include/wx/x11/bitmap.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        bitmap.h
   3 // Purpose:     wxBitmap class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     17/09/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_BITMAP_H_
  13 #define _WX_BITMAP_H_
  14
  15 #ifdef __GNUG__
  16 #pragma interface "bitmap.h"
  17 #endif
  18
  19 #include "wx/gdiobj.h"
  20 #include "wx/gdicmn.h"
  21 #include "wx/palette.h"
  22
  23 // Bitmap
  24 class WXDLLEXPORT wxDC;
  25 class WXDLLEXPORT wxControl;
  26 class WXDLLEXPORT wxBitmap;
  27 class WXDLLEXPORT wxBitmapHandler;
  28 class WXDLLEXPORT wxIcon;
  29 class WXDLLEXPORT wxCursor;
  30 class WXDLLEXPORT wxImage;
  31
  32 // A mask is a mono bitmap used for drawing bitmaps
  33 // transparently.
  34 class WXDLLEXPORT wxMask: public wxObject
  35 {
  36     DECLARE_DYNAMIC_CLASS(wxMask)
  37
  38 public:
  39     wxMask();
  40
  41     // Construct a mask from a bitmap and a colour indicating
  42     // the transparent area
  43     wxMask(const wxBitmap& bitmap, const wxColour& colour);
  44
  45     // Construct a mask from a bitmap and a palette index indicating
  46     // the transparent area
  47     wxMask(const wxBitmap& bitmap, int paletteIndex);
  48
  49     // Construct a mask from a mono bitmap (copies the bitmap).
  50     wxMask(const wxBitmap& bitmap);
  51
  52     ~wxMask();
  53
  54     bool Create(const wxBitmap& bitmap, const wxColour& colour);
  55     bool Create(const wxBitmap& bitmap, int paletteIndex);
  56     bool Create(const wxBitmap& bitmap);
  57
  58     WXPixmap GetPixmap() const { return m_pixmap; }
  59     void SetPixmap(WXPixmap pixmap) { m_pixmap = pixmap; }
  60
  61 protected:
  62     WXPixmap      m_pixmap;
  63 };
  64
  65 class WXDLLEXPORT wxBitmapRefData: public wxGDIRefData
  66 {
  67     friend class WXDLLEXPORT wxBitmap;
  68     friend class WXDLLEXPORT wxIcon;
  69     friend class WXDLLEXPORT wxCursor;
  70 public:
  71     wxBitmapRefData();
  72     ~wxBitmapRefData();
  73
  74 public:
  75     int               m_width;
  76     int               m_height;
  77     int               m_depth;
  78     bool              m_ok;
  79     int               m_numColors;
  80     wxPalette         m_bitmapPalette;
  81     int               m_quality;
  82
  83     wxMask *          m_bitmapMask; // Optional mask
  84
  85     // Motif implementation
  86 public:
  87     WXPixmap          m_pixmap;
  88     WXDisplay*        m_display;
  89     bool              m_freePixmap;
  90     unsigned long*    m_freeColors;
  91     long              m_freeColorsCount;
  92 };
  93
  94 #define M_BITMAPDATA ((wxBitmapRefData *)m_refData)
  95
  96 class WXDLLEXPORT wxBitmapHandler: public wxObject
  97 {
  98     DECLARE_DYNAMIC_CLASS(wxBitmapHandler)
  99 public:
 100     wxBitmapHandler() { m_name = ""; m_extension = ""; m_type = 0; };
 101
 102     virtual bool Create(wxBitmap *bitmap, void *data, long flags, int width, int height, int depth = 1);
 103     virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
 104         int desiredWidth, int desiredHeight);
 105     virtual bool SaveFile(wxBitmap *bitmap, const wxString& name, int type, const wxPalette *palette = NULL);
 106
 107     void SetName(const wxString& name) { m_name = name; }
 108     void SetExtension(const wxString& ext) { m_extension = ext; }
 109     void SetType(long type) { m_type = type; }
 110     wxString GetName() const { return m_name; }
 111     wxString GetExtension() const { return m_extension; }
 112     long GetType() const { return m_type; }
 113 protected:
 114     wxString  m_name;
 115     wxString  m_extension;
 116     long      m_type;
 117 };
 118
 119 #define M_BITMAPHANDLERDATA ((wxBitmapRefData *)bitmap->GetRefData())
 120
 121 class WXDLLEXPORT wxBitmap: public wxGDIObject
 122 {
 123     DECLARE_DYNAMIC_CLASS(wxBitmap)
 124
 125         friend class WXDLLEXPORT wxBitmapHandler;
 126
 127 public:
 128     wxBitmap(); // Platform-specific
 129
 130     // Copy constructors
 131     wxBitmap(const wxBitmap& bitmap)
 132     { Ref(bitmap); }
 133
 134     // Initialize with raw XBM data
 135     wxBitmap(const char bits[], int width, int height, int depth = 1);
 136
 137     // from XPM
 138     wxBitmap(const char **data) { (void) Create((void *)data, wxBITMAP_TYPE_XPM_DATA, 0, 0, 0); }
 139     wxBitmap(char **data) { (void) Create((void *)data, wxBITMAP_TYPE_XPM_DATA, 0, 0, 0); }
 140
 141     // Load a file or resource
 142     wxBitmap(const wxString& name, long type = wxBITMAP_TYPE_XPM);
 143
 144     // Constructor for generalised creation from data
 145     wxBitmap(void *data, long type, int width, int height, int depth = 1);
 146
 147     // If depth is omitted, will create a bitmap compatible with the display
 148     wxBitmap(int width, int height, int depth = -1);
 149
 150     // Convert from wxImage:
 151     wxBitmap(const wxImage& image, int depth = -1) { (void)CreateFromImage(image, depth); }
 152
 153     ~wxBitmap();
 154
 155     virtual bool Create(int width, int height, int depth = -1);
 156     virtual bool Create(void *data, long type, int width, int height, int depth = 1);
 157
 158     wxBitmap GetSubBitmap( const wxRect& rect ) const;
 159
 160     virtual bool LoadFile(const wxString& name, long type = wxBITMAP_TYPE_XPM);
 161     virtual bool SaveFile(const wxString& name, int type, const wxPalette *cmap = NULL);
 162
 163     wxImage ConvertToImage() const;
 164
 165     bool CopyFromIcon(const wxIcon& icon);
 166
 167     bool Ok() const { return (M_BITMAPDATA && M_BITMAPDATA->m_ok); }
 168     int GetWidth() const { return (M_BITMAPDATA ? M_BITMAPDATA->m_width : 0); }
 169     int GetHeight() const { return (M_BITMAPDATA ? M_BITMAPDATA->m_height : 0); }
 170     int GetDepth() const { return (M_BITMAPDATA ? M_BITMAPDATA->m_depth : 0); }
 171     int GetQuality() const { return (M_BITMAPDATA ? M_BITMAPDATA->m_quality : 0); }
 172     void SetWidth(int w);
 173     void SetHeight(int h);
 174     void SetDepth(int d);
 175     void SetQuality(int q);
 176     void SetOk(bool isOk);
 177
 178     wxPalette* GetPalette() const { return (M_BITMAPDATA ? (& M_BITMAPDATA->m_bitmapPalette) : (wxPalette*) NULL); }
 179     void SetPalette(const wxPalette& palette);
 180
 181     wxMask *GetMask() const { return (M_BITMAPDATA ? M_BITMAPDATA->m_bitmapMask : (wxMask*) NULL); }
 182     void SetMask(wxMask *mask) ;
 183
 184     wxBitmap& operator = (const wxBitmap& bitmap) { if (*this == bitmap) return (*this); Ref(bitmap); return *this; }
 185     bool operator == (const wxBitmap& bitmap) const { return m_refData == bitmap.m_refData; }
 186     bool operator != (const wxBitmap& bitmap) const { return m_refData != bitmap.m_refData; }
 187
 188     // Format handling
 189     static wxList& GetHandlers() { return sm_handlers; }
 190     static void AddHandler(wxBitmapHandler *handler);
 191     static void InsertHandler(wxBitmapHandler *handler);
 192     static bool RemoveHandler(const wxString& name);
 193     static wxBitmapHandler *FindHandler(const wxString& name);
 194     static wxBitmapHandler *FindHandler(const wxString& extension, long bitmapType);
 195     static wxBitmapHandler *FindHandler(long bitmapType);
 196
 197     static void InitStandardHandlers();
 198     static void CleanUpHandlers();
 199
 200     // Motif implementation
 201 public:
 202     WXDisplay* GetDisplay() const { return M_BITMAPDATA->m_display; }
 203     WXPixmap GetPixmap() const { return (WXPixmap) M_BITMAPDATA->m_pixmap; }
 204     void SetPixmapNull() { M_BITMAPDATA->m_pixmap = 0; }
 205
 206 protected:
 207     static wxList sm_handlers;
 208
 209 protected:
 210     bool CreateFromImage(const wxImage& image, int depth);
 211 };
 212
 213 // Creates a bitmap with transparent areas drawn in
 214 // the given colour.
 215 wxBitmap wxCreateMaskedBitmap(const wxBitmap& bitmap, wxColour& colour);
 216
 217 #endif
 218 // _WX_BITMAP_H_