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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
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5// Modified by:
6// Created: 10.13.04
e2731512 7// RCS-ID: $Id$
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8// Copyright: (c) William Osborne
9// License: wxWindows licence
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
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27#if wxUSE_WXDIB
28
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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"
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35#endif //WX_PRECOMP
36
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37#include "wx/file.h"
38
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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
47static 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
55static 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
73bool wxDIB::Create(int width, int height, int depth)
74{
75 return false;
76}
77
78bool wxDIB::Create(const wxBitmap& bmp)
79{
80 return false;
81}
82
83bool wxDIB::CopyFromDDB(HBITMAP hbmp)
84{
85 return false;
86}
87
88
89// ----------------------------------------------------------------------------
90// Loading/saving the DIBs
91// ----------------------------------------------------------------------------
92
93bool wxDIB::Load(const wxString& filename)
94{
95 return false;
96}
97
98bool wxDIB::Save(const wxString& filename)
99{
100 return false;
101}
102
103// ----------------------------------------------------------------------------
104// wxDIB accessors
105// ----------------------------------------------------------------------------
106
107void wxDIB::DoGetObject() const
108{
109}
110
111// ----------------------------------------------------------------------------
112// DDB <-> DIB conversions
113// ----------------------------------------------------------------------------
114
115HBITMAP wxDIB::CreateDDB(HDC hdc) const
116{
117 return 0;
118}
119
120/* static */
121HBITMAP wxDIB::ConvertToBitmap(const BITMAPINFO *pbmi, HDC hdc, void *bits)
122{
123 return 0;
124}
125
126/* static */
127size_t wxDIB::ConvertFromBitmap(BITMAPINFO *pbi, HBITMAP hbmp)
128{
129 return 0;
130}
131
132/* static */
133HGLOBAL wxDIB::ConvertFromBitmap(HBITMAP hbmp)
134{
135 return NULL;
136}
137
138// ----------------------------------------------------------------------------
139// palette support
140// ----------------------------------------------------------------------------
141
142#if wxUSE_PALETTE
143
144wxPalette *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
157bool wxDIB::Create(const wxImage& image)
158{
159 return false;
160}
161
162wxImage wxDIB::ConvertToImage() const
163{
164 return wxNullImage;
165}
166
167#endif // wxUSE_IMAGE
168
169#endif // wxUSE_WXDIB