X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/01111366c9b4ea40eee7f4b13ddfe6f6b9f886db..31ad423e4fb556ec225a63b161154d3bf3445c1b:/src/gtk/colour.cpp

diff --git a/src/gtk/colour.cpp b/src/gtk/colour.cpp
index 7e57df104f..ebb55bb7b0 100644
--- a/src/gtk/colour.cpp
+++ b/src/gtk/colour.cpp
@@ -2,20 +2,26 @@
 // Name:        colour.cpp
 // Purpose:
 // Author:      Robert Roebling
-// Created:     01/02/97
-// Id:
-// Copyright:   (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
-// Licence:   	wxWindows licence
+// Id:          $Id$
+// Copyright:   (c) 1998 Robert Roebling
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
 #pragma implementation "colour.h"
 #endif
 
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
 #include "wx/gdicmn.h"
+#include "wx/colour.h"
+#include "wx/gtk/private.h"
 
-#include "gdk/gdkprivate.h"
+#include <gdk/gdk.h>
+#include <gdk/gdkx.h>
+#include <gdk/gdkprivate.h>
 
 //-----------------------------------------------------------------------------
 // wxColour
@@ -23,207 +29,260 @@
 
 class wxColourRefData: public wxObjectRefData
 {
-  public:
-  
-    wxColourRefData();
-    ~wxColourRefData();
+public:
+    wxColourRefData()
+    {
+        m_color.red = 0;
+        m_color.green = 0;
+        m_color.blue = 0;
+        m_color.pixel = 0;
+        m_colormap = (GdkColormap *) NULL;
+        m_hasPixel = false;
+    }
+
+    wxColourRefData(const wxColourRefData& data)
+        : wxObjectRefData()
+    {
+        m_color = data.m_color;
+        m_colormap = data.m_colormap;
+        m_hasPixel = data.m_hasPixel;
+    }
+
+    ~wxColourRefData()
+    {
+        FreeColour();
+    }
+
+    bool operator == (const wxColourRefData& data) const
+    {
+        return (m_colormap == data.m_colormap &&
+                m_hasPixel == data.m_hasPixel &&
+                m_color.red == data.m_color.red &&
+                m_color.green == data.m_color.green &&
+                m_color.blue == data.m_color.blue &&
+                m_color.pixel == data.m_color.pixel);
+    }
+
     void FreeColour();
-  
+    void AllocColour( GdkColormap* cmap );
+
     GdkColor     m_color;
     GdkColormap *m_colormap;
     bool         m_hasPixel;
-    
-    friend wxColour;
+
+    friend class wxColour;
+
+    // reference counter for systems with <= 8-Bit display
+    static gushort colMapAllocCounter[ 256 ];
 };
 
-wxColourRefData::wxColourRefData()
+gushort wxColourRefData::colMapAllocCounter[ 256 ] =
 {
-  m_color.red = 0;
-  m_color.green = 0;
-  m_color.blue = 0;
-  m_color.pixel = 0;
-  m_colormap = (GdkColormap *) NULL;
-  m_hasPixel = FALSE;
-}
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+};
 
-wxColourRefData::~wxColourRefData()
+void wxColourRefData::FreeColour()
 {
-  FreeColour();
+    if (m_colormap)
+    {
+#ifdef __WXGTK20__
+        if ((m_colormap->visual->type == GDK_VISUAL_GRAYSCALE) ||
+            (m_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR))
+#else
+        GdkColormapPrivate *private_colormap = (GdkColormapPrivate*) m_colormap;
+        if ((private_colormap->visual->type == GDK_VISUAL_GRAYSCALE) ||
+            (private_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR))
+#endif
+        {
+            int idx = m_color.pixel;
+            colMapAllocCounter[ idx ] = colMapAllocCounter[ idx ] - 1;
+
+            if (colMapAllocCounter[ idx ] == 0)
+            gdk_colormap_free_colors( m_colormap, &m_color, 1 );
+        }
+    }
 }
 
-void wxColourRefData::FreeColour()
+void wxColourRefData::AllocColour( GdkColormap *cmap )
 {
-//  if (m_hasPixel) gdk_colors_free( m_colormap, &m_color, 1, 0 );
+    if (m_hasPixel && (m_colormap == cmap))
+        return;
+
+    FreeColour();
+
+#ifdef __WXGTK20__
+    if ( (cmap->visual->type == GDK_VISUAL_GRAYSCALE) ||
+	     (cmap->visual->type == GDK_VISUAL_PSEUDO_COLOR) )
+#else
+    GdkColormapPrivate *private_colormap = (GdkColormapPrivate*) cmap;
+    if ((private_colormap->visual->type == GDK_VISUAL_GRAYSCALE) ||
+        (private_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR))
+#endif
+    {
+        m_hasPixel = gdk_colormap_alloc_color( cmap, &m_color, FALSE, TRUE );
+        int idx = m_color.pixel;
+        colMapAllocCounter[ idx ] = colMapAllocCounter[ idx ] + 1;
+    }
+    else
+    {
+        m_hasPixel = gdk_color_alloc( cmap, &m_color );
+    }
+    m_colormap = cmap;
 }
 
 //-----------------------------------------------------------------------------
 
 #define M_COLDATA ((wxColourRefData *)m_refData)
 
-#define SHIFT (8*(sizeof(short int)-sizeof(char)))
+// GDK's values are in 0..65535 range, our are in 0..255
+#define SHIFT  8
 
 IMPLEMENT_DYNAMIC_CLASS(wxColour,wxGDIObject)
 
-wxColour::wxColour()
+wxColour::wxColour( unsigned char red, unsigned char green, unsigned char blue )
 {
+    m_refData = new wxColourRefData();
+    M_COLDATA->m_color.red = ((unsigned short)red) << SHIFT;
+    M_COLDATA->m_color.green = ((unsigned short)green) << SHIFT;
+    M_COLDATA->m_color.blue = ((unsigned short)blue) << SHIFT;
+    M_COLDATA->m_color.pixel = 0;
 }
 
-wxColour::wxColour( char red, char green, char blue )
+/* static */
+wxColour wxColour::CreateByName(const wxString& name)
 {
-  m_refData = new wxColourRefData();
-  M_COLDATA->m_color.red = ((unsigned short)red) << SHIFT;
-  M_COLDATA->m_color.green = ((unsigned short)green) << SHIFT;
-  M_COLDATA->m_color.blue = ((unsigned short)blue) << SHIFT;
-  M_COLDATA->m_color.pixel = 0;
+    wxColour col;
+
+    GdkColor colGDK;
+    if ( gdk_color_parse( wxGTK_CONV( name ), &colGDK ) )
+    {
+        wxColourRefData *refData = new wxColourRefData;
+        refData->m_color = colGDK;
+        col.m_refData = refData;
+    }
+
+    return col;
 }
-  
+
+
 void wxColour::InitFromName( const wxString &colourName )
 {
-  wxNode *node = (wxNode *) NULL;
-  if ( (wxTheColourDatabase) && (node = wxTheColourDatabase->Find(colourName)) ) 
-  {
-    wxColour *col = (wxColour*)node->Data();
-    UnRef();
-    if (col) Ref( *col );
-  } 
-  else 
-  {
-    m_refData = new wxColourRefData();
-    if (!gdk_color_parse( colourName, &M_COLDATA->m_color ))
+    // check the cache first
+    wxColour col;
+    if ( wxTheColourDatabase )
     {
-      wxFAIL_MSG( "wxColour: couldn't find colour" );
-      delete m_refData;
-      m_refData = (wxObjectRefData *) NULL;
+        col = wxTheColourDatabase->Find(colourName);
     }
-  }
-}
 
-wxColour::wxColour( const wxColour& col )
-{ 
-  Ref( col ); 
-}
+    if ( !col.Ok() )
+    {
+        col = CreateByName(colourName);
+    }
 
-wxColour::wxColour( const wxColour* col ) 
-{ 
-  if (col) Ref( *col ); 
+    if ( col.Ok() )
+    {
+        *this = col;
+    }
+    else
+    {
+        wxFAIL_MSG( wxT("wxColour: couldn't find colour") );
+    }
 }
 
 wxColour::~wxColour()
 {
 }
 
-wxColour& wxColour::operator = ( const wxColour& col ) 
-{ 
-  if (*this == col) return (*this); 
-  Ref( col ); 
-  return *this; 
+bool wxColour::operator == ( const wxColour& col ) const
+{
+    if (m_refData == col.m_refData)
+        return true;
+
+    if (!m_refData || !col.m_refData)
+        return false;
+
+    GdkColor *own = &(((wxColourRefData*)m_refData)->m_color);
+    GdkColor *other = &(((wxColourRefData*)col.m_refData)->m_color);
+    return own->red == other->red &&
+                own->blue == other->blue &&
+                     own->green == other->green;
 }
 
-bool wxColour::operator == ( const wxColour& col ) 
-{ 
-  return m_refData == col.m_refData; 
+wxObjectRefData *wxColour::CreateRefData() const
+{
+    return new wxColourRefData;
 }
 
-bool wxColour::operator != ( const wxColour& col) 
-{ 
-  return m_refData != col.m_refData; 
+wxObjectRefData *wxColour::CloneRefData(const wxObjectRefData *data) const
+{
+    return new wxColourRefData(*(wxColourRefData *)data);
 }
 
-void wxColour::Set( const unsigned char red, const unsigned char green, const unsigned char blue )
+void wxColour::Set( unsigned char red, unsigned char green, unsigned char blue )
 {
-  UnRef();
-  m_refData = new wxColourRefData();
-  M_COLDATA->m_color.red = ((unsigned short)red) << SHIFT;
-  M_COLDATA->m_color.green = ((unsigned short)green) << SHIFT;
-  M_COLDATA->m_color.blue = ((unsigned short)blue) << SHIFT;
-  M_COLDATA->m_color.pixel = 0;
+    AllocExclusive();
+
+    M_COLDATA->m_color.red = ((unsigned short)red) << SHIFT;
+    M_COLDATA->m_color.green = ((unsigned short)green) << SHIFT;
+    M_COLDATA->m_color.blue = ((unsigned short)blue) << SHIFT;
+    M_COLDATA->m_color.pixel = 0;
+
+    M_COLDATA->m_colormap = (GdkColormap*) NULL;
+    M_COLDATA->m_hasPixel = false;
 }
 
 unsigned char wxColour::Red() const
 {
-  if (!Ok())
-  {
-     wxFAIL_MSG( "invalid colour" );
-     return 0;
-  }
-  
-  return (unsigned char)(M_COLDATA->m_color.red >> SHIFT);
+    wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );
+
+    return (unsigned char)(M_COLDATA->m_color.red >> SHIFT);
 }
 
 unsigned char wxColour::Green() const
 {
-  if (!Ok())
-  {
-     wxFAIL_MSG( "invalid colour" );
-     return 0;
-  }
-  
-  return (unsigned char)(M_COLDATA->m_color.green >> SHIFT);
+    wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );
+
+    return (unsigned char)(M_COLDATA->m_color.green >> SHIFT);
 }
 
 unsigned char wxColour::Blue() const
 {
-  if (!Ok())
-  {
-     wxFAIL_MSG( "invalid colour" );
-     return 0;
-  }
-  
-  return (unsigned char)(M_COLDATA->m_color.blue >> SHIFT);
-}
+    wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );
 
-bool wxColour::Ok() const
-{
-  return (m_refData != NULL);
+    return (unsigned char)(M_COLDATA->m_color.blue >> SHIFT);
 }
 
 void wxColour::CalcPixel( GdkColormap *cmap )
 {
-  if (!Ok()) return;
-  
-  if ((M_COLDATA->m_hasPixel) && (M_COLDATA->m_colormap == cmap)) return;
-  M_COLDATA->FreeColour();
-  
-  GdkColormapPrivate *private_colormap = (GdkColormapPrivate*) cmap;
-  if ((private_colormap->visual->type == GDK_VISUAL_GRAYSCALE) ||
-      (private_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR))
-  {
-    GdkColor *colors = cmap->colors;
-    int max = 3 * (65536);
-    int index = -1;
-
-    for (int i = 0; i < cmap->size; i++)
-    {
-      int rdiff = (M_COLDATA->m_color.red - colors[i].red);
-      int gdiff = (M_COLDATA->m_color.green - colors[i].green);
-      int bdiff = (M_COLDATA->m_color.blue - colors[i].blue);
-      int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff);
-      if (sum < max) { index = i; max = sum; }
-    }
-    
-    M_COLDATA->m_hasPixel = TRUE;
-    M_COLDATA->m_color.pixel = index;
-  }
-  else
-  {
-    M_COLDATA->m_hasPixel = gdk_color_alloc( cmap, &M_COLDATA->m_color );
-  }
-  
-  M_COLDATA->m_colormap = cmap;
+    if (!Ok()) return;
+
+    M_COLDATA->AllocColour( cmap );
 }
 
 int wxColour::GetPixel() const
 {
-  if (!Ok()) return 0;
-  
-  return M_COLDATA->m_color.pixel;
+    wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );
+
+    return M_COLDATA->m_color.pixel;
 }
 
 GdkColor *wxColour::GetColor() const
 {
-  if (!Ok()) return (GdkColor *) NULL;
-  
-  return &M_COLDATA->m_color;
+    wxCHECK_MSG( Ok(), (GdkColor *) NULL, wxT("invalid colour") );
+
+    return &M_COLDATA->m_color;
 }