include/wx/bitmap.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/bitmap.h
   3 // Purpose:     wxBitmap class interface
   4 // Author:      Vaclav Slavik
   5 // Modified by:
   6 // Created:     22.04.01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWidgets team
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_BITMAP_H_BASE_
  13 #define _WX_BITMAP_H_BASE_
  14
  15 // ----------------------------------------------------------------------------
  16 // headers
  17 // ----------------------------------------------------------------------------
  18
  19 #include "wx/string.h"
  20 #include "wx/gdicmn.h"  // for wxBitmapType
  21 #include "wx/colour.h"
  22
  23 class WXDLLEXPORT wxBitmap;
  24 class WXDLLEXPORT wxBitmapHandler;
  25 class WXDLLEXPORT wxIcon;
  26 class WXDLLEXPORT wxImage;
  27 class WXDLLEXPORT wxMask;
  28 class WXDLLEXPORT wxPalette;
  29
  30 // ----------------------------------------------------------------------------
  31 // wxVariant support
  32 // ----------------------------------------------------------------------------
  33
  34 #if wxUSE_VARIANT
  35 #include "wx/variant.h"
  36 DECLARE_VARIANT_OBJECT_EXPORTED(wxBitmap,WXDLLEXPORT)
  37 #endif
  38
  39 // ----------------------------------------------------------------------------
  40 // wxMask represents the transparent area of the bitmap
  41 // ----------------------------------------------------------------------------
  42
  43 class WXDLLEXPORT wxMaskBase : public wxObject
  44 {
  45 public:
  46     // create the mask from bitmap pixels of the given colour
  47     bool Create(const wxBitmap& bitmap, const wxColour& colour);
  48
  49 #if wxUSE_PALETTE
  50     // create the mask from bitmap pixels with the given palette index
  51     bool Create(const wxBitmap& bitmap, int paletteIndex);
  52 #endif // wxUSE_PALETTE
  53
  54     // create the mask from the given mono bitmap
  55     bool Create(const wxBitmap& bitmap);
  56
  57 protected:
  58     // this function is called from Create() to free the existing mask data
  59     virtual void FreeData() = 0;
  60
  61     // these functions must be overridden to implement the corresponding public
  62     // Create() methods, they shouldn't call FreeData() as it's already called
  63     // by the public wrappers
  64     virtual bool InitFromColour(const wxBitmap& bitmap,
  65                                 const wxColour& colour) = 0;
  66     virtual bool InitFromMonoBitmap(const wxBitmap& bitmap) = 0;
  67 };
  68
  69 #if defined(__WXMGL__) || \
  70     defined(__WXDFB__) || \
  71     defined(__WXMAC__) || \
  72     defined(__WXGTK__) || \
  73     defined(__WXCOCOA__) || \
  74     defined(__WXMOTIF__) || \
  75     defined(__WXX11__)
  76     #define wxUSE_BITMAP_BASE 1
  77 #else
  78     #define wxUSE_BITMAP_BASE 0
  79 #endif
  80
  81 // Only used by some ports
  82 // FIXME -- make all ports (but MSW which uses wxGDIImage) use these base classes
  83 #if wxUSE_BITMAP_BASE
  84
  85 // ----------------------------------------------------------------------------
  86 // wxBitmapHandler: class which knows how to create/load/save bitmaps in
  87 // different formats
  88 // ----------------------------------------------------------------------------
  89
  90 class WXDLLEXPORT wxBitmapHandlerBase : public wxObject
  91 {
  92 public:
  93     wxBitmapHandlerBase() { m_type = wxBITMAP_TYPE_INVALID; }
  94     virtual ~wxBitmapHandlerBase() { }
  95
  96     virtual bool Create(wxBitmap *bitmap, const void* data, long flags,
  97                         int width, int height, int depth = 1);
  98     virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
  99                           int desiredWidth, int desiredHeight);
 100     virtual bool SaveFile(const wxBitmap *bitmap, const wxString& name,
 101                           int type, const wxPalette *palette = NULL);
 102
 103     void SetName(const wxString& name)      { m_name = name; }
 104     void SetExtension(const wxString& ext)  { m_extension = ext; }
 105     void SetType(wxBitmapType type)         { m_type = type; }
 106     const wxString& GetName() const         { return m_name; }
 107     const wxString& GetExtension() const    { return m_extension; }
 108     wxBitmapType GetType() const            { return m_type; }
 109
 110 private:
 111     wxString      m_name;
 112     wxString      m_extension;
 113     wxBitmapType  m_type;
 114
 115     DECLARE_ABSTRACT_CLASS(wxBitmapHandlerBase)
 116 };
 117
 118 class WXDLLEXPORT wxBitmapBase : public wxGDIObject
 119 {
 120 public:
 121     /*
 122     Derived class must implement these:
 123
 124     wxBitmap();
 125     wxBitmap(int width, int height, int depth = -1);
 126     wxBitmap(const char bits[], int width, int height, int depth = 1);
 127     wxBitmap(const char* const* bits);
 128     wxBitmap(const wxString &filename, wxBitmapType type = wxBITMAP_TYPE_XPM);
 129     wxBitmap(const wxImage& image, int depth = -1);
 130
 131     bool Create(int width, int height, int depth = -1);
 132
 133     static void InitStandardHandlers();
 134     */
 135
 136     virtual bool Ok() const { return IsOk(); }
 137     virtual bool IsOk() const = 0;
 138
 139     virtual int GetHeight() const = 0;
 140     virtual int GetWidth() const = 0;
 141     virtual int GetDepth() const = 0;
 142
 143     virtual wxImage ConvertToImage() const = 0;
 144
 145     virtual wxMask *GetMask() const = 0;
 146     virtual void SetMask(wxMask *mask) = 0;
 147
 148     virtual wxBitmap GetSubBitmap(const wxRect& rect) const = 0;
 149
 150     virtual bool SaveFile(const wxString &name, wxBitmapType type,
 151                           const wxPalette *palette = (wxPalette *)NULL) const = 0;
 152     virtual bool LoadFile(const wxString &name, wxBitmapType type) = 0;
 153
 154     /*
 155        If raw bitmap access is supported (see wx/rawbmp.h), the following
 156        methods should be implemented:
 157
 158        virtual bool GetRawData(wxRawBitmapData *data) = 0;
 159        virtual void UngetRawData(wxRawBitmapData *data) = 0;
 160      */
 161
 162 #if wxUSE_PALETTE
 163     virtual wxPalette *GetPalette() const = 0;
 164     virtual void SetPalette(const wxPalette& palette) = 0;
 165 #endif // wxUSE_PALETTE
 166
 167     // copies the contents and mask of the given (colour) icon to the bitmap
 168     virtual bool CopyFromIcon(const wxIcon& icon) = 0;
 169
 170     // implementation:
 171     virtual void SetHeight(int height) = 0;
 172     virtual void SetWidth(int width) = 0;
 173     virtual void SetDepth(int depth) = 0;
 174
 175     // Format handling
 176     static inline wxList& GetHandlers() { return sm_handlers; }
 177     static void AddHandler(wxBitmapHandlerBase *handler);
 178     static void InsertHandler(wxBitmapHandlerBase *handler);
 179     static bool RemoveHandler(const wxString& name);
 180     static wxBitmapHandler *FindHandler(const wxString& name);
 181     static wxBitmapHandler *FindHandler(const wxString& extension, wxBitmapType bitmapType);
 182     static wxBitmapHandler *FindHandler(wxBitmapType bitmapType);
 183
 184     //static void InitStandardHandlers();
 185     //  (wxBitmap must implement this one)
 186
 187     static void CleanUpHandlers();
 188
 189     // this method is only used by the generic implementation of wxMask
 190     // currently but could be useful elsewhere in the future: it can be
 191     // overridden to quantize the colour to correspond to bitmap colour depth
 192     // if necessary; default implementation simply returns the colour as is
 193     virtual wxColour QuantizeColour(const wxColour& colour) const
 194     {
 195         return colour;
 196     }
 197
 198 protected:
 199     static wxList sm_handlers;
 200
 201     DECLARE_ABSTRACT_CLASS(wxBitmapBase)
 202 };
 203
 204 #endif // wxUSE_BITMAP_BASE
 205
 206 #if defined(__WXPALMOS__)
 207     #include "wx/palmos/bitmap.h"
 208 #elif defined(__WXMSW__)
 209     #include "wx/msw/bitmap.h"
 210 #elif defined(__WXMOTIF__)
 211     #include "wx/x11/bitmap.h"
 212 #elif defined(__WXGTK20__)
 213     #include "wx/gtk/bitmap.h"
 214 #elif defined(__WXGTK__)
 215     #include "wx/gtk1/bitmap.h"
 216 #elif defined(__WXX11__)
 217     #include "wx/x11/bitmap.h"
 218 #elif defined(__WXMGL__)
 219     #include "wx/mgl/bitmap.h"
 220 #elif defined(__WXDFB__)
 221     #include "wx/dfb/bitmap.h"
 222 #elif defined(__WXMAC__)
 223     #include "wx/mac/bitmap.h"
 224 #elif defined(__WXCOCOA__)
 225     #include "wx/cocoa/bitmap.h"
 226 #elif defined(__WXPM__)
 227     #include "wx/os2/bitmap.h"
 228 #endif
 229
 230 // we must include generic mask.h after wxBitmap definition
 231 #if defined(__WXMGL__) || defined(__WXDFB__)
 232     #define wxUSE_GENERIC_MASK 1
 233 #else
 234     #define wxUSE_GENERIC_MASK 0
 235 #endif
 236
 237 #if wxUSE_GENERIC_MASK
 238     #include "wx/generic/mask.h"
 239 #endif
 240
 241 #endif // _WX_BITMAP_H_BASE_