src/osx/core/colour.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/carbon/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 IMPLEMENT_DYNAMIC_CLASS(wxColour, wxObject)
  23
  24 #if wxOSX_USE_COCOA_OR_CARBON
  25 wxColour::wxColour(const RGBColor& col)
  26 {
  27     InitRGBColor(col);
  28 }
  29 #endif
  30
  31 wxColour::wxColour(CGColorRef col)
  32 {
  33     InitCGColorRef(col);
  34 }
  35
  36 #if wxOSX_USE_COCOA_OR_CARBON
  37 void wxColour::GetRGBColor( RGBColor *col ) const
  38 {
  39     col->red = (m_red << 8) + m_red;
  40     col->blue = (m_blue << 8) + m_blue;
  41     col->green = (m_green << 8) + m_green;
  42 }
  43
  44 wxColour& wxColour::operator=(const RGBColor& col)
  45 {
  46     InitRGBColor(col);
  47     return *this;
  48 }
  49 #endif
  50
  51 wxColour& wxColour::operator=(CGColorRef col)
  52 {
  53     InitCGColorRef(col);
  54     return *this;
  55 }
  56
  57 wxColour& wxColour::operator=(const wxColour& col)
  58 {
  59     m_red = col.m_red;
  60     m_green = col.m_green;
  61     m_blue = col.m_blue;
  62     m_alpha = col.m_alpha;
  63     m_cgColour = col.m_cgColour;
  64     return *this;
  65 }
  66
  67 void wxColour::InitRGBA (ChannelType r, ChannelType g, ChannelType b, ChannelType a)
  68 {
  69     m_red = r;
  70     m_green = g;
  71     m_blue = b;
  72     m_alpha = a ;
  73
  74     CGColorRef col = 0 ;
  75 #if wxOSX_USE_COCOA_OR_CARBON && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
  76     if ( CGColorCreateGenericRGB != NULL )
  77         col = CGColorCreateGenericRGB( (CGFloat)(r / 255.0), (CGFloat) (g / 255.0), (CGFloat) (b / 255.0), (CGFloat) (a / 255.0) );
  78     else
  79 #endif
  80     {
  81         CGFloat components[4] = { (CGFloat)(r / 255.0), (CGFloat) (g / 255.0), (CGFloat) (b / 255.0), (CGFloat) (a / 255.0) } ;
  82         col = CGColorCreate( wxMacGetGenericRGBColorSpace() , components ) ;
  83     }
  84     m_cgColour.reset( col );
  85 }
  86
  87 #if wxOSX_USE_COCOA_OR_CARBON
  88 void wxColour::InitRGBColor( const RGBColor& col )
  89 {
  90     m_red = col.red >> 8;
  91     m_blue = col.blue >> 8;
  92     m_green = col.green >> 8;
  93     m_alpha = wxALPHA_OPAQUE;
  94     CGColorRef cfcol;
  95 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
  96     if ( CGColorCreateGenericRGB != NULL )
  97         cfcol = CGColorCreateGenericRGB((CGFloat)(col.red / 65535.0), (CGFloat)(col.green / 65535.0),
  98                                         (CGFloat)(col.blue / 65535.0), (CGFloat) 1.0 );
  99     else
 100 #endif
 101     {
 102         CGFloat components[4] = {   (CGFloat)(col.red / 65535.0), (CGFloat)(col.green / 65535.0),
 103                                     (CGFloat)(col.blue / 65535.0), (CGFloat) 1.0 } ;
 104         cfcol = CGColorCreate( wxMacGetGenericRGBColorSpace() , components ) ;
 105     }
 106     m_cgColour.reset( cfcol );
 107 }
 108 #endif
 109
 110 void wxColour::InitCGColorRef( CGColorRef col )
 111 {
 112     m_cgColour.reset( col );
 113     size_t noComp = CGColorGetNumberOfComponents( col );
 114
 115     const CGFloat *components = NULL;
 116     if ( noComp >= 1 && noComp <= 4 )
 117     {
 118         // TODO verify whether we really are on a RGB color space
 119         m_alpha = wxALPHA_OPAQUE;
 120         components = CGColorGetComponents( col );
 121     }
 122     InitFromComponents(components, noComp);
 123 }
 124
 125 void wxColour::InitFromComponents(const CGFloat* components, size_t numComponents )
 126 {
 127     if ( numComponents < 1 || !components )
 128     {
 129         m_alpha = wxALPHA_OPAQUE;
 130         m_red = m_green = m_blue = 0;
 131         return;
 132     }
 133
 134     if ( numComponents >= 3 )
 135     {
 136         m_red = (int)(components[0]*255+0.5);
 137         m_green = (int)(components[1]*255+0.5);
 138         m_blue = (int)(components[2]*255+0.5);
 139         if ( numComponents == 4 )
 140             m_alpha =  (int)(components[3]*255+0.5);
 141     }
 142     else
 143     {
 144         m_red = (int)(components[0]*255+0.5);
 145         m_green = (int)(components[0]*255+0.5);
 146         m_blue = (int)(components[0]*255+0.5);
 147     }
 148 }
 149
 150 bool wxColour::operator == (const wxColour& colour) const
 151 {
 152     return ( (IsOk() == colour.IsOk()) && (!IsOk() ||
 153                                            CGColorEqualToColor( m_cgColour, colour.m_cgColour ) ) );
 154 }
 155
 156