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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 | |
9 | // Licence: wxWindows licence | |
10 | ///////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) | |
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(__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 0; | |
111 | #else | |
112 | if ( !m_refData ) | |
113 | return 0; | |
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 |