src/gtk/bitmap.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        bitmap.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // RCS-ID:      $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifdef __GNUG__
  11 #pragma implementation "bitmap.h"
  12 #endif
  13
  14 #include "wx/bitmap.h"
  15 #include "wx/icon.h"
  16 #include "wx/filefn.h"
  17 #include "wx/image.h"
  18
  19 #include <gdk/gdk.h>
  20 #include <gdk/gdkprivate.h>
  21 #include <gdk/gdkx.h>
  22
  23 //-----------------------------------------------------------------------------
  24 // wxMask
  25 //-----------------------------------------------------------------------------
  26
  27 IMPLEMENT_DYNAMIC_CLASS(wxMask,wxObject)
  28
  29 wxMask::wxMask()
  30 {
  31     m_bitmap = (GdkBitmap *) NULL;
  32 }
  33
  34 wxMask::wxMask( const wxBitmap& bitmap, const wxColour& colour )
  35 {
  36     Create( bitmap, colour );
  37 }
  38
  39 wxMask::wxMask( const wxBitmap& bitmap, int paletteIndex )
  40 {
  41     Create( bitmap, paletteIndex );
  42 }
  43
  44 wxMask::wxMask( const wxBitmap& bitmap )
  45 {
  46     Create( bitmap );
  47 }
  48
  49 wxMask::~wxMask()
  50 {
  51     if (m_bitmap) gdk_bitmap_unref( m_bitmap );
  52 }
  53
  54 bool wxMask::Create( const wxBitmap& WXUNUSED(bitmap),
  55                      const wxColour& WXUNUSED(colour) )
  56 {
  57     if (m_bitmap)
  58     {
  59         gdk_bitmap_unref( m_bitmap );
  60         m_bitmap = (GdkBitmap*) NULL;
  61     }
  62
  63     wxFAIL_MSG( wxT("TODO") );
  64
  65     return FALSE;
  66 }
  67
  68 bool wxMask::Create( const wxBitmap& WXUNUSED(bitmap),
  69                      int WXUNUSED(paletteIndex) )
  70 {
  71     if (m_bitmap)
  72     {
  73         gdk_bitmap_unref( m_bitmap );
  74         m_bitmap = (GdkBitmap*) NULL;
  75     }
  76
  77     wxFAIL_MSG( wxT("not implemented") );
  78
  79     return FALSE;
  80 }
  81
  82 bool wxMask::Create( const wxBitmap& bitmap )
  83 {
  84     if (m_bitmap)
  85     {
  86         gdk_bitmap_unref( m_bitmap );
  87         m_bitmap = (GdkBitmap*) NULL;
  88     }
  89
  90     if (!bitmap.Ok()) return FALSE;
  91
  92     wxCHECK_MSG( bitmap.GetBitmap(), FALSE, wxT("Cannot create mask from colour bitmap") );
  93
  94     m_bitmap = gdk_pixmap_new( (GdkWindow*) &gdk_root_parent, bitmap.GetWidth(), bitmap.GetHeight(), 1 );
  95
  96     if (!m_bitmap) return FALSE;
  97
  98     GdkGC *gc = gdk_gc_new( m_bitmap );
  99
 100     gdk_draw_bitmap( m_bitmap, gc, bitmap.GetBitmap(), 0, 0, 0, 0, bitmap.GetWidth(), bitmap.GetHeight() );
 101
 102     gdk_gc_unref( gc );
 103
 104     return TRUE;
 105 }
 106
 107 GdkBitmap *wxMask::GetBitmap() const
 108 {
 109     return m_bitmap;
 110 }
 111
 112 //-----------------------------------------------------------------------------
 113 // wxBitmap
 114 //-----------------------------------------------------------------------------
 115
 116 class wxBitmapRefData: public wxObjectRefData
 117 {
 118 public:
 119   wxBitmapRefData();
 120   ~wxBitmapRefData();
 121
 122   GdkPixmap      *m_pixmap;
 123   GdkBitmap      *m_bitmap;
 124   wxMask         *m_mask;
 125   int             m_width;
 126   int             m_height;
 127   int             m_bpp;
 128   wxPalette      *m_palette;
 129 };
 130
 131 wxBitmapRefData::wxBitmapRefData()
 132 {
 133     m_pixmap = (GdkPixmap *) NULL;
 134     m_bitmap = (GdkBitmap *) NULL;
 135     m_mask = (wxMask *) NULL;
 136     m_width = 0;
 137     m_height = 0;
 138     m_bpp = 0;
 139     m_palette = (wxPalette *) NULL;
 140 }
 141
 142 wxBitmapRefData::~wxBitmapRefData()
 143 {
 144     if (m_pixmap) gdk_pixmap_unref( m_pixmap );
 145     if (m_bitmap) gdk_bitmap_unref( m_bitmap );
 146     if (m_mask) delete m_mask;
 147     if (m_palette) delete m_palette;
 148 }
 149
 150 //-----------------------------------------------------------------------------
 151
 152 #define M_BMPDATA ((wxBitmapRefData *)m_refData)
 153
 154 IMPLEMENT_DYNAMIC_CLASS(wxBitmap,wxGDIObject)
 155
 156 wxBitmap::wxBitmap()
 157 {
 158     if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);
 159 }
 160
 161 wxBitmap::wxBitmap( int width, int height, int depth )
 162 {
 163     wxCHECK_RET( (width > 0) && (height > 0), wxT("invalid bitmap size") )
 164
 165     GdkWindow *parent = (GdkWindow*) &gdk_root_parent;
 166     if (depth == -1) depth = gdk_window_get_visual( parent )->depth;
 167
 168     wxCHECK_RET( (depth ==  gdk_window_get_visual( parent )->depth) ||
 169                  (depth == 1), wxT("invalid bitmap depth") )
 170
 171     m_refData = new wxBitmapRefData();
 172     M_BMPDATA->m_mask = (wxMask *) NULL;
 173     M_BMPDATA->m_width = width;
 174     M_BMPDATA->m_height = height;
 175     if (depth == 1)
 176     {
 177         M_BMPDATA->m_bitmap = gdk_pixmap_new( parent, width, height, 1 );
 178         M_BMPDATA->m_bpp = 1;
 179     }
 180     else
 181     {
 182         M_BMPDATA->m_pixmap = gdk_pixmap_new( parent, width, height, depth );
 183         M_BMPDATA->m_bpp = gdk_window_get_visual( parent )->depth;
 184     }
 185
 186     if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);
 187 }
 188
 189 wxBitmap::wxBitmap( const char **bits )
 190 {
 191     wxCHECK_RET( bits != NULL, wxT("invalid bitmap data") )
 192
 193     m_refData = new wxBitmapRefData();
 194
 195     GdkBitmap *mask = (GdkBitmap*) NULL;
 196     GdkWindow *parent = (GdkWindow*) &gdk_root_parent;
 197
 198     M_BMPDATA->m_pixmap = gdk_pixmap_create_from_xpm_d( parent, &mask, NULL, (gchar **) bits );
 199
 200     if (mask)
 201     {
 202         M_BMPDATA->m_mask = new wxMask();
 203         M_BMPDATA->m_mask->m_bitmap = mask;
 204     }
 205
 206     gdk_window_get_size( M_BMPDATA->m_pixmap, &(M_BMPDATA->m_width), &(M_BMPDATA->m_height) );
 207
 208     M_BMPDATA->m_bpp = gdk_window_get_visual( parent )->depth;  // ?
 209     if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);
 210 }
 211
 212 wxBitmap::wxBitmap( char **bits )
 213 {
 214     wxCHECK_RET( bits != NULL, wxT("invalid bitmap data") )
 215
 216     m_refData = new wxBitmapRefData();
 217
 218     GdkBitmap *mask = (GdkBitmap*) NULL;
 219     GdkWindow *parent = (GdkWindow*) &gdk_root_parent;
 220
 221     M_BMPDATA->m_pixmap = gdk_pixmap_create_from_xpm_d( parent, &mask, NULL, (gchar **) bits );
 222
 223     wxCHECK_RET( M_BMPDATA->m_pixmap, wxT("couldn't create pixmap") );
 224
 225     if (mask)
 226     {
 227         M_BMPDATA->m_mask = new wxMask();
 228         M_BMPDATA->m_mask->m_bitmap = mask;
 229     }
 230
 231     gdk_window_get_size( M_BMPDATA->m_pixmap, &(M_BMPDATA->m_width), &(M_BMPDATA->m_height) );
 232
 233     M_BMPDATA->m_bpp = gdk_window_get_visual( parent )->depth;  // ?
 234     if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);
 235 }
 236
 237 wxBitmap::wxBitmap( const wxBitmap& bmp )
 238 {
 239     Ref( bmp );
 240
 241     if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);
 242 }
 243
 244 wxBitmap::wxBitmap( const wxString &filename, int type )
 245 {
 246     LoadFile( filename, type );
 247
 248     if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);
 249 }
 250
 251 wxBitmap::wxBitmap( const char bits[], int width, int height, int WXUNUSED(depth))
 252 {
 253     m_refData = new wxBitmapRefData();
 254
 255     M_BMPDATA->m_mask = (wxMask *) NULL;
 256     M_BMPDATA->m_bitmap =
 257       gdk_bitmap_create_from_data( (GdkWindow*) &gdk_root_parent, (gchar *) bits, width, height );
 258     M_BMPDATA->m_width = width;
 259     M_BMPDATA->m_height = height;
 260     M_BMPDATA->m_bpp = 1;
 261
 262     wxCHECK_RET( M_BMPDATA->m_bitmap, wxT("couldn't create bitmap") );
 263
 264     if (wxTheBitmapList) wxTheBitmapList->AddBitmap(this);
 265 }
 266
 267 wxBitmap::~wxBitmap()
 268 {
 269     if (wxTheBitmapList) wxTheBitmapList->DeleteObject(this);
 270 }
 271
 272 wxBitmap& wxBitmap::operator = ( const wxBitmap& bmp )
 273 {
 274     if (*this == bmp) return (*this);
 275     Ref( bmp );
 276     return *this;
 277 }
 278
 279 bool wxBitmap::operator == ( const wxBitmap& bmp )
 280 {
 281     return m_refData == bmp.m_refData;
 282 }
 283
 284 bool wxBitmap::operator != ( const wxBitmap& bmp )
 285 {
 286     return m_refData != bmp.m_refData;
 287 }
 288
 289 bool wxBitmap::Ok() const
 290 {
 291     return (m_refData != NULL);
 292 }
 293
 294 int wxBitmap::GetHeight() const
 295 {
 296     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
 297
 298     return M_BMPDATA->m_height;
 299 }
 300
 301 int wxBitmap::GetWidth() const
 302 {
 303     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
 304
 305     return M_BMPDATA->m_width;
 306 }
 307
 308 int wxBitmap::GetDepth() const
 309 {
 310     wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
 311
 312     return M_BMPDATA->m_bpp;
 313 }
 314
 315 wxMask *wxBitmap::GetMask() const
 316 {
 317     wxCHECK_MSG( Ok(), (wxMask *) NULL, wxT("invalid bitmap") );
 318
 319     return M_BMPDATA->m_mask;
 320 }
 321
 322 void wxBitmap::SetMask( wxMask *mask )
 323 {
 324     wxCHECK_RET( Ok(), wxT("invalid bitmap") );
 325
 326     if (M_BMPDATA->m_mask) delete M_BMPDATA->m_mask;
 327
 328     M_BMPDATA->m_mask = mask;
 329 }
 330
 331 bool wxBitmap::SaveFile( const wxString &name, int type, wxPalette *WXUNUSED(palette) )
 332 {
 333     wxCHECK_MSG( Ok(), FALSE, wxT("invalid bitmap") );
 334
 335     // Try to save the bitmap via wxImage handlers:
 336     {
 337         wxImage image( *this );
 338         if (image.Ok()) return image.SaveFile( name, type );
 339     }
 340
 341     return FALSE;
 342 }
 343
 344 bool wxBitmap::LoadFile( const wxString &name, int type )
 345 {
 346     UnRef();
 347
 348     if (!wxFileExists(name)) return FALSE;
 349
 350     if (type == wxBITMAP_TYPE_XPM)
 351     {
 352         m_refData = new wxBitmapRefData();
 353
 354         GdkBitmap *mask = (GdkBitmap*) NULL;
 355         GdkWindow *parent = (GdkWindow*) &gdk_root_parent;
 356
 357         M_BMPDATA->m_pixmap = gdk_pixmap_create_from_xpm( parent, &mask, NULL, name.fn_str() );
 358
 359         if (mask)
 360         {
 361            M_BMPDATA->m_mask = new wxMask();
 362            M_BMPDATA->m_mask->m_bitmap = mask;
 363         }
 364
 365         gdk_window_get_size( M_BMPDATA->m_pixmap, &(M_BMPDATA->m_width), &(M_BMPDATA->m_height) );
 366         M_BMPDATA->m_bpp = gdk_window_get_visual( parent )->depth;
 367     }
 368     else // try if wxImage can load it
 369     {
 370         wxImage image;
 371         if (!image.LoadFile( name, type )) return FALSE;
 372         if (image.Ok()) *this = image.ConvertToBitmap();
 373         else return FALSE;
 374     }
 375
 376     return TRUE;
 377 }
 378
 379 wxPalette *wxBitmap::GetPalette() const
 380 {
 381     if (!Ok()) return (wxPalette *) NULL;
 382
 383     return M_BMPDATA->m_palette;
 384 }
 385
 386 void wxBitmap::SetHeight( int height )
 387 {
 388     if (!m_refData) m_refData = new wxBitmapRefData();
 389
 390     M_BMPDATA->m_height = height;
 391 }
 392
 393 void wxBitmap::SetWidth( int width )
 394 {
 395     if (!m_refData) m_refData = new wxBitmapRefData();
 396
 397     M_BMPDATA->m_width = width;
 398 }
 399
 400 void wxBitmap::SetDepth( int depth )
 401 {
 402     if (!m_refData) m_refData = new wxBitmapRefData();
 403
 404     M_BMPDATA->m_bpp = depth;
 405 }
 406
 407 void wxBitmap::SetPixmap( GdkPixmap *pixmap )
 408 {
 409     if (!m_refData) m_refData = new wxBitmapRefData();
 410
 411     M_BMPDATA->m_pixmap = pixmap;
 412 }
 413
 414 GdkPixmap *wxBitmap::GetPixmap() const
 415 {
 416     wxCHECK_MSG( Ok(), (GdkPixmap *) NULL, wxT("invalid bitmap") );
 417
 418     return M_BMPDATA->m_pixmap;
 419 }
 420
 421 GdkBitmap *wxBitmap::GetBitmap() const
 422 {
 423     wxCHECK_MSG( Ok(), (GdkBitmap *) NULL, wxT("invalid bitmap") );
 424
 425     return M_BMPDATA->m_bitmap;
 426 }