| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: src/osx/palette.cpp |
| 3 | // Purpose: wxPalette |
| 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 | #if wxUSE_PALETTE |
| 15 | |
| 16 | #include "wx/palette.h" |
| 17 | #include "wx/colour.h" |
| 18 | |
| 19 | IMPLEMENT_DYNAMIC_CLASS(wxPalette, wxGDIObject) |
| 20 | |
| 21 | // ============================================================================ |
| 22 | // wxPaletteRefData |
| 23 | // ============================================================================ |
| 24 | |
| 25 | class WXDLLEXPORT wxPaletteRefData: public wxGDIRefData |
| 26 | { |
| 27 | public: |
| 28 | wxPaletteRefData(); |
| 29 | wxPaletteRefData(const wxPaletteRefData& data); |
| 30 | virtual ~wxPaletteRefData(); |
| 31 | |
| 32 | virtual bool IsOk() const { return m_count > 0; } |
| 33 | |
| 34 | protected: |
| 35 | wxColour* m_palette; |
| 36 | wxInt32 m_count; |
| 37 | |
| 38 | friend class WXDLLIMPEXP_FWD_CORE wxPalette; |
| 39 | |
| 40 | wxDECLARE_NO_ASSIGN_CLASS(wxPaletteRefData); |
| 41 | }; |
| 42 | |
| 43 | wxPaletteRefData::wxPaletteRefData() |
| 44 | { |
| 45 | m_palette = NULL; |
| 46 | m_count = 0; |
| 47 | } |
| 48 | |
| 49 | wxPaletteRefData::wxPaletteRefData(const wxPaletteRefData& data) |
| 50 | { |
| 51 | m_count = data.m_count; |
| 52 | m_palette = new wxColour[m_count]; |
| 53 | for ( wxInt32 i = 0; i < m_count; i++ ) |
| 54 | m_palette[i] = data.m_palette[i]; |
| 55 | } |
| 56 | |
| 57 | wxPaletteRefData::~wxPaletteRefData() |
| 58 | { |
| 59 | delete[] m_palette; |
| 60 | } |
| 61 | |
| 62 | // ============================================================================ |
| 63 | // wxPalette |
| 64 | // ============================================================================ |
| 65 | |
| 66 | wxPalette::wxPalette() |
| 67 | { |
| 68 | } |
| 69 | |
| 70 | wxPalette::wxPalette(int n, const unsigned char *red, const unsigned char *green, const unsigned char *blue) |
| 71 | { |
| 72 | Create(n, red, green, blue); |
| 73 | } |
| 74 | |
| 75 | wxPalette::~wxPalette() |
| 76 | { |
| 77 | } |
| 78 | |
| 79 | bool wxPalette::Create(int n, const unsigned char *red, const unsigned char *green, const unsigned char *blue) |
| 80 | { |
| 81 | UnRef(); |
| 82 | |
| 83 | m_refData = new wxPaletteRefData; |
| 84 | |
| 85 | M_PALETTEDATA->m_count = n ; |
| 86 | M_PALETTEDATA->m_palette = new wxColour[n] ; |
| 87 | |
| 88 | for ( int i = 0 ; i < n ; ++i) |
| 89 | { |
| 90 | M_PALETTEDATA->m_palette[i].Set( red[i] , green[i] , blue[i] ) ; |
| 91 | } |
| 92 | |
| 93 | return false; |
| 94 | } |
| 95 | |
| 96 | int wxPalette::GetPixel(unsigned char red, unsigned char green, unsigned char blue) const |
| 97 | { |
| 98 | if ( !m_refData ) |
| 99 | return wxNOT_FOUND; |
| 100 | |
| 101 | long bestdiff = 3 * 256 ; |
| 102 | long bestpos = 0 ; |
| 103 | long currentdiff ; |
| 104 | |
| 105 | for ( int i = 0 ; i < M_PALETTEDATA->m_count ; ++i ) |
| 106 | { |
| 107 | const wxColour& col = M_PALETTEDATA->m_palette[i] ; |
| 108 | currentdiff = abs ( col.Red() - red ) + abs( col.Green() - green ) + abs ( col.Blue() - blue ) ; |
| 109 | if ( currentdiff < bestdiff ) |
| 110 | { |
| 111 | bestdiff = currentdiff ; |
| 112 | bestpos = i ; |
| 113 | if ( bestdiff == 0 ) |
| 114 | break ; |
| 115 | } |
| 116 | } |
| 117 | |
| 118 | return bestpos; |
| 119 | } |
| 120 | |
| 121 | bool wxPalette::GetRGB(int index, unsigned char *red, unsigned char *green, unsigned char *blue) const |
| 122 | { |
| 123 | if ( !m_refData ) |
| 124 | return false; |
| 125 | |
| 126 | if (index < 0 || index >= M_PALETTEDATA->m_count) |
| 127 | return false; |
| 128 | |
| 129 | const wxColour& col = M_PALETTEDATA->m_palette[index] ; |
| 130 | *red = col.Red() ; |
| 131 | *green = col.Green() ; |
| 132 | *blue = col.Blue() ; |
| 133 | |
| 134 | return true; |
| 135 | } |
| 136 | |
| 137 | int wxPalette::GetColoursCount() const |
| 138 | { |
| 139 | if (m_refData) |
| 140 | return M_PALETTEDATA->m_count; |
| 141 | |
| 142 | return 0; |
| 143 | } |
| 144 | |
| 145 | wxGDIRefData *wxPalette::CreateGDIRefData() const |
| 146 | { |
| 147 | return new wxPaletteRefData; |
| 148 | } |
| 149 | |
| 150 | wxGDIRefData *wxPalette::CloneGDIRefData(const wxGDIRefData *data) const |
| 151 | { |
| 152 | return new wxPaletteRefData(*static_cast<const wxPaletteRefData *>(data)); |
| 153 | } |
| 154 | |
| 155 | #endif // wxUSE_PALETTE |