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 && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
  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 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
  95     if ( CGColorCreateGenericRGB != NULL )
  96         cfcol = CGColorCreateGenericRGB((CGFloat)(col.red / 65535.0), (CGFloat)(col.green / 65535.0),
  97                                         (CGFloat)(col.blue / 65535.0), (CGFloat) 1.0 );
  98     else
  99 #endif
 100     {
 101         CGFloat components[4] = {   (CGFloat)(col.red / 65535.0), (CGFloat)(col.green / 65535.0),
 102                                     (CGFloat)(col.blue / 65535.0), (CGFloat) 1.0 } ;
 103         cfcol = CGColorCreate( wxMacGetGenericRGBColorSpace() , components ) ;
 104     }
 105     wxASSERT_MSG(cfcol != NULL, "Invalid CoreGraphics Color");
 106     m_cgColour.reset( cfcol );
 107 }
 108 #endif
 109
 110 void wxColour::InitCGColorRef( CGColorRef col )
 111 {
 112     wxASSERT_MSG(col != NULL, "Invalid CoreGraphics Color");
 113     m_cgColour.reset( col );
 114     size_t noComp = CGColorGetNumberOfComponents( col );
 115
 116     const CGFloat *components = NULL;
 117     if ( noComp >= 1 && noComp <= 4 )
 118     {
 119         // TODO verify whether we really are on a RGB color space
 120         m_alpha = wxALPHA_OPAQUE;
 121         components = CGColorGetComponents( col );
 122     }
 123     InitFromComponents(components, noComp);
 124 }
 125
 126 void wxColour::InitFromComponents(const CGFloat* components, size_t numComponents )
 127 {
 128     if ( numComponents < 1 || !components )
 129     {
 130         m_alpha = wxALPHA_OPAQUE;
 131         m_red = m_green = m_blue = 0;
 132         return;
 133     }
 134
 135     if ( numComponents >= 3 )
 136     {
 137         m_red = (int)(components[0]*255+0.5);
 138         m_green = (int)(components[1]*255+0.5);
 139         m_blue = (int)(components[2]*255+0.5);
 140         if ( numComponents == 4 )
 141             m_alpha =  (int)(components[3]*255+0.5);
 142     }
 143     else
 144     {
 145         m_red = (int)(components[0]*255+0.5);
 146         m_green = (int)(components[0]*255+0.5);
 147         m_blue = (int)(components[0]*255+0.5);
 148     }
 149 }
 150
 151 bool wxColour::operator == (const wxColour& colour) const
 152 {
 153     return ( (IsOk() == colour.IsOk()) && (!IsOk() ||
 154                                            CGColorEqualToColor( m_cgColour, colour.m_cgColour ) ) );
 155 }
 156
 157