155 lines
3.6 KiB
C++
155 lines
3.6 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: src/osx/palette.cpp
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// Purpose: wxPalette
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// Author: Stefan Csomor
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// Modified by:
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// Created: 1998-01-01
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// Copyright: (c) Stefan Csomor
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#include "wx/wxprec.h"
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#if wxUSE_PALETTE
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#include "wx/palette.h"
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#include "wx/colour.h"
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wxIMPLEMENT_DYNAMIC_CLASS(wxPalette, wxGDIObject);
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// ============================================================================
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// wxPaletteRefData
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// ============================================================================
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class WXDLLEXPORT wxPaletteRefData: public wxGDIRefData
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{
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public:
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wxPaletteRefData();
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wxPaletteRefData(const wxPaletteRefData& data);
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virtual ~wxPaletteRefData();
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virtual bool IsOk() const wxOVERRIDE { return m_count > 0; }
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protected:
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wxColour* m_palette;
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wxInt32 m_count;
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friend class WXDLLIMPEXP_FWD_CORE wxPalette;
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wxDECLARE_NO_ASSIGN_CLASS(wxPaletteRefData);
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};
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wxPaletteRefData::wxPaletteRefData()
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{
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m_palette = NULL;
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m_count = 0;
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}
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wxPaletteRefData::wxPaletteRefData(const wxPaletteRefData& data) : wxGDIRefData()
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{
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m_count = data.m_count;
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m_palette = new wxColour[m_count];
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for ( wxInt32 i = 0; i < m_count; i++ )
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m_palette[i] = data.m_palette[i];
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}
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wxPaletteRefData::~wxPaletteRefData()
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{
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delete[] m_palette;
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}
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// ============================================================================
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// wxPalette
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// ============================================================================
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wxPalette::wxPalette()
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{
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}
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wxPalette::wxPalette(int n, const unsigned char *red, const unsigned char *green, const unsigned char *blue)
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{
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Create(n, red, green, blue);
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}
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wxPalette::~wxPalette()
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{
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}
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bool wxPalette::Create(int n, const unsigned char *red, const unsigned char *green, const unsigned char *blue)
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{
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UnRef();
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m_refData = new wxPaletteRefData;
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M_PALETTEDATA->m_count = n ;
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M_PALETTEDATA->m_palette = new wxColour[n] ;
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for ( int i = 0 ; i < n ; ++i)
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{
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M_PALETTEDATA->m_palette[i].Set( red[i] , green[i] , blue[i] ) ;
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}
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return true;
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}
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int wxPalette::GetPixel(unsigned char red, unsigned char green, unsigned char blue) const
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{
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if ( !m_refData )
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return wxNOT_FOUND;
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long bestdiff = 3 * 256 ;
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long bestpos = 0 ;
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for ( int i = 0 ; i < M_PALETTEDATA->m_count ; ++i )
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{
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const wxColour& col = M_PALETTEDATA->m_palette[i] ;
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long currentdiff;
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currentdiff = abs ( col.Red() - red ) + abs( col.Green() - green ) + abs ( col.Blue() - blue ) ;
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if ( currentdiff < bestdiff )
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{
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bestdiff = currentdiff ;
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bestpos = i ;
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if ( bestdiff == 0 )
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break ;
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}
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}
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return bestpos;
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}
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bool wxPalette::GetRGB(int index, unsigned char *red, unsigned char *green, unsigned char *blue) const
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{
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if ( !m_refData )
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return false;
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if (index < 0 || index >= M_PALETTEDATA->m_count)
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return false;
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const wxColour& col = M_PALETTEDATA->m_palette[index] ;
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*red = col.Red() ;
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*green = col.Green() ;
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*blue = col.Blue() ;
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return true;
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}
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int wxPalette::GetColoursCount() const
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{
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if (m_refData)
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return M_PALETTEDATA->m_count;
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return 0;
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}
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wxGDIRefData *wxPalette::CreateGDIRefData() const
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{
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return new wxPaletteRefData;
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}
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wxGDIRefData *wxPalette::CloneGDIRefData(const wxGDIRefData *data) const
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{
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return new wxPaletteRefData(*static_cast<const wxPaletteRefData *>(data));
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}
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#endif // wxUSE_PALETTE
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