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[wxWidgets.git] / src / x11 / colour.cpp
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83df96d6 1/////////////////////////////////////////////////////////////////////////////
edc536d3 2// Name: src/x11/colour.cpp
83df96d6 3// Purpose: wxColour class
3cd0b8c5 4// Author: Julian Smart, Robert Roebling
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5// Modified by:
6// Created: 17/09/98
7// RCS-ID: $Id$
3cd0b8c5 8// Copyright: (c) Julian Smart, Robert Roebling
edc536d3 9// Licence: wxWindows licence
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10/////////////////////////////////////////////////////////////////////////////
11
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12// For compilers that support precompilation, includes "wx.h".
13#include "wx/wxprec.h"
14
15#include "wx/colour.h"
16
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17#ifndef WX_PRECOMP
18 #include "wx/app.h"
dd05139a 19 #include "wx/gdicmn.h"
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20#endif
21
7266b672 22#include "wx/x11/private.h"
83df96d6 23
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24//-----------------------------------------------------------------------------
25// wxColour
26//-----------------------------------------------------------------------------
83df96d6 27
8f884a0d 28class wxColourRefData : public wxGDIRefData
83df96d6 29{
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30public:
31 wxColourRefData()
32 {
33 m_color.red = 0;
34 m_color.green = 0;
35 m_color.blue = 0;
36 m_color.pixel = 0;
37 m_colormap = (WXColormap *) NULL;
aad6765c 38 m_hasPixel = false;
3cd0b8c5 39 }
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40
41 wxColourRefData(const wxColourRefData& data)
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42 {
43 m_color = data.m_color;
44 m_colormap = data.m_colormap;
45 m_hasPixel = data.m_hasPixel;
46 }
aad6765c 47
d3c7fc99 48 virtual ~wxColourRefData()
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49 {
50 FreeColour();
51 }
83df96d6 52
8f884a0d 53 bool operator==(const wxColourRefData& data) const
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54 {
55 return (m_colormap == data.m_colormap &&
56 m_hasPixel == data.m_hasPixel &&
57 m_color.red == data.m_color.red &&
58 m_color.green == data.m_color.green &&
59 m_color.blue == data.m_color.blue &&
60 m_color.pixel == data.m_color.pixel);
61 }
aad6765c 62
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63 void FreeColour();
64 void AllocColour( WXColormap cmap );
65
66 XColor m_color;
67 WXColormap m_colormap;
68 bool m_hasPixel;
69
70 friend class wxColour;
71
72 // reference counter for systems with <= 8-Bit display
73 static unsigned short colMapAllocCounter[ 256 ];
74};
75
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76unsigned short wxColourRefData::colMapAllocCounter[ 256 ] =
77{
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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, 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
91};
92
93void wxColourRefData::FreeColour()
83df96d6 94{
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95 if (!m_colormap)
96 return;
aad6765c 97#if !wxUSE_NANOX
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98 if ( wxTheApp &&
99 (wxTheApp->m_visualInfo->m_visualType == GrayScale ||
100 wxTheApp->m_visualInfo->m_visualType == PseudoColor) )
3cd0b8c5 101 {
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102 int idx = m_color.pixel;
103 colMapAllocCounter[ idx ] = colMapAllocCounter[ idx ] - 1;
aad6765c 104
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105 if (colMapAllocCounter[ idx ] == 0)
106 {
107 unsigned long pixel = m_color.pixel;
108 XFreeColors( wxGlobalDisplay(), (Colormap) m_colormap, &pixel, 1, 0 );
3cd0b8c5 109 }
3cd0b8c5 110 }
8601b2e1 111#endif
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112}
113
3cd0b8c5 114void wxColourRefData::AllocColour( WXColormap cmap )
83df96d6 115{
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116 if (m_hasPixel && (m_colormap == cmap))
117 return;
118
119 FreeColour();
120
8601b2e1 121#if !wxUSE_NANOX
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122 if ((wxTheApp->m_visualInfo->m_visualType == GrayScale) ||
123 (wxTheApp->m_visualInfo->m_visualType == PseudoColor))
3cd0b8c5 124 {
dc4025af 125 m_hasPixel = XAllocColor( wxGlobalDisplay(), (Colormap) cmap, &m_color );
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126 int idx = m_color.pixel;
127 colMapAllocCounter[ idx ] = colMapAllocCounter[ idx ] + 1;
128 }
129 else
8601b2e1 130#endif
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131 {
132 m_hasPixel = XAllocColor( wxGlobalDisplay(), (Colormap) cmap, &m_color );
133 }
aad6765c 134
3cd0b8c5 135 m_colormap = cmap;
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136}
137
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138//-----------------------------------------------------------------------------
139
140#define M_COLDATA ((wxColourRefData *)m_refData)
141
142#define SHIFT (8*(sizeof(short int)-sizeof(char)))
143
144IMPLEMENT_DYNAMIC_CLASS(wxColour,wxGDIObject)
145
3cd0b8c5 146wxColour::~wxColour()
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147{
148}
149
3cd0b8c5 150bool wxColour::operator == ( const wxColour& col ) const
83df96d6 151{
aad6765c 152 if (m_refData == col.m_refData) return true;
3cd0b8c5 153
aad6765c 154 if (!m_refData || !col.m_refData) return false;
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155
156 XColor *own = &(((wxColourRefData*)m_refData)->m_color);
157 XColor *other = &(((wxColourRefData*)col.m_refData)->m_color);
3cd0b8c5 158
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159 return (own->red == other->red)
160 && (own->green == other->green)
d35dec9b 161 && (own->blue == other->blue) ;
aad6765c 162
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163}
164
8f884a0d 165wxGDIRefData *wxColour::CreateGDIRefData() const
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166{
167 return new wxColourRefData;
168}
83df96d6 169
8f884a0d 170wxGDIRefData *wxColour::CloneGDIRefData(const wxGDIRefData *data) const
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171{
172 return new wxColourRefData(*(wxColourRefData *)data);
173}
83df96d6 174
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175void wxColour::InitRGBA(unsigned char red, unsigned char green, unsigned char blue,
176 unsigned char WXUNUSED(alpha))
83df96d6 177{
3cd0b8c5 178 AllocExclusive();
aad6765c 179
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180#if wxUSE_NANOX
181 M_COLDATA->m_color.red = ((unsigned short)red) ;
182 M_COLDATA->m_color.green = ((unsigned short)green) ;
183 M_COLDATA->m_color.blue = ((unsigned short)blue) ;
184#else
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185 M_COLDATA->m_color.red = ((unsigned short)red) << SHIFT;
186 M_COLDATA->m_color.green = ((unsigned short)green) << SHIFT;
187 M_COLDATA->m_color.blue = ((unsigned short)blue) << SHIFT;
0b5c0e1a 188#endif
3cd0b8c5 189 M_COLDATA->m_color.pixel = 0;
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190}
191
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192unsigned char wxColour::Red() const
193{
194 wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );
195
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196#if wxUSE_NANOX
197 return (unsigned char) M_COLDATA->m_color.red ;
198#else
3cd0b8c5 199 return (unsigned char)(M_COLDATA->m_color.red >> SHIFT);
0b5c0e1a 200#endif
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201}
202
203unsigned char wxColour::Green() const
204{
205 wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );
206
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207#if wxUSE_NANOX
208 return (unsigned char) M_COLDATA->m_color.green ;
209#else
3cd0b8c5 210 return (unsigned char)(M_COLDATA->m_color.green >> SHIFT);
0b5c0e1a 211#endif
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212}
213
214unsigned char wxColour::Blue() const
215{
216 wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );
217
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218#if wxUSE_NANOX
219 return (unsigned char) M_COLDATA->m_color.blue ;
220#else
3cd0b8c5 221 return (unsigned char)(M_COLDATA->m_color.blue >> SHIFT);
0b5c0e1a 222#endif
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223}
224
225void wxColour::CalcPixel( WXColormap cmap )
226{
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227 wxCHECK_RET( Ok(), wxT("invalid colour") );
228
229 wxCHECK_RET( cmap, wxT("invalid colormap") );
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230
231 M_COLDATA->AllocColour( cmap );
232}
233
234unsigned long wxColour::GetPixel() const
235{
236 wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );
237
238 return M_COLDATA->m_color.pixel;
239}
240
241WXColor *wxColour::GetColor() const
242{
243 wxCHECK_MSG( Ok(), (WXColor *) NULL, wxT("invalid colour") );
244
245 return (WXColor*) &M_COLDATA->m_color;
83df96d6 246}
40989e46 247
e86d4e59 248bool wxColour::FromString(const wxString& name)
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249{
250 Display *dpy = wxGlobalDisplay();
251 WXColormap colormap = wxTheApp->GetMainColormap( dpy );
252 XColor xcol;
e86d4e59 253 if ( XParseColor( dpy, (Colormap)colormap, name.mbc_str(), &xcol ) )
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254 {
255 UnRef();
256
257 m_refData = new wxColourRefData;
258 M_COLDATA->m_colormap = colormap;
259 M_COLDATA->m_color = xcol;
260 return true;
261 }
262
263 return wxColourBase::FromString(name);
264}