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1 | /////////////////////////////////////////////////////////////////////////////// |
2 | // Name: src/palmos/dib.cpp | |
3 | // Purpose: implements wxDIB class | |
e2731512 | 4 | // Author: William Osborne - minimal working wxPalmOS port |
ffecfa5a JS |
5 | // Modified by: |
6 | // Created: 10.13.04 | |
e2731512 | 7 | // RCS-ID: $Id$ |
ffecfa5a | 8 | // Copyright: (c) William Osborne |
526954c5 | 9 | // Licence: wxWindows licence |
ffecfa5a JS |
10 | /////////////////////////////////////////////////////////////////////////////// |
11 | ||
12 | // ============================================================================ | |
13 | // declarations | |
14 | // ============================================================================ | |
15 | ||
16 | // ---------------------------------------------------------------------------- | |
17 | // headers | |
18 | // ---------------------------------------------------------------------------- | |
19 | ||
20 | // For compilers that support precompilation, includes "wx.h". | |
21 | #include "wx/wxprec.h" | |
22 | ||
23 | #ifdef __BORLANDC__ | |
24 | #pragma hdrstop | |
25 | #endif | |
26 | ||
88a7a4e1 WS |
27 | #if wxUSE_WXDIB |
28 | ||
ffecfa5a JS |
29 | #ifndef WX_PRECOMP |
30 | #include "wx/string.h" | |
31 | #include "wx/log.h" | |
88a7a4e1 | 32 | #include "wx/intl.h" |
0bca0373 | 33 | #include "wx/bitmap.h" |
155ecd4c | 34 | #include "wx/image.h" |
ffecfa5a JS |
35 | #endif //WX_PRECOMP |
36 | ||
ffecfa5a JS |
37 | #include "wx/file.h" |
38 | ||
ffecfa5a JS |
39 | #include "wx/palmos/dib.h" |
40 | ||
41 | // ---------------------------------------------------------------------------- | |
42 | // private functions | |
43 | // ---------------------------------------------------------------------------- | |
44 | ||
45 | // calculate the number of palette entries needed for the bitmap with this | |
46 | // number of bits per pixel | |
47 | static inline WORD GetNumberOfColours(WORD bitsPerPixel) | |
48 | { | |
49 | // only 1, 4 and 8bpp bitmaps use palettes (well, they could be used with | |
50 | // 24bpp ones too but we don't support this as I think it's quite uncommon) | |
51 | return bitsPerPixel <= 8 ? 1 << bitsPerPixel : 0; | |
52 | } | |
53 | ||
54 | // wrapper around ::GetObject() for DIB sections | |
55 | static inline bool GetDIBSection(HBITMAP hbmp, DIBSECTION *ds) | |
56 | { | |
57 | // note that at least under Win9x (this doesn't seem to happen under Win2K | |
58 | // but this doesn't mean anything, of course), GetObject() may return | |
59 | // sizeof(DIBSECTION) for a bitmap which is *not* a DIB section and the way | |
60 | // to check for it is by looking at the bits pointer | |
61 | return ::GetObject(hbmp, sizeof(DIBSECTION), ds) == sizeof(DIBSECTION) && | |
62 | ds->dsBm.bmBits; | |
63 | } | |
64 | ||
65 | // ============================================================================ | |
66 | // implementation | |
67 | // ============================================================================ | |
68 | ||
69 | // ---------------------------------------------------------------------------- | |
70 | // wxDIB creation | |
71 | // ---------------------------------------------------------------------------- | |
72 | ||
73 | bool wxDIB::Create(int width, int height, int depth) | |
74 | { | |
75 | return false; | |
76 | } | |
77 | ||
78 | bool wxDIB::Create(const wxBitmap& bmp) | |
79 | { | |
80 | return false; | |
81 | } | |
82 | ||
83 | bool wxDIB::CopyFromDDB(HBITMAP hbmp) | |
84 | { | |
85 | return false; | |
86 | } | |
87 | ||
88 | ||
89 | // ---------------------------------------------------------------------------- | |
90 | // Loading/saving the DIBs | |
91 | // ---------------------------------------------------------------------------- | |
92 | ||
93 | bool wxDIB::Load(const wxString& filename) | |
94 | { | |
95 | return false; | |
96 | } | |
97 | ||
98 | bool wxDIB::Save(const wxString& filename) | |
99 | { | |
100 | return false; | |
101 | } | |
102 | ||
103 | // ---------------------------------------------------------------------------- | |
104 | // wxDIB accessors | |
105 | // ---------------------------------------------------------------------------- | |
106 | ||
107 | void wxDIB::DoGetObject() const | |
108 | { | |
109 | } | |
110 | ||
111 | // ---------------------------------------------------------------------------- | |
112 | // DDB <-> DIB conversions | |
113 | // ---------------------------------------------------------------------------- | |
114 | ||
115 | HBITMAP wxDIB::CreateDDB(HDC hdc) const | |
116 | { | |
117 | return 0; | |
118 | } | |
119 | ||
120 | /* static */ | |
121 | HBITMAP wxDIB::ConvertToBitmap(const BITMAPINFO *pbmi, HDC hdc, void *bits) | |
122 | { | |
123 | return 0; | |
124 | } | |
125 | ||
126 | /* static */ | |
127 | size_t wxDIB::ConvertFromBitmap(BITMAPINFO *pbi, HBITMAP hbmp) | |
128 | { | |
129 | return 0; | |
130 | } | |
131 | ||
132 | /* static */ | |
133 | HGLOBAL wxDIB::ConvertFromBitmap(HBITMAP hbmp) | |
134 | { | |
135 | return NULL; | |
136 | } | |
137 | ||
138 | // ---------------------------------------------------------------------------- | |
139 | // palette support | |
140 | // ---------------------------------------------------------------------------- | |
141 | ||
142 | #if wxUSE_PALETTE | |
143 | ||
144 | wxPalette *wxDIB::CreatePalette() const | |
145 | { | |
146 | return NULL; | |
147 | } | |
148 | ||
149 | #endif // wxUSE_PALETTE | |
150 | ||
151 | // ---------------------------------------------------------------------------- | |
152 | // wxImage support | |
153 | // ---------------------------------------------------------------------------- | |
154 | ||
155 | #if wxUSE_IMAGE | |
156 | ||
157 | bool wxDIB::Create(const wxImage& image) | |
158 | { | |
159 | return false; | |
160 | } | |
161 | ||
162 | wxImage wxDIB::ConvertToImage() const | |
163 | { | |
164 | return wxNullImage; | |
165 | } | |
166 | ||
167 | #endif // wxUSE_IMAGE | |
168 | ||
169 | #endif // wxUSE_WXDIB |