include/wx/imagbmp.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        imagbmp.h
   3 // Purpose:     wxImage BMP, ICO and CUR 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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  14 #pragma interface "imagbmp.h"
  15 #endif
  16
  17 #include "wx/image.h"
  18
  19 // defines for saving the BMP file in different formats, Bits Per Pixel
  20 // USE: wximage.SetOption( wxIMAGE_OPTION_BMP_FORMAT, wxBMP_xBPP );
  21 #define wxIMAGE_OPTION_BMP_FORMAT wxString(_T("wxBMP_FORMAT"))
  22
  23 // These two options are filled in upon reading CUR file and can (should) be
  24 // specified when saving a CUR file - they define the hotspot of the cursor:
  25 #define wxIMAGE_OPTION_CUR_HOTSPOT_X  wxT("HotSpotX")
  26 #define wxIMAGE_OPTION_CUR_HOTSPOT_Y  wxT("HotSpotY")
  27
  28 #if WXWIN_COMPATIBILITY_2_4
  29     // Do not use these macros, they are deprecated
  30     #define wxBMP_FORMAT    wxIMAGE_OPTION_BMP_FORMAT
  31     #define wxCUR_HOTSPOT_X wxIMAGE_OPTION_CUR_HOTSPOT_X
  32     #define wxCUR_HOTSPOT_Y wxIMAGE_OPTION_CUR_HOTSPOT_Y
  33 #endif
  34
  35
  36 enum
  37 {
  38     wxBMP_24BPP        = 24, // default, do not need to set
  39     //wxBMP_16BPP      = 16, // wxQuantize can only do 236 colors?
  40     wxBMP_8BPP         =  8, // 8bpp, quantized colors
  41     wxBMP_8BPP_GREY    =  9, // 8bpp, rgb averaged to greys
  42     wxBMP_8BPP_GRAY    =  wxBMP_8BPP_GREY,
  43     wxBMP_8BPP_RED     = 10, // 8bpp, red used as greyscale
  44     wxBMP_8BPP_PALETTE = 11, // 8bpp, use the wxImage's palette
  45     wxBMP_4BPP         =  4, // 4bpp, quantized colors
  46     wxBMP_1BPP         =  1, // 1bpp, quantized "colors"
  47     wxBMP_1BPP_BW      =  2  // 1bpp, black & white from red
  48 };
  49
  50 // ----------------------------------------------------------------------------
  51 // wxBMPHandler
  52 // ----------------------------------------------------------------------------
  53
  54 class WXDLLEXPORT wxBMPHandler : public wxImageHandler
  55 {
  56 public:
  57     wxBMPHandler()
  58     {
  59         m_name = _T("Windows bitmap file");
  60         m_extension = _T("bmp");
  61         m_type = wxBITMAP_TYPE_BMP;
  62         m_mime = _T("image/x-bmp");
  63     };
  64
  65 #if wxUSE_STREAMS
  66     virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=true );
  67     virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=true, int index=-1 );
  68     virtual bool DoCanRead( wxInputStream& stream );
  69
  70 protected:
  71     bool SaveDib(wxImage *image, wxOutputStream& stream, bool verbose,
  72                  bool IsBmp, bool IsMask);
  73     bool DoLoadDib(wxImage *image, int width, int height, int bpp, int ncolors,
  74                    int comp, off_t bmpOffset, wxInputStream& stream,
  75                    bool verbose, bool IsBmp, bool hasPalette);
  76     bool LoadDib(wxImage *image, wxInputStream& stream, bool verbose, bool IsBmp);
  77 #endif // wxUSE_STREAMS
  78
  79 private:
  80      DECLARE_DYNAMIC_CLASS(wxBMPHandler)
  81 };
  82
  83 #if wxUSE_ICO_CUR
  84 // ----------------------------------------------------------------------------
  85 // wxICOHandler
  86 // ----------------------------------------------------------------------------
  87
  88 class WXDLLEXPORT wxICOHandler : public wxBMPHandler
  89 {
  90 public:
  91     wxICOHandler()
  92     {
  93         m_name = _T("Windows icon file");
  94         m_extension = _T("ico");
  95         m_type = wxBITMAP_TYPE_ICO;
  96         m_mime = _T("image/x-ico");
  97     };
  98
  99 #if wxUSE_STREAMS
 100     virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=true );
 101     virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=true, int index=-1 );
 102     virtual bool DoLoadFile( wxImage *image, wxInputStream& stream, bool verbose, int index );
 103     virtual bool DoCanRead( wxInputStream& stream );
 104     virtual int GetImageCount( wxInputStream& stream );
 105 #endif // wxUSE_STREAMS
 106
 107 private:
 108     DECLARE_DYNAMIC_CLASS(wxICOHandler)
 109 };
 110
 111
 112 // ----------------------------------------------------------------------------
 113 // wxCURHandler
 114 // ----------------------------------------------------------------------------
 115
 116 class WXDLLEXPORT wxCURHandler : public wxICOHandler
 117 {
 118 public:
 119     wxCURHandler()
 120     {
 121         m_name = _T("Windows cursor file");
 122         m_extension = _T("cur");
 123         m_type = wxBITMAP_TYPE_CUR;
 124         m_mime = _T("image/x-cur");
 125     };
 126
 127     // VS: This handler's meat is implemented inside wxICOHandler (the two
 128     //     formats are almost identical), but we hide this fact at
 129     //     the API level, since it is a mere implementation detail.
 130
 131 #if wxUSE_STREAMS
 132     virtual bool DoCanRead( wxInputStream& stream );
 133 #endif // wxUSE_STREAMS
 134
 135 private:
 136     DECLARE_DYNAMIC_CLASS(wxCURHandler)
 137 };
 138 // ----------------------------------------------------------------------------
 139 // wxANIHandler
 140 // ----------------------------------------------------------------------------
 141
 142 class WXDLLEXPORT wxANIHandler : public wxCURHandler
 143 {
 144 public:
 145     wxANIHandler()
 146     {
 147         m_name = _T("Windows animated cursor file");
 148         m_extension = _T("ani");
 149         m_type = wxBITMAP_TYPE_ANI;
 150         m_mime = _T("image/x-ani");
 151     };
 152
 153
 154 #if wxUSE_STREAMS
 155     virtual bool SaveFile( wxImage *WXUNUSED(image), wxOutputStream& WXUNUSED(stream), bool WXUNUSED(verbose=true) ){return false ;};
 156     virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=true, int index=-1 );
 157     virtual bool DoCanRead( wxInputStream& stream );
 158     virtual int GetImageCount( wxInputStream& stream );
 159 #endif // wxUSE_STREAMS
 160
 161 private:
 162     DECLARE_DYNAMIC_CLASS(wxANIHandler)
 163 };
 164
 165 #endif // wxUSE_ICO_CUR
 166 #endif // _WX_IMAGBMP_H_