
136
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137// GDK's values are in 0..65535 range, our are in 0..255
138#define SHIFT 8
c801d85f 139
68dda785 140wxColour::~wxColour()
c801d85f 141{
ff7b1510 142}
c801d85f 143
33b64e6f 144bool wxColour::operator == ( const wxColour& col ) const
8bbe427f 145{
4e6b8309 146 if (m_refData == col.m_refData)
aad6765c 147 return true;
15248e43 148
4e6b8309 149 if (!m_refData || !col.m_refData)
aad6765c 150 return false;
15248e43 151
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152 GdkColor *own = &(((wxColourRefData*)m_refData)->m_color);
153 GdkColor *other = &(((wxColourRefData*)col.m_refData)->m_color);
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154 return own->red == other->red &&
155 own->blue == other->blue &&
156 own->green == other->green;
ff7b1510 157}
c801d85f 158
8f884a0d 159wxGDIRefData *wxColour::CreateGDIRefData() const
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160{
161 return new wxColourRefData;
162}
163
8f884a0d 164wxGDIRefData *wxColour::CloneGDIRefData(const wxGDIRefData *data) const
8bbe427f 165{
c89f5c02 166 return new wxColourRefData(*(wxColourRefData *)data);
ff7b1510 167}
c801d85f 168
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169void wxColour::InitRGBA(unsigned char red, unsigned char green, unsigned char blue,
170 unsigned char WXUNUSED(alpha))
c801d85f 171{
c89f5c02 172 AllocExclusive();
4e6b8309 173
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174 M_COLDATA->m_color.red = ((unsigned short)red) << SHIFT;
175 M_COLDATA->m_color.green = ((unsigned short)green) << SHIFT;
176 M_COLDATA->m_color.blue = ((unsigned short)blue) << SHIFT;
177 M_COLDATA->m_color.pixel = 0;
4e6b8309 178
d3b9f782 179 M_COLDATA->m_colormap = NULL;
aad6765c 180 M_COLDATA->m_hasPixel = false;
ff7b1510 181}
c801d85f 182
68dda785 183unsigned char wxColour::Red() const
c801d85f 184{
a1b806b9 185 wxCHECK_MSG( IsOk(), 0, wxT("invalid colour") );
8bbe427f 186
1ecc4d80 187 return (unsigned char)(M_COLDATA->m_color.red >> SHIFT);
ff7b1510 188}
c801d85f 189
68dda785 190unsigned char wxColour::Green() const
c801d85f 191{
a1b806b9 192 wxCHECK_MSG( IsOk(), 0, wxT("invalid colour") );
8bbe427f 193
1ecc4d80 194 return (unsigned char)(M_COLDATA->m_color.green >> SHIFT);
ff7b1510 195}
c801d85f 196
68dda785 197unsigned char wxColour::Blue() const
c801d85f 198{
a1b806b9 199 wxCHECK_MSG( IsOk(), 0, wxT("invalid colour") );
8bbe427f 200
1ecc4d80 201 return (unsigned char)(M_COLDATA->m_color.blue >> SHIFT);
ff7b1510 202}
c801d85f 203
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204void wxColour::CalcPixel( GdkColormap *cmap )
205{
a1b806b9 206 if (!IsOk()) return;
8bbe427f 207
d13fd3e4 208 M_COLDATA->AllocColour( cmap );
ff7b1510 209}
c801d85f 210
68dda785 211int wxColour::GetPixel() const
c801d85f 212{
a1b806b9 213 wxCHECK_MSG( IsOk(), 0, wxT("invalid colour") );
8bbe427f 214
1ecc4d80 215 return M_COLDATA->m_color.pixel;
ff7b1510 216}
c801d85f 217
68dda785 218GdkColor *wxColour::GetColor() const
c801d85f 219{
a1b806b9 220 wxCHECK_MSG( IsOk(), NULL, wxT("invalid colour") );
8bbe427f 221
1ecc4d80 222 return &M_COLDATA->m_color;
ff7b1510 223}
40989e46 224
e86d4e59 225bool wxColour::FromString(const wxString& str)
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226{
227 GdkColor colGDK;
e86d4e59 228 if ( gdk_color_parse( wxGTK_CONV(str), &colGDK ) )
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229 {
230 UnRef();
231
232 m_refData = new wxColourRefData;
233 M_COLDATA->m_color = colGDK;
234 return true;
235 }
236
237 return wxColourBase::FromString(str);
238}