]> git.saurik.com Git - wxWidgets.git/blame_incremental - include/wx/imagbmp.h
fixing overrelease and out-of-bounds write, fixes #13725
[wxWidgets.git] / include / wx / imagbmp.h
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1/////////////////////////////////////////////////////////////////////////////
2// Name: wx/imagbmp.h
3// Purpose: wxImage BMP, ICO, CUR and ANI handlers
4// Author: Robert Roebling, Chris Elliott
5// RCS-ID: $Id$
6// Copyright: (c) Robert Roebling, Chris Elliott
7// Licence: wxWindows licence
8/////////////////////////////////////////////////////////////////////////////
9
10#ifndef _WX_IMAGBMP_H_
11#define _WX_IMAGBMP_H_
12
13#include "wx/image.h"
14
15// defines for saving the BMP file in different formats, Bits Per Pixel
16// USE: wximage.SetOption( wxIMAGE_OPTION_BMP_FORMAT, wxBMP_xBPP );
17#define wxIMAGE_OPTION_BMP_FORMAT wxString(wxT("wxBMP_FORMAT"))
18
19// These two options are filled in upon reading CUR file and can (should) be
20// specified when saving a CUR file - they define the hotspot of the cursor:
21#define wxIMAGE_OPTION_CUR_HOTSPOT_X wxT("HotSpotX")
22#define wxIMAGE_OPTION_CUR_HOTSPOT_Y wxT("HotSpotY")
23
24
25enum
26{
27 wxBMP_24BPP = 24, // default, do not need to set
28 //wxBMP_16BPP = 16, // wxQuantize can only do 236 colors?
29 wxBMP_8BPP = 8, // 8bpp, quantized colors
30 wxBMP_8BPP_GREY = 9, // 8bpp, rgb averaged to greys
31 wxBMP_8BPP_GRAY = wxBMP_8BPP_GREY,
32 wxBMP_8BPP_RED = 10, // 8bpp, red used as greyscale
33 wxBMP_8BPP_PALETTE = 11, // 8bpp, use the wxImage's palette
34 wxBMP_4BPP = 4, // 4bpp, quantized colors
35 wxBMP_1BPP = 1, // 1bpp, quantized "colors"
36 wxBMP_1BPP_BW = 2 // 1bpp, black & white from red
37};
38
39// ----------------------------------------------------------------------------
40// wxBMPHandler
41// ----------------------------------------------------------------------------
42
43class WXDLLIMPEXP_CORE wxBMPHandler : public wxImageHandler
44{
45public:
46 wxBMPHandler()
47 {
48 m_name = wxT("Windows bitmap file");
49 m_extension = wxT("bmp");
50 m_type = wxBITMAP_TYPE_BMP;
51 m_mime = wxT("image/x-bmp");
52 }
53
54#if wxUSE_STREAMS
55 virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=true );
56 virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=true, int index=-1 );
57
58protected:
59 virtual bool DoCanRead( wxInputStream& stream );
60 bool SaveDib(wxImage *image, wxOutputStream& stream, bool verbose,
61 bool IsBmp, bool IsMask);
62 bool DoLoadDib(wxImage *image, int width, int height, int bpp, int ncolors,
63 int comp, wxFileOffset bmpOffset, wxInputStream& stream,
64 bool verbose, bool IsBmp, bool hasPalette);
65 bool LoadDib(wxImage *image, wxInputStream& stream, bool verbose, bool IsBmp);
66#endif // wxUSE_STREAMS
67
68private:
69 DECLARE_DYNAMIC_CLASS(wxBMPHandler)
70};
71
72#if wxUSE_ICO_CUR
73// ----------------------------------------------------------------------------
74// wxICOHandler
75// ----------------------------------------------------------------------------
76
77class WXDLLIMPEXP_CORE wxICOHandler : public wxBMPHandler
78{
79public:
80 wxICOHandler()
81 {
82 m_name = wxT("Windows icon file");
83 m_extension = wxT("ico");
84 m_type = wxBITMAP_TYPE_ICO;
85 m_mime = wxT("image/x-ico");
86 }
87
88#if wxUSE_STREAMS
89 virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=true );
90 virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=true, int index=-1 );
91 virtual bool DoLoadFile( wxImage *image, wxInputStream& stream, bool verbose, int index );
92
93protected:
94 virtual int DoGetImageCount( wxInputStream& stream );
95 virtual bool DoCanRead( wxInputStream& stream );
96#endif // wxUSE_STREAMS
97
98private:
99 DECLARE_DYNAMIC_CLASS(wxICOHandler)
100};
101
102
103// ----------------------------------------------------------------------------
104// wxCURHandler
105// ----------------------------------------------------------------------------
106
107class WXDLLIMPEXP_CORE wxCURHandler : public wxICOHandler
108{
109public:
110 wxCURHandler()
111 {
112 m_name = wxT("Windows cursor file");
113 m_extension = wxT("cur");
114 m_type = wxBITMAP_TYPE_CUR;
115 m_mime = wxT("image/x-cur");
116 }
117
118 // VS: This handler's meat is implemented inside wxICOHandler (the two
119 // formats are almost identical), but we hide this fact at
120 // the API level, since it is a mere implementation detail.
121
122protected:
123#if wxUSE_STREAMS
124 virtual bool DoCanRead( wxInputStream& stream );
125#endif // wxUSE_STREAMS
126
127private:
128 DECLARE_DYNAMIC_CLASS(wxCURHandler)
129};
130// ----------------------------------------------------------------------------
131// wxANIHandler
132// ----------------------------------------------------------------------------
133
134class WXDLLIMPEXP_CORE wxANIHandler : public wxCURHandler
135{
136public:
137 wxANIHandler()
138 {
139 m_name = wxT("Windows animated cursor file");
140 m_extension = wxT("ani");
141 m_type = wxBITMAP_TYPE_ANI;
142 m_mime = wxT("image/x-ani");
143 }
144
145
146#if wxUSE_STREAMS
147 virtual bool SaveFile( wxImage *WXUNUSED(image), wxOutputStream& WXUNUSED(stream), bool WXUNUSED(verbose=true) ){return false ;}
148 virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=true, int index=-1 );
149
150protected:
151 virtual int DoGetImageCount( wxInputStream& stream );
152 virtual bool DoCanRead( wxInputStream& stream );
153#endif // wxUSE_STREAMS
154
155private:
156 DECLARE_DYNAMIC_CLASS(wxANIHandler)
157};
158
159#endif // wxUSE_ICO_CUR
160#endif // _WX_IMAGBMP_H_