include/wx/gtk/bitmap.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/gtk/bitmap.h
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // RCS-ID:      $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifndef _WX_GTK_BITMAP_H_
  11 #define _WX_GTK_BITMAP_H_
  12
  13 typedef struct _GdkPixbuf GdkPixbuf;
  14 class WXDLLIMPEXP_FWD_CORE wxPixelDataBase;
  15
  16 //-----------------------------------------------------------------------------
  17 // wxMask
  18 //-----------------------------------------------------------------------------
  19
  20 class WXDLLIMPEXP_CORE wxMask: public wxObject
  21 {
  22 public:
  23     wxMask();
  24     wxMask( const wxBitmap& bitmap, const wxColour& colour );
  25 #if wxUSE_PALETTE
  26     wxMask( const wxBitmap& bitmap, int paletteIndex );
  27 #endif // wxUSE_PALETTE
  28     wxMask( const wxBitmap& bitmap );
  29     virtual ~wxMask();
  30
  31     bool Create( const wxBitmap& bitmap, const wxColour& colour );
  32 #if wxUSE_PALETTE
  33     bool Create( const wxBitmap& bitmap, int paletteIndex );
  34 #endif // wxUSE_PALETTE
  35     bool Create( const wxBitmap& bitmap );
  36
  37     // implementation
  38     GdkBitmap   *m_bitmap;
  39
  40     GdkBitmap *GetBitmap() const;
  41
  42 private:
  43     DECLARE_DYNAMIC_CLASS(wxMask)
  44 };
  45
  46 //-----------------------------------------------------------------------------
  47 // wxBitmap
  48 //-----------------------------------------------------------------------------
  49
  50 class WXDLLIMPEXP_CORE wxBitmap: public wxBitmapBase
  51 {
  52 public:
  53     wxBitmap() { }
  54     wxBitmap( int width, int height, int depth = -1 );
  55     wxBitmap( const char bits[], int width, int height, int depth = 1 );
  56     wxBitmap( const char* const* bits );
  57 #ifdef wxNEEDS_CHARPP
  58     // needed for old GCC
  59     wxBitmap(char** data)
  60     {
  61         *this = wxBitmap(wx_const_cast(const char* const*, data));
  62     }
  63 #endif
  64     wxBitmap( const wxString &filename, wxBitmapType type = wxBITMAP_TYPE_XPM );
  65 #if wxUSE_IMAGE
  66     wxBitmap( const wxImage& image, int depth = -1 ) { (void)CreateFromImage(image, depth); }
  67 #endif // wxUSE_IMAGE
  68     virtual ~wxBitmap();
  69     bool Ok() const { return IsOk(); }
  70     bool IsOk() const;
  71
  72     bool Create(int width, int height, int depth = -1);
  73
  74     int GetHeight() const;
  75     int GetWidth() const;
  76     int GetDepth() const;
  77
  78 #if wxUSE_IMAGE
  79     wxImage ConvertToImage() const;
  80 #endif // wxUSE_IMAGE
  81
  82     // copies the contents and mask of the given (colour) icon to the bitmap
  83     virtual bool CopyFromIcon(const wxIcon& icon);
  84
  85     wxMask *GetMask() const;
  86     void SetMask( wxMask *mask );
  87
  88     wxBitmap GetSubBitmap( const wxRect& rect ) const;
  89
  90     bool SaveFile(const wxString &name, wxBitmapType type,
  91                           const wxPalette *palette = (wxPalette *)NULL) const;
  92     bool LoadFile(const wxString &name, wxBitmapType type = wxBITMAP_TYPE_XPM );
  93
  94 #if wxUSE_PALETTE
  95     wxPalette *GetPalette() const;
  96     void SetPalette(const wxPalette& palette);
  97     wxPalette *GetColourMap() const { return GetPalette(); };
  98 #endif // wxUSE_PALETTE
  99
 100     static void InitStandardHandlers();
 101
 102     // implementation
 103     // --------------
 104
 105     void SetHeight( int height );
 106     void SetWidth( int width );
 107     void SetDepth( int depth );
 108     void SetPixmap( GdkPixmap *pixmap );
 109     void SetPixbuf(GdkPixbuf* pixbuf, int depth = 0);
 110
 111     GdkPixmap *GetPixmap() const;
 112     bool HasPixmap() const;
 113     bool HasPixbuf() const;
 114     GdkPixbuf *GetPixbuf() const;
 115
 116     // Basically, this corresponds to Win32 StretchBlt()
 117     wxBitmap Rescale(int clipx, int clipy, int clipwidth, int clipheight, int width, int height) const;
 118
 119     // raw bitmap access support functions
 120     void *GetRawData(wxPixelDataBase& data, int bpp);
 121     void UngetRawData(wxPixelDataBase& data);
 122
 123     bool HasAlpha() const;
 124
 125 protected:
 126 #if wxUSE_IMAGE
 127     bool CreateFromImage(const wxImage& image, int depth);
 128 #endif // wxUSE_IMAGE
 129
 130     virtual wxObjectRefData* CreateRefData() const;
 131     virtual wxObjectRefData* CloneRefData(const wxObjectRefData* data) const;
 132
 133 private:
 134 #if wxUSE_IMAGE
 135     // to be called from CreateFromImage only!
 136     bool CreateFromImageAsPixmap(const wxImage& image, int depth);
 137     bool CreateFromImageAsPixbuf(const wxImage& image);
 138 #endif // wxUSE_IMAGE
 139
 140     enum Representation
 141     {
 142         Pixmap,
 143         Pixbuf
 144     };
 145     // removes other representations from memory, keeping only 'keep'
 146     // (wxBitmap may keep same bitmap e.g. as both pixmap and pixbuf):
 147     void PurgeOtherRepresentations(Representation keep);
 148
 149     friend class wxMemoryDC;
 150     friend class wxBitmapHandler;
 151
 152 private:
 153     DECLARE_DYNAMIC_CLASS(wxBitmap)
 154 };
 155
 156 //-----------------------------------------------------------------------------
 157 // wxBitmapHandler
 158 //-----------------------------------------------------------------------------
 159
 160 class WXDLLIMPEXP_CORE wxBitmapHandler: public wxBitmapHandlerBase
 161 {
 162     DECLARE_ABSTRACT_CLASS(wxBitmapHandler)
 163 };
 164
 165 #endif // _WX_GTK_BITMAP_H_