| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: palette.cpp |
| 3 | // Purpose: wxPalette |
| 4 | // Author: AUTHOR |
| 5 | // Modified by: |
| 6 | // Created: ??/??/98 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) AUTHOR |
| 9 | // Licence: wxWindows licence |
| 10 | ///////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | #ifdef __GNUG__ |
| 13 | #pragma implementation "palette.h" |
| 14 | #endif |
| 15 | |
| 16 | #include "wx/defs.h" |
| 17 | |
| 18 | #if wxUSE_PALETTE |
| 19 | |
| 20 | #include "wx/palette.h" |
| 21 | |
| 22 | #if !USE_SHARED_LIBRARIES |
| 23 | IMPLEMENT_DYNAMIC_CLASS(wxPalette, wxGDIObject) |
| 24 | #endif |
| 25 | |
| 26 | /* |
| 27 | * Palette |
| 28 | * |
| 29 | */ |
| 30 | |
| 31 | wxPaletteRefData::wxPaletteRefData() |
| 32 | { |
| 33 | m_palette = NULL ; |
| 34 | m_count = 0 ; |
| 35 | } |
| 36 | |
| 37 | wxPaletteRefData::~wxPaletteRefData() |
| 38 | { |
| 39 | delete[] m_palette ; |
| 40 | } |
| 41 | |
| 42 | wxPalette::wxPalette() |
| 43 | { |
| 44 | } |
| 45 | |
| 46 | wxPalette::wxPalette(int n, const unsigned char *red, const unsigned char *green, const unsigned char *blue) |
| 47 | { |
| 48 | Create(n, red, green, blue); |
| 49 | } |
| 50 | |
| 51 | wxPalette::~wxPalette() |
| 52 | { |
| 53 | } |
| 54 | |
| 55 | bool wxPalette::Create(int n, const unsigned char *red, const unsigned char *green, const unsigned char *blue) |
| 56 | { |
| 57 | UnRef(); |
| 58 | |
| 59 | m_refData = new wxPaletteRefData; |
| 60 | |
| 61 | M_PALETTEDATA->m_count = n ; |
| 62 | M_PALETTEDATA->m_palette = new wxColour[n] ; |
| 63 | |
| 64 | for ( int i = 0 ; i < n ; ++i) |
| 65 | { |
| 66 | M_PALETTEDATA->m_palette[i].Set( red[i] , green[i] , blue[i] ) ; |
| 67 | } |
| 68 | |
| 69 | return FALSE; |
| 70 | } |
| 71 | |
| 72 | int wxPalette::GetPixel(const unsigned char red, const unsigned char green, const unsigned char blue) const |
| 73 | { |
| 74 | if ( !m_refData ) |
| 75 | return -1; |
| 76 | |
| 77 | long bestdiff = 3 * 256 ; |
| 78 | long bestpos = 0 ; |
| 79 | long currentdiff ; |
| 80 | |
| 81 | for ( int i = 0 ; i < M_PALETTEDATA->m_count ; ++i ) |
| 82 | { |
| 83 | const wxColour& col = &M_PALETTEDATA->m_palette[i] ; |
| 84 | currentdiff = abs ( col.Red() - red ) + abs( col.Green() - green ) + abs ( col.Blue() - blue ) ; |
| 85 | if ( currentdiff < bestdiff ) |
| 86 | { |
| 87 | bestdiff = currentdiff ; |
| 88 | bestpos = i ; |
| 89 | if ( bestdiff == 0 ) |
| 90 | break ; |
| 91 | } |
| 92 | } |
| 93 | |
| 94 | return bestpos; |
| 95 | } |
| 96 | |
| 97 | bool wxPalette::GetRGB(int index, unsigned char *red, unsigned char *green, unsigned char *blue) const |
| 98 | { |
| 99 | if ( !m_refData ) |
| 100 | return FALSE; |
| 101 | |
| 102 | if (index < 0 || index >= M_PALETTEDATA->m_count) |
| 103 | return FALSE; |
| 104 | |
| 105 | const wxColour& col = &M_PALETTEDATA->m_palette[index] ; |
| 106 | *red = col.Red() ; |
| 107 | *green = col.Green() ; |
| 108 | *blue = col.Blue() ; |
| 109 | |
| 110 | return TRUE; |
| 111 | } |
| 112 | |
| 113 | #endif |
| 114 | // wxUSE_PALETTE |
| 115 | |