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Ehm... fixed my comment about DJGPP to say what I wanted it to say
[wxWidgets.git] / src / msw / palette.cpp
1 /////////////////////////////////////////////////////////////////////////////
2 // Name: palette.cpp
3 // Purpose: wxPalette
4 // Author: Julian Smart
5 // Modified by:
6 // Created: 04/01/98
7 // RCS-ID: $Id$
8 // Copyright: (c) Julian Smart and Markus Holzem
9 // Licence: wxWindows license
10 /////////////////////////////////////////////////////////////////////////////
11
12 #ifdef __GNUG__
13 #pragma implementation "palette.h"
14 #endif
15
16 // For compilers that support precompilation, includes "wx.h".
17 #include "wx/wxprec.h"
18
19 #ifdef __BORLANDC__
20 #pragma hdrstop
21 #endif
22
23 #if wxUSE_PALETTE
24
25 #ifndef WX_PRECOMP
26 #include "wx/palette.h"
27 #endif
28
29 #include "wx/msw/private.h"
30
31 IMPLEMENT_DYNAMIC_CLASS(wxPalette, wxGDIObject)
32
33 /*
34 * Palette
35 *
36 */
37
38 wxPaletteRefData::wxPaletteRefData(void)
39 {
40 m_hPalette = 0;
41 }
42
43 wxPaletteRefData::~wxPaletteRefData(void)
44 {
45 if ( m_hPalette )
46 ::DeleteObject((HPALETTE) m_hPalette);
47 }
48
49 wxPalette::wxPalette(void)
50 {
51 }
52
53 wxPalette::wxPalette(int n, const unsigned char *red, const unsigned char *green, const unsigned char *blue)
54 {
55 Create(n, red, green, blue);
56 }
57
58 wxPalette::~wxPalette(void)
59 {
60 // FreeResource(TRUE);
61 }
62
63 bool wxPalette::FreeResource(bool WXUNUSED(force))
64 {
65 if ( M_PALETTEDATA && M_PALETTEDATA->m_hPalette)
66 {
67 DeleteObject((HPALETTE)M_PALETTEDATA->m_hPalette);
68 }
69 return TRUE;
70 }
71
72 bool wxPalette::Create(int n, const unsigned char *red, const unsigned char *green, const unsigned char *blue)
73 {
74 UnRef();
75
76 #if defined(__WXWINE__) || defined(__WXMICROWIN__)
77
78 return (FALSE);
79
80 #else
81
82 m_refData = new wxPaletteRefData;
83
84 NPLOGPALETTE npPal = (NPLOGPALETTE)LocalAlloc(LMEM_FIXED, sizeof(LOGPALETTE) +
85 (WORD)n * sizeof(PALETTEENTRY));
86 if (!npPal)
87 return(FALSE);
88
89 npPal->palVersion = 0x300;
90 npPal->palNumEntries = n;
91
92 int i;
93 for (i = 0; i < n; i ++)
94 {
95 npPal->palPalEntry[i].peRed = red[i];
96 npPal->palPalEntry[i].peGreen = green[i];
97 npPal->palPalEntry[i].peBlue = blue[i];
98 npPal->palPalEntry[i].peFlags = 0;
99 }
100 M_PALETTEDATA->m_hPalette = (WXHPALETTE) CreatePalette((LPLOGPALETTE)npPal);
101 LocalFree((HANDLE)npPal);
102 return TRUE;
103
104 #endif
105 }
106
107 int wxPalette::GetPixel(const unsigned char red, const unsigned char green, const unsigned char blue) const
108 {
109 #ifdef __WXMICROWIN__
110 return FALSE;
111 #else
112 if ( !m_refData )
113 return FALSE;
114
115 return ::GetNearestPaletteIndex((HPALETTE) M_PALETTEDATA->m_hPalette, PALETTERGB(red, green, blue));
116 #endif
117 }
118
119 bool wxPalette::GetRGB(int index, unsigned char *red, unsigned char *green, unsigned char *blue) const
120 {
121 #ifdef __WXMICROWIN__
122 return FALSE;
123 #else
124 if ( !m_refData )
125 return FALSE;
126
127 if (index < 0 || index > 255)
128 return FALSE;
129
130 PALETTEENTRY entry;
131 if (::GetPaletteEntries((HPALETTE) M_PALETTEDATA->m_hPalette, index, 1, &entry))
132 {
133 *red = entry.peRed;
134 *green = entry.peGreen;
135 *blue = entry.peBlue;
136 return TRUE;
137 } else
138 return FALSE;
139 #endif
140 }
141
142 void wxPalette::SetHPALETTE(WXHPALETTE pal)
143 {
144 if ( !m_refData )
145 m_refData = new wxPaletteRefData;
146
147 M_PALETTEDATA->m_hPalette = pal;
148 }
149
150 #endif // wxUSE_PALETTE
151