added Mark Newsam's patch

[wxWidgets.git] / src / mac / carbon / palette.cpp

diff --git a/src/mac/carbon/palette.cpp b/src/mac/carbon/palette.cpp
index f8db96f8d0894b7970275f7565fed661a7516cea..c847131f4021a64d2d4e3cd5f6d5520e0add2a1e 100644 (file)
--- a/src/mac/carbon/palette.cpp
+++ b/src/mac/carbon/palette.cpp
@@ -13,6 +13,10 @@
 #pragma implementation "palette.h"
 #endif
 
+#include "wx/defs.h"
+
+#if wxUSE_PALETTE
+
 #include "wx/palette.h"
 
 #if !USE_SHARED_LIBRARIES
@@ -26,12 +30,16 @@ IMPLEMENT_DYNAMIC_CLASS(wxPalette, wxGDIObject)
 
 wxPaletteRefData::wxPaletteRefData()
 {
-    // TODO
+       m_palette = NULL ;
+       m_count = 0 ;
 }
 
 wxPaletteRefData::~wxPaletteRefData()
 {
-    // TODO
+    if (m_palette != NULL) {
+        delete[] m_palette ;
+        m_palette = NULL;
+    }
 }
 
 wxPalette::wxPalette()
@@ -53,7 +61,13 @@ bool wxPalette::Create(int n, const unsigned char *red, const unsigned char *gre
 
   m_refData = new wxPaletteRefData;
 
-  // TODO
+  M_PALETTEDATA->m_count = n ;
+  M_PALETTEDATA->m_palette = new wxColour[n] ;
+  
+  for ( int i = 0 ; i < n ; ++i)
+  {
+       M_PALETTEDATA->m_palette[i].Set( red[i] , green[i] , blue[i] ) ;
+       }
 
   return FALSE;
 }
@@ -61,10 +75,26 @@ bool wxPalette::Create(int n, const unsigned char *red, const unsigned char *gre
 int wxPalette::GetPixel(const unsigned char red, const unsigned char green, const unsigned char blue) const
 {
     if ( !m_refData )
-       return FALSE;
-
-    // TODO
-    return FALSE;
+       return -1;
+
+    long bestdiff = 3 * 256 ;
+    long bestpos = 0 ;
+    long currentdiff ;
+    
+    for ( int i = 0  ; i < M_PALETTEDATA->m_count ; ++i )
+    {
+       const wxColour& col = &M_PALETTEDATA->m_palette[i] ;
+       currentdiff = abs ( col.Red() - red ) + abs( col.Green() - green ) + abs ( col.Blue() - blue )  ;
+       if ( currentdiff < bestdiff )
+       {
+               bestdiff = currentdiff ;
+               bestpos = i ;
+               if ( bestdiff == 0 )
+                       break ; 
+       }
+    }
+    
+    return bestpos;
 }
 
 bool wxPalette::GetRGB(int index, unsigned char *red, unsigned char *green, unsigned char *blue) const
@@ -72,11 +102,17 @@ bool wxPalette::GetRGB(int index, unsigned char *red, unsigned char *green, unsi
     if ( !m_refData )
            return FALSE;
 
-    if (index < 0 || index > 255)
+    if (index < 0 || index >= M_PALETTEDATA->m_count)
         return FALSE;
 
-    // TODO
-    return FALSE;
+    const wxColour& col = &M_PALETTEDATA->m_palette[index] ;
+    *red = col.Red() ;
+    *green = col.Green() ;
+    *blue = col.Blue() ;
+    
+    return TRUE;
 }
 
+#endif
+    // wxUSE_PALETTE