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 = wxBITMAP_SCREEN_DEPTH );
  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     { *this = wxBitmap(wx_const_cast(const char* const*, data)); }
  61 #endif
  62     wxBitmap( const wxString &filename, wxBitmapType type = wxBITMAP_DEFAULT_TYPE );
  63 #if wxUSE_IMAGE
  64     wxBitmap( const wxImage& image, int depth = wxBITMAP_SCREEN_DEPTH )
  65         { (void)CreateFromImage(image, depth); }
  66 #endif // wxUSE_IMAGE
  67     virtual ~wxBitmap();
  68
  69     bool Create(int width, int height, int depth = wxBITMAP_SCREEN_DEPTH);
  70
  71     virtual int GetHeight() const;
  72     virtual int GetWidth() const;
  73     virtual int GetDepth() const;
  74
  75 #if wxUSE_IMAGE
  76     wxImage ConvertToImage() const;
  77 #endif // wxUSE_IMAGE
  78
  79     // copies the contents and mask of the given (colour) icon to the bitmap
  80     virtual bool CopyFromIcon(const wxIcon& icon);
  81
  82     wxMask *GetMask() const;
  83     void SetMask( wxMask *mask );
  84
  85     wxBitmap GetSubBitmap( const wxRect& rect ) const;
  86
  87     bool SaveFile(const wxString &name, wxBitmapType type,
  88                           const wxPalette *palette = (wxPalette *)NULL) const;
  89     bool LoadFile(const wxString &name, wxBitmapType type = wxBITMAP_DEFAULT_TYPE);
  90
  91 #if wxUSE_PALETTE
  92     wxPalette *GetPalette() const;
  93     void SetPalette(const wxPalette& palette);
  94     wxPalette *GetColourMap() const { return GetPalette(); };
  95 #endif // wxUSE_PALETTE
  96
  97     static void InitStandardHandlers();
  98
  99     // implementation
 100     // --------------
 101
 102     void SetHeight( int height );
 103     void SetWidth( int width );
 104     void SetDepth( int depth );
 105     void SetPixmap( GdkPixmap *pixmap );
 106     void SetPixbuf(GdkPixbuf* pixbuf, int depth = 0);
 107
 108     GdkPixmap *GetPixmap() const;
 109     bool HasPixmap() const;
 110     bool HasPixbuf() const;
 111     GdkPixbuf *GetPixbuf() const;
 112
 113     // Basically, this corresponds to Win32 StretchBlt()
 114     wxBitmap Rescale(int clipx, int clipy, int clipwidth, int clipheight,
 115                      int width, int height) const;
 116
 117     // raw bitmap access support functions
 118     void *GetRawData(wxPixelDataBase& data, int bpp);
 119     void UngetRawData(wxPixelDataBase& data);
 120
 121     bool HasAlpha() const;
 122
 123 protected:
 124 #if wxUSE_IMAGE
 125     bool CreateFromImage(const wxImage& image, int depth);
 126 #endif // wxUSE_IMAGE
 127
 128     virtual wxGDIRefData* CreateGDIRefData() const;
 129     virtual wxGDIRefData* CloneGDIRefData(const wxGDIRefData* data) const;
 130
 131 private:
 132 #if wxUSE_IMAGE
 133     // to be called from CreateFromImage only!
 134     bool CreateFromImageAsPixmap(const wxImage& image, int depth);
 135     bool CreateFromImageAsPixbuf(const wxImage& image);
 136 #endif // wxUSE_IMAGE
 137
 138 public:
 139     // implementation only
 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 private:
 150     DECLARE_DYNAMIC_CLASS(wxBitmap)
 151 };
 152
 153 #endif // _WX_GTK_BITMAP_H_