include/wx/palmos/bitmap.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/palmos/bitmap.h
   3 // Purpose:     wxBitmap class
   4 // Author:      William Osborne - minimal working wxPalmOS port
   5 // Modified by:
   6 // Created:     10/13/04
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) William Osborne
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_BITMAP_H_
  13 #define _WX_BITMAP_H_
  14
  15 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  16     #pragma interface "bitmap.h"
  17 #endif
  18
  19 #include "wx/palmos/gdiimage.h"
  20 #include "wx/gdicmn.h"
  21 #include "wx/palette.h"
  22
  23 class WXDLLEXPORT wxBitmap;
  24 class WXDLLEXPORT wxBitmapHandler;
  25 class WXDLLEXPORT wxBitmapRefData;
  26 class WXDLLEXPORT wxControl;
  27 class WXDLLEXPORT wxCursor;
  28 class WXDLLEXPORT wxDC;
  29 #if wxUSE_WXDIB
  30 class WXDLLEXPORT wxDIB;
  31 #endif
  32 class WXDLLEXPORT wxIcon;
  33 class WXDLLEXPORT wxImage;
  34 class WXDLLEXPORT wxMask;
  35 class WXDLLEXPORT wxPalette;
  36 class WXDLLEXPORT wxPixelDataBase;
  37
  38 // ----------------------------------------------------------------------------
  39 // wxBitmap: a mono or colour bitmap
  40 // ----------------------------------------------------------------------------
  41
  42 class WXDLLEXPORT wxBitmap : public wxGDIImage
  43 {
  44 public:
  45     // default ctor creates an invalid bitmap, you must Create() it later
  46     wxBitmap() { Init(); }
  47
  48     // Copy constructors
  49     wxBitmap(const wxBitmap& bitmap) { Init(); Ref(bitmap); }
  50
  51     // Initialize with raw data
  52     wxBitmap(const char bits[], int width, int height, int depth = 1);
  53
  54     // Initialize with XPM data
  55     wxBitmap(const char **data) { CreateFromXpm(data); }
  56     wxBitmap(char **data) { CreateFromXpm((const char **)data); }
  57
  58     // Load a file or resource
  59     wxBitmap(const wxString& name, wxBitmapType type = wxBITMAP_TYPE_BMP_RESOURCE);
  60
  61     // New constructor for generalised creation from data
  62     wxBitmap(void *data, long type, int width, int height, int depth = 1);
  63
  64     // Create a new, uninitialized bitmap of the given size and depth (if it
  65     // is omitted, will create a bitmap compatible with the display)
  66     //
  67     // NB: this ctor will create a DIB for 24 and 32bpp bitmaps, use ctor
  68     //     taking a DC argument if you want to force using DDB in this case
  69     wxBitmap(int width, int height, int depth = -1);
  70
  71     // Create a bitmap compatible with the given DC
  72     wxBitmap(int width, int height, const wxDC& dc);
  73
  74 #if wxUSE_IMAGE && wxUSE_WXDIB
  75     // Convert from wxImage
  76     wxBitmap(const wxImage& image, int depth = -1)
  77         { (void)CreateFromImage(image, depth); }
  78
  79     // Create a DDB compatible with the given DC from wxImage
  80     wxBitmap(const wxImage& image, const wxDC& dc)
  81         { (void)CreateFromImage(image, dc); }
  82 #endif // wxUSE_IMAGE
  83
  84     // we must have this, otherwise icons are silently copied into bitmaps using
  85     // the copy ctor but the resulting bitmap is invalid!
  86     wxBitmap(const wxIcon& icon) { Init(); CopyFromIcon(icon); }
  87
  88     wxBitmap& operator=(const wxBitmap& bitmap)
  89     {
  90         if ( m_refData != bitmap.m_refData )
  91             Ref(bitmap);
  92         return *this;
  93     }
  94
  95     wxBitmap& operator=(const wxIcon& icon)
  96     {
  97         (void)CopyFromIcon(icon);
  98
  99         return *this;
 100     }
 101
 102     wxBitmap& operator=(const wxCursor& cursor)
 103     {
 104         (void)CopyFromCursor(cursor);
 105
 106         return *this;
 107     }
 108
 109     virtual ~wxBitmap();
 110
 111 #if wxUSE_IMAGE && wxUSE_WXDIB
 112     wxImage ConvertToImage() const;
 113 #endif // wxUSE_IMAGE
 114
 115     // get the given part of bitmap
 116     wxBitmap GetSubBitmap( const wxRect& rect ) const;
 117
 118     // copies the contents and mask of the given (colour) icon to the bitmap
 119     bool CopyFromIcon(const wxIcon& icon);
 120
 121     // copies the contents and mask of the given cursor to the bitmap
 122     bool CopyFromCursor(const wxCursor& cursor);
 123
 124 #if wxUSE_WXDIB
 125     // copies from a device independent bitmap
 126     bool CopyFromDIB(const wxDIB& dib);
 127 #endif
 128
 129     virtual bool Create(int width, int height, int depth = -1);
 130     virtual bool Create(int width, int height, const wxDC& dc);
 131     virtual bool Create(void *data, long type, int width, int height, int depth = 1);
 132     virtual bool LoadFile(const wxString& name, long type = wxBITMAP_TYPE_BMP_RESOURCE);
 133     virtual bool SaveFile(const wxString& name, int type, const wxPalette *cmap = NULL);
 134
 135     wxBitmapRefData *GetBitmapData() const
 136         { return (wxBitmapRefData *)m_refData; }
 137
 138     // raw bitmap access support functions
 139     void *GetRawData(wxPixelDataBase& data, int bpp);
 140     void UngetRawData(wxPixelDataBase& data);
 141
 142 #if wxUSE_PALETTE
 143     wxPalette* GetPalette() const;
 144     void SetPalette(const wxPalette& palette);
 145 #endif // wxUSE_PALETTE
 146
 147     wxMask *GetMask() const;
 148     void SetMask(wxMask *mask);
 149
 150     bool operator==(const wxBitmap& bitmap) const { return m_refData == bitmap.m_refData; }
 151     bool operator!=(const wxBitmap& bitmap) const { return m_refData != bitmap.m_refData; }
 152
 153     // these functions are internal and shouldn't be used, they risk to
 154     // disappear in the future
 155     bool HasAlpha() const;
 156     void UseAlpha();
 157
 158     // implementation only from now on
 159     // -------------------------------
 160
 161 public:
 162     void SetHBITMAP(WXHBITMAP bmp) { SetHandle((WXHANDLE)bmp); }
 163     WXHBITMAP GetHBITMAP() const { return (WXHBITMAP)GetHandle(); }
 164
 165 #ifdef __WXDEBUG__
 166     void SetSelectedInto(wxDC *dc);
 167     wxDC *GetSelectedInto() const;
 168 #endif // __WXDEBUG__
 169
 170 protected:
 171     // common part of all ctors
 172     void Init();
 173
 174     virtual wxGDIImageRefData *CreateData() const;
 175
 176     // creates the bitmap from XPM data, supposed to be called from ctor
 177     bool CreateFromXpm(const char **bits);
 178
 179     // creates an uninitialized bitmap, called from Create()s above
 180     bool DoCreate(int w, int h, int depth, WXHDC hdc);
 181
 182 #if wxUSE_IMAGE && wxUSE_WXDIB
 183     // creates the bitmap from wxImage, supposed to be called from ctor
 184     bool CreateFromImage(const wxImage& image, int depth);
 185
 186     // creates a DDB from wxImage, supposed to be called from ctor
 187     bool CreateFromImage(const wxImage& image, const wxDC& dc);
 188
 189     // common part of the 2 methods above (hdc may be 0)
 190     bool CreateFromImage(const wxImage& image, int depth, WXHDC hdc);
 191 #endif // wxUSE_IMAGE
 192
 193 private:
 194     DECLARE_DYNAMIC_CLASS(wxBitmap)
 195 };
 196
 197 // ----------------------------------------------------------------------------
 198 // wxMask: a mono bitmap used for drawing bitmaps transparently.
 199 // ----------------------------------------------------------------------------
 200
 201 class WXDLLEXPORT wxMask : public wxObject
 202 {
 203 public:
 204     wxMask();
 205
 206     // Construct a mask from a bitmap and a colour indicating the transparent
 207     // area
 208     wxMask(const wxBitmap& bitmap, const wxColour& colour);
 209
 210     // Construct a mask from a bitmap and a palette index indicating the
 211     // transparent area
 212     wxMask(const wxBitmap& bitmap, int paletteIndex);
 213
 214     // Construct a mask from a mono bitmap (copies the bitmap).
 215     wxMask(const wxBitmap& bitmap);
 216
 217     // construct a mask from the givne bitmap handle
 218     wxMask(WXHBITMAP hbmp) { m_maskBitmap = hbmp; }
 219
 220     virtual ~wxMask();
 221
 222     bool Create(const wxBitmap& bitmap, const wxColour& colour);
 223     bool Create(const wxBitmap& bitmap, int paletteIndex);
 224     bool Create(const wxBitmap& bitmap);
 225
 226     // Implementation
 227     WXHBITMAP GetMaskBitmap() const { return m_maskBitmap; }
 228     void SetMaskBitmap(WXHBITMAP bmp) { m_maskBitmap = bmp; }
 229
 230 protected:
 231     WXHBITMAP m_maskBitmap;
 232
 233     DECLARE_DYNAMIC_CLASS(wxMask)
 234 };
 235
 236 // ----------------------------------------------------------------------------
 237 // wxBitmapHandler is a class which knows how to load/save bitmaps to/from file
 238 // ----------------------------------------------------------------------------
 239
 240 class WXDLLEXPORT wxBitmapHandler : public wxGDIImageHandler
 241 {
 242 public:
 243     wxBitmapHandler() { m_type = wxBITMAP_TYPE_INVALID; }
 244     wxBitmapHandler(const wxString& name, const wxString& ext, long type)
 245         : wxGDIImageHandler(name, ext, type)
 246     {
 247     }
 248
 249     // keep wxBitmapHandler derived from wxGDIImageHandler compatible with the
 250     // old class which worked only with bitmaps
 251     virtual bool Create(wxBitmap *bitmap,
 252                         void *data,
 253                         long flags,
 254                         int width, int height, int depth = 1);
 255     virtual bool LoadFile(wxBitmap *bitmap,
 256                           const wxString& name,
 257                           long flags,
 258                           int desiredWidth, int desiredHeight);
 259     virtual bool SaveFile(wxBitmap *bitmap,
 260                           const wxString& name,
 261                           int type,
 262                           const wxPalette *palette = NULL);
 263
 264     virtual bool Create(wxGDIImage *image,
 265                         void *data,
 266                         long flags,
 267                         int width, int height, int depth = 1);
 268     virtual bool Load(wxGDIImage *image,
 269                       const wxString& name,
 270                       long flags,
 271                       int desiredWidth, int desiredHeight);
 272     virtual bool Save(wxGDIImage *image,
 273                       const wxString& name,
 274                       int type);
 275
 276 private:
 277     DECLARE_DYNAMIC_CLASS(wxBitmapHandler)
 278 };
 279
 280 #endif
 281   // _WX_BITMAP_H_