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