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[wxWidgets.git] / src / osx / core / colour.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/osx/core/colour.cpp
3 // Purpose: wxColour class
4 // Author: Stefan Csomor
5 // Modified by:
6 // Created: 1998-01-01
7 // RCS-ID: $Id$
8 // Copyright: (c) Stefan Csomor
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 #include "wx/wxprec.h"
13
14 #include "wx/colour.h"
15
16 #ifndef WX_PRECOMP
17 #include "wx/gdicmn.h"
18 #endif
19
20 #include "wx/osx/private.h"
21
22 #if wxOSX_USE_COCOA_OR_CARBON
23 wxColour::wxColour(const RGBColor& col)
24 {
25 InitRGBColor(col);
26 }
27 #endif
28
29 wxColour::wxColour(CGColorRef col)
30 {
31 InitCGColorRef(col);
32 }
33
34 #if wxOSX_USE_COCOA_OR_CARBON
35 void wxColour::GetRGBColor( RGBColor *col ) const
36 {
37 col->red = (m_red << 8) + m_red;
38 col->blue = (m_blue << 8) + m_blue;
39 col->green = (m_green << 8) + m_green;
40 }
41
42 wxColour& wxColour::operator=(const RGBColor& col)
43 {
44 InitRGBColor(col);
45 return *this;
46 }
47 #endif
48
49 wxColour& wxColour::operator=(CGColorRef col)
50 {
51 InitCGColorRef(col);
52 return *this;
53 }
54
55 wxColour& wxColour::operator=(const wxColour& col)
56 {
57 m_red = col.m_red;
58 m_green = col.m_green;
59 m_blue = col.m_blue;
60 m_alpha = col.m_alpha;
61 m_cgColour = col.m_cgColour;
62 return *this;
63 }
64
65 void wxColour::InitRGBA (ChannelType r, ChannelType g, ChannelType b, ChannelType a)
66 {
67 m_red = r;
68 m_green = g;
69 m_blue = b;
70 m_alpha = a ;
71
72 CGColorRef col = 0 ;
73 #if wxOSX_USE_COCOA_OR_CARBON
74 if ( CGColorCreateGenericRGB != NULL )
75 col = CGColorCreateGenericRGB( (CGFloat)(r / 255.0), (CGFloat) (g / 255.0), (CGFloat) (b / 255.0), (CGFloat) (a / 255.0) );
76 else
77 #endif
78 {
79 CGFloat components[4] = { (CGFloat)(r / 255.0), (CGFloat) (g / 255.0), (CGFloat) (b / 255.0), (CGFloat) (a / 255.0) } ;
80 col = CGColorCreate( wxMacGetGenericRGBColorSpace() , components ) ;
81 }
82 wxASSERT_MSG(col != NULL, "Invalid CoreGraphics Color");
83 m_cgColour.reset( col );
84 }
85
86 #if wxOSX_USE_COCOA_OR_CARBON
87 void wxColour::InitRGBColor( const RGBColor& col )
88 {
89 m_red = col.red >> 8;
90 m_blue = col.blue >> 8;
91 m_green = col.green >> 8;
92 m_alpha = wxALPHA_OPAQUE;
93 CGColorRef cfcol;
94 cfcol = CGColorCreateGenericRGB((CGFloat)(col.red / 65535.0), (CGFloat)(col.green / 65535.0),
95 (CGFloat)(col.blue / 65535.0), (CGFloat) 1.0 );
96 wxASSERT_MSG(cfcol != NULL, "Invalid CoreGraphics Color");
97 m_cgColour.reset( cfcol );
98 }
99 #endif
100
101 void wxColour::InitCGColorRef( CGColorRef col )
102 {
103 wxASSERT_MSG(col != NULL, "Invalid CoreGraphics Color");
104 m_cgColour.reset( col );
105 size_t noComp = CGColorGetNumberOfComponents( col );
106
107 const CGFloat *components = NULL;
108 if ( noComp >= 1 && noComp <= 4 )
109 {
110 // TODO verify whether we really are on a RGB color space
111 m_alpha = wxALPHA_OPAQUE;
112 components = CGColorGetComponents( col );
113 }
114 InitFromComponents(components, noComp);
115 }
116
117 void wxColour::InitFromComponents(const CGFloat* components, size_t numComponents )
118 {
119 if ( numComponents < 1 || !components )
120 {
121 m_alpha = wxALPHA_OPAQUE;
122 m_red = m_green = m_blue = 0;
123 return;
124 }
125
126 if ( numComponents >= 3 )
127 {
128 m_red = (int)(components[0]*255+0.5);
129 m_green = (int)(components[1]*255+0.5);
130 m_blue = (int)(components[2]*255+0.5);
131 if ( numComponents == 4 )
132 m_alpha = (int)(components[3]*255+0.5);
133 }
134 else
135 {
136 m_red = (int)(components[0]*255+0.5);
137 m_green = (int)(components[0]*255+0.5);
138 m_blue = (int)(components[0]*255+0.5);
139 }
140 }
141
142 bool wxColour::operator == (const wxColour& colour) const
143 {
144 return ( (IsOk() == colour.IsOk()) && (!IsOk() ||
145 CGColorEqualToColor( m_cgColour, colour.m_cgColour ) ) );
146 }
147
148